Release 4.14 arch/x86/include/asm/uaccess_32.h

/* 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);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
17
44.74%
1
16.67%
Andrew Morton
13
34.21%
2
33.33%
Al Viro
6
15.79%
1
16.67%
Ingo Molnar
1
2.63%
1
16.67%
Linus Torvalds
1
2.63%
1
16.67%
Total
38
100.00%
6
100.00%


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();
			__get_user_asm_nozero(*(u8 *)to, from, ret,
					      "b", "b", "=q", 1);
			__uaccess_end();
			return ret;
		case 2:
			ret = 0;
			__uaccess_begin();
			__get_user_asm_nozero(*(u16 *)to, from, ret,
					      "w", "w", "=r", 2);
			__uaccess_end();
			return ret;
		case 4:
			ret = 0;
			__uaccess_begin();
			__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);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Hiro Yoshioka
112
65.50%
1
33.33%
Al Viro
41
23.98%
1
33.33%
Linus Torvalds
18
10.53%
1
33.33%
Total
171
100.00%
3
100.00%


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);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Hiro Yoshioka
30
93.75%
1
50.00%
Neil Brown
2
6.25%
1
50.00%
Total
32
100.00%
2
100.00%

#endif /* _ASM_X86_UACCESS_32_H */
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Hiro Yoshioka
142
47.33%
1
6.67%
Al Viro
48
16.00%
1
6.67%
Neil Brown
37
12.33%
1
6.67%
Linus Torvalds (pre-git)
29
9.67%
3
20.00%
Linus Torvalds
19
6.33%
2
13.33%
Andrew Morton
17
5.67%
3
20.00%
H. Peter Anvin
6
2.00%
2
13.33%
Ingo Molnar
1
0.33%
1
6.67%
Greg Kroah-Hartman
1
0.33%
1
6.67%
Total
300
100.00%
15
100.00%
Directory: arch/x86/include/asm

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