56 lines
1.0 KiB
C
56 lines
1.0 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0 */
|
||
|
|
#ifndef _ASM_UACCESS_H
|
||
|
|
#define _ASM_UACCESS_H
|
||
|
|
|
||
|
|
#include <linux/string.h>
|
||
|
|
|
||
|
|
static inline __must_check unsigned long
|
||
|
|
raw_copy_from_user(void *to, const void __user * from, unsigned long n)
|
||
|
|
{
|
||
|
|
if (__builtin_constant_p(n)) {
|
||
|
|
switch(n) {
|
||
|
|
case 1:
|
||
|
|
*(u8 *)to = *(u8 __force *)from;
|
||
|
|
return 0;
|
||
|
|
case 2:
|
||
|
|
*(u16 *)to = *(u16 __force *)from;
|
||
|
|
return 0;
|
||
|
|
case 4:
|
||
|
|
*(u32 *)to = *(u32 __force *)from;
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
memcpy(to, (const void __force *)from, n);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline __must_check unsigned long
|
||
|
|
raw_copy_to_user(void __user *to, const void *from, unsigned long n)
|
||
|
|
{
|
||
|
|
if (__builtin_constant_p(n)) {
|
||
|
|
switch(n) {
|
||
|
|
case 1:
|
||
|
|
*(u8 __force *)to = *(u8 *)from;
|
||
|
|
return 0;
|
||
|
|
case 2:
|
||
|
|
*(u16 __force *)to = *(u16 *)from;
|
||
|
|
return 0;
|
||
|
|
case 4:
|
||
|
|
*(u32 __force *)to = *(u32 *)from;
|
||
|
|
return 0;
|
||
|
|
default:
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
memcpy((void __force *)to, from, n);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
#define INLINE_COPY_FROM_USER
|
||
|
|
#define INLINE_COPY_TO_USER
|
||
|
|
|
||
|
|
#include <asm-generic/uaccess.h>
|
||
|
|
|
||
|
|
#endif
|