sysdeps/mach/hurd/fchownat.c

   1 /* Change owner and group of a file relative to open directory.  Hurd version.
   2    Copyright (C) 2006-2023 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    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <errno.h>
  20 #include <fcntl.h>
  21 #include <stddef.h>
  22 #include <unistd.h>
  23 #include <sys/types.h>
  24 #include <hurd.h>
  25 #include <hurd/fd.h>
  26
  27 /* Change the owner and group of FILE.  */
  28 int
  29 __fchownat (int fd, const char *file, uid_t owner, gid_t group, int flag)
  30 {
  31   error_t err;
  32   file_t port = __file_name_lookup_at (fd, flag, file, 0, 0);
  33   if (port == MACH_PORT_NULL)
  34     return -1;
  35   err = __file_chown (port, owner, group);
  36   __mach_port_deallocate (__mach_task_self (), port);
  37   if (err)
  38     return __hurd_fail (err);
  39   return 0;
  40 }
  41 weak_alias (__fchownat, fchownat)