sysdeps/mach/hurd/munlockall.c

   1 /* munlockall -- undo the effects of all prior mlock calls.  Hurd version.
   2    Copyright (C) 2001-2024 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 <sys/types.h>
  20 #include <sys/mman.h>
  21 #include <errno.h>
  22 #include <hurd.h>
  23 #include <mach/mach_host.h>
  24
  25 /* Undo the effects of all prior mlock calls in this process.  */
  26
  27 int
  28 munlockall (void)
  29 {
  30   mach_port_t host;
  31   error_t err;
  32
  33   err = __get_privileged_ports (&host, NULL);
  34   if (err)
  35     return __hurd_fail (err);
  36
  37   err = __vm_wire_all (host, __mach_task_self (), VM_WIRE_NONE);
  38   __mach_port_deallocate (__mach_task_self (), host);
  39   return err ? __hurd_fail (err) : 0;
  40 }