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/* Provide a stub lchown function for systems that lack it.
Copyright (C) 1998, 1999, 2002, 2004 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 */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#include "lchown.h"
#include "stat-macros.h"
/* Declare chown to avoid a warning. Don't include unistd.h,
because it may have a conflicting prototype for lchown. */
int chown ();
/* Work just like chown, except when FILE is a symbolic link.
In that case, set errno to EOPNOTSUPP and return -1.
But if autoconf tests determined that chown modifies
symlinks, then just call chown. */
int
lchown (const char *file, uid_t uid, gid_t gid)
{
#if ! CHOWN_MODIFIES_SYMLINK
struct stat stats;
if (lstat (file, &stats) == 0 && S_ISLNK (stats.st_mode))
{
errno = EOPNOTSUPP;
return -1;
}
#endif
return chown (file, uid, gid);
}
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