blob: dd33f040c52631bb1c5b5dd1a0b659b8e9693f4b [file] [log] [blame]
* Copyright (C) 2001 Chris Emerson (
* Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,}.com)
* Licensed under the GPL
* These are here rather than tt/uaccess.c because skas mode needs them in
* order to do SIGBUS recovery when a tmpfs mount runs out of room.
#include <linux/string.h>
#include "os.h"
static void __do_copy(void *to, const void *from, int n)
memcpy(to, from, n);
int __do_copy_to_user(void *to, const void *from, int n,
void **fault_addr, jmp_buf **fault_catcher)
unsigned long fault;
int faulted;
fault = __do_user_copy(to, from, n, fault_addr, fault_catcher,
__do_copy, &faulted);
if (!faulted)
return 0;
return n - (fault - (unsigned long) to);