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