sysdeps/mach/munmap.c

   1 /* Copyright (C) 1994, 1995, 1997 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, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 USA.  */
  18
  19 #include <sys/types.h>
  20 #include <sys/mman.h>
  21 #include <errno.h>
  22 #include <mach.h>
  23
  24 /* Deallocate any mapping for the region starting at ADDR and extending LEN
  25    bytes.  Returns 0 if successful, -1 for errors (and sets errno).  */
  26
  27 int
  28 __munmap (__ptr_t addr, size_t len)
  29 {
  30   kern_return_t err;
  31   if (err = __vm_deallocate (__mach_task_self (),
  32                              (vm_address_t) addr, (vm_size_t) len))
  33     {
  34       errno = err;
  35       return -1;
  36     }
  37   return 0;
  38 }
  39
  40 weak_alias (__munmap, munmap)