libsyscall/wrappers/unix03/munmap.c

   1 /*
   2  * Copyright (c) 2012 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23
  24 #include <sys/cdefs.h>
  25
  26 #if __DARWIN_UNIX03
  27
  28 #include <sys/mman.h>
  29 #include <mach/mach_init.h>
  30 #include "stack_logging_internal.h"
  31
  32 /*
  33  * munmap stub, for stack logging of VM allocations.
  34  *
  35  * This is for UNIX03 only.
  36  */
  37 extern int __munmap(void *, size_t);
  38
  39 int
  40 munmap(void *addr, size_t len)
  41 {
  42         if (__syscall_logger) {
  43                 __syscall_logger(stack_logging_type_vm_deallocate, (uintptr_t)mach_task_self(), (uintptr_t)addr, len, 0, 0);
  44         }
  45
  46         int result = __munmap(addr, len);
  47
  48         return result;
  49 }
  50
  51 #endif /* __DARWIN_UNIX03 */