sysdeps/mach/hurd/lchmod.c

   1 /* lchmod -- Change the protections of a file or symbolic link.  Hurd version.
   2    Copyright (C) 2002-2019 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <errno.h>
  20 #include <stddef.h>
  21 #include <sys/stat.h>
  22 #include <fcntl.h>
  23 #include <hurd.h>
  24
  25 /* Change the protections of FILE to MODE.  */
  26 int
  27 lchmod (const char *file, mode_t mode)
  28 {
  29   error_t err;
  30   file_t port = __file_name_lookup (file, O_NOLINK, 0);
  31   if (port == MACH_PORT_NULL)
  32     return -1;
  33   err = __file_chmod (port, mode);
  34   __mach_port_deallocate (__mach_task_self (), port);
  35   if (err)
  36     return __hurd_fail (err);
  37   return 0;
  38 }