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1 | /* Copyright (C) 1994, 1996, 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 Library General Public License as | |
6 | published by the Free Software Foundation; either version 2 of the | |
7 | 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 | Library General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU Library General Public | |
15 | License along with the GNU C Library; see the file COPYING.LIB. If not, | |
16 | write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
17 | Boston, MA 02111-1307, USA. */ | |
28f540f4 RM |
18 | |
19 | #include <sys/types.h> | |
20 | #include <sys/mman.h> | |
21 | #include <errno.h> | |
22 | #include <mach.h> | |
23 | ||
24 | /* Change the memory protection of the region starting at ADDR and | |
25 | extending LEN bytes to PROT. Returns 0 if successful, -1 for errors | |
26 | (and sets errno). */ | |
27 | ||
28 | int | |
f2ea0f5b | 29 | __mprotect (__ptr_t addr, size_t len, int prot) |
28f540f4 RM |
30 | { |
31 | kern_return_t err; | |
32 | vm_prot_t vmprot; | |
33 | ||
34 | vmprot = VM_PROT_NONE; | |
35 | if (prot & PROT_READ) | |
36 | vmprot |= VM_PROT_READ; | |
37 | if (prot & PROT_WRITE) | |
38 | vmprot |= VM_PROT_WRITE; | |
39 | if (prot & PROT_EXEC) | |
40 | vmprot |= VM_PROT_EXECUTE; | |
41 | ||
42 | if (err = __vm_protect (__mach_task_self (), | |
43 | (vm_address_t) addr, (vm_size_t) len, | |
44 | 0, vmprot)) | |
45 | { | |
46 | errno = err; | |
47 | return -1; | |
48 | } | |
49 | return 0; | |
50 | } | |
6d9756c9 | 51 | weak_alias (__mprotect, mprotect) |