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/* Provide a stub lchown function for systems that lack it.
Copyright (C) 1998, 1999, 2002 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* written by Jim Meyering */
#include <config.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#ifndef errno
extern int errno;
#endif
#include "lchown.h"
#ifdef STAT_MACROS_BROKEN
# undef S_ISLNK
#endif
#ifndef S_ISLNK
# ifdef S_IFLNK
# define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK)
# else
# define S_ISLNK(m) 0
# endif
#endif
/* 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 ENOSYS and return -1. */
int
lchown (const char *file, uid_t uid, gid_t gid)
{
struct stat stats;
if (lstat (file, &stats) == 0 && S_ISLNK (stats.st_mode))
{
errno = ENOSYS;
return -1;
}
return chown (file, uid, gid);
}
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