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-rw-r--r--gnu/lstat.c93
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diff --git a/gnu/lstat.c b/gnu/lstat.c
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-/* -*- buffer-read-only: t -*- vi: set ro: */
-/* DO NOT EDIT! GENERATED AUTOMATICALLY! */
-/* Work around a bug of lstat on some systems
-
- Copyright (C) 1997-2006, 2008-2010 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
- 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/>. */
-
-/* written by Jim Meyering */
-
-#include <config.h>
-
-#if !HAVE_LSTAT
-/* On systems that lack symlinks, our replacement <sys/stat.h> already
- defined lstat as stat, so there is nothing further to do other than
- avoid an empty file. */
-typedef int dummy;
-#else /* HAVE_LSTAT */
-
-/* Get the original definition of lstat. It might be defined as a macro. */
-# define __need_system_sys_stat_h
-# include <sys/types.h>
-# include <sys/stat.h>
-# undef __need_system_sys_stat_h
-
-static inline int
-orig_lstat (const char *filename, struct stat *buf)
-{
- return lstat (filename, buf);
-}
-
-/* Specification. */
-# include <sys/stat.h>
-
-# include <string.h>
-# include <errno.h>
-
-/* lstat works differently on Linux and Solaris systems. POSIX (see
- `pathname resolution' in the glossary) requires that programs like
- `ls' take into consideration the fact that FILE has a trailing slash
- when FILE is a symbolic link. On Linux and Solaris 10 systems, the
- lstat function already has the desired semantics (in treating
- `lstat ("symlink/", sbuf)' just like `lstat ("symlink/.", sbuf)',
- but on Solaris 9 and earlier it does not.
-
- If FILE has a trailing slash and specifies a symbolic link,
- then use stat() to get more info on the referent of FILE.
- If the referent is a non-directory, then set errno to ENOTDIR
- and return -1. Otherwise, return stat's result. */
-
-int
-rpl_lstat (const char *file, struct stat *sbuf)
-{
- size_t len;
- int lstat_result = orig_lstat (file, sbuf);
-
- if (lstat_result != 0)
- return lstat_result;
-
- /* This replacement file can blindly check against '/' rather than
- using the ISSLASH macro, because all platforms with '\\' either
- lack symlinks (mingw) or have working lstat (cygwin) and thus do
- not compile this file. 0 len should have already been filtered
- out above, with a failure return of ENOENT. */
- len = strlen (file);
- if (file[len - 1] != '/' || S_ISDIR (sbuf->st_mode))
- return 0;
-
- /* At this point, a trailing slash is only permitted on
- symlink-to-dir; but it should have found information on the
- directory, not the symlink. Call stat() to get info about the
- link's referent. Our replacement stat guarantees valid results,
- even if the symlink is not pointing to a directory. */
- if (!S_ISLNK (sbuf->st_mode))
- {
- errno = ENOTDIR;
- return -1;
- }
- return stat (file, sbuf);
-}
-
-#endif /* HAVE_LSTAT */