misc/mlock.c

   1 /* mlock -- guarantee pages are resident in memory.  Stub version.
   2    Copyright (C) 2001-2023 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 <sys/types.h>
  20 #include <sys/mman.h>
  21 #include <errno.h>
  22
  23 /* Guarantee all whole pages mapped by the range [ADDR,ADDR+LEN) to
  24    be memory resident.  */
  25
  26 int
  27 mlock (const void *addr, size_t len)
  28 {
  29   __set_errno (ENOSYS);
  30   return -1;
  31 }
  32
  33 stub_warning (mlock)