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https://https.git.savannah.gnu.org/git/gnulib.git
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Paul Eggert
0632e11574
longer worry about uses that don't define HAVE_CONFIG_H. * acl.c, alloca.c, argmatch.c, atexit.c, backupfile.c: * basename.c, c-stack.c, c-strtod.c, calloc.c, canon-host.c: * canonicalize.c, chdir-long.c, chdir-safer.c, chown.c: * cloexec.c, close-stream.c, closeout.c, creat-safer.c: * cycle-check.c, diacrit.c, dirchownmod.c, dirfd.c, dirname.c: * dup-safer.c, dup2.c, error.c, euidaccess.c, exclude.c: * exitfail.c, fchmodat.c, fchown-stub.c, fd-safer.c: * file-type.c, fileblocks.c, filemode.c, filenamecat.c: * fnmatch.c, fopen-safer.c, fprintftime.c, free.c, fsusage.c: * ftruncate.c, fts-cycle.c, fts.c, full-write.c, gai_strerror.c: * getcwd.c, getdate.y, getdomainname.c, getgroups.c: * gethostname.c, gethrxtime.c, getloadavg.c, getlogin_r.c: * getndelim2.c, getnline.c, getopt.c, getopt1.c, getpass.c: * gettime.c, gettimeofday.c, getugroups.c, getusershell.c: * glob.c, group-member.c, hard-locale.c, hash-pjw.c, hash.c: * human.c, idcache.c, inet_ntop.c, inet_pton.c, inttostr.c: * isdir.c, lchown.c, linebuffer.c, long-options.c, lstat.c: * malloc.c, md5.c, memcasecmp.c, memchr.c, memcmp.c, memcoll.c: * memcpy.c, memmove.c, memrchr.c, mkancesdirs.c, mkdir-p.c: * mkdir.c, mkdirat.c, mkstemp-safer.c, mkstemp.c, modechange.c: * mountlist.c, nanosleep.c, obstack.c, open-safer.c: * openat-die.c, openat.c, pagealign_alloc.c, physmem.c: * pipe-safer.c, posixtm.c, posixver.c, putenv.c, quote.c: * quotearg.c, raise.c, readtokens.c, readtokens0.c, readutmp.c: * realloc.c, regex.c, rename.c, rmdir.c, rpmatch.c, safe-read.c: * same.c, save-cwd.c, savedir.c, setenv.c, settime.c, sha1.c: * sig2str.c, snprintf.c, strdup.c, strerror.c, strftime.c: * stripslash.c, strndup.c, strnlen.c, strpbrk.c, strtod.c: * strtoimax.c, strtol.c, strverscmp.c, tempname.c, time_r.c: * timegm.c, tmpfile-safer.c, unlinkdir.c, userspec.c, utime.c: * utimecmp.c, utimens.c, version-etc-fsf.c, version-etc.c: * xalloc-die.c, xgetcwd.c, xgethostname.c, xmalloc.c: * xmemcoll.c, xnanosleep.c, xreadlink.c, xstrtod.c: * xstrtoimax.c, xstrtol.c, xstrtoumax.c, yesno.c: Likewise.
79 lines
2.7 KiB
C
79 lines
2.7 KiB
C
/* Work around a bug of lstat on some systems
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Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 Free
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Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program 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 General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation,
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Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
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/* written by Jim Meyering */
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#include <config.h>
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/* The specification of these functions is in sys_stat.h. But we cannot
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include this include file here, because on some systems, a
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"#define lstat lstat64" is being used, and sys_stat.h deletes this
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definition. */
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <string.h>
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#include <errno.h>
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#include "stat-macros.h"
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/* lstat works differently on Linux and Solaris systems. POSIX (see
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`pathname resolution' in the glossary) requires that programs like
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`ls' take into consideration the fact that FILE has a trailing slash
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when FILE is a symbolic link. On Linux and Solaris 10 systems, the
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lstat function already has the desired semantics (in treating
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`lstat ("symlink/", sbuf)' just like `lstat ("symlink/.", sbuf)',
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but on Solaris 9 and earlier it does not.
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If FILE has a trailing slash and specifies a symbolic link,
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then use stat() to get more info on the referent of FILE.
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If the referent is a non-directory, then set errno to ENOTDIR
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and return -1. Otherwise, return stat's result. */
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int
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rpl_lstat (const char *file, struct stat *sbuf)
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{
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size_t len;
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int lstat_result = lstat (file, sbuf);
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if (lstat_result != 0 || !S_ISLNK (sbuf->st_mode))
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return lstat_result;
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len = strlen (file);
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if (len == 0 || file[len - 1] != '/')
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return 0;
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/* FILE refers to a symbolic link and the name ends with a slash.
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Call stat() to get info about the link's referent. */
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/* If stat fails, then we do the same. */
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if (stat (file, sbuf) != 0)
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return -1;
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/* If FILE references a directory, return 0. */
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if (S_ISDIR (sbuf->st_mode))
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return 0;
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/* Here, we know stat succeeded and FILE references a non-directory.
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But it was specified via a name including a trailing slash.
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Fail with errno set to ENOTDIR to indicate the contradiction. */
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errno = ENOTDIR;
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return -1;
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}
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