1 /* Copyright (C) 1994-2021 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 <https://www.gnu.org/licenses/>. */
17
18 #include <sys/types.h>
19 #include <sys/mman.h>
20 #include <errno.h>
21 #include <mach.h>
22
23 /* Deallocate any mapping for the region starting at ADDR and extending LEN
24 bytes. Returns 0 if successful, -1 for errors (and sets errno). */
25
26 int
__munmap(void * addr,size_t len)27 __munmap (void *addr, size_t len)
28 {
29 kern_return_t err;
30
31 if (addr == 0)
32 {
33 errno = EINVAL;
34 return -1;
35 }
36
37 if (err = __vm_deallocate (__mach_task_self (),
38 (vm_address_t) addr, (vm_size_t) len))
39 {
40 errno = err;
41 return -1;
42 }
43 return 0;
44 }
45
46 libc_hidden_def (__munmap)
47 weak_alias (__munmap, munmap)
48