1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
|
/* mlock -- guarantee pages are resident in memory. 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>
/* Guarantee all whole pages mapped by the range [ADDR,ADDR+LEN) to
be memory resident. */
int
mlock (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_ALL); /* XXX ? */
__mach_port_deallocate (__mach_task_self (), hostpriv);
return err ? __hurd_fail (err) : 0;
}
|
