46 lines
1.6 KiB
C
46 lines
1.6 KiB
C
/* munlock -- undo the effects of prior mlock calls. Mach/Hurd version.
|
|
Copyright (C) 2001 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., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/mman.h>
|
|
#include <errno.h>
|
|
#include <hurd.h>
|
|
#include <mach/mach_host.h>
|
|
|
|
/* Undo the effects on these whole pages of any prior mlock calls. */
|
|
|
|
int
|
|
munlock (const void *addr, size_t len)
|
|
{
|
|
mach_port_t hostpriv;
|
|
vm_address_t page;
|
|
error_t err;
|
|
|
|
err = __get_privileged_ports (&hostpriv, NULL);
|
|
if (err)
|
|
return __hurd_fail (EPERM);
|
|
|
|
page = trunc_page ((vm_address_t) addr);
|
|
len = round_page ((vm_address_t) addr + len) - page;
|
|
err = __vm_wire (hostpriv, __mach_task_self (), page, len, VM_PROT_NONE);
|
|
__mach_port_deallocate (__mach_task_self (), hostpriv);
|
|
|
|
return err ? __hurd_fail (err) : 0;
|
|
}
|