| /* Copyright (C) 1994-2018 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <sys/types.h> |
| #include <sys/mman.h> |
| #include <errno.h> |
| #include <mach.h> |
| |
| /* Change the memory protection of the region starting at ADDR and |
| extending LEN bytes to PROT. Returns 0 if successful, -1 for errors |
| (and sets errno). */ |
| |
| int |
| __mprotect (void *addr, size_t len, int prot) |
| { |
| kern_return_t err; |
| vm_prot_t vmprot; |
| |
| vmprot = VM_PROT_NONE; |
| if (prot & PROT_READ) |
| vmprot |= VM_PROT_READ; |
| if (prot & PROT_WRITE) |
| vmprot |= VM_PROT_WRITE; |
| if (prot & PROT_EXEC) |
| vmprot |= VM_PROT_EXECUTE; |
| |
| if (err = __vm_protect (__mach_task_self (), |
| (vm_address_t) addr, (vm_size_t) len, |
| 0, vmprot)) |
| { |
| errno = err; |
| return -1; |
| } |
| return 0; |
| } |
| libc_hidden_def (__mprotect) |
| weak_alias (__mprotect, mprotect) |
