arch/x86/include/asm/uaccess_32.h

Source file repositories/reference/linux-study-clean/arch/x86/include/asm/uaccess_32.h

File Facts

System
Linux kernel
Corpus path
arch/x86/include/asm/uaccess_32.h
Extension
.h
Size
1074 bytes
Lines
34
Domain
Architecture Layer
Bucket
arch/x86
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

#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)
{
	return __copy_user_ll(to, (__force const void *)from, n);
}

unsigned long __must_check copy_from_user_inatomic_nontemporal(void *, const void __user *, unsigned long n);
unsigned long __must_check clear_user(void __user *mem, unsigned long len);
unsigned long __must_check __clear_user(void __user *mem, unsigned long len);

#endif /* _ASM_X86_UACCESS_32_H */

Annotation

Implementation Notes