Contributors: 10
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Hiro Yoshioka |
142 |
47.33% |
1 |
6.25% |
| Al Viro |
48 |
16.00% |
1 |
6.25% |
| Neil Brown |
37 |
12.33% |
1 |
6.25% |
| Linus Torvalds (pre-git) |
29 |
9.67% |
3 |
18.75% |
| Andrew Morton |
17 |
5.67% |
3 |
18.75% |
| Linus Torvalds |
16 |
5.33% |
2 |
12.50% |
| H. Peter Anvin |
6 |
2.00% |
2 |
12.50% |
| Dan J Williams |
3 |
1.00% |
1 |
6.25% |
| Ingo Molnar |
1 |
0.33% |
1 |
6.25% |
| Greg Kroah-Hartman |
1 |
0.33% |
1 |
6.25% |
| Total |
300 |
|
16 |
|
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_X86_UACCESS_32_H
#define _ASM_X86_UACCESS_32_H
/*
* User space memory access functions
*/
#include <linux/string.h>
#include <asm/asm.h>
#include <asm/page.h>
unsigned long __must_check __copy_user_ll
(void *to, const void *from, unsigned long n);
unsigned long __must_check __copy_from_user_ll_nocache_nozero
(void *to, const void __user *from, unsigned long n);
static __always_inline unsigned long __must_check
raw_copy_to_user(void __user *to, const void *from, unsigned long n)
{
return __copy_user_ll((__force void *)to, from, n);
}
static __always_inline unsigned long
raw_copy_from_user(void *to, const void __user *from, unsigned long n)
{
if (__builtin_constant_p(n)) {
unsigned long ret;
switch (n) {
case 1:
ret = 0;
__uaccess_begin_nospec();
__get_user_asm_nozero(*(u8 *)to, from, ret,
"b", "b", "=q", 1);
__uaccess_end();
return ret;
case 2:
ret = 0;
__uaccess_begin_nospec();
__get_user_asm_nozero(*(u16 *)to, from, ret,
"w", "w", "=r", 2);
__uaccess_end();
return ret;
case 4:
ret = 0;
__uaccess_begin_nospec();
__get_user_asm_nozero(*(u32 *)to, from, ret,
"l", "k", "=r", 4);
__uaccess_end();
return ret;
}
}
return __copy_user_ll(to, (__force const void *)from, n);
}
static __always_inline unsigned long
__copy_from_user_inatomic_nocache(void *to, const void __user *from,
unsigned long n)
{
return __copy_from_user_ll_nocache_nozero(to, from, n);
}
#endif /* _ASM_X86_UACCESS_32_H */