1/*
2 * Copyright (C) 2001 Chris Emerson (cemerson@chiark.greenend.org.uk)
3 * Copyright (C) 2001, 2002 Jeff Dike (jdike@karaya.com)
4 * Licensed under the GPL
5 */
6
7/* These are here rather than tt/uaccess.c because skas mode needs them in
8 * order to do SIGBUS recovery when a tmpfs mount runs out of room.
9 */
10
11#include <linux/string.h>
12#include "os.h"
13
14void __do_copy(void *to, const void *from, int n)
15{
16	memcpy(to, from, n);
17}
18
19
20int __do_copy_to_user(void *to, const void *from, int n,
21		      void **fault_addr, void **fault_catcher)
22{
23	unsigned long fault;
24	int faulted;
25
26	fault = __do_user_copy(to, from, n, fault_addr, fault_catcher,
27			       __do_copy, &faulted);
28	if(!faulted) return(0);
29	else return(n - (fault - (unsigned long) to));
30}
31