#include <linux/compiler.h>
#include <linux/errno.h>
#include <linux/sched.h>
#include <linux/page-flags.h>
#include <linux/mm.h>
#include <asm/intrinsics.h>
#include <asm/pgtable.h>
#include <asm/io.h>

Data Structures
struct	exception_table_entry

Macros
#define	KERNEL_DS ((mm_segment_t) { ~0UL }) /* cf. access_ok() */

#define	USER_DS ((mm_segment_t) { TASK_SIZE-1 }) /* cf. access_ok() */

#define	VERIFY_READ 0

#define	VERIFY_WRITE 1

#define	get_ds() (KERNEL_DS)

#define	get_fs() (current_thread_info()->addr_limit)

#define	set_fs(x) (current_thread_info()->addr_limit = (x))

#define	segment_eq(a, b) ((a).seg == (b).seg)

#define	__access_ok(addr, size, segment)

#define	access_ok(type, addr, size) __access_ok((addr), (size), get_fs())

#define	put_user(x, ptr) __put_user_check((__typeof__((ptr))) (x), (ptr), sizeof((ptr)), get_fs())

#define	get_user(x, ptr) __get_user_check((x), (ptr), sizeof(*(ptr)), get_fs())

#define	__put_user(x, ptr) __put_user_nocheck((__typeof__((ptr))) (x), (ptr), sizeof((ptr)))

#define	__get_user(x, ptr) __get_user_nocheck((x), (ptr), sizeof(*(ptr)))

#define	__put_user_unaligned(x, ptr)

#define	__get_user_unaligned(x, ptr)

#define	RELOC_TYPE 2 /* ip-rel */

#define	__get_user_size(val, addr, n, err)

#define	__put_user_size(val, addr, n, err)

#define	__do_get_user(check, x, ptr, size, segment)

#define	__get_user_nocheck(x, ptr, size) __do_get_user(0, x, ptr, size, KERNEL_DS)

#define	__get_user_check(x, ptr, size, segment) __do_get_user(1, x, ptr, size, segment)

#define	__do_put_user(check, x, ptr, size, segment)

#define	__put_user_nocheck(x, ptr, size) __do_put_user(0, x, ptr, size, KERNEL_DS)

#define	__put_user_check(x, ptr, size, segment) __do_put_user(1, x, ptr, size, segment)

#define	__copy_to_user_inatomic __copy_to_user

#define	__copy_from_user_inatomic __copy_from_user

#define	copy_to_user(to, from, n)

#define	copy_from_user(to, from, n)

#define	__copy_in_user(to, from, size) __copy_user((to), (from), (size))

#define	__clear_user(to, n) __do_clear_user(to, n)

#define	clear_user(to, n)

#define	strncpy_from_user(to, from, n)

#define	strlen_user(str)

#define	strnlen_user(str, len)

#define	ARCH_HAS_SORT_EXTABLE

#define	ARCH_HAS_SEARCH_EXTABLE

#define	ARCH_HAS_TRANSLATE_MEM_PTR 1

Functions
long	__put_user_unaligned_unknown (void)

long	__get_user_unaligned_unknown (void)

void	__get_user_unknown (void)

void	__put_user_unknown (void)

unsigned long __must_check	__copy_user (void __user to, const void __user from, unsigned long count)

unsigned long	__do_clear_user (void __user *, unsigned long)

long __must_check	__strncpy_from_user (char to, const char __user from, long to_len)

unsigned long	__strlen_user (const char __user *)

unsigned long	__strnlen_user (const char __user *, long)

void	ia64_handle_exception (struct pt_regs regs, const struct exception_table_entry e)

struct exception_table_entry *	search_exception_tables (unsigned long addr)

Macro Definition Documentation

#define __access_ok	(	addr,
		size,
		segment
	)

Value:

({                                          \
    __chk_user_ptr(addr);                               \
    (likely((unsigned long) (addr) <= (segment).seg)                \
     && ((segment).seg == KERNEL_DS.seg                     \
         || likely(REGION_OFFSET((unsigned long) (addr)) < RGN_MAP_LIMIT)));    \
})

Definition at line 66 of file uaccess.h.

#define __clear_user	(	to,
		n
	)	__do_clear_user(to, n)

Definition at line 289 of file uaccess.h.

#define __copy_from_user_inatomic __copy_from_user

Definition at line 253 of file uaccess.h.

#define __copy_in_user	(	to,
		from,
		size
	)	__copy_user((to), (from), (size))

Definition at line 277 of file uaccess.h.

#define __copy_to_user_inatomic __copy_to_user

Definition at line 252 of file uaccess.h.

#define __do_get_user	(	check,
		x,
		ptr,
		size,
		segment
	)

Value:

({                                          \
    const __typeof__(*(ptr)) __user *__gu_ptr = (ptr);              \
    __typeof__ (size) __gu_size = (size);                       \
    long __gu_err = -EFAULT;                            \
    unsigned long __gu_val = 0;                         \
    if (!check || __access_ok(__gu_ptr, size, segment))             \
        switch (__gu_size) {                            \
              case 1: __get_user_size(__gu_val, __gu_ptr, 1, __gu_err); break;  \
              case 2: __get_user_size(__gu_val, __gu_ptr, 2, __gu_err); break;  \
              case 4: __get_user_size(__gu_val, __gu_ptr, 4, __gu_err); break;  \
              case 8: __get_user_size(__gu_val, __gu_ptr, 8, __gu_err); break;  \
              default: __get_user_unknown(); break;             \
        }                                   \
    (x) = (__typeof__(*(__gu_ptr))) __gu_val;                   \
    __gu_err;                                   \
})

Definition at line 186 of file uaccess.h.

#define __do_put_user	(	check,
		x,
		ptr,
		size,
		segment
	)

Value:

({                                          \
    __typeof__ (x) __pu_x = (x);                            \
    __typeof__ (*(ptr)) __user *__pu_ptr = (ptr);                   \
    __typeof__ (size) __pu_size = (size);                       \
    long __pu_err = -EFAULT;                            \
                                            \
    if (!check || __access_ok(__pu_ptr, __pu_size, segment))            \
        switch (__pu_size) {                            \
              case 1: __put_user_size(__pu_x, __pu_ptr, 1, __pu_err); break;    \
              case 2: __put_user_size(__pu_x, __pu_ptr, 2, __pu_err); break;    \
              case 4: __put_user_size(__pu_x, __pu_ptr, 4, __pu_err); break;    \
              case 8: __put_user_size(__pu_x, __pu_ptr, 8, __pu_err); break;    \
              default: __put_user_unknown(); break;             \
        }                                   \
    __pu_err;                                   \
})

Definition at line 213 of file uaccess.h.

#define __get_user	(	x,
		ptr
	)	__get_user_nocheck((x), (ptr), sizeof(*(ptr)))

Definition at line 92 of file uaccess.h.

#define __get_user_check	(	x,
		ptr,
		size,
		segment
	)	__do_get_user(1, x, ptr, size, segment)

Definition at line 205 of file uaccess.h.

#define __get_user_nocheck	(	x,
		ptr,
		size
	)	__do_get_user(0, x, ptr, size, KERNEL_DS)

Definition at line 204 of file uaccess.h.

#define __get_user_size	(	val,
		addr,
		n,
		err
	)

Value:

do {                                    \
    __ld_user("__ex_table", (unsigned long) addr, n, RELOC_TYPE);   \
    (err) = ia64_getreg(_IA64_REG_R8);              \
    (val) = ia64_getreg(_IA64_REG_R9);              \
} while (0)

Definition at line 166 of file uaccess.h.

#define __get_user_unaligned	(	x,
		ptr
	)

Value:

({                                              \
    long __ret;                                     \
    switch (sizeof(*(ptr))) {                               \
        case 1: __ret = __get_user((x), (ptr)); break;                  \
        case 2: __ret = (__get_user((x), (u8 __user *)(ptr)))               \
            | (__get_user((x) >> 8, ((u8 __user *)(ptr) + 1))); break;      \
        case 4: __ret = (__get_user((x), (u16 __user *)(ptr)))              \
            | (__get_user((x) >> 16, ((u16 __user *)(ptr) + 1))); break;        \
        case 8: __ret = (__get_user((x), (u32 __user *)(ptr)))              \
            | (__get_user((x) >> 32, ((u32 __user *)(ptr) + 1))); break;        \
        default: __ret = __get_user_unaligned_unknown();                \
    }                                           \
    __ret;                                          \
})

Definition at line 114 of file uaccess.h.

#define __put_user	(	x,
		ptr
	)	__put_user_nocheck((__typeof__((ptr))) (x), (ptr), sizeof((ptr)))

Definition at line 91 of file uaccess.h.

#define __put_user_check	(	x,
		ptr,
		size,
		segment
	)	__do_put_user(1, x, ptr, size, segment)

Definition at line 232 of file uaccess.h.

#define __put_user_nocheck	(	x,
		ptr,
		size
	)	__do_put_user(0, x, ptr, size, KERNEL_DS)

Definition at line 231 of file uaccess.h.

#define __put_user_size	(	val,
		addr,
		n,
		err
	)

Value:

do {                                                \
    __st_user("__ex_table", (unsigned long) addr, n, RELOC_TYPE, (unsigned long) (val));    \
    (err) = ia64_getreg(_IA64_REG_R8);                          \
} while (0)

Definition at line 172 of file uaccess.h.

#define __put_user_unaligned	(	x,
		ptr
	)

Value:

({                                              \
    long __ret;                                     \
    switch (sizeof(*(ptr))) {                               \
        case 1: __ret = __put_user((x), (ptr)); break;                  \
        case 2: __ret = (__put_user((x), (u8 __user *)(ptr)))               \
            | (__put_user((x) >> 8, ((u8 __user *)(ptr) + 1))); break;      \
        case 4: __ret = (__put_user((x), (u16 __user *)(ptr)))              \
            | (__put_user((x) >> 16, ((u16 __user *)(ptr) + 1))); break;        \
        case 8: __ret = (__put_user((x), (u32 __user *)(ptr)))              \
            | (__put_user((x) >> 32, ((u32 __user *)(ptr) + 1))); break;        \
        default: __ret = __put_user_unaligned_unknown();                \
    }                                           \
    __ret;                                          \
})

Definition at line 96 of file uaccess.h.

#define access_ok	(	type,
		addr,
		size
	)	__access_ok((addr), (size), get_fs())

Definition at line 73 of file uaccess.h.

#define ARCH_HAS_SEARCH_EXTABLE

Definition at line 345 of file uaccess.h.

#define ARCH_HAS_SORT_EXTABLE

Definition at line 344 of file uaccess.h.

#define ARCH_HAS_TRANSLATE_MEM_PTR 1

Definition at line 367 of file uaccess.h.

#define clear_user	(	to,
		n
	)

Value:

({                              \
    unsigned long __cu_len = (n);               \
    if (__access_ok(to, __cu_len, get_fs()))        \
        __cu_len = __do_clear_user(to, __cu_len);   \
    __cu_len;                       \
})

Definition at line 291 of file uaccess.h.

#define copy_from_user	(	to,
		from,
		n
	)

Value:

({                                          \
    void *__cu_to = (to);                               \
    const void __user *__cu_from = (from);                      \
    long __cu_len = (n);                                \
											\
	__chk_user_ptr(__cu_from);                         \
    if (__access_ok(__cu_from, __cu_len, get_fs()))                 \
        __cu_len = __copy_user((__force void __user *) __cu_to, __cu_from, __cu_len);   \
    __cu_len;                                   \
})

Definition at line 265 of file uaccess.h.

#define copy_to_user	(	to,
		from,
		n
	)

Value:

({                                          \
    void __user *__cu_to = (to);                            \
    const void *__cu_from = (from);                         \
    long __cu_len = (n);                                \
											\
	if (__access_ok(__cu_to, __cu_len, get_fs()))                  \
        __cu_len = __copy_user(__cu_to, (__force void __user *) __cu_from, __cu_len);   \
    __cu_len;                                   \
})

Definition at line 254 of file uaccess.h.

#define get_ds ( void ) (KERNEL_DS)

Definition at line 54 of file uaccess.h.

#define get_fs ( void ) (current_thread_info()->addr_limit)

Definition at line 55 of file uaccess.h.

#define get_user	(	x,
		ptr
	)	__get_user_check((x), (ptr), sizeof(*(ptr)), get_fs())

Definition at line 84 of file uaccess.h.

#define KERNEL_DS ((mm_segment_t) { ~0UL }) /* cf. access_ok() */

Definition at line 48 of file uaccess.h.

#define put_user	(	x,
		ptr
	)	__put_user_check((__typeof__((ptr))) (x), (ptr), sizeof((ptr)), get_fs())

Definition at line 83 of file uaccess.h.

#define RELOC_TYPE 2 /* ip-rel */

Definition at line 165 of file uaccess.h.

#define segment_eq	(	a,
		b
	)	((a).seg == (b).seg)

Definition at line 58 of file uaccess.h.

#define set_fs ( x ) (current_thread_info()->addr_limit = (x))

Definition at line 56 of file uaccess.h.

#define strlen_user ( str )

Value:

({                          \
    const char __user *__su_str = (str);        \
    unsigned long __su_ret = 0;         \
    if (__access_ok(__su_str, 0, get_fs()))     \
        __su_ret = __strlen_user(__su_str); \
    __su_ret;                   \
})

Definition at line 318 of file uaccess.h.

#define strncpy_from_user	(	to,
		from,
		n
	)

Value:

({                                  \
    const char __user * __sfu_from = (from);            \
    long __sfu_ret = -EFAULT;                   \
    if (__access_ok(__sfu_from, 0, get_fs()))           \
        __sfu_ret = __strncpy_from_user((to), __sfu_from, (n)); \
    __sfu_ret;                          \
})

Definition at line 306 of file uaccess.h.

#define strnlen_user	(	str,
		len
	)

Value:

({                              \
    const char __user *__su_str = (str);            \
    unsigned long __su_ret = 0;             \
    if (__access_ok(__su_str, 0, get_fs()))         \
        __su_ret = __strnlen_user(__su_str, len);   \
    __su_ret;                       \
})

Definition at line 334 of file uaccess.h.

#define USER_DS ((mm_segment_t) { TASK_SIZE-1 }) /* cf. access_ok() */

Definition at line 49 of file uaccess.h.

#define VERIFY_READ 0

Definition at line 51 of file uaccess.h.

#define VERIFY_WRITE 1

Definition at line 52 of file uaccess.h.

Function Documentation

unsigned long __must_check __copy_user	(	void __user *	to,
		const void __user *	from,
		unsigned long	count
	)

unsigned long __do_clear_user	(	void __user *	,
		unsigned	long
	)

Definition at line 376 of file usercopy.c.

long __get_user_unaligned_unknown ( void )

void __get_user_unknown ( void )

long __put_user_unaligned_unknown ( void )

void __put_user_unknown ( void )

unsigned long __strlen_user ( const char __user * )

long __must_check __strncpy_from_user	(	char *	to,
		const char __user *	from,
		long	to_len
	)

Definition at line 113 of file usercopy.c.

unsigned long __strnlen_user	(	const char __user *	,
		long
	)

void ia64_handle_exception	(	struct pt_regs *	regs,
		const struct exception_table_entry *	e
	)

Definition at line 106 of file extable.c.

struct exception_table_entry* search_exception_tables ( unsigned long addr )

read

Definition at line 51 of file extable.c.

Data Structures

Macros

Functions

Macro Definition Documentation

Function Documentation