kc3-lang/gnulib/lib/lstat.c

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• Hash : 0632e115
  Author :
  Date : 2006-09-13T22:38:14
  

  * _fpending.c: Include <config.h> unconditionally, since we no
  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:
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• lib/lstat.c

• /* Work around a bug of lstat on some systems
  
     Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 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 2, 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, write to the Free Software Foundation,
     Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
  
  /* written by Jim Meyering */
  
  #include <config.h>
  
  /* The specification of these functions is in sys_stat.h.  But we cannot
     include this include file here, because on some systems, a
     "#define lstat lstat64" is being used, and sys_stat.h deletes this
     definition.  */
  
  #include <sys/types.h>
  #include <sys/stat.h>
  #include <string.h>
  #include <errno.h>
  
  #include "stat-macros.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 = lstat (file, sbuf);
  
    if (lstat_result != 0 || !S_ISLNK (sbuf->st_mode))
      return lstat_result;
  
    len = strlen (file);
    if (len == 0 || file[len - 1] != '/')
      return 0;
  
    /* FILE refers to a symbolic link and the name ends with a slash.
       Call stat() to get info about the link's referent.  */
  
    /* If stat fails, then we do the same.  */
    if (stat (file, sbuf) != 0)
      return -1;
  
    /* If FILE references a directory, return 0.  */
    if (S_ISDIR (sbuf->st_mode))
      return 0;
  
    /* Here, we know stat succeeded and FILE references a non-directory.
       But it was specified via a name including a trailing slash.
       Fail with errno set to ENOTDIR to indicate the contradiction.  */
    errno = ENOTDIR;
    return -1;
  }
  

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