From 28f540f45bbacd939bfd07f213bcad2bf730b1bf Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Sat, 18 Feb 1995 01:27:10 +0000 Subject: initial import --- sysdeps/mach/mprotect.c | 50 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) create mode 100644 sysdeps/mach/mprotect.c (limited to 'sysdeps/mach/mprotect.c') diff --git a/sysdeps/mach/mprotect.c b/sysdeps/mach/mprotect.c new file mode 100644 index 0000000000..5f1dbe8b5c --- /dev/null +++ b/sysdeps/mach/mprotect.c @@ -0,0 +1,50 @@ +/* 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 +#include +#include +#include + +/* 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; +} -- cgit v1.2.3