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Imported Upstream version 1.4.15

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This commit is contained in:
Jan Wagner 2013-11-26 23:57:29 +01:00
parent 882cdeecca
commit 047baae1ca
386 changed files with 60019 additions and 38317 deletions
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74
gl/open.c
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@ -1,5 +1,5 @@
/* Open a descriptor to a file.
Copyright (C) 2007-2008 Free Software Foundation, Inc.
Copyright (C) 2007-2010 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
@ -38,6 +38,11 @@ orig_open (const char *filename, int flags, mode_t mode)
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#ifndef REPLACE_OPEN_DIRECTORY
# define REPLACE_OPEN_DIRECTORY 0
#endif
int
open (const char *filename, int flags, ...)
@ -51,12 +56,9 @@ open (const char *filename, int flags, ...)
va_list arg;
va_start (arg, flags);
/* If mode_t is narrower than int, use the promoted type (int),
not mode_t. Use sizeof to guess whether mode_t is narrower;
we don't know of any practical counterexamples. */
mode = (sizeof (mode_t) < sizeof (int)
? va_arg (arg, int)
: va_arg (arg, mode_t));
/* We have to use PROMOTED_MODE_T instead of mode_t, otherwise GCC 4
creates crashing code when 'mode_t' is smaller than 'int'. */
mode = va_arg (arg, PROMOTED_MODE_T);
va_end (arg);
}
@ -92,15 +94,38 @@ open (const char *filename, int flags, ...)
{
size_t len = strlen (filename);
if (len > 0 && filename[len - 1] == '/')
{
errno = EISDIR;
return -1;
}
{
errno = EISDIR;
return -1;
}
}
#endif
fd = orig_open (filename, flags, mode);
#if REPLACE_FCHDIR
/* Implementing fchdir and fdopendir requires the ability to open a
directory file descriptor. If open doesn't support that (as on
mingw), we use a dummy file that behaves the same as directories
on Linux (ie. always reports EOF on attempts to read()), and
override fstat() in fchdir.c to hide the fact that we have a
dummy. */
if (REPLACE_OPEN_DIRECTORY && fd < 0 && errno == EACCES
&& (flags & O_ACCMODE) == O_RDONLY)
{
struct stat statbuf;
if (stat (filename, &statbuf) == 0 && S_ISDIR (statbuf.st_mode))
{
/* Maximum recursion depth of 1. */
fd = open ("/dev/null", flags, mode);
if (0 <= fd)
fd = _gl_register_fd (fd, filename);
}
else
errno = EACCES;
}
#endif
#if OPEN_TRAILING_SLASH_BUG
/* If the filename ends in a slash and fd does not refer to a directory,
then fail.
@ -116,24 +141,25 @@ open (const char *filename, int flags, ...)
with ENOTDIR. */
if (fd >= 0)
{
/* We know len is positive, since open did not fail with ENOENT. */
size_t len = strlen (filename);
if (len > 0 && filename[len - 1] == '/')
{
struct stat statbuf;
if (filename[len - 1] == '/')
{
struct stat statbuf;
if (fstat (fd, &statbuf) >= 0 && !S_ISDIR (statbuf.st_mode))
{
close (fd);
errno = ENOTDIR;
return -1;
}
}
if (fstat (fd, &statbuf) >= 0 && !S_ISDIR (statbuf.st_mode))
{
close (fd);
errno = ENOTDIR;
return -1;
}
}
}
#endif
#ifdef FCHDIR_REPLACEMENT
if (fd >= 0)
_gl_register_fd (fd, filename);
#if REPLACE_FCHDIR
if (!REPLACE_OPEN_DIRECTORY && 0 <= fd)
fd = _gl_register_fd (fd, filename);
#endif
return fd;