mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-27 07:20:11 +00:00
51 lines
1.5 KiB
C
51 lines
1.5 KiB
C
|
/* Copyright (C) 1994 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 Library General Public License as
|
||
|
|
published by the Free Software Foundation; either version 2 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
|
||
|
|
Library General Public License for more details.
|
||
|
|
|
||
|
|
You should have received a copy of the GNU Library General Public
|
||
|
|
License along with the GNU C Library; see the file COPYING.LIB. If
|
||
|
|
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
|
||
|
|
Cambridge, MA 02139, USA. */
|
||
|
|
|
||
|
|
#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 (caddr_t 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;
|
||
|
|
}
|