misc/mprotect.c

   1 /* Copyright (C) 1994-2017 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <http://www.gnu.org/licenses/>.  */
  17
  18 #include <sys/types.h>
  19 #include <sys/mman.h>
  20 #include <errno.h>
  21
  22 /* Change the memory protection of the region starting at ADDR and
  23    extending LEN bytes to PROT.  Returns 0 if successful, -1 for errors
  24    (and sets errno).  */
  25
  26 int
  27 __mprotect (__ptr_t addr, size_t len, int prot)
  28 {
  29   __set_errno (ENOSYS);
  30   return -1;
  31 }
  32 weak_alias (__mprotect, mprotect)
  33
  34 stub_warning (mprotect)