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dff8da6b | 1 | /* Copyright (C) 1994-2024 Free Software Foundation, Inc. |
478b92f0 UD |
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 | |
41bdb6e2 AJ |
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. | |
478b92f0 UD |
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 | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
478b92f0 | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 | 15 | License along with the GNU C Library; if not, see |
5a82c748 | 16 | <https://www.gnu.org/licenses/>. */ |
28f540f4 RM |
17 | |
18 | #include <sys/types.h> | |
19 | #include <sys/mman.h> | |
20 | #include <errno.h> | |
21 | #include <mach.h> | |
22 | ||
23 | /* Change the memory protection of the region starting at ADDR and | |
24 | extending LEN bytes to PROT. Returns 0 if successful, -1 for errors | |
25 | (and sets errno). */ | |
26 | ||
27 | int | |
f17a4233 | 28 | __mprotect (void *addr, size_t len, int prot) |
28f540f4 RM |
29 | { |
30 | kern_return_t err; | |
31 | vm_prot_t vmprot; | |
32 | ||
33 | vmprot = VM_PROT_NONE; | |
34 | if (prot & PROT_READ) | |
35 | vmprot |= VM_PROT_READ; | |
36 | if (prot & PROT_WRITE) | |
37 | vmprot |= VM_PROT_WRITE; | |
38 | if (prot & PROT_EXEC) | |
39 | vmprot |= VM_PROT_EXECUTE; | |
40 | ||
41 | if (err = __vm_protect (__mach_task_self (), | |
42 | (vm_address_t) addr, (vm_size_t) len, | |
43 | 0, vmprot)) | |
44 | { | |
45 | errno = err; | |
46 | return -1; | |
47 | } | |
48 | return 0; | |
49 | } | |
a166531f | 50 | libc_hidden_def (__mprotect) |
6d9756c9 | 51 | weak_alias (__mprotect, mprotect) |