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glibc  2.9
lchown.c
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00001 /* Copyright (C) 1991, 92, 94, 95, 96, 97 Free Software Foundation, Inc.
00002    This file is part of the GNU C Library.
00003 
00004    The GNU C Library is free software; you can redistribute it and/or
00005    modify it under the terms of the GNU Lesser General Public
00006    License as published by the Free Software Foundation; either
00007    version 2.1 of the License, or (at your option) any later version.
00008 
00009    The GNU C Library is distributed in the hope that it will be useful,
00010    but WITHOUT ANY WARRANTY; without even the implied warranty of
00011    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012    Lesser General Public License for more details.
00013 
00014    You should have received a copy of the GNU Lesser General Public
00015    License along with the GNU C Library; if not, write to the Free
00016    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00017    02111-1307 USA.  */
00018 
00019 #include <errno.h>
00020 #include <stddef.h>
00021 #include <unistd.h>
00022 #include <hurd.h>
00023 #include <fcntl.h>
00024 
00025 /* Change the owner and group of FILE; if it's a link, do the link and
00026    not the target.  */
00027 int
00028 __lchown (file, owner, group)
00029      const char *file;
00030      uid_t owner;
00031      gid_t group;
00032 {
00033   error_t err;
00034   file_t port = __file_name_lookup (file, O_NOLINK, 0);
00035   if (port == MACH_PORT_NULL)
00036     return -1;
00037   err = __file_chown (port, owner, group);
00038   __mach_port_deallocate (__mach_task_self (), port);
00039   if (err)
00040     return __hurd_fail (err);
00041   return 0;
00042 }
00043 
00044 weak_alias (__lchown, lchown)