uaccess.h File Reference

#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/string.h>
#include <asm/segment.h>

Go to the source code of this file.

Data Structures
struct	exception_table_entry

Macros
#define	VERIFY_READ   0
#define	VERIFY_WRITE   1
#define	access_ok(type, addr, size)   __access_ok((unsigned long)addr,size)
#define	RANGE_CHECK_OK(addr, size, lower, upper)   (((addr) >= (lower)) && (((addr) + (size)) < (upper)))
#define	put_user(x, ptr)
#define	__put_user(x, ptr)   put_user(x, ptr)
#define	__ptr(x)   ((unsigned long *)(x))
#define	get_user(x, ptr)
#define	__get_user(x, ptr)   get_user(x, ptr)
#define	copy_from_user(to, from, n)   (memcpy(to, from, n), 0)
#define	copy_to_user(to, from, n)   (memcpy(to, from, n), 0)
#define	__copy_from_user(to, from, n)   copy_from_user(to, from, n)
#define	__copy_to_user(to, from, n)   copy_to_user(to, from, n)
#define	__copy_to_user_inatomic   __copy_to_user
#define	__copy_from_user_inatomic   __copy_from_user
#define	copy_to_user_ret(to, from, n, retval)   ({ if (copy_to_user(to,from,n)) return retval; })
#define	copy_from_user_ret(to, from, n, retval)   ({ if (copy_from_user(to,from,n)) return retval; })
#define	strlen_user(str)   strnlen_user(str, 32767)
#define	__clear_user   clear_user

Functions
unsigned long	search_exception_table (unsigned long)
int	__put_user_bad (void)
int	__get_user_bad (void)

Macro Definition Documentation

#define __clear_user   clear_user

Definition at line 161 of file uaccess.h.

#define __copy_from_user	(		to,
			from,
			n
	)		copy_from_user(to, from, n)

Definition at line 115 of file uaccess.h.

#define __copy_from_user_inatomic   __copy_from_user

Definition at line 118 of file uaccess.h.

#define __copy_to_user	(		to,
			from,
			n
	)		copy_to_user(to, from, n)

Definition at line 116 of file uaccess.h.

#define __copy_to_user_inatomic   __copy_to_user

Definition at line 117 of file uaccess.h.

#define __get_user	(		x,
			ptr
	)		get_user(x, ptr)

Definition at line 108 of file uaccess.h.

#define __ptr

(

x

)

((unsigned long *)(x))

Definition at line 83 of file uaccess.h.

#define __put_user	(		x,
			ptr
	)		put_user(x, ptr)

Definition at line 73 of file uaccess.h.

#define access_ok	(		type,
			addr,
			size
	)		__access_ok((unsigned long)addr,size)

Definition at line 17 of file uaccess.h.

#define copy_from_user	(		to,
			from,
			n
	)		(memcpy(to, from, n), 0)

Definition at line 112 of file uaccess.h.

#define copy_from_user_ret	(		to,
			from,
			n,
			retval
	)		({ if (copy_from_user(to,from,n)) return retval; })

Definition at line 122 of file uaccess.h.

#define copy_to_user	(		to,
			from,
			n
	)		(memcpy(to, from, n), 0)

Definition at line 113 of file uaccess.h.

#define copy_to_user_ret	(		to,
			from,
			n,
			retval
	)		({ if (copy_to_user(to,from,n)) return retval; })

Definition at line 120 of file uaccess.h.

#define get_user	(		x,
			ptr
	)

Value:

({                              \
    int __gu_err = 0;                       \
    typeof(*(ptr)) __gu_val = *ptr;             \
    switch (sizeof(*(ptr))) {                   \
    case 1:                         \
    case 2:                         \
    case 4:                         \
    case 8:                             \
    break;                          \
    default:                            \
    __gu_err = __get_user_bad();                \
    break;                          \
    }                               \
    (x) = __gu_val;                     \
    __gu_err;                           \
})

Definition at line 91 of file uaccess.h.

#define put_user	(		x,
			ptr
	)

Value:

({                          \
    int __pu_err = 0;                   \
    typeof(*(ptr)) __pu_val = (x);          \
    switch (sizeof (*(ptr))) {              \
    case 1:                     \
    case 2:                     \
    case 4:                     \
    *(ptr) = (__pu_val);                    \
    break;                      \
    case 8:                     \
    memcpy(ptr, &__pu_val, sizeof (*(ptr)));        \
    break;                      \
    default:                        \
    __pu_err = __put_user_bad();            \
    break;                      \
    }                           \
    __pu_err;                       \
})

Definition at line 54 of file uaccess.h.

#define RANGE_CHECK_OK	(		addr,
			size,
			lower,
			upper
	)		(((addr) >= (lower)) && (((addr) + (size)) < (upper)))

#define strlen_user

(

str

)

strnlen_user(str, 32767)

Definition at line 148 of file uaccess.h.

#define VERIFY_READ   0

Definition at line 13 of file uaccess.h.

#define VERIFY_WRITE   1

Definition at line 14 of file uaccess.h.

Function Documentation

int __get_user_bad

(

void

)

int __put_user_bad

(

void

)

unsigned long search_exception_table

(

unsigned

long

)

Definition at line 43 of file extable.c.