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53 lines
1.6 KiB
C
53 lines
1.6 KiB
C
/* Provide a stub lchown function for systems that lack it.
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Copyright (C) 1998, 1999, 2002, 2004 Free 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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/* written by Jim Meyering */
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#include <config.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <errno.h>
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#include "lchown.h"
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#include "stat-macros.h"
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/* Declare chown to avoid a warning. Don't include unistd.h,
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because it may have a conflicting prototype for lchown. */
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int chown ();
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/* Work just like chown, except when FILE is a symbolic link.
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In that case, set errno to EOPNOTSUPP and return -1.
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But if autoconf tests determined that chown modifies
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symlinks, then just call chown. */
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int
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lchown (const char *file, uid_t uid, gid_t gid)
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{
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#if ! CHOWN_MODIFIES_SYMLINK
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struct stat stats;
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if (lstat (file, &stats) == 0 && S_ISLNK (stats.st_mode))
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{
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errno = EOPNOTSUPP;
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return -1;
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}
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#endif
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return chown (file, uid, gid);
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}
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