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New upstream version 2.3.4

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Jan Wagner 2023-10-18 07:29:37 +00:00
parent e7bdd1c6c6
commit de72f6f588
556 changed files with 90432 additions and 53391 deletions
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2398
gl/Makefile.am
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5543
gl/Makefile.in
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50
gl/_Noreturn.h Normal file
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/* A C macro for declaring that a function does not return.
Copyright (C) 2011-2023 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#ifndef _Noreturn
# if (defined __cplusplus \
&& ((201103 <= __cplusplus && !(__GNUC__ == 4 && __GNUC_MINOR__ == 7)) \
|| (defined _MSC_VER && 1900 <= _MSC_VER)) \
&& 0)
/* [[noreturn]] is not practically usable, because with it the syntax
extern _Noreturn void func (...);
would not be valid; such a declaration would only be valid with 'extern'
and '_Noreturn' swapped, or without the 'extern' keyword. However, some
AIX system header files and several gnulib header files use precisely
this syntax with 'extern'. */
# define _Noreturn [[noreturn]]
# elif (defined __clang__ && __clang_major__ < 16 \
&& defined _GL_WORK_AROUND_LLVM_BUG_59792)
/* Compile with -D_GL_WORK_AROUND_LLVM_BUG_59792 to work around
that rare LLVM bug, though you may get many false-alarm warnings. */
# define _Noreturn
# elif ((!defined __cplusplus || defined __clang__) \
&& (201112 <= (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) \
|| (!defined __STRICT_ANSI__ \
&& (4 < __GNUC__ + (7 <= __GNUC_MINOR__) \
|| (defined __apple_build_version__ \
? 6000000 <= __apple_build_version__ \
: 3 < __clang_major__ + (5 <= __clang_minor__))))))
/* _Noreturn works as-is. */
# elif (2 < __GNUC__ + (8 <= __GNUC_MINOR__) || defined __clang__ \
|| 0x5110 <= __SUNPRO_C)
# define _Noreturn __attribute__ ((__noreturn__))
# elif 1200 <= (defined _MSC_VER ? _MSC_VER : 0)
# define _Noreturn __declspec (noreturn)
# else
# define _Noreturn
# endif
#endif

213
gl/af_alg.c Normal file
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/* af_alg.c - Compute message digests from file streams and buffers.
Copyright (C) 2018-2023 Free Software Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by Matteo Croce <mcroce@redhat.com>, 2018. */
#include <config.h>
#include "af_alg.h"
#if USE_LINUX_CRYPTO_API
#include <unistd.h>
#include <string.h>
#include <stdio.h>
#include <errno.h>
#include <linux/if_alg.h>
#include <sys/stat.h>
#include <sys/sendfile.h>
#include <sys/socket.h>
#include "sys-limits.h"
#define BLOCKSIZE 32768
/* Return a newly created socket for ALG.
On error, return a negative error number. */
static int
alg_socket (char const *alg)
{
struct sockaddr_alg salg = {
.salg_family = AF_ALG,
.salg_type = "hash",
};
/* Copy alg into salg.salg_name, without calling strcpy nor strlen. */
for (size_t i = 0; (salg.salg_name[i] = alg[i]) != '\0'; i++)
if (i == sizeof salg.salg_name - 1)
/* alg is too long. */
return -EINVAL;
int cfd = socket (AF_ALG, SOCK_SEQPACKET | SOCK_CLOEXEC, 0);
if (cfd < 0)
return -EAFNOSUPPORT;
int ofd = (bind (cfd, (struct sockaddr *) &salg, sizeof salg) == 0
? accept4 (cfd, NULL, 0, SOCK_CLOEXEC)
: -1);
close (cfd);
return ofd < 0 ? -EAFNOSUPPORT : ofd;
}
int
afalg_buffer (const char *buffer, size_t len, const char *alg,
void *resblock, ssize_t hashlen)
{
/* On Linux < 4.9, the value for an empty stream is wrong (all zeroes).
See <https://patchwork.kernel.org/patch/9308641/>.
This was not fixed properly until November 2016,
see <https://patchwork.kernel.org/patch/9434741/>. */
if (len == 0)
return -EAFNOSUPPORT;
int ofd = alg_socket (alg);
if (ofd < 0)
return ofd;
int result;
for (;;)
{
ssize_t size = (len > BLOCKSIZE ? BLOCKSIZE : len);
if (send (ofd, buffer, size, MSG_MORE) != size)
{
result = -EAFNOSUPPORT;
break;
}
buffer += size;
len -= size;
if (len == 0)
{
result = read (ofd, resblock, hashlen) == hashlen ? 0 : -EAFNOSUPPORT;
break;
}
}
close (ofd);
return result;
}
int
afalg_stream (FILE *stream, const char *alg,
void *resblock, ssize_t hashlen)
{
int ofd = alg_socket (alg);
if (ofd < 0)
return ofd;
/* If STREAM's size is known and nonzero and not too large, attempt
sendfile to pipe the data. The nonzero restriction avoids issues
with /proc files that pretend to be empty, and lets the classic
read-write loop work around an empty-input bug noted below. */
int fd = fileno (stream);
int result;
struct stat st;
off_t off = ftello (stream);
if (0 <= off && fstat (fd, &st) == 0
&& (S_ISREG (st.st_mode) || S_TYPEISSHM (&st) || S_TYPEISTMO (&st))
&& off < st.st_size && st.st_size - off < SYS_BUFSIZE_MAX)
{
/* Make sure the offset of fileno (stream) reflects how many bytes
have been read from stream before this function got invoked.
Note: fflush on an input stream after ungetc does not work as expected
on some platforms. Therefore this situation is not supported here. */
if (fflush (stream))
result = -EIO;
else
{
off_t nbytes = st.st_size - off;
if (sendfile (ofd, fd, &off, nbytes) == nbytes)
{
if (read (ofd, resblock, hashlen) == hashlen)
{
/* The input buffers of stream are no longer valid. */
if (lseek (fd, off, SEEK_SET) != (off_t)-1)
result = 0;
else
/* The file position of fd has not changed. */
result = -EAFNOSUPPORT;
}
else
/* The file position of fd has not changed. */
result = -EAFNOSUPPORT;
}
else
/* The file position of fd has not changed. */
result = -EAFNOSUPPORT;
}
}
else
{
/* sendfile not possible, do a classic read-write loop. */
/* Number of bytes to seek (backwards) in case of error. */
off_t nseek = 0;
for (;;)
{
char buf[BLOCKSIZE];
/* When the stream is not seekable, start with a single-byte block,
so that we can use ungetc() in the case that send() fails. */
size_t blocksize = (nseek == 0 && off < 0 ? 1 : BLOCKSIZE);
ssize_t size = fread (buf, 1, blocksize, stream);
if (size == 0)
{
/* On Linux < 4.9, the value for an empty stream is wrong (all 0).
See <https://patchwork.kernel.org/patch/9308641/>.
This was not fixed properly until November 2016,
see <https://patchwork.kernel.org/patch/9434741/>. */
result = ferror (stream) ? -EIO : nseek == 0 ? -EAFNOSUPPORT : 0;
break;
}
nseek -= size;
if (send (ofd, buf, size, MSG_MORE) != size)
{
if (nseek == -1)
{
/* 1 byte of pushback buffer is guaranteed on stream, even
if stream is not seekable. */
ungetc ((unsigned char) buf[0], stream);
result = -EAFNOSUPPORT;
}
else if (fseeko (stream, nseek, SEEK_CUR) == 0)
/* The position of stream has been restored. */
result = -EAFNOSUPPORT;
else
result = -EIO;
break;
}
/* Don't assume that EOF is sticky. See:
<https://sourceware.org/bugzilla/show_bug.cgi?id=19476>. */
if (feof (stream))
{
result = 0;
break;
}
}
if (result == 0 && read (ofd, resblock, hashlen) != hashlen)
{
if (nseek == 0 || fseeko (stream, nseek, SEEK_CUR) == 0)
/* The position of stream has been restored. */
result = -EAFNOSUPPORT;
else
result = -EIO;
}
}
close (ofd);
return result;
}
#endif

115
gl/af_alg.h Normal file
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/* af_alg.h - Compute message digests from file streams and buffers.
Copyright (C) 2018-2023 Free Software Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by Matteo Croce <mcroce@redhat.com>, 2018.
Documentation by Bruno Haible <bruno@clisp.org>, 2018. */
/* Declare specific functions for computing message digests
using the Linux kernel crypto API, if available. This kernel API gives
access to specialized crypto instructions (that would also be available
in user space) or to crypto devices (not directly available in user space).
For a more complete set of facilities that use the Linux kernel crypto API,
look at libkcapi. */
#ifndef AF_ALG_H
# define AF_ALG_H 1
# include <stdio.h>
# include <errno.h>
# ifdef __cplusplus
extern "C" {
# endif
# if USE_LINUX_CRYPTO_API
/* Compute a message digest of a memory region.
The memory region starts at BUFFER and is LEN bytes long.
ALG is the message digest algorithm; see the file /proc/crypto.
RESBLOCK points to a block of HASHLEN bytes, for the result.
HASHLEN must be the length of the message digest, in bytes, in particular:
alg | hashlen
-------+--------
md5 | 16
sha1 | 20
sha224 | 28
sha256 | 32
sha384 | 48
sha512 | 64
If successful, fill RESBLOCK and return 0.
Upon failure, return a negated error number. */
int
afalg_buffer (const char *buffer, size_t len, const char *alg,
void *resblock, ssize_t hashlen);
/* Compute a message digest of data read from STREAM.
STREAM is an open file stream. The last operation on STREAM should
not be 'ungetc', and if STREAM is also open for writing it should
have been fflushed since its last write. Read from the current
position to the end of STREAM. Handle regular files efficiently.
ALG is the message digest algorithm; see the file /proc/crypto.
RESBLOCK points to a block of HASHLEN bytes, for the result.
HASHLEN must be the length of the message digest, in bytes, in particular:
alg | hashlen
-------+--------
md5 | 16
sha1 | 20
sha224 | 28
sha256 | 32
sha384 | 48
sha512 | 64
If successful, fill RESBLOCK and return 0.
Upon failure, return a negated error number.
Unless returning 0 or -EIO, restore STREAM's file position so that
the caller can fall back on some other method. */
int
afalg_stream (FILE *stream, const char *alg,
void *resblock, ssize_t hashlen);
# else
static inline int
afalg_buffer (const char *buffer, size_t len, const char *alg,
void *resblock, ssize_t hashlen)
{
return -EAFNOSUPPORT;
}
static inline int
afalg_stream (FILE *stream, const char *alg,
void *resblock, ssize_t hashlen)
{
return -EAFNOSUPPORT;
}
# endif
# ifdef __cplusplus
}
# endif
#endif /* AF_ALG_H */

35
gl/alloca.in.h
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@ -1,22 +1,20 @@
/* Memory allocation on the stack.
Copyright (C) 1995, 1999, 2001-2004, 2006-2013 Free Software Foundation,
Copyright (C) 1995, 1999, 2001-2004, 2006-2023 Free Software Foundation,
Inc.
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 3, or (at your option)
any later version.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU General Public
License along with this program; if not, see
<http://www.gnu.org/licenses/>.
*/
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Avoid using the symbol _ALLOCA_H here, as Bison assumes _ALLOCA_H
means there is a real alloca function. */
@ -35,7 +33,16 @@
*/
#ifndef alloca
# ifdef __GNUC__
/* Some version of mingw have an <alloca.h> that causes trouble when
included after 'alloca' gets defined as a macro. As a workaround,
include this <alloca.h> first and define 'alloca' as a macro afterwards
if needed. */
# if defined __GNUC__ && (defined _WIN32 && ! defined __CYGWIN__) && @HAVE_ALLOCA_H@
# include_next <alloca.h>
# endif
#endif
#ifndef alloca
# if defined __GNUC__ || (__clang_major__ >= 4)
# define alloca __builtin_alloca
# elif defined _AIX
# define alloca __alloca
@ -51,6 +58,8 @@ extern "C"
void *_alloca (unsigned short);
# pragma intrinsic (_alloca)
# define alloca _alloca
# elif defined __MVS__
# include <stdlib.h>
# else
# include <stddef.h>
# ifdef __cplusplus

26
gl/arg-nonnull.h Normal file
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@ -0,0 +1,26 @@
/* A C macro for declaring that specific arguments must not be NULL.
Copyright (C) 2009-2023 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* _GL_ARG_NONNULL((n,...,m)) tells the compiler and static analyzer tools
that the values passed as arguments n, ..., m must be non-NULL pointers.
n = 1 stands for the first argument, n = 2 for the second argument etc. */
#ifndef _GL_ARG_NONNULL
# if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 3) || defined __clang__
# define _GL_ARG_NONNULL(params) __attribute__ ((__nonnull__ params))
# else
# define _GL_ARG_NONNULL(params)
# endif
#endif

32
gl/arpa_inet.in.h
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@ -1,19 +1,19 @@
/* A GNU-like <arpa/inet.h>.
Copyright (C) 2005-2006, 2008-2013 Free Software Foundation, Inc.
Copyright (C) 2005-2006, 2008-2023 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
GNU Lesser General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, see <http://www.gnu.org/licenses/>. */
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#ifndef _@GUARD_PREFIX@_ARPA_INET_H
@ -49,6 +49,12 @@
#ifndef _@GUARD_PREFIX@_ARPA_INET_H
#define _@GUARD_PREFIX@_ARPA_INET_H
/* Get all possible declarations of inet_ntop() and inet_pton(). */
#if (@GNULIB_INET_NTOP@ || @GNULIB_INET_PTON@ || defined GNULIB_POSIXCHECK) \
&& @HAVE_WS2TCPIP_H@
# include <ws2tcpip.h>
#endif
/* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */
/* The definition of _GL_ARG_NONNULL is copied here. */
@ -70,8 +76,8 @@
the return value is NULL and errno is set to ENOSPC. A good value
for CNT is 46.
For more details, see the POSIX:2001 specification
<http://www.opengroup.org/susv3xsh/inet_ntop.html>. */
For more details, see the POSIX:2008 specification
<https://pubs.opengroup.org/onlinepubs/9699919799/functions/inet_ntop.html>. */
# if @REPLACE_INET_NTOP@
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# undef inet_ntop
@ -97,7 +103,9 @@ _GL_CXXALIAS_SYS_CAST (inet_ntop, const char *,
(int af, const void *restrict src,
char *restrict dst, socklen_t cnt));
# endif
# if __GLIBC__ >= 2
_GL_CXXALIASWARN (inet_ntop);
# endif
#elif defined GNULIB_POSIXCHECK
# undef inet_ntop
# if HAVE_RAW_DECL_INET_NTOP
@ -126,7 +134,9 @@ _GL_FUNCDECL_SYS (inet_pton, int,
_GL_CXXALIAS_SYS (inet_pton, int,
(int af, const char *restrict src, void *restrict dst));
# endif
# if __GLIBC__ >= 2
_GL_CXXALIASWARN (inet_pton);
# endif
#elif defined GNULIB_POSIXCHECK
# undef inet_pton
# if HAVE_RAW_DECL_INET_PTON

18
gl/asnprintf.c
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@ -1,18 +1,18 @@
/* Formatted output to strings.
Copyright (C) 1999, 2002, 2006, 2009-2013 Free Software Foundation, Inc.
Copyright (C) 1999, 2002, 2006, 2009-2023 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
GNU Lesser General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, see <http://www.gnu.org/licenses/>. */
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#include <config.h>

18
gl/asprintf.c
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@ -1,19 +1,19 @@
/* Formatted output to strings.
Copyright (C) 1999, 2002, 2006-2007, 2009-2013 Free Software Foundation,
Copyright (C) 1999, 2002, 2006-2007, 2009-2023 Free Software Foundation,
Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
GNU Lesser General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, see <http://www.gnu.org/licenses/>. */
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#include <config.h>

27
gl/assert.in.h Normal file
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@ -0,0 +1,27 @@
/* Substitute for and wrapper around <assert.h>
Copyright (C) 2011-2023 Free Software Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Do not guard the include, since <assert.h> is supposed to define
the assert macro each time it is included. */
#if __GNUC__ >= 3
@PRAGMA_SYSTEM_HEADER@
#endif
@PRAGMA_COLUMNS@
#@INCLUDE_NEXT@ @NEXT_ASSERT_H@
/* The definition of static_assert is copied here. */

226
gl/attribute.h Normal file
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@ -0,0 +1,226 @@
/* ATTRIBUTE_* macros for using attributes in GCC and similar compilers
Copyright 2020-2023 Free Software Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by Paul Eggert. */
/* Provide public ATTRIBUTE_* names for the private _GL_ATTRIBUTE_*
macros used within Gnulib. */
/* These attributes can be placed in two ways:
- At the start of a declaration (i.e. even before storage-class
specifiers!); then they apply to all entities that are declared
by the declaration.
- Immediately after the name of an entity being declared by the
declaration; then they apply to that entity only. */
#ifndef _GL_ATTRIBUTE_H
#define _GL_ATTRIBUTE_H
/* This file defines two types of attributes:
* C23 standard attributes. These have macro names that do not begin with
'ATTRIBUTE_'.
* Selected GCC attributes; see:
https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html
https://gcc.gnu.org/onlinedocs/gcc/Common-Variable-Attributes.html
https://gcc.gnu.org/onlinedocs/gcc/Common-Type-Attributes.html
These names begin with 'ATTRIBUTE_' to avoid name clashes. */
/* =============== Attributes for specific kinds of functions =============== */
/* Attributes for functions that should not be used. */
/* Warn if the entity is used. */
/* Applies to:
- function, variable,
- struct, union, struct/union member,
- enumeration, enumeration item,
- typedef,
in C++ also: namespace, class, template specialization. */
#define DEPRECATED _GL_ATTRIBUTE_DEPRECATED
/* If a function call is not optimized way, warn with MSG. */
/* Applies to: functions. */
#define ATTRIBUTE_WARNING(msg) _GL_ATTRIBUTE_WARNING (msg)
/* If a function call is not optimized way, report an error with MSG. */
/* Applies to: functions. */
#define ATTRIBUTE_ERROR(msg) _GL_ATTRIBUTE_ERROR (msg)
/* Attributes for memory-allocating functions. */
/* The function returns a pointer to freshly allocated memory. */
/* Applies to: functions. */
#define ATTRIBUTE_MALLOC _GL_ATTRIBUTE_MALLOC
/* ATTRIBUTE_ALLOC_SIZE ((N)) - The Nth argument of the function
is the size of the returned memory block.
ATTRIBUTE_ALLOC_SIZE ((M, N)) - Multiply the Mth and Nth arguments
to determine the size of the returned memory block. */
/* Applies to: function, pointer to function, function types. */
#define ATTRIBUTE_ALLOC_SIZE(args) _GL_ATTRIBUTE_ALLOC_SIZE (args)
/* ATTRIBUTE_DEALLOC (F, I) declares that the function returns pointers
that can be freed by passing them as the Ith argument to the
function F.
ATTRIBUTE_DEALLOC_FREE declares that the function returns pointers that
can be freed via 'free'; it can be used only after declaring 'free'. */
/* Applies to: functions. Cannot be used on inline functions. */
#define ATTRIBUTE_DEALLOC(f, i) _GL_ATTRIBUTE_DEALLOC(f, i)
#define ATTRIBUTE_DEALLOC_FREE _GL_ATTRIBUTE_DEALLOC_FREE
/* Attributes for variadic functions. */
/* The variadic function expects a trailing NULL argument.
ATTRIBUTE_SENTINEL () - The last argument is NULL (requires C99).
ATTRIBUTE_SENTINEL ((N)) - The (N+1)st argument from the end is NULL. */
/* Applies to: functions. */
#define ATTRIBUTE_SENTINEL(pos) _GL_ATTRIBUTE_SENTINEL (pos)
/* ================== Attributes for compiler diagnostics ================== */
/* Attributes that help the compiler diagnose programmer mistakes.
Some of them may also help for some compiler optimizations. */
/* ATTRIBUTE_FORMAT ((ARCHETYPE, STRING-INDEX, FIRST-TO-CHECK)) -
The STRING-INDEXth function argument is a format string of style
ARCHETYPE, which is one of:
printf, gnu_printf
scanf, gnu_scanf,
strftime, gnu_strftime,
strfmon,
or the same thing prefixed and suffixed with '__'.
If FIRST-TO-CHECK is not 0, arguments starting at FIRST-TO_CHECK
are suitable for the format string. */
/* Applies to: functions. */
#define ATTRIBUTE_FORMAT(spec) _GL_ATTRIBUTE_FORMAT (spec)
/* ATTRIBUTE_NONNULL ((N1, N2,...)) - Arguments N1, N2,... must not be NULL.
ATTRIBUTE_NONNULL () - All pointer arguments must not be null. */
/* Applies to: functions. */
#define ATTRIBUTE_NONNULL(args) _GL_ATTRIBUTE_NONNULL (args)
/* The function's return value is a non-NULL pointer. */
/* Applies to: functions. */
#define ATTRIBUTE_RETURNS_NONNULL _GL_ATTRIBUTE_RETURNS_NONNULL
/* Warn if the caller does not use the return value,
unless the caller uses something like ignore_value. */
/* Applies to: function, enumeration, class. */
#define NODISCARD _GL_ATTRIBUTE_NODISCARD
/* Attributes that disable false alarms when the compiler diagnoses
programmer "mistakes". */
/* Do not warn if the entity is not used. */
/* Applies to:
- function, variable,
- struct, union, struct/union member,
- enumeration, enumeration item,
- typedef,
in C++ also: class. */
#define MAYBE_UNUSED _GL_ATTRIBUTE_MAYBE_UNUSED
/* The contents of a character array is not meant to be NUL-terminated. */
/* Applies to: struct/union members and variables that are arrays of element
type '[[un]signed] char'. */
#define ATTRIBUTE_NONSTRING _GL_ATTRIBUTE_NONSTRING
/* Do not warn if control flow falls through to the immediately
following 'case' or 'default' label. */
/* Applies to: Empty statement (;), inside a 'switch' statement. */
#define FALLTHROUGH _GL_ATTRIBUTE_FALLTHROUGH
/* ================== Attributes for debugging information ================== */
/* Attributes regarding debugging information emitted by the compiler. */
/* Omit the function from stack traces when debugging. */
/* Applies to: function. */
#define ATTRIBUTE_ARTIFICIAL _GL_ATTRIBUTE_ARTIFICIAL
/* Make the entity visible to debuggers etc., even with '-fwhole-program'. */
/* Applies to: functions, variables. */
#define ATTRIBUTE_EXTERNALLY_VISIBLE _GL_ATTRIBUTE_EXTERNALLY_VISIBLE
/* ========== Attributes that mainly direct compiler optimizations ========== */
/* The function does not throw exceptions. */
/* Applies to: functions. */
#define ATTRIBUTE_NOTHROW _GL_ATTRIBUTE_NOTHROW
/* Do not inline the function. */
/* Applies to: functions. */
#define ATTRIBUTE_NOINLINE _GL_ATTRIBUTE_NOINLINE
/* Always inline the function, and report an error if the compiler
cannot inline. */
/* Applies to: function. */
#define ATTRIBUTE_ALWAYS_INLINE _GL_ATTRIBUTE_ALWAYS_INLINE
/* It is OK for a compiler to omit duplicate calls with the same arguments.
This attribute is safe for a function that neither depends on
nor affects observable state, and always returns exactly once -
e.g., does not loop forever, and does not call longjmp.
(This attribute is stricter than ATTRIBUTE_PURE.) */
/* Applies to: functions. */
#define ATTRIBUTE_CONST _GL_ATTRIBUTE_CONST
/* It is OK for a compiler to omit duplicate calls with the same
arguments if observable state is not changed between calls.
This attribute is safe for a function that does not affect
observable state, and always returns exactly once.
(This attribute is looser than ATTRIBUTE_CONST.) */
/* Applies to: functions. */
#define ATTRIBUTE_PURE _GL_ATTRIBUTE_PURE
/* The function is rarely executed. */
/* Applies to: functions. */
#define ATTRIBUTE_COLD _GL_ATTRIBUTE_COLD
/* If called from some other compilation unit, the function executes
code from that unit only by return or by exception handling,
letting the compiler optimize that unit more aggressively. */
/* Applies to: functions. */
#define ATTRIBUTE_LEAF _GL_ATTRIBUTE_LEAF
/* For struct members: The member has the smallest possible alignment.
For struct, union, class: All members have the smallest possible alignment,
minimizing the memory required. */
/* Applies to: struct members, struct, union,
in C++ also: class. */
#define ATTRIBUTE_PACKED _GL_ATTRIBUTE_PACKED
/* ================ Attributes that make invalid code valid ================ */
/* Attributes that prevent fatal compiler optimizations for code that is not
fully ISO C compliant. */
/* Pointers to the type may point to the same storage as pointers to
other types, thus disabling strict aliasing optimization. */
/* Applies to: types. */
#define ATTRIBUTE_MAY_ALIAS _GL_ATTRIBUTE_MAY_ALIAS
#endif /* _GL_ATTRIBUTE_H */

126
gl/base64.c
View file

@ -1,24 +1,24 @@
/* base64.c -- Encode binary data using printable characters.
Copyright (C) 1999-2001, 2004-2006, 2009-2013 Free Software Foundation, Inc.
Copyright (C) 1999-2001, 2004-2006, 2009-2023 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
GNU Lesser General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, see <http://www.gnu.org/licenses/>. */
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by Simon Josefsson. Partially adapted from GNU MailUtils
* (mailbox/filter_trans.c, as of 2004-11-28). Improved by review
* from Paul Eggert, Bruno Haible, and Stepan Kasal.
*
* See also RFC 4648 <http://www.ietf.org/rfc/rfc4648.txt>.
* See also RFC 4648 <https://www.ietf.org/rfc/rfc4648.txt>.
*
* Be careful with error checking. Here is how you would typically
* use these functions:
@ -30,7 +30,7 @@
* FAIL: memory allocation error
* OK: data in OUT/OUTLEN
*
* size_t outlen = base64_encode_alloc (in, inlen, &out);
* idx_t outlen = base64_encode_alloc (in, inlen, &out);
* if (out == NULL && outlen == 0 && inlen != 0)
* FAIL: input too long
* if (out == NULL)
@ -44,51 +44,84 @@
/* Get prototype. */
#include "base64.h"
/* Get malloc. */
#include <stdlib.h>
/* Get imalloc. */
#include <ialloc.h>
#include <intprops.h>
/* Get UCHAR_MAX. */
#include <limits.h>
#include <string.h>
/* C89 compliant way to cast 'char' to 'unsigned char'. */
/* Convert 'char' to 'unsigned char' without casting. */
static unsigned char
to_uchar (char ch)
{
return ch;
}
static const char b64c[64] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
/* Base64 encode IN array of size INLEN into OUT array. OUT needs
to be of length >= BASE64_LENGTH(INLEN), and INLEN needs to be
a multiple of 3. */
static void
base64_encode_fast (const char *restrict in, idx_t inlen, char *restrict out)
{
while (inlen)
{
*out++ = b64c[(to_uchar (in[0]) >> 2) & 0x3f];
*out++ = b64c[((to_uchar (in[0]) << 4) + (to_uchar (in[1]) >> 4)) & 0x3f];
*out++ = b64c[((to_uchar (in[1]) << 2) + (to_uchar (in[2]) >> 6)) & 0x3f];
*out++ = b64c[to_uchar (in[2]) & 0x3f];
inlen -= 3;
in += 3;
}
}
/* Base64 encode IN array of size INLEN into OUT array of size OUTLEN.
If OUTLEN is less than BASE64_LENGTH(INLEN), write as many bytes as
possible. If OUTLEN is larger than BASE64_LENGTH(INLEN), also zero
terminate the output buffer. */
void
base64_encode (const char *restrict in, size_t inlen,
char *restrict out, size_t outlen)
base64_encode (const char *restrict in, idx_t inlen,
char *restrict out, idx_t outlen)
{
static const char b64str[64] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
/* Note this outlen constraint can be enforced at compile time.
I.E. that the output buffer is exactly large enough to hold
the encoded inlen bytes. The inlen constraints (of corresponding
to outlen, and being a multiple of 3) can change at runtime
at the end of input. However the common case when reading
large inputs is to have both constraints satisfied, so we depend
on both in base_encode_fast(). */
if (outlen % 4 == 0 && inlen == (outlen >> 2) * 3)
{
base64_encode_fast (in, inlen, out);
return;
}
while (inlen && outlen)
{
*out++ = b64str[(to_uchar (in[0]) >> 2) & 0x3f];
*out++ = b64c[(to_uchar (in[0]) >> 2) & 0x3f];
if (!--outlen)
break;
*out++ = b64str[((to_uchar (in[0]) << 4)
*out++ = b64c[((to_uchar (in[0]) << 4)
+ (--inlen ? to_uchar (in[1]) >> 4 : 0))
& 0x3f];
if (!--outlen)
break;
*out++ =
(inlen
? b64str[((to_uchar (in[1]) << 2)
? b64c[((to_uchar (in[1]) << 2)
+ (--inlen ? to_uchar (in[2]) >> 6 : 0))
& 0x3f]
: '=');
if (!--outlen)
break;
*out++ = inlen ? b64str[to_uchar (in[2]) & 0x3f] : '=';
*out++ = inlen ? b64c[to_uchar (in[2]) & 0x3f] : '=';
if (!--outlen)
break;
if (inlen)
@ -110,30 +143,21 @@ base64_encode (const char *restrict in, size_t inlen,
memory allocation failed, OUT is set to NULL, and the return value
indicates length of the requested memory block, i.e.,
BASE64_LENGTH(inlen) + 1. */
size_t
base64_encode_alloc (const char *in, size_t inlen, char **out)
idx_t
base64_encode_alloc (const char *in, idx_t inlen, char **out)
{
size_t outlen = 1 + BASE64_LENGTH (inlen);
/* Check for overflow in outlen computation.
*
* If there is no overflow, outlen >= inlen.
*
* If the operation (inlen + 2) overflows then it yields at most +1, so
* outlen is 0.
*
* If the multiplication overflows, we lose at least half of the
* correct value, so the result is < ((inlen + 2) / 3) * 2, which is
* less than (inlen + 2) * 0.66667, which is less than inlen as soon as
* (inlen > 4).
*/
if (inlen > outlen)
Treat negative INLEN as overflow, for better compatibility with
pre-2021-08-27 API, which used size_t. */
idx_t in_over_3 = inlen / 3 + (inlen % 3 != 0), outlen;
if (! INT_MULTIPLY_OK (in_over_3, 4, &outlen) || inlen < 0)
{
*out = NULL;
return 0;
}
outlen++;
*out = malloc (outlen);
*out = imalloc (outlen);
if (!*out)
return outlen;
@ -317,7 +341,7 @@ base64_decode_ctx_init (struct base64_decode_context *ctx)
static char *
get_4 (struct base64_decode_context *ctx,
char const *restrict *in, char const *restrict in_end,
size_t *n_non_newline)
idx_t *n_non_newline)
{
if (ctx->i == 4)
ctx->i = 0;
@ -369,8 +393,8 @@ get_4 (struct base64_decode_context *ctx,
*OUT to point to the byte after the last one written, and decrement
*OUTLEN to reflect the number of bytes remaining in *OUT. */
static bool
decode_4 (char const *restrict in, size_t inlen,
char *restrict *outp, size_t *outleft)
decode_4 (char const *restrict in, idx_t inlen,
char *restrict *outp, idx_t *outleft)
{
char *out = *outp;
if (inlen < 2)
@ -455,10 +479,10 @@ decode_4 (char const *restrict in, size_t inlen,
bool
base64_decode_ctx (struct base64_decode_context *ctx,
const char *restrict in, size_t inlen,
char *restrict out, size_t *outlen)
const char *restrict in, idx_t inlen,
char *restrict out, idx_t *outlen)
{
size_t outleft = *outlen;
idx_t outleft = *outlen;
bool ignore_newlines = ctx != NULL;
bool flush_ctx = false;
unsigned int ctx_i = 0;
@ -472,7 +496,7 @@ base64_decode_ctx (struct base64_decode_context *ctx,
while (true)
{
size_t outleft_save = outleft;
idx_t outleft_save = outleft;
if (ctx_i == 0 && !flush_ctx)
{
while (true)
@ -546,17 +570,17 @@ base64_decode_ctx (struct base64_decode_context *ctx,
undefined. */
bool
base64_decode_alloc_ctx (struct base64_decode_context *ctx,
const char *in, size_t inlen, char **out,
size_t *outlen)
const char *in, idx_t inlen, char **out,
idx_t *outlen)
{
/* This may allocate a few bytes too many, depending on input,
but it's not worth the extra CPU time to compute the exact size.
The exact size is 3 * (inlen + (ctx ? ctx->i : 0)) / 4, minus 1 if the
input ends with "=" and minus another 1 if the input ends with "==".
Dividing before multiplying avoids the possibility of overflow. */
size_t needlen = 3 * (inlen / 4) + 3;
Shifting before multiplying avoids the possibility of overflow. */
idx_t needlen = 3 * ((inlen >> 2) + 1);
*out = malloc (needlen);
*out = imalloc (needlen);
if (!*out)
return true;

41
gl/base64.h
View file

@ -1,28 +1,25 @@
/* base64.h -- Encode binary data using printable characters.
Copyright (C) 2004-2006, 2009-2013 Free Software Foundation, Inc.
Copyright (C) 2004-2006, 2009-2023 Free Software Foundation, Inc.
Written by Simon Josefsson.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
GNU Lesser General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, see <http://www.gnu.org/licenses/>. */
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#ifndef BASE64_H
# define BASE64_H
/* Get size_t. */
# include <stddef.h>
/* Get bool. */
# include <stdbool.h>
/* Get idx_t. */
# include <idx.h>
# ifdef __cplusplus
extern "C" {
@ -34,26 +31,26 @@ extern "C" {
struct base64_decode_context
{
unsigned int i;
int i;
char buf[4];
};
extern bool isbase64 (char ch) _GL_ATTRIBUTE_CONST;
extern void base64_encode (const char *restrict in, size_t inlen,
char *restrict out, size_t outlen);
extern void base64_encode (const char *restrict in, idx_t inlen,
char *restrict out, idx_t outlen);
extern size_t base64_encode_alloc (const char *in, size_t inlen, char **out);
extern idx_t base64_encode_alloc (const char *in, idx_t inlen, char **out);
extern void base64_decode_ctx_init (struct base64_decode_context *ctx);
extern bool base64_decode_ctx (struct base64_decode_context *ctx,
const char *restrict in, size_t inlen,
char *restrict out, size_t *outlen);
const char *restrict in, idx_t inlen,
char *restrict out, idx_t *outlen);
extern bool base64_decode_alloc_ctx (struct base64_decode_context *ctx,
const char *in, size_t inlen,
char **out, size_t *outlen);
const char *in, idx_t inlen,
char **out, idx_t *outlen);
#define base64_decode(in, inlen, out, outlen) \
base64_decode_ctx (NULL, in, inlen, out, outlen)

37
gl/basename-lgpl.c
View file

@ -1,37 +1,36 @@
/* basename.c -- return the last element in a file name
Copyright (C) 1990, 1998-2001, 2003-2006, 2009-2013 Free Software
Copyright (C) 1990, 1998-2001, 2003-2006, 2009-2023 Free Software
Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
GNU Lesser General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#include <config.h>
#include "dirname.h"
/* Specification. */
#include "basename-lgpl.h"
#include <string.h>
/* Return the address of the last file name component of NAME. If
NAME has no relative file name components because it is a file
system root, return the empty string. */
#include "filename.h"
char *
last_component (char const *name)
{
char const *base = name + FILE_SYSTEM_PREFIX_LEN (name);
char const *p;
bool saw_slash = false;
bool last_was_slash = false;
while (ISSLASH (*base))
base++;
@ -39,21 +38,17 @@ last_component (char const *name)
for (p = base; *p; p++)
{
if (ISSLASH (*p))
saw_slash = true;
else if (saw_slash)
last_was_slash = true;
else if (last_was_slash)
{
base = p;
saw_slash = false;
last_was_slash = false;
}
}
return (char *) base;
}
/* Return the length of the basename NAME. Typically NAME is the
value returned by base_name or last_component. Act like strlen
(NAME), except omit all trailing slashes. */
size_t
base_len (char const *name)
{

78
gl/basename-lgpl.h Normal file
View file

@ -0,0 +1,78 @@
/* Extract the last component (base name) of a file name.
Copyright (C) 1998, 2001, 2003-2006, 2009-2023 Free Software Foundation,
Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#ifndef _BASENAME_LGPL_H
#define _BASENAME_LGPL_H
#include <stddef.h>
#ifndef DOUBLE_SLASH_IS_DISTINCT_ROOT
# define DOUBLE_SLASH_IS_DISTINCT_ROOT 0
#endif
#ifdef __cplusplus
extern "C" {
#endif
/* Return the address of the last file name component of FILENAME.
If FILENAME has some trailing slash(es), they are considered to be
part of the last component.
If FILENAME has no relative file name components because it is a file
system root, return the empty string.
Examples:
FILENAME RESULT
"foo.c" "foo.c"
"foo/bar.c" "bar.c"
"/foo/bar.c" "bar.c"
"foo/bar/" "bar/"
"foo/bar//" "bar//"
"/" ""
"//" ""
"" ""
The return value is a tail of the given FILENAME; do NOT free() it! */
/* This function was traditionally called 'basename', but we avoid this
function name because
* Various platforms have different functions in their libc.
In particular, the glibc basename(), defined in <string.h>, does
not consider trailing slashes to be part of the component:
FILENAME RESULT
"foo/bar/" ""
"foo/bar//" ""
* The 'basename' command eliminates trailing slashes and for a root
produces a non-empty result:
FILENAME RESULT
"foo/bar/" "bar"
"foo/bar//" "bar"
"/" "/"
"//" "/"
*/
extern char *last_component (char const *filename) _GL_ATTRIBUTE_PURE;
/* Return the length of the basename FILENAME.
Typically FILENAME is the value returned by base_name or last_component.
Act like strlen (FILENAME), except omit all trailing slashes. */
extern size_t base_len (char const *filename) _GL_ATTRIBUTE_PURE;
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* _BASENAME_LGPL_H */

56
gl/basename.c
View file

@ -1,11 +1,11 @@
/* basename.c -- return the last element in a file name
Copyright (C) 1990, 1998-2001, 2003-2006, 2009-2013 Free Software
Copyright (C) 1990, 1998-2001, 2003-2006, 2009-2023 Free Software
Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
@ -14,7 +14,7 @@
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#include <config.h>
@ -22,37 +22,43 @@
#include <string.h>
#include "xalloc.h"
#include "xstrndup.h"
char *
base_name (char const *name)
{
char const *base = last_component (name);
size_t length;
/* If there is no last component, then name is a file system root or the
empty string. */
if (! *base)
return xstrndup (name, base_len (name));
/* Collapse a sequence of trailing slashes into one. */
length = base_len (base);
if (ISSLASH (base[length]))
length++;
/* On systems with drive letters, "a/b:c" must return "./b:c" rather
than "b:c" to avoid confusion with a drive letter. On systems
with pure POSIX semantics, this is not an issue. */
if (FILE_SYSTEM_PREFIX_LEN (base))
idx_t length;
int dotslash_len;
if (*base)
{
length = base_len (base);
/* Collapse a sequence of trailing slashes into one. */
length += ISSLASH (base[length]);
/* On systems with drive letters, "a/b:c" must return "./b:c" rather
than "b:c" to avoid confusion with a drive letter. On systems
with pure POSIX semantics, this is not an issue. */
dotslash_len = FILE_SYSTEM_PREFIX_LEN (base) != 0 ? 2 : 0;
}
else
{
/* There is no last component, so NAME is a file system root or
the empty string. */
base = name;
length = base_len (base);
dotslash_len = 0;
}
char *p = ximalloc (dotslash_len + length + 1);
if (dotslash_len)
{
char *p = xmalloc (length + 3);
p[0] = '.';
p[1] = '/';
memcpy (p + 2, base, length);
p[length + 2] = '\0';
return p;
}
/* Finally, copy the basename. */
return xstrndup (base, length);
memcpy (p + dotslash_len, base, length);
p[dotslash_len + length] = '\0';
return p;
}

18
gl/btowc.c
View file

@ -1,19 +1,19 @@
/* Convert unibyte character to wide character.
Copyright (C) 2008, 2010-2013 Free Software Foundation, Inc.
Copyright (C) 2008, 2010-2023 Free Software Foundation, Inc.
Written by Bruno Haible <bruno@clisp.org>, 2008.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
GNU Lesser General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#include <config.h>

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/* byteswap.h - Byte swapping
Copyright (C) 2005, 2007, 2009-2023 Free Software Foundation, Inc.
Written by Oskar Liljeblad <oskar@osk.mine.nu>, 2005.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#ifndef _GL_BYTESWAP_H
#define _GL_BYTESWAP_H
/* Given an unsigned 16-bit argument X, return the value corresponding to
X with reversed byte order. */
#define bswap_16(x) ((((x) & 0x00FF) << 8) | \
(((x) & 0xFF00) >> 8))
/* Given an unsigned 32-bit argument X, return the value corresponding to
X with reversed byte order. */
#define bswap_32(x) ((((x) & 0x000000FF) << 24) | \
(((x) & 0x0000FF00) << 8) | \
(((x) & 0x00FF0000) >> 8) | \
(((x) & 0xFF000000) >> 24))
/* Given an unsigned 64-bit argument X, return the value corresponding to
X with reversed byte order. */
#define bswap_64(x) ((((x) & 0x00000000000000FFULL) << 56) | \
(((x) & 0x000000000000FF00ULL) << 40) | \
(((x) & 0x0000000000FF0000ULL) << 24) | \
(((x) & 0x00000000FF000000ULL) << 8) | \
(((x) & 0x000000FF00000000ULL) >> 8) | \
(((x) & 0x0000FF0000000000ULL) >> 24) | \
(((x) & 0x00FF000000000000ULL) >> 40) | \
(((x) & 0xFF00000000000000ULL) >> 56))
#endif /* _GL_BYTESWAP_H */

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/* C++ compatible function declaration macros.
Copyright (C) 2010-2023 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#ifndef _GL_CXXDEFS_H
#define _GL_CXXDEFS_H
/* Begin/end the GNULIB_NAMESPACE namespace. */
#if defined __cplusplus && defined GNULIB_NAMESPACE
# define _GL_BEGIN_NAMESPACE namespace GNULIB_NAMESPACE {
# define _GL_END_NAMESPACE }
#else
# define _GL_BEGIN_NAMESPACE
# define _GL_END_NAMESPACE
#endif
/* The three most frequent use cases of these macros are:
* For providing a substitute for a function that is missing on some
platforms, but is declared and works fine on the platforms on which
it exists:
#if @GNULIB_FOO@
# if !@HAVE_FOO@
_GL_FUNCDECL_SYS (foo, ...);
# endif
_GL_CXXALIAS_SYS (foo, ...);
_GL_CXXALIASWARN (foo);
#elif defined GNULIB_POSIXCHECK
...
#endif
* For providing a replacement for a function that exists on all platforms,
but is broken/insufficient and needs to be replaced on some platforms:
#if @GNULIB_FOO@
# if @REPLACE_FOO@
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# undef foo
# define foo rpl_foo
# endif
_GL_FUNCDECL_RPL (foo, ...);
_GL_CXXALIAS_RPL (foo, ...);
# else
_GL_CXXALIAS_SYS (foo, ...);
# endif
_GL_CXXALIASWARN (foo);
#elif defined GNULIB_POSIXCHECK
...
#endif
* For providing a replacement for a function that exists on some platforms
but is broken/insufficient and needs to be replaced on some of them and
is additionally either missing or undeclared on some other platforms:
#if @GNULIB_FOO@
# if @REPLACE_FOO@
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# undef foo
# define foo rpl_foo
# endif
_GL_FUNCDECL_RPL (foo, ...);
_GL_CXXALIAS_RPL (foo, ...);
# else
# if !@HAVE_FOO@ or if !@HAVE_DECL_FOO@
_GL_FUNCDECL_SYS (foo, ...);
# endif
_GL_CXXALIAS_SYS (foo, ...);
# endif
_GL_CXXALIASWARN (foo);
#elif defined GNULIB_POSIXCHECK
...
#endif
*/
/* _GL_EXTERN_C declaration;
performs the declaration with C linkage. */
#if defined __cplusplus
# define _GL_EXTERN_C extern "C"
#else
# define _GL_EXTERN_C extern
#endif
/* _GL_FUNCDECL_RPL (func, rettype, parameters_and_attributes);
declares a replacement function, named rpl_func, with the given prototype,
consisting of return type, parameters, and attributes.
Example:
_GL_FUNCDECL_RPL (open, int, (const char *filename, int flags, ...)
_GL_ARG_NONNULL ((1)));
*/
#define _GL_FUNCDECL_RPL(func,rettype,parameters_and_attributes) \
_GL_FUNCDECL_RPL_1 (rpl_##func, rettype, parameters_and_attributes)
#define _GL_FUNCDECL_RPL_1(rpl_func,rettype,parameters_and_attributes) \
_GL_EXTERN_C rettype rpl_func parameters_and_attributes
/* _GL_FUNCDECL_SYS (func, rettype, parameters_and_attributes);
declares the system function, named func, with the given prototype,
consisting of return type, parameters, and attributes.
Example:
_GL_FUNCDECL_SYS (open, int, (const char *filename, int flags, ...)
_GL_ARG_NONNULL ((1)));
*/
#define _GL_FUNCDECL_SYS(func,rettype,parameters_and_attributes) \
_GL_EXTERN_C rettype func parameters_and_attributes
/* _GL_CXXALIAS_RPL (func, rettype, parameters);
declares a C++ alias called GNULIB_NAMESPACE::func
that redirects to rpl_func, if GNULIB_NAMESPACE is defined.
Example:
_GL_CXXALIAS_RPL (open, int, (const char *filename, int flags, ...));
Wrapping rpl_func in an object with an inline conversion operator
avoids a reference to rpl_func unless GNULIB_NAMESPACE::func is
actually used in the program. */
#define _GL_CXXALIAS_RPL(func,rettype,parameters) \
_GL_CXXALIAS_RPL_1 (func, rpl_##func, rettype, parameters)
#if defined __cplusplus && defined GNULIB_NAMESPACE
# define _GL_CXXALIAS_RPL_1(func,rpl_func,rettype,parameters) \
namespace GNULIB_NAMESPACE \
{ \
static const struct _gl_ ## func ## _wrapper \
{ \
typedef rettype (*type) parameters; \
\
inline operator type () const \
{ \
return ::rpl_func; \
} \
} func = {}; \
} \
_GL_EXTERN_C int _gl_cxxalias_dummy
#else
# define _GL_CXXALIAS_RPL_1(func,rpl_func,rettype,parameters) \
_GL_EXTERN_C int _gl_cxxalias_dummy
#endif
/* _GL_CXXALIAS_MDA (func, rettype, parameters);
is to be used when func is a Microsoft deprecated alias, on native Windows.
It declares a C++ alias called GNULIB_NAMESPACE::func
that redirects to _func, if GNULIB_NAMESPACE is defined.
Example:
_GL_CXXALIAS_MDA (open, int, (const char *filename, int flags, ...));
*/
#define _GL_CXXALIAS_MDA(func,rettype,parameters) \
_GL_CXXALIAS_RPL_1 (func, _##func, rettype, parameters)
/* _GL_CXXALIAS_RPL_CAST_1 (func, rpl_func, rettype, parameters);
is like _GL_CXXALIAS_RPL_1 (func, rpl_func, rettype, parameters);
except that the C function rpl_func may have a slightly different
declaration. A cast is used to silence the "invalid conversion" error
that would otherwise occur. */
#if defined __cplusplus && defined GNULIB_NAMESPACE
# define _GL_CXXALIAS_RPL_CAST_1(func,rpl_func,rettype,parameters) \
namespace GNULIB_NAMESPACE \
{ \
static const struct _gl_ ## func ## _wrapper \
{ \
typedef rettype (*type) parameters; \
\
inline operator type () const \
{ \
return reinterpret_cast<type>(::rpl_func); \
} \
} func = {}; \
} \
_GL_EXTERN_C int _gl_cxxalias_dummy
#else
# define _GL_CXXALIAS_RPL_CAST_1(func,rpl_func,rettype,parameters) \
_GL_EXTERN_C int _gl_cxxalias_dummy
#endif
/* _GL_CXXALIAS_MDA_CAST (func, rettype, parameters);
is like _GL_CXXALIAS_MDA (func, rettype, parameters);
except that the C function func may have a slightly different declaration.
A cast is used to silence the "invalid conversion" error that would
otherwise occur. */
#define _GL_CXXALIAS_MDA_CAST(func,rettype,parameters) \
_GL_CXXALIAS_RPL_CAST_1 (func, _##func, rettype, parameters)
/* _GL_CXXALIAS_SYS (func, rettype, parameters);
declares a C++ alias called GNULIB_NAMESPACE::func
that redirects to the system provided function func, if GNULIB_NAMESPACE
is defined.
Example:
_GL_CXXALIAS_SYS (open, int, (const char *filename, int flags, ...));
Wrapping func in an object with an inline conversion operator
avoids a reference to func unless GNULIB_NAMESPACE::func is
actually used in the program. */
#if defined __cplusplus && defined GNULIB_NAMESPACE
# define _GL_CXXALIAS_SYS(func,rettype,parameters) \
namespace GNULIB_NAMESPACE \
{ \
static const struct _gl_ ## func ## _wrapper \
{ \
typedef rettype (*type) parameters; \
\
inline operator type () const \
{ \
return ::func; \
} \
} func = {}; \
} \
_GL_EXTERN_C int _gl_cxxalias_dummy
#else
# define _GL_CXXALIAS_SYS(func,rettype,parameters) \
_GL_EXTERN_C int _gl_cxxalias_dummy
#endif
/* _GL_CXXALIAS_SYS_CAST (func, rettype, parameters);
is like _GL_CXXALIAS_SYS (func, rettype, parameters);
except that the C function func may have a slightly different declaration.
A cast is used to silence the "invalid conversion" error that would
otherwise occur. */
#if defined __cplusplus && defined GNULIB_NAMESPACE
# define _GL_CXXALIAS_SYS_CAST(func,rettype,parameters) \
namespace GNULIB_NAMESPACE \
{ \
static const struct _gl_ ## func ## _wrapper \
{ \
typedef rettype (*type) parameters; \
\
inline operator type () const \
{ \
return reinterpret_cast<type>(::func); \
} \
} func = {}; \
} \
_GL_EXTERN_C int _gl_cxxalias_dummy
#else
# define _GL_CXXALIAS_SYS_CAST(func,rettype,parameters) \
_GL_EXTERN_C int _gl_cxxalias_dummy
#endif
/* _GL_CXXALIAS_SYS_CAST2 (func, rettype, parameters, rettype2, parameters2);
is like _GL_CXXALIAS_SYS (func, rettype, parameters);
except that the C function is picked among a set of overloaded functions,
namely the one with rettype2 and parameters2. Two consecutive casts
are used to silence the "cannot find a match" and "invalid conversion"
errors that would otherwise occur. */
#if defined __cplusplus && defined GNULIB_NAMESPACE
/* The outer cast must be a reinterpret_cast.
The inner cast: When the function is defined as a set of overloaded
functions, it works as a static_cast<>, choosing the designated variant.
When the function is defined as a single variant, it works as a
reinterpret_cast<>. The parenthesized cast syntax works both ways. */
# define _GL_CXXALIAS_SYS_CAST2(func,rettype,parameters,rettype2,parameters2) \
namespace GNULIB_NAMESPACE \
{ \
static const struct _gl_ ## func ## _wrapper \
{ \
typedef rettype (*type) parameters; \
\
inline operator type () const \
{ \
return reinterpret_cast<type>((rettype2 (*) parameters2)(::func)); \
} \
} func = {}; \
} \
_GL_EXTERN_C int _gl_cxxalias_dummy
#else
# define _GL_CXXALIAS_SYS_CAST2(func,rettype,parameters,rettype2,parameters2) \
_GL_EXTERN_C int _gl_cxxalias_dummy
#endif
/* _GL_CXXALIASWARN (func);
causes a warning to be emitted when ::func is used but not when
GNULIB_NAMESPACE::func is used. func must be defined without overloaded
variants. */
#if defined __cplusplus && defined GNULIB_NAMESPACE
# define _GL_CXXALIASWARN(func) \
_GL_CXXALIASWARN_1 (func, GNULIB_NAMESPACE)
# define _GL_CXXALIASWARN_1(func,namespace) \
_GL_CXXALIASWARN_2 (func, namespace)
/* To work around GCC bug <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43881>,
we enable the warning only when not optimizing. */
# if !(defined __GNUC__ && !defined __clang__ && __OPTIMIZE__)
# define _GL_CXXALIASWARN_2(func,namespace) \
_GL_WARN_ON_USE (func, \
"The symbol ::" #func " refers to the system function. " \
"Use " #namespace "::" #func " instead.")
# elif __GNUC__ >= 3 && GNULIB_STRICT_CHECKING
# define _GL_CXXALIASWARN_2(func,namespace) \
extern __typeof__ (func) func
# else
# define _GL_CXXALIASWARN_2(func,namespace) \
_GL_EXTERN_C int _gl_cxxalias_dummy
# endif
#else
# define _GL_CXXALIASWARN(func) \
_GL_EXTERN_C int _gl_cxxalias_dummy
#endif
/* _GL_CXXALIASWARN1 (func, rettype, parameters_and_attributes);
causes a warning to be emitted when the given overloaded variant of ::func
is used but not when GNULIB_NAMESPACE::func is used. */
#if defined __cplusplus && defined GNULIB_NAMESPACE
# define _GL_CXXALIASWARN1(func,rettype,parameters_and_attributes) \
_GL_CXXALIASWARN1_1 (func, rettype, parameters_and_attributes, \
GNULIB_NAMESPACE)
# define _GL_CXXALIASWARN1_1(func,rettype,parameters_and_attributes,namespace) \
_GL_CXXALIASWARN1_2 (func, rettype, parameters_and_attributes, namespace)
/* To work around GCC bug <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43881>,
we enable the warning only when not optimizing. */
# if !(defined __GNUC__ && !defined __clang__ && __OPTIMIZE__)
# define _GL_CXXALIASWARN1_2(func,rettype,parameters_and_attributes,namespace) \
_GL_WARN_ON_USE_CXX (func, rettype, rettype, parameters_and_attributes, \
"The symbol ::" #func " refers to the system function. " \
"Use " #namespace "::" #func " instead.")
# else
# define _GL_CXXALIASWARN1_2(func,rettype,parameters_and_attributes,namespace) \
_GL_EXTERN_C int _gl_cxxalias_dummy
# endif
#else
# define _GL_CXXALIASWARN1(func,rettype,parameters_and_attributes) \
_GL_EXTERN_C int _gl_cxxalias_dummy
#endif
#endif /* _GL_CXXDEFS_H */

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/* calloc() function that is glibc compatible.
This wrapper function is required at least on Tru64 UNIX 5.1 and mingw.
Copyright (C) 2004-2007, 2009-2023 Free Software Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* written by Jim Meyering and Bruno Haible */
#include <config.h>
/* Specification. */
#include <stdlib.h>
#include <errno.h>
#include "xalloc-oversized.h"
/* Call the system's calloc below. */
#undef calloc
/* Allocate and zero-fill an NxS-byte block of memory from the heap,
even if N or S is zero. */
void *
rpl_calloc (size_t n, size_t s)
{
if (n == 0 || s == 0)
n = s = 1;
if (xalloc_oversized (n, s))
{
errno = ENOMEM;
return NULL;
}
void *result = calloc (n, s);
#if !HAVE_MALLOC_POSIX
if (result == NULL)
errno = ENOMEM;
#endif
return result;
}

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/* Copyright (C) 1992-2023 Free Software Foundation, Inc.
Copyright The GNU Toolchain Authors.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#ifndef _SYS_CDEFS_H
#define _SYS_CDEFS_H 1
/* We are almost always included from features.h. */
#ifndef _FEATURES_H
# include <features.h>
#endif
/* The GNU libc does not support any K&R compilers or the traditional mode
of ISO C compilers anymore. Check for some of the combinations not
supported anymore. */
#if defined __GNUC__ && !defined __STDC__
# error "You need a ISO C conforming compiler to use the glibc headers"
#endif
/* Some user header file might have defined this before. */
#undef __P
#undef __PMT
/* Compilers that lack __has_attribute may object to
#if defined __has_attribute && __has_attribute (...)
even though they do not need to evaluate the right-hand side of the &&.
Similarly for __has_builtin, etc. */
#if (defined __has_attribute \
&& (!defined __clang_minor__ \
|| (defined __apple_build_version__ \
? 6000000 <= __apple_build_version__ \
: 3 < __clang_major__ + (5 <= __clang_minor__))))
# define __glibc_has_attribute(attr) __has_attribute (attr)
#else
# define __glibc_has_attribute(attr) 0
#endif
#ifdef __has_builtin
# define __glibc_has_builtin(name) __has_builtin (name)
#else
# define __glibc_has_builtin(name) 0
#endif
#ifdef __has_extension
# define __glibc_has_extension(ext) __has_extension (ext)
#else
# define __glibc_has_extension(ext) 0
#endif
#if defined __GNUC__ || defined __clang__
/* All functions, except those with callbacks or those that
synchronize memory, are leaf functions. */
# if __GNUC_PREREQ (4, 6) && !defined _LIBC
# define __LEAF , __leaf__
# define __LEAF_ATTR __attribute__ ((__leaf__))
# else
# define __LEAF
# define __LEAF_ATTR
# endif
/* GCC can always grok prototypes. For C++ programs we add throw()
to help it optimize the function calls. But this only works with
gcc 2.8.x and egcs. For gcc 3.4 and up we even mark C functions
as non-throwing using a function attribute since programs can use
the -fexceptions options for C code as well. */
# if !defined __cplusplus \
&& (__GNUC_PREREQ (3, 4) || __glibc_has_attribute (__nothrow__))
# define __THROW __attribute__ ((__nothrow__ __LEAF))
# define __THROWNL __attribute__ ((__nothrow__))
# define __NTH(fct) __attribute__ ((__nothrow__ __LEAF)) fct
# define __NTHNL(fct) __attribute__ ((__nothrow__)) fct
# else
# if defined __cplusplus && (__GNUC_PREREQ (2,8) || __clang_major >= 4)
# if __cplusplus >= 201103L
# define __THROW noexcept (true)
# else
# define __THROW throw ()
# endif
# define __THROWNL __THROW
# define __NTH(fct) __LEAF_ATTR fct __THROW
# define __NTHNL(fct) fct __THROW
# else
# define __THROW
# define __THROWNL
# define __NTH(fct) fct
# define __NTHNL(fct) fct
# endif
# endif
#else /* Not GCC or clang. */
# if (defined __cplusplus \
|| (defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L))
# define __inline inline
# else
# define __inline /* No inline functions. */
# endif
# define __THROW
# define __THROWNL
# define __NTH(fct) fct
#endif /* GCC || clang. */
/* These two macros are not used in glibc anymore. They are kept here
only because some other projects expect the macros to be defined. */
#define __P(args) args
#define __PMT(args) args
/* For these things, GCC behaves the ANSI way normally,
and the non-ANSI way under -traditional. */
#define __CONCAT(x,y) x ## y
#define __STRING(x) #x
/* This is not a typedef so `const __ptr_t' does the right thing. */
#define __ptr_t void *
/* C++ needs to know that types and declarations are C, not C++. */
#ifdef __cplusplus
# define __BEGIN_DECLS extern "C" {
# define __END_DECLS }
#else
# define __BEGIN_DECLS
# define __END_DECLS
#endif
/* Fortify support. */
#define __bos(ptr) __builtin_object_size (ptr, __USE_FORTIFY_LEVEL > 1)
#define __bos0(ptr) __builtin_object_size (ptr, 0)
/* Use __builtin_dynamic_object_size at _FORTIFY_SOURCE=3 when available. */
#if __USE_FORTIFY_LEVEL == 3 && (__glibc_clang_prereq (9, 0) \
|| __GNUC_PREREQ (12, 0))
# define __glibc_objsize0(__o) __builtin_dynamic_object_size (__o, 0)
# define __glibc_objsize(__o) __builtin_dynamic_object_size (__o, 1)
#else
# define __glibc_objsize0(__o) __bos0 (__o)
# define __glibc_objsize(__o) __bos (__o)
#endif
/* Compile time conditions to choose between the regular, _chk and _chk_warn
variants. These conditions should get evaluated to constant and optimized
away. */
#define __glibc_safe_len_cond(__l, __s, __osz) ((__l) <= (__osz) / (__s))
#define __glibc_unsigned_or_positive(__l) \
((__typeof (__l)) 0 < (__typeof (__l)) -1 \
|| (__builtin_constant_p (__l) && (__l) > 0))
/* Length is known to be safe at compile time if the __L * __S <= __OBJSZ
condition can be folded to a constant and if it is true, or unknown (-1) */
#define __glibc_safe_or_unknown_len(__l, __s, __osz) \
((__osz) == (__SIZE_TYPE__) -1 \
|| (__glibc_unsigned_or_positive (__l) \
&& __builtin_constant_p (__glibc_safe_len_cond ((__SIZE_TYPE__) (__l), \
(__s), (__osz))) \
&& __glibc_safe_len_cond ((__SIZE_TYPE__) (__l), (__s), (__osz))))
/* Conversely, we know at compile time that the length is unsafe if the
__L * __S <= __OBJSZ condition can be folded to a constant and if it is
false. */
#define __glibc_unsafe_len(__l, __s, __osz) \
(__glibc_unsigned_or_positive (__l) \
&& __builtin_constant_p (__glibc_safe_len_cond ((__SIZE_TYPE__) (__l), \
__s, __osz)) \
&& !__glibc_safe_len_cond ((__SIZE_TYPE__) (__l), __s, __osz))
/* Fortify function f. __f_alias, __f_chk and __f_chk_warn must be
declared. */
#define __glibc_fortify(f, __l, __s, __osz, ...) \
(__glibc_safe_or_unknown_len (__l, __s, __osz) \
? __ ## f ## _alias (__VA_ARGS__) \
: (__glibc_unsafe_len (__l, __s, __osz) \
? __ ## f ## _chk_warn (__VA_ARGS__, __osz) \
: __ ## f ## _chk (__VA_ARGS__, __osz))) \
/* Fortify function f, where object size argument passed to f is the number of
elements and not total size. */
#define __glibc_fortify_n(f, __l, __s, __osz, ...) \
(__glibc_safe_or_unknown_len (__l, __s, __osz) \
? __ ## f ## _alias (__VA_ARGS__) \
: (__glibc_unsafe_len (__l, __s, __osz) \
? __ ## f ## _chk_warn (__VA_ARGS__, (__osz) / (__s)) \
: __ ## f ## _chk (__VA_ARGS__, (__osz) / (__s)))) \
#if __GNUC_PREREQ (4,3)
# define __warnattr(msg) __attribute__((__warning__ (msg)))
# define __errordecl(name, msg) \
extern void name (void) __attribute__((__error__ (msg)))
#else
# define __warnattr(msg)
# define __errordecl(name, msg) extern void name (void)
#endif
/* Support for flexible arrays.
Headers that should use flexible arrays only if they're "real"
(e.g. only if they won't affect sizeof()) should test
#if __glibc_c99_flexarr_available. */
#if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L && !defined __HP_cc
# define __flexarr []
# define __glibc_c99_flexarr_available 1
#elif __GNUC_PREREQ (2,97) || defined __clang__
/* GCC 2.97 and clang support C99 flexible array members as an extension,
even when in C89 mode or compiling C++ (any version). */
# define __flexarr []
# define __glibc_c99_flexarr_available 1
#elif defined __GNUC__
/* Pre-2.97 GCC did not support C99 flexible arrays but did have
an equivalent extension with slightly different notation. */
# define __flexarr [0]
# define __glibc_c99_flexarr_available 1
#else
/* Some other non-C99 compiler. Approximate with [1]. */
# define __flexarr [1]
# define __glibc_c99_flexarr_available 0
#endif
/* __asm__ ("xyz") is used throughout the headers to rename functions
at the assembly language level. This is wrapped by the __REDIRECT
macro, in order to support compilers that can do this some other
way. When compilers don't support asm-names at all, we have to do
preprocessor tricks instead (which don't have exactly the right
semantics, but it's the best we can do).
Example:
int __REDIRECT(setpgrp, (__pid_t pid, __pid_t pgrp), setpgid); */
#if (defined __GNUC__ && __GNUC__ >= 2) || (__clang_major__ >= 4)
# define __REDIRECT(name, proto, alias) name proto __asm__ (__ASMNAME (#alias))
# ifdef __cplusplus
# define __REDIRECT_NTH(name, proto, alias) \
name proto __THROW __asm__ (__ASMNAME (#alias))
# define __REDIRECT_NTHNL(name, proto, alias) \
name proto __THROWNL __asm__ (__ASMNAME (#alias))
# else
# define __REDIRECT_NTH(name, proto, alias) \
name proto __asm__ (__ASMNAME (#alias)) __THROW
# define __REDIRECT_NTHNL(name, proto, alias) \
name proto __asm__ (__ASMNAME (#alias)) __THROWNL
# endif
# define __ASMNAME(cname) __ASMNAME2 (__USER_LABEL_PREFIX__, cname)
# define __ASMNAME2(prefix, cname) __STRING (prefix) cname
/*
#elif __SOME_OTHER_COMPILER__
# define __REDIRECT(name, proto, alias) name proto; \
_Pragma("let " #name " = " #alias)
*/
#endif
/* GCC and clang have various useful declarations that can be made with
the '__attribute__' syntax. All of the ways we use this do fine if
they are omitted for compilers that don't understand it. */
#if !(defined __GNUC__ || defined __clang__)
# define __attribute__(xyz) /* Ignore */
#endif
/* At some point during the gcc 2.96 development the `malloc' attribute
for functions was introduced. We don't want to use it unconditionally
(although this would be possible) since it generates warnings. */
#if __GNUC_PREREQ (2,96) || __glibc_has_attribute (__malloc__)
# define __attribute_malloc__ __attribute__ ((__malloc__))
#else
# define __attribute_malloc__ /* Ignore */
#endif
/* Tell the compiler which arguments to an allocation function
indicate the size of the allocation. */
#if __GNUC_PREREQ (4, 3)
# define __attribute_alloc_size__(params) \
__attribute__ ((__alloc_size__ params))
#else
# define __attribute_alloc_size__(params) /* Ignore. */
#endif
/* Tell the compiler which argument to an allocation function
indicates the alignment of the allocation. */
#if __GNUC_PREREQ (4, 9) || __glibc_has_attribute (__alloc_align__)
# define __attribute_alloc_align__(param) \
__attribute__ ((__alloc_align__ param))
#else
# define __attribute_alloc_align__(param) /* Ignore. */
#endif
/* At some point during the gcc 2.96 development the `pure' attribute
for functions was introduced. We don't want to use it unconditionally
(although this would be possible) since it generates warnings. */
#if __GNUC_PREREQ (2,96) || __glibc_has_attribute (__pure__)
# define __attribute_pure__ __attribute__ ((__pure__))
#else
# define __attribute_pure__ /* Ignore */
#endif
/* This declaration tells the compiler that the value is constant. */
#if __GNUC_PREREQ (2,5) || __glibc_has_attribute (__const__)
# define __attribute_const__ __attribute__ ((__const__))
#else
# define __attribute_const__ /* Ignore */
#endif
#if __GNUC_PREREQ (2,7) || __glibc_has_attribute (__unused__)
# define __attribute_maybe_unused__ __attribute__ ((__unused__))
#else
# define __attribute_maybe_unused__ /* Ignore */
#endif
/* At some point during the gcc 3.1 development the `used' attribute
for functions was introduced. We don't want to use it unconditionally
(although this would be possible) since it generates warnings. */
#if __GNUC_PREREQ (3,1) || __glibc_has_attribute (__used__)
# define __attribute_used__ __attribute__ ((__used__))
# define __attribute_noinline__ __attribute__ ((__noinline__))
#else
# define __attribute_used__ __attribute__ ((__unused__))
# define __attribute_noinline__ /* Ignore */
#endif
/* Since version 3.2, gcc allows marking deprecated functions. */
#if __GNUC_PREREQ (3,2) || __glibc_has_attribute (__deprecated__)
# define __attribute_deprecated__ __attribute__ ((__deprecated__))
#else
# define __attribute_deprecated__ /* Ignore */
#endif
/* Since version 4.5, gcc also allows one to specify the message printed
when a deprecated function is used. clang claims to be gcc 4.2, but
may also support this feature. */
#if __GNUC_PREREQ (4,5) \
|| __glibc_has_extension (__attribute_deprecated_with_message__)
# define __attribute_deprecated_msg__(msg) \
__attribute__ ((__deprecated__ (msg)))
#else
# define __attribute_deprecated_msg__(msg) __attribute_deprecated__
#endif
/* At some point during the gcc 2.8 development the `format_arg' attribute
for functions was introduced. We don't want to use it unconditionally
(although this would be possible) since it generates warnings.
If several `format_arg' attributes are given for the same function, in
gcc-3.0 and older, all but the last one are ignored. In newer gccs,
all designated arguments are considered. */
#if __GNUC_PREREQ (2,8) || __glibc_has_attribute (__format_arg__)
# define __attribute_format_arg__(x) __attribute__ ((__format_arg__ (x)))
#else
# define __attribute_format_arg__(x) /* Ignore */
#endif
/* At some point during the gcc 2.97 development the `strfmon' format
attribute for functions was introduced. We don't want to use it
unconditionally (although this would be possible) since it
generates warnings. */
#if __GNUC_PREREQ (2,97) || __glibc_has_attribute (__format__)
# define __attribute_format_strfmon__(a,b) \
__attribute__ ((__format__ (__strfmon__, a, b)))
#else
# define __attribute_format_strfmon__(a,b) /* Ignore */
#endif
/* The nonnull function attribute marks pointer parameters that
must not be NULL. This has the name __nonnull in glibc,
and __attribute_nonnull__ in files shared with Gnulib to avoid
collision with a different __nonnull in DragonFlyBSD 5.9. */
#ifndef __attribute_nonnull__
# if __GNUC_PREREQ (3,3) || __glibc_has_attribute (__nonnull__)
# define __attribute_nonnull__(params) __attribute__ ((__nonnull__ params))
# else
# define __attribute_nonnull__(params)
# endif
#endif
#ifndef __nonnull
# define __nonnull(params) __attribute_nonnull__ (params)
#endif
/* The returns_nonnull function attribute marks the return type of the function
as always being non-null. */
#ifndef __returns_nonnull
# if __GNUC_PREREQ (4, 9) || __glibc_has_attribute (__returns_nonnull__)
# define __returns_nonnull __attribute__ ((__returns_nonnull__))
# else
# define __returns_nonnull
# endif
#endif
/* If fortification mode, we warn about unused results of certain
function calls which can lead to problems. */
#if __GNUC_PREREQ (3,4) || __glibc_has_attribute (__warn_unused_result__)
# define __attribute_warn_unused_result__ \
__attribute__ ((__warn_unused_result__))
# if defined __USE_FORTIFY_LEVEL && __USE_FORTIFY_LEVEL > 0
# define __wur __attribute_warn_unused_result__
# endif
#else
# define __attribute_warn_unused_result__ /* empty */
#endif
#ifndef __wur
# define __wur /* Ignore */
#endif
/* Forces a function to be always inlined. */
#if __GNUC_PREREQ (3,2) || __glibc_has_attribute (__always_inline__)
/* The Linux kernel defines __always_inline in stddef.h (283d7573), and
it conflicts with this definition. Therefore undefine it first to
allow either header to be included first. */
# undef __always_inline
# define __always_inline __inline __attribute__ ((__always_inline__))
#else
# undef __always_inline
# define __always_inline __inline
#endif
/* Associate error messages with the source location of the call site rather
than with the source location inside the function. */
#if __GNUC_PREREQ (4,3) || __glibc_has_attribute (__artificial__)
# define __attribute_artificial__ __attribute__ ((__artificial__))
#else
# define __attribute_artificial__ /* Ignore */
#endif
/* GCC 4.3 and above with -std=c99 or -std=gnu99 implements ISO C99
inline semantics, unless -fgnu89-inline is used. Using __GNUC_STDC_INLINE__
or __GNUC_GNU_INLINE is not a good enough check for gcc because gcc versions
older than 4.3 may define these macros and still not guarantee GNU inlining
semantics.
clang++ identifies itself as gcc-4.2, but has support for GNU inlining
semantics, that can be checked for by using the __GNUC_STDC_INLINE_ and
__GNUC_GNU_INLINE__ macro definitions. */
#if (!defined __cplusplus || __GNUC_PREREQ (4,3) \
|| (defined __clang__ && (defined __GNUC_STDC_INLINE__ \
|| defined __GNUC_GNU_INLINE__)))
# if defined __GNUC_STDC_INLINE__ || defined __cplusplus
# define __extern_inline extern __inline __attribute__ ((__gnu_inline__))
# define __extern_always_inline \
extern __always_inline __attribute__ ((__gnu_inline__))
# else
# define __extern_inline extern __inline
# define __extern_always_inline extern __always_inline
# endif
#endif
#ifdef __extern_always_inline
# define __fortify_function __extern_always_inline __attribute_artificial__
#endif
/* GCC 4.3 and above allow passing all anonymous arguments of an
__extern_always_inline function to some other vararg function. */
#if __GNUC_PREREQ (4,3)
# define __va_arg_pack() __builtin_va_arg_pack ()
# define __va_arg_pack_len() __builtin_va_arg_pack_len ()
#endif
/* It is possible to compile containing GCC extensions even if GCC is
run in pedantic mode if the uses are carefully marked using the
`__extension__' keyword. But this is not generally available before
version 2.8. */
#if !(__GNUC_PREREQ (2,8) || defined __clang__)
# define __extension__ /* Ignore */
#endif
/* __restrict is known in EGCS 1.2 and above, and in clang.
It works also in C++ mode (outside of arrays), but only when spelled
as '__restrict', not 'restrict'. */
#if !(__GNUC_PREREQ (2,92) || __clang_major__ >= 3)
# if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L
# define __restrict restrict
# else
# define __restrict /* Ignore */
# endif
#endif
/* ISO C99 also allows to declare arrays as non-overlapping. The syntax is
array_name[restrict]
GCC 3.1 and clang support this.
This syntax is not usable in C++ mode. */
#if (__GNUC_PREREQ (3,1) || __clang_major__ >= 3) && !defined __cplusplus
# define __restrict_arr __restrict
#else
# ifdef __GNUC__
# define __restrict_arr /* Not supported in old GCC. */
# else
# if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L
# define __restrict_arr restrict
# else
/* Some other non-C99 compiler. */
# define __restrict_arr /* Not supported. */
# endif
# endif
#endif
#if (__GNUC__ >= 3) || __glibc_has_builtin (__builtin_expect)
# define __glibc_unlikely(cond) __builtin_expect ((cond), 0)
# define __glibc_likely(cond) __builtin_expect ((cond), 1)
#else
# define __glibc_unlikely(cond) (cond)
# define __glibc_likely(cond) (cond)
#endif
#if (!defined _Noreturn \
&& (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) < 201112 \
&& !(__GNUC_PREREQ (4,7) \
|| (3 < __clang_major__ + (5 <= __clang_minor__))))
# if __GNUC_PREREQ (2,8)
# define _Noreturn __attribute__ ((__noreturn__))
# else
# define _Noreturn
# endif
#endif
#if __GNUC_PREREQ (8, 0)
/* Describes a char array whose address can safely be passed as the first
argument to strncpy and strncat, as the char array is not necessarily
a NUL-terminated string. */
# define __attribute_nonstring__ __attribute__ ((__nonstring__))
#else
# define __attribute_nonstring__
#endif
/* Undefine (also defined in libc-symbols.h). */
#undef __attribute_copy__
#if __GNUC_PREREQ (9, 0)
/* Copies attributes from the declaration or type referenced by
the argument. */
# define __attribute_copy__(arg) __attribute__ ((__copy__ (arg)))
#else
# define __attribute_copy__(arg)
#endif
#if (!defined _Static_assert && !defined __cplusplus \
&& (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) < 201112 \
&& (!(__GNUC_PREREQ (4, 6) || __clang_major__ >= 4) \
|| defined __STRICT_ANSI__))
# define _Static_assert(expr, diagnostic) \
extern int (*__Static_assert_function (void)) \
[!!sizeof (struct { int __error_if_negative: (expr) ? 2 : -1; })]
#endif
/* Gnulib avoids including these, as they don't work on non-glibc or
older glibc platforms. */
#ifndef __GNULIB_CDEFS
# include <bits/wordsize.h>
# include <bits/long-double.h>
#endif
#if __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 1
# ifdef __REDIRECT
/* Alias name defined automatically. */
# define __LDBL_REDIR(name, proto) ... unused__ldbl_redir
# define __LDBL_REDIR_DECL(name) \
extern __typeof (name) name __asm (__ASMNAME ("__" #name "ieee128"));
/* Alias name defined automatically, with leading underscores. */
# define __LDBL_REDIR2_DECL(name) \
extern __typeof (__##name) __##name \
__asm (__ASMNAME ("__" #name "ieee128"));
/* Alias name defined manually. */
# define __LDBL_REDIR1(name, proto, alias) ... unused__ldbl_redir1
# define __LDBL_REDIR1_DECL(name, alias) \
extern __typeof (name) name __asm (__ASMNAME (#alias));
# define __LDBL_REDIR1_NTH(name, proto, alias) \
__REDIRECT_NTH (name, proto, alias)
# define __REDIRECT_NTH_LDBL(name, proto, alias) \
__LDBL_REDIR1_NTH (name, proto, __##alias##ieee128)
/* Unused. */
# define __REDIRECT_LDBL(name, proto, alias) ... unused__redirect_ldbl
# define __LDBL_REDIR_NTH(name, proto) ... unused__ldbl_redir_nth
# else
_Static_assert (0, "IEEE 128-bits long double requires redirection on this platform");
# endif
#elif defined __LONG_DOUBLE_MATH_OPTIONAL && defined __NO_LONG_DOUBLE_MATH
# define __LDBL_COMPAT 1
# ifdef __REDIRECT
# define __LDBL_REDIR1(name, proto, alias) __REDIRECT (name, proto, alias)
# define __LDBL_REDIR(name, proto) \
__LDBL_REDIR1 (name, proto, __nldbl_##name)
# define __LDBL_REDIR1_NTH(name, proto, alias) __REDIRECT_NTH (name, proto, alias)
# define __LDBL_REDIR_NTH(name, proto) \
__LDBL_REDIR1_NTH (name, proto, __nldbl_##name)
# define __LDBL_REDIR2_DECL(name) \
extern __typeof (__##name) __##name __asm (__ASMNAME ("__nldbl___" #name));
# define __LDBL_REDIR1_DECL(name, alias) \
extern __typeof (name) name __asm (__ASMNAME (#alias));
# define __LDBL_REDIR_DECL(name) \
extern __typeof (name) name __asm (__ASMNAME ("__nldbl_" #name));
# define __REDIRECT_LDBL(name, proto, alias) \
__LDBL_REDIR1 (name, proto, __nldbl_##alias)
# define __REDIRECT_NTH_LDBL(name, proto, alias) \
__LDBL_REDIR1_NTH (name, proto, __nldbl_##alias)
# endif
#endif
#if (!defined __LDBL_COMPAT && __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 0) \
|| !defined __REDIRECT
# define __LDBL_REDIR1(name, proto, alias) name proto
# define __LDBL_REDIR(name, proto) name proto
# define __LDBL_REDIR1_NTH(name, proto, alias) name proto __THROW
# define __LDBL_REDIR_NTH(name, proto) name proto __THROW
# define __LDBL_REDIR2_DECL(name)
# define __LDBL_REDIR_DECL(name)
# ifdef __REDIRECT
# define __REDIRECT_LDBL(name, proto, alias) __REDIRECT (name, proto, alias)
# define __REDIRECT_NTH_LDBL(name, proto, alias) \
__REDIRECT_NTH (name, proto, alias)
# endif
#endif
/* __glibc_macro_warning (MESSAGE) issues warning MESSAGE. This is
intended for use in preprocessor macros.
Note: MESSAGE must be a _single_ string; concatenation of string
literals is not supported. */
#if __GNUC_PREREQ (4,8) || __glibc_clang_prereq (3,5)
# define __glibc_macro_warning1(message) _Pragma (#message)
# define __glibc_macro_warning(message) \
__glibc_macro_warning1 (GCC warning message)
#else
# define __glibc_macro_warning(msg)
#endif
/* Generic selection (ISO C11) is a C-only feature, available in GCC
since version 4.9. Previous versions do not provide generic
selection, even though they might set __STDC_VERSION__ to 201112L,
when in -std=c11 mode. Thus, we must check for !defined __GNUC__
when testing __STDC_VERSION__ for generic selection support.
On the other hand, Clang also defines __GNUC__, so a clang-specific
check is required to enable the use of generic selection. */
#if !defined __cplusplus \
&& (__GNUC_PREREQ (4, 9) \
|| __glibc_has_extension (c_generic_selections) \
|| (!defined __GNUC__ && defined __STDC_VERSION__ \
&& __STDC_VERSION__ >= 201112L))
# define __HAVE_GENERIC_SELECTION 1
#else
# define __HAVE_GENERIC_SELECTION 0
#endif
#if __GNUC_PREREQ (10, 0)
/* Designates a 1-based positional argument ref-index of pointer type
that can be used to access size-index elements of the pointed-to
array according to access mode, or at least one element when
size-index is not provided:
access (access-mode, <ref-index> [, <size-index>]) */
# define __attr_access(x) __attribute__ ((__access__ x))
/* For _FORTIFY_SOURCE == 3 we use __builtin_dynamic_object_size, which may
use the access attribute to get object sizes from function definition
arguments, so we can't use them on functions we fortify. Drop the object
size hints for such functions. */
# if __USE_FORTIFY_LEVEL == 3
# define __fortified_attr_access(a, o, s) __attribute__ ((__access__ (a, o)))
# else
# define __fortified_attr_access(a, o, s) __attr_access ((a, o, s))
# endif
# if __GNUC_PREREQ (11, 0)
# define __attr_access_none(argno) __attribute__ ((__access__ (__none__, argno)))
# else
# define __attr_access_none(argno)
# endif
#else
# define __fortified_attr_access(a, o, s)
# define __attr_access(x)
# define __attr_access_none(argno)
#endif
#if __GNUC_PREREQ (11, 0)
/* Designates dealloc as a function to call to deallocate objects
allocated by the declared function. */
# define __attr_dealloc(dealloc, argno) \
__attribute__ ((__malloc__ (dealloc, argno)))
# define __attr_dealloc_free __attr_dealloc (__builtin_free, 1)
#else
# define __attr_dealloc(dealloc, argno)
# define __attr_dealloc_free
#endif
/* Specify that a function such as setjmp or vfork may return
twice. */
#if __GNUC_PREREQ (4, 1)
# define __attribute_returns_twice__ __attribute__ ((__returns_twice__))
#else
# define __attribute_returns_twice__ /* Ignore. */
#endif
#endif /* sys/cdefs.h */

83
gl/cloexec.c Normal file
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@ -0,0 +1,83 @@
/* cloexec.c - set or clear the close-on-exec descriptor flag
Copyright (C) 1991, 2004-2006, 2009-2023 Free Software Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* The code is taken from glibc/manual/llio.texi */
#include <config.h>
#include "cloexec.h"
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
/* Set the 'FD_CLOEXEC' flag of DESC if VALUE is true,
or clear the flag if VALUE is false.
Return 0 on success, or -1 on error with 'errno' set.
Note that on MingW, this function does NOT protect DESC from being
inherited into spawned children. Instead, either use dup_cloexec
followed by closing the original DESC, or use interfaces such as
open or pipe2 that accept flags like O_CLOEXEC to create DESC
non-inheritable in the first place. */
int
set_cloexec_flag (int desc, bool value)
{
#ifdef F_SETFD
int flags = fcntl (desc, F_GETFD, 0);
if (0 <= flags)
{
int newflags = (value ? flags | FD_CLOEXEC : flags & ~FD_CLOEXEC);
if (flags == newflags
|| fcntl (desc, F_SETFD, newflags) != -1)
return 0;
}
return -1;
#else /* !F_SETFD */
/* Use dup2 to reject invalid file descriptors; the cloexec flag
will be unaffected. */
if (desc < 0)
{
errno = EBADF;
return -1;
}
if (dup2 (desc, desc) < 0)
/* errno is EBADF here. */
return -1;
/* There is nothing we can do on this kind of platform. Punt. */
return 0;
#endif /* !F_SETFD */
}
/* Duplicates a file handle FD, while marking the copy to be closed
prior to exec or spawn. Returns -1 and sets errno if FD could not
be duplicated. */
int
dup_cloexec (int fd)
{
return fcntl (fd, F_DUPFD_CLOEXEC, 0);
}

34
gl/cloexec.h Normal file
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@ -0,0 +1,34 @@
/* cloexec.c - set or clear the close-on-exec descriptor flag
Copyright (C) 2004, 2009-2023 Free Software Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Set the 'FD_CLOEXEC' flag of DESC if VALUE is true,
or clear the flag if VALUE is false.
Return 0 on success, or -1 on error with 'errno' set.
Note that on MingW, this function does NOT protect DESC from being
inherited into spawned children. Instead, either use dup_cloexec
followed by closing the original DESC, or use interfaces such as
open or pipe2 that accept flags like O_CLOEXEC to create DESC
non-inheritable in the first place. */
int set_cloexec_flag (int desc, bool value);
/* Duplicates a file handle FD, while marking the copy to be closed
prior to exec or spawn. Returns -1 and sets errno if FD could not
be duplicated. */
int dup_cloexec (int fd);

75
gl/close.c Normal file
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@ -0,0 +1,75 @@
/* close replacement.
Copyright (C) 2008-2023 Free Software Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#include <config.h>
/* Specification. */
#include <unistd.h>
#include <errno.h>
#include "fd-hook.h"
#if HAVE_MSVC_INVALID_PARAMETER_HANDLER
# include "msvc-inval.h"
#endif
#undef close
#if defined _WIN32 && !defined __CYGWIN__
# if HAVE_MSVC_INVALID_PARAMETER_HANDLER
static int
close_nothrow (int fd)
{
int result;
TRY_MSVC_INVAL
{
result = _close (fd);
}
CATCH_MSVC_INVAL
{
result = -1;
errno = EBADF;
}
DONE_MSVC_INVAL;
return result;
}
# else
# define close_nothrow _close
# endif
#else
# define close_nothrow close
#endif
/* Override close() to call into other gnulib modules. */
int
rpl_close (int fd)
{
#if WINDOWS_SOCKETS
int retval = execute_all_close_hooks (close_nothrow, fd);
#else
int retval = close_nothrow (fd);
#endif
#if REPLACE_FCHDIR
if (retval >= 0)
_gl_unregister_fd (fd);
#endif
return retval;
}

684
gl/config.charset
View file

@ -1,684 +0,0 @@
#! /bin/sh
# Output a system dependent table of character encoding aliases.
#
# Copyright (C) 2000-2004, 2006-2013 Free Software Foundation, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, see <http://www.gnu.org/licenses/>.
#
# The table consists of lines of the form
# ALIAS CANONICAL
#
# ALIAS is the (system dependent) result of "nl_langinfo (CODESET)".
# ALIAS is compared in a case sensitive way.
#
# CANONICAL is the GNU canonical name for this character encoding.
# It must be an encoding supported by libiconv. Support by GNU libc is
# also desirable. CANONICAL is case insensitive. Usually an upper case
# MIME charset name is preferred.
# The current list of GNU canonical charset names is as follows.
#
# name MIME? used by which systems
# (darwin = Mac OS X, woe32 = native Windows)
#
# ASCII, ANSI_X3.4-1968 glibc solaris freebsd netbsd darwin cygwin
# ISO-8859-1 Y glibc aix hpux irix osf solaris freebsd netbsd openbsd darwin cygwin
# ISO-8859-2 Y glibc aix hpux irix osf solaris freebsd netbsd openbsd darwin cygwin
# ISO-8859-3 Y glibc solaris cygwin
# ISO-8859-4 Y osf solaris freebsd netbsd openbsd darwin
# ISO-8859-5 Y glibc aix hpux irix osf solaris freebsd netbsd openbsd darwin cygwin
# ISO-8859-6 Y glibc aix hpux solaris cygwin
# ISO-8859-7 Y glibc aix hpux irix osf solaris netbsd openbsd darwin cygwin
# ISO-8859-8 Y glibc aix hpux osf solaris cygwin
# ISO-8859-9 Y glibc aix hpux irix osf solaris darwin cygwin
# ISO-8859-13 glibc netbsd openbsd darwin cygwin
# ISO-8859-14 glibc cygwin
# ISO-8859-15 glibc aix osf solaris freebsd netbsd openbsd darwin cygwin
# KOI8-R Y glibc solaris freebsd netbsd openbsd darwin
# KOI8-U Y glibc freebsd netbsd openbsd darwin cygwin
# KOI8-T glibc
# CP437 dos
# CP775 dos
# CP850 aix osf dos
# CP852 dos
# CP855 dos
# CP856 aix
# CP857 dos
# CP861 dos
# CP862 dos
# CP864 dos
# CP865 dos
# CP866 freebsd netbsd openbsd darwin dos
# CP869 dos
# CP874 woe32 dos
# CP922 aix
# CP932 aix cygwin woe32 dos
# CP943 aix
# CP949 osf darwin woe32 dos
# CP950 woe32 dos
# CP1046 aix
# CP1124 aix
# CP1125 dos
# CP1129 aix
# CP1131 darwin
# CP1250 woe32
# CP1251 glibc solaris netbsd openbsd darwin cygwin woe32
# CP1252 aix woe32
# CP1253 woe32
# CP1254 woe32
# CP1255 glibc woe32
# CP1256 woe32
# CP1257 woe32
# GB2312 Y glibc aix hpux irix solaris freebsd netbsd darwin
# EUC-JP Y glibc aix hpux irix osf solaris freebsd netbsd darwin
# EUC-KR Y glibc aix hpux irix osf solaris freebsd netbsd darwin cygwin
# EUC-TW glibc aix hpux irix osf solaris netbsd
# BIG5 Y glibc aix hpux osf solaris freebsd netbsd darwin cygwin
# BIG5-HKSCS glibc solaris darwin
# GBK glibc aix osf solaris darwin cygwin woe32 dos
# GB18030 glibc solaris netbsd darwin
# SHIFT_JIS Y hpux osf solaris freebsd netbsd darwin
# JOHAB glibc solaris woe32
# TIS-620 glibc aix hpux osf solaris cygwin
# VISCII Y glibc
# TCVN5712-1 glibc
# ARMSCII-8 glibc darwin
# GEORGIAN-PS glibc cygwin
# PT154 glibc
# HP-ROMAN8 hpux
# HP-ARABIC8 hpux
# HP-GREEK8 hpux
# HP-HEBREW8 hpux
# HP-TURKISH8 hpux
# HP-KANA8 hpux
# DEC-KANJI osf
# DEC-HANYU osf
# UTF-8 Y glibc aix hpux osf solaris netbsd darwin cygwin
#
# Note: Names which are not marked as being a MIME name should not be used in
# Internet protocols for information interchange (mail, news, etc.).
#
# Note: ASCII and ANSI_X3.4-1968 are synonymous canonical names. Applications
# must understand both names and treat them as equivalent.
#
# The first argument passed to this file is the canonical host specification,
# CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM
# or
# CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM
host="$1"
os=`echo "$host" | sed -e 's/^[^-]*-[^-]*-\(.*\)$/\1/'`
echo "# This file contains a table of character encoding aliases,"
echo "# suitable for operating system '${os}'."
echo "# It was automatically generated from config.charset."
# List of references, updated during installation:
echo "# Packages using this file: "
case "$os" in
linux-gnulibc1*)
# Linux libc5 doesn't have nl_langinfo(CODESET); therefore
# localcharset.c falls back to using the full locale name
# from the environment variables.
echo "C ASCII"
echo "POSIX ASCII"
for l in af af_ZA ca ca_ES da da_DK de de_AT de_BE de_CH de_DE de_LU \
en en_AU en_BW en_CA en_DK en_GB en_IE en_NZ en_US en_ZA \
en_ZW es es_AR es_BO es_CL es_CO es_DO es_EC es_ES es_GT \
es_HN es_MX es_PA es_PE es_PY es_SV es_US es_UY es_VE et \
et_EE eu eu_ES fi fi_FI fo fo_FO fr fr_BE fr_CA fr_CH fr_FR \
fr_LU ga ga_IE gl gl_ES id id_ID in in_ID is is_IS it it_CH \
it_IT kl kl_GL nl nl_BE nl_NL no no_NO pt pt_BR pt_PT sv \
sv_FI sv_SE; do
echo "$l ISO-8859-1"
echo "$l.iso-8859-1 ISO-8859-1"
echo "$l.iso-8859-15 ISO-8859-15"
echo "$l.iso-8859-15@euro ISO-8859-15"
echo "$l@euro ISO-8859-15"
echo "$l.cp-437 CP437"
echo "$l.cp-850 CP850"
echo "$l.cp-1252 CP1252"
echo "$l.cp-1252@euro CP1252"
#echo "$l.atari-st ATARI-ST" # not a commonly used encoding
echo "$l.utf-8 UTF-8"
echo "$l.utf-8@euro UTF-8"
done
for l in cs cs_CZ hr hr_HR hu hu_HU pl pl_PL ro ro_RO sk sk_SK sl \
sl_SI sr sr_CS sr_YU; do
echo "$l ISO-8859-2"
echo "$l.iso-8859-2 ISO-8859-2"
echo "$l.cp-852 CP852"
echo "$l.cp-1250 CP1250"
echo "$l.utf-8 UTF-8"
done
for l in mk mk_MK ru ru_RU; do
echo "$l ISO-8859-5"
echo "$l.iso-8859-5 ISO-8859-5"
echo "$l.koi8-r KOI8-R"
echo "$l.cp-866 CP866"
echo "$l.cp-1251 CP1251"
echo "$l.utf-8 UTF-8"
done
for l in ar ar_SA; do
echo "$l ISO-8859-6"
echo "$l.iso-8859-6 ISO-8859-6"
echo "$l.cp-864 CP864"
#echo "$l.cp-868 CP868" # not a commonly used encoding
echo "$l.cp-1256 CP1256"
echo "$l.utf-8 UTF-8"
done
for l in el el_GR gr gr_GR; do
echo "$l ISO-8859-7"
echo "$l.iso-8859-7 ISO-8859-7"
echo "$l.cp-869 CP869"
echo "$l.cp-1253 CP1253"
echo "$l.cp-1253@euro CP1253"
echo "$l.utf-8 UTF-8"
echo "$l.utf-8@euro UTF-8"
done
for l in he he_IL iw iw_IL; do
echo "$l ISO-8859-8"
echo "$l.iso-8859-8 ISO-8859-8"
echo "$l.cp-862 CP862"
echo "$l.cp-1255 CP1255"
echo "$l.utf-8 UTF-8"
done
for l in tr tr_TR; do
echo "$l ISO-8859-9"
echo "$l.iso-8859-9 ISO-8859-9"
echo "$l.cp-857 CP857"
echo "$l.cp-1254 CP1254"
echo "$l.utf-8 UTF-8"
done
for l in lt lt_LT lv lv_LV; do
#echo "$l BALTIC" # not a commonly used encoding, wrong encoding name
echo "$l ISO-8859-13"
done
for l in ru_UA uk uk_UA; do
echo "$l KOI8-U"
done
for l in zh zh_CN; do
#echo "$l GB_2312-80" # not a commonly used encoding, wrong encoding name
echo "$l GB2312"
done
for l in ja ja_JP ja_JP.EUC; do
echo "$l EUC-JP"
done
for l in ko ko_KR; do
echo "$l EUC-KR"
done
for l in th th_TH; do
echo "$l TIS-620"
done
for l in fa fa_IR; do
#echo "$l ISIRI-3342" # a broken encoding
echo "$l.utf-8 UTF-8"
done
;;
linux* | *-gnu*)
# With glibc-2.1 or newer, we don't need any canonicalization,
# because glibc has iconv and both glibc and libiconv support all
# GNU canonical names directly. Therefore, the Makefile does not
# need to install the alias file at all.
# The following applies only to glibc-2.0.x and older libcs.
echo "ISO_646.IRV:1983 ASCII"
;;
aix*)
echo "ISO8859-1 ISO-8859-1"
echo "ISO8859-2 ISO-8859-2"
echo "ISO8859-5 ISO-8859-5"
echo "ISO8859-6 ISO-8859-6"
echo "ISO8859-7 ISO-8859-7"
echo "ISO8859-8 ISO-8859-8"
echo "ISO8859-9 ISO-8859-9"
echo "ISO8859-15 ISO-8859-15"
echo "IBM-850 CP850"
echo "IBM-856 CP856"
echo "IBM-921 ISO-8859-13"
echo "IBM-922 CP922"
echo "IBM-932 CP932"
echo "IBM-943 CP943"
echo "IBM-1046 CP1046"
echo "IBM-1124 CP1124"
echo "IBM-1129 CP1129"
echo "IBM-1252 CP1252"
echo "IBM-eucCN GB2312"
echo "IBM-eucJP EUC-JP"
echo "IBM-eucKR EUC-KR"
echo "IBM-eucTW EUC-TW"
echo "big5 BIG5"
echo "GBK GBK"
echo "TIS-620 TIS-620"
echo "UTF-8 UTF-8"
;;
hpux*)
echo "iso88591 ISO-8859-1"
echo "iso88592 ISO-8859-2"
echo "iso88595 ISO-8859-5"
echo "iso88596 ISO-8859-6"
echo "iso88597 ISO-8859-7"
echo "iso88598 ISO-8859-8"
echo "iso88599 ISO-8859-9"
echo "iso885915 ISO-8859-15"
echo "roman8 HP-ROMAN8"
echo "arabic8 HP-ARABIC8"
echo "greek8 HP-GREEK8"
echo "hebrew8 HP-HEBREW8"
echo "turkish8 HP-TURKISH8"
echo "kana8 HP-KANA8"
echo "tis620 TIS-620"
echo "big5 BIG5"
echo "eucJP EUC-JP"
echo "eucKR EUC-KR"
echo "eucTW EUC-TW"
echo "hp15CN GB2312"
#echo "ccdc ?" # what is this?
echo "SJIS SHIFT_JIS"
echo "utf8 UTF-8"
;;
irix*)
echo "ISO8859-1 ISO-8859-1"
echo "ISO8859-2 ISO-8859-2"
echo "ISO8859-5 ISO-8859-5"
echo "ISO8859-7 ISO-8859-7"
echo "ISO8859-9 ISO-8859-9"
echo "eucCN GB2312"
echo "eucJP EUC-JP"
echo "eucKR EUC-KR"
echo "eucTW EUC-TW"
;;
osf*)
echo "ISO8859-1 ISO-8859-1"
echo "ISO8859-2 ISO-8859-2"
echo "ISO8859-4 ISO-8859-4"
echo "ISO8859-5 ISO-8859-5"
echo "ISO8859-7 ISO-8859-7"
echo "ISO8859-8 ISO-8859-8"
echo "ISO8859-9 ISO-8859-9"
echo "ISO8859-15 ISO-8859-15"
echo "cp850 CP850"
echo "big5 BIG5"
echo "dechanyu DEC-HANYU"
echo "dechanzi GB2312"
echo "deckanji DEC-KANJI"
echo "deckorean EUC-KR"
echo "eucJP EUC-JP"
echo "eucKR EUC-KR"
echo "eucTW EUC-TW"
echo "GBK GBK"
echo "KSC5601 CP949"
echo "sdeckanji EUC-JP"
echo "SJIS SHIFT_JIS"
echo "TACTIS TIS-620"
echo "UTF-8 UTF-8"
;;
solaris*)
echo "646 ASCII"
echo "ISO8859-1 ISO-8859-1"
echo "ISO8859-2 ISO-8859-2"
echo "ISO8859-3 ISO-8859-3"
echo "ISO8859-4 ISO-8859-4"
echo "ISO8859-5 ISO-8859-5"
echo "ISO8859-6 ISO-8859-6"
echo "ISO8859-7 ISO-8859-7"
echo "ISO8859-8 ISO-8859-8"
echo "ISO8859-9 ISO-8859-9"
echo "ISO8859-15 ISO-8859-15"
echo "koi8-r KOI8-R"
echo "ansi-1251 CP1251"
echo "BIG5 BIG5"
echo "Big5-HKSCS BIG5-HKSCS"
echo "gb2312 GB2312"
echo "GBK GBK"
echo "GB18030 GB18030"
echo "cns11643 EUC-TW"
echo "5601 EUC-KR"
echo "ko_KR.johap92 JOHAB"
echo "eucJP EUC-JP"
echo "PCK SHIFT_JIS"
echo "TIS620.2533 TIS-620"
#echo "sun_eu_greek ?" # what is this?
echo "UTF-8 UTF-8"
;;
freebsd* | os2*)
# FreeBSD 4.2 doesn't have nl_langinfo(CODESET); therefore
# localcharset.c falls back to using the full locale name
# from the environment variables.
# Likewise for OS/2. OS/2 has XFree86 just like FreeBSD. Just
# reuse FreeBSD's locale data for OS/2.
echo "C ASCII"
echo "US-ASCII ASCII"
for l in la_LN lt_LN; do
echo "$l.ASCII ASCII"
done
for l in da_DK de_AT de_CH de_DE en_AU en_CA en_GB en_US es_ES \
fi_FI fr_BE fr_CA fr_CH fr_FR is_IS it_CH it_IT la_LN \
lt_LN nl_BE nl_NL no_NO pt_PT sv_SE; do
echo "$l.ISO_8859-1 ISO-8859-1"
echo "$l.DIS_8859-15 ISO-8859-15"
done
for l in cs_CZ hr_HR hu_HU la_LN lt_LN pl_PL sl_SI; do
echo "$l.ISO_8859-2 ISO-8859-2"
done
for l in la_LN lt_LT; do
echo "$l.ISO_8859-4 ISO-8859-4"
done
for l in ru_RU ru_SU; do
echo "$l.KOI8-R KOI8-R"
echo "$l.ISO_8859-5 ISO-8859-5"
echo "$l.CP866 CP866"
done
echo "uk_UA.KOI8-U KOI8-U"
echo "zh_TW.BIG5 BIG5"
echo "zh_TW.Big5 BIG5"
echo "zh_CN.EUC GB2312"
echo "ja_JP.EUC EUC-JP"
echo "ja_JP.SJIS SHIFT_JIS"
echo "ja_JP.Shift_JIS SHIFT_JIS"
echo "ko_KR.EUC EUC-KR"
;;
netbsd*)
echo "646 ASCII"
echo "ISO8859-1 ISO-8859-1"
echo "ISO8859-2 ISO-8859-2"
echo "ISO8859-4 ISO-8859-4"
echo "ISO8859-5 ISO-8859-5"
echo "ISO8859-7 ISO-8859-7"
echo "ISO8859-13 ISO-8859-13"
echo "ISO8859-15 ISO-8859-15"
echo "eucCN GB2312"
echo "eucJP EUC-JP"
echo "eucKR EUC-KR"
echo "eucTW EUC-TW"
echo "BIG5 BIG5"
echo "SJIS SHIFT_JIS"
;;
openbsd*)
echo "646 ASCII"
echo "ISO8859-1 ISO-8859-1"
echo "ISO8859-2 ISO-8859-2"
echo "ISO8859-4 ISO-8859-4"
echo "ISO8859-5 ISO-8859-5"
echo "ISO8859-7 ISO-8859-7"
echo "ISO8859-13 ISO-8859-13"
echo "ISO8859-15 ISO-8859-15"
;;
darwin[56]*)
# Darwin 6.8 doesn't have nl_langinfo(CODESET); therefore
# localcharset.c falls back to using the full locale name
# from the environment variables.
echo "C ASCII"
for l in en_AU en_CA en_GB en_US la_LN; do
echo "$l.US-ASCII ASCII"
done
for l in da_DK de_AT de_CH de_DE en_AU en_CA en_GB en_US es_ES \
fi_FI fr_BE fr_CA fr_CH fr_FR is_IS it_CH it_IT nl_BE \
nl_NL no_NO pt_PT sv_SE; do
echo "$l ISO-8859-1"
echo "$l.ISO8859-1 ISO-8859-1"
echo "$l.ISO8859-15 ISO-8859-15"
done
for l in la_LN; do
echo "$l.ISO8859-1 ISO-8859-1"
echo "$l.ISO8859-15 ISO-8859-15"
done
for l in cs_CZ hr_HR hu_HU la_LN pl_PL sl_SI; do
echo "$l.ISO8859-2 ISO-8859-2"
done
for l in la_LN lt_LT; do
echo "$l.ISO8859-4 ISO-8859-4"
done
for l in ru_RU; do
echo "$l.KOI8-R KOI8-R"
echo "$l.ISO8859-5 ISO-8859-5"
echo "$l.CP866 CP866"
done
for l in bg_BG; do
echo "$l.CP1251 CP1251"
done
echo "uk_UA.KOI8-U KOI8-U"
echo "zh_TW.BIG5 BIG5"
echo "zh_TW.Big5 BIG5"
echo "zh_CN.EUC GB2312"
echo "ja_JP.EUC EUC-JP"
echo "ja_JP.SJIS SHIFT_JIS"
echo "ko_KR.EUC EUC-KR"
;;
darwin*)
# Darwin 7.5 has nl_langinfo(CODESET), but sometimes its value is
# useless:
# - It returns the empty string when LANG is set to a locale of the
# form ll_CC, although ll_CC/LC_CTYPE is a symlink to an UTF-8
# LC_CTYPE file.
# - The environment variables LANG, LC_CTYPE, LC_ALL are not set by
# the system; nl_langinfo(CODESET) returns "US-ASCII" in this case.
# - The documentation says:
# "... all code that calls BSD system routines should ensure
# that the const *char parameters of these routines are in UTF-8
# encoding. All BSD system functions expect their string
# parameters to be in UTF-8 encoding and nothing else."
# It also says
# "An additional caveat is that string parameters for files,
# paths, and other file-system entities must be in canonical
# UTF-8. In a canonical UTF-8 Unicode string, all decomposable
# characters are decomposed ..."
# but this is not true: You can pass non-decomposed UTF-8 strings
# to file system functions, and it is the OS which will convert
# them to decomposed UTF-8 before accessing the file system.
# - The Apple Terminal application displays UTF-8 by default.
# - However, other applications are free to use different encodings:
# - xterm uses ISO-8859-1 by default.
# - TextEdit uses MacRoman by default.
# We prefer UTF-8 over decomposed UTF-8-MAC because one should
# minimize the use of decomposed Unicode. Unfortunately, through the
# Darwin file system, decomposed UTF-8 strings are leaked into user
# space nevertheless.
# Then there are also the locales with encodings other than US-ASCII
# and UTF-8. These locales can be occasionally useful to users (e.g.
# when grepping through ISO-8859-1 encoded text files), when all their
# file names are in US-ASCII.
echo "ISO8859-1 ISO-8859-1"
echo "ISO8859-2 ISO-8859-2"
echo "ISO8859-4 ISO-8859-4"
echo "ISO8859-5 ISO-8859-5"
echo "ISO8859-7 ISO-8859-7"
echo "ISO8859-9 ISO-8859-9"
echo "ISO8859-13 ISO-8859-13"
echo "ISO8859-15 ISO-8859-15"
echo "KOI8-R KOI8-R"
echo "KOI8-U KOI8-U"
echo "CP866 CP866"
echo "CP949 CP949"
echo "CP1131 CP1131"
echo "CP1251 CP1251"
echo "eucCN GB2312"
echo "GB2312 GB2312"
echo "eucJP EUC-JP"
echo "eucKR EUC-KR"
echo "Big5 BIG5"
echo "Big5HKSCS BIG5-HKSCS"
echo "GBK GBK"
echo "GB18030 GB18030"
echo "SJIS SHIFT_JIS"
echo "ARMSCII-8 ARMSCII-8"
echo "PT154 PT154"
#echo "ISCII-DEV ?"
echo "* UTF-8"
;;
beos* | haiku*)
# BeOS and Haiku have a single locale, and it has UTF-8 encoding.
echo "* UTF-8"
;;
msdosdjgpp*)
# DJGPP 2.03 doesn't have nl_langinfo(CODESET); therefore
# localcharset.c falls back to using the full locale name
# from the environment variables.
echo "#"
echo "# The encodings given here may not all be correct."
echo "# If you find that the encoding given for your language and"
echo "# country is not the one your DOS machine actually uses, just"
echo "# correct it in this file, and send a mail to"
echo "# Juan Manuel Guerrero <juan.guerrero@gmx.de>"
echo "# and Bruno Haible <bruno@clisp.org>."
echo "#"
echo "C ASCII"
# ISO-8859-1 languages
echo "ca CP850"
echo "ca_ES CP850"
echo "da CP865" # not CP850 ??
echo "da_DK CP865" # not CP850 ??
echo "de CP850"
echo "de_AT CP850"
echo "de_CH CP850"
echo "de_DE CP850"
echo "en CP850"
echo "en_AU CP850" # not CP437 ??
echo "en_CA CP850"
echo "en_GB CP850"
echo "en_NZ CP437"
echo "en_US CP437"
echo "en_ZA CP850" # not CP437 ??
echo "es CP850"
echo "es_AR CP850"
echo "es_BO CP850"
echo "es_CL CP850"
echo "es_CO CP850"
echo "es_CR CP850"
echo "es_CU CP850"
echo "es_DO CP850"
echo "es_EC CP850"
echo "es_ES CP850"
echo "es_GT CP850"
echo "es_HN CP850"
echo "es_MX CP850"
echo "es_NI CP850"
echo "es_PA CP850"
echo "es_PY CP850"
echo "es_PE CP850"
echo "es_SV CP850"
echo "es_UY CP850"
echo "es_VE CP850"
echo "et CP850"
echo "et_EE CP850"
echo "eu CP850"
echo "eu_ES CP850"
echo "fi CP850"
echo "fi_FI CP850"
echo "fr CP850"
echo "fr_BE CP850"
echo "fr_CA CP850"
echo "fr_CH CP850"
echo "fr_FR CP850"
echo "ga CP850"
echo "ga_IE CP850"
echo "gd CP850"
echo "gd_GB CP850"
echo "gl CP850"
echo "gl_ES CP850"
echo "id CP850" # not CP437 ??
echo "id_ID CP850" # not CP437 ??
echo "is CP861" # not CP850 ??
echo "is_IS CP861" # not CP850 ??
echo "it CP850"
echo "it_CH CP850"
echo "it_IT CP850"
echo "lt CP775"
echo "lt_LT CP775"
echo "lv CP775"
echo "lv_LV CP775"
echo "nb CP865" # not CP850 ??
echo "nb_NO CP865" # not CP850 ??
echo "nl CP850"
echo "nl_BE CP850"
echo "nl_NL CP850"
echo "nn CP865" # not CP850 ??
echo "nn_NO CP865" # not CP850 ??
echo "no CP865" # not CP850 ??
echo "no_NO CP865" # not CP850 ??
echo "pt CP850"
echo "pt_BR CP850"
echo "pt_PT CP850"
echo "sv CP850"
echo "sv_SE CP850"
# ISO-8859-2 languages
echo "cs CP852"
echo "cs_CZ CP852"
echo "hr CP852"
echo "hr_HR CP852"
echo "hu CP852"
echo "hu_HU CP852"
echo "pl CP852"
echo "pl_PL CP852"
echo "ro CP852"
echo "ro_RO CP852"
echo "sk CP852"
echo "sk_SK CP852"
echo "sl CP852"
echo "sl_SI CP852"
echo "sq CP852"
echo "sq_AL CP852"
echo "sr CP852" # CP852 or CP866 or CP855 ??
echo "sr_CS CP852" # CP852 or CP866 or CP855 ??
echo "sr_YU CP852" # CP852 or CP866 or CP855 ??
# ISO-8859-3 languages
echo "mt CP850"
echo "mt_MT CP850"
# ISO-8859-5 languages
echo "be CP866"
echo "be_BE CP866"
echo "bg CP866" # not CP855 ??
echo "bg_BG CP866" # not CP855 ??
echo "mk CP866" # not CP855 ??
echo "mk_MK CP866" # not CP855 ??
echo "ru CP866"
echo "ru_RU CP866"
echo "uk CP1125"
echo "uk_UA CP1125"
# ISO-8859-6 languages
echo "ar CP864"
echo "ar_AE CP864"
echo "ar_DZ CP864"
echo "ar_EG CP864"
echo "ar_IQ CP864"
echo "ar_IR CP864"
echo "ar_JO CP864"
echo "ar_KW CP864"
echo "ar_MA CP864"
echo "ar_OM CP864"
echo "ar_QA CP864"
echo "ar_SA CP864"
echo "ar_SY CP864"
# ISO-8859-7 languages
echo "el CP869"
echo "el_GR CP869"
# ISO-8859-8 languages
echo "he CP862"
echo "he_IL CP862"
# ISO-8859-9 languages
echo "tr CP857"
echo "tr_TR CP857"
# Japanese
echo "ja CP932"
echo "ja_JP CP932"
# Chinese
echo "zh_CN GBK"
echo "zh_TW CP950" # not CP938 ??
# Korean
echo "kr CP949" # not CP934 ??
echo "kr_KR CP949" # not CP934 ??
# Thai
echo "th CP874"
echo "th_TH CP874"
# Other
echo "eo CP850"
echo "eo_EO CP850"
;;
esac

18
gl/dirname-lgpl.c
View file

@ -1,20 +1,20 @@
/* dirname.c -- return all but the last element in a file name
Copyright (C) 1990, 1998, 2000-2001, 2003-2006, 2009-2013 Free Software
Copyright (C) 1990, 1998, 2000-2001, 2003-2006, 2009-2023 Free Software
Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
GNU Lesser General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#include <config.h>

6
gl/dirname.c
View file

@ -1,11 +1,11 @@
/* dirname.c -- return all but the last element in a file name
Copyright (C) 1990, 1998, 2000-2001, 2003-2006, 2009-2013 Free Software
Copyright (C) 1990, 1998, 2000-2001, 2003-2006, 2009-2023 Free Software
Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
@ -14,7 +14,7 @@
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#include <config.h>

55
gl/dirname.h
View file

@ -1,46 +1,53 @@
/* Take file names apart into directory and base names.
/* Take file names apart into directory and base names.
Copyright (C) 1998, 2001, 2003-2006, 2009-2013 Free Software Foundation,
Inc.
Copyright (C) 1998, 2001, 2003-2006, 2009-2023 Free Software Foundation,
Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#ifndef DIRNAME_H_
# define DIRNAME_H_ 1
# include <stdbool.h>
# include <stddef.h>
# include "dosname.h"
# include <stdlib.h>
# include "filename.h"
# include "basename-lgpl.h"
# ifndef DIRECTORY_SEPARATOR
# define DIRECTORY_SEPARATOR '/'
# endif
# ifndef DOUBLE_SLASH_IS_DISTINCT_ROOT
# define DOUBLE_SLASH_IS_DISTINCT_ROOT 0
# endif
#ifdef __cplusplus
extern "C" {
#endif
# if GNULIB_DIRNAME
char *base_name (char const *file);
char *dir_name (char const *file);
char *base_name (char const *file)
_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
_GL_ATTRIBUTE_RETURNS_NONNULL;
char *dir_name (char const *file)
_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
_GL_ATTRIBUTE_RETURNS_NONNULL;
# endif
char *mdir_name (char const *file);
size_t base_len (char const *file) _GL_ATTRIBUTE_PURE;
char *mdir_name (char const *file)
_GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE;
size_t dir_len (char const *file) _GL_ATTRIBUTE_PURE;
char *last_component (char const *file) _GL_ATTRIBUTE_PURE;
bool strip_trailing_slashes (char *file);
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* not DIRNAME_H_ */

53
gl/dosname.h
View file

@ -1,53 +0,0 @@
/* File names on MS-DOS/Windows systems.
Copyright (C) 2000-2001, 2004-2006, 2009-2013 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
From Paul Eggert and Jim Meyering. */
#ifndef _DOSNAME_H
#define _DOSNAME_H
#if (defined _WIN32 || defined __WIN32__ || \
defined __MSDOS__ || defined __CYGWIN__ || \
defined __EMX__ || defined __DJGPP__)
/* This internal macro assumes ASCII, but all hosts that support drive
letters use ASCII. */
# define _IS_DRIVE_LETTER(C) (((unsigned int) (C) | ('a' - 'A')) - 'a' \
<= 'z' - 'a')
# define FILE_SYSTEM_PREFIX_LEN(Filename) \
(_IS_DRIVE_LETTER ((Filename)[0]) && (Filename)[1] == ':' ? 2 : 0)
# ifndef __CYGWIN__
# define FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE 1
# endif
# define ISSLASH(C) ((C) == '/' || (C) == '\\')
#else
# define FILE_SYSTEM_PREFIX_LEN(Filename) 0
# define ISSLASH(C) ((C) == '/')
#endif
#ifndef FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE
# define FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE 0
#endif
#if FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE
# define IS_ABSOLUTE_FILE_NAME(F) ISSLASH ((F)[FILE_SYSTEM_PREFIX_LEN (F)])
# else
# define IS_ABSOLUTE_FILE_NAME(F) \
(ISSLASH ((F)[0]) || FILE_SYSTEM_PREFIX_LEN (F) != 0)
#endif
#define IS_RELATIVE_FILE_NAME(F) (! IS_ABSOLUTE_FILE_NAME (F))
#endif /* DOSNAME_H_ */

189
gl/dup2.c Normal file
View file

@ -0,0 +1,189 @@
/* Duplicate an open file descriptor to a specified file descriptor.
Copyright (C) 1999, 2004-2007, 2009-2023 Free Software Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* written by Paul Eggert */
#include <config.h>
/* Specification. */
#include <unistd.h>
#include <errno.h>
#include <fcntl.h>
#undef dup2
#if defined _WIN32 && ! defined __CYGWIN__
/* Get declarations of the native Windows API functions. */
# define WIN32_LEAN_AND_MEAN
# include <windows.h>
# if HAVE_MSVC_INVALID_PARAMETER_HANDLER
# include "msvc-inval.h"
# endif
/* Get _get_osfhandle. */
# if GNULIB_MSVC_NOTHROW
# include "msvc-nothrow.h"
# else
# include <io.h>
# endif
# if HAVE_MSVC_INVALID_PARAMETER_HANDLER
static int
dup2_nothrow (int fd, int desired_fd)
{
int result;
TRY_MSVC_INVAL
{
result = _dup2 (fd, desired_fd);
}
CATCH_MSVC_INVAL
{
errno = EBADF;
result = -1;
}
DONE_MSVC_INVAL;
return result;
}
# else
# define dup2_nothrow _dup2
# endif
static int
ms_windows_dup2 (int fd, int desired_fd)
{
int result;
/* If fd is closed, mingw hangs on dup2 (fd, fd). If fd is open,
dup2 (fd, fd) returns 0, but all further attempts to use fd in
future dup2 calls will hang. */
if (fd == desired_fd)
{
if ((HANDLE) _get_osfhandle (fd) == INVALID_HANDLE_VALUE)
{
errno = EBADF;
return -1;
}
return fd;
}
/* Wine 1.0.1 return 0 when desired_fd is negative but not -1:
https://bugs.winehq.org/show_bug.cgi?id=21289 */
if (desired_fd < 0)
{
errno = EBADF;
return -1;
}
result = dup2_nothrow (fd, desired_fd);
if (result == 0)
result = desired_fd;
return result;
}
# define dup2 ms_windows_dup2
#elif defined __KLIBC__
# include <InnoTekLIBC/backend.h>
static int
klibc_dup2dirfd (int fd, int desired_fd)
{
int tempfd;
int dupfd;
tempfd = open ("NUL", O_RDONLY);
if (tempfd == -1)
return -1;
if (tempfd == desired_fd)
{
close (tempfd);
char path[_MAX_PATH];
if (__libc_Back_ioFHToPath (fd, path, sizeof (path)))
return -1;
return open(path, O_RDONLY);
}
dupfd = klibc_dup2dirfd (fd, desired_fd);
close (tempfd);
return dupfd;
}
static int
klibc_dup2 (int fd, int desired_fd)
{
int dupfd;
struct stat sbuf;
dupfd = dup2 (fd, desired_fd);
if (dupfd == -1 && errno == ENOTSUP \
&& !fstat (fd, &sbuf) && S_ISDIR (sbuf.st_mode))
{
close (desired_fd);
return klibc_dup2dirfd (fd, desired_fd);
}
return dupfd;
}
# define dup2 klibc_dup2
#endif
int
rpl_dup2 (int fd, int desired_fd)
{
int result;
#ifdef F_GETFL
/* On Linux kernels 2.6.26-2.6.29, dup2 (fd, fd) returns -EBADF.
On Cygwin 1.5.x, dup2 (1, 1) returns 0.
On Cygwin 1.7.17, dup2 (1, -1) dumps core.
On Cygwin 1.7.25, dup2 (1, 256) can dump core.
On Haiku, dup2 (fd, fd) mistakenly clears FD_CLOEXEC. */
# if HAVE_SETDTABLESIZE
setdtablesize (desired_fd + 1);
# endif
if (desired_fd < 0)
fd = desired_fd;
if (fd == desired_fd)
return fcntl (fd, F_GETFL) == -1 ? -1 : fd;
#endif
result = dup2 (fd, desired_fd);
/* Correct an errno value on FreeBSD 6.1 and Cygwin 1.5.x. */
if (result == -1 && errno == EMFILE)
errno = EBADF;
#if REPLACE_FCHDIR
if (fd != desired_fd && result != -1)
result = _gl_register_dup (fd, result);
#endif
return result;
}

284
gl/dynarray.h Normal file
View file

@ -0,0 +1,284 @@
/* Type-safe arrays which grow dynamically.
Copyright 2021-2023 Free Software Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by Paul Eggert and Bruno Haible, 2021. */
#ifndef _GL_DYNARRAY_H
#define _GL_DYNARRAY_H
/* Before including this file, you need to define:
DYNARRAY_STRUCT
The struct tag of dynamic array to be defined.
DYNARRAY_ELEMENT
The type name of the element type. Elements are copied
as if by memcpy, and can change address as the dynamic
array grows.
DYNARRAY_PREFIX
The prefix of the functions which are defined.
The following parameters are optional:
DYNARRAY_ELEMENT_FREE
DYNARRAY_ELEMENT_FREE (E) is evaluated to deallocate the
contents of elements. E is of type DYNARRAY_ELEMENT *.
DYNARRAY_ELEMENT_INIT
DYNARRAY_ELEMENT_INIT (E) is evaluated to initialize a new
element. E is of type DYNARRAY_ELEMENT *.
If DYNARRAY_ELEMENT_FREE but not DYNARRAY_ELEMENT_INIT is
defined, new elements are automatically zero-initialized.
Otherwise, new elements have undefined contents.
DYNARRAY_INITIAL_SIZE
The size of the statically allocated array (default:
at least 2, more elements if they fit into 128 bytes).
Must be a preprocessor constant. If DYNARRAY_INITIAL_SIZE is 0,
there is no statically allocated array at, and all non-empty
arrays are heap-allocated.
DYNARRAY_FINAL_TYPE
The name of the type which holds the final array. If not
defined, is PREFIX##finalize not provided. DYNARRAY_FINAL_TYPE
must be a struct type, with members of type DYNARRAY_ELEMENT and
size_t at the start (in this order).
These macros are undefined after this header file has been
included.
The following types are provided (their members are private to the
dynarray implementation):
struct DYNARRAY_STRUCT
The following functions are provided:
*/
/* Initialize a dynamic array object. This must be called before any
use of the object. */
#if 0
static void
DYNARRAY_PREFIX##init (struct DYNARRAY_STRUCT *list);
#endif
/* Deallocate the dynamic array and its elements. */
#if 0
static void
DYNARRAY_PREFIX##free (struct DYNARRAY_STRUCT *list);
#endif
/* Return true if the dynamic array is in an error state. */
#if 0
static bool
DYNARRAY_PREFIX##has_failed (const struct DYNARRAY_STRUCT *list);
#endif
/* Mark the dynamic array as failed. All elements are deallocated as
a side effect. */
#if 0
static void
DYNARRAY_PREFIX##mark_failed (struct DYNARRAY_STRUCT *list);
#endif
/* Return the number of elements which have been added to the dynamic
array. */
#if 0
static size_t
DYNARRAY_PREFIX##size (const struct DYNARRAY_STRUCT *list);
#endif
/* Return a pointer to the first array element, if any. For a
zero-length array, the pointer can be NULL even though the dynamic
array has not entered the failure state. */
#if 0
static DYNARRAY_ELEMENT *
DYNARRAY_PREFIX##begin (const struct DYNARRAY_STRUCT *list);
#endif
/* Return a pointer one element past the last array element. For a
zero-length array, the pointer can be NULL even though the dynamic
array has not entered the failure state. */
#if 0
static DYNARRAY_ELEMENT *
DYNARRAY_PREFIX##end (const struct DYNARRAY_STRUCT *list);
#endif
/* Return a pointer to the array element at INDEX. Terminate the
process if INDEX is out of bounds. */
#if 0
static DYNARRAY_ELEMENT *
DYNARRAY_PREFIX##at (struct DYNARRAY_STRUCT *list, size_t index);
#endif
/* Add ITEM at the end of the array, enlarging it by one element.
Mark *LIST as failed if the dynamic array allocation size cannot be
increased. */
#if 0
static void
DYNARRAY_PREFIX##add (struct DYNARRAY_STRUCT *list,
DYNARRAY_ELEMENT item);
#endif
/* Allocate a place for a new element in *LIST and return a pointer to
it. The pointer can be NULL if the dynamic array cannot be
enlarged due to a memory allocation failure. */
#if 0
static DYNARRAY_ELEMENT *
DYNARRAY_PREFIX##emplace (struct DYNARRAY_STRUCT *list);
#endif
/* Change the size of *LIST to SIZE. If SIZE is larger than the
existing size, new elements are added (which can be initialized).
Otherwise, the list is truncated, and elements are freed. Return
false on memory allocation failure (and mark *LIST as failed). */
#if 0
static bool
DYNARRAY_PREFIX##resize (struct DYNARRAY_STRUCT *list, size_t size);
#endif
/* Remove the last element of LIST if it is present. */
#if 0
static void
DYNARRAY_PREFIX##remove_last (struct DYNARRAY_STRUCT *list);
#endif
/* Remove all elements from the list. The elements are freed, but the
list itself is not. */
#if 0
static void
DYNARRAY_PREFIX##clear (struct DYNARRAY_STRUCT *list);
#endif
#if defined DYNARRAY_FINAL_TYPE
/* Transfer the dynamic array to a permanent location at *RESULT.
Returns true on success on false on allocation failure. In either
case, *LIST is re-initialized and can be reused. A NULL pointer is
stored in *RESULT if LIST refers to an empty list. On success, the
pointer in *RESULT is heap-allocated and must be deallocated using
free. */
#if 0
static bool
DYNARRAY_PREFIX##finalize (struct DYNARRAY_STRUCT *list,
DYNARRAY_FINAL_TYPE *result);
#endif
#else /* !defined DYNARRAY_FINAL_TYPE */
/* Transfer the dynamic array to a heap-allocated array and return a
pointer to it. The pointer is NULL if memory allocation fails, or
if the array is empty, so this function should be used only for
arrays which are known not be empty (usually because they always
have a sentinel at the end). If LENGTHP is not NULL, the array
length is written to *LENGTHP. *LIST is re-initialized and can be
reused. */
#if 0
static DYNARRAY_ELEMENT *
DYNARRAY_PREFIX##finalize (struct DYNARRAY_STRUCT *list,
size_t *lengthp);
#endif
#endif
/* A minimal example which provides a growing list of integers can be
defined like this:
struct int_array
{
// Pointer to result array followed by its length,
// as required by DYNARRAY_FINAL_TYPE.
int *array;
size_t length;
};
#define DYNARRAY_STRUCT dynarray_int
#define DYNARRAY_ELEMENT int
#define DYNARRAY_PREFIX dynarray_int_
#define DYNARRAY_FINAL_TYPE struct int_array
#include <malloc/dynarray-skeleton.c>
To create a three-element array with elements 1, 2, 3, use this
code:
struct dynarray_int dyn;
dynarray_int_init (&dyn);
for (int i = 1; i <= 3; ++i)
{
int *place = dynarray_int_emplace (&dyn);
assert (place != NULL);
*place = i;
}
struct int_array result;
bool ok = dynarray_int_finalize (&dyn, &result);
assert (ok);
assert (result.length == 3);
assert (result.array[0] == 1);
assert (result.array[1] == 2);
assert (result.array[2] == 3);
free (result.array);
If the elements contain resources which must be freed, define
DYNARRAY_ELEMENT_FREE appropriately, like this:
struct str_array
{
char **array;
size_t length;
};
#define DYNARRAY_STRUCT dynarray_str
#define DYNARRAY_ELEMENT char *
#define DYNARRAY_ELEMENT_FREE(ptr) free (*ptr)
#define DYNARRAY_PREFIX dynarray_str_
#define DYNARRAY_FINAL_TYPE struct str_array
#include <malloc/dynarray-skeleton.c>
*/
/* The implementation is imported from glibc. */
/* Avoid possible conflicts with symbols exported by the GNU libc. */
#define __libc_dynarray_at_failure gl_dynarray_at_failure
#define __libc_dynarray_emplace_enlarge gl_dynarray_emplace_enlarge
#define __libc_dynarray_finalize gl_dynarray_finalize
#define __libc_dynarray_resize_clear gl_dynarray_resize_clear
#define __libc_dynarray_resize gl_dynarray_resize
#if defined DYNARRAY_STRUCT || defined DYNARRAY_ELEMENT || defined DYNARRAY_PREFIX
# ifndef _GL_LIKELY
/* Rely on __builtin_expect, as provided by the module 'builtin-expect'. */
# define _GL_LIKELY(cond) __builtin_expect ((cond), 1)
# define _GL_UNLIKELY(cond) __builtin_expect ((cond), 0)
# endif
/* Define auxiliary structs and declare auxiliary functions, common to all
instantiations of dynarray. */
# include <malloc/dynarray.gl.h>
/* Define the instantiation, specified through
DYNARRAY_STRUCT
DYNARRAY_ELEMENT
DYNARRAY_PREFIX
etc. */
# include <malloc/dynarray-skeleton.gl.h>
#else
/* This file is being included from one of the malloc/dynarray_*.c files. */
# include <malloc/dynarray.h>
#endif
#endif /* _GL_DYNARRAY_H */

22
gl/errno.in.h
View file

@ -1,19 +1,19 @@
/* A POSIX-like <errno.h>.
Copyright (C) 2008-2013 Free Software Foundation, Inc.
Copyright (C) 2008-2023 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
GNU Lesser General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, see <http://www.gnu.org/licenses/>. */
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#ifndef _@GUARD_PREFIX@_ERRNO_H
@ -30,7 +30,7 @@
/* On native Windows platforms, many macros are not defined. */
# if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
# if defined _WIN32 && ! defined __CYGWIN__
/* These are the same values as defined by MSVC 10, for interoperability. */
@ -248,7 +248,7 @@
interoperability. */
# define EOWNERDEAD 58
# define ENOTRECOVERABLE 59
# elif (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
# elif defined _WIN32 && ! defined __CYGWIN__
/* We have a conflict here: pthreads-win32 defines these values
differently than MSVC 10. It's hairy to decide which one to use. */
# if defined __MINGW32__ && !defined USE_WINDOWS_THREADS

74
gl/error.c
View file

@ -1,19 +1,19 @@
/* Error handler for noninteractive utilities
Copyright (C) 1990-1998, 2000-2007, 2009-2013 Free Software Foundation, Inc.
Copyright (C) 1990-1998, 2000-2007, 2009-2023 Free Software Foundation, Inc.
This file is part of the GNU C Library.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
GNU Lesser General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by David MacKenzie <djm@gnu.ai.mit.edu>. */
@ -39,6 +39,11 @@
# include <stdint.h>
# include <wchar.h>
# define mbsrtowcs __mbsrtowcs
# define USE_UNLOCKED_IO 0
# define _GL_ATTRIBUTE_FORMAT_PRINTF_STANDARD(a, b)
# define _GL_ARG_NONNULL(a)
#else
# include "getprogname.h"
#endif
#if USE_UNLOCKED_IO
@ -72,14 +77,14 @@ extern void __error (int status, int errnum, const char *message, ...)
extern void __error_at_line (int status, int errnum, const char *file_name,
unsigned int line_number, const char *message,
...)
__attribute__ ((__format__ (__printf__, 5, 6)));;
__attribute__ ((__format__ (__printf__, 5, 6)));
# define error __error
# define error_at_line __error_at_line
# include <libio/iolibio.h>
# define fflush(s) INTUSE(_IO_fflush) (s)
# define fflush(s) _IO_fflush (s)
# undef putc
# define putc(c, fp) INTUSE(_IO_putc) (c, fp)
# define putc(c, fp) _IO_putc (c, fp)
# include <bits/libc-lock.h>
@ -88,35 +93,37 @@ extern void __error_at_line (int status, int errnum, const char *file_name,
# include <fcntl.h>
# include <unistd.h>
# if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
# if defined _WIN32 && ! defined __CYGWIN__
/* Get declarations of the native Windows API functions. */
# define WIN32_LEAN_AND_MEAN
# include <windows.h>
/* Get _get_osfhandle. */
# include "msvc-nothrow.h"
# if GNULIB_MSVC_NOTHROW
# include "msvc-nothrow.h"
# else
# include <io.h>
# endif
# endif
/* The gnulib override of fcntl is not needed in this file. */
# undef fcntl
# if !HAVE_DECL_STRERROR_R
# if !(GNULIB_STRERROR_R_POSIX || HAVE_DECL_STRERROR_R)
# ifndef HAVE_DECL_STRERROR_R
"this configure-time declaration test was not run"
# endif
# if STRERROR_R_CHAR_P
char *strerror_r ();
char *strerror_r (int errnum, char *buf, size_t buflen);
# else
int strerror_r ();
int strerror_r (int errnum, char *buf, size_t buflen);
# endif
# endif
/* The calling program should define program_name and set it to the
name of the executing program. */
extern char *program_name;
# define program_name getprogname ()
# if HAVE_STRERROR_R || defined strerror_r
# if GNULIB_STRERROR_R_POSIX || HAVE_STRERROR_R || defined strerror_r
# define __strerror_r strerror_r
# endif /* HAVE_STRERROR_R || defined strerror_r */
# endif /* GNULIB_STRERROR_R_POSIX || HAVE_STRERROR_R || defined strerror_r */
#endif /* not _LIBC */
#if !_LIBC
@ -124,7 +131,7 @@ extern char *program_name;
static int
is_open (int fd)
{
# if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
# if defined _WIN32 && ! defined __CYGWIN__
/* On native Windows: The initial state of unassigned standard file
descriptors is that they are open but point to an INVALID_HANDLE_VALUE.
There is no fcntl, and the gnulib replacement fcntl does not support
@ -169,9 +176,9 @@ print_errno_message (int errnum)
{
char const *s;
#if defined HAVE_STRERROR_R || _LIBC
#if _LIBC || GNULIB_STRERROR_R_POSIX || defined HAVE_STRERROR_R
char errbuf[1024];
# if STRERROR_R_CHAR_P || _LIBC
# if _LIBC || (!GNULIB_STRERROR_R_POSIX && STRERROR_R_CHAR_P)
s = __strerror_r (errnum, errbuf, sizeof errbuf);
# else
if (__strerror_r (errnum, errbuf, sizeof errbuf) == 0)
@ -195,13 +202,12 @@ print_errno_message (int errnum)
#endif
}
static void
static void _GL_ATTRIBUTE_FORMAT_PRINTF_STANDARD (3, 0) _GL_ARG_NONNULL ((3))
error_tail (int status, int errnum, const char *message, va_list args)
{
#if _LIBC
if (_IO_fwide (stderr, 0) > 0)
{
# define ALLOCA_LIMIT 2000
size_t len = strlen (message) + 1;
wchar_t *wmessage = NULL;
mbstate_t st;
@ -237,7 +243,7 @@ error_tail (int status, int errnum, const char *message, va_list args)
if (res != len)
break;
if (__builtin_expect (len >= SIZE_MAX / 2, 0))
if (__builtin_expect (len >= SIZE_MAX / sizeof (wchar_t) / 2, 0))
{
/* This really should not happen if everything is fine. */
res = (size_t) -1;
@ -266,7 +272,6 @@ error_tail (int status, int errnum, const char *message, va_list args)
else
#endif
vfprintf (stderr, message, args);
va_end (args);
++error_message_count;
if (errnum)
@ -316,6 +321,7 @@ error (int status, int errnum, const char *message, ...)
va_start (args, message);
error_tail (status, errnum, message, args);
va_end (args);
#ifdef _LIBC
_IO_funlockfile (stderr);
@ -342,7 +348,10 @@ error_at_line (int status, int errnum, const char *file_name,
if (old_line_number == line_number
&& (file_name == old_file_name
|| strcmp (old_file_name, file_name) == 0))
|| (old_file_name != NULL
&& file_name != NULL
&& strcmp (old_file_name, file_name) == 0)))
/* Simply return and print nothing. */
return;
@ -374,15 +383,16 @@ error_at_line (int status, int errnum, const char *file_name,
}
#if _LIBC
__fxprintf (NULL, file_name != NULL ? "%s:%d: " : " ",
__fxprintf (NULL, file_name != NULL ? "%s:%u: " : " ",
file_name, line_number);
#else
fprintf (stderr, file_name != NULL ? "%s:%d: " : " ",
fprintf (stderr, file_name != NULL ? "%s:%u: " : " ",
file_name, line_number);
#endif
va_start (args, message);
error_tail (status, errnum, message, args);
va_end (args);
#ifdef _LIBC
_IO_funlockfile (stderr);

45
gl/error.h
View file

@ -1,35 +1,26 @@
/* Declaration for error-reporting function
Copyright (C) 1995-1997, 2003, 2006, 2008-2013 Free Software Foundation,
Copyright (C) 1995-1997, 2003, 2006, 2008-2023 Free Software Foundation,
Inc.
This file is part of the GNU C Library.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
GNU Lesser General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#ifndef _ERROR_H
#define _ERROR_H 1
/* The __attribute__ feature is available in gcc versions 2.5 and later.
The __-protected variants of the attributes 'format' and 'printf' are
accepted by gcc versions 2.6.4 (effectively 2.7) and later.
We enable _GL_ATTRIBUTE_FORMAT only if these are supported too, because
gnulib and libintl do '#define printf __printf__' when they override
the 'printf' function. */
#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7)
# define _GL_ATTRIBUTE_FORMAT(spec) __attribute__ ((__format__ spec))
#else
# define _GL_ATTRIBUTE_FORMAT(spec) /* empty */
#endif
/* Get _GL_ATTRIBUTE_SPEC_PRINTF_STANDARD, _GL_ATTRIBUTE_SPEC_PRINTF_SYSTEM. */
#include <stdio.h>
#ifdef __cplusplus
extern "C" {
@ -40,11 +31,21 @@ extern "C" {
If STATUS is nonzero, terminate the program with 'exit (STATUS)'. */
extern void error (int __status, int __errnum, const char *__format, ...)
_GL_ATTRIBUTE_FORMAT ((__printf__, 3, 4));
#if GNULIB_VFPRINTF_POSIX
_GL_ATTRIBUTE_FORMAT ((_GL_ATTRIBUTE_SPEC_PRINTF_STANDARD, 3, 4))
#else
_GL_ATTRIBUTE_FORMAT ((_GL_ATTRIBUTE_SPEC_PRINTF_SYSTEM, 3, 4))
#endif
;
extern void error_at_line (int __status, int __errnum, const char *__fname,
unsigned int __lineno, const char *__format, ...)
_GL_ATTRIBUTE_FORMAT ((__printf__, 5, 6));
#if GNULIB_VFPRINTF_POSIX
_GL_ATTRIBUTE_FORMAT ((_GL_ATTRIBUTE_SPEC_PRINTF_STANDARD, 5, 6))
#else
_GL_ATTRIBUTE_FORMAT ((_GL_ATTRIBUTE_SPEC_PRINTF_SYSTEM, 5, 6))
#endif
;
/* If NULL, error will flush stdout, then print on stderr the program
name, a colon and a space. Otherwise, error will call this

18
gl/exitfail.c
View file

@ -1,19 +1,19 @@
/* Failure exit status
Copyright (C) 2002-2003, 2005-2007, 2009-2013 Free Software Foundation, Inc.
Copyright (C) 2002-2003, 2005-2007, 2009-2023 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
GNU Lesser General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#include <config.h>

18
gl/exitfail.h
View file

@ -1,18 +1,18 @@
/* Failure exit status
Copyright (C) 2002, 2009-2013 Free Software Foundation, Inc.
Copyright (C) 2002, 2009-2023 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
GNU Lesser General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
extern int volatile exit_failure;

629
gl/fcntl.c Normal file
View file

@ -0,0 +1,629 @@
/* Provide file descriptor control.
Copyright (C) 2009-2023 Free Software Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by Eric Blake <ebb9@byu.net>. */
#include <config.h>
/* Specification. */
#include <fcntl.h>
#include <errno.h>
#include <limits.h>
#include <stdarg.h>
#include <stdlib.h>
#include <unistd.h>
#ifdef __KLIBC__
# define INCL_DOS
# include <os2.h>
#endif
#if defined _WIN32 && ! defined __CYGWIN__
/* Get declarations of the native Windows API functions. */
# define WIN32_LEAN_AND_MEAN
# include <windows.h>
/* Get _get_osfhandle. */
# if GNULIB_MSVC_NOTHROW
# include "msvc-nothrow.h"
# else
# include <io.h>
# endif
/* Upper bound on getdtablesize(). See lib/getdtablesize.c. */
# define OPEN_MAX_MAX 0x10000
/* Duplicate OLDFD into the first available slot of at least NEWFD,
which must be positive, with FLAGS determining whether the duplicate
will be inheritable. */
static int
dupfd (int oldfd, int newfd, int flags)
{
/* Mingw has no way to create an arbitrary fd. Iterate until all
file descriptors less than newfd are filled up. */
HANDLE curr_process = GetCurrentProcess ();
HANDLE old_handle = (HANDLE) _get_osfhandle (oldfd);
unsigned char fds_to_close[OPEN_MAX_MAX / CHAR_BIT];
unsigned int fds_to_close_bound = 0;
int result;
BOOL inherit = flags & O_CLOEXEC ? FALSE : TRUE;
int mode;
if (newfd < 0 || getdtablesize () <= newfd)
{
errno = EINVAL;
return -1;
}
if (old_handle == INVALID_HANDLE_VALUE
|| (mode = _setmode (oldfd, O_BINARY)) == -1)
{
/* oldfd is not open, or is an unassigned standard file
descriptor. */
errno = EBADF;
return -1;
}
_setmode (oldfd, mode);
flags |= mode;
for (;;)
{
HANDLE new_handle;
int duplicated_fd;
unsigned int index;
if (!DuplicateHandle (curr_process, /* SourceProcessHandle */
old_handle, /* SourceHandle */
curr_process, /* TargetProcessHandle */
(PHANDLE) &new_handle, /* TargetHandle */
(DWORD) 0, /* DesiredAccess */
inherit, /* InheritHandle */
DUPLICATE_SAME_ACCESS)) /* Options */
{
switch (GetLastError ())
{
case ERROR_TOO_MANY_OPEN_FILES:
errno = EMFILE;
break;
case ERROR_INVALID_HANDLE:
case ERROR_INVALID_TARGET_HANDLE:
case ERROR_DIRECT_ACCESS_HANDLE:
errno = EBADF;
break;
case ERROR_INVALID_PARAMETER:
case ERROR_INVALID_FUNCTION:
case ERROR_INVALID_ACCESS:
errno = EINVAL;
break;
default:
errno = EACCES;
break;
}
result = -1;
break;
}
duplicated_fd = _open_osfhandle ((intptr_t) new_handle, flags);
if (duplicated_fd < 0)
{
CloseHandle (new_handle);
result = -1;
break;
}
if (newfd <= duplicated_fd)
{
result = duplicated_fd;
break;
}
/* Set the bit duplicated_fd in fds_to_close[]. */
index = (unsigned int) duplicated_fd / CHAR_BIT;
if (fds_to_close_bound <= index)
{
if (sizeof fds_to_close <= index)
/* Need to increase OPEN_MAX_MAX. */
abort ();
memset (fds_to_close + fds_to_close_bound, '\0',
index + 1 - fds_to_close_bound);
fds_to_close_bound = index + 1;
}
fds_to_close[index] |= 1 << ((unsigned int) duplicated_fd % CHAR_BIT);
}
/* Close the previous fds that turned out to be too small. */
{
int saved_errno = errno;
unsigned int duplicated_fd;
for (duplicated_fd = 0;
duplicated_fd < fds_to_close_bound * CHAR_BIT;
duplicated_fd++)
if ((fds_to_close[duplicated_fd / CHAR_BIT]
>> (duplicated_fd % CHAR_BIT))
& 1)
close (duplicated_fd);
errno = saved_errno;
}
# if REPLACE_FCHDIR
if (0 <= result)
result = _gl_register_dup (oldfd, result);
# endif
return result;
}
#endif /* W32 */
/* Forward declarations, because we '#undef fcntl' in the middle of this
compilation unit. */
/* Our implementation of fcntl (fd, F_DUPFD, target). */
static int rpl_fcntl_DUPFD (int fd, int target);
/* Our implementation of fcntl (fd, F_DUPFD_CLOEXEC, target). */
static int rpl_fcntl_DUPFD_CLOEXEC (int fd, int target);
#ifdef __KLIBC__
/* Adds support for fcntl on directories. */
static int klibc_fcntl (int fd, int action, /* arg */...);
#endif
/* Perform the specified ACTION on the file descriptor FD, possibly
using the argument ARG further described below. This replacement
handles the following actions, and forwards all others on to the
native fcntl. An unrecognized ACTION returns -1 with errno set to
EINVAL.
F_DUPFD - duplicate FD, with int ARG being the minimum target fd.
If successful, return the duplicate, which will be inheritable;
otherwise return -1 and set errno.
F_DUPFD_CLOEXEC - duplicate FD, with int ARG being the minimum
target fd. If successful, return the duplicate, which will not be
inheritable; otherwise return -1 and set errno.
F_GETFD - ARG need not be present. If successful, return a
non-negative value containing the descriptor flags of FD (only
FD_CLOEXEC is portable, but other flags may be present); otherwise
return -1 and set errno. */
int
fcntl (int fd, int action, /* arg */...)
#undef fcntl
#ifdef __KLIBC__
# define fcntl klibc_fcntl
#endif
{
va_list arg;
int result = -1;
va_start (arg, action);
switch (action)
{
case F_DUPFD:
{
int target = va_arg (arg, int);
result = rpl_fcntl_DUPFD (fd, target);
break;
}
case F_DUPFD_CLOEXEC:
{
int target = va_arg (arg, int);
result = rpl_fcntl_DUPFD_CLOEXEC (fd, target);
break;
}
#if !HAVE_FCNTL
case F_GETFD:
{
# if defined _WIN32 && ! defined __CYGWIN__
HANDLE handle = (HANDLE) _get_osfhandle (fd);
DWORD flags;
if (handle == INVALID_HANDLE_VALUE
|| GetHandleInformation (handle, &flags) == 0)
errno = EBADF;
else
result = (flags & HANDLE_FLAG_INHERIT) ? 0 : FD_CLOEXEC;
# else /* !W32 */
/* Use dup2 to reject invalid file descriptors. No way to
access this information, so punt. */
if (0 <= dup2 (fd, fd))
result = 0;
# endif /* !W32 */
break;
} /* F_GETFD */
#endif /* !HAVE_FCNTL */
/* Implementing F_SETFD on mingw is not trivial - there is no
API for changing the O_NOINHERIT bit on an fd, and merely
changing the HANDLE_FLAG_INHERIT bit on the underlying handle
can lead to odd state. It may be possible by duplicating the
handle, using _open_osfhandle with the right flags, then
using dup2 to move the duplicate onto the original, but that
is not supported for now. */
default:
{
#if HAVE_FCNTL
switch (action)
{
#ifdef F_BARRIERFSYNC /* macOS */
case F_BARRIERFSYNC:
#endif
#ifdef F_CHKCLEAN /* macOS */
case F_CHKCLEAN:
#endif
#ifdef F_CLOSEM /* NetBSD, HP-UX */
case F_CLOSEM:
#endif
#ifdef F_FLUSH_DATA /* macOS */
case F_FLUSH_DATA:
#endif
#ifdef F_FREEZE_FS /* macOS */
case F_FREEZE_FS:
#endif
#ifdef F_FULLFSYNC /* macOS */
case F_FULLFSYNC:
#endif
#ifdef F_GETCONFINED /* macOS */
case F_GETCONFINED:
#endif
#ifdef F_GETDEFAULTPROTLEVEL /* macOS */
case F_GETDEFAULTPROTLEVEL:
#endif
#ifdef F_GETFD /* POSIX */
case F_GETFD:
#endif
#ifdef F_GETFL /* POSIX */
case F_GETFL:
#endif
#ifdef F_GETLEASE /* Linux */
case F_GETLEASE:
#endif
#ifdef F_GETNOSIGPIPE /* macOS */
case F_GETNOSIGPIPE:
#endif
#ifdef F_GETOWN /* POSIX */
case F_GETOWN:
#endif
#ifdef F_GETPIPE_SZ /* Linux */
case F_GETPIPE_SZ:
#endif
#ifdef F_GETPROTECTIONCLASS /* macOS */
case F_GETPROTECTIONCLASS:
#endif
#ifdef F_GETPROTECTIONLEVEL /* macOS */
case F_GETPROTECTIONLEVEL:
#endif
#ifdef F_GET_SEALS /* Linux */
case F_GET_SEALS:
#endif
#ifdef F_GETSIG /* Linux */
case F_GETSIG:
#endif
#ifdef F_MAXFD /* NetBSD */
case F_MAXFD:
#endif
#ifdef F_RECYCLE /* macOS */
case F_RECYCLE:
#endif
#ifdef F_SETFIFOENH /* HP-UX */
case F_SETFIFOENH:
#endif
#ifdef F_THAW_FS /* macOS */
case F_THAW_FS:
#endif
/* These actions take no argument. */
result = fcntl (fd, action);
break;
#ifdef F_ADD_SEALS /* Linux */
case F_ADD_SEALS:
#endif
#ifdef F_BADFD /* Solaris */
case F_BADFD:
#endif
#ifdef F_CHECK_OPENEVT /* macOS */
case F_CHECK_OPENEVT:
#endif
#ifdef F_DUP2FD /* FreeBSD, AIX, Solaris */
case F_DUP2FD:
#endif
#ifdef F_DUP2FD_CLOEXEC /* FreeBSD, Solaris */
case F_DUP2FD_CLOEXEC:
#endif
#ifdef F_DUP2FD_CLOFORK /* Solaris */
case F_DUP2FD_CLOFORK:
#endif
#ifdef F_DUPFD /* POSIX */
case F_DUPFD:
#endif
#ifdef F_DUPFD_CLOEXEC /* POSIX */
case F_DUPFD_CLOEXEC:
#endif
#ifdef F_DUPFD_CLOFORK /* Solaris */
case F_DUPFD_CLOFORK:
#endif
#ifdef F_GETXFL /* Solaris */
case F_GETXFL:
#endif
#ifdef F_GLOBAL_NOCACHE /* macOS */
case F_GLOBAL_NOCACHE:
#endif
#ifdef F_MAKECOMPRESSED /* macOS */
case F_MAKECOMPRESSED:
#endif
#ifdef F_MOVEDATAEXTENTS /* macOS */
case F_MOVEDATAEXTENTS:
#endif
#ifdef F_NOCACHE /* macOS */
case F_NOCACHE:
#endif
#ifdef F_NODIRECT /* macOS */
case F_NODIRECT:
#endif
#ifdef F_NOTIFY /* Linux */
case F_NOTIFY:
#endif
#ifdef F_OPLKACK /* IRIX */
case F_OPLKACK:
#endif
#ifdef F_OPLKREG /* IRIX */
case F_OPLKREG:
#endif
#ifdef F_RDAHEAD /* macOS */
case F_RDAHEAD:
#endif
#ifdef F_SETBACKINGSTORE /* macOS */
case F_SETBACKINGSTORE:
#endif
#ifdef F_SETCONFINED /* macOS */
case F_SETCONFINED:
#endif
#ifdef F_SETFD /* POSIX */
case F_SETFD:
#endif
#ifdef F_SETFL /* POSIX */
case F_SETFL:
#endif
#ifdef F_SETLEASE /* Linux */
case F_SETLEASE:
#endif
#ifdef F_SETNOSIGPIPE /* macOS */
case F_SETNOSIGPIPE:
#endif
#ifdef F_SETOWN /* POSIX */
case F_SETOWN:
#endif
#ifdef F_SETPIPE_SZ /* Linux */
case F_SETPIPE_SZ:
#endif
#ifdef F_SETPROTECTIONCLASS /* macOS */
case F_SETPROTECTIONCLASS:
#endif
#ifdef F_SETSIG /* Linux */
case F_SETSIG:
#endif
#ifdef F_SINGLE_WRITER /* macOS */
case F_SINGLE_WRITER:
#endif
/* These actions take an 'int' argument. */
{
int x = va_arg (arg, int);
result = fcntl (fd, action, x);
}
break;
default:
/* Other actions take a pointer argument. */
{
void *p = va_arg (arg, void *);
result = fcntl (fd, action, p);
}
break;
}
#else
errno = EINVAL;
#endif
break;
}
}
va_end (arg);
return result;
}
static int
rpl_fcntl_DUPFD (int fd, int target)
{
int result;
#if !HAVE_FCNTL
result = dupfd (fd, target, 0);
#elif FCNTL_DUPFD_BUGGY || REPLACE_FCHDIR
/* Detect invalid target; needed for cygwin 1.5.x. */
if (target < 0 || getdtablesize () <= target)
{
result = -1;
errno = EINVAL;
}
else
{
/* Haiku alpha 2 loses fd flags on original. */
int flags = fcntl (fd, F_GETFD);
if (flags < 0)
result = -1;
else
{
result = fcntl (fd, F_DUPFD, target);
if (0 <= result && fcntl (fd, F_SETFD, flags) == -1)
{
int saved_errno = errno;
close (result);
result = -1;
errno = saved_errno;
}
# if REPLACE_FCHDIR
if (0 <= result)
result = _gl_register_dup (fd, result);
# endif
}
}
#else
result = fcntl (fd, F_DUPFD, target);
#endif
return result;
}
static int
rpl_fcntl_DUPFD_CLOEXEC (int fd, int target)
{
int result;
#if !HAVE_FCNTL
result = dupfd (fd, target, O_CLOEXEC);
#else /* HAVE_FCNTL */
# if defined __NetBSD__ || defined __HAIKU__
/* On NetBSD 9.0, the system fcntl (fd, F_DUPFD_CLOEXEC, target)
has only the same effect as fcntl (fd, F_DUPFD, target). */
/* On Haiku, the system fcntl (fd, F_DUPFD_CLOEXEC, target) sets
the FD_CLOEXEC flag on fd, not on target. Therefore avoid the
system fcntl in this case. */
# define have_dupfd_cloexec -1
# else
/* Try the system call first, if the headers claim it exists
(that is, if GNULIB_defined_F_DUPFD_CLOEXEC is 0), since we
may be running with a glibc that has the macro but with an
older kernel that does not support it. Cache the
information on whether the system call really works, but
avoid caching failure if the corresponding F_DUPFD fails
for any reason. 0 = unknown, 1 = yes, -1 = no. */
static int have_dupfd_cloexec = GNULIB_defined_F_DUPFD_CLOEXEC ? -1 : 0;
if (0 <= have_dupfd_cloexec)
{
result = fcntl (fd, F_DUPFD_CLOEXEC, target);
if (0 <= result || errno != EINVAL)
{
have_dupfd_cloexec = 1;
# if REPLACE_FCHDIR
if (0 <= result)
result = _gl_register_dup (fd, result);
# endif
}
else
{
result = rpl_fcntl_DUPFD (fd, target);
if (result >= 0)
have_dupfd_cloexec = -1;
}
}
else
# endif
result = rpl_fcntl_DUPFD (fd, target);
if (0 <= result && have_dupfd_cloexec == -1)
{
int flags = fcntl (result, F_GETFD);
if (flags < 0 || fcntl (result, F_SETFD, flags | FD_CLOEXEC) == -1)
{
int saved_errno = errno;
close (result);
errno = saved_errno;
result = -1;
}
}
#endif /* HAVE_FCNTL */
return result;
}
#undef fcntl
#ifdef __KLIBC__
static int
klibc_fcntl (int fd, int action, /* arg */...)
{
va_list arg_ptr;
int arg;
struct stat sbuf;
int result;
va_start (arg_ptr, action);
arg = va_arg (arg_ptr, int);
result = fcntl (fd, action, arg);
/* EPERM for F_DUPFD, ENOTSUP for others */
if (result == -1 && (errno == EPERM || errno == ENOTSUP)
&& !fstat (fd, &sbuf) && S_ISDIR (sbuf.st_mode))
{
ULONG ulMode;
switch (action)
{
case F_DUPFD:
/* Find available fd */
while (fcntl (arg, F_GETFL) != -1 || errno != EBADF)
arg++;
result = dup2 (fd, arg);
break;
/* Using underlying APIs is right ? */
case F_GETFD:
if (DosQueryFHState (fd, &ulMode))
break;
result = (ulMode & OPEN_FLAGS_NOINHERIT) ? FD_CLOEXEC : 0;
break;
case F_SETFD:
if (arg & ~FD_CLOEXEC)
break;
if (DosQueryFHState (fd, &ulMode))
break;
if (arg & FD_CLOEXEC)
ulMode |= OPEN_FLAGS_NOINHERIT;
else
ulMode &= ~OPEN_FLAGS_NOINHERIT;
/* Filter supported flags. */
ulMode &= (OPEN_FLAGS_WRITE_THROUGH | OPEN_FLAGS_FAIL_ON_ERROR
| OPEN_FLAGS_NO_CACHE | OPEN_FLAGS_NOINHERIT);
if (DosSetFHState (fd, ulMode))
break;
result = 0;
break;
case F_GETFL:
result = 0;
break;
case F_SETFL:
if (arg != 0)
break;
result = 0;
break;
default:
errno = EINVAL;
break;
}
}
va_end (arg_ptr);
return result;
}
#endif

445
gl/fcntl.in.h Normal file
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@ -0,0 +1,445 @@
/* Like <fcntl.h>, but with non-working flags defined to 0.
Copyright (C) 2006-2023 Free Software Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* written by Paul Eggert */
#if __GNUC__ >= 3
@PRAGMA_SYSTEM_HEADER@
#endif
@PRAGMA_COLUMNS@
#if defined __need_system_fcntl_h
/* Special invocation convention. */
/* Needed before <sys/stat.h>.
May also define off_t to a 64-bit type on native Windows. */
#include <sys/types.h>
/* On some systems other than glibc, <sys/stat.h> is a prerequisite of
<fcntl.h>. On glibc systems, we would like to avoid namespace pollution.
But on glibc systems, <fcntl.h> includes <sys/stat.h> inside an
extern "C" { ... } block, which leads to errors in C++ mode with the
overridden <sys/stat.h> from gnulib. These errors are known to be gone
with g++ version >= 4.3. */
#if !(defined __GLIBC__ || defined __UCLIBC__) || (defined __cplusplus && defined GNULIB_NAMESPACE && (defined __ICC || !(__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3))))
# include <sys/stat.h>
#endif
#@INCLUDE_NEXT@ @NEXT_FCNTL_H@
/* Native Windows platforms declare open(), creat() in <io.h>. */
#if (@GNULIB_CREAT@ || @GNULIB_OPEN@ || defined GNULIB_POSIXCHECK) \
&& (defined _WIN32 && ! defined __CYGWIN__)
# include <io.h>
#endif
#else
/* Normal invocation convention. */
#ifndef _@GUARD_PREFIX@_FCNTL_H
/* Needed before <sys/stat.h>.
May also define off_t to a 64-bit type on native Windows. */
#include <sys/types.h>
/* On some systems other than glibc, <sys/stat.h> is a prerequisite of
<fcntl.h>. On glibc systems, we would like to avoid namespace pollution.
But on glibc systems, <fcntl.h> includes <sys/stat.h> inside an
extern "C" { ... } block, which leads to errors in C++ mode with the
overridden <sys/stat.h> from gnulib. These errors are known to be gone
with g++ version >= 4.3. */
#if !(defined __GLIBC__ || defined __UCLIBC__) || (defined __cplusplus && defined GNULIB_NAMESPACE && (defined __ICC || !(__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3))))
# include <sys/stat.h>
#endif
/* The include_next requires a split double-inclusion guard. */
#@INCLUDE_NEXT@ @NEXT_FCNTL_H@
/* Native Windows platforms declare open(), creat() in <io.h>. */
#if (@GNULIB_CREAT@ || @GNULIB_OPEN@ || defined GNULIB_POSIXCHECK) \
&& (defined _WIN32 && ! defined __CYGWIN__)
# include <io.h>
#endif
#ifndef _@GUARD_PREFIX@_FCNTL_H
#define _@GUARD_PREFIX@_FCNTL_H
#ifndef __GLIBC__ /* Avoid namespace pollution on glibc systems. */
# include <unistd.h>
#endif
/* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */
/* The definition of _GL_ARG_NONNULL is copied here. */
/* The definition of _GL_WARN_ON_USE is copied here. */
/* Declare overridden functions. */
#if @GNULIB_CREAT@
# if @REPLACE_CREAT@
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# undef creat
# define creat rpl_creat
# endif
_GL_FUNCDECL_RPL (creat, int, (const char *filename, mode_t mode)
_GL_ARG_NONNULL ((1)));
_GL_CXXALIAS_RPL (creat, int, (const char *filename, mode_t mode));
# elif defined _WIN32 && !defined __CYGWIN__
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# undef creat
# define creat _creat
# endif
_GL_CXXALIAS_MDA (creat, int, (const char *filename, mode_t mode));
# else
_GL_CXXALIAS_SYS (creat, int, (const char *filename, mode_t mode));
# endif
_GL_CXXALIASWARN (creat);
#elif defined GNULIB_POSIXCHECK
# undef creat
/* Assume creat is always declared. */
_GL_WARN_ON_USE (creat, "creat is not always POSIX compliant - "
"use gnulib module creat for portability");
#elif @GNULIB_MDA_CREAT@
/* On native Windows, map 'creat' to '_creat', so that -loldnames is not
required. In C++ with GNULIB_NAMESPACE, avoid differences between
platforms by defining GNULIB_NAMESPACE::creat always. */
# if defined _WIN32 && !defined __CYGWIN__
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# undef creat
# define creat _creat
# endif
/* Need to cast, because in mingw the last argument is 'int mode'. */
_GL_CXXALIAS_MDA_CAST (creat, int, (const char *filename, mode_t mode));
# else
_GL_CXXALIAS_SYS (creat, int, (const char *filename, mode_t mode));
# endif
_GL_CXXALIASWARN (creat);
#endif
#if @GNULIB_FCNTL@
# if @REPLACE_FCNTL@
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# undef fcntl
# define fcntl rpl_fcntl
# endif
_GL_FUNCDECL_RPL (fcntl, int, (int fd, int action, ...));
_GL_CXXALIAS_RPL (fcntl, int, (int fd, int action, ...));
# if !GNULIB_defined_rpl_fcntl
# define GNULIB_defined_rpl_fcntl 1
# endif
# else
# if !@HAVE_FCNTL@
_GL_FUNCDECL_SYS (fcntl, int, (int fd, int action, ...));
# if !GNULIB_defined_fcntl
# define GNULIB_defined_fcntl 1
# endif
# endif
_GL_CXXALIAS_SYS (fcntl, int, (int fd, int action, ...));
# endif
_GL_CXXALIASWARN (fcntl);
#elif defined GNULIB_POSIXCHECK
# undef fcntl
# if HAVE_RAW_DECL_FCNTL
_GL_WARN_ON_USE (fcntl, "fcntl is not always POSIX compliant - "
"use gnulib module fcntl for portability");
# endif
#endif
#if @GNULIB_OPEN@
# if @REPLACE_OPEN@
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# undef open
# define open rpl_open
# endif
_GL_FUNCDECL_RPL (open, int, (const char *filename, int flags, ...)
_GL_ARG_NONNULL ((1)));
_GL_CXXALIAS_RPL (open, int, (const char *filename, int flags, ...));
# elif defined _WIN32 && !defined __CYGWIN__
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# undef open
# define open _open
# endif
_GL_CXXALIAS_MDA (open, int, (const char *filename, int flags, ...));
# else
_GL_CXXALIAS_SYS (open, int, (const char *filename, int flags, ...));
# endif
/* On HP-UX 11, in C++ mode, open() is defined as an inline function with a
default argument. _GL_CXXALIASWARN does not work in this case. */
# if !defined __hpux
_GL_CXXALIASWARN (open);
# endif
#elif defined GNULIB_POSIXCHECK
# undef open
/* Assume open is always declared. */
_GL_WARN_ON_USE (open, "open is not always POSIX compliant - "
"use gnulib module open for portability");
#elif @GNULIB_MDA_OPEN@
/* On native Windows, map 'open' to '_open', so that -loldnames is not
required. In C++ with GNULIB_NAMESPACE, avoid differences between
platforms by defining GNULIB_NAMESPACE::open always. */
# if defined _WIN32 && !defined __CYGWIN__
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# undef open
# define open _open
# endif
_GL_CXXALIAS_MDA (open, int, (const char *filename, int flags, ...));
# else
_GL_CXXALIAS_SYS (open, int, (const char *filename, int flags, ...));
# endif
# if !defined __hpux
_GL_CXXALIASWARN (open);
# endif
#endif
#if @GNULIB_OPENAT@
# if @REPLACE_OPENAT@
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# undef openat
# define openat rpl_openat
# endif
_GL_FUNCDECL_RPL (openat, int,
(int fd, char const *file, int flags, /* mode_t mode */ ...)
_GL_ARG_NONNULL ((2)));
_GL_CXXALIAS_RPL (openat, int,
(int fd, char const *file, int flags, /* mode_t mode */ ...));
# else
# if !@HAVE_OPENAT@
_GL_FUNCDECL_SYS (openat, int,
(int fd, char const *file, int flags, /* mode_t mode */ ...)
_GL_ARG_NONNULL ((2)));
# endif
_GL_CXXALIAS_SYS (openat, int,
(int fd, char const *file, int flags, /* mode_t mode */ ...));
# endif
_GL_CXXALIASWARN (openat);
#elif defined GNULIB_POSIXCHECK
# undef openat
# if HAVE_RAW_DECL_OPENAT
_GL_WARN_ON_USE (openat, "openat is not portable - "
"use gnulib module openat for portability");
# endif
#endif
/* Fix up the FD_* macros, only known to be missing on mingw. */
#ifndef FD_CLOEXEC
# define FD_CLOEXEC 1
#endif
/* Fix up the supported F_* macros. Intentionally leave other F_*
macros undefined. Only known to be missing on mingw. */
#ifndef F_DUPFD_CLOEXEC
# define F_DUPFD_CLOEXEC 0x40000000
/* Witness variable: 1 if gnulib defined F_DUPFD_CLOEXEC, 0 otherwise. */
# define GNULIB_defined_F_DUPFD_CLOEXEC 1
#else
# define GNULIB_defined_F_DUPFD_CLOEXEC 0
#endif
#ifndef F_DUPFD
# define F_DUPFD 1
#endif
#ifndef F_GETFD
# define F_GETFD 2
#endif
/* Fix up the O_* macros. */
/* AIX 7.1 with XL C 12.1 defines O_CLOEXEC, O_NOFOLLOW, and O_TTY_INIT
to values outside 'int' range, so omit these misdefinitions.
But avoid namespace pollution on non-AIX systems. */
#ifdef _AIX
# include <limits.h>
# if defined O_CLOEXEC && ! (INT_MIN <= O_CLOEXEC && O_CLOEXEC <= INT_MAX)
# undef O_CLOEXEC
# endif
# if defined O_NOFOLLOW && ! (INT_MIN <= O_NOFOLLOW && O_NOFOLLOW <= INT_MAX)
# undef O_NOFOLLOW
# endif
# if defined O_TTY_INIT && ! (INT_MIN <= O_TTY_INIT && O_TTY_INIT <= INT_MAX)
# undef O_TTY_INIT
# endif
#endif
#if !defined O_DIRECT && defined O_DIRECTIO
/* Tru64 spells it 'O_DIRECTIO'. */
# define O_DIRECT O_DIRECTIO
#endif
#if !defined O_CLOEXEC && defined O_NOINHERIT
/* Mingw spells it 'O_NOINHERIT'. */
# define O_CLOEXEC O_NOINHERIT
#endif
#ifndef O_CLOEXEC
# define O_CLOEXEC 0x40000000 /* Try to not collide with system O_* flags. */
# define GNULIB_defined_O_CLOEXEC 1
#else
# define GNULIB_defined_O_CLOEXEC 0
#endif
#ifndef O_DIRECT
# define O_DIRECT 0
#endif
#ifndef O_DIRECTORY
# define O_DIRECTORY 0
#endif
#ifndef O_DSYNC
# define O_DSYNC 0
#endif
#ifndef O_EXEC
# define O_EXEC O_RDONLY /* This is often close enough in older systems. */
#endif
#ifndef O_IGNORE_CTTY
# define O_IGNORE_CTTY 0
#endif
#ifndef O_NDELAY
# define O_NDELAY 0
#endif
#ifndef O_NOATIME
# define O_NOATIME 0
#endif
#ifndef O_NONBLOCK
# define O_NONBLOCK O_NDELAY
#endif
/* If the gnulib module 'nonblocking' is in use, guarantee a working non-zero
value of O_NONBLOCK. Otherwise, O_NONBLOCK is defined (above) to O_NDELAY
or to 0 as fallback. */
#if @GNULIB_NONBLOCKING@
# if O_NONBLOCK
# define GNULIB_defined_O_NONBLOCK 0
# else
# define GNULIB_defined_O_NONBLOCK 1
# undef O_NONBLOCK
# define O_NONBLOCK 0x40000000
# endif
#endif
#ifndef O_NOCTTY
# define O_NOCTTY 0
#endif
#ifndef O_NOFOLLOW
# define O_NOFOLLOW 0
#endif
#ifndef O_NOLINK
# define O_NOLINK 0
#endif
#ifndef O_NOLINKS
# define O_NOLINKS 0
#endif
#ifndef O_NOTRANS
# define O_NOTRANS 0
#endif
#ifndef O_RSYNC
# define O_RSYNC 0
#endif
#ifndef O_SEARCH
# define O_SEARCH O_RDONLY /* This is often close enough in older systems. */
#endif
#ifndef O_SYNC
# define O_SYNC 0
#endif
#ifndef O_TTY_INIT
# define O_TTY_INIT 0
#endif
#if ~O_ACCMODE & (O_RDONLY | O_WRONLY | O_RDWR | O_EXEC | O_SEARCH)
# undef O_ACCMODE
# define O_ACCMODE (O_RDONLY | O_WRONLY | O_RDWR | O_EXEC | O_SEARCH)
#endif
/* For systems that distinguish between text and binary I/O.
O_BINARY is usually declared in fcntl.h */
#if !defined O_BINARY && defined _O_BINARY
/* For MSC-compatible compilers. */
# define O_BINARY _O_BINARY
# define O_TEXT _O_TEXT
#endif
#if defined __BEOS__ || defined __HAIKU__
/* BeOS 5 and Haiku have O_BINARY and O_TEXT, but they have no effect. */
# undef O_BINARY
# undef O_TEXT
#endif
#ifndef O_BINARY
# define O_BINARY 0
# define O_TEXT 0
#endif
/* Fix up the AT_* macros. */
/* Work around a bug in Solaris 9 and 10: AT_FDCWD is positive. Its
value exceeds INT_MAX, so its use as an int doesn't conform to the
C standard, and GCC and Sun C complain in some cases. If the bug
is present, undef AT_FDCWD here, so it can be redefined below. */
#if 0 < AT_FDCWD && AT_FDCWD == 0xffd19553
# undef AT_FDCWD
#endif
/* Use the same bit pattern as Solaris 9, but with the proper
signedness. The bit pattern is important, in case this actually is
Solaris with the above workaround. */
#ifndef AT_FDCWD
# define AT_FDCWD (-3041965)
#endif
/* Use the same values as Solaris 9. This shouldn't matter, but
there's no real reason to differ. */
#ifndef AT_SYMLINK_NOFOLLOW
# define AT_SYMLINK_NOFOLLOW 4096
#endif
#ifndef AT_REMOVEDIR
# define AT_REMOVEDIR 1
#endif
/* Solaris 9 lacks these two, so just pick unique values. */
#ifndef AT_SYMLINK_FOLLOW
# define AT_SYMLINK_FOLLOW 2
#endif
#ifndef AT_EACCESS
# define AT_EACCESS 4
#endif
/* Ignore this flag if not supported. */
#ifndef AT_NO_AUTOMOUNT
# define AT_NO_AUTOMOUNT 0
#endif
#endif /* _@GUARD_PREFIX@_FCNTL_H */
#endif /* _@GUARD_PREFIX@_FCNTL_H */
#endif

22
gl/fd-hook.c
View file

@ -1,19 +1,19 @@
/* Hook for making making file descriptor functions close(), ioctl() extensible.
Copyright (C) 2009-2013 Free Software Foundation, Inc.
/* Hook for making file descriptor functions close(), ioctl() extensible.
Copyright (C) 2009-2023 Free Software Foundation, Inc.
Written by Bruno Haible <bruno@clisp.org>, 2009.
This program is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#include <config.h>

22
gl/fd-hook.h
View file

@ -1,18 +1,18 @@
/* Hook for making making file descriptor functions close(), ioctl() extensible.
Copyright (C) 2009-2013 Free Software Foundation, Inc.
/* Hook for making file descriptor functions close(), ioctl() extensible.
Copyright (C) 2009-2023 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#ifndef FD_HOOK_H

233
gl/fflush.c Normal file
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@ -0,0 +1,233 @@
/* fflush.c -- allow flushing input streams
Copyright (C) 2007-2023 Free Software Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by Eric Blake. */
#include <config.h>
/* Specification. */
#include <stdio.h>
#include <errno.h>
#include <unistd.h>
#include "freading.h"
#include "stdio-impl.h"
#undef fflush
#if defined _IO_EOF_SEEN || defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1
/* GNU libc, BeOS, Haiku, Linux libc5 */
/* Clear the stream's ungetc buffer, preserving the value of ftello (fp). */
static void
clear_ungetc_buffer_preserving_position (FILE *fp)
{
if (fp->_flags & _IO_IN_BACKUP)
/* _IO_free_backup_area is a bit complicated. Simply call fseek. */
fseeko (fp, 0, SEEK_CUR);
}
#else
/* Clear the stream's ungetc buffer. May modify the value of ftello (fp). */
static void
clear_ungetc_buffer (FILE *fp)
{
# if defined __sferror || defined __DragonFly__ || defined __ANDROID__
/* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin, Minix 3, Android */
if (HASUB (fp))
{
fp_->_p += fp_->_r;
fp_->_r = 0;
}
# elif defined __EMX__ /* emx+gcc */
if (fp->_ungetc_count > 0)
{
fp->_ungetc_count = 0;
fp->_rcount = - fp->_rcount;
}
# elif defined _IOERR /* Minix, AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, UnixWare, mingw, MSVC, NonStop Kernel, OpenVMS */
/* Nothing to do. */
# else /* other implementations */
fseeko (fp, 0, SEEK_CUR);
# endif
}
#endif
#if ! (defined _IO_EOF_SEEN || defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1)
/* GNU libc, BeOS, Haiku, Linux libc5 */
# if (defined __sferror || defined __DragonFly__ || defined __ANDROID__) && defined __SNPT
/* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin, Minix 3, Android */
static int
disable_seek_optimization (FILE *fp)
{
int saved_flags = fp_->_flags & (__SOPT | __SNPT);
fp_->_flags = (fp_->_flags & ~__SOPT) | __SNPT;
return saved_flags;
}
static void
restore_seek_optimization (FILE *fp, int saved_flags)
{
fp_->_flags = (fp_->_flags & ~(__SOPT | __SNPT)) | saved_flags;
}
# else
static void
update_fpos_cache (_GL_ATTRIBUTE_MAYBE_UNUSED FILE *fp,
_GL_ATTRIBUTE_MAYBE_UNUSED off_t pos)
{
# if defined __sferror || defined __DragonFly__ || defined __ANDROID__
/* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin, Minix 3, Android */
# if defined __CYGWIN__ || defined __ANDROID__
/* fp_->_offset is typed as an integer. */
fp_->_offset = pos;
# else
/* fp_->_offset is an fpos_t. */
/* Use a union, since on NetBSD, the compilation flags determine
whether fpos_t is typedef'd to off_t or a struct containing a
single off_t member. */
union
{
fpos_t f;
off_t o;
} u;
u.o = pos;
fp_->_offset = u.f;
# endif
fp_->_flags |= __SOFF;
# endif
}
# endif
#endif
/* Flush all pending data on STREAM according to POSIX rules. Both
output and seekable input streams are supported. */
int
rpl_fflush (FILE *stream)
{
/* When stream is NULL, POSIX and C99 only require flushing of "output
streams and update streams in which the most recent operation was not
input", and all implementations do this.
When stream is "an output stream or an update stream in which the most
recent operation was not input", POSIX and C99 requires that fflush
writes out any buffered data, and all implementations do this.
When stream is, however, an input stream or an update stream in
which the most recent operation was input, C99 specifies nothing,
and POSIX only specifies behavior if the stream is seekable.
mingw, in particular, drops the input buffer, leaving the file
descriptor positioned at the end of the input buffer. I.e. ftell
(stream) is lost. We don't want to call the implementation's
fflush in this case.
We test ! freading (stream) here, rather than fwriting (stream), because
what we need to know is whether the stream holds a "read buffer", and on
mingw this is indicated by _IOREAD, regardless of _IOWRT. */
if (stream == NULL || ! freading (stream))
return fflush (stream);
#if defined _IO_EOF_SEEN || defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1
/* GNU libc, BeOS, Haiku, Linux libc5 */
clear_ungetc_buffer_preserving_position (stream);
return fflush (stream);
#else
{
/* What POSIX says:
1) About the file-position indicator (-> fseeko, ftello):
The file position indicator is incremented by fgetc() and decremented
by ungetc():
<https://pubs.opengroup.org/onlinepubs/9699919799/functions/fgetc.html>
"... the fgetc() function shall ... advance the associated file
position indicator for the stream ..."
<https://pubs.opengroup.org/onlinepubs/9699919799/functions/ungetc.html>
"The file-position indicator is decremented by each successful
call to ungetc()..."
2) fflush discards bytes pushed back by ungetc:
<https://pubs.opengroup.org/onlinepubs/9699919799/functions/fflush.html>
"...any characters pushed back onto the stream by ungetc()
or ungetwc() that have not subsequently been read from the
stream shall be discarded..."
This implies implicitly: fflush does not change the file position
indicator.
3) Effects on the file descriptor, if the file descriptor is capable of
seeking:
<https://pubs.opengroup.org/onlinepubs/9699919799/functions/fflush.html>
"...the file offset of the underlying open file description shall
be set to the file position of the stream..." */
/* POSIX does not specify fflush behavior for non-seekable input
streams. Some implementations purge unread data, some return
EBADF, some do nothing. */
off_t pos = ftello (stream);
if (pos == -1)
{
errno = EBADF;
return EOF;
}
/* Clear the ungetc buffer. */
clear_ungetc_buffer (stream);
/* To get here, we must be flushing a seekable input stream, so the
semantics of fpurge are now appropriate to clear the buffer. To
avoid losing data, the lseek is also necessary. */
{
int result = fpurge (stream);
if (result != 0)
return result;
}
# if (defined __sferror || defined __DragonFly__ || defined __ANDROID__) && defined __SNPT
/* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin, Minix 3, Android */
{
/* Disable seek optimization for the next fseeko call. This tells the
following fseeko call to seek to the desired position directly, rather
than to seek to a block-aligned boundary. */
int saved_flags = disable_seek_optimization (stream);
int result = fseeko (stream, pos, SEEK_SET);
restore_seek_optimization (stream, saved_flags);
return result;
}
# else
pos = lseek (fileno (stream), pos, SEEK_SET);
if (pos == -1)
return EOF;
/* After a successful lseek, update the file descriptor's position cache
in the stream. */
update_fpos_cache (stream, pos);
return 0;
# endif
}
#endif
}

112
gl/filename.h Normal file
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@ -0,0 +1,112 @@
/* Basic filename support macros.
Copyright (C) 2001-2023 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
/* From Paul Eggert and Jim Meyering. */
#ifndef _FILENAME_H
#define _FILENAME_H
#include <string.h>
#ifdef __cplusplus
extern "C" {
#endif
/* Filename support.
ISSLASH(C) tests whether C is a directory separator
character.
HAS_DEVICE(Filename) tests whether Filename contains a device
specification.
FILE_SYSTEM_PREFIX_LEN(Filename) length of the device specification
at the beginning of Filename,
index of the part consisting of
alternating components and slashes.
FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE
1 when a non-empty device specification
can be followed by an empty or relative
part,
0 when a non-empty device specification
must be followed by a slash,
0 when device specification don't exist.
IS_ABSOLUTE_FILE_NAME(Filename)
tests whether Filename is independent of
any notion of "current directory".
IS_RELATIVE_FILE_NAME(Filename)
tests whether Filename may be concatenated
to a directory filename.
Note: On native Windows, OS/2, DOS, "c:" is neither an absolute nor a
relative file name!
IS_FILE_NAME_WITH_DIR(Filename) tests whether Filename contains a device
or directory specification.
*/
#if defined _WIN32 || defined __CYGWIN__ \
|| defined __EMX__ || defined __MSDOS__ || defined __DJGPP__
/* Native Windows, Cygwin, OS/2, DOS */
# define ISSLASH(C) ((C) == '/' || (C) == '\\')
/* Internal macro: Tests whether a character is a drive letter. */
# define _IS_DRIVE_LETTER(C) \
(((C) >= 'A' && (C) <= 'Z') || ((C) >= 'a' && (C) <= 'z'))
/* Help the compiler optimizing it. This assumes ASCII. */
# undef _IS_DRIVE_LETTER
# define _IS_DRIVE_LETTER(C) \
(((unsigned int) (C) | ('a' - 'A')) - 'a' <= 'z' - 'a')
# define HAS_DEVICE(Filename) \
(_IS_DRIVE_LETTER ((Filename)[0]) && (Filename)[1] == ':')
# define FILE_SYSTEM_PREFIX_LEN(Filename) (HAS_DEVICE (Filename) ? 2 : 0)
# ifdef __CYGWIN__
# define FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE 0
# else
/* On native Windows, OS/2, DOS, the system has the notion of a
"current directory" on each drive. */
# define FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE 1
# endif
# if FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE
# define IS_ABSOLUTE_FILE_NAME(Filename) \
ISSLASH ((Filename)[FILE_SYSTEM_PREFIX_LEN (Filename)])
# else
# define IS_ABSOLUTE_FILE_NAME(Filename) \
(ISSLASH ((Filename)[0]) || HAS_DEVICE (Filename))
# endif
# define IS_RELATIVE_FILE_NAME(Filename) \
(! (ISSLASH ((Filename)[0]) || HAS_DEVICE (Filename)))
# define IS_FILE_NAME_WITH_DIR(Filename) \
(strchr ((Filename), '/') != NULL || strchr ((Filename), '\\') != NULL \
|| HAS_DEVICE (Filename))
#else
/* Unix */
# define ISSLASH(C) ((C) == '/')
# define HAS_DEVICE(Filename) ((void) (Filename), 0)
# define FILE_SYSTEM_PREFIX_LEN(Filename) ((void) (Filename), 0)
# define FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE 0
# define IS_ABSOLUTE_FILE_NAME(Filename) ISSLASH ((Filename)[0])
# define IS_RELATIVE_FILE_NAME(Filename) (! ISSLASH ((Filename)[0]))
# define IS_FILE_NAME_WITH_DIR(Filename) (strchr ((Filename), '/') != NULL)
#endif
/* Deprecated macros. For backward compatibility with old users of the
'filename' module. */
#define IS_ABSOLUTE_PATH IS_ABSOLUTE_FILE_NAME
#define IS_PATH_WITH_DIR IS_FILE_NAME_WITH_DIR
#ifdef __cplusplus
}
#endif
#endif /* _FILENAME_H */

18
gl/float+.h
View file

@ -1,19 +1,19 @@
/* Supplemental information about the floating-point formats.
Copyright (C) 2007, 2009-2013 Free Software Foundation, Inc.
Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
Written by Bruno Haible <bruno@clisp.org>, 2007.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
GNU Lesser General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, see <http://www.gnu.org/licenses/>. */
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#ifndef _FLOATPLUS_H
#define _FLOATPLUS_H

18
gl/float.c
View file

@ -1,19 +1,19 @@
/* Auxiliary definitions for <float.h>.
Copyright (C) 2011-2013 Free Software Foundation, Inc.
Copyright (C) 2011-2023 Free Software Foundation, Inc.
Written by Bruno Haible <bruno@clisp.org>, 2011.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
GNU Lesser General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#include <config.h>

30
gl/float.in.h
View file

@ -1,19 +1,19 @@
/* A correct <float.h>.
Copyright (C) 2007-2013 Free Software Foundation, Inc.
Copyright (C) 2007-2023 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
GNU Lesser General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#ifndef _@GUARD_PREFIX@_FLOAT_H
@ -62,8 +62,8 @@
/* On FreeBSD/x86 6.4, the 'long double' type really has only 53 bits of
precision in the compiler but 64 bits of precision at runtime. See
<http://lists.gnu.org/archive/html/bug-gnulib/2008-07/msg00063.html>. */
#if defined __i386__ && defined __FreeBSD__
<https://lists.gnu.org/r/bug-gnulib/2008-07/msg00063.html>. */
#if defined __i386__ && (defined __FreeBSD__ || defined __DragonFly__)
/* Number of mantissa units, in base FLT_RADIX. */
# undef LDBL_MANT_DIG
# define LDBL_MANT_DIG 64
@ -81,7 +81,7 @@
# define LDBL_MAX_EXP 16384
/* Minimum positive normalized number. */
# undef LDBL_MIN
# define LDBL_MIN 3.3621031431120935E-4932L /* = 0x1p-16382L */
# define LDBL_MIN 3.362103143112093506262677817321752E-4932L /* = 0x1p-16382L */
/* Maximum representable finite number. */
# undef LDBL_MAX
/* LDBL_MAX is represented as { 0xFFFFFFFF, 0xFFFFFFFF, 32766 }.
@ -93,11 +93,14 @@
extern const long double LDBL_MAX;
Unfortunately, this is not a constant expression. */
# if !GNULIB_defined_long_double_union
union gl_long_double_union
{
struct { unsigned int lo; unsigned int hi; unsigned int exponent; } xd;
long double ld;
};
# define GNULIB_defined_long_double_union 1
# endif
extern const union gl_long_double_union gl_LDBL_MAX;
# define LDBL_MAX (gl_LDBL_MAX.ld)
/* Minimum e such that 10^e is in the range of normalized numbers. */
@ -146,11 +149,14 @@ extern const union gl_long_double_union gl_LDBL_MAX;
Unfortunately, this is not a constant expression, and the latter expression
does not work well when GCC is optimizing.. */
# if !GNULIB_defined_long_double_union
union gl_long_double_union
{
struct { double hi; double lo; } dd;
long double ld;
};
# define GNULIB_defined_long_double_union 1
# endif
extern const union gl_long_double_union gl_LDBL_MAX;
# define LDBL_MAX (gl_LDBL_MAX.ld)
#endif

20
gl/floor.c
View file

@ -1,18 +1,18 @@
/* Round towards negative infinity.
Copyright (C) 2007, 2010-2013 Free Software Foundation, Inc.
Copyright (C) 2007, 2010-2023 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
GNU Lesser General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by Bruno Haible <bruno@clisp.org>, 2007. */
@ -44,7 +44,7 @@
/* MSVC with option -fp:strict refuses to compile constant initializers that
contain floating-point operations. Pacify this compiler. */
#ifdef _MSC_VER
#if defined _MSC_VER && !defined __clang__
# pragma fenv_access (off)
#endif

18
gl/floorf.c
View file

@ -1,18 +1,18 @@
/* Round towards negative infinity.
Copyright (C) 2007, 2009-2013 Free Software Foundation, Inc.
Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
GNU Lesser General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by Bruno Haible <bruno@clisp.org>, 2007. */

229
gl/fopen.c Normal file
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@ -0,0 +1,229 @@
/* Open a stream to a file.
Copyright (C) 2007-2023 Free Software Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by Bruno Haible <bruno@clisp.org>, 2007. */
/* If the user's config.h happens to include <stdio.h>, let it include only
the system's <stdio.h> here, so that orig_fopen doesn't recurse to
rpl_fopen. */
#define _GL_ALREADY_INCLUDING_STDIO_H
#include <config.h>
/* Get the original definition of fopen. It might be defined as a macro. */
#include <stdio.h>
#undef _GL_ALREADY_INCLUDING_STDIO_H
static FILE *
orig_fopen (const char *filename, const char *mode)
{
return fopen (filename, mode);
}
/* Specification. */
/* Write "stdio.h" here, not <stdio.h>, otherwise OSF/1 5.1 DTK cc eliminates
this include because of the preliminary #include <stdio.h> above. */
#include "stdio.h"
#include <errno.h>
#include <fcntl.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
FILE *
rpl_fopen (const char *filename, const char *mode)
{
int open_direction;
int open_flags;
#if GNULIB_FOPEN_GNU
bool open_flags_gnu;
# define BUF_SIZE 80
char fdopen_mode_buf[BUF_SIZE + 1];
#endif
#if defined _WIN32 && ! defined __CYGWIN__
if (strcmp (filename, "/dev/null") == 0)
filename = "NUL";
#endif
/* Parse the mode. */
open_direction = 0;
open_flags = 0;
#if GNULIB_FOPEN_GNU
open_flags_gnu = false;
#endif
{
const char *p = mode;
#if GNULIB_FOPEN_GNU
char *q = fdopen_mode_buf;
#endif
for (; *p != '\0'; p++)
{
switch (*p)
{
case 'r':
open_direction = O_RDONLY;
#if GNULIB_FOPEN_GNU
if (q < fdopen_mode_buf + BUF_SIZE)
*q++ = *p;
#endif
continue;
case 'w':
open_direction = O_WRONLY;
open_flags |= O_CREAT | O_TRUNC;
#if GNULIB_FOPEN_GNU
if (q < fdopen_mode_buf + BUF_SIZE)
*q++ = *p;
#endif
continue;
case 'a':
open_direction = O_WRONLY;
open_flags |= O_CREAT | O_APPEND;
#if GNULIB_FOPEN_GNU
if (q < fdopen_mode_buf + BUF_SIZE)
*q++ = *p;
#endif
continue;
case 'b':
/* While it is non-standard, O_BINARY is guaranteed by
gnulib <fcntl.h>. We can also assume that orig_fopen
supports the 'b' flag. */
open_flags |= O_BINARY;
#if GNULIB_FOPEN_GNU
if (q < fdopen_mode_buf + BUF_SIZE)
*q++ = *p;
#endif
continue;
case '+':
open_direction = O_RDWR;
#if GNULIB_FOPEN_GNU
if (q < fdopen_mode_buf + BUF_SIZE)
*q++ = *p;
#endif
continue;
#if GNULIB_FOPEN_GNU
case 'x':
open_flags |= O_EXCL;
open_flags_gnu = true;
continue;
case 'e':
open_flags |= O_CLOEXEC;
open_flags_gnu = true;
continue;
#endif
default:
break;
}
#if GNULIB_FOPEN_GNU
/* The rest of the mode string can be a platform-dependent extension.
Copy it unmodified. */
{
size_t len = strlen (p);
if (len > fdopen_mode_buf + BUF_SIZE - q)
len = fdopen_mode_buf + BUF_SIZE - q;
memcpy (q, p, len);
q += len;
}
#endif
break;
}
#if GNULIB_FOPEN_GNU
*q = '\0';
#endif
}
#if FOPEN_TRAILING_SLASH_BUG
/* Fail if the mode requires write access and the filename ends in a slash,
as POSIX says such a filename must name a directory
<https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap04.html#tag_04_13>:
"A pathname that contains at least one non-<slash> character and that
ends with one or more trailing <slash> characters shall not be resolved
successfully unless the last pathname component before the trailing
<slash> characters names an existing directory"
If the named file already exists as a directory, then if a mode that
requires write access is specified, fopen() must fail because POSIX
<https://pubs.opengroup.org/onlinepubs/9699919799/functions/fopen.html>
says that it fails with errno = EISDIR in this case.
If the named file does not exist or does not name a directory, then
fopen() must fail since the file does not contain a '.' directory. */
{
size_t len = strlen (filename);
if (len > 0 && filename[len - 1] == '/')
{
int fd;
struct stat statbuf;
FILE *fp;
if (open_direction != O_RDONLY)
{
errno = EISDIR;
return NULL;
}
fd = open (filename, open_direction | open_flags,
S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH);
if (fd < 0)
return NULL;
if (fstat (fd, &statbuf) >= 0 && !S_ISDIR (statbuf.st_mode))
{
close (fd);
errno = ENOTDIR;
return NULL;
}
# if GNULIB_FOPEN_GNU
fp = fdopen (fd, fdopen_mode_buf);
# else
fp = fdopen (fd, mode);
# endif
if (fp == NULL)
{
int saved_errno = errno;
close (fd);
errno = saved_errno;
}
return fp;
}
}
#endif
#if GNULIB_FOPEN_GNU
if (open_flags_gnu)
{
int fd;
FILE *fp;
fd = open (filename, open_direction | open_flags,
S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH);
if (fd < 0)
return NULL;
fp = fdopen (fd, fdopen_mode_buf);
if (fp == NULL)
{
int saved_errno = errno;
close (fd);
errno = saved_errno;
}
return fp;
}
#endif
return orig_fopen (filename, mode);
}

150
gl/fpurge.c Normal file
View file

@ -0,0 +1,150 @@
/* Flushing buffers of a FILE stream.
Copyright (C) 2007-2023 Free Software Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#include <config.h>
/* Specification. */
#include <stdio.h>
#if HAVE___FPURGE /* glibc >= 2.2, Haiku, Solaris >= 7, UnixWare >= 7.1.4.MP4, Cygwin >= 1.7.10, Android API >= 23, musl libc */
# if HAVE_STDIO_EXT_H
# include <stdio_ext.h>
# endif
#endif
#include <stdlib.h>
#include "stdio-impl.h"
int
fpurge (FILE *fp)
{
#if HAVE___FPURGE /* glibc >= 2.2, Haiku, Solaris >= 7, UnixWare >= 7.1.4.MP4, Cygwin >= 1.7.10, Android API >= 23, musl libc */
__fpurge (fp);
/* The __fpurge function does not have a return value. */
return 0;
#elif HAVE_FPURGE /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin >= 1.7 */
/* Call the system's fpurge function. */
# undef fpurge
# if !HAVE_DECL_FPURGE
extern int fpurge (FILE *);
# endif
int result = fpurge (fp);
# if defined __sferror || defined __DragonFly__ || defined __ANDROID__
/* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin, Minix 3, Android */
if (result == 0)
/* Correct the invariants that fpurge broke.
<stdio.h> on BSD systems says:
"The following always hold: if _flags & __SRD, _w is 0."
If this invariant is not fulfilled and the stream is read-write but
currently reading, subsequent putc or fputc calls will write directly
into the buffer, although they shouldn't be allowed to. */
if ((fp_->_flags & __SRD) != 0)
fp_->_w = 0;
# endif
return result;
#else
/* Most systems provide FILE as a struct and the necessary bitmask in
<stdio.h>, because they need it for implementing getc() and putc() as
fast macros. */
# if defined _IO_EOF_SEEN || defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1
/* GNU libc, BeOS, Haiku, Linux libc5 */
fp->_IO_read_end = fp->_IO_read_ptr;
fp->_IO_write_ptr = fp->_IO_write_base;
/* Avoid memory leak when there is an active ungetc buffer. */
if (fp->_IO_save_base != NULL)
{
free (fp->_IO_save_base);
fp->_IO_save_base = NULL;
}
return 0;
# elif defined __sferror || defined __DragonFly__ || defined __ANDROID__
/* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin, Minix 3, Android */
fp_->_p = fp_->_bf._base;
fp_->_r = 0;
fp_->_w = ((fp_->_flags & (__SLBF | __SNBF | __SRD)) == 0 /* fully buffered and not currently reading? */
? fp_->_bf._size
: 0);
/* Avoid memory leak when there is an active ungetc buffer. */
if (fp_ub._base != NULL)
{
if (fp_ub._base != fp_->_ubuf)
free (fp_ub._base);
fp_ub._base = NULL;
}
return 0;
# elif defined __EMX__ /* emx+gcc */
fp->_ptr = fp->_buffer;
fp->_rcount = 0;
fp->_wcount = 0;
fp->_ungetc_count = 0;
return 0;
# elif defined __minix /* Minix */
fp->_ptr = fp->_buf;
if (fp->_ptr != NULL)
fp->_count = 0;
return 0;
# elif defined _IOERR /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, UnixWare, mingw, MSVC, NonStop Kernel, OpenVMS */
fp_->_ptr = fp_->_base;
if (fp_->_ptr != NULL)
fp_->_cnt = 0;
return 0;
# elif defined __UCLIBC__ /* uClibc */
# ifdef __STDIO_BUFFERS
if (fp->__modeflags & __FLAG_WRITING)
fp->__bufpos = fp->__bufstart;
else if (fp->__modeflags & (__FLAG_READONLY | __FLAG_READING))
fp->__bufpos = fp->__bufread;
# endif
return 0;
# elif defined __QNX__ /* QNX */
fp->_Rback = fp->_Back + sizeof (fp->_Back);
fp->_Rsave = NULL;
if (fp->_Mode & 0x2000 /* _MWRITE */)
/* fp->_Buf <= fp->_Next <= fp->_Wend */
fp->_Next = fp->_Buf;
else
/* fp->_Buf <= fp->_Next <= fp->_Rend */
fp->_Rend = fp->_Next;
return 0;
# elif defined __MINT__ /* Atari FreeMiNT */
if (fp->__pushed_back)
{
fp->__bufp = fp->__pushback_bufp;
fp->__pushed_back = 0;
}
/* Preserve the current file position. */
if (fp->__target != -1)
fp->__target += fp->__bufp - fp->__buffer;
fp->__bufp = fp->__buffer;
/* Nothing in the buffer, next getc is nontrivial. */
fp->__get_limit = fp->__bufp;
/* Nothing in the buffer, next putc is nontrivial. */
fp->__put_limit = fp->__buffer;
return 0;
# elif defined EPLAN9 /* Plan9 */
fp->rp = fp->wp = fp->lp = fp->buf;
return 0;
# else
# error "Please port gnulib fpurge.c to your platform! Look at the definitions of fflush, setvbuf and ungetc on your system, then report this to bug-gnulib."
# endif
#endif
}

76
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@ -0,0 +1,76 @@
/* Retrieve information about a FILE stream.
Copyright (C) 2007-2023 Free Software Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#include <config.h>
/* Specification. */
#include "freading.h"
#include "stdio-impl.h"
/* Don't use glibc's __freading function in glibc < 2.7, see
<https://sourceware.org/bugzilla/show_bug.cgi?id=4359> */
#if !(HAVE___FREADING && (!defined __GLIBC__ || defined __UCLIBC__ || __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)))
bool
freading (FILE *fp)
{
/* Most systems provide FILE as a struct and the necessary bitmask in
<stdio.h>, because they need it for implementing getc() and putc() as
fast macros. */
# if defined _IO_EOF_SEEN || defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1
/* GNU libc, BeOS, Haiku, Linux libc5 */
return ((fp->_flags & _IO_NO_WRITES) != 0
|| ((fp->_flags & (_IO_NO_READS | _IO_CURRENTLY_PUTTING)) == 0
&& fp->_IO_read_base != NULL));
# elif defined __sferror || defined __DragonFly__ || defined __ANDROID__
/* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin < 1.7.34, Minix 3, Android */
return (fp_->_flags & __SRD) != 0;
# elif defined __EMX__ /* emx+gcc */
return (fp->_flags & _IOREAD) != 0;
# elif defined __minix /* Minix */
return (fp->_flags & _IOREADING) != 0;
# elif defined _IOERR /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, UnixWare, mingw, MSVC, NonStop Kernel, OpenVMS */
# if defined __sun /* Solaris */
return (fp_->_flag & _IOREAD) != 0 && (fp_->_flag & _IOWRT) == 0;
# else
return (fp_->_flag & _IOREAD) != 0;
# endif
# elif defined __UCLIBC__ /* uClibc */
return (fp->__modeflags & (__FLAG_READONLY | __FLAG_READING)) != 0;
# elif defined __QNX__ /* QNX */
return ((fp->_Mode & 0x2 /* _MOPENW */) == 0
|| (fp->_Mode & 0x1000 /* _MREAD */) != 0);
# elif defined __MINT__ /* Atari FreeMiNT */
if (!fp->__mode.__write)
return 1;
if (!fp->__mode.__read)
return 0;
# ifdef _IO_CURRENTLY_GETTING /* Flag added on 2009-02-28 */
return (fp->__flags & _IO_CURRENTLY_GETTING) != 0;
# else
return (fp->__buffer < fp->__get_limit /*|| fp->__bufp == fp->__put_limit ??*/);
# endif
# elif defined EPLAN9 /* Plan9 */
if (fp->state == 0 /* CLOSED */ || fp->state == 4 /* WR */)
return 0;
return (fp->state == 3 /* RD */ && (fp->bufl == 0 || fp->rp < fp->wp));
# else
# error "Please port gnulib freading.c to your platform!"
# endif
}
#endif

54
gl/freading.h Normal file
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@ -0,0 +1,54 @@
/* Retrieve information about a FILE stream.
Copyright (C) 2007-2023 Free Software Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#include <stdio.h>
/* Return true if the stream STREAM is opened read-only, or if the
last operation on the stream was a read operation. Return false if
the stream is opened write-only or append-only, or if it supports
writing and there is no current read operation (such as fgetc).
freading and fwriting will never both be true. If STREAM supports
both reads and writes, then:
- both freading and fwriting might be false when the stream is first
opened, after read encounters EOF, or after fflush,
- freading might be false or true and fwriting might be false
after repositioning (such as fseek, fsetpos, or rewind),
depending on the underlying implementation.
STREAM must not be wide-character oriented. */
#if HAVE___FREADING && (!defined __GLIBC__ || defined __UCLIBC__ || __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
/* Solaris >= 7, UnixWare >= 7.1.4.MP4, Cygwin >= 1.7.34, Android API >= 29, not glibc >= 2.2, but glibc >= 2.7, or musl libc */
# if HAVE_STDIO_EXT_H
# include <stdio_ext.h>
# endif
# define freading(stream) (__freading (stream) != 0)
#else
# ifdef __cplusplus
extern "C" {
# endif
extern bool freading (FILE *stream) _GL_ATTRIBUTE_PURE;
# ifdef __cplusplus
}
# endif
#endif

53
gl/free.c Normal file
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@ -0,0 +1,53 @@
/* Make free() preserve errno.
Copyright (C) 2003, 2006, 2009-2023 Free Software Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* written by Paul Eggert */
#include <config.h>
/* Specification. */
#include <stdlib.h>
/* A function definition is only needed if HAVE_FREE_POSIX is not defined. */
#if !HAVE_FREE_POSIX
# include <errno.h>
void
rpl_free (void *p)
# undef free
{
# if defined __GNUC__ && !defined __clang__
/* An invalid GCC optimization
<https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98396>
would optimize away the assignments in the code below, when link-time
optimization (LTO) is enabled. Make the code more complicated, so that
GCC does not grok how to optimize it. */
int err[2];
err[0] = errno;
err[1] = errno;
errno = 0;
free (p);
errno = err[errno == 0];
# else
int err = errno;
free (p);
errno = err;
# endif
}
#endif

30
gl/fseek.c Normal file
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@ -0,0 +1,30 @@
/* An fseek() function that, together with fflush(), is POSIX compliant.
Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#include <config.h>
/* Specification. */
#include <stdio.h>
/* Get off_t. */
#include <unistd.h>
int
fseek (FILE *fp, long offset, int whence)
{
/* Use the replacement fseeko function with all its workarounds. */
return fseeko (fp, (off_t)offset, whence);
}

164
gl/fseeko.c Normal file
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@ -0,0 +1,164 @@
/* An fseeko() function that, together with fflush(), is POSIX compliant.
Copyright (C) 2007-2023 Free Software Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#include <config.h>
/* Specification. */
#include <stdio.h>
/* Get off_t, lseek, _POSIX_VERSION. */
#include <unistd.h>
#include "stdio-impl.h"
int
fseeko (FILE *fp, off_t offset, int whence)
#undef fseeko
#if !HAVE_FSEEKO
# undef fseek
# define fseeko fseek
#endif
#if _GL_WINDOWS_64_BIT_OFF_T
# undef fseeko
# if HAVE__FSEEKI64 && HAVE_DECL__FSEEKI64 /* msvc, mingw since msvcrt8.0, mingw64 */
# define fseeko _fseeki64
# else /* mingw before msvcrt8.0 */
# define fseeko fseeko64
# endif
#endif
{
#if LSEEK_PIPE_BROKEN
/* mingw gives bogus answers rather than failure on non-seekable files. */
if (lseek (fileno (fp), 0, SEEK_CUR) == -1)
return EOF;
#endif
/* These tests are based on fpurge.c. */
#if defined _IO_EOF_SEEN || defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1
/* GNU libc, BeOS, Haiku, Linux libc5 */
if (fp->_IO_read_end == fp->_IO_read_ptr
&& fp->_IO_write_ptr == fp->_IO_write_base
&& fp->_IO_save_base == NULL)
#elif defined __sferror || defined __DragonFly__ || defined __ANDROID__
/* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin, Minix 3, Android */
# if defined __SL64 && defined __SCLE /* Cygwin */
if ((fp->_flags & __SL64) == 0)
{
/* Cygwin 1.5.0 through 1.5.24 failed to open stdin in 64-bit
mode; but has an fseeko that requires 64-bit mode. */
FILE *tmp = fopen ("/dev/null", "r");
if (!tmp)
return -1;
fp->_flags |= __SL64;
fp->_seek64 = tmp->_seek64;
fclose (tmp);
}
# endif
if (fp_->_p == fp_->_bf._base
&& fp_->_r == 0
&& fp_->_w == ((fp_->_flags & (__SLBF | __SNBF | __SRD)) == 0 /* fully buffered and not currently reading? */
? fp_->_bf._size
: 0)
&& fp_ub._base == NULL)
#elif defined __EMX__ /* emx+gcc */
if (fp->_ptr == fp->_buffer
&& fp->_rcount == 0
&& fp->_wcount == 0
&& fp->_ungetc_count == 0)
#elif defined __minix /* Minix */
if (fp_->_ptr == fp_->_buf
&& (fp_->_ptr == NULL || fp_->_count == 0))
#elif defined _IOERR /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, UnixWare, mingw, MSVC, NonStop Kernel, OpenVMS */
if (fp_->_ptr == fp_->_base
&& (fp_->_ptr == NULL || fp_->_cnt == 0))
#elif defined __UCLIBC__ /* uClibc */
if (((fp->__modeflags & __FLAG_WRITING) == 0
|| fp->__bufpos == fp->__bufstart)
&& ((fp->__modeflags & (__FLAG_READONLY | __FLAG_READING)) == 0
|| fp->__bufpos == fp->__bufread))
#elif defined __QNX__ /* QNX */
if ((fp->_Mode & 0x2000 /* _MWRITE */ ? fp->_Next == fp->_Buf : fp->_Next == fp->_Rend)
&& fp->_Rback == fp->_Back + sizeof (fp->_Back)
&& fp->_Rsave == NULL)
#elif defined __MINT__ /* Atari FreeMiNT */
if (fp->__bufp == fp->__buffer
&& fp->__get_limit == fp->__bufp
&& fp->__put_limit == fp->__bufp
&& !fp->__pushed_back)
#elif defined EPLAN9 /* Plan9 */
if (fp->rp == fp->buf
&& fp->wp == fp->buf)
#elif FUNC_FFLUSH_STDIN < 0 && 200809 <= _POSIX_VERSION
/* Cross-compiling to some other system advertising conformance to
POSIX.1-2008 or later. Assume fseeko and fflush work as advertised.
If this assumption is incorrect, please report the bug to
bug-gnulib. */
if (0)
#else
#error "Please port gnulib fseeko.c to your platform! Look at the code in fseeko.c, then report this to bug-gnulib."
#endif
{
/* We get here when an fflush() call immediately preceded this one (or
if ftell() has created buffers but no I/O has occurred on a
newly-opened stream). We know there are no buffers. */
off_t pos = lseek (fileno (fp), offset, whence);
if (pos == -1)
{
#if defined __sferror || defined __DragonFly__ || defined __ANDROID__
/* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin, Minix 3, Android */
fp_->_flags &= ~__SOFF;
#endif
return -1;
}
#if defined _IO_EOF_SEEN || defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1
/* GNU libc, BeOS, Haiku, Linux libc5 */
fp->_flags &= ~_IO_EOF_SEEN;
fp->_offset = pos;
#elif defined __sferror || defined __DragonFly__ || defined __ANDROID__
/* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin, Minix 3, Android */
# if defined __CYGWIN__ || (defined __NetBSD__ && __NetBSD_Version__ >= 600000000) || defined __minix
/* fp_->_offset is typed as an integer. */
fp_->_offset = pos;
# else
/* fp_->_offset is an fpos_t. */
{
/* Use a union, since on NetBSD, the compilation flags
determine whether fpos_t is typedef'd to off_t or a struct
containing a single off_t member. */
union
{
fpos_t f;
off_t o;
} u;
u.o = pos;
fp_->_offset = u.f;
}
# endif
fp_->_flags |= __SOFF;
fp_->_flags &= ~__SEOF;
#elif defined __EMX__ /* emx+gcc */
fp->_flags &= ~_IOEOF;
#elif defined _IOERR /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, UnixWare, mingw, MSVC, NonStop Kernel, OpenVMS */
fp_->_flag &= ~_IOEOF;
#elif defined __MINT__ /* Atari FreeMiNT */
fp->__offset = pos;
fp->__eof = 0;
#endif
return 0;
}
return fseeko (fp, offset, whence);
}

94
gl/fstat.c Normal file
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@ -0,0 +1,94 @@
/* fstat() replacement.
Copyright (C) 2011-2023 Free Software Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* If the user's config.h happens to include <sys/stat.h>, let it include only
the system's <sys/stat.h> here, so that orig_fstat doesn't recurse to
rpl_fstat. */
#define __need_system_sys_stat_h
#include <config.h>
/* Get the original definition of fstat. It might be defined as a macro. */
#include <sys/types.h>
#include <sys/stat.h>
#undef __need_system_sys_stat_h
#if defined _WIN32 && ! defined __CYGWIN__
# define WINDOWS_NATIVE
#endif
#if !defined WINDOWS_NATIVE
static int
orig_fstat (int fd, struct stat *buf)
{
return fstat (fd, buf);
}
#endif
/* Specification. */
#ifdef __osf__
/* Write "sys/stat.h" here, not <sys/stat.h>, otherwise OSF/1 5.1 DTK cc
eliminates this include because of the preliminary #include <sys/stat.h>
above. */
# include "sys/stat.h"
#else
# include <sys/stat.h>
#endif
#include "stat-time.h"
#include <errno.h>
#include <unistd.h>
#ifdef WINDOWS_NATIVE
# define WIN32_LEAN_AND_MEAN
# include <windows.h>
# if GNULIB_MSVC_NOTHROW
# include "msvc-nothrow.h"
# else
# include <io.h>
# endif
# include "stat-w32.h"
#endif
int
rpl_fstat (int fd, struct stat *buf)
{
#if REPLACE_FCHDIR && REPLACE_OPEN_DIRECTORY
/* Handle the case when rpl_open() used a dummy file descriptor to work
around an open() that can't normally visit directories. */
const char *name = _gl_directory_name (fd);
if (name != NULL)
return stat (name, buf);
#endif
#ifdef WINDOWS_NATIVE
/* Fill the fields ourselves, because the original fstat function returns
values for st_atime, st_mtime, st_ctime that depend on the current time
zone. See
<https://lists.gnu.org/r/bug-gnulib/2017-04/msg00134.html> */
HANDLE h = (HANDLE) _get_osfhandle (fd);
if (h == INVALID_HANDLE_VALUE)
{
errno = EBADF;
return -1;
}
return _gl_fstat_by_handle (h, NULL, buf);
#else
return stat_time_normalize (orig_fstat (fd, buf), buf);
#endif
}

123
gl/fsusage.c
View file

@ -1,20 +1,20 @@
/* fsusage.c -- return space usage of mounted file systems
Copyright (C) 1991-1992, 1996, 1998-1999, 2002-2006, 2009-2013 Free Software
Copyright (C) 1991-1992, 1996, 1998-1999, 2002-2006, 2009-2023 Free Software
Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
GNU Lesser General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#include <config.h>
@ -43,23 +43,11 @@
# if HAVE_SYS_FS_S5PARAM_H /* Fujitsu UXP/V */
# include <sys/fs/s5param.h>
# endif
# if defined HAVE_SYS_FILSYS_H && !defined _CRAY
# include <sys/filsys.h> /* SVR2 */
# endif
# if HAVE_SYS_STATFS_H
# include <sys/statfs.h>
# endif
# if HAVE_DUSTAT_H /* AIX PS/2 */
# include <sys/dustat.h>
# endif
# include "full-read.h"
#endif
/* The results of open() in this file are not used with fchdir,
therefore save some unnecessary work in fchdir.c. */
#undef open
#undef close
/* Many space usage primitives use all 1 bits to denote a value that is
not applicable or unknown. Propagate this information by returning
a uintmax_t value that is all 1 bits if X is all 1 bits, even if X
@ -143,7 +131,6 @@ get_fs_usage (char const *file, char const *disk, struct fs_usage *fsp)
fsp->fsu_bavail_top_bit_set = EXTRACT_TOP_BIT (vfsd.f_bavail) != 0;
fsp->fsu_files = PROPAGATE_ALL_ONES (vfsd.f_files);
fsp->fsu_ffree = PROPAGATE_ALL_ONES (vfsd.f_ffree);
fsp->fsu_favail = PROPAGATE_ALL_ONES (vfsd.f_favail);
return 0;
}
@ -161,58 +148,6 @@ get_fs_usage (char const *file, char const *disk, struct fs_usage *fsp)
? PROPAGATE_ALL_ONES (fsd.f_frsize)
: PROPAGATE_ALL_ONES (fsd.f_bsize));
#elif defined STAT_STATFS2_FS_DATA /* Ultrix */
struct fs_data fsd;
if (statfs (file, &fsd) != 1)
return -1;
fsp->fsu_blocksize = 1024;
fsp->fsu_blocks = PROPAGATE_ALL_ONES (fsd.fd_req.btot);
fsp->fsu_bfree = PROPAGATE_ALL_ONES (fsd.fd_req.bfree);
fsp->fsu_bavail = PROPAGATE_TOP_BIT (fsd.fd_req.bfreen);
fsp->fsu_bavail_top_bit_set = EXTRACT_TOP_BIT (fsd.fd_req.bfreen) != 0;
fsp->fsu_files = PROPAGATE_ALL_ONES (fsd.fd_req.gtot);
fsp->fsu_ffree = PROPAGATE_ALL_ONES (fsd.fd_req.gfree);
fsp->fsu_favail = PROPAGATE_ALL_ONES (fsd.fd_req.gfree);
#elif defined STAT_READ_FILSYS /* SVR2 */
# ifndef SUPERBOFF
# define SUPERBOFF (SUPERB * 512)
# endif
struct filsys fsd;
int fd;
if (! disk)
{
errno = 0;
return -1;
}
fd = open (disk, O_RDONLY);
if (fd < 0)
return -1;
lseek (fd, (off_t) SUPERBOFF, 0);
if (full_read (fd, (char *) &fsd, sizeof fsd) != sizeof fsd)
{
close (fd);
return -1;
}
close (fd);
fsp->fsu_blocksize = (fsd.s_type == Fs2b ? 1024 : 512);
fsp->fsu_blocks = PROPAGATE_ALL_ONES (fsd.s_fsize);
fsp->fsu_bfree = PROPAGATE_ALL_ONES (fsd.s_tfree);
fsp->fsu_bavail = PROPAGATE_TOP_BIT (fsd.s_tfree);
fsp->fsu_bavail_top_bit_set = EXTRACT_TOP_BIT (fsd.s_tfree) != 0;
fsp->fsu_files = (fsd.s_isize == -1
? UINTMAX_MAX
: (fsd.s_isize - 2) * INOPB * (fsd.s_type == Fs2b ? 2 : 1));
fsp->fsu_ffree = PROPAGATE_ALL_ONES (fsd.s_tinode);
fsp->fsu_favail = PROPAGATE_ALL_ONES (fsd.s_tinode);
#elif defined STAT_STATFS3_OSF1 /* OSF/1 */
struct statfs fsd;
@ -266,12 +201,7 @@ get_fs_usage (char const *file, char const *disk, struct fs_usage *fsp)
fsp->fsu_blocksize = PROPAGATE_ALL_ONES (fsd.f_fsize);
#elif defined STAT_STATFS4 /* SVR3, Dynix, old Irix, old AIX, \
Dolphin */
# if !_AIX && !defined _SEQUENT_ && !defined DOLPHIN
# define f_bavail f_bfree
# endif
#elif defined STAT_STATFS4 /* SVR3, old Irix */
struct statfs fsd;
@ -281,11 +211,7 @@ get_fs_usage (char const *file, char const *disk, struct fs_usage *fsp)
/* Empirically, the block counts on most SVR3 and SVR3-derived
systems seem to always be in terms of 512-byte blocks,
no matter what value f_bsize has. */
# if _AIX || defined _CRAY
fsp->fsu_blocksize = PROPAGATE_ALL_ONES (fsd.f_bsize);
# else
fsp->fsu_blocksize = 512;
# endif
#endif
@ -299,38 +225,9 @@ get_fs_usage (char const *file, char const *disk, struct fs_usage *fsp)
fsp->fsu_bavail_top_bit_set = EXTRACT_TOP_BIT (fsd.f_bavail) != 0;
fsp->fsu_files = PROPAGATE_ALL_ONES (fsd.f_files);
fsp->fsu_ffree = PROPAGATE_ALL_ONES (fsd.f_ffree);
fsp->fsu_favail = PROPAGATE_ALL_ONES (fsd.f_ffree);
#endif
(void) disk; /* avoid argument-unused warning */
return 0;
}
#if defined _AIX && defined _I386
/* AIX PS/2 does not supply statfs. */
int
statfs (char *file, struct statfs *fsb)
{
struct stat stats;
struct dustat fsd;
if (stat (file, &stats) != 0)
return -1;
if (dustat (stats.st_dev, 0, &fsd, sizeof (fsd)))
return -1;
fsb->f_type = 0;
fsb->f_bsize = fsd.du_bsize;
fsb->f_blocks = fsd.du_fsize - fsd.du_isize;
fsb->f_bfree = fsd.du_tfree;
fsb->f_bavail = fsd.du_tfree;
fsb->f_files = (fsd.du_isize - 2) * fsd.du_inopb;
fsb->f_ffree = fsd.du_tinode;
fsb->f_favail = fsd.du_tinode;
fsb->f_fsid.val[0] = fsd.du_site;
fsb->f_fsid.val[1] = fsd.du_pckno;
return 0;
}
#endif /* _AIX && _I386 */

22
gl/fsusage.h
View file

@ -1,20 +1,20 @@
/* fsusage.h -- declarations for file system space usage info
Copyright (C) 1991-1992, 1997, 2003-2006, 2009-2013 Free Software
Copyright (C) 1991-1992, 1997, 2003-2006, 2009-2023 Free Software
Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
GNU Lesser General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Space usage statistics for a file system. Blocks are 512-byte. */
@ -22,7 +22,6 @@
# define FSUSAGE_H_
# include <stdint.h>
# include <stdbool.h>
struct fs_usage
{
@ -32,8 +31,7 @@ struct fs_usage
uintmax_t fsu_bavail; /* Free blocks available to non-superuser. */
bool fsu_bavail_top_bit_set; /* 1 if fsu_bavail represents a value < 0. */
uintmax_t fsu_files; /* Total file nodes. */
uintmax_t fsu_ffree; /* Free file nodes to superuser. */
uintmax_t fsu_favail; /* Free file nodes to non-superuser. */
uintmax_t fsu_ffree; /* Free file nodes. */
};
int get_fs_usage (char const *file, char const *disk, struct fs_usage *fsp);

37
gl/ftell.c Normal file
View file

@ -0,0 +1,37 @@
/* An ftell() function that works around platform bugs.
Copyright (C) 2007-2023 Free Software Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#include <config.h>
/* Specification. */
#include <stdio.h>
#include <errno.h>
#include <limits.h>
long
ftell (FILE *fp)
{
/* Use the replacement ftello function with all its workarounds. */
off_t offset = ftello (fp);
if (LONG_MIN <= offset && offset <= LONG_MAX)
return /* (long) */ offset;
else
{
errno = EOVERFLOW;
return -1;
}
}

157
gl/ftello.c Normal file
View file

@ -0,0 +1,157 @@
/* An ftello() function that works around platform bugs.
Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#include <config.h>
/* Specification. */
#include <stdio.h>
#include <errno.h>
#include "intprops.h"
/* Get lseek. */
#include <unistd.h>
#include "stdio-impl.h"
off_t
ftello (FILE *fp)
#undef ftello
#if !HAVE_FTELLO
# undef ftell
# define ftello ftell
#endif
#if _GL_WINDOWS_64_BIT_OFF_T
# undef ftello
# if HAVE__FTELLI64 /* msvc, mingw64 */
# define ftello _ftelli64
# else /* mingw */
# define ftello ftello64
# endif
#endif
{
#if FTELLO_BROKEN_AFTER_UNGETC /* macOS >= 10.15 */
/* The system's ftello() is completely broken, because it calls __sflush,
which makes side effects on the stream. */
/* Handle non-seekable files first. */
if (fp->_file < 0 || fp->_seek == NULL)
{
errno = ESPIPE;
return -1;
}
/* Determine the current offset, ignoring buffered and pushed-back bytes. */
off_t pos;
if (fp->_flags & __SOFF)
pos = fp->_offset;
else
{
pos = fp->_seek (fp->_cookie, 0, SEEK_CUR);
if (pos < 0)
return -1;
if (fp->_flags & __SOPT)
{
fp->_offset = pos;
fp->_flags |= __SOFF;
}
}
if (fp->_flags & __SRD)
{
/* Now consider buffered and pushed-back bytes from ungetc. */
if (fp->_ub._base != NULL)
/* Considering the buffered bytes, we are at position
pos - fp->_ur.
Considering also the pushed-back bytes, we are at position
pos - fp->_ur - fp->_r. */
pos = pos - fp->_ur - fp->_r;
else
/* Considering the buffered bytes, we are at position
pos - fp->_r. */
pos = pos - fp->_r;
if (pos < 0)
{
errno = EIO;
return -1;
}
}
else if ((fp->_flags & __SWR) && fp->_p != NULL)
{
/* Consider the buffered bytes. */
off_t buffered = fp->_p - fp->_bf._base;
/* Compute pos + buffered, with overflow check. */
off_t sum;
if (! INT_ADD_OK (pos, buffered, &sum))
{
errno = EOVERFLOW;
return -1;
}
pos = sum;
}
return pos;
#else
# if LSEEK_PIPE_BROKEN
/* mingw gives bogus answers rather than failure on non-seekable files. */
if (lseek (fileno (fp), 0, SEEK_CUR) == -1)
return -1;
# endif
# if FTELLO_BROKEN_AFTER_SWITCHING_FROM_READ_TO_WRITE /* Solaris */
/* The Solaris stdio leaves the _IOREAD flag set after reading from a file
reaches EOF and the program then starts writing to the file. ftello
gets confused by this. */
if (fp_->_flag & _IOWRT)
{
off_t pos;
/* Call ftello nevertheless, for the side effects that it does on fp. */
ftello (fp);
/* Compute the file position ourselves. */
pos = lseek (fileno (fp), (off_t) 0, SEEK_CUR);
if (pos >= 0)
{
if ((fp_->_flag & _IONBF) == 0 && fp_->_base != NULL)
pos += fp_->_ptr - fp_->_base;
}
return pos;
}
# endif
# if defined __SL64 && defined __SCLE /* Cygwin */
if ((fp->_flags & __SL64) == 0)
{
/* Cygwin 1.5.0 through 1.5.24 failed to open stdin in 64-bit
mode; but has an ftello that requires 64-bit mode. */
FILE *tmp = fopen ("/dev/null", "r");
if (!tmp)
return -1;
fp->_flags |= __SL64;
fp->_seek64 = tmp->_seek64;
fclose (tmp);
}
# endif
return ftello (fp);
#endif
}

18
gl/full-read.c
View file

@ -1,18 +0,0 @@
/* An interface to read that retries after partial reads and interrupts.
Copyright (C) 2002-2003, 2009-2013 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#define FULL_READ
#include "full-write.c"

24
gl/full-read.h
View file

@ -1,24 +0,0 @@
/* An interface to read() that reads all it is asked to read.
Copyright (C) 2002, 2009-2013 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, read to the Free Software Foundation,
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include <stddef.h>
/* Read COUNT bytes at BUF to descriptor FD, retrying if interrupted
or if partial reads occur. Return the number of bytes successfully
read, setting errno if that is less than COUNT. errno = 0 means EOF. */
extern size_t full_read (int fd, void *buf, size_t count);

79
gl/full-write.c
View file

@ -1,79 +0,0 @@
/* An interface to read and write that retries (if necessary) until complete.
Copyright (C) 1993-1994, 1997-2006, 2009-2013 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include <config.h>
/* Specification. */
#ifdef FULL_READ
# include "full-read.h"
#else
# include "full-write.h"
#endif
#include <errno.h>
#ifdef FULL_READ
# include "safe-read.h"
# define safe_rw safe_read
# define full_rw full_read
# undef const
# define const /* empty */
#else
# include "safe-write.h"
# define safe_rw safe_write
# define full_rw full_write
#endif
#ifdef FULL_READ
/* Set errno to zero upon EOF. */
# define ZERO_BYTE_TRANSFER_ERRNO 0
#else
/* Some buggy drivers return 0 when one tries to write beyond
a device's end. (Example: Linux 1.2.13 on /dev/fd0.)
Set errno to ENOSPC so they get a sensible diagnostic. */
# define ZERO_BYTE_TRANSFER_ERRNO ENOSPC
#endif
/* Write(read) COUNT bytes at BUF to(from) descriptor FD, retrying if
interrupted or if a partial write(read) occurs. Return the number
of bytes transferred.
When writing, set errno if fewer than COUNT bytes are written.
When reading, if fewer than COUNT bytes are read, you must examine
errno to distinguish failure from EOF (errno == 0). */
size_t
full_rw (int fd, const void *buf, size_t count)
{
size_t total = 0;
const char *ptr = (const char *) buf;
while (count > 0)
{
size_t n_rw = safe_rw (fd, ptr, count);
if (n_rw == (size_t) -1)
break;
if (n_rw == 0)
{
errno = ZERO_BYTE_TRANSFER_ERRNO;
break;
}
total += n_rw;
ptr += n_rw;
count -= n_rw;
}
return total;
}

18
gl/gai_strerror.c
View file

@ -1,20 +1,20 @@
/* Copyright (C) 1997, 2001-2002, 2004-2006, 2008-2013 Free Software
/* Copyright (C) 1997, 2001-2002, 2004-2006, 2008-2023 Free Software
Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Philip Blundell <pjb27@cam.ac.uk>, 1997.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
GNU Lesser General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, see <http://www.gnu.org/licenses/>. */
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#ifndef _LIBC
# include <config.h>

180
gl/getaddrinfo.c
View file

@ -1,19 +1,19 @@
/* Get address information (partial implementation).
Copyright (C) 1997, 2001-2002, 2004-2013 Free Software Foundation, Inc.
Copyright (C) 1997, 2001-2002, 2004-2023 Free Software Foundation, Inc.
Contributed by Simon Josefsson <simon@josefsson.org>.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
GNU Lesser General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, see <http://www.gnu.org/licenses/>. */
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Don't use __attribute__ __nonnull__ in this compilation unit. Otherwise gcc
optimizes away the sa == NULL test below. */
@ -39,8 +39,6 @@
/* Get snprintf. */
#include <stdio.h>
#include <stdbool.h>
#include "gettext.h"
#define _(String) gettext (String)
#define N_(String) String
@ -54,14 +52,48 @@
# define PF_UNSPEC 0
#endif
#if defined _WIN32 || defined __WIN32__
# define WINDOWS_NATIVE
#endif
#if HAVE_GETADDRINFO
/* Override with cdecl calling convention. */
int
getaddrinfo (const char *restrict nodename,
const char *restrict servname,
const struct addrinfo *restrict hints,
struct addrinfo **restrict res)
# undef getaddrinfo
{
return getaddrinfo (nodename, servname, hints, res);
}
void
freeaddrinfo (struct addrinfo *ai)
# undef freeaddrinfo
{
freeaddrinfo (ai);
}
#else
# if defined _WIN32 && !defined __CYGWIN__
# define WINDOWS_NATIVE
# endif
/* gl_sockets_startup */
#include "sockets.h"
# include "sockets.h"
# ifdef WINDOWS_NATIVE
/* Don't assume that UNICODE is not defined. */
# undef GetModuleHandle
# define GetModuleHandle GetModuleHandleA
# if !(_WIN32_WINNT >= _WIN32_WINNT_WINXP)
/* Avoid warnings from gcc -Wcast-function-type. */
# define GetProcAddress \
(void *) GetProcAddress
#ifdef WINDOWS_NATIVE
typedef int (WSAAPI *getaddrinfo_func) (const char*, const char*,
const struct addrinfo*,
struct addrinfo**);
@ -107,20 +139,43 @@ use_win32_p (void)
return 1;
}
#endif
# else
static int
use_win32_p (void)
{
static int done = 0;
if (!done)
{
done = 1;
gl_sockets_startup (SOCKETS_1_1);
}
return 1;
}
# define getaddrinfo_ptr getaddrinfo
# define freeaddrinfo_ptr freeaddrinfo
# define getnameinfo_ptr getnameinfo
# endif
# endif
static bool
validate_family (int family)
{
/* FIXME: Support more families. */
#if HAVE_IPV4
# if HAVE_IPV4
if (family == PF_INET)
return true;
#endif
#if HAVE_IPV6
# endif
# if HAVE_IPV6
if (family == PF_INET6)
return true;
#endif
# endif
if (family == PF_UNSPEC)
return true;
return false;
@ -133,29 +188,30 @@ getaddrinfo (const char *restrict nodename,
const char *restrict servname,
const struct addrinfo *restrict hints,
struct addrinfo **restrict res)
#undef getaddrinfo
{
struct addrinfo *tmp;
int port = 0;
struct hostent *he;
void *storage;
size_t size;
#if HAVE_IPV6
# if HAVE_IPV6
struct v6_pair {
struct addrinfo addrinfo;
struct sockaddr_in6 sockaddr_in6;
};
#endif
#if HAVE_IPV4
# endif
# if HAVE_IPV4
struct v4_pair {
struct addrinfo addrinfo;
struct sockaddr_in sockaddr_in;
};
#endif
# endif
#ifdef WINDOWS_NATIVE
# ifdef WINDOWS_NATIVE
if (use_win32_p ())
return getaddrinfo_ptr (nodename, servname, hints, res);
#endif
# endif
if (hints && (hints->ai_flags & ~(AI_CANONNAME|AI_PASSIVE)))
/* FIXME: Support more flags. */
@ -174,11 +230,11 @@ getaddrinfo (const char *restrict nodename,
if (!(hints->ai_flags & AI_PASSIVE))
return EAI_NONAME;
#ifdef HAVE_IPV6
# ifdef HAVE_IPV6
nodename = (hints->ai_family == AF_INET6) ? "::" : "0.0.0.0";
#else
# else
nodename = "0.0.0.0";
#endif
# endif
}
if (servname)
@ -212,17 +268,17 @@ getaddrinfo (const char *restrict nodename,
switch (he->h_addrtype)
{
#if HAVE_IPV6
# if HAVE_IPV6
case PF_INET6:
size = sizeof (struct v6_pair);
break;
#endif
# endif
#if HAVE_IPV4
# if HAVE_IPV4
case PF_INET:
size = sizeof (struct v4_pair);
break;
#endif
# endif
default:
return EAI_NODATA;
@ -234,7 +290,7 @@ getaddrinfo (const char *restrict nodename,
switch (he->h_addrtype)
{
#if HAVE_IPV6
# if HAVE_IPV6
case PF_INET6:
{
struct v6_pair *p = storage;
@ -256,9 +312,9 @@ getaddrinfo (const char *restrict nodename,
tmp->ai_addrlen = sizeof *sinp;
}
break;
#endif
# endif
#if HAVE_IPV4
# if HAVE_IPV4
case PF_INET:
{
struct v4_pair *p = storage;
@ -280,7 +336,7 @@ getaddrinfo (const char *restrict nodename,
tmp->ai_addrlen = sizeof *sinp;
}
break;
#endif
# endif
default:
free (storage);
@ -308,21 +364,21 @@ getaddrinfo (const char *restrict nodename,
tmp->ai_addr->sa_family = he->h_addrtype;
tmp->ai_family = he->h_addrtype;
#ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
# ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
switch (he->h_addrtype)
{
#if HAVE_IPV4
# if HAVE_IPV4
case AF_INET:
tmp->ai_addr->sa_len = sizeof (struct sockaddr_in);
break;
#endif
#if HAVE_IPV6
# endif
# if HAVE_IPV6
case AF_INET6:
tmp->ai_addr->sa_len = sizeof (struct sockaddr_in6);
break;
#endif
# endif
}
#endif
# endif
/* FIXME: If more than one address, create linked list of addrinfo's. */
@ -334,14 +390,15 @@ getaddrinfo (const char *restrict nodename,
/* Free 'addrinfo' structure AI including associated storage. */
void
freeaddrinfo (struct addrinfo *ai)
#undef freeaddrinfo
{
#ifdef WINDOWS_NATIVE
# ifdef WINDOWS_NATIVE
if (use_win32_p ())
{
freeaddrinfo_ptr (ai);
return;
}
#endif
# endif
while (ai)
{
@ -360,12 +417,13 @@ getnameinfo (const struct sockaddr *restrict sa, socklen_t salen,
char *restrict node, socklen_t nodelen,
char *restrict service, socklen_t servicelen,
int flags)
#undef getnameinfo
{
#ifdef WINDOWS_NATIVE
# ifdef WINDOWS_NATIVE
if (use_win32_p ())
return getnameinfo_ptr (sa, salen, node, nodelen,
service, servicelen, flags);
#endif
# endif
/* FIXME: Support other flags. */
if ((node && nodelen > 0 && !(flags & NI_NUMERICHOST)) ||
@ -378,18 +436,18 @@ getnameinfo (const struct sockaddr *restrict sa, socklen_t salen,
switch (sa->sa_family)
{
#if HAVE_IPV4
# if HAVE_IPV4
case AF_INET:
if (salen < sizeof (struct sockaddr_in))
return EAI_FAMILY;
break;
#endif
#if HAVE_IPV6
# endif
# if HAVE_IPV6
case AF_INET6:
if (salen < sizeof (struct sockaddr_in6))
return EAI_FAMILY;
break;
#endif
# endif
default:
return EAI_FAMILY;
}
@ -398,23 +456,23 @@ getnameinfo (const struct sockaddr *restrict sa, socklen_t salen,
{
switch (sa->sa_family)
{
#if HAVE_IPV4
# if HAVE_IPV4
case AF_INET:
if (!inet_ntop (AF_INET,
&(((const struct sockaddr_in *) sa)->sin_addr),
node, nodelen))
return EAI_SYSTEM;
break;
#endif
# endif
#if HAVE_IPV6
# if HAVE_IPV6
case AF_INET6:
if (!inet_ntop (AF_INET6,
&(((const struct sockaddr_in6 *) sa)->sin6_addr),
node, nodelen))
return EAI_SYSTEM;
break;
#endif
# endif
default:
return EAI_FAMILY;
@ -424,12 +482,12 @@ getnameinfo (const struct sockaddr *restrict sa, socklen_t salen,
if (service && servicelen > 0 && flags & NI_NUMERICSERV)
switch (sa->sa_family)
{
#if HAVE_IPV4
# if HAVE_IPV4
case AF_INET:
#endif
#if HAVE_IPV6
# endif
# if HAVE_IPV6
case AF_INET6:
#endif
# endif
{
unsigned short int port
= ntohs (((const struct sockaddr_in *) sa)->sin_port);
@ -441,3 +499,5 @@ getnameinfo (const struct sockaddr *restrict sa, socklen_t salen,
return 0;
}
#endif

147
gl/getdelim.c Normal file
View file

@ -0,0 +1,147 @@
/* getdelim.c --- Implementation of replacement getdelim function.
Copyright (C) 1994, 1996-1998, 2001, 2003, 2005-2023 Free Software
Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Ported from glibc by Simon Josefsson. */
/* Don't use __attribute__ __nonnull__ in this compilation unit. Otherwise gcc
optimizes away the lineptr == NULL || n == NULL || fp == NULL tests below. */
#define _GL_ARG_NONNULL(params)
#include <config.h>
#include <stdio.h>
#include <limits.h>
#include <stdint.h>
#include <stdlib.h>
#include <errno.h>
#ifndef SSIZE_MAX
# define SSIZE_MAX ((ssize_t) (SIZE_MAX / 2))
#endif
#if USE_UNLOCKED_IO
# include "unlocked-io.h"
# define getc_maybe_unlocked(fp) getc(fp)
#elif !HAVE_FLOCKFILE || !HAVE_FUNLOCKFILE || !HAVE_DECL_GETC_UNLOCKED
# undef flockfile
# undef funlockfile
# define flockfile(x) ((void) 0)
# define funlockfile(x) ((void) 0)
# define getc_maybe_unlocked(fp) getc(fp)
#else
# define getc_maybe_unlocked(fp) getc_unlocked(fp)
#endif
static void
alloc_failed (void)
{
#if defined _WIN32 && ! defined __CYGWIN__
/* Avoid errno problem without using the realloc module; see:
https://lists.gnu.org/r/bug-gnulib/2016-08/msg00025.html */
errno = ENOMEM;
#endif
}
/* Read up to (and including) a DELIMITER from FP into *LINEPTR (and
NUL-terminate it). *LINEPTR is a pointer returned from malloc (or
NULL), pointing to *N characters of space. It is realloc'ed as
necessary. Returns the number of characters read (not including
the null terminator), or -1 on error or EOF. */
ssize_t
getdelim (char **lineptr, size_t *n, int delimiter, FILE *fp)
{
ssize_t result;
size_t cur_len = 0;
if (lineptr == NULL || n == NULL || fp == NULL)
{
errno = EINVAL;
return -1;
}
flockfile (fp);
if (*lineptr == NULL || *n == 0)
{
char *new_lineptr;
*n = 120;
new_lineptr = (char *) realloc (*lineptr, *n);
if (new_lineptr == NULL)
{
alloc_failed ();
result = -1;
goto unlock_return;
}
*lineptr = new_lineptr;
}
for (;;)
{
int i;
i = getc_maybe_unlocked (fp);
if (i == EOF)
{
result = -1;
break;
}
/* Make enough space for len+1 (for final NUL) bytes. */
if (cur_len + 1 >= *n)
{
size_t needed_max =
SSIZE_MAX < SIZE_MAX ? (size_t) SSIZE_MAX + 1 : SIZE_MAX;
size_t needed = 2 * *n + 1; /* Be generous. */
char *new_lineptr;
if (needed_max < needed)
needed = needed_max;
if (cur_len + 1 >= needed)
{
result = -1;
errno = EOVERFLOW;
goto unlock_return;
}
new_lineptr = (char *) realloc (*lineptr, needed);
if (new_lineptr == NULL)
{
alloc_failed ();
result = -1;
goto unlock_return;
}
*lineptr = new_lineptr;
*n = needed;
}
(*lineptr)[cur_len] = i;
cur_len++;
if (i == delimiter)
break;
}
(*lineptr)[cur_len] = '\0';
result = cur_len ? cur_len : result;
unlock_return:
funlockfile (fp); /* doesn't set errno */
return result;
}

124
gl/getdtablesize.c Normal file
View file

@ -0,0 +1,124 @@
/* getdtablesize() function: Return maximum possible file descriptor value + 1.
Copyright (C) 2008-2023 Free Software Foundation, Inc.
Written by Bruno Haible <bruno@clisp.org>, 2008.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#include <config.h>
/* Specification. */
#include <unistd.h>
#if defined _WIN32 && ! defined __CYGWIN__
# include <stdio.h>
# if HAVE_MSVC_INVALID_PARAMETER_HANDLER
# include "msvc-inval.h"
# endif
# if HAVE_MSVC_INVALID_PARAMETER_HANDLER
static int
_setmaxstdio_nothrow (int newmax)
{
int result;
TRY_MSVC_INVAL
{
result = _setmaxstdio (newmax);
}
CATCH_MSVC_INVAL
{
result = -1;
}
DONE_MSVC_INVAL;
return result;
}
# else
# define _setmaxstdio_nothrow _setmaxstdio
# endif
/* Cache for the previous getdtablesize () result. Safe to cache because
Windows also lacks setrlimit. */
static int dtablesize;
int
getdtablesize (void)
{
if (dtablesize == 0)
{
/* We are looking for the number N such that the valid file descriptors
are 0..N-1. It can be obtained through a loop as follows:
{
int fd;
for (fd = 3; fd < 65536; fd++)
if (dup2 (0, fd) == -1)
break;
return fd;
}
On Windows XP, the result is 2048.
The drawback of this loop is that it allocates memory for a libc
internal array that is never freed.
The number N can also be obtained as the upper bound for
_getmaxstdio (). _getmaxstdio () returns the maximum number of open
FILE objects. The sanity check in _setmaxstdio reveals the maximum
number of file descriptors. This too allocates memory, but it is
freed when we call _setmaxstdio with the original value. */
int orig_max_stdio = _getmaxstdio ();
unsigned int bound;
for (bound = 0x10000; _setmaxstdio_nothrow (bound) < 0; bound = bound / 2)
;
_setmaxstdio_nothrow (orig_max_stdio);
dtablesize = bound;
}
return dtablesize;
}
#else
# include <limits.h>
# include <sys/resource.h>
# ifndef RLIM_SAVED_CUR
# define RLIM_SAVED_CUR RLIM_INFINITY
# endif
# ifndef RLIM_SAVED_MAX
# define RLIM_SAVED_MAX RLIM_INFINITY
# endif
# ifdef __CYGWIN__
/* Cygwin 1.7.25 auto-increases the RLIMIT_NOFILE soft limit until it
hits the compile-time constant hard limit of 3200. We might as
well just report the hard limit. */
# define rlim_cur rlim_max
# endif
int
getdtablesize (void)
{
struct rlimit lim;
if (getrlimit (RLIMIT_NOFILE, &lim) == 0
&& 0 <= lim.rlim_cur && lim.rlim_cur <= INT_MAX
&& lim.rlim_cur != RLIM_INFINITY
&& lim.rlim_cur != RLIM_SAVED_CUR
&& lim.rlim_cur != RLIM_SAVED_MAX)
return lim.rlim_cur;
return INT_MAX;
}
#endif

20
gl/gethostname.c
View file

@ -1,26 +1,26 @@
/* gethostname emulation for SysV and POSIX.1.
Copyright (C) 1992, 2003, 2006, 2008-2013 Free Software Foundation, Inc.
Copyright (C) 1992, 2003, 2006, 2008-2023 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
GNU Lesser General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* David MacKenzie <djm@gnu.ai.mit.edu>
Windows port by Simon Josefsson <simon@josefsson.org> */
#include <config.h>
#if !((defined _WIN32 || defined __WIN32__) && !defined __CYGWIN__)
#if !(defined _WIN32 && !defined __CYGWIN__)
/* Unix API. */
/* Specification. */

27
gl/getline.c Normal file
View file

@ -0,0 +1,27 @@
/* getline.c --- Implementation of replacement getline function.
Copyright (C) 2005-2007, 2009-2023 Free Software Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by Simon Josefsson. */
#include <config.h>
#include <stdio.h>
ssize_t
getline (char **lineptr, size_t *n, FILE *stream)
{
return getdelim (lineptr, n, '\n', stream);
}

179
gl/getloadavg.c
View file

@ -1,6 +1,6 @@
/* Get the system load averages.
Copyright (C) 1985-1989, 1991-1995, 1997, 1999-2000, 2003-2013 Free Software
Copyright (C) 1985-1989, 1991-1995, 1997, 1999-2000, 2003-2023 Free Software
Foundation, Inc.
NOTE: The canonical source of this file is maintained with gnulib.
@ -8,7 +8,7 @@
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
@ -17,7 +17,7 @@
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Compile-time symbols that this file uses:
@ -47,29 +47,25 @@
N_NAME_POINTER The nlist n_name element is a pointer,
not an array.
HAVE_STRUCT_NLIST_N_UN_N_NAME 'n_un.n_name' is member of 'struct nlist'.
LINUX_LDAV_FILE [__linux__, __CYGWIN__]: File containing
load averages.
LINUX_LDAV_FILE [__linux__, __ANDROID__, __CYGWIN__]: File
containing load averages.
Specific system predefines this file uses, aside from setting
default values if not emacs:
apollo
BSD Real BSD, not just BSD-like.
convex
DGUX
eunice UNIX emulator under VMS.
hpux
__MSDOS__ No-op for MSDOS.
NeXT
sgi
sequent Sequent Dynix 3.x.x (BSD)
_SEQUENT_ Sequent DYNIX/ptx 1.x.x (SYSV)
sony_news NEWS-OS (works at least for 4.1C)
UMAX
UMAX4_3
VMS
WINDOWS32 No-op for Windows95/NT.
__linux__ Linux: assumes /proc file system mounted.
_WIN32 Native Windows (possibly also defined on Cygwin)
__linux__, __ANDROID__ Linux: assumes /proc file system mounted.
Support from Michael K. Johnson.
__CYGWIN__ Cygwin emulates linux /proc/loadavg.
__NetBSD__ NetBSD: assumes /kern file system mounted.
@ -86,7 +82,6 @@
#include <stdlib.h>
#include <errno.h>
#include <stdbool.h>
#include <stdio.h>
# include <sys/types.h>
@ -97,9 +92,8 @@
# include "intprops.h"
# if !defined (BSD) && defined (ultrix)
/* Ultrix behaves like BSD on Vaxen. */
# define BSD
# if defined _WIN32 && ! defined __CYGWIN__ && ! defined WINDOWS32
# define WINDOWS32
# endif
# ifdef NeXT
@ -141,10 +135,6 @@
# define MORE_BSD
# endif
# if defined (ultrix) && defined (mips)
# define decstation
# endif
# if defined (__SVR4) && !defined (SVR4)
# define SVR4
# endif
@ -168,13 +158,6 @@
# include <sys/table.h>
# endif
/* UTek's /bin/cc on the 4300 has no architecture specific cpp define by
default, but _MACH_IND_SYS_TYPES is defined in <sys/types.h>. Combine
that with a couple of other things and we'll have a unique match. */
# if !defined (tek4300) && defined (unix) && defined (m68k) && defined (mc68000) && defined (mc68020) && defined (_MACH_IND_SYS_TYPES)
# define tek4300 /* Define by emacs, but not by other users. */
# endif
/* VAX C can't handle multi-line #ifs, or lines longer than 256 chars. */
# ifndef LOAD_AVE_TYPE
@ -187,14 +170,6 @@
# define LOAD_AVE_TYPE long
# endif
# ifdef decstation
# define LOAD_AVE_TYPE long
# endif
# ifdef _SEQUENT_
# define LOAD_AVE_TYPE long
# endif
# ifdef sgi
# define LOAD_AVE_TYPE long
# endif
@ -203,41 +178,14 @@
# define LOAD_AVE_TYPE long
# endif
# ifdef sony_news
# define LOAD_AVE_TYPE long
# endif
# ifdef sequent
# define LOAD_AVE_TYPE long
# endif
# ifdef OSF_ALPHA
# define LOAD_AVE_TYPE long
# endif
# if defined (ardent) && defined (titan)
# define LOAD_AVE_TYPE long
# endif
# ifdef tek4300
# define LOAD_AVE_TYPE long
# endif
# if defined (alliant) && defined (i860) /* Alliant FX/2800 */
# define LOAD_AVE_TYPE long
# endif
# if defined _AIX && ! defined HAVE_LIBPERFSTAT
# define LOAD_AVE_TYPE long
# endif
# ifdef convex
# define LOAD_AVE_TYPE double
# ifndef LDAV_CVT
# define LDAV_CVT(n) (n)
# endif
# endif
# endif /* No LOAD_AVE_TYPE. */
# ifdef OSF_ALPHA
@ -247,13 +195,6 @@
# define FSCALE 1024.0
# endif
# if defined (alliant) && defined (i860) /* Alliant FX/2800 */
/* <sys/param.h> defines an incorrect value for FSCALE on an
Alliant FX/2800 Concentrix 2.2, according to ghazi@noc.rutgers.edu. */
# undef FSCALE
# define FSCALE 100.0
# endif
# ifndef FSCALE
@ -263,25 +204,17 @@
# define FSCALE 2048.0
# endif
# if defined (MIPS) || defined (SVR4) || defined (decstation)
# if defined (MIPS) || defined (SVR4)
# define FSCALE 256
# endif
# if defined (sgi) || defined (sequent)
# if defined (sgi)
/* Sometimes both MIPS and sgi are defined, so FSCALE was just defined
above under #ifdef MIPS. But we want the sgi value. */
# undef FSCALE
# define FSCALE 1000.0
# endif
# if defined (ardent) && defined (titan)
# define FSCALE 65536.0
# endif
# ifdef tek4300
# define FSCALE 100.0
# endif
# if defined _AIX && !defined HAVE_LIBPERFSTAT
# define FSCALE 65536.0
# endif
@ -303,28 +236,22 @@
# endif
# if !defined (KERNEL_FILE) && defined (sequent)
# define KERNEL_FILE "/dynix"
# endif
# if !defined (KERNEL_FILE) && defined (hpux)
# define KERNEL_FILE "/hp-ux"
# endif
# if !defined (KERNEL_FILE) && (defined (_SEQUENT_) || defined (MIPS) || defined (SVR4) || defined (ISC) || defined (sgi) || (defined (ardent) && defined (titan)))
# if !defined (KERNEL_FILE) && (defined (MIPS) || defined (SVR4) || defined (ISC) || defined (sgi))
# define KERNEL_FILE "/unix"
# endif
# if !defined (LDAV_SYMBOL) && defined (alliant)
# define LDAV_SYMBOL "_Loadavg"
# endif
# if !defined (LDAV_SYMBOL) && ((defined (hpux) && !defined (hp9000s300)) || defined (_SEQUENT_) || defined (SVR4) || defined (ISC) || defined (sgi) || (defined (ardent) && defined (titan)) || (defined (_AIX) && !defined(HAVE_LIBPERFSTAT)))
# if !defined (LDAV_SYMBOL) && (defined (hpux) || defined (SVR4) || defined (ISC) || defined (sgi) || (defined (_AIX) && !defined(HAVE_LIBPERFSTAT)))
# define LDAV_SYMBOL "avenrun"
# endif
# include <unistd.h>
# ifdef HAVE_UNISTD_H
# include <unistd.h>
# endif
/* LOAD_AVE_TYPE should only get defined if we're going to use the
nlist method. */
@ -335,7 +262,7 @@
# ifdef LOAD_AVE_TYPE
# ifndef __VMS
# ifndef __linux__
# if !(defined __linux__ || defined __ANDROID__)
# ifndef NLIST_STRUCT
# include <a.out.h>
# else /* NLIST_STRUCT */
@ -358,7 +285,7 @@
# ifndef LDAV_SYMBOL
# define LDAV_SYMBOL "_avenrun"
# endif /* LDAV_SYMBOL */
# endif /* __linux__ */
# endif /* __linux__ || __ANDROID__ */
# else /* __VMS */
@ -431,7 +358,8 @@
# include <sys/dg_sys_info.h>
# endif
# if (defined __linux__ || defined __CYGWIN__ || defined SUNOS_5 \
# if (defined __linux__ || defined __ANDROID__ \
|| defined __CYGWIN__ || defined SUNOS_5 \
|| (defined LOAD_AVE_TYPE && ! defined __VMS))
# include <fcntl.h>
# endif
@ -460,7 +388,7 @@ static bool getloadavg_initialized;
/* Offset in kmem to seek to read load average, or 0 means invalid. */
static long offset;
# if ! defined __VMS && ! defined sgi && ! defined __linux__
# if ! defined __VMS && ! defined sgi && ! (defined __linux__ || defined __ANDROID__)
static struct nlist name_list[2];
# endif
@ -495,17 +423,17 @@ getloadavg (double loadavg[], int nelem)
int saved_errno;
kc = kstat_open ();
if (kc == 0)
if (kc == NULL)
return -1;
ksp = kstat_lookup (kc, "unix", 0, "system_misc");
if (ksp == 0)
if (ksp == NULL)
return -1;
if (kstat_read (kc, ksp, 0) == -1)
return -1;
kn = kstat_data_lookup (ksp, "avenrun_1min");
if (kn == 0)
if (kn == NULL)
{
/* Return -1 if no load average information is available. */
nelem = 0;
@ -518,14 +446,14 @@ getloadavg (double loadavg[], int nelem)
if (nelem >= 2)
{
kn = kstat_data_lookup (ksp, "avenrun_5min");
if (kn != 0)
if (kn != NULL)
{
loadavg[elem++] = (double) kn->value.ul / FSCALE;
if (nelem >= 3)
{
kn = kstat_data_lookup (ksp, "avenrun_15min");
if (kn != 0)
if (kn != NULL)
loadavg[elem++] = (double) kn->value.ul / FSCALE;
}
}
@ -570,8 +498,8 @@ getloadavg (double loadavg[], int nelem)
}
# endif
# if !defined (LDAV_DONE) && (defined (__linux__) || defined (__CYGWIN__))
/* Linux without glibc, Cygwin */
# if !defined (LDAV_DONE) && (defined __linux__ || defined __ANDROID__ || defined __CYGWIN__)
/* Linux without glibc, Android, Cygwin */
# define LDAV_DONE
# undef LOAD_AVE_TYPE
@ -583,7 +511,7 @@ getloadavg (double loadavg[], int nelem)
char const *ptr = ldavgbuf;
int fd, count, saved_errno;
fd = open (LINUX_LDAV_FILE, O_RDONLY);
fd = open (LINUX_LDAV_FILE, O_RDONLY | O_CLOEXEC);
if (fd == -1)
return -1;
count = read (fd, ldavgbuf, sizeof ldavgbuf - 1);
@ -621,12 +549,12 @@ getloadavg (double loadavg[], int nelem)
for (ptr++; '0' <= *ptr && *ptr <= '9'; ptr++)
numerator = 10 * numerator + (*ptr - '0'), denominator *= 10;
loadavg[elem++] = numerator / denominator;
loadavg[elem] = numerator / denominator;
}
return elem;
# endif /* __linux__ || __CYGWIN__ */
# endif /* __linux__ || __ANDROID__ || __CYGWIN__ */
# if !defined (LDAV_DONE) && defined (__NetBSD__) /* NetBSD < 0.9 */
# define LDAV_DONE
@ -638,15 +566,22 @@ getloadavg (double loadavg[], int nelem)
unsigned long int load_ave[3], scale;
int count;
FILE *fp;
fp = fopen (NETBSD_LDAV_FILE, "r");
if (fp == NULL)
return -1;
count = fscanf (fp, "%lu %lu %lu %lu\n",
char readbuf[4 * INT_BUFSIZE_BOUND (unsigned long int) + 1];
int fd = open (NETBSD_LDAV_FILE, O_RDONLY | O_CLOEXEC);
if (fd < 0)
return fd;
int nread = read (fd, readbuf, sizeof readbuf - 1);
int err = errno;
close (fd);
if (nread < 0)
{
errno = err;
return -1;
}
readbuf[nread] = '\0';
count = sscanf (readbuf, "%lu %lu %lu %lu\n",
&load_ave[0], &load_ave[1], &load_ave[2],
&scale);
(void) fclose (fp);
if (count != 4)
{
errno = ENOTSUP;
@ -915,7 +850,7 @@ getloadavg (double loadavg[], int nelem)
# ifndef SUNOS_5
if (
# if !(defined (_AIX) && !defined (ps2))
# if !defined (_AIX)
nlist (KERNEL_FILE, name_list)
# else /* _AIX */
knlist (name_list, 1, sizeof (name_list[0]))
@ -940,33 +875,17 @@ getloadavg (double loadavg[], int nelem)
if (!getloadavg_initialized)
{
# ifndef SUNOS_5
/* Set the channel to close on exec, so it does not
litter any child's descriptor table. */
# ifndef O_CLOEXEC
# define O_CLOEXEC 0
# endif
int fd = open ("/dev/kmem", O_RDONLY | O_CLOEXEC);
if (0 <= fd)
{
# if F_DUPFD_CLOEXEC
if (fd <= STDERR_FILENO)
{
int fd1 = fcntl (fd, F_DUPFD_CLOEXEC, STDERR_FILENO + 1);
close (fd);
fd = fd1;
}
# endif
if (0 <= fd)
{
channel = fd;
getloadavg_initialized = true;
}
channel = fd;
getloadavg_initialized = true;
}
# else /* SUNOS_5 */
/* We pass 0 for the kernel, corefile, and swapfile names
to use the currently running kernel. */
kd = kvm_open (0, 0, 0, O_RDONLY, 0);
if (kd != 0)
if (kd != NULL)
{
/* nlist the currently running kernel. */
kvm_nlist (kd, name_list);

66
gl/getopt-cdefs.in.h Normal file
View file

@ -0,0 +1,66 @@
/* getopt-on-non-glibc compatibility macros.
Copyright (C) 1989-2023 Free Software Foundation, Inc.
This file is part of gnulib.
Unlike most of the getopt implementation, it is NOT shared
with the GNU C Library.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#ifndef _GETOPT_CDEFS_H
#define _GETOPT_CDEFS_H 1
/* This header should not be used directly; include getopt.h or
unistd.h instead. It does not have a protective #error, because
the guard macro for getopt.h in gnulib is not fixed. */
/* getopt-core.h and getopt-ext.h are shared with GNU libc, and expect
a number of the internal macros supplied to GNU libc's headers by
sys/cdefs.h. Provide fallback definitions for all of them. */
#if @HAVE_SYS_CDEFS_H@
# include <sys/cdefs.h>
#endif
#ifndef __BEGIN_DECLS
# ifdef __cplusplus
# define __BEGIN_DECLS extern "C" {
# else
# define __BEGIN_DECLS /* nothing */
# endif
#endif
#ifndef __END_DECLS
# ifdef __cplusplus
# define __END_DECLS }
# else
# define __END_DECLS /* nothing */
# endif
#endif
#ifndef __GNUC_PREREQ
# if defined __GNUC__ && defined __GNUC_VERSION__
# define __GNUC_PREREQ(maj, min) \
((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
# else
# define __GNUC_PREREQ(maj, min) 0
# endif
#endif
#ifndef __THROW
# if defined __cplusplus && (__GNUC_PREREQ (2,8) || __clang_major__ >= 4)
# define __THROW throw ()
# else
# define __THROW
# endif
#endif
#endif /* _GETOPT_CDEFS_H */

96
gl/getopt-core.h Normal file
View file

@ -0,0 +1,96 @@
/* Declarations for getopt (basic, portable features only).
Copyright (C) 1989-2023 Free Software Foundation, Inc.
This file is part of the GNU C Library and is also part of gnulib.
Patches to this file should be submitted to both projects.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#ifndef _GETOPT_CORE_H
#define _GETOPT_CORE_H 1
/* This header should not be used directly; include getopt.h or
unistd.h instead. Unlike most bits headers, it does not have
a protective #error, because the guard macro for getopt.h in
gnulib is not fixed. */
__BEGIN_DECLS
/* For communication from 'getopt' to the caller.
When 'getopt' finds an option that takes an argument,
the argument value is returned here.
Also, when 'ordering' is RETURN_IN_ORDER,
each non-option ARGV-element is returned here. */
extern char *optarg;
/* Index in ARGV of the next element to be scanned.
This is used for communication to and from the caller
and for communication between successive calls to 'getopt'.
On entry to 'getopt', zero means this is the first call; initialize.
When 'getopt' returns -1, this is the index of the first of the
non-option elements that the caller should itself scan.
Otherwise, 'optind' communicates from one call to the next
how much of ARGV has been scanned so far. */
extern int optind;
/* Callers store zero here to inhibit the error message 'getopt' prints
for unrecognized options. */
extern int opterr;
/* Set to an option character which was unrecognized. */
extern int optopt;
/* Get definitions and prototypes for functions to process the
arguments in ARGV (ARGC of them, minus the program name) for
options given in OPTS.
Return the option character from OPTS just read. Return -1 when
there are no more options. For unrecognized options, or options
missing arguments, 'optopt' is set to the option letter, and '?' is
returned.
The OPTS string is a list of characters which are recognized option
letters, optionally followed by colons, specifying that that letter
takes an argument, to be placed in 'optarg'.
If a letter in OPTS is followed by two colons, its argument is
optional. This behavior is specific to the GNU 'getopt'.
The argument '--' causes premature termination of argument
scanning, explicitly telling 'getopt' that there are no more
options.
If OPTS begins with '-', then non-option arguments are treated as
arguments to the option '\1'. This behavior is specific to the GNU
'getopt'. If OPTS begins with '+', or POSIXLY_CORRECT is set in
the environment, then do not permute arguments.
For standards compliance, the 'argv' argument has the type
char *const *, but this is inaccurate; if argument permutation is
enabled, the argv array (not the strings it points to) must be
writable. */
extern int getopt (int ___argc, char *const *___argv, const char *__shortopts)
__THROW _GL_ARG_NONNULL ((2, 3));
__END_DECLS
#endif /* _GETOPT_CORE_H */

77
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@ -0,0 +1,77 @@
/* Declarations for getopt (GNU extensions).
Copyright (C) 1989-2023 Free Software Foundation, Inc.
This file is part of the GNU C Library and is also part of gnulib.
Patches to this file should be submitted to both projects.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#ifndef _GETOPT_EXT_H
#define _GETOPT_EXT_H 1
/* This header should not be used directly; include getopt.h instead.
Unlike most bits headers, it does not have a protective #error,
because the guard macro for getopt.h in gnulib is not fixed. */
__BEGIN_DECLS
/* Describe the long-named options requested by the application.
The LONG_OPTIONS argument to getopt_long or getopt_long_only is a vector
of 'struct option' terminated by an element containing a name which is
zero.
The field 'has_arg' is:
no_argument (or 0) if the option does not take an argument,
required_argument (or 1) if the option requires an argument,
optional_argument (or 2) if the option takes an optional argument.
If the field 'flag' is not NULL, it points to a variable that is set
to the value given in the field 'val' when the option is found, but
left unchanged if the option is not found.
To have a long-named option do something other than set an 'int' to
a compiled-in constant, such as set a value from 'optarg', set the
option's 'flag' field to zero and its 'val' field to a nonzero
value (the equivalent single-letter option character, if there is
one). For long options that have a zero 'flag' field, 'getopt'
returns the contents of the 'val' field. */
struct option
{
const char *name;
/* has_arg can't be an enum because some compilers complain about
type mismatches in all the code that assumes it is an int. */
int has_arg;
int *flag;
int val;
};
/* Names for the values of the 'has_arg' field of 'struct option'. */
#define no_argument 0
#define required_argument 1
#define optional_argument 2
extern int getopt_long (int ___argc, char *__getopt_argv_const *___argv,
const char *__shortopts,
const struct option *__longopts, int *__longind)
__THROW _GL_ARG_NONNULL ((2, 3));
extern int getopt_long_only (int ___argc, char *__getopt_argv_const *___argv,
const char *__shortopts,
const struct option *__longopts, int *__longind)
__THROW _GL_ARG_NONNULL ((2, 3));
__END_DECLS
#endif /* _GETOPT_EXT_H */

66
gl/getopt-pfx-core.h Normal file
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@ -0,0 +1,66 @@
/* getopt (basic, portable features) gnulib wrapper header.
Copyright (C) 1989-2023 Free Software Foundation, Inc.
This file is part of gnulib.
Unlike most of the getopt implementation, it is NOT shared
with the GNU C Library.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#ifndef _GETOPT_PFX_CORE_H
#define _GETOPT_PFX_CORE_H 1
/* This header should not be used directly; include getopt.h or
unistd.h instead. It does not have a protective #error, because
the guard macro for getopt.h in gnulib is not fixed. */
/* Standalone applications should #define __GETOPT_PREFIX to an
identifier that prefixes the external functions and variables
defined in getopt-core.h and getopt-ext.h. Systematically
rename identifiers so that they do not collide with the system
functions and variables. Renaming avoids problems with some
compilers and linkers. */
#ifdef __GETOPT_PREFIX
# ifndef __GETOPT_ID
# define __GETOPT_CONCAT(x, y) x ## y
# define __GETOPT_XCONCAT(x, y) __GETOPT_CONCAT (x, y)
# define __GETOPT_ID(y) __GETOPT_XCONCAT (__GETOPT_PREFIX, y)
# endif
# undef getopt
# undef optarg
# undef opterr
# undef optind
# undef optopt
# define getopt __GETOPT_ID (getopt)
# define optarg __GETOPT_ID (optarg)
# define opterr __GETOPT_ID (opterr)
# define optind __GETOPT_ID (optind)
# define optopt __GETOPT_ID (optopt)
/* Work around a a problem on macOS, which declares getopt with a
trailing __DARWIN_ALIAS(getopt) that would expand to something like
__asm("_" "rpl_getopt" "$UNIX2003") were it not for the following
hack to suppress the macOS declaration <https://bugs.gnu.org/40205>. */
# ifdef __APPLE__
# define _GETOPT
# endif
/* The system's getopt.h may have already included getopt-core.h to
declare the unprefixed identifiers. Undef _GETOPT_CORE_H so that
getopt-core.h declares them with prefixes. */
# undef _GETOPT_CORE_H
#endif
#include <getopt-core.h>
#endif /* _GETOPT_PFX_CORE_H */

70
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@ -0,0 +1,70 @@
/* getopt (GNU extensions) gnulib wrapper header.
Copyright (C) 1989-2023 Free Software Foundation, Inc.
This file is part of gnulib.
Unlike most of the getopt implementation, it is NOT shared
with the GNU C Library.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#ifndef _GETOPT_PFX_EXT_H
#define _GETOPT_PFX_EXT_H 1
/* This header should not be used directly; include getopt.h instead.
It does not have a protective #error, because the guard macro for
getopt.h in gnulib is not fixed. */
/* Standalone applications should #define __GETOPT_PREFIX to an
identifier that prefixes the external functions and variables
defined in getopt-core.h and getopt-ext.h. Systematically
rename identifiers so that they do not collide with the system
functions and variables. Renaming avoids problems with some
compilers and linkers. */
#ifdef __GETOPT_PREFIX
# ifndef __GETOPT_ID
# define __GETOPT_CONCAT(x, y) x ## y
# define __GETOPT_XCONCAT(x, y) __GETOPT_CONCAT (x, y)
# define __GETOPT_ID(y) __GETOPT_XCONCAT (__GETOPT_PREFIX, y)
# endif
# undef getopt_long
# undef getopt_long_only
# undef option
# undef _getopt_internal
# define getopt_long __GETOPT_ID (getopt_long)
# define getopt_long_only __GETOPT_ID (getopt_long_only)
# define option __GETOPT_ID (option)
# define _getopt_internal __GETOPT_ID (getopt_internal)
/* The system's getopt.h may have already included getopt-ext.h to
declare the unprefixed identifiers. Undef _GETOPT_EXT_H so that
getopt-ext.h declares them with prefixes. */
# undef _GETOPT_EXT_H
#endif
/* Standalone applications get correct prototypes for getopt_long and
getopt_long_only; they declare "char **argv". For backward
compatibility with old applications, if __GETOPT_PREFIX is not
defined, we supply GNU-libc-compatible, but incorrect, prototypes
using "char *const *argv". (GNU libc is stuck with the incorrect
prototypes, as they are baked into older versions of LSB.) */
#ifndef __getopt_argv_const
# if defined __GETOPT_PREFIX
# define __getopt_argv_const /* empty */
# else
# define __getopt_argv_const const
# endif
#endif
#include <getopt-ext.h>
#endif /* _GETOPT_PFX_EXT_H */

1408
gl/getopt.c
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File diff suppressed because it is too large Load diff

238
gl/getopt.in.h
View file

@ -1,20 +1,22 @@
/* Declarations for getopt.
Copyright (C) 1989-1994, 1996-1999, 2001, 2003-2007, 2009-2013 Free Software
Foundation, Inc.
This file is part of the GNU C Library.
Copyright (C) 1989-2023 Free Software Foundation, Inc.
This file is part of gnulib.
Unlike most of the getopt implementation, it is NOT shared
with the GNU C Library, which supplies a different version of
this file.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
GNU Lesser General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#ifndef _@GUARD_PREFIX@_GETOPT_H
@ -32,22 +34,15 @@
# undef _GL_SYSTEM_GETOPT
#endif
#ifndef _@GUARD_PREFIX@_GETOPT_H
#ifndef __need_getopt
# define _@GUARD_PREFIX@_GETOPT_H 1
#endif
#define _@GUARD_PREFIX@_GETOPT_H 1
/* Standalone applications should #define __GETOPT_PREFIX to an
identifier that prefixes the external functions and variables
defined in this header. When this happens, include the
headers that might declare getopt so that they will not cause
confusion if included after this file (if the system had <getopt.h>,
we have already included it). Then systematically rename
identifiers so that they do not collide with the system functions
and variables. Renaming avoids problems with some compilers and
linkers. */
#if defined __GETOPT_PREFIX && !defined __need_getopt
defined in getopt-core.h and getopt-ext.h. When this happens,
include the headers that might declare getopt so that they will not
cause confusion if included after this file (if the system had
<getopt.h>, we have already included it). */
#if defined __GETOPT_PREFIX
# if !@HAVE_GETOPT_H@
# define __need_system_stdlib_h
# include <stdlib.h>
@ -55,201 +50,12 @@
# include <stdio.h>
# include <unistd.h>
# endif
# undef __need_getopt
# undef getopt
# undef getopt_long
# undef getopt_long_only
# undef optarg
# undef opterr
# undef optind
# undef optopt
# undef option
# define __GETOPT_CONCAT(x, y) x ## y
# define __GETOPT_XCONCAT(x, y) __GETOPT_CONCAT (x, y)
# define __GETOPT_ID(y) __GETOPT_XCONCAT (__GETOPT_PREFIX, y)
# define getopt __GETOPT_ID (getopt)
# define getopt_long __GETOPT_ID (getopt_long)
# define getopt_long_only __GETOPT_ID (getopt_long_only)
# define optarg __GETOPT_ID (optarg)
# define opterr __GETOPT_ID (opterr)
# define optind __GETOPT_ID (optind)
# define optopt __GETOPT_ID (optopt)
# define option __GETOPT_ID (option)
# define _getopt_internal __GETOPT_ID (getopt_internal)
#endif
/* Standalone applications get correct prototypes for getopt_long and
getopt_long_only; they declare "char **argv". libc uses prototypes
with "char *const *argv" that are incorrect because getopt_long and
getopt_long_only can permute argv; this is required for backward
compatibility (e.g., for LSB 2.0.1).
This used to be '#if defined __GETOPT_PREFIX && !defined __need_getopt',
but it caused redefinition warnings if both unistd.h and getopt.h were
included, since unistd.h includes getopt.h having previously defined
__need_getopt.
The only place where __getopt_argv_const is used is in definitions
of getopt_long and getopt_long_only below, but these are visible
only if __need_getopt is not defined, so it is quite safe to rewrite
the conditional as follows:
*/
#if !defined __need_getopt
# if defined __GETOPT_PREFIX
# define __getopt_argv_const /* empty */
# else
# define __getopt_argv_const const
# endif
#endif
/* If __GNU_LIBRARY__ is not already defined, either we are being used
standalone, or this is the first header included in the source file.
If we are being used with glibc, we need to include <features.h>, but
that does not exist if we are standalone. So: if __GNU_LIBRARY__ is
not defined, include <ctype.h>, which will pull in <features.h> for us
if it's from glibc. (Why ctype.h? It's guaranteed to exist and it
doesn't flood the namespace with stuff the way some other headers do.) */
#if !defined __GNU_LIBRARY__
# include <ctype.h>
#endif
#ifndef __THROW
# ifndef __GNUC_PREREQ
# define __GNUC_PREREQ(maj, min) (0)
# endif
# if defined __cplusplus && __GNUC_PREREQ (2,8)
# define __THROW throw ()
# else
# define __THROW
# endif
#endif
/* The definition of _GL_ARG_NONNULL is copied here. */
#ifdef __cplusplus
extern "C" {
#endif
/* For communication from 'getopt' to the caller.
When 'getopt' finds an option that takes an argument,
the argument value is returned here.
Also, when 'ordering' is RETURN_IN_ORDER,
each non-option ARGV-element is returned here. */
extern char *optarg;
/* Index in ARGV of the next element to be scanned.
This is used for communication to and from the caller
and for communication between successive calls to 'getopt'.
On entry to 'getopt', zero means this is the first call; initialize.
When 'getopt' returns -1, this is the index of the first of the
non-option elements that the caller should itself scan.
Otherwise, 'optind' communicates from one call to the next
how much of ARGV has been scanned so far. */
extern int optind;
/* Callers store zero here to inhibit the error message 'getopt' prints
for unrecognized options. */
extern int opterr;
/* Set to an option character which was unrecognized. */
extern int optopt;
#ifndef __need_getopt
/* Describe the long-named options requested by the application.
The LONG_OPTIONS argument to getopt_long or getopt_long_only is a vector
of 'struct option' terminated by an element containing a name which is
zero.
The field 'has_arg' is:
no_argument (or 0) if the option does not take an argument,
required_argument (or 1) if the option requires an argument,
optional_argument (or 2) if the option takes an optional argument.
If the field 'flag' is not NULL, it points to a variable that is set
to the value given in the field 'val' when the option is found, but
left unchanged if the option is not found.
To have a long-named option do something other than set an 'int' to
a compiled-in constant, such as set a value from 'optarg', set the
option's 'flag' field to zero and its 'val' field to a nonzero
value (the equivalent single-letter option character, if there is
one). For long options that have a zero 'flag' field, 'getopt'
returns the contents of the 'val' field. */
# if !GNULIB_defined_struct_option
struct option
{
const char *name;
/* has_arg can't be an enum because some compilers complain about
type mismatches in all the code that assumes it is an int. */
int has_arg;
int *flag;
int val;
};
# define GNULIB_defined_struct_option 1
# endif
/* Names for the values of the 'has_arg' field of 'struct option'. */
# define no_argument 0
# define required_argument 1
# define optional_argument 2
#endif /* need getopt */
/* Get definitions and prototypes for functions to process the
arguments in ARGV (ARGC of them, minus the program name) for
options given in OPTS.
Return the option character from OPTS just read. Return -1 when
there are no more options. For unrecognized options, or options
missing arguments, 'optopt' is set to the option letter, and '?' is
returned.
The OPTS string is a list of characters which are recognized option
letters, optionally followed by colons, specifying that that letter
takes an argument, to be placed in 'optarg'.
If a letter in OPTS is followed by two colons, its argument is
optional. This behavior is specific to the GNU 'getopt'.
The argument '--' causes premature termination of argument
scanning, explicitly telling 'getopt' that there are no more
options.
If OPTS begins with '-', then non-option arguments are treated as
arguments to the option '\1'. This behavior is specific to the GNU
'getopt'. If OPTS begins with '+', or POSIXLY_CORRECT is set in
the environment, then do not permute arguments. */
extern int getopt (int ___argc, char *const *___argv, const char *__shortopts)
__THROW _GL_ARG_NONNULL ((2, 3));
#ifndef __need_getopt
extern int getopt_long (int ___argc, char *__getopt_argv_const *___argv,
const char *__shortopts,
const struct option *__longopts, int *__longind)
__THROW _GL_ARG_NONNULL ((2, 3));
extern int getopt_long_only (int ___argc, char *__getopt_argv_const *___argv,
const char *__shortopts,
const struct option *__longopts, int *__longind)
__THROW _GL_ARG_NONNULL ((2, 3));
#endif
#ifdef __cplusplus
}
#endif
/* Make sure we later can get all the definitions and declarations. */
#undef __need_getopt
#include <getopt-cdefs.h>
#include <getopt-pfx-core.h>
#include <getopt-pfx-ext.h>
#endif /* _@GUARD_PREFIX@_GETOPT_H */
#endif /* _@GUARD_PREFIX@_GETOPT_H */

165
gl/getopt1.c
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@ -1,56 +1,44 @@
/* getopt_long and getopt_long_only entry points for GNU getopt.
Copyright (C) 1987-1994, 1996-1998, 2004, 2006, 2009-2013 Free Software
Foundation, Inc.
This file is part of the GNU C Library.
Copyright (C) 1987-2023 Free Software Foundation, Inc.
This file is part of the GNU C Library and is also part of gnulib.
Patches to this file should be submitted to both projects.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#ifdef _LIBC
# include <getopt.h>
#else
#ifndef _LIBC
# include <config.h>
# include "getopt.h"
#endif
#include "getopt.h"
#include "getopt_int.h"
#include <stdio.h>
/* This needs to come after some library #include
to get __GNU_LIBRARY__ defined. */
#ifdef __GNU_LIBRARY__
#include <stdlib.h>
#endif
#ifndef NULL
#define NULL 0
#endif
int
getopt_long (int argc, char *__getopt_argv_const *argv, const char *options,
const struct option *long_options, int *opt_index)
const struct option *long_options, int *opt_index)
{
return _getopt_internal (argc, (char **) argv, options, long_options,
opt_index, 0, 0);
opt_index, 0, 0);
}
int
_getopt_long_r (int argc, char **argv, const char *options,
const struct option *long_options, int *opt_index,
struct _getopt_data *d)
const struct option *long_options, int *opt_index,
struct _getopt_data *d)
{
return _getopt_internal_r (argc, argv, options, long_options, opt_index,
0, d, 0);
0, d, 0);
}
/* Like getopt_long, but '-' as well as '--' can indicate a long option.
@ -60,26 +48,27 @@ _getopt_long_r (int argc, char **argv, const char *options,
int
getopt_long_only (int argc, char *__getopt_argv_const *argv,
const char *options,
const struct option *long_options, int *opt_index)
const char *options,
const struct option *long_options, int *opt_index)
{
return _getopt_internal (argc, (char **) argv, options, long_options,
opt_index, 1, 0);
opt_index, 1, 0);
}
int
_getopt_long_only_r (int argc, char **argv, const char *options,
const struct option *long_options, int *opt_index,
struct _getopt_data *d)
const struct option *long_options, int *opt_index,
struct _getopt_data *d)
{
return _getopt_internal_r (argc, argv, options, long_options, opt_index,
1, d, 0);
1, d, 0);
}
#ifdef TEST
#include <stdio.h>
#include <stdlib.h>
int
main (int argc, char **argv)
@ -93,74 +82,74 @@ main (int argc, char **argv)
int option_index = 0;
static const struct option long_options[] =
{
{"add", 1, 0, 0},
{"append", 0, 0, 0},
{"delete", 1, 0, 0},
{"verbose", 0, 0, 0},
{"create", 0, 0, 0},
{"file", 1, 0, 0},
{0, 0, 0, 0}
{"add", 1, 0, 0},
{"append", 0, 0, 0},
{"delete", 1, 0, 0},
{"verbose", 0, 0, 0},
{"create", 0, 0, 0},
{"file", 1, 0, 0},
{0, 0, 0, 0}
};
c = getopt_long (argc, argv, "abc:d:0123456789",
long_options, &option_index);
long_options, &option_index);
if (c == -1)
break;
break;
switch (c)
{
case 0:
printf ("option %s", long_options[option_index].name);
if (optarg)
printf (" with arg %s", optarg);
printf ("\n");
break;
{
case 0:
printf ("option %s", long_options[option_index].name);
if (optarg)
printf (" with arg %s", optarg);
printf ("\n");
break;
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
if (digit_optind != 0 && digit_optind != this_option_optind)
printf ("digits occur in two different argv-elements.\n");
digit_optind = this_option_optind;
printf ("option %c\n", c);
break;
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
if (digit_optind != 0 && digit_optind != this_option_optind)
printf ("digits occur in two different argv-elements.\n");
digit_optind = this_option_optind;
printf ("option %c\n", c);
break;
case 'a':
printf ("option a\n");
break;
case 'a':
printf ("option a\n");
break;
case 'b':
printf ("option b\n");
break;
case 'b':
printf ("option b\n");
break;
case 'c':
printf ("option c with value '%s'\n", optarg);
break;
case 'c':
printf ("option c with value '%s'\n", optarg);
break;
case 'd':
printf ("option d with value '%s'\n", optarg);
break;
case 'd':
printf ("option d with value '%s'\n", optarg);
break;
case '?':
break;
case '?':
break;
default:
printf ("?? getopt returned character code 0%o ??\n", c);
}
default:
printf ("?? getopt returned character code 0%o ??\n", c);
}
}
if (optind < argc)
{
printf ("non-option ARGV-elements: ");
while (optind < argc)
printf ("%s ", argv[optind++]);
printf ("%s ", argv[optind++]);
printf ("\n");
}

91
gl/getopt_int.h
View file

@ -1,30 +1,31 @@
/* Internal declarations for getopt.
Copyright (C) 1989-1994, 1996-1999, 2001, 2003-2004, 2009-2013 Free Software
Foundation, Inc.
This file is part of the GNU C Library.
Copyright (C) 1989-2023 Free Software Foundation, Inc.
This file is part of the GNU C Library and is also part of gnulib.
Patches to this file should be submitted to both projects.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#ifndef _GETOPT_INT_H
#define _GETOPT_INT_H 1
#define _GETOPT_INT_H 1
#include <getopt.h>
extern int _getopt_internal (int ___argc, char **___argv,
const char *__shortopts,
const struct option *__longopts, int *__longind,
int __long_only, int __posixly_correct);
const char *__shortopts,
const struct option *__longopts, int *__longind,
int __long_only, int __posixly_correct);
/* Reentrant versions which can handle parsing multiple argument
@ -32,28 +33,20 @@ extern int _getopt_internal (int ___argc, char **___argv,
/* Describe how to deal with options that follow non-option ARGV-elements.
If the caller did not specify anything,
the default is REQUIRE_ORDER if the environment variable
POSIXLY_CORRECT is defined, PERMUTE otherwise.
REQUIRE_ORDER means don't recognize them as options; stop option
processing when the first non-option is seen. This is what POSIX
specifies should happen.
REQUIRE_ORDER means don't recognize them as options;
stop option processing when the first non-option is seen.
This is what Unix does.
This mode of operation is selected by either setting the environment
variable POSIXLY_CORRECT, or using '+' as the first character
of the list of option characters, or by calling getopt.
PERMUTE is the default. We permute the contents of ARGV as we
scan, so that eventually all the non-options are at the end.
This allows options to be given in any order, even with programs
that were not written to expect this.
PERMUTE means permute the contents of ARGV as we scan, so that
eventually all the non-options are at the end. This allows options
to be given in any order, even with programs that were not written
to expect this.
RETURN_IN_ORDER is an option available to programs that were
written to expect options and other ARGV-elements in any order
and that care about the ordering of the two. We describe each
non-option ARGV-element as if it were the argument of an option
with character code 1. Using '-' as the first character of the
list of option characters selects this mode of operation.
with character code 1.
The special argument '--' forces an end of option-scanning regardless
of the value of 'ordering'. In the case of RETURN_IN_ORDER, only
@ -91,11 +84,6 @@ struct _getopt_data
/* See __ord above. */
enum __ord __ordering;
/* If the POSIXLY_CORRECT environment variable is set
or getopt was called. */
int __posixly_correct;
/* Handle permutation of arguments. */
/* Describe the part of ARGV that contains non-options that have
@ -104,32 +92,27 @@ struct _getopt_data
int __first_nonopt;
int __last_nonopt;
#if defined _LIBC && defined USE_NONOPTION_FLAGS
int __nonoption_flags_max_len;
int __nonoption_flags_len;
#endif
};
/* The initializer is necessary to set OPTIND and OPTERR to their
default values and to clear the initialization flag. */
#define _GETOPT_DATA_INITIALIZER { 1, 1 }
#define _GETOPT_DATA_INITIALIZER { 1, 1 }
extern int _getopt_internal_r (int ___argc, char **___argv,
const char *__shortopts,
const struct option *__longopts, int *__longind,
int __long_only, struct _getopt_data *__data,
int __posixly_correct);
const char *__shortopts,
const struct option *__longopts, int *__longind,
int __long_only, struct _getopt_data *__data,
int __posixly_correct);
extern int _getopt_long_r (int ___argc, char **___argv,
const char *__shortopts,
const struct option *__longopts, int *__longind,
struct _getopt_data *__data);
const char *__shortopts,
const struct option *__longopts, int *__longind,
struct _getopt_data *__data);
extern int _getopt_long_only_r (int ___argc, char **___argv,
const char *__shortopts,
const struct option *__longopts,
int *__longind,
struct _getopt_data *__data);
const char *__shortopts,
const struct option *__longopts,
int *__longind,
struct _getopt_data *__data);
#endif /* getopt_int.h */

302
gl/getprogname.c Normal file
View file

@ -0,0 +1,302 @@
/* Program name management.
Copyright (C) 2016-2023 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#include <config.h>
/* Specification. */
#include "getprogname.h"
#include <errno.h> /* get program_invocation_name declaration */
#include <stdlib.h> /* get __argv declaration */
#ifdef _AIX
# include <unistd.h>
# include <procinfo.h>
# include <string.h>
#endif
#ifdef __MVS__
# ifndef _OPEN_SYS
# define _OPEN_SYS
# endif
# include <string.h>
# include <sys/ps.h>
#endif
#ifdef __hpux
# include <unistd.h>
# include <sys/param.h>
# include <sys/pstat.h>
# include <string.h>
#endif
#if defined __sgi || defined __osf__
# include <string.h>
# include <unistd.h>
# include <stdio.h>
# include <fcntl.h>
# include <sys/procfs.h>
#endif
#if defined __SCO_VERSION__ || defined __sysv5__
# include <fcntl.h>
# include <stdlib.h>
# include <string.h>
#endif
#include "basename-lgpl.h"
#ifndef HAVE_GETPROGNAME /* not Mac OS X, FreeBSD, NetBSD, OpenBSD >= 5.4, Cygwin */
char const *
getprogname (void)
{
# if HAVE_DECL_PROGRAM_INVOCATION_SHORT_NAME /* glibc, BeOS */
/* https://www.gnu.org/software/libc/manual/html_node/Error-Messages.html */
return program_invocation_short_name;
# elif HAVE_DECL_PROGRAM_INVOCATION_NAME /* glibc, BeOS */
/* https://www.gnu.org/software/libc/manual/html_node/Error-Messages.html */
return last_component (program_invocation_name);
# elif HAVE_GETEXECNAME /* Solaris */
/* https://docs.oracle.com/cd/E19253-01/816-5168/6mbb3hrb1/index.html */
const char *p = getexecname ();
if (!p)
p = "?";
return last_component (p);
# elif HAVE_DECL___ARGV /* mingw, MSVC */
/* https://docs.microsoft.com/en-us/cpp/c-runtime-library/argc-argv-wargv */
const char *p = __argv && __argv[0] ? __argv[0] : "?";
return last_component (p);
# elif HAVE_VAR___PROGNAME /* OpenBSD, Android, QNX */
/* https://man.openbsd.org/style.9 */
/* http://www.qnx.de/developers/docs/6.5.0/index.jsp?topic=%2Fcom.qnx.doc.neutrino_lib_ref%2Fp%2F__progname.html */
/* Be careful to declare this only when we absolutely need it
(OpenBSD 5.1), rather than when it's available. Otherwise,
its mere declaration makes program_invocation_short_name
malfunction (have zero length) with Fedora 25's glibc. */
extern char *__progname;
const char *p = __progname;
# if defined __ANDROID__
return last_component (p);
# else
return p && p[0] ? p : "?";
# endif
# elif _AIX /* AIX */
/* Idea by Bastien ROUCARIÈS,
https://lists.gnu.org/r/bug-gnulib/2010-12/msg00095.html
Reference: https://www.ibm.com/support/knowledgecenter/en/ssw_aix_61/com.ibm.aix.basetrf1/getprocs.htm
*/
static char *p;
static int first = 1;
if (first)
{
first = 0;
pid_t pid = getpid ();
struct procentry64 procs;
p = (0 < getprocs64 (&procs, sizeof procs, NULL, 0, &pid, 1)
? strdup (procs.pi_comm)
: NULL);
if (!p)
p = "?";
}
return p;
# elif defined __hpux
static char *p;
static int first = 1;
if (first)
{
first = 0;
pid_t pid = getpid ();
struct pst_status status;
if (pstat_getproc (&status, sizeof status, 0, pid) > 0)
{
char *ucomm = status.pst_ucomm;
char *cmd = status.pst_cmd;
if (strlen (ucomm) < PST_UCOMMLEN - 1)
p = ucomm;
else
{
/* ucomm is truncated to length PST_UCOMMLEN - 1.
Look at cmd instead. */
char *space = strchr (cmd, ' ');
if (space != NULL)
*space = '\0';
p = strrchr (cmd, '/');
if (p != NULL)
p++;
else
p = cmd;
if (strlen (p) > PST_UCOMMLEN - 1
&& memcmp (p, ucomm, PST_UCOMMLEN - 1) == 0)
/* p is less truncated than ucomm. */
;
else
p = ucomm;
}
p = strdup (p);
}
else
{
# if !defined __LP64__
/* Support for 32-bit programs running in 64-bit HP-UX.
The documented way to do this is to use the same source code
as above, but in a compilation unit where '#define _PSTAT64 1'
is in effect. I prefer a single compilation unit; the struct
size and the offsets are not going to change. */
char status64[1216];
if (__pstat_getproc64 (status64, sizeof status64, 0, pid) > 0)
{
char *ucomm = status64 + 288;
char *cmd = status64 + 168;
if (strlen (ucomm) < PST_UCOMMLEN - 1)
p = ucomm;
else
{
/* ucomm is truncated to length PST_UCOMMLEN - 1.
Look at cmd instead. */
char *space = strchr (cmd, ' ');
if (space != NULL)
*space = '\0';
p = strrchr (cmd, '/');
if (p != NULL)
p++;
else
p = cmd;
if (strlen (p) > PST_UCOMMLEN - 1
&& memcmp (p, ucomm, PST_UCOMMLEN - 1) == 0)
/* p is less truncated than ucomm. */
;
else
p = ucomm;
}
p = strdup (p);
}
else
# endif
p = NULL;
}
if (!p)
p = "?";
}
return p;
# elif __MVS__ /* z/OS */
/* https://www.ibm.com/support/knowledgecenter/SSLTBW_2.1.0/com.ibm.zos.v2r1.bpxbd00/rtwgetp.htm */
static char *p = "?";
static int first = 1;
if (first)
{
pid_t pid = getpid ();
int token;
W_PSPROC buf;
first = 0;
memset (&buf, 0, sizeof(buf));
buf.ps_cmdptr = (char *) malloc (buf.ps_cmdlen = PS_CMDBLEN_LONG);
buf.ps_conttyptr = (char *) malloc (buf.ps_conttylen = PS_CONTTYBLEN);
buf.ps_pathptr = (char *) malloc (buf.ps_pathlen = PS_PATHBLEN);
if (buf.ps_cmdptr && buf.ps_conttyptr && buf.ps_pathptr)
{
for (token = 0; token >= 0;
token = w_getpsent (token, &buf, sizeof(buf)))
{
if (token > 0 && buf.ps_pid == pid)
{
char *s = strdup (last_component (buf.ps_pathptr));
if (s)
p = s;
break;
}
}
}
free (buf.ps_cmdptr);
free (buf.ps_conttyptr);
free (buf.ps_pathptr);
}
return p;
# elif defined __sgi || defined __osf__ /* IRIX or Tru64 */
char filename[50];
int fd;
# if defined __sgi
sprintf (filename, "/proc/pinfo/%d", (int) getpid ());
# else
sprintf (filename, "/proc/%d", (int) getpid ());
# endif
fd = open (filename, O_RDONLY | O_CLOEXEC);
if (0 <= fd)
{
prpsinfo_t buf;
int ioctl_ok = 0 <= ioctl (fd, PIOCPSINFO, &buf);
close (fd);
if (ioctl_ok)
{
char *name = buf.pr_fname;
size_t namesize = sizeof buf.pr_fname;
/* It may not be NUL-terminated. */
char *namenul = memchr (name, '\0', namesize);
size_t namelen = namenul ? namenul - name : namesize;
char *namecopy = malloc (namelen + 1);
if (namecopy)
{
namecopy[namelen] = '\0';
return memcpy (namecopy, name, namelen);
}
}
}
return NULL;
# elif defined __SCO_VERSION__ || defined __sysv5__ /* SCO OpenServer6/UnixWare */
char buf[80];
int fd;
sprintf (buf, "/proc/%d/cmdline", getpid());
fd = open (buf, O_RDONLY);
if (0 <= fd)
{
size_t n = read (fd, buf, 79);
if (n > 0)
{
buf[n] = '\0'; /* Guarantee null-termination */
char *progname;
progname = strrchr (buf, '/');
if (progname)
{
progname = progname + 1; /* Skip the '/' */
}
else
{
progname = buf;
}
char *ret;
ret = malloc (strlen (progname) + 1);
if (ret)
{
strcpy (ret, progname);
return ret;
}
}
close (fd);
}
return "?";
# else
# error "getprogname module not ported to this OS"
# endif
}
#endif
/*
* Hey Emacs!
* Local Variables:
* coding: utf-8
* End:
*/

40
gl/getprogname.h Normal file
View file

@ -0,0 +1,40 @@
/* Program name management.
Copyright (C) 2016-2023 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#ifndef _GL_GETPROGNAME_H
#define _GL_GETPROGNAME_H
#include <stdlib.h>
#ifdef __cplusplus
extern "C" {
#endif
/* Return the base name of the executing program.
On native Windows this will usually end in ".exe" or ".EXE". */
#ifndef HAVE_GETPROGNAME
extern char const *getprogname (void)
# ifdef HAVE_DECL_PROGRAM_INVOCATION_NAME
_GL_ATTRIBUTE_PURE
# endif
;
#endif
#ifdef __cplusplus
}
#endif
#endif

50
gl/gettext.h
View file

@ -1,25 +1,26 @@
/* Convenience header for conditional use of GNU <libintl.h>.
Copyright (C) 1995-1998, 2000-2002, 2004-2006, 2009-2013 Free Software
Copyright (C) 1995-1998, 2000-2002, 2004-2006, 2009-2023 Free Software
Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
GNU Lesser General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, see <http://www.gnu.org/licenses/>. */
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#ifndef _LIBGETTEXT_H
#define _LIBGETTEXT_H 1
/* NLS can be disabled through the configure --disable-nls option. */
#if ENABLE_NLS
/* NLS can be disabled through the configure --disable-nls option
or through "#define ENABLE NLS 0" before including this file. */
#if defined ENABLE_NLS && ENABLE_NLS
/* Get declarations of GNU message catalog functions. */
# include <libintl.h>
@ -137,7 +138,7 @@
#define dcnpgettext(Domainname, Msgctxt, Msgid, MsgidPlural, N, Category) \
npgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, Category)
#ifdef __GNUC__
#if defined __GNUC__ || defined __clang__
__inline
#else
#ifdef __cplusplus
@ -156,7 +157,7 @@ pgettext_aux (const char *domain,
return translation;
}
#ifdef __GNUC__
#if defined __GNUC__ || defined __clang__
__inline
#else
#ifdef __cplusplus
@ -183,8 +184,15 @@ npgettext_aux (const char *domain,
#include <string.h>
#if (((__GNUC__ >= 3 || __GNUG__ >= 2) && !defined __STRICT_ANSI__) \
/* || __STDC_VERSION__ >= 199901L */ )
/* GNULIB_NO_VLA can be defined to disable use of VLAs even if supported.
This relates to the -Wvla and -Wvla-larger-than warnings, enabled in
the default GCC many warnings set. This allows programs to disable use
of VLAs, which may be unintended, or may be awkward to support portably,
or may have security implications due to non-deterministic stack usage. */
#if (!defined GNULIB_NO_VLA \
&& defined __STDC_VERSION__ && 199901L <= __STDC_VERSION__ \
&& !defined __STDC_NO_VLA__)
# define _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS 1
#else
# define _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS 0
@ -199,7 +207,7 @@ npgettext_aux (const char *domain,
#define dpgettext_expr(Domainname, Msgctxt, Msgid) \
dcpgettext_expr (Domainname, Msgctxt, Msgid, LC_MESSAGES)
#ifdef __GNUC__
#if defined __GNUC__ || defined __clang__
__inline
#else
#ifdef __cplusplus
@ -225,15 +233,17 @@ dcpgettext_expr (const char *domain,
if (msg_ctxt_id != NULL)
#endif
{
int found_translation;
memcpy (msg_ctxt_id, msgctxt, msgctxt_len - 1);
msg_ctxt_id[msgctxt_len - 1] = '\004';
memcpy (msg_ctxt_id + msgctxt_len, msgid, msgid_len);
translation = dcgettext (domain, msg_ctxt_id, category);
found_translation = (translation != msg_ctxt_id);
#if !_LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
if (msg_ctxt_id != buf)
free (msg_ctxt_id);
#endif
if (translation != msg_ctxt_id)
if (found_translation)
return translation;
}
return msgid;
@ -244,7 +254,7 @@ dcpgettext_expr (const char *domain,
#define dnpgettext_expr(Domainname, Msgctxt, Msgid, MsgidPlural, N) \
dcnpgettext_expr (Domainname, Msgctxt, Msgid, MsgidPlural, N, LC_MESSAGES)
#ifdef __GNUC__
#if defined __GNUC__ || defined __clang__
__inline
#else
#ifdef __cplusplus
@ -271,15 +281,17 @@ dcnpgettext_expr (const char *domain,
if (msg_ctxt_id != NULL)
#endif
{
int found_translation;
memcpy (msg_ctxt_id, msgctxt, msgctxt_len - 1);
msg_ctxt_id[msgctxt_len - 1] = '\004';
memcpy (msg_ctxt_id + msgctxt_len, msgid, msgid_len);
translation = dcngettext (domain, msg_ctxt_id, msgid_plural, n, category);
found_translation = !(translation == msg_ctxt_id || translation == msgid_plural);
#if !_LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
if (msg_ctxt_id != buf)
free (msg_ctxt_id);
#endif
if (!(translation == msg_ctxt_id || translation == msgid_plural))
if (found_translation)
return translation;
}
return (n == 1 ? msgid : msgid_plural);

116
gl/gl_openssl.h Normal file
View file

@ -0,0 +1,116 @@
/* Wrap openssl crypto hash routines in gnulib interface. -*- coding: utf-8 -*-
Copyright (C) 2013-2023 Free Software Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by Pádraig Brady */
#ifndef GL_OPENSSL_NAME
# error "Please define GL_OPENSSL_NAME to 1,5,256 etc."
#endif
#ifndef _GL_INLINE_HEADER_BEGIN
# error "Please include config.h first."
#endif
_GL_INLINE_HEADER_BEGIN
#ifndef GL_OPENSSL_INLINE
# define GL_OPENSSL_INLINE _GL_INLINE
#endif
/* Concatenate two preprocessor tokens. */
#define _GLCRYPTO_CONCAT_(prefix, suffix) prefix##suffix
#define _GLCRYPTO_CONCAT(prefix, suffix) _GLCRYPTO_CONCAT_ (prefix, suffix)
#if GL_OPENSSL_NAME == 5
# define OPENSSL_ALG md5
#else
# define OPENSSL_ALG _GLCRYPTO_CONCAT (sha, GL_OPENSSL_NAME)
#endif
/* Context type mappings. */
#if BASE_OPENSSL_TYPE != GL_OPENSSL_NAME
# undef BASE_OPENSSL_TYPE
# if GL_OPENSSL_NAME == 224
# define BASE_OPENSSL_TYPE 256
# elif GL_OPENSSL_NAME == 384
# define BASE_OPENSSL_TYPE 512
# endif
# define md5_CTX MD5_CTX
# define sha1_CTX SHA_CTX
# define sha224_CTX SHA256_CTX
# define sha224_ctx sha256_ctx
# define sha256_CTX SHA256_CTX
# define sha384_CTX SHA512_CTX
# define sha384_ctx sha512_ctx
# define sha512_CTX SHA512_CTX
# undef _gl_CTX
# undef _gl_ctx
# define _gl_CTX _GLCRYPTO_CONCAT (OPENSSL_ALG, _CTX) /* openssl type. */
# define _gl_ctx _GLCRYPTO_CONCAT (OPENSSL_ALG, _ctx) /* gnulib type. */
struct _gl_ctx { _gl_CTX CTX; };
#endif
/* Function name mappings. */
#define md5_prefix MD5
#define sha1_prefix SHA1
#define sha224_prefix SHA224
#define sha256_prefix SHA256
#define sha384_prefix SHA384
#define sha512_prefix SHA512
#define _GLCRYPTO_PREFIX _GLCRYPTO_CONCAT (OPENSSL_ALG, _prefix)
#define OPENSSL_FN(suffix) _GLCRYPTO_CONCAT (_GLCRYPTO_PREFIX, suffix)
#define GL_CRYPTO_FN(suffix) _GLCRYPTO_CONCAT (OPENSSL_ALG, suffix)
GL_OPENSSL_INLINE void
GL_CRYPTO_FN (_init_ctx) (struct _gl_ctx *ctx)
{ (void) OPENSSL_FN (_Init) ((_gl_CTX *) ctx); }
/* These were never exposed by gnulib. */
#if ! (GL_OPENSSL_NAME == 224 || GL_OPENSSL_NAME == 384)
GL_OPENSSL_INLINE void
GL_CRYPTO_FN (_process_bytes) (const void *buf, size_t len, struct _gl_ctx *ctx)
{ OPENSSL_FN (_Update) ((_gl_CTX *) ctx, buf, len); }
GL_OPENSSL_INLINE void
GL_CRYPTO_FN (_process_block) (const void *buf, size_t len, struct _gl_ctx *ctx)
{ GL_CRYPTO_FN (_process_bytes) (buf, len, ctx); }
#endif
GL_OPENSSL_INLINE void *
GL_CRYPTO_FN (_finish_ctx) (struct _gl_ctx *ctx, void *restrict res)
{ OPENSSL_FN (_Final) ((unsigned char *) res, (_gl_CTX *) ctx); return res; }
GL_OPENSSL_INLINE void *
GL_CRYPTO_FN (_buffer) (const char *buf, size_t len, void *restrict res)
{ return OPENSSL_FN () ((const unsigned char *) buf, len, (unsigned char *) res); }
GL_OPENSSL_INLINE void *
GL_CRYPTO_FN (_read_ctx) (const struct _gl_ctx *ctx, void *restrict res)
{
/* Assume any unprocessed bytes in ctx are not to be ignored. */
_gl_CTX tmp_ctx = *(_gl_CTX *) ctx;
OPENSSL_FN (_Final) ((unsigned char *) res, &tmp_ctx);
return res;
}
/* Undef so we can include multiple times. */
#undef GL_CRYPTO_FN
#undef OPENSSL_FN
#undef _GLCRYPTO_PREFIX
#undef OPENSSL_ALG
#undef GL_OPENSSL_NAME
_GL_INLINE_HEADER_END

866
gl/glthread/lock.c
View file

@ -1,22 +1,21 @@
/* Locking in multithreaded situations.
Copyright (C) 2005-2013 Free Software Foundation, Inc.
Copyright (C) 2005-2023 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
GNU Lesser General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, see <http://www.gnu.org/licenses/>. */
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by Bruno Haible <bruno@clisp.org>, 2005.
Based on GCC's gthr-posix.h, gthr-posix95.h, gthr-solaris.h,
gthr-win32.h. */
Based on GCC's gthr-posix.h, gthr-posix95.h. */
#include <config.h>
@ -24,15 +23,267 @@
/* ========================================================================= */
#if USE_ISOC_THREADS || USE_ISOC_AND_POSIX_THREADS
/* -------------------------- gl_lock_t datatype -------------------------- */
int
glthread_lock_init (gl_lock_t *lock)
{
if (mtx_init (&lock->mutex, mtx_plain) != thrd_success)
return ENOMEM;
lock->init_needed = 0;
return 0;
}
int
glthread_lock_lock (gl_lock_t *lock)
{
if (lock->init_needed)
call_once (&lock->init_once, lock->init_func);
if (mtx_lock (&lock->mutex) != thrd_success)
return EAGAIN;
return 0;
}
int
glthread_lock_unlock (gl_lock_t *lock)
{
if (lock->init_needed)
call_once (&lock->init_once, lock->init_func);
if (mtx_unlock (&lock->mutex) != thrd_success)
return EINVAL;
return 0;
}
int
glthread_lock_destroy (gl_lock_t *lock)
{
if (lock->init_needed)
call_once (&lock->init_once, lock->init_func);
mtx_destroy (&lock->mutex);
return 0;
}
/* ------------------------- gl_rwlock_t datatype ------------------------- */
int
glthread_rwlock_init (gl_rwlock_t *lock)
{
if (mtx_init (&lock->lock, mtx_plain) != thrd_success
|| cnd_init (&lock->waiting_readers) != thrd_success
|| cnd_init (&lock->waiting_writers) != thrd_success)
return ENOMEM;
lock->waiting_writers_count = 0;
lock->runcount = 0;
lock->init_needed = 0;
return 0;
}
int
glthread_rwlock_rdlock (gl_rwlock_t *lock)
{
if (lock->init_needed)
call_once (&lock->init_once, lock->init_func);
if (mtx_lock (&lock->lock) != thrd_success)
return EAGAIN;
/* Test whether only readers are currently running, and whether the runcount
field will not overflow, and whether no writer is waiting. The latter
condition is because POSIX recommends that "write locks shall take
precedence over read locks", to avoid "writer starvation". */
while (!(lock->runcount + 1 > 0 && lock->waiting_writers_count == 0))
{
/* This thread has to wait for a while. Enqueue it among the
waiting_readers. */
if (cnd_wait (&lock->waiting_readers, &lock->lock) != thrd_success)
{
mtx_unlock (&lock->lock);
return EINVAL;
}
}
lock->runcount++;
if (mtx_unlock (&lock->lock) != thrd_success)
return EINVAL;
return 0;
}
int
glthread_rwlock_wrlock (gl_rwlock_t *lock)
{
if (lock->init_needed)
call_once (&lock->init_once, lock->init_func);
if (mtx_lock (&lock->lock) != thrd_success)
return EAGAIN;
/* Test whether no readers or writers are currently running. */
while (!(lock->runcount == 0))
{
/* This thread has to wait for a while. Enqueue it among the
waiting_writers. */
lock->waiting_writers_count++;
if (cnd_wait (&lock->waiting_writers, &lock->lock) != thrd_success)
{
lock->waiting_writers_count--;
mtx_unlock (&lock->lock);
return EINVAL;
}
lock->waiting_writers_count--;
}
lock->runcount--; /* runcount becomes -1 */
if (mtx_unlock (&lock->lock) != thrd_success)
return EINVAL;
return 0;
}
int
glthread_rwlock_unlock (gl_rwlock_t *lock)
{
if (lock->init_needed)
call_once (&lock->init_once, lock->init_func);
if (mtx_lock (&lock->lock) != thrd_success)
return EAGAIN;
if (lock->runcount < 0)
{
/* Drop a writer lock. */
if (!(lock->runcount == -1))
{
mtx_unlock (&lock->lock);
return EINVAL;
}
lock->runcount = 0;
}
else
{
/* Drop a reader lock. */
if (!(lock->runcount > 0))
{
mtx_unlock (&lock->lock);
return EINVAL;
}
lock->runcount--;
}
if (lock->runcount == 0)
{
/* POSIX recommends that "write locks shall take precedence over read
locks", to avoid "writer starvation". */
if (lock->waiting_writers_count > 0)
{
/* Wake up one of the waiting writers. */
if (cnd_signal (&lock->waiting_writers) != thrd_success)
{
mtx_unlock (&lock->lock);
return EINVAL;
}
}
else
{
/* Wake up all waiting readers. */
if (cnd_broadcast (&lock->waiting_readers) != thrd_success)
{
mtx_unlock (&lock->lock);
return EINVAL;
}
}
}
if (mtx_unlock (&lock->lock) != thrd_success)
return EINVAL;
return 0;
}
int
glthread_rwlock_destroy (gl_rwlock_t *lock)
{
if (lock->init_needed)
call_once (&lock->init_once, lock->init_func);
mtx_destroy (&lock->lock);
cnd_destroy (&lock->waiting_readers);
cnd_destroy (&lock->waiting_writers);
return 0;
}
/* --------------------- gl_recursive_lock_t datatype --------------------- */
int
glthread_recursive_lock_init (gl_recursive_lock_t *lock)
{
if (mtx_init (&lock->mutex, mtx_plain | mtx_recursive) != thrd_success)
return ENOMEM;
lock->init_needed = 0;
return 0;
}
int
glthread_recursive_lock_lock (gl_recursive_lock_t *lock)
{
if (lock->init_needed)
call_once (&lock->init_once, lock->init_func);
if (mtx_lock (&lock->mutex) != thrd_success)
return EAGAIN;
return 0;
}
int
glthread_recursive_lock_unlock (gl_recursive_lock_t *lock)
{
if (lock->init_needed)
call_once (&lock->init_once, lock->init_func);
if (mtx_unlock (&lock->mutex) != thrd_success)
return EINVAL;
return 0;
}
int
glthread_recursive_lock_destroy (gl_recursive_lock_t *lock)
{
if (lock->init_needed)
call_once (&lock->init_once, lock->init_func);
mtx_destroy (&lock->mutex);
return 0;
}
/* -------------------------- gl_once_t datatype -------------------------- */
#endif
/* ========================================================================= */
#if USE_POSIX_THREADS
/* -------------------------- gl_lock_t datatype -------------------------- */
/* ------------------------- gl_rwlock_t datatype ------------------------- */
# if HAVE_PTHREAD_RWLOCK
# if HAVE_PTHREAD_RWLOCK && (HAVE_PTHREAD_RWLOCK_RDLOCK_PREFER_WRITER || (defined PTHREAD_RWLOCK_WRITER_NONRECURSIVE_INITIALIZER_NP && (__GNU_LIBRARY__ > 1)))
# if !defined PTHREAD_RWLOCK_INITIALIZER
# if defined PTHREAD_RWLOCK_INITIALIZER || defined PTHREAD_RWLOCK_INITIALIZER_NP
# if !HAVE_PTHREAD_RWLOCK_RDLOCK_PREFER_WRITER
/* glibc with bug https://sourceware.org/bugzilla/show_bug.cgi?id=13701 */
int
glthread_rwlock_init_for_glibc (pthread_rwlock_t *lock)
{
pthread_rwlockattr_t attributes;
int err;
err = pthread_rwlockattr_init (&attributes);
if (err != 0)
return err;
/* Note: PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP is the only value that
causes the writer to be preferred. PTHREAD_RWLOCK_PREFER_WRITER_NP does not
do this; see
http://man7.org/linux/man-pages/man3/pthread_rwlockattr_setkind_np.3.html */
err = pthread_rwlockattr_setkind_np (&attributes,
PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP);
if (err == 0)
err = pthread_rwlock_init(lock, &attributes);
/* pthread_rwlockattr_destroy always returns 0. It cannot influence the
return value. */
pthread_rwlockattr_destroy (&attributes);
return err;
}
# endif
# else
int
glthread_rwlock_init_multithreaded (gl_rwlock_t *lock)
@ -152,11 +403,9 @@ glthread_rwlock_rdlock_multithreaded (gl_rwlock_t *lock)
if (err != 0)
return err;
/* Test whether only readers are currently running, and whether the runcount
field will not overflow. */
/* POSIX says: "It is implementation-defined whether the calling thread
acquires the lock when a writer does not hold the lock and there are
writers blocked on the lock." Let's say, no: give the writers a higher
priority. */
field will not overflow, and whether no writer is waiting. The latter
condition is because POSIX recommends that "write locks shall take
precedence over read locks", to avoid "writer starvation". */
while (!(lock->runcount + 1 > 0 && lock->waiting_writers_count == 0))
{
/* This thread has to wait for a while. Enqueue it among the
@ -469,161 +718,25 @@ glthread_once_singlethreaded (pthread_once_t *once_control)
return 0;
}
#endif
/* ========================================================================= */
#if USE_PTH_THREADS
/* Use the GNU Pth threads library. */
/* -------------------------- gl_lock_t datatype -------------------------- */
/* ------------------------- gl_rwlock_t datatype ------------------------- */
/* --------------------- gl_recursive_lock_t datatype --------------------- */
/* -------------------------- gl_once_t datatype -------------------------- */
static void
glthread_once_call (void *arg)
{
void (**gl_once_temp_addr) (void) = (void (**) (void)) arg;
void (*initfunction) (void) = *gl_once_temp_addr;
initfunction ();
}
# if !(PTHREAD_IN_USE_DETECTION_HARD || USE_POSIX_THREADS_WEAK)
int
glthread_once_multithreaded (pth_once_t *once_control, void (*initfunction) (void))
glthread_once_multithreaded (pthread_once_t *once_control,
void (*init_function) (void))
{
void (*temp) (void) = initfunction;
return (!pth_once (once_control, glthread_once_call, &temp) ? errno : 0);
}
int
glthread_once_singlethreaded (pth_once_t *once_control)
{
/* We know that pth_once_t is an integer type. */
if (*once_control == PTH_ONCE_INIT)
int err = pthread_once (once_control, init_function);
if (err == ENOSYS)
{
/* First time use of once_control. Invert the marker. */
*once_control = ~ PTH_ONCE_INIT;
return 1;
/* This happens on FreeBSD 11: The pthread_once function in libc returns
ENOSYS. */
if (glthread_once_singlethreaded (once_control))
init_function ();
return 0;
}
else
return 0;
return err;
}
#endif
/* ========================================================================= */
#if USE_SOLARIS_THREADS
/* Use the old Solaris threads library. */
/* -------------------------- gl_lock_t datatype -------------------------- */
/* ------------------------- gl_rwlock_t datatype ------------------------- */
/* --------------------- gl_recursive_lock_t datatype --------------------- */
int
glthread_recursive_lock_init_multithreaded (gl_recursive_lock_t *lock)
{
int err;
err = mutex_init (&lock->mutex, USYNC_THREAD, NULL);
if (err != 0)
return err;
lock->owner = (thread_t) 0;
lock->depth = 0;
return 0;
}
int
glthread_recursive_lock_lock_multithreaded (gl_recursive_lock_t *lock)
{
thread_t self = thr_self ();
if (lock->owner != self)
{
int err;
err = mutex_lock (&lock->mutex);
if (err != 0)
return err;
lock->owner = self;
}
if (++(lock->depth) == 0) /* wraparound? */
{
lock->depth--;
return EAGAIN;
}
return 0;
}
int
glthread_recursive_lock_unlock_multithreaded (gl_recursive_lock_t *lock)
{
if (lock->owner != thr_self ())
return EPERM;
if (lock->depth == 0)
return EINVAL;
if (--(lock->depth) == 0)
{
lock->owner = (thread_t) 0;
return mutex_unlock (&lock->mutex);
}
else
return 0;
}
int
glthread_recursive_lock_destroy_multithreaded (gl_recursive_lock_t *lock)
{
if (lock->owner != (thread_t) 0)
return EBUSY;
return mutex_destroy (&lock->mutex);
}
/* -------------------------- gl_once_t datatype -------------------------- */
int
glthread_once_multithreaded (gl_once_t *once_control, void (*initfunction) (void))
{
if (!once_control->inited)
{
int err;
/* Use the mutex to guarantee that if another thread is already calling
the initfunction, this thread waits until it's finished. */
err = mutex_lock (&once_control->mutex);
if (err != 0)
return err;
if (!once_control->inited)
{
once_control->inited = 1;
initfunction ();
}
return mutex_unlock (&once_control->mutex);
}
else
return 0;
}
int
glthread_once_singlethreaded (gl_once_t *once_control)
{
/* We know that gl_once_t contains an integer type. */
if (!once_control->inited)
{
/* First time use of once_control. Invert the marker. */
once_control->inited = ~ 0;
return 1;
}
else
return 0;
}
# endif
#endif
@ -631,427 +744,6 @@ glthread_once_singlethreaded (gl_once_t *once_control)
#if USE_WINDOWS_THREADS
/* -------------------------- gl_lock_t datatype -------------------------- */
void
glthread_lock_init_func (gl_lock_t *lock)
{
InitializeCriticalSection (&lock->lock);
lock->guard.done = 1;
}
int
glthread_lock_lock_func (gl_lock_t *lock)
{
if (!lock->guard.done)
{
if (InterlockedIncrement (&lock->guard.started) == 0)
/* This thread is the first one to need this lock. Initialize it. */
glthread_lock_init (lock);
else
/* Yield the CPU while waiting for another thread to finish
initializing this lock. */
while (!lock->guard.done)
Sleep (0);
}
EnterCriticalSection (&lock->lock);
return 0;
}
int
glthread_lock_unlock_func (gl_lock_t *lock)
{
if (!lock->guard.done)
return EINVAL;
LeaveCriticalSection (&lock->lock);
return 0;
}
int
glthread_lock_destroy_func (gl_lock_t *lock)
{
if (!lock->guard.done)
return EINVAL;
DeleteCriticalSection (&lock->lock);
lock->guard.done = 0;
return 0;
}
/* ------------------------- gl_rwlock_t datatype ------------------------- */
/* In this file, the waitqueues are implemented as circular arrays. */
#define gl_waitqueue_t gl_carray_waitqueue_t
static void
gl_waitqueue_init (gl_waitqueue_t *wq)
{
wq->array = NULL;
wq->count = 0;
wq->alloc = 0;
wq->offset = 0;
}
/* Enqueues the current thread, represented by an event, in a wait queue.
Returns INVALID_HANDLE_VALUE if an allocation failure occurs. */
static HANDLE
gl_waitqueue_add (gl_waitqueue_t *wq)
{
HANDLE event;
unsigned int index;
if (wq->count == wq->alloc)
{
unsigned int new_alloc = 2 * wq->alloc + 1;
HANDLE *new_array =
(HANDLE *) realloc (wq->array, new_alloc * sizeof (HANDLE));
if (new_array == NULL)
/* No more memory. */
return INVALID_HANDLE_VALUE;
/* Now is a good opportunity to rotate the array so that its contents
starts at offset 0. */
if (wq->offset > 0)
{
unsigned int old_count = wq->count;
unsigned int old_alloc = wq->alloc;
unsigned int old_offset = wq->offset;
unsigned int i;
if (old_offset + old_count > old_alloc)
{
unsigned int limit = old_offset + old_count - old_alloc;
for (i = 0; i < limit; i++)
new_array[old_alloc + i] = new_array[i];
}
for (i = 0; i < old_count; i++)
new_array[i] = new_array[old_offset + i];
wq->offset = 0;
}
wq->array = new_array;
wq->alloc = new_alloc;
}
/* Whether the created event is a manual-reset one or an auto-reset one,
does not matter, since we will wait on it only once. */
event = CreateEvent (NULL, TRUE, FALSE, NULL);
if (event == INVALID_HANDLE_VALUE)
/* No way to allocate an event. */
return INVALID_HANDLE_VALUE;
index = wq->offset + wq->count;
if (index >= wq->alloc)
index -= wq->alloc;
wq->array[index] = event;
wq->count++;
return event;
}
/* Notifies the first thread from a wait queue and dequeues it. */
static void
gl_waitqueue_notify_first (gl_waitqueue_t *wq)
{
SetEvent (wq->array[wq->offset + 0]);
wq->offset++;
wq->count--;
if (wq->count == 0 || wq->offset == wq->alloc)
wq->offset = 0;
}
/* Notifies all threads from a wait queue and dequeues them all. */
static void
gl_waitqueue_notify_all (gl_waitqueue_t *wq)
{
unsigned int i;
for (i = 0; i < wq->count; i++)
{
unsigned int index = wq->offset + i;
if (index >= wq->alloc)
index -= wq->alloc;
SetEvent (wq->array[index]);
}
wq->count = 0;
wq->offset = 0;
}
void
glthread_rwlock_init_func (gl_rwlock_t *lock)
{
InitializeCriticalSection (&lock->lock);
gl_waitqueue_init (&lock->waiting_readers);
gl_waitqueue_init (&lock->waiting_writers);
lock->runcount = 0;
lock->guard.done = 1;
}
int
glthread_rwlock_rdlock_func (gl_rwlock_t *lock)
{
if (!lock->guard.done)
{
if (InterlockedIncrement (&lock->guard.started) == 0)
/* This thread is the first one to need this lock. Initialize it. */
glthread_rwlock_init (lock);
else
/* Yield the CPU while waiting for another thread to finish
initializing this lock. */
while (!lock->guard.done)
Sleep (0);
}
EnterCriticalSection (&lock->lock);
/* Test whether only readers are currently running, and whether the runcount
field will not overflow. */
if (!(lock->runcount + 1 > 0))
{
/* This thread has to wait for a while. Enqueue it among the
waiting_readers. */
HANDLE event = gl_waitqueue_add (&lock->waiting_readers);
if (event != INVALID_HANDLE_VALUE)
{
DWORD result;
LeaveCriticalSection (&lock->lock);
/* Wait until another thread signals this event. */
result = WaitForSingleObject (event, INFINITE);
if (result == WAIT_FAILED || result == WAIT_TIMEOUT)
abort ();
CloseHandle (event);
/* The thread which signalled the event already did the bookkeeping:
removed us from the waiting_readers, incremented lock->runcount. */
if (!(lock->runcount > 0))
abort ();
return 0;
}
else
{
/* Allocation failure. Weird. */
do
{
LeaveCriticalSection (&lock->lock);
Sleep (1);
EnterCriticalSection (&lock->lock);
}
while (!(lock->runcount + 1 > 0));
}
}
lock->runcount++;
LeaveCriticalSection (&lock->lock);
return 0;
}
int
glthread_rwlock_wrlock_func (gl_rwlock_t *lock)
{
if (!lock->guard.done)
{
if (InterlockedIncrement (&lock->guard.started) == 0)
/* This thread is the first one to need this lock. Initialize it. */
glthread_rwlock_init (lock);
else
/* Yield the CPU while waiting for another thread to finish
initializing this lock. */
while (!lock->guard.done)
Sleep (0);
}
EnterCriticalSection (&lock->lock);
/* Test whether no readers or writers are currently running. */
if (!(lock->runcount == 0))
{
/* This thread has to wait for a while. Enqueue it among the
waiting_writers. */
HANDLE event = gl_waitqueue_add (&lock->waiting_writers);
if (event != INVALID_HANDLE_VALUE)
{
DWORD result;
LeaveCriticalSection (&lock->lock);
/* Wait until another thread signals this event. */
result = WaitForSingleObject (event, INFINITE);
if (result == WAIT_FAILED || result == WAIT_TIMEOUT)
abort ();
CloseHandle (event);
/* The thread which signalled the event already did the bookkeeping:
removed us from the waiting_writers, set lock->runcount = -1. */
if (!(lock->runcount == -1))
abort ();
return 0;
}
else
{
/* Allocation failure. Weird. */
do
{
LeaveCriticalSection (&lock->lock);
Sleep (1);
EnterCriticalSection (&lock->lock);
}
while (!(lock->runcount == 0));
}
}
lock->runcount--; /* runcount becomes -1 */
LeaveCriticalSection (&lock->lock);
return 0;
}
int
glthread_rwlock_unlock_func (gl_rwlock_t *lock)
{
if (!lock->guard.done)
return EINVAL;
EnterCriticalSection (&lock->lock);
if (lock->runcount < 0)
{
/* Drop a writer lock. */
if (!(lock->runcount == -1))
abort ();
lock->runcount = 0;
}
else
{
/* Drop a reader lock. */
if (!(lock->runcount > 0))
{
LeaveCriticalSection (&lock->lock);
return EPERM;
}
lock->runcount--;
}
if (lock->runcount == 0)
{
/* POSIX recommends that "write locks shall take precedence over read
locks", to avoid "writer starvation". */
if (lock->waiting_writers.count > 0)
{
/* Wake up one of the waiting writers. */
lock->runcount--;
gl_waitqueue_notify_first (&lock->waiting_writers);
}
else
{
/* Wake up all waiting readers. */
lock->runcount += lock->waiting_readers.count;
gl_waitqueue_notify_all (&lock->waiting_readers);
}
}
LeaveCriticalSection (&lock->lock);
return 0;
}
int
glthread_rwlock_destroy_func (gl_rwlock_t *lock)
{
if (!lock->guard.done)
return EINVAL;
if (lock->runcount != 0)
return EBUSY;
DeleteCriticalSection (&lock->lock);
if (lock->waiting_readers.array != NULL)
free (lock->waiting_readers.array);
if (lock->waiting_writers.array != NULL)
free (lock->waiting_writers.array);
lock->guard.done = 0;
return 0;
}
/* --------------------- gl_recursive_lock_t datatype --------------------- */
void
glthread_recursive_lock_init_func (gl_recursive_lock_t *lock)
{
lock->owner = 0;
lock->depth = 0;
InitializeCriticalSection (&lock->lock);
lock->guard.done = 1;
}
int
glthread_recursive_lock_lock_func (gl_recursive_lock_t *lock)
{
if (!lock->guard.done)
{
if (InterlockedIncrement (&lock->guard.started) == 0)
/* This thread is the first one to need this lock. Initialize it. */
glthread_recursive_lock_init (lock);
else
/* Yield the CPU while waiting for another thread to finish
initializing this lock. */
while (!lock->guard.done)
Sleep (0);
}
{
DWORD self = GetCurrentThreadId ();
if (lock->owner != self)
{
EnterCriticalSection (&lock->lock);
lock->owner = self;
}
if (++(lock->depth) == 0) /* wraparound? */
{
lock->depth--;
return EAGAIN;
}
}
return 0;
}
int
glthread_recursive_lock_unlock_func (gl_recursive_lock_t *lock)
{
if (lock->owner != GetCurrentThreadId ())
return EPERM;
if (lock->depth == 0)
return EINVAL;
if (--(lock->depth) == 0)
{
lock->owner = 0;
LeaveCriticalSection (&lock->lock);
}
return 0;
}
int
glthread_recursive_lock_destroy_func (gl_recursive_lock_t *lock)
{
if (lock->owner != 0)
return EBUSY;
DeleteCriticalSection (&lock->lock);
lock->guard.done = 0;
return 0;
}
/* -------------------------- gl_once_t datatype -------------------------- */
void
glthread_once_func (gl_once_t *once_control, void (*initfunction) (void))
{
if (once_control->inited <= 0)
{
if (InterlockedIncrement (&once_control->started) == 0)
{
/* This thread is the first one to come to this once_control. */
InitializeCriticalSection (&once_control->lock);
EnterCriticalSection (&once_control->lock);
once_control->inited = 0;
initfunction ();
once_control->inited = 1;
LeaveCriticalSection (&once_control->lock);
}
else
{
/* Undo last operation. */
InterlockedDecrement (&once_control->started);
/* Some other thread has already started the initialization.
Yield the CPU while waiting for the other thread to finish
initializing and taking the lock. */
while (once_control->inited < 0)
Sleep (0);
if (once_control->inited <= 0)
{
/* Take the lock. This blocks until the other thread has
finished calling the initfunction. */
EnterCriticalSection (&once_control->lock);
LeaveCriticalSection (&once_control->lock);
if (!(once_control->inited > 0))
abort ();
}
}
}
}
#endif
/* ========================================================================= */

546
gl/glthread/lock.h
View file

@ -1,22 +1,21 @@
/* Locking in multithreaded situations.
Copyright (C) 2005-2013 Free Software Foundation, Inc.
Copyright (C) 2005-2023 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
GNU Lesser General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, see <http://www.gnu.org/licenses/>. */
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by Bruno Haible <bruno@clisp.org>, 2005.
Based on GCC's gthr-posix.h, gthr-posix95.h, gthr-solaris.h,
gthr-win32.h. */
Based on GCC's gthr-posix.h, gthr-posix95.h, gthr-win32.h. */
/* This file contains locking primitives for use with a given thread library.
It does not contain primitives for creating threads or for other
@ -81,6 +80,127 @@
#include <errno.h>
#include <stdlib.h>
#if !defined c11_threads_in_use
# if HAVE_THREADS_H && USE_POSIX_THREADS_FROM_LIBC
# define c11_threads_in_use() 1
# elif HAVE_THREADS_H && USE_POSIX_THREADS_WEAK
# include <threads.h>
# pragma weak thrd_exit
# define c11_threads_in_use() (thrd_exit != NULL)
# else
# define c11_threads_in_use() 0
# endif
#endif
/* ========================================================================= */
#if USE_ISOC_THREADS || USE_ISOC_AND_POSIX_THREADS
/* Use the ISO C threads library. */
# include <threads.h>
# ifdef __cplusplus
extern "C" {
# endif
/* -------------------------- gl_lock_t datatype -------------------------- */
typedef struct
{
int volatile init_needed;
once_flag init_once;
void (*init_func) (void);
mtx_t mutex;
}
gl_lock_t;
# define gl_lock_define(STORAGECLASS, NAME) \
STORAGECLASS gl_lock_t NAME;
# define gl_lock_define_initialized(STORAGECLASS, NAME) \
static void _atomic_init_##NAME (void); \
STORAGECLASS gl_lock_t NAME = \
{ 1, ONCE_FLAG_INIT, _atomic_init_##NAME }; \
static void _atomic_init_##NAME (void) \
{ \
if (glthread_lock_init (&(NAME))) \
abort (); \
}
extern int glthread_lock_init (gl_lock_t *lock);
extern int glthread_lock_lock (gl_lock_t *lock);
extern int glthread_lock_unlock (gl_lock_t *lock);
extern int glthread_lock_destroy (gl_lock_t *lock);
/* ------------------------- gl_rwlock_t datatype ------------------------- */
typedef struct
{
int volatile init_needed;
once_flag init_once;
void (*init_func) (void);
mtx_t lock; /* protects the remaining fields */
cnd_t waiting_readers; /* waiting readers */
cnd_t waiting_writers; /* waiting writers */
unsigned int waiting_writers_count; /* number of waiting writers */
int runcount; /* number of readers running, or -1 when a writer runs */
}
gl_rwlock_t;
# define gl_rwlock_define(STORAGECLASS, NAME) \
STORAGECLASS gl_rwlock_t NAME;
# define gl_rwlock_define_initialized(STORAGECLASS, NAME) \
static void _atomic_init_##NAME (void); \
STORAGECLASS gl_rwlock_t NAME = \
{ 1, ONCE_FLAG_INIT, _atomic_init_##NAME }; \
static void _atomic_init_##NAME (void) \
{ \
if (glthread_rwlock_init (&(NAME))) \
abort (); \
}
extern int glthread_rwlock_init (gl_rwlock_t *lock);
extern int glthread_rwlock_rdlock (gl_rwlock_t *lock);
extern int glthread_rwlock_wrlock (gl_rwlock_t *lock);
extern int glthread_rwlock_unlock (gl_rwlock_t *lock);
extern int glthread_rwlock_destroy (gl_rwlock_t *lock);
/* --------------------- gl_recursive_lock_t datatype --------------------- */
typedef struct
{
int volatile init_needed;
once_flag init_once;
void (*init_func) (void);
mtx_t mutex;
}
gl_recursive_lock_t;
# define gl_recursive_lock_define(STORAGECLASS, NAME) \
STORAGECLASS gl_recursive_lock_t NAME;
# define gl_recursive_lock_define_initialized(STORAGECLASS, NAME) \
static void _atomic_init_##NAME (void); \
STORAGECLASS gl_recursive_lock_t NAME = \
{ 1, ONCE_FLAG_INIT, _atomic_init_##NAME }; \
static void _atomic_init_##NAME (void) \
{ \
if (glthread_recursive_lock_init (&(NAME))) \
abort (); \
}
extern int glthread_recursive_lock_init (gl_recursive_lock_t *lock);
extern int glthread_recursive_lock_lock (gl_recursive_lock_t *lock);
extern int glthread_recursive_lock_unlock (gl_recursive_lock_t *lock);
extern int glthread_recursive_lock_destroy (gl_recursive_lock_t *lock);
/* -------------------------- gl_once_t datatype -------------------------- */
typedef once_flag gl_once_t;
# define gl_once_define(STORAGECLASS, NAME) \
STORAGECLASS once_flag NAME = ONCE_FLAG_INIT;
# define glthread_once(ONCE_CONTROL, INITFUNCTION) \
(call_once (ONCE_CONTROL, INITFUNCTION), 0)
# ifdef __cplusplus
}
# endif
#endif
/* ========================================================================= */
#if USE_POSIX_THREADS
@ -139,13 +259,25 @@ extern int glthread_in_use (void);
# pragma weak pthread_mutexattr_init
# pragma weak pthread_mutexattr_settype
# pragma weak pthread_mutexattr_destroy
# pragma weak pthread_rwlockattr_init
# if __GNU_LIBRARY__ > 1
# pragma weak pthread_rwlockattr_setkind_np
# endif
# pragma weak pthread_rwlockattr_destroy
# ifndef pthread_self
# pragma weak pthread_self
# endif
# if !PTHREAD_IN_USE_DETECTION_HARD
# pragma weak pthread_cancel
# define pthread_in_use() (pthread_cancel != NULL)
/* Considering all platforms with USE_POSIX_THREADS_WEAK, only few symbols
can be used to determine whether libpthread is in use. These are:
pthread_mutexattr_gettype
pthread_rwlockattr_destroy
pthread_rwlockattr_init
*/
# pragma weak pthread_mutexattr_gettype
# define pthread_in_use() \
(pthread_mutexattr_gettype != NULL || c11_threads_in_use ())
# endif
# else
@ -176,19 +308,32 @@ typedef pthread_mutex_t gl_lock_t;
/* ------------------------- gl_rwlock_t datatype ------------------------- */
# if HAVE_PTHREAD_RWLOCK
# if HAVE_PTHREAD_RWLOCK && (HAVE_PTHREAD_RWLOCK_RDLOCK_PREFER_WRITER || (defined PTHREAD_RWLOCK_WRITER_NONRECURSIVE_INITIALIZER_NP && (__GNU_LIBRARY__ > 1)))
# ifdef PTHREAD_RWLOCK_INITIALIZER
# if defined PTHREAD_RWLOCK_INITIALIZER || defined PTHREAD_RWLOCK_INITIALIZER_NP
typedef pthread_rwlock_t gl_rwlock_t;
# define gl_rwlock_define(STORAGECLASS, NAME) \
STORAGECLASS pthread_rwlock_t NAME;
# define gl_rwlock_define_initialized(STORAGECLASS, NAME) \
STORAGECLASS pthread_rwlock_t NAME = gl_rwlock_initializer;
# define gl_rwlock_initializer \
PTHREAD_RWLOCK_INITIALIZER
# define glthread_rwlock_init(LOCK) \
(pthread_in_use () ? pthread_rwlock_init (LOCK, NULL) : 0)
# if HAVE_PTHREAD_RWLOCK_RDLOCK_PREFER_WRITER
# if defined PTHREAD_RWLOCK_INITIALIZER
# define gl_rwlock_initializer \
PTHREAD_RWLOCK_INITIALIZER
# else
# define gl_rwlock_initializer \
PTHREAD_RWLOCK_INITIALIZER_NP
# endif
# define glthread_rwlock_init(LOCK) \
(pthread_in_use () ? pthread_rwlock_init (LOCK, NULL) : 0)
# else /* glibc with bug https://sourceware.org/bugzilla/show_bug.cgi?id=13701 */
# define gl_rwlock_initializer \
PTHREAD_RWLOCK_WRITER_NONRECURSIVE_INITIALIZER_NP
# define glthread_rwlock_init(LOCK) \
(pthread_in_use () ? glthread_rwlock_init_for_glibc (LOCK) : 0)
extern int glthread_rwlock_init_for_glibc (pthread_rwlock_t *lock);
# endif
# define glthread_rwlock_rdlock(LOCK) \
(pthread_in_use () ? pthread_rwlock_rdlock (LOCK) : 0)
# define glthread_rwlock_wrlock(LOCK) \
@ -362,10 +507,19 @@ extern int glthread_recursive_lock_destroy_multithreaded (gl_recursive_lock_t *l
typedef pthread_once_t gl_once_t;
# define gl_once_define(STORAGECLASS, NAME) \
STORAGECLASS pthread_once_t NAME = PTHREAD_ONCE_INIT;
# define glthread_once(ONCE_CONTROL, INITFUNCTION) \
(pthread_in_use () \
? pthread_once (ONCE_CONTROL, INITFUNCTION) \
: (glthread_once_singlethreaded (ONCE_CONTROL) ? (INITFUNCTION (), 0) : 0))
# if PTHREAD_IN_USE_DETECTION_HARD || USE_POSIX_THREADS_WEAK
# define glthread_once(ONCE_CONTROL, INITFUNCTION) \
(pthread_in_use () \
? pthread_once (ONCE_CONTROL, INITFUNCTION) \
: (glthread_once_singlethreaded (ONCE_CONTROL) ? (INITFUNCTION (), 0) : 0))
# else
# define glthread_once(ONCE_CONTROL, INITFUNCTION) \
(pthread_in_use () \
? glthread_once_multithreaded (ONCE_CONTROL, INITFUNCTION) \
: (glthread_once_singlethreaded (ONCE_CONTROL) ? (INITFUNCTION (), 0) : 0))
extern int glthread_once_multithreaded (pthread_once_t *once_control,
void (*init_function) (void));
# endif
extern int glthread_once_singlethreaded (pthread_once_t *once_control);
# ifdef __cplusplus
@ -376,248 +530,16 @@ extern int glthread_once_singlethreaded (pthread_once_t *once_control);
/* ========================================================================= */
#if USE_PTH_THREADS
/* Use the GNU Pth threads library. */
# include <pth.h>
# ifdef __cplusplus
extern "C" {
# endif
# if USE_PTH_THREADS_WEAK
/* Use weak references to the GNU Pth threads library. */
# pragma weak pth_mutex_init
# pragma weak pth_mutex_acquire
# pragma weak pth_mutex_release
# pragma weak pth_rwlock_init
# pragma weak pth_rwlock_acquire
# pragma weak pth_rwlock_release
# pragma weak pth_once
# pragma weak pth_cancel
# define pth_in_use() (pth_cancel != NULL)
# else
# define pth_in_use() 1
# endif
/* -------------------------- gl_lock_t datatype -------------------------- */
typedef pth_mutex_t gl_lock_t;
# define gl_lock_define(STORAGECLASS, NAME) \
STORAGECLASS pth_mutex_t NAME;
# define gl_lock_define_initialized(STORAGECLASS, NAME) \
STORAGECLASS pth_mutex_t NAME = gl_lock_initializer;
# define gl_lock_initializer \
PTH_MUTEX_INIT
# define glthread_lock_init(LOCK) \
(pth_in_use () && !pth_mutex_init (LOCK) ? errno : 0)
# define glthread_lock_lock(LOCK) \
(pth_in_use () && !pth_mutex_acquire (LOCK, 0, NULL) ? errno : 0)
# define glthread_lock_unlock(LOCK) \
(pth_in_use () && !pth_mutex_release (LOCK) ? errno : 0)
# define glthread_lock_destroy(LOCK) \
((void)(LOCK), 0)
/* ------------------------- gl_rwlock_t datatype ------------------------- */
typedef pth_rwlock_t gl_rwlock_t;
# define gl_rwlock_define(STORAGECLASS, NAME) \
STORAGECLASS pth_rwlock_t NAME;
# define gl_rwlock_define_initialized(STORAGECLASS, NAME) \
STORAGECLASS pth_rwlock_t NAME = gl_rwlock_initializer;
# define gl_rwlock_initializer \
PTH_RWLOCK_INIT
# define glthread_rwlock_init(LOCK) \
(pth_in_use () && !pth_rwlock_init (LOCK) ? errno : 0)
# define glthread_rwlock_rdlock(LOCK) \
(pth_in_use () && !pth_rwlock_acquire (LOCK, PTH_RWLOCK_RD, 0, NULL) ? errno : 0)
# define glthread_rwlock_wrlock(LOCK) \
(pth_in_use () && !pth_rwlock_acquire (LOCK, PTH_RWLOCK_RW, 0, NULL) ? errno : 0)
# define glthread_rwlock_unlock(LOCK) \
(pth_in_use () && !pth_rwlock_release (LOCK) ? errno : 0)
# define glthread_rwlock_destroy(LOCK) \
((void)(LOCK), 0)
/* --------------------- gl_recursive_lock_t datatype --------------------- */
/* In Pth, mutexes are recursive by default. */
typedef pth_mutex_t gl_recursive_lock_t;
# define gl_recursive_lock_define(STORAGECLASS, NAME) \
STORAGECLASS pth_mutex_t NAME;
# define gl_recursive_lock_define_initialized(STORAGECLASS, NAME) \
STORAGECLASS pth_mutex_t NAME = gl_recursive_lock_initializer;
# define gl_recursive_lock_initializer \
PTH_MUTEX_INIT
# define glthread_recursive_lock_init(LOCK) \
(pth_in_use () && !pth_mutex_init (LOCK) ? errno : 0)
# define glthread_recursive_lock_lock(LOCK) \
(pth_in_use () && !pth_mutex_acquire (LOCK, 0, NULL) ? errno : 0)
# define glthread_recursive_lock_unlock(LOCK) \
(pth_in_use () && !pth_mutex_release (LOCK) ? errno : 0)
# define glthread_recursive_lock_destroy(LOCK) \
((void)(LOCK), 0)
/* -------------------------- gl_once_t datatype -------------------------- */
typedef pth_once_t gl_once_t;
# define gl_once_define(STORAGECLASS, NAME) \
STORAGECLASS pth_once_t NAME = PTH_ONCE_INIT;
# define glthread_once(ONCE_CONTROL, INITFUNCTION) \
(pth_in_use () \
? glthread_once_multithreaded (ONCE_CONTROL, INITFUNCTION) \
: (glthread_once_singlethreaded (ONCE_CONTROL) ? (INITFUNCTION (), 0) : 0))
extern int glthread_once_multithreaded (pth_once_t *once_control, void (*initfunction) (void));
extern int glthread_once_singlethreaded (pth_once_t *once_control);
# ifdef __cplusplus
}
# endif
#endif
/* ========================================================================= */
#if USE_SOLARIS_THREADS
/* Use the old Solaris threads library. */
# include <thread.h>
# include <synch.h>
# ifdef __cplusplus
extern "C" {
# endif
# if USE_SOLARIS_THREADS_WEAK
/* Use weak references to the old Solaris threads library. */
# pragma weak mutex_init
# pragma weak mutex_lock
# pragma weak mutex_unlock
# pragma weak mutex_destroy
# pragma weak rwlock_init
# pragma weak rw_rdlock
# pragma weak rw_wrlock
# pragma weak rw_unlock
# pragma weak rwlock_destroy
# pragma weak thr_self
# pragma weak thr_suspend
# define thread_in_use() (thr_suspend != NULL)
# else
# define thread_in_use() 1
# endif
/* -------------------------- gl_lock_t datatype -------------------------- */
typedef mutex_t gl_lock_t;
# define gl_lock_define(STORAGECLASS, NAME) \
STORAGECLASS mutex_t NAME;
# define gl_lock_define_initialized(STORAGECLASS, NAME) \
STORAGECLASS mutex_t NAME = gl_lock_initializer;
# define gl_lock_initializer \
DEFAULTMUTEX
# define glthread_lock_init(LOCK) \
(thread_in_use () ? mutex_init (LOCK, USYNC_THREAD, NULL) : 0)
# define glthread_lock_lock(LOCK) \
(thread_in_use () ? mutex_lock (LOCK) : 0)
# define glthread_lock_unlock(LOCK) \
(thread_in_use () ? mutex_unlock (LOCK) : 0)
# define glthread_lock_destroy(LOCK) \
(thread_in_use () ? mutex_destroy (LOCK) : 0)
/* ------------------------- gl_rwlock_t datatype ------------------------- */
typedef rwlock_t gl_rwlock_t;
# define gl_rwlock_define(STORAGECLASS, NAME) \
STORAGECLASS rwlock_t NAME;
# define gl_rwlock_define_initialized(STORAGECLASS, NAME) \
STORAGECLASS rwlock_t NAME = gl_rwlock_initializer;
# define gl_rwlock_initializer \
DEFAULTRWLOCK
# define glthread_rwlock_init(LOCK) \
(thread_in_use () ? rwlock_init (LOCK, USYNC_THREAD, NULL) : 0)
# define glthread_rwlock_rdlock(LOCK) \
(thread_in_use () ? rw_rdlock (LOCK) : 0)
# define glthread_rwlock_wrlock(LOCK) \
(thread_in_use () ? rw_wrlock (LOCK) : 0)
# define glthread_rwlock_unlock(LOCK) \
(thread_in_use () ? rw_unlock (LOCK) : 0)
# define glthread_rwlock_destroy(LOCK) \
(thread_in_use () ? rwlock_destroy (LOCK) : 0)
/* --------------------- gl_recursive_lock_t datatype --------------------- */
/* Old Solaris threads did not have recursive locks.
We have to implement them ourselves. */
typedef struct
{
mutex_t mutex;
thread_t owner;
unsigned long depth;
}
gl_recursive_lock_t;
# define gl_recursive_lock_define(STORAGECLASS, NAME) \
STORAGECLASS gl_recursive_lock_t NAME;
# define gl_recursive_lock_define_initialized(STORAGECLASS, NAME) \
STORAGECLASS gl_recursive_lock_t NAME = gl_recursive_lock_initializer;
# define gl_recursive_lock_initializer \
{ DEFAULTMUTEX, (thread_t) 0, 0 }
# define glthread_recursive_lock_init(LOCK) \
(thread_in_use () ? glthread_recursive_lock_init_multithreaded (LOCK) : 0)
# define glthread_recursive_lock_lock(LOCK) \
(thread_in_use () ? glthread_recursive_lock_lock_multithreaded (LOCK) : 0)
# define glthread_recursive_lock_unlock(LOCK) \
(thread_in_use () ? glthread_recursive_lock_unlock_multithreaded (LOCK) : 0)
# define glthread_recursive_lock_destroy(LOCK) \
(thread_in_use () ? glthread_recursive_lock_destroy_multithreaded (LOCK) : 0)
extern int glthread_recursive_lock_init_multithreaded (gl_recursive_lock_t *lock);
extern int glthread_recursive_lock_lock_multithreaded (gl_recursive_lock_t *lock);
extern int glthread_recursive_lock_unlock_multithreaded (gl_recursive_lock_t *lock);
extern int glthread_recursive_lock_destroy_multithreaded (gl_recursive_lock_t *lock);
/* -------------------------- gl_once_t datatype -------------------------- */
typedef struct
{
volatile int inited;
mutex_t mutex;
}
gl_once_t;
# define gl_once_define(STORAGECLASS, NAME) \
STORAGECLASS gl_once_t NAME = { 0, DEFAULTMUTEX };
# define glthread_once(ONCE_CONTROL, INITFUNCTION) \
(thread_in_use () \
? glthread_once_multithreaded (ONCE_CONTROL, INITFUNCTION) \
: (glthread_once_singlethreaded (ONCE_CONTROL) ? (INITFUNCTION (), 0) : 0))
extern int glthread_once_multithreaded (gl_once_t *once_control, void (*initfunction) (void));
extern int glthread_once_singlethreaded (gl_once_t *once_control);
# ifdef __cplusplus
}
# endif
#endif
/* ========================================================================= */
#if USE_WINDOWS_THREADS
# define WIN32_LEAN_AND_MEAN /* avoid including junk */
# include <windows.h>
# include "windows-mutex.h"
# include "windows-rwlock.h"
# include "windows-recmutex.h"
# include "windows-once.h"
# ifdef __cplusplus
extern "C" {
# endif
@ -633,127 +555,69 @@ extern "C" {
/* There is no way to statically initialize a CRITICAL_SECTION. It needs
to be done lazily, once only. For this we need spinlocks. */
typedef struct { volatile int done; volatile long started; } gl_spinlock_t;
/* -------------------------- gl_lock_t datatype -------------------------- */
typedef struct
{
gl_spinlock_t guard; /* protects the initialization */
CRITICAL_SECTION lock;
}
gl_lock_t;
typedef glwthread_mutex_t gl_lock_t;
# define gl_lock_define(STORAGECLASS, NAME) \
STORAGECLASS gl_lock_t NAME;
# define gl_lock_define_initialized(STORAGECLASS, NAME) \
STORAGECLASS gl_lock_t NAME = gl_lock_initializer;
# define gl_lock_initializer \
{ { 0, -1 } }
GLWTHREAD_MUTEX_INIT
# define glthread_lock_init(LOCK) \
(glthread_lock_init_func (LOCK), 0)
(glwthread_mutex_init (LOCK), 0)
# define glthread_lock_lock(LOCK) \
glthread_lock_lock_func (LOCK)
glwthread_mutex_lock (LOCK)
# define glthread_lock_unlock(LOCK) \
glthread_lock_unlock_func (LOCK)
glwthread_mutex_unlock (LOCK)
# define glthread_lock_destroy(LOCK) \
glthread_lock_destroy_func (LOCK)
extern void glthread_lock_init_func (gl_lock_t *lock);
extern int glthread_lock_lock_func (gl_lock_t *lock);
extern int glthread_lock_unlock_func (gl_lock_t *lock);
extern int glthread_lock_destroy_func (gl_lock_t *lock);
glwthread_mutex_destroy (LOCK)
/* ------------------------- gl_rwlock_t datatype ------------------------- */
/* It is impossible to implement read-write locks using plain locks, without
introducing an extra thread dedicated to managing read-write locks.
Therefore here we need to use the low-level Event type. */
typedef struct
{
HANDLE *array; /* array of waiting threads, each represented by an event */
unsigned int count; /* number of waiting threads */
unsigned int alloc; /* length of allocated array */
unsigned int offset; /* index of first waiting thread in array */
}
gl_carray_waitqueue_t;
typedef struct
{
gl_spinlock_t guard; /* protects the initialization */
CRITICAL_SECTION lock; /* protects the remaining fields */
gl_carray_waitqueue_t waiting_readers; /* waiting readers */
gl_carray_waitqueue_t waiting_writers; /* waiting writers */
int runcount; /* number of readers running, or -1 when a writer runs */
}
gl_rwlock_t;
typedef glwthread_rwlock_t gl_rwlock_t;
# define gl_rwlock_define(STORAGECLASS, NAME) \
STORAGECLASS gl_rwlock_t NAME;
# define gl_rwlock_define_initialized(STORAGECLASS, NAME) \
STORAGECLASS gl_rwlock_t NAME = gl_rwlock_initializer;
# define gl_rwlock_initializer \
{ { 0, -1 } }
GLWTHREAD_RWLOCK_INIT
# define glthread_rwlock_init(LOCK) \
(glthread_rwlock_init_func (LOCK), 0)
(glwthread_rwlock_init (LOCK), 0)
# define glthread_rwlock_rdlock(LOCK) \
glthread_rwlock_rdlock_func (LOCK)
glwthread_rwlock_rdlock (LOCK)
# define glthread_rwlock_wrlock(LOCK) \
glthread_rwlock_wrlock_func (LOCK)
glwthread_rwlock_wrlock (LOCK)
# define glthread_rwlock_unlock(LOCK) \
glthread_rwlock_unlock_func (LOCK)
glwthread_rwlock_unlock (LOCK)
# define glthread_rwlock_destroy(LOCK) \
glthread_rwlock_destroy_func (LOCK)
extern void glthread_rwlock_init_func (gl_rwlock_t *lock);
extern int glthread_rwlock_rdlock_func (gl_rwlock_t *lock);
extern int glthread_rwlock_wrlock_func (gl_rwlock_t *lock);
extern int glthread_rwlock_unlock_func (gl_rwlock_t *lock);
extern int glthread_rwlock_destroy_func (gl_rwlock_t *lock);
glwthread_rwlock_destroy (LOCK)
/* --------------------- gl_recursive_lock_t datatype --------------------- */
/* The native Windows documentation says that CRITICAL_SECTION already
implements a recursive lock. But we need not rely on it: It's easy to
implement a recursive lock without this assumption. */
typedef struct
{
gl_spinlock_t guard; /* protects the initialization */
DWORD owner;
unsigned long depth;
CRITICAL_SECTION lock;
}
gl_recursive_lock_t;
typedef glwthread_recmutex_t gl_recursive_lock_t;
# define gl_recursive_lock_define(STORAGECLASS, NAME) \
STORAGECLASS gl_recursive_lock_t NAME;
# define gl_recursive_lock_define_initialized(STORAGECLASS, NAME) \
STORAGECLASS gl_recursive_lock_t NAME = gl_recursive_lock_initializer;
# define gl_recursive_lock_initializer \
{ { 0, -1 }, 0, 0 }
GLWTHREAD_RECMUTEX_INIT
# define glthread_recursive_lock_init(LOCK) \
(glthread_recursive_lock_init_func (LOCK), 0)
(glwthread_recmutex_init (LOCK), 0)
# define glthread_recursive_lock_lock(LOCK) \
glthread_recursive_lock_lock_func (LOCK)
glwthread_recmutex_lock (LOCK)
# define glthread_recursive_lock_unlock(LOCK) \
glthread_recursive_lock_unlock_func (LOCK)
glwthread_recmutex_unlock (LOCK)
# define glthread_recursive_lock_destroy(LOCK) \
glthread_recursive_lock_destroy_func (LOCK)
extern void glthread_recursive_lock_init_func (gl_recursive_lock_t *lock);
extern int glthread_recursive_lock_lock_func (gl_recursive_lock_t *lock);
extern int glthread_recursive_lock_unlock_func (gl_recursive_lock_t *lock);
extern int glthread_recursive_lock_destroy_func (gl_recursive_lock_t *lock);
glwthread_recmutex_destroy (LOCK)
/* -------------------------- gl_once_t datatype -------------------------- */
typedef struct
{
volatile int inited;
volatile long started;
CRITICAL_SECTION lock;
}
gl_once_t;
typedef glwthread_once_t gl_once_t;
# define gl_once_define(STORAGECLASS, NAME) \
STORAGECLASS gl_once_t NAME = { -1, -1 };
STORAGECLASS gl_once_t NAME = GLWTHREAD_ONCE_INIT;
# define glthread_once(ONCE_CONTROL, INITFUNCTION) \
(glthread_once_func (ONCE_CONTROL, INITFUNCTION), 0)
extern void glthread_once_func (gl_once_t *once_control, void (*initfunction) (void));
(glwthread_once (ONCE_CONTROL, INITFUNCTION), 0)
# ifdef __cplusplus
}
@ -763,7 +627,7 @@ extern void glthread_once_func (gl_once_t *once_control, void (*initfunction) (v
/* ========================================================================= */
#if !(USE_POSIX_THREADS || USE_PTH_THREADS || USE_SOLARIS_THREADS || USE_WINDOWS_THREADS)
#if !(USE_ISOC_THREADS || USE_POSIX_THREADS || USE_ISOC_AND_POSIX_THREADS || USE_WINDOWS_THREADS)
/* Provide dummy implementation if threads are not supported. */

55
gl/glthread/threadlib.c
View file

@ -1,18 +1,18 @@
/* Multithreading primitives.
Copyright (C) 2005-2013 Free Software Foundation, Inc.
Copyright (C) 2005-2023 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
GNU Lesser General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, see <http://www.gnu.org/licenses/>. */
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by Bruno Haible <bruno@clisp.org>, 2005. */
@ -20,15 +20,48 @@
/* ========================================================================= */
#if USE_POSIX_THREADS
#if USE_POSIX_THREADS || USE_ISOC_AND_POSIX_THREADS
/* Use the POSIX threads library. */
# include <errno.h>
# include <pthread.h>
# include <stdlib.h>
# if PTHREAD_IN_USE_DETECTION_HARD
# if defined __FreeBSD__ || defined __DragonFly__ /* FreeBSD */
/* Test using pthread_key_create. */
int
glthread_in_use (void)
{
static int tested;
static int result; /* 1: linked with -lpthread, 0: only with libc */
if (!tested)
{
pthread_key_t key;
int err = pthread_key_create (&key, NULL);
if (err == ENOSYS)
result = 0;
else
{
result = 1;
if (err == 0)
pthread_key_delete (key);
}
tested = 1;
}
return result;
}
# else /* Solaris, HP-UX */
/* Test using pthread_create. */
/* The function to be executed by a dummy thread. */
static void *
dummy_thread_func (void *arg)
@ -62,6 +95,8 @@ glthread_in_use (void)
return result;
}
# endif
# endif
#endif

35
gl/hard-locale.c Normal file
View file

@ -0,0 +1,35 @@
/* hard-locale.c -- Determine whether a locale is hard.
Copyright (C) 1997-1999, 2002-2004, 2006-2007, 2009-2023 Free Software
Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#include <config.h>
#include "hard-locale.h"
#include <locale.h>
#include <string.h>
bool
hard_locale (int category)
{
char locale[SETLOCALE_NULL_MAX];
if (setlocale_null_r (category, locale, sizeof (locale)))
return false;
return !(strcmp (locale, "C") == 0 || strcmp (locale, "POSIX") == 0);
}

26
gl/hard-locale.h Normal file
View file

@ -0,0 +1,26 @@
/* Determine whether a locale is hard.
Copyright (C) 1999, 2003-2004, 2009-2023 Free Software Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#ifndef HARD_LOCALE_H_
# define HARD_LOCALE_H_ 1
/* Return true if the specified CATEGORY of the current locale is hard, i.e.
different from the C or POSIX locale that has a fixed behavior.
CATEGORY must be one of the LC_* values, but not LC_ALL. */
extern bool hard_locale (int category);
#endif /* HARD_LOCALE_H_ */

21
gl/ialloc.c Normal file
View file

@ -0,0 +1,21 @@
/* malloc with idx_t rather than size_t
Copyright 2021-2023 Free Software Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#include <config.h>
#define IALLOC_INLINE _GL_EXTERN_INLINE
#include "ialloc.h"

100
gl/ialloc.h Normal file
View file

@ -0,0 +1,100 @@
/* ialloc.h -- malloc with idx_t rather than size_t
Copyright 2021-2023 Free Software Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#ifndef IALLOC_H_
#define IALLOC_H_
#include "idx.h"
#include <errno.h>
#include <stdint.h>
#include <stdlib.h>
#ifndef _GL_INLINE_HEADER_BEGIN
#error "Please include config.h first."
#endif
_GL_INLINE_HEADER_BEGIN
#ifndef IALLOC_INLINE
# define IALLOC_INLINE _GL_INLINE
#endif
#ifdef __cplusplus
extern "C" {
#endif
IALLOC_INLINE void * _GL_ATTRIBUTE_COLD
_gl_alloc_nomem (void)
{
errno = ENOMEM;
return NULL;
}
IALLOC_INLINE
_GL_ATTRIBUTE_MALLOC /*_GL_ATTRIBUTE_DEALLOC_FREE*/
void *
imalloc (idx_t s)
{
return s <= SIZE_MAX ? malloc (s) : _gl_alloc_nomem ();
}
IALLOC_INLINE
/*_GL_ATTRIBUTE_DEALLOC_FREE*/
void *
irealloc (void *p, idx_t s)
{
/* Work around GNU realloc glitch by treating a zero size as if it
were 1, so that returning NULL is equivalent to failing. */
return s <= SIZE_MAX ? realloc (p, s | !s) : _gl_alloc_nomem ();
}
IALLOC_INLINE
_GL_ATTRIBUTE_MALLOC /*_GL_ATTRIBUTE_DEALLOC_FREE*/
void *
icalloc (idx_t n, idx_t s)
{
if (SIZE_MAX < n)
{
if (s != 0)
return _gl_alloc_nomem ();
n = 0;
}
if (SIZE_MAX < s)
{
if (n != 0)
return _gl_alloc_nomem ();
s = 0;
}
return calloc (n, s);
}
IALLOC_INLINE void *
ireallocarray (void *p, idx_t n, idx_t s)
{
/* Work around GNU reallocarray glitch by treating a zero size as if
it were 1, so that returning NULL is equivalent to failing. */
if (n == 0 || s == 0)
n = s = 1;
return (n <= SIZE_MAX && s <= SIZE_MAX
? reallocarray (p, n, s)
: _gl_alloc_nomem ());
}
#ifdef __cplusplus
}
#endif
#endif

14
gl/idpriv-droptemp.c
View file

@ -1,9 +1,9 @@
/* Dropping uid/gid privileges of the current process temporarily.
Copyright (C) 2009-2013 Free Software Foundation, Inc.
Copyright (C) 2009-2023 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
@ -12,7 +12,7 @@
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#include <config.h>
@ -58,7 +58,9 @@ idpriv_temp_drop (void)
/* This is for executables that have the setuid bit set. */
# if HAVE_SETRESUID /* glibc, FreeBSD, OpenBSD, HP-UX */
/* See <http://www.usenix.org/events/sec02/full_papers/chen/chen.pdf>
/* See
Hao Chen, David Wagner, Drew Dean: Setuid Demystified
<https://www.usenix.org/legacy/publications/library/proceedings/sec02/full_papers/chen/chen.pdf>
figure 14. */
if (setresuid (-1, uid, saved_uid) < 0)
return -1;
@ -134,7 +136,9 @@ idpriv_temp_restore (void)
/* This is for executables that have the setuid bit set. */
# if HAVE_SETRESUID /* glibc, FreeBSD, OpenBSD, HP-UX */
/* See <http://www.usenix.org/events/sec02/full_papers/chen/chen.pdf>
/* See
Hao Chen, David Wagner, Drew Dean: Setuid Demystified
<https://www.usenix.org/legacy/publications/library/proceedings/sec02/full_papers/chen/chen.pdf>
figure 14. */
if (setresuid (-1, saved_uid, -1) < 0)
return -1;

12
gl/idpriv.h
View file

@ -1,9 +1,9 @@
/* Dropping uid/gid privileges of the current process.
Copyright (C) 2009-2013 Free Software Foundation, Inc.
Copyright (C) 2009-2023 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
@ -12,7 +12,7 @@
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#ifndef _IDPRIV_H
#define _IDPRIV_H
@ -74,11 +74,11 @@ extern "C" {
/* For more in-depth discussion of these topics, see the papers/articles
* Hao Chen, David Wagner, Drew Dean: Setuid Demystified
<http://www.usenix.org/events/sec02/full_papers/chen/chen.pdf>
<https://www.usenix.org/legacy/publications/library/proceedings/sec02/full_papers/chen/chen.pdf>
* Dan Tsafrir, Dilma da Silva, David Wagner: The Murky Issue of Changing
Process Identity: Revising "Setuid Demystified"
<http://www.eecs.berkeley.edu/~daw/papers/setuid-login08b.pdf>
<http://code.google.com/p/change-process-identity/>
<https://people.eecs.berkeley.edu/~daw/papers/setuid-login08b.pdf>
<https://code.google.com/archive/p/change-process-identity/>
* Dhruv Mohindra: Observe correct revocation order while relinquishing
privileges
<https://www.securecoding.cert.org/confluence/display/seccode/POS36-C.+Observe+correct+revocation+order+while+relinquishing+privileges>

134
gl/idx.h Normal file
View file

@ -0,0 +1,134 @@
/* A type for indices and sizes.
Copyright (C) 2020-2023 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#ifndef _IDX_H
#define _IDX_H
/* Get ptrdiff_t. */
#include <stddef.h>
/* Get PTRDIFF_MAX. */
#include <stdint.h>
/* The type 'idx_t' holds an (array) index or an (object) size.
Its implementation promotes to a signed integer type,
which can hold the values
0..2^63-1 (on 64-bit platforms) or
0..2^31-1 (on 32-bit platforms).
Why a signed integer type?
* Security: Signed types can be checked for overflow via
'-fsanitize=undefined', but unsigned types cannot.
* Comparisons without surprises: ISO C99 § 6.3.1.8 specifies a few
surprising results for comparisons, such as
(int) -3 < (unsigned long) 7 => false
(int) -3 < (unsigned int) 7 => false
and on 32-bit machines:
(long) -3 < (unsigned int) 7 => false
This is surprising because the natural comparison order is by
value in the realm of infinite-precision signed integers (ℤ).
The best way to get rid of such surprises is to use signed types
for numerical integer values, and use unsigned types only for
bit masks and enums.
Why not use 'size_t' directly?
* Because 'size_t' is an unsigned type, and a signed type is better.
See above.
Why not use 'ssize_t'?
* 'ptrdiff_t' is more portable; it is standardized by ISO C
whereas 'ssize_t' is standardized only by POSIX.
* 'ssize_t' is not required to be as wide as 'size_t', and some
now-obsolete POSIX platforms had 'size_t' wider than 'ssize_t'.
* Conversely, some now-obsolete platforms had 'ptrdiff_t' wider
than 'size_t', which can be a win and conforms to POSIX.
Won't this cause a problem with objects larger than PTRDIFF_MAX?
* Typical modern or large platforms do not allocate such objects,
so this is not much of a problem in practice; for example, you
can safely write 'idx_t len = strlen (s);'. To port to older
small platforms where allocations larger than PTRDIFF_MAX could
in theory be a problem, you can use Gnulib's ialloc module, or
functions like ximalloc in Gnulib's xalloc module.
Why not use 'ptrdiff_t' directly?
* Maintainability: When reading and modifying code, it helps to know that
a certain variable cannot have negative values. For example, when you
have a loop
int n = ...;
for (int i = 0; i < n; i++) ...
or
ptrdiff_t n = ...;
for (ptrdiff_t i = 0; i < n; i++) ...
you have to ask yourself "what if n < 0?". Whereas in
idx_t n = ...;
for (idx_t i = 0; i < n; i++) ...
you know that this case cannot happen.
Similarly, when a programmer writes
idx_t = ptr2 - ptr1;
there is an implied assertion that ptr1 and ptr2 point into the same
object and that ptr1 <= ptr2.
* Being future-proof: In the future, range types (integers which are
constrained to a certain range of values) may be added to C compilers
or to the C standard. Several programming languages (Ada, Haskell,
Common Lisp, Pascal) already have range types. Such range types may
help producing good code and good warnings. The type 'idx_t' could
then be typedef'ed to a range type that is signed after promotion. */
/* In the future, idx_t could be typedef'ed to a signed range type.
The clang "extended integer types", supported in Clang 11 or newer
<https://clang.llvm.org/docs/LanguageExtensions.html#extended-integer-types>,
are a special case of range types. However, these types don't support binary
operators with plain integer types (e.g. expressions such as x > 1).
Therefore, they don't behave like signed types (and not like unsigned types
either). So, we cannot use them here. */
/* Use the signed type 'ptrdiff_t'. */
/* Note: ISO C does not mandate that 'size_t' and 'ptrdiff_t' have the same
size, but it is so on all platforms we have seen since 1990. */
typedef ptrdiff_t idx_t;
/* IDX_MAX is the maximum value of an idx_t. */
#define IDX_MAX PTRDIFF_MAX
/* So far no need has been found for an IDX_WIDTH macro.
Perhaps there should be another macro IDX_VALUE_BITS that does not
count the sign bit and is therefore one less than PTRDIFF_WIDTH. */
#endif /* _IDX_H */

20
gl/inet_ntop.c
View file

@ -1,19 +1,19 @@
/* inet_ntop.c -- convert IPv4 and IPv6 addresses from binary to text form
Copyright (C) 2005-2006, 2008-2013 Free Software Foundation, Inc.
Copyright (C) 2005-2006, 2008-2023 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
GNU Lesser General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, see <http://www.gnu.org/licenses/>. */
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/*
* Copyright (c) 1996-1999 by Internet Software Consortium.
@ -40,7 +40,7 @@
/* Use this to suppress gcc's "...may be used before initialized" warnings.
Beware: The Code argument must not contain commas. */
#ifndef IF_LINT
# ifdef lint
# if defined GCC_LINT || defined lint
# define IF_LINT(Code) Code
# else
# define IF_LINT(Code) /* empty */

392
gl/intprops-internal.h Normal file
View file

@ -0,0 +1,392 @@
/* intprops-internal.h -- properties of integer types not visible to users
Copyright (C) 2001-2023 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#ifndef _GL_INTPROPS_INTERNAL_H
#define _GL_INTPROPS_INTERNAL_H
#include <limits.h>
/* Return a value with the common real type of E and V and the value of V.
Do not evaluate E. */
#define _GL_INT_CONVERT(e, v) ((1 ? 0 : (e)) + (v))
/* Act like _GL_INT_CONVERT (E, -V) but work around a bug in IRIX 6.5 cc; see
<https://lists.gnu.org/r/bug-gnulib/2011-05/msg00406.html>. */
#define _GL_INT_NEGATE_CONVERT(e, v) ((1 ? 0 : (e)) - (v))
/* The extra casts in the following macros work around compiler bugs,
e.g., in Cray C 5.0.3.0. */
/* True if the real type T is signed. */
#define _GL_TYPE_SIGNED(t) (! ((t) 0 < (t) -1))
/* Return 1 if the real expression E, after promotion, has a
signed or floating type. Do not evaluate E. */
#define _GL_EXPR_SIGNED(e) (_GL_INT_NEGATE_CONVERT (e, 1) < 0)
/* Minimum and maximum values for integer types and expressions. */
/* The width in bits of the integer type or expression T.
Do not evaluate T. T must not be a bit-field expression.
Padding bits are not supported; this is checked at compile-time below. */
#define _GL_TYPE_WIDTH(t) (sizeof (t) * CHAR_BIT)
/* The maximum and minimum values for the type of the expression E,
after integer promotion. E is not evaluated. */
#define _GL_INT_MINIMUM(e) \
(_GL_EXPR_SIGNED (e) \
? ~ _GL_SIGNED_INT_MAXIMUM (e) \
: _GL_INT_CONVERT (e, 0))
#define _GL_INT_MAXIMUM(e) \
(_GL_EXPR_SIGNED (e) \
? _GL_SIGNED_INT_MAXIMUM (e) \
: _GL_INT_NEGATE_CONVERT (e, 1))
#define _GL_SIGNED_INT_MAXIMUM(e) \
(((_GL_INT_CONVERT (e, 1) << (_GL_TYPE_WIDTH (+ (e)) - 2)) - 1) * 2 + 1)
/* Work around OpenVMS incompatibility with C99. */
#if !defined LLONG_MAX && defined __INT64_MAX
# define LLONG_MAX __INT64_MAX
# define LLONG_MIN __INT64_MIN
#endif
/* This include file assumes that signed types are two's complement without
padding bits; the above macros have undefined behavior otherwise.
If this is a problem for you, please let us know how to fix it for your host.
This assumption is tested by the intprops-tests module. */
/* Does the __typeof__ keyword work? This could be done by
'configure', but for now it's easier to do it by hand. */
#if (2 <= __GNUC__ \
|| (4 <= __clang_major__) \
|| (1210 <= __IBMC__ && defined __IBM__TYPEOF__) \
|| (0x5110 <= __SUNPRO_C && !__STDC__))
# define _GL_HAVE___TYPEOF__ 1
#else
# define _GL_HAVE___TYPEOF__ 0
#endif
/* Return 1 if the integer type or expression T might be signed. Return 0
if it is definitely unsigned. T must not be a bit-field expression.
This macro does not evaluate its argument, and expands to an
integer constant expression. */
#if _GL_HAVE___TYPEOF__
# define _GL_SIGNED_TYPE_OR_EXPR(t) _GL_TYPE_SIGNED (__typeof__ (t))
#else
# define _GL_SIGNED_TYPE_OR_EXPR(t) 1
#endif
/* Return 1 if - A would overflow in [MIN,MAX] arithmetic.
A should not have side effects, and A's type should be an
integer with minimum value MIN and maximum MAX. */
#define _GL_INT_NEGATE_RANGE_OVERFLOW(a, min, max) \
((min) < 0 ? (a) < - (max) : 0 < (a))
/* True if __builtin_add_overflow (A, B, P) and __builtin_sub_overflow
(A, B, P) work when P is non-null. */
#ifdef __EDG__
/* EDG-based compilers like nvc 22.1 cannot add 64-bit signed to unsigned
<https://bugs.gnu.org/53256>. */
# define _GL_HAS_BUILTIN_ADD_OVERFLOW 0
#elif defined __has_builtin
# define _GL_HAS_BUILTIN_ADD_OVERFLOW __has_builtin (__builtin_add_overflow)
/* __builtin_{add,sub}_overflow exists but is not reliable in GCC 5.x and 6.x,
see <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98269>. */
#elif 7 <= __GNUC__
# define _GL_HAS_BUILTIN_ADD_OVERFLOW 1
#else
# define _GL_HAS_BUILTIN_ADD_OVERFLOW 0
#endif
/* True if __builtin_mul_overflow (A, B, P) works when P is non-null. */
#if defined __clang_major__ && __clang_major__ < 14
/* Work around Clang bug <https://bugs.llvm.org/show_bug.cgi?id=16404>. */
# define _GL_HAS_BUILTIN_MUL_OVERFLOW 0
#else
# define _GL_HAS_BUILTIN_MUL_OVERFLOW _GL_HAS_BUILTIN_ADD_OVERFLOW
#endif
/* True if __builtin_add_overflow_p (A, B, C) works, and similarly for
__builtin_sub_overflow_p and __builtin_mul_overflow_p. */
#ifdef __EDG__
/* In EDG-based compilers like ICC 2021.3 and earlier,
__builtin_add_overflow_p etc. are not treated as integral constant
expressions even when all arguments are. */
# define _GL_HAS_BUILTIN_OVERFLOW_P 0
#elif defined __has_builtin
# define _GL_HAS_BUILTIN_OVERFLOW_P __has_builtin (__builtin_mul_overflow_p)
#else
# define _GL_HAS_BUILTIN_OVERFLOW_P (7 <= __GNUC__)
#endif
#if (!defined _GL_STDCKDINT_H && 202311 <= __STDC_VERSION__ \
&& ! (_GL_HAS_BUILTIN_ADD_OVERFLOW && _GL_HAS_BUILTIN_MUL_OVERFLOW))
# include <stdckdint.h>
#endif
/* Store the low-order bits of A + B, A - B, A * B, respectively, into *R.
Return 1 if the result overflows. Arguments should not have side
effects and A, B and *R can be of any integer type other than char,
bool, a bit-precise integer type, or an enumeration type. */
#if _GL_HAS_BUILTIN_ADD_OVERFLOW
# define _GL_INT_ADD_WRAPV(a, b, r) __builtin_add_overflow (a, b, r)
# define _GL_INT_SUBTRACT_WRAPV(a, b, r) __builtin_sub_overflow (a, b, r)
#elif defined ckd_add && defined ckd_sub && !defined _GL_STDCKDINT_H
# define _GL_INT_ADD_WRAPV(a, b, r) ckd_add (r, + (a), + (b))
# define _GL_INT_SUBTRACT_WRAPV(a, b, r) ckd_sub (r, + (a), + (b))
#else
# define _GL_INT_ADD_WRAPV(a, b, r) \
_GL_INT_OP_WRAPV (a, b, r, +, _GL_INT_ADD_RANGE_OVERFLOW)
# define _GL_INT_SUBTRACT_WRAPV(a, b, r) \
_GL_INT_OP_WRAPV (a, b, r, -, _GL_INT_SUBTRACT_RANGE_OVERFLOW)
#endif
#if _GL_HAS_BUILTIN_MUL_OVERFLOW
# if ((9 < __GNUC__ + (3 <= __GNUC_MINOR__) \
|| (__GNUC__ == 8 && 4 <= __GNUC_MINOR__)) \
&& !defined __EDG__)
# define _GL_INT_MULTIPLY_WRAPV(a, b, r) __builtin_mul_overflow (a, b, r)
# else
/* Work around GCC bug 91450. */
# define _GL_INT_MULTIPLY_WRAPV(a, b, r) \
((!_GL_SIGNED_TYPE_OR_EXPR (*(r)) && _GL_EXPR_SIGNED (a) && _GL_EXPR_SIGNED (b) \
&& _GL_INT_MULTIPLY_RANGE_OVERFLOW (a, b, 0, (__typeof__ (*(r))) -1)) \
? ((void) __builtin_mul_overflow (a, b, r), 1) \
: __builtin_mul_overflow (a, b, r))
# endif
#elif defined ckd_mul && !defined _GL_STDCKDINT_H
# define _GL_INT_MULTIPLY_WRAPV(a, b, r) ckd_mul (r, + (a), + (b))
#else
# define _GL_INT_MULTIPLY_WRAPV(a, b, r) \
_GL_INT_OP_WRAPV (a, b, r, *, _GL_INT_MULTIPLY_RANGE_OVERFLOW)
#endif
/* Nonzero if this compiler has GCC bug 68193 or Clang bug 25390. See:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68193
https://llvm.org/bugs/show_bug.cgi?id=25390
For now, assume all versions of GCC-like compilers generate bogus
warnings for _Generic. This matters only for compilers that
lack relevant builtins. */
#if __GNUC__ || defined __clang__
# define _GL__GENERIC_BOGUS 1
#else
# define _GL__GENERIC_BOGUS 0
#endif
/* Store the low-order bits of A <op> B into *R, where OP specifies
the operation and OVERFLOW the overflow predicate. Return 1 if the
result overflows. Arguments should not have side effects,
and A, B and *R can be of any integer type other than char, bool, a
bit-precise integer type, or an enumeration type. */
#if 201112 <= __STDC_VERSION__ && !_GL__GENERIC_BOGUS
# define _GL_INT_OP_WRAPV(a, b, r, op, overflow) \
(_Generic \
(*(r), \
signed char: \
_GL_INT_OP_CALC (a, b, r, op, overflow, unsigned int, \
signed char, SCHAR_MIN, SCHAR_MAX), \
unsigned char: \
_GL_INT_OP_CALC (a, b, r, op, overflow, unsigned int, \
unsigned char, 0, UCHAR_MAX), \
short int: \
_GL_INT_OP_CALC (a, b, r, op, overflow, unsigned int, \
short int, SHRT_MIN, SHRT_MAX), \
unsigned short int: \
_GL_INT_OP_CALC (a, b, r, op, overflow, unsigned int, \
unsigned short int, 0, USHRT_MAX), \
int: \
_GL_INT_OP_CALC (a, b, r, op, overflow, unsigned int, \
int, INT_MIN, INT_MAX), \
unsigned int: \
_GL_INT_OP_CALC (a, b, r, op, overflow, unsigned int, \
unsigned int, 0, UINT_MAX), \
long int: \
_GL_INT_OP_CALC (a, b, r, op, overflow, unsigned long int, \
long int, LONG_MIN, LONG_MAX), \
unsigned long int: \
_GL_INT_OP_CALC (a, b, r, op, overflow, unsigned long int, \
unsigned long int, 0, ULONG_MAX), \
long long int: \
_GL_INT_OP_CALC (a, b, r, op, overflow, unsigned long long int, \
long long int, LLONG_MIN, LLONG_MAX), \
unsigned long long int: \
_GL_INT_OP_CALC (a, b, r, op, overflow, unsigned long long int, \
unsigned long long int, 0, ULLONG_MAX)))
#else
/* Store the low-order bits of A <op> B into *R, where OP specifies
the operation and OVERFLOW the overflow predicate. If *R is
signed, its type is ST with bounds SMIN..SMAX; otherwise its type
is UT with bounds U..UMAX. ST and UT are narrower than int.
Return 1 if the result overflows. Arguments should not have side
effects, and A, B and *R can be of any integer type other than
char, bool, a bit-precise integer type, or an enumeration type. */
# if _GL_HAVE___TYPEOF__
# define _GL_INT_OP_WRAPV_SMALLISH(a,b,r,op,overflow,st,smin,smax,ut,umax) \
(_GL_TYPE_SIGNED (__typeof__ (*(r))) \
? _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned int, st, smin, smax) \
: _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned int, ut, 0, umax))
# else
# define _GL_INT_OP_WRAPV_SMALLISH(a,b,r,op,overflow,st,smin,smax,ut,umax) \
(overflow (a, b, smin, smax) \
? (overflow (a, b, 0, umax) \
? (*(r) = _GL_INT_OP_WRAPV_VIA_UNSIGNED (a,b,op,unsigned,st), 1) \
: (*(r) = _GL_INT_OP_WRAPV_VIA_UNSIGNED (a,b,op,unsigned,st)) < 0) \
: (overflow (a, b, 0, umax) \
? (*(r) = _GL_INT_OP_WRAPV_VIA_UNSIGNED (a,b,op,unsigned,st)) >= 0 \
: (*(r) = _GL_INT_OP_WRAPV_VIA_UNSIGNED (a,b,op,unsigned,st), 0)))
# endif
# define _GL_INT_OP_WRAPV(a, b, r, op, overflow) \
(sizeof *(r) == sizeof (signed char) \
? _GL_INT_OP_WRAPV_SMALLISH (a, b, r, op, overflow, \
signed char, SCHAR_MIN, SCHAR_MAX, \
unsigned char, UCHAR_MAX) \
: sizeof *(r) == sizeof (short int) \
? _GL_INT_OP_WRAPV_SMALLISH (a, b, r, op, overflow, \
short int, SHRT_MIN, SHRT_MAX, \
unsigned short int, USHRT_MAX) \
: sizeof *(r) == sizeof (int) \
? (_GL_EXPR_SIGNED (*(r)) \
? _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned int, \
int, INT_MIN, INT_MAX) \
: _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned int, \
unsigned int, 0, UINT_MAX)) \
: _GL_INT_OP_WRAPV_LONGISH(a, b, r, op, overflow))
# ifdef LLONG_MAX
# define _GL_INT_OP_WRAPV_LONGISH(a, b, r, op, overflow) \
(sizeof *(r) == sizeof (long int) \
? (_GL_EXPR_SIGNED (*(r)) \
? _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned long int, \
long int, LONG_MIN, LONG_MAX) \
: _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned long int, \
unsigned long int, 0, ULONG_MAX)) \
: (_GL_EXPR_SIGNED (*(r)) \
? _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned long long int, \
long long int, LLONG_MIN, LLONG_MAX) \
: _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned long long int, \
unsigned long long int, 0, ULLONG_MAX)))
# else
# define _GL_INT_OP_WRAPV_LONGISH(a, b, r, op, overflow) \
(_GL_EXPR_SIGNED (*(r)) \
? _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned long int, \
long int, LONG_MIN, LONG_MAX) \
: _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned long int, \
unsigned long int, 0, ULONG_MAX))
# endif
#endif
/* Store the low-order bits of A <op> B into *R, where the operation
is given by OP. Use the unsigned type UT for calculation to avoid
overflow problems. *R's type is T, with extrema TMIN and TMAX.
T can be any signed integer type other than char, bool, a
bit-precise integer type, or an enumeration type.
Return 1 if the result overflows. */
#define _GL_INT_OP_CALC(a, b, r, op, overflow, ut, t, tmin, tmax) \
(overflow (a, b, tmin, tmax) \
? (*(r) = _GL_INT_OP_WRAPV_VIA_UNSIGNED (a, b, op, ut, t), 1) \
: (*(r) = _GL_INT_OP_WRAPV_VIA_UNSIGNED (a, b, op, ut, t), 0))
/* Return 1 if the integer expressions A - B and -A would overflow,
respectively. Arguments should not have side effects,
and can be any signed integer type other than char, bool, a
bit-precise integer type, or an enumeration type.
These macros are tuned for their last input argument being a constant. */
#if _GL_HAS_BUILTIN_OVERFLOW_P
# define _GL_INT_NEGATE_OVERFLOW(a) \
__builtin_sub_overflow_p (0, a, (__typeof__ (- (a))) 0)
#else
# define _GL_INT_NEGATE_OVERFLOW(a) \
_GL_INT_NEGATE_RANGE_OVERFLOW (a, _GL_INT_MINIMUM (a), _GL_INT_MAXIMUM (a))
#endif
/* Return the low-order bits of A <op> B, where the operation is given
by OP. Use the unsigned type UT for calculation to avoid undefined
behavior on signed integer overflow, and convert the result to type T.
UT is at least as wide as T and is no narrower than unsigned int,
T is two's complement, and there is no padding or trap representations.
Assume that converting UT to T yields the low-order bits, as is
done in all known two's-complement C compilers. E.g., see:
https://gcc.gnu.org/onlinedocs/gcc/Integers-implementation.html
According to the C standard, converting UT to T yields an
implementation-defined result or signal for values outside T's
range. However, code that works around this theoretical problem
runs afoul of a compiler bug in Oracle Studio 12.3 x86. See:
https://lists.gnu.org/r/bug-gnulib/2017-04/msg00049.html
As the compiler bug is real, don't try to work around the
theoretical problem. */
#define _GL_INT_OP_WRAPV_VIA_UNSIGNED(a, b, op, ut, t) \
((t) ((ut) (a) op (ut) (b)))
/* Return true if the numeric values A + B, A - B, A * B fall outside
the range TMIN..TMAX. Arguments should not have side effects
and can be any integer type other than char, bool,
a bit-precise integer type, or an enumeration type.
TMIN should be signed and nonpositive.
TMAX should be positive, and should be signed unless TMIN is zero. */
#define _GL_INT_ADD_RANGE_OVERFLOW(a, b, tmin, tmax) \
((b) < 0 \
? (((tmin) \
? ((_GL_EXPR_SIGNED (_GL_INT_CONVERT (a, (tmin) - (b))) || (b) < (tmin)) \
&& (a) < (tmin) - (b)) \
: (a) <= -1 - (b)) \
|| ((_GL_EXPR_SIGNED (a) ? 0 <= (a) : (tmax) < (a)) && (tmax) < (a) + (b))) \
: (a) < 0 \
? (((tmin) \
? ((_GL_EXPR_SIGNED (_GL_INT_CONVERT (b, (tmin) - (a))) || (a) < (tmin)) \
&& (b) < (tmin) - (a)) \
: (b) <= -1 - (a)) \
|| ((_GL_EXPR_SIGNED (_GL_INT_CONVERT (a, b)) || (tmax) < (b)) \
&& (tmax) < (a) + (b))) \
: (tmax) < (b) || (tmax) - (b) < (a))
#define _GL_INT_SUBTRACT_RANGE_OVERFLOW(a, b, tmin, tmax) \
(((a) < 0) == ((b) < 0) \
? ((a) < (b) \
? !(tmin) || -1 - (tmin) < (b) - (a) - 1 \
: (tmax) < (a) - (b)) \
: (a) < 0 \
? ((!_GL_EXPR_SIGNED (_GL_INT_CONVERT ((a) - (tmin), b)) && (a) - (tmin) < 0) \
|| (a) - (tmin) < (b)) \
: ((! (_GL_EXPR_SIGNED (_GL_INT_CONVERT (tmax, b)) \
&& _GL_EXPR_SIGNED (_GL_INT_CONVERT ((tmax) + (b), a))) \
&& (tmax) <= -1 - (b)) \
|| (tmax) + (b) < (a)))
#define _GL_INT_MULTIPLY_RANGE_OVERFLOW(a, b, tmin, tmax) \
((b) < 0 \
? ((a) < 0 \
? (_GL_EXPR_SIGNED (_GL_INT_CONVERT (tmax, b)) \
? (a) < (tmax) / (b) \
: ((_GL_INT_NEGATE_OVERFLOW (b) \
? _GL_INT_CONVERT (b, tmax) >> (_GL_TYPE_WIDTH (+ (b)) - 1) \
: (tmax) / -(b)) \
<= -1 - (a))) \
: _GL_INT_NEGATE_OVERFLOW (_GL_INT_CONVERT (b, tmin)) && (b) == -1 \
? (_GL_EXPR_SIGNED (a) \
? 0 < (a) + (tmin) \
: 0 < (a) && -1 - (tmin) < (a) - 1) \
: (tmin) / (b) < (a)) \
: (b) == 0 \
? 0 \
: ((a) < 0 \
? (_GL_INT_NEGATE_OVERFLOW (_GL_INT_CONVERT (a, tmin)) && (a) == -1 \
? (_GL_EXPR_SIGNED (b) ? 0 < (b) + (tmin) : -1 - (tmin) < (b) - 1) \
: (tmin) / (a) < (b)) \
: (tmax) / (b) < (a)))
#endif /* _GL_INTPROPS_INTERNAL_H */

252
gl/intprops.h
View file

@ -1,34 +1,24 @@
/* intprops.h -- properties of integer types
Copyright (C) 2001-2005, 2009-2013 Free Software Foundation, Inc.
Copyright (C) 2001-2023 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
This program is free software: you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
GNU Lesser General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
/* Written by Paul Eggert. */
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#ifndef _GL_INTPROPS_H
#define _GL_INTPROPS_H
#include <limits.h>
/* Return an integer value, converted to the same type as the integer
expression E after integer type promotion. V is the unconverted value. */
#define _GL_INT_CONVERT(e, v) (0 * (e) + (v))
/* Act like _GL_INT_CONVERT (E, -V) but work around a bug in IRIX 6.5 cc; see
<http://lists.gnu.org/archive/html/bug-gnulib/2011-05/msg00406.html>. */
#define _GL_INT_NEGATE_CONVERT(e, v) (0 * (e) - (v))
#include "intprops-internal.h"
/* The extra casts in the following macros work around compiler bugs,
e.g., in Cray C 5.0.3.0. */
@ -37,72 +27,27 @@
an integer. */
#define TYPE_IS_INTEGER(t) ((t) 1.5 == 1)
/* True if negative values of the signed integer type T use two's
complement, ones' complement, or signed magnitude representation,
respectively. Much GNU code assumes two's complement, but some
people like to be portable to all possible C hosts. */
#define TYPE_TWOS_COMPLEMENT(t) ((t) ~ (t) 0 == (t) -1)
#define TYPE_ONES_COMPLEMENT(t) ((t) ~ (t) 0 == 0)
#define TYPE_SIGNED_MAGNITUDE(t) ((t) ~ (t) 0 < (t) -1)
/* True if the real type T is signed. */
#define TYPE_SIGNED(t) _GL_TYPE_SIGNED (t)
/* True if the signed integer expression E uses two's complement. */
#define _GL_INT_TWOS_COMPLEMENT(e) (~ _GL_INT_CONVERT (e, 0) == -1)
/* True if the arithmetic type T is signed. */
#define TYPE_SIGNED(t) (! ((t) 0 < (t) -1))
/* Return 1 if the integer expression E, after integer promotion, has
a signed type. */
#define _GL_INT_SIGNED(e) (_GL_INT_NEGATE_CONVERT (e, 1) < 0)
/* Return 1 if the real expression E, after promotion, has a
signed or floating type. Do not evaluate E. */
#define EXPR_SIGNED(e) _GL_EXPR_SIGNED (e)
/* Minimum and maximum values for integer types and expressions. These
macros have undefined behavior if T is signed and has padding bits.
If this is a problem for you, please let us know how to fix it for
your host. */
/* Minimum and maximum values for integer types and expressions. */
/* The width in bits of the integer type or expression T.
Do not evaluate T. T must not be a bit-field expression.
Padding bits are not supported; this is checked at compile-time below. */
#define TYPE_WIDTH(t) _GL_TYPE_WIDTH (t)
/* The maximum and minimum values for the integer type T. */
#define TYPE_MINIMUM(t) \
((t) (! TYPE_SIGNED (t) \
? (t) 0 \
: TYPE_SIGNED_MAGNITUDE (t) \
? ~ (t) 0 \
: ~ TYPE_MAXIMUM (t)))
#define TYPE_MINIMUM(t) ((t) ~ TYPE_MAXIMUM (t))
#define TYPE_MAXIMUM(t) \
((t) (! TYPE_SIGNED (t) \
? (t) -1 \
: ((((t) 1 << (sizeof (t) * CHAR_BIT - 2)) - 1) * 2 + 1)))
/* The maximum and minimum values for the type of the expression E,
after integer promotion. E should not have side effects. */
#define _GL_INT_MINIMUM(e) \
(_GL_INT_SIGNED (e) \
? - _GL_INT_TWOS_COMPLEMENT (e) - _GL_SIGNED_INT_MAXIMUM (e) \
: _GL_INT_CONVERT (e, 0))
#define _GL_INT_MAXIMUM(e) \
(_GL_INT_SIGNED (e) \
? _GL_SIGNED_INT_MAXIMUM (e) \
: _GL_INT_NEGATE_CONVERT (e, 1))
#define _GL_SIGNED_INT_MAXIMUM(e) \
(((_GL_INT_CONVERT (e, 1) << (sizeof ((e) + 0) * CHAR_BIT - 2)) - 1) * 2 + 1)
/* Return 1 if the __typeof__ keyword works. This could be done by
'configure', but for now it's easier to do it by hand. */
#if 2 <= __GNUC__ || defined __IBM__TYPEOF__ || 0x5110 <= __SUNPRO_C
# define _GL_HAVE___TYPEOF__ 1
#else
# define _GL_HAVE___TYPEOF__ 0
#endif
/* Return 1 if the integer type or expression T might be signed. Return 0
if it is definitely unsigned. This macro does not evaluate its argument,
and expands to an integer constant expression. */
#if _GL_HAVE___TYPEOF__
# define _GL_SIGNED_TYPE_OR_EXPR(t) TYPE_SIGNED (__typeof__ (t))
#else
# define _GL_SIGNED_TYPE_OR_EXPR(t) 1
#endif
: ((((t) 1 << (TYPE_WIDTH (t) - 2)) - 1) * 2 + 1)))
/* Bound on length of the string representing an unsigned integer
value representable in B bits. log10 (2.0) < 146/485. The
@ -110,30 +55,31 @@
#define INT_BITS_STRLEN_BOUND(b) (((b) * 146 + 484) / 485)
/* Bound on length of the string representing an integer type or expression T.
T must not be a bit-field expression.
Subtract 1 for the sign bit if T is signed, and then add 1 more for
a minus sign if needed.
Because _GL_SIGNED_TYPE_OR_EXPR sometimes returns 0 when its argument is
signed, this macro may overestimate the true bound by one byte when
Because _GL_SIGNED_TYPE_OR_EXPR sometimes returns 1 when its argument is
unsigned, this macro may overestimate the true bound by one byte when
applied to unsigned types of size 2, 4, 16, ... bytes. */
#define INT_STRLEN_BOUND(t) \
(INT_BITS_STRLEN_BOUND (sizeof (t) * CHAR_BIT \
- _GL_SIGNED_TYPE_OR_EXPR (t)) \
(INT_BITS_STRLEN_BOUND (TYPE_WIDTH (t) - _GL_SIGNED_TYPE_OR_EXPR (t)) \
+ _GL_SIGNED_TYPE_OR_EXPR (t))
/* Bound on buffer size needed to represent an integer type or expression T,
including the terminating null. */
including the terminating null. T must not be a bit-field expression. */
#define INT_BUFSIZE_BOUND(t) (INT_STRLEN_BOUND (t) + 1)
/* Range overflow checks.
The INT_<op>_RANGE_OVERFLOW macros return 1 if the corresponding C
operators might not yield numerically correct answers due to
arithmetic overflow. They do not rely on undefined or
implementation-defined behavior. Their implementations are simple
and straightforward, but they are a bit harder to use than the
INT_<op>_OVERFLOW macros described below.
operators overflow arithmetically when given the same arguments.
These macros do not rely on undefined or implementation-defined behavior.
Although their implementations are simple and straightforward,
they are harder to use and may be less efficient than the
INT_<op>_WRAPV, INT_<op>_OK, and INT_<op>_OVERFLOW macros described below.
Example usage:
@ -157,6 +103,9 @@
must have minimum value MIN and maximum MAX. Unsigned types should
use a zero MIN of the proper type.
Because all arguments are subject to integer promotions, these
macros typically do not work on types narrower than 'int'.
These macros are tuned for constant MIN and MAX. For commutative
operations such as A + B, they are also tuned for constant B. */
@ -177,14 +126,12 @@
/* Return 1 if - A would overflow in [MIN,MAX] arithmetic.
See above for restrictions. */
#define INT_NEGATE_RANGE_OVERFLOW(a, min, max) \
((min) < 0 \
? (a) < - (max) \
: 0 < (a))
_GL_INT_NEGATE_RANGE_OVERFLOW (a, min, max)
/* Return 1 if A * B would overflow in [MIN,MAX] arithmetic.
See above for restrictions. Avoid && and || as they tickle
bugs in Sun C 5.11 2010/08/13 and other compilers; see
<http://lists.gnu.org/archive/html/bug-gnulib/2011-05/msg00401.html>. */
<https://lists.gnu.org/r/bug-gnulib/2011-05/msg00401.html>. */
#define INT_MULTIPLY_RANGE_OVERFLOW(a, b, min, max) \
((b) < 0 \
? ((a) < 0 \
@ -223,24 +170,32 @@
? (a) < (min) >> (b) \
: (max) >> (b) < (a))
/* The _GL*_OVERFLOW macros have the same restrictions as the
*_RANGE_OVERFLOW macros, except that they do not assume that operands
(e.g., A and B) have the same type as MIN and MAX. Instead, they assume
that the result (e.g., A + B) has that type. */
#define _GL_ADD_OVERFLOW(a, b, min, max) \
((min) < 0 ? INT_ADD_RANGE_OVERFLOW (a, b, min, max) \
: (a) < 0 ? (b) <= (a) + (b) \
: (b) < 0 ? (a) <= (a) + (b) \
: (a) + (b) < (b))
#define _GL_SUBTRACT_OVERFLOW(a, b, min, max) \
((min) < 0 ? INT_SUBTRACT_RANGE_OVERFLOW (a, b, min, max) \
: (a) < 0 ? 1 \
: (b) < 0 ? (a) - (b) <= (a) \
: (a) < (b))
#define _GL_MULTIPLY_OVERFLOW(a, b, min, max) \
(((min) == 0 && (((a) < 0 && 0 < (b)) || ((b) < 0 && 0 < (a)))) \
|| INT_MULTIPLY_RANGE_OVERFLOW (a, b, min, max))
#if _GL_HAS_BUILTIN_OVERFLOW_P
# define _GL_ADD_OVERFLOW(a, b, min, max) \
__builtin_add_overflow_p (a, b, (__typeof__ ((a) + (b))) 0)
# define _GL_SUBTRACT_OVERFLOW(a, b, min, max) \
__builtin_sub_overflow_p (a, b, (__typeof__ ((a) - (b))) 0)
# define _GL_MULTIPLY_OVERFLOW(a, b, min, max) \
__builtin_mul_overflow_p (a, b, (__typeof__ ((a) * (b))) 0)
#else
# define _GL_ADD_OVERFLOW(a, b, min, max) \
((min) < 0 ? INT_ADD_RANGE_OVERFLOW (a, b, min, max) \
: (a) < 0 ? (b) <= (a) + (b) \
: (b) < 0 ? (a) <= (a) + (b) \
: (a) + (b) < (b))
# define _GL_SUBTRACT_OVERFLOW(a, b, min, max) \
((min) < 0 ? INT_SUBTRACT_RANGE_OVERFLOW (a, b, min, max) \
: (a) < 0 ? 1 \
: (b) < 0 ? (a) - (b) <= (a) \
: (a) < (b))
# define _GL_MULTIPLY_OVERFLOW(a, b, min, max) \
(((min) == 0 && (((a) < 0 && 0 < (b)) || ((b) < 0 && 0 < (a)))) \
|| INT_MULTIPLY_RANGE_OVERFLOW (a, b, min, max))
#endif
#define _GL_DIVIDE_OVERFLOW(a, b, min, max) \
((min) < 0 ? (b) == _GL_INT_NEGATE_CONVERT (min, 1) && (a) < - (max) \
: (a) < 0 ? (b) <= (a) + (b) - 1 \
@ -262,22 +217,31 @@
: (a) % - (b)) \
== 0)
/* Integer overflow checks.
/* Check for integer overflow, and report low order bits of answer.
The INT_<op>_OVERFLOW macros return 1 if the corresponding C operators
might not yield numerically correct answers due to arithmetic overflow.
They work correctly on all known practical hosts, and do not rely
The INT_<op>_WRAPV macros compute the low-order bits of the sum,
difference, and product of two C integers, and return 1 if these
low-order bits are not numerically correct.
These macros work correctly on all known practical hosts, and do not rely
on undefined behavior due to signed arithmetic overflow.
Example usage:
Example usage, assuming A and B are long int:
long int i = ...;
long int j = ...;
if (INT_MULTIPLY_OVERFLOW (i, j))
printf ("multiply would overflow");
if (INT_MULTIPLY_OVERFLOW (a, b))
printf ("result would overflow\n");
else
printf ("product is %ld", i * j);
printf ("result is %ld (no overflow)\n", a * b);
Example usage with WRAPV flavor:
long int result;
bool overflow = INT_MULTIPLY_WRAPV (a, b, &result);
printf ("result is %ld (%s)\n", result,
overflow ? "after overflow" : "no overflow");
Restrictions on these macros:
These macros do not check for all possible numerical problems or
undefined or unspecified behavior: they do not check for division
@ -286,7 +250,23 @@
These macros may evaluate their arguments zero or multiple times, so the
arguments should not have side effects.
These macros are tuned for their last argument being a constant.
The WRAPV macros are not constant expressions. They support only
+, binary -, and *.
Because the WRAPV macros convert the result, they report overflow
in different circumstances than the OVERFLOW macros do. For
example, in the typical case with 16-bit 'short' and 32-bit 'int',
if A, B and *R are all of type 'short' then INT_ADD_OVERFLOW (A, B)
returns false because the addition cannot overflow after A and B
are converted to 'int', whereas INT_ADD_WRAPV (A, B, R) returns
true or false depending on whether the sum fits into 'short'.
These macros are tuned for their last input argument being a constant.
A, B, and *R should be integers; they need not be the same type,
and they need not be all signed or all unsigned.
However, none of the integer types should be bit-precise,
and *R's type should not be char, bool, or an enumeration type.
Return 1 if the integer expressions A * B, A - B, -A, A * B, A / B,
A % B, and A << B would overflow, respectively. */
@ -295,8 +275,7 @@
_GL_BINARY_OP_OVERFLOW (a, b, _GL_ADD_OVERFLOW)
#define INT_SUBTRACT_OVERFLOW(a, b) \
_GL_BINARY_OP_OVERFLOW (a, b, _GL_SUBTRACT_OVERFLOW)
#define INT_NEGATE_OVERFLOW(a) \
INT_NEGATE_RANGE_OVERFLOW (a, _GL_INT_MINIMUM (a), _GL_INT_MAXIMUM (a))
#define INT_NEGATE_OVERFLOW(a) _GL_INT_NEGATE_OVERFLOW (a)
#define INT_MULTIPLY_OVERFLOW(a, b) \
_GL_BINARY_OP_OVERFLOW (a, b, _GL_MULTIPLY_OVERFLOW)
#define INT_DIVIDE_OVERFLOW(a, b) \
@ -313,7 +292,44 @@
Arguments should be free of side effects. */
#define _GL_BINARY_OP_OVERFLOW(a, b, op_result_overflow) \
op_result_overflow (a, b, \
_GL_INT_MINIMUM (0 * (b) + (a)), \
_GL_INT_MAXIMUM (0 * (b) + (a)))
_GL_INT_MINIMUM (_GL_INT_CONVERT (a, b)), \
_GL_INT_MAXIMUM (_GL_INT_CONVERT (a, b)))
/* Store the low-order bits of A + B, A - B, A * B, respectively, into *R.
Return 1 if the result overflows. See above for restrictions. */
#define INT_ADD_WRAPV(a, b, r) _GL_INT_ADD_WRAPV (a, b, r)
#define INT_SUBTRACT_WRAPV(a, b, r) _GL_INT_SUBTRACT_WRAPV (a, b, r)
#define INT_MULTIPLY_WRAPV(a, b, r) _GL_INT_MULTIPLY_WRAPV (a, b, r)
/* The following macros compute A + B, A - B, and A * B, respectively.
If no overflow occurs, they set *R to the result and return 1;
otherwise, they return 0 and may modify *R.
Example usage:
long int result;
if (INT_ADD_OK (a, b, &result))
printf ("result is %ld\n", result);
else
printf ("overflow\n");
A, B, and *R should be integers; they need not be the same type,
and they need not be all signed or all unsigned.
However, none of the integer types should be bit-precise,
and *R's type should not be char, bool, or an enumeration type.
These macros work correctly on all known practical hosts, and do not rely
on undefined behavior due to signed arithmetic overflow.
These macros are not constant expressions.
These macros may evaluate their arguments zero or multiple times, so the
arguments should not have side effects.
These macros are tuned for B being a constant. */
#define INT_ADD_OK(a, b, r) (! INT_ADD_WRAPV (a, b, r))
#define INT_SUBTRACT_OK(a, b, r) (! INT_SUBTRACT_WRAPV (a, b, r))
#define INT_MULTIPLY_OK(a, b, r) (! INT_MULTIPLY_WRAPV (a, b, r))
#endif /* _GL_INTPROPS_H */

1002
gl/inttypes.in.h Normal file
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File diff suppressed because it is too large Load diff

18
gl/itold.c
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@ -1,19 +1,19 @@
/* Replacement for 'int' to 'long double' conversion routine.
Copyright (C) 2011-2013 Free Software Foundation, Inc.
Copyright (C) 2011-2023 Free Software Foundation, Inc.
Written by Bruno Haible <bruno@clisp.org>, 2011.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
GNU Lesser General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#include <config.h>

66
gl/langinfo.in.h
View file

@ -1,22 +1,22 @@
/* Substitute for and wrapper around <langinfo.h>.
Copyright (C) 2009-2013 Free Software Foundation, Inc.
Copyright (C) 2009-2023 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
GNU Lesser General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, see <http://www.gnu.org/licenses/>. */
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/*
* POSIX <langinfo.h> for platforms that lack it or have an incomplete one.
* <http://www.opengroup.org/onlinepubs/9699919799/basedefs/langinfo.h.html>
* <https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/langinfo.h.html>
*/
#ifndef _@GUARD_PREFIX@_LANGINFO_H
@ -49,7 +49,10 @@ typedef int nl_item;
# define CODESET 10000
/* nl_langinfo items of the LC_NUMERIC category */
# define RADIXCHAR 10001
# define DECIMAL_POINT RADIXCHAR
# define THOUSEP 10002
# define THOUSANDS_SEP THOUSEP
# define GROUPING 10114
/* nl_langinfo items of the LC_TIME category */
# define D_T_FMT 10003
# define D_FMT 10004
@ -83,6 +86,18 @@ typedef int nl_item;
# define MON_10 (MON_1 + 9)
# define MON_11 (MON_1 + 10)
# define MON_12 (MON_1 + 11)
# define ALTMON_1 10200
# define ALTMON_2 (ALTMON_1 + 1)
# define ALTMON_3 (ALTMON_1 + 2)
# define ALTMON_4 (ALTMON_1 + 3)
# define ALTMON_5 (ALTMON_1 + 4)
# define ALTMON_6 (ALTMON_1 + 5)
# define ALTMON_7 (ALTMON_1 + 6)
# define ALTMON_8 (ALTMON_1 + 7)
# define ALTMON_9 (ALTMON_1 + 8)
# define ALTMON_10 (ALTMON_1 + 9)
# define ALTMON_11 (ALTMON_1 + 10)
# define ALTMON_12 (ALTMON_1 + 11)
# define ABMON_1 10035
# define ABMON_2 (ABMON_1 + 1)
# define ABMON_3 (ABMON_1 + 2)
@ -102,6 +117,21 @@ typedef int nl_item;
# define ALT_DIGITS 10051
/* nl_langinfo items of the LC_MONETARY category */
# define CRNCYSTR 10052
# define CURRENCY_SYMBOL CRNCYSTR
# define INT_CURR_SYMBOL 10100
# define MON_DECIMAL_POINT 10101
# define MON_THOUSANDS_SEP 10102
# define MON_GROUPING 10103
# define POSITIVE_SIGN 10104
# define NEGATIVE_SIGN 10105
# define FRAC_DIGITS 10106
# define INT_FRAC_DIGITS 10107
# define P_CS_PRECEDES 10108
# define N_CS_PRECEDES 10109
# define P_SEP_BY_SPACE 10110
# define N_SEP_BY_SPACE 10111
# define P_SIGN_POSN 10112
# define N_SIGN_POSN 10113
/* nl_langinfo items of the LC_MESSAGES category */
# define YESEXPR 10053
# define NOEXPR 10054
@ -120,6 +150,22 @@ typedef int nl_item;
# define GNULIB_defined_T_FMT_AMPM 1
# endif
# if !@HAVE_LANGINFO_ALTMON@
# define ALTMON_1 10200
# define ALTMON_2 (ALTMON_1 + 1)
# define ALTMON_3 (ALTMON_1 + 2)
# define ALTMON_4 (ALTMON_1 + 3)
# define ALTMON_5 (ALTMON_1 + 4)
# define ALTMON_6 (ALTMON_1 + 5)
# define ALTMON_7 (ALTMON_1 + 6)
# define ALTMON_8 (ALTMON_1 + 7)
# define ALTMON_9 (ALTMON_1 + 8)
# define ALTMON_10 (ALTMON_1 + 9)
# define ALTMON_11 (ALTMON_1 + 10)
# define ALTMON_12 (ALTMON_1 + 11)
# define GNULIB_defined_ALTMON 1
# endif
# if !@HAVE_LANGINFO_ERA@
# define ERA 10047
# define ERA_D_FMT 10048

82
gl/lc-charset-dispatch.c Normal file
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@ -0,0 +1,82 @@
/* Dispatching based on the current locale's character encoding.
Copyright (C) 2018-2023 Free Software Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by Bruno Haible <bruno@clisp.org>, 2018. */
#include <config.h>
/* Specification. */
#include "lc-charset-dispatch.h"
#if GNULIB_defined_mbstate_t
# include "localcharset.h"
# include "streq.h"
# if GNULIB_WCHAR_SINGLE_LOCALE
/* When we know that the locale does not change, provide a speedup by
caching the value of locale_encoding_classification. */
# define locale_encoding_classification_cached locale_encoding_classification
# else
/* By default, don't make assumptions, hence no caching. */
# define locale_encoding_classification_uncached locale_encoding_classification
# endif
# if GNULIB_WCHAR_SINGLE_LOCALE
static inline
# endif
enc_t
locale_encoding_classification_uncached (void)
{
const char *encoding = locale_charset ();
if (STREQ_OPT (encoding, "UTF-8", 'U', 'T', 'F', '-', '8', 0, 0, 0, 0))
return enc_utf8;
if (STREQ_OPT (encoding, "EUC-JP", 'E', 'U', 'C', '-', 'J', 'P', 0, 0, 0))
return enc_eucjp;
if (STREQ_OPT (encoding, "EUC-KR", 'E', 'U', 'C', '-', 'K', 'R', 0, 0, 0)
|| STREQ_OPT (encoding, "GB2312", 'G', 'B', '2', '3', '1', '2', 0, 0, 0)
|| STREQ_OPT (encoding, "BIG5", 'B', 'I', 'G', '5', 0, 0, 0, 0, 0))
return enc_94;
if (STREQ_OPT (encoding, "EUC-TW", 'E', 'U', 'C', '-', 'T', 'W', 0, 0, 0))
return enc_euctw;
if (STREQ_OPT (encoding, "GB18030", 'G', 'B', '1', '8', '0', '3', '0', 0, 0))
return enc_gb18030;
if (STREQ_OPT (encoding, "SJIS", 'S', 'J', 'I', 'S', 0, 0, 0, 0, 0))
return enc_sjis;
return enc_other;
}
# if GNULIB_WCHAR_SINGLE_LOCALE
static int cached_locale_enc = -1;
enc_t
locale_encoding_classification_cached (void)
{
if (cached_locale_enc < 0)
cached_locale_enc = locale_encoding_classification_uncached ();
return cached_locale_enc;
}
# endif
#else
/* This declaration is solely to ensure that after preprocessing
this file is never empty. */
typedef int dummy;
#endif

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