You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
31 lines
746 B
31 lines
746 B
19 years ago
|
/*
|
||
|
|
* Copyright (C) 2001 Chris Emerson (cemerson@chiark.greenend.org.uk)
|
||
|
|
* Copyright (C) 2001, 2002 Jeff Dike (jdike@karaya.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"
|
||
|
|
|
||
|
|
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, void **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);
|
||
|
|
else return(n - (fault - (unsigned long) to));
|
||
|
|
}
|