sysdeps/mach/hurd/revoke.c

   1 /* Revoke the access of all descriptors currently open on a file.  Hurd version
   2    Copyright (C) 1999 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, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #include <unistd.h>
  21 #include <errno.h>
  22 #include <hurd.h>
  23
  24 int
  25 revoke (file_name)
  26      const char *file_name;
  27 {
  28   error_t err;
  29   file_t file = __file_name_lookup (file_name, 0, 0);
  30
  31   if (file == MACH_PORT_NULL)
  32     return -1;
  33
  34   err = __io_revoke (file);
  35   __mach_port_deallocate (__mach_task_self (), file);
  36
  37   if (err)
  38     return __hurd_fail (err);
  39   return 0;
  40 }