#ifndef _ASM_UACCESS_H
#define _ASM_UACCESS_H
-#include <linux/config.h>
-#include <linux/compiler.h>
+#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/thread_info.h>
#include <asm-generic/uaccess.h>
*
* For historical reasons, these macros are grossly misnamed.
*/
-#ifdef CONFIG_MIPS32
+#ifdef CONFIG_32BIT
#define __UA_LIMIT 0x80000000UL
#define __UA_t0 "$8"
#define __UA_t1 "$9"
-#endif /* CONFIG_MIPS32 */
+#endif /* CONFIG_32BIT */
-#ifdef CONFIG_MIPS64
+#ifdef CONFIG_64BIT
#define __UA_LIMIT (- TASK_SIZE)
#define __UA_t0 "$12"
#define __UA_t1 "$13"
-#endif /* CONFIG_MIPS64 */
+#endif /* CONFIG_64BIT */
/*
* USER_DS is a bitmask that has the bits set that may not be set in a valid
#define access_ok(type, addr, size) \
likely(__access_ok((unsigned long)(addr), (size),__access_mask))
-/*
- * verify_area: - Obsolete, use access_ok()
- * @type: Type of access: %VERIFY_READ or %VERIFY_WRITE
- * @addr: User space pointer to start of block to check
- * @size: Size of block to check
- *
- * Context: User context only. This function may sleep.
- *
- * This function has been replaced by access_ok().
- *
- * Checks if a pointer to a block of memory in user space is valid.
- *
- * Returns zero if the memory block may be valid, -EFAULT
- * if it is definitely invalid.
- *
- * See access_ok() for more details.
- */
-static inline int verify_area(int type, const void * addr, unsigned long size)
-{
- return access_ok(type, addr, size) ? 0 : -EFAULT;
-}
-
/*
* put_user: - Write a simple value into user space.
* @x: Value to copy to user space.
* Returns zero on success, or -EFAULT on error.
*/
#define put_user(x,ptr) \
- __put_user_check((__typeof__(*(ptr)))(x),(ptr),sizeof(*(ptr)))
+ __put_user_check((x),(ptr),sizeof(*(ptr)))
/*
* get_user: - Get a simple variable from user space.
* On error, the variable @x is set to zero.
*/
#define get_user(x,ptr) \
- __get_user_check((__typeof__(*(ptr)))(x),(ptr),sizeof(*(ptr)))
+ __get_user_check((x),(ptr),sizeof(*(ptr)))
/*
* __put_user: - Write a simple value into user space, with less checking.
* Returns zero on success, or -EFAULT on error.
*/
#define __put_user(x,ptr) \
- __put_user_nocheck((__typeof__(*(ptr)))(x),(ptr),sizeof(*(ptr)))
+ __put_user_nocheck((x),(ptr),sizeof(*(ptr)))
/*
* __get_user: - Get a simple variable from user space, with less checking.
* On error, the variable @x is set to zero.
*/
#define __get_user(x,ptr) \
- __get_user_nocheck((__typeof__(*(ptr)))(x),(ptr),sizeof(*(ptr)))
+ __get_user_nocheck((x),(ptr),sizeof(*(ptr)))
struct __large_struct { unsigned long buf[100]; };
-#define __m(x) (*(struct __large_struct *)(x))
+#define __m(x) (*(struct __large_struct __user *)(x))
/*
* Yuck. We need two variants, one for 64bit operation and one
* for 32 bit mode and old iron.
*/
-#ifdef __mips64
-#define __GET_USER_DW __get_user_asm("ld")
-#else
-#define __GET_USER_DW __get_user_asm_ll32
+#ifdef CONFIG_32BIT
+#define __GET_USER_DW(val, ptr) __get_user_asm_ll32(val, ptr)
+#endif
+#ifdef CONFIG_64BIT
+#define __GET_USER_DW(val, ptr) __get_user_asm(val, "ld", ptr)
#endif
-#define __get_user_nocheck(x,ptr,size) \
-({ \
- long __gu_err; \
- __typeof(*(ptr)) __gu_val; \
- long __gu_addr; \
- might_sleep(); \
- __asm__("":"=r" (__gu_val)); \
- __gu_addr = (long) (ptr); \
- __asm__("":"=r" (__gu_err)); \
- switch (size) { \
- case 1: __get_user_asm("lb"); break; \
- case 2: __get_user_asm("lh"); break; \
- case 4: __get_user_asm("lw"); break; \
- case 8: __GET_USER_DW; break; \
- default: __get_user_unknown(); break; \
- } x = (__typeof__(*(ptr))) __gu_val; __gu_err; \
-})
+extern void __get_user_unknown(void);
-#define __get_user_check(x,ptr,size) \
+#define __get_user_common(val, size, ptr) \
+do { \
+ switch (size) { \
+ case 1: __get_user_asm(val, "lb", ptr); break; \
+ case 2: __get_user_asm(val, "lh", ptr); break; \
+ case 4: __get_user_asm(val, "lw", ptr); break; \
+ case 8: __GET_USER_DW(val, ptr); break; \
+ default: __get_user_unknown(); break; \
+ } \
+} while (0)
+
+#define __get_user_nocheck(x,ptr,size) \
({ \
long __gu_err; \
- __typeof__(*(ptr)) __gu_val; \
- long __gu_addr; \
- might_sleep(); \
- __asm__("":"=r" (__gu_val)); \
- __gu_addr = (long) (ptr); \
- __asm__("":"=r" (__gu_err)); \
- if (access_ok(VERIFY_READ,__gu_addr,size)) { \
- switch (size) { \
- case 1: __get_user_asm("lb"); break; \
- case 2: __get_user_asm("lh"); break; \
- case 4: __get_user_asm("lw"); break; \
- case 8: __GET_USER_DW; break; \
- default: __get_user_unknown(); break; \
- } \
- } x = (__typeof__(*(ptr))) __gu_val; __gu_err; \
+ \
+ __get_user_common((x), size, ptr); \
+ __gu_err; \
})
-#define __get_user_asm(insn) \
+#define __get_user_check(x,ptr,size) \
({ \
- __asm__ __volatile__( \
- "1:\t" insn "\t%1,%2\n\t" \
- "move\t%0,$0\n" \
- "2:\n\t" \
- ".section\t.fixup,\"ax\"\n" \
- "3:\tli\t%0,%3\n\t" \
- "move\t%1,$0\n\t" \
- "j\t2b\n\t" \
- ".previous\n\t" \
- ".section\t__ex_table,\"a\"\n\t" \
- __UA_ADDR "\t1b,3b\n\t" \
- ".previous" \
- :"=r" (__gu_err), "=r" (__gu_val) \
- :"o" (__m(__gu_addr)), "i" (-EFAULT)); \
+ long __gu_err = -EFAULT; \
+ const __typeof__(*(ptr)) __user * __gu_ptr = (ptr); \
+ \
+ if (likely(access_ok(VERIFY_READ, __gu_ptr, size))) \
+ __get_user_common((x), size, __gu_ptr); \
+ \
+ __gu_err; \
})
+#define __get_user_asm(val, insn, addr) \
+{ \
+ long __gu_tmp; \
+ \
+ __asm__ __volatile__( \
+ "1: " insn " %1, %3 \n" \
+ "2: \n" \
+ " .section .fixup,\"ax\" \n" \
+ "3: li %0, %4 \n" \
+ " j 2b \n" \
+ " .previous \n" \
+ " .section __ex_table,\"a\" \n" \
+ " "__UA_ADDR "\t1b, 3b \n" \
+ " .previous \n" \
+ : "=r" (__gu_err), "=r" (__gu_tmp) \
+ : "0" (0), "o" (__m(addr)), "i" (-EFAULT)); \
+ \
+ (val) = (__typeof__(*(addr))) __gu_tmp; \
+}
+
/*
* Get a long long 64 using 32 bit registers.
*/
-#define __get_user_asm_ll32 \
-({ \
+#define __get_user_asm_ll32(val, addr) \
+{ \
+ unsigned long long __gu_tmp; \
+ \
__asm__ __volatile__( \
- "1:\tlw\t%1,%2\n" \
- "2:\tlw\t%D1,%3\n\t" \
- "move\t%0,$0\n" \
- "3:\t.section\t.fixup,\"ax\"\n" \
- "4:\tli\t%0,%4\n\t" \
- "move\t%1,$0\n\t" \
- "move\t%D1,$0\n\t" \
- "j\t3b\n\t" \
- ".previous\n\t" \
- ".section\t__ex_table,\"a\"\n\t" \
- __UA_ADDR "\t1b,4b\n\t" \
- __UA_ADDR "\t2b,4b\n\t" \
- ".previous" \
- :"=r" (__gu_err), "=&r" (__gu_val) \
- :"o" (__m(__gu_addr)), "o" (__m(__gu_addr + 4)), \
- "i" (-EFAULT)); \
-})
-
-extern void __get_user_unknown(void);
+ "1: lw %1, (%3) \n" \
+ "2: lw %D1, 4(%3) \n" \
+ " move %0, $0 \n" \
+ "3: .section .fixup,\"ax\" \n" \
+ "4: li %0, %4 \n" \
+ " move %1, $0 \n" \
+ " move %D1, $0 \n" \
+ " j 3b \n" \
+ " .previous \n" \
+ " .section __ex_table,\"a\" \n" \
+ " " __UA_ADDR " 1b, 4b \n" \
+ " " __UA_ADDR " 2b, 4b \n" \
+ " .previous \n" \
+ : "=r" (__gu_err), "=&r" (__gu_tmp) \
+ : "0" (0), "r" (addr), "i" (-EFAULT)); \
+ (val) = (__typeof__(*(addr))) __gu_tmp; \
+}
/*
* Yuck. We need two variants, one for 64bit operation and one
* for 32 bit mode and old iron.
*/
-#ifdef __mips64
-#define __PUT_USER_DW __put_user_asm("sd")
-#else
-#define __PUT_USER_DW __put_user_asm_ll32
+#ifdef CONFIG_32BIT
+#define __PUT_USER_DW(ptr) __put_user_asm_ll32(ptr)
+#endif
+#ifdef CONFIG_64BIT
+#define __PUT_USER_DW(ptr) __put_user_asm("sd", ptr)
#endif
#define __put_user_nocheck(x,ptr,size) \
({ \
- long __pu_err; \
__typeof__(*(ptr)) __pu_val; \
- long __pu_addr; \
- might_sleep(); \
+ long __pu_err = 0; \
+ \
__pu_val = (x); \
- __pu_addr = (long) (ptr); \
- __asm__("":"=r" (__pu_err)); \
switch (size) { \
- case 1: __put_user_asm("sb"); break; \
- case 2: __put_user_asm("sh"); break; \
- case 4: __put_user_asm("sw"); break; \
- case 8: __PUT_USER_DW; break; \
+ case 1: __put_user_asm("sb", ptr); break; \
+ case 2: __put_user_asm("sh", ptr); break; \
+ case 4: __put_user_asm("sw", ptr); break; \
+ case 8: __PUT_USER_DW(ptr); break; \
default: __put_user_unknown(); break; \
} \
__pu_err; \
#define __put_user_check(x,ptr,size) \
({ \
- long __pu_err; \
- __typeof__(*(ptr)) __pu_val; \
- long __pu_addr; \
- might_sleep(); \
- __pu_val = (x); \
- __pu_addr = (long) (ptr); \
- __asm__("":"=r" (__pu_err)); \
- if (access_ok(VERIFY_WRITE, __pu_addr, size)) { \
+ __typeof__(*(ptr)) __user *__pu_addr = (ptr); \
+ __typeof__(*(ptr)) __pu_val = (x); \
+ long __pu_err = -EFAULT; \
+ \
+ if (likely(access_ok(VERIFY_WRITE, __pu_addr, size))) { \
switch (size) { \
- case 1: __put_user_asm("sb"); break; \
- case 2: __put_user_asm("sh"); break; \
- case 4: __put_user_asm("sw"); break; \
- case 8: __PUT_USER_DW; break; \
+ case 1: __put_user_asm("sb", __pu_addr); break; \
+ case 2: __put_user_asm("sh", __pu_addr); break; \
+ case 4: __put_user_asm("sw", __pu_addr); break; \
+ case 8: __PUT_USER_DW(__pu_addr); break; \
default: __put_user_unknown(); break; \
} \
} \
__pu_err; \
})
-#define __put_user_asm(insn) \
-({ \
+#define __put_user_asm(insn, ptr) \
+{ \
__asm__ __volatile__( \
- "1:\t" insn "\t%z1, %2\t\t\t# __put_user_asm\n\t" \
- "move\t%0, $0\n" \
- "2:\n\t" \
- ".section\t.fixup,\"ax\"\n" \
- "3:\tli\t%0,%3\n\t" \
- "j\t2b\n\t" \
- ".previous\n\t" \
- ".section\t__ex_table,\"a\"\n\t" \
- __UA_ADDR "\t1b,3b\n\t" \
- ".previous" \
- :"=r" (__pu_err) \
- :"Jr" (__pu_val), "o" (__m(__pu_addr)), "i" (-EFAULT)); \
-})
+ "1: " insn " %z2, %3 # __put_user_asm\n" \
+ "2: \n" \
+ " .section .fixup,\"ax\" \n" \
+ "3: li %0, %4 \n" \
+ " j 2b \n" \
+ " .previous \n" \
+ " .section __ex_table,\"a\" \n" \
+ " " __UA_ADDR " 1b, 3b \n" \
+ " .previous \n" \
+ : "=r" (__pu_err) \
+ : "0" (0), "Jr" (__pu_val), "o" (__m(ptr)), \
+ "i" (-EFAULT)); \
+}
-#define __put_user_asm_ll32 \
-({ \
+#define __put_user_asm_ll32(ptr) \
+{ \
__asm__ __volatile__( \
- "1:\tsw\t%1, %2\t\t\t# __put_user_asm_ll32\n\t" \
- "2:\tsw\t%D1, %3\n" \
- "move\t%0, $0\n" \
- "3:\n\t" \
- ".section\t.fixup,\"ax\"\n" \
- "4:\tli\t%0,%4\n\t" \
- "j\t3b\n\t" \
- ".previous\n\t" \
- ".section\t__ex_table,\"a\"\n\t" \
- __UA_ADDR "\t1b,4b\n\t" \
- __UA_ADDR "\t2b,4b\n\t" \
- ".previous" \
- :"=r" (__pu_err) \
- :"r" (__pu_val), "o" (__m(__pu_addr)), \
- "o" (__m(__pu_addr + 4)), "i" (-EFAULT)); \
-})
+ "1: sw %2, (%3) # __put_user_asm_ll32 \n" \
+ "2: sw %D2, 4(%3) \n" \
+ "3: \n" \
+ " .section .fixup,\"ax\" \n" \
+ "4: li %0, %4 \n" \
+ " j 3b \n" \
+ " .previous \n" \
+ " .section __ex_table,\"a\" \n" \
+ " " __UA_ADDR " 1b, 4b \n" \
+ " " __UA_ADDR " 2b, 4b \n" \
+ " .previous" \
+ : "=r" (__pu_err) \
+ : "0" (0), "r" (__pu_val), "r" (ptr), \
+ "i" (-EFAULT)); \
+}
extern void __put_user_unknown(void);
#define __invoke_copy_to_user(to,from,n) \
({ \
- register void *__cu_to_r __asm__ ("$4"); \
+ register void __user *__cu_to_r __asm__ ("$4"); \
register const void *__cu_from_r __asm__ ("$5"); \
register long __cu_len_r __asm__ ("$6"); \
\
*/
#define __copy_to_user(to,from,n) \
({ \
- void *__cu_to; \
+ void __user *__cu_to; \
const void *__cu_from; \
long __cu_len; \
\
*/
#define copy_to_user(to,from,n) \
({ \
- void *__cu_to; \
+ void __user *__cu_to; \
const void *__cu_from; \
long __cu_len; \
\
#define __invoke_copy_from_user(to,from,n) \
({ \
register void *__cu_to_r __asm__ ("$4"); \
- register const void *__cu_from_r __asm__ ("$5"); \
+ register const void __user *__cu_from_r __asm__ ("$5"); \
register long __cu_len_r __asm__ ("$6"); \
\
__cu_to_r = (to); \
".set\tnoat\n\t" \
__UA_ADDU "\t$1, %1, %2\n\t" \
".set\tat\n\t" \
- ".set\treorder\n\t" \
- "move\t%0, $6" /* XXX */ \
+ ".set\treorder" \
: "+r" (__cu_to_r), "+r" (__cu_from_r), "+r" (__cu_len_r) \
: \
: "$8", "$9", "$10", "$11", "$12", "$15", "$24", "$31", \
#define __copy_from_user(to,from,n) \
({ \
void *__cu_to; \
- const void *__cu_from; \
+ const void __user *__cu_from; \
long __cu_len; \
\
might_sleep(); \
#define copy_from_user(to,from,n) \
({ \
void *__cu_to; \
- const void *__cu_from; \
+ const void __user *__cu_from; \
long __cu_len; \
\
might_sleep(); \
#define copy_in_user(to,from,n) \
({ \
- void *__cu_to; \
- const void *__cu_from; \
+ void __user *__cu_to; \
+ const void __user *__cu_from; \
long __cu_len; \
\
might_sleep(); \
* On success, this will be zero.
*/
static inline __kernel_size_t
-__clear_user(void *addr, __kernel_size_t size)
+__clear_user(void __user *addr, __kernel_size_t size)
{
__kernel_size_t res;
#define clear_user(addr,n) \
({ \
- void * __cl_addr = (addr); \
+ void __user * __cl_addr = (addr); \
unsigned long __cl_size = (n); \
if (__cl_size && access_ok(VERIFY_WRITE, \
((unsigned long)(__cl_addr)), __cl_size)) \
* and returns @count.
*/
static inline long
-__strncpy_from_user(char *__to, const char *__from, long __len)
+__strncpy_from_user(char *__to, const char __user *__from, long __len)
{
long res;
* and returns @count.
*/
static inline long
-strncpy_from_user(char *__to, const char *__from, long __len)
+strncpy_from_user(char *__to, const char __user *__from, long __len)
{
long res;
}
/* Returns: 0 if bad, string length+1 (memory size) of string if ok */
-static inline long __strlen_user(const char *s)
+static inline long __strlen_user(const char __user *s)
{
long res;
* If there is a limit on the length of a valid string, you may wish to
* consider using strnlen_user() instead.
*/
-static inline long strlen_user(const char *s)
+static inline long strlen_user(const char __user *s)
{
long res;
}
/* Returns: 0 if bad, string length+1 (memory size) of string if ok */
-static inline long __strnlen_user(const char *s, long n)
+static inline long __strnlen_user(const char __user *s, long n)
{
long res;
* If there is a limit on the length of a valid string, you may wish to
* consider using strnlen_user() instead.
*/
-static inline long strnlen_user(const char *s, long n)
+static inline long strnlen_user(const char __user *s, long n)
{
long res;
git://git.onelab.eu / linux-2.6.git / blobdiff