sysdeps/mach/hurd/revoke.c

   1 /* Revoke the access of all descriptors currently open on a file.  Hurd version
   2    Copyright (C) 1999-2016 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 <unistd.h>
  20 #include <errno.h>
  21 #include <hurd.h>
  22
  23 int
  24 revoke (const char *file_name)
  25 {
  26   error_t err;
  27   file_t file = __file_name_lookup (file_name, 0, 0);
  28
  29   if (file == MACH_PORT_NULL)
  30     return -1;
  31
  32   err = __io_revoke (file);
  33   __mach_port_deallocate (__mach_task_self (), file);
  34
  35   if (err)
  36     return __hurd_fail (err);
  37   return 0;
  38 }