#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 segment_eq(a, b) ((a).seg == (b).seg)
-#define __addr_ok(addr) (!((unsigned long)(addr) & (current_thread_info()->addr_limit.seg)))
+#define __addr_ok(addr) (!((unsigned long)(addr) & \
+ (current_thread_info()->addr_limit.seg)))
/*
* Uhhuh, this needs 65-bit arithmetic. We have a carry..
*/
-#define __range_not_ok(addr,size) ({ \
- unsigned long flag,roksum; \
- __chk_user_ptr(addr); \
- asm("# range_ok\n\r" \
- "addq %3,%1 ; sbbq %0,%0 ; cmpq %1,%4 ; sbbq $0,%0" \
- :"=&r" (flag), "=r" (roksum) \
- :"1" (addr),"g" ((long)(size)),"g" (current_thread_info()->addr_limit.seg)); \
- flag; })
+#define __range_not_ok(addr, size) \
+({ \
+ unsigned long flag, roksum; \
+ __chk_user_ptr(addr); \
+ asm("# range_ok\n\r" \
+ "addq %3,%1 ; sbbq %0,%0 ; cmpq %1,%4 ; sbbq $0,%0" \
+ : "=&r" (flag), "=r" (roksum) \
+ : "1" (addr), "g" ((long)(size)), \
+ "g" (current_thread_info()->addr_limit.seg)); \
+ flag; \
+})
-#define access_ok(type, addr, size) (__range_not_ok(addr,size) == 0)
+#define access_ok(type, addr, size) (__range_not_ok(addr, size) == 0)
/*
* The exception table consists of pairs of addresses: the first is the
* on our cache or tlb entries.
*/
-struct exception_table_entry
-{
+struct exception_table_entry {
unsigned long insn, fixup;
};
* accesses to the same area of user memory).
*/
-#define __get_user_x(size,ret,x,ptr) \
- asm volatile("call __get_user_" #size \
- :"=a" (ret),"=d" (x) \
- :"c" (ptr) \
- :"r8")
+#define __get_user_x(size, ret, x, ptr) \
+ asm volatile("call __get_user_" #size \
+ : "=a" (ret),"=d" (x) \
+ : "c" (ptr) \
+ : "r8")
+
+/* Careful: we have to cast the result to the type of the pointer
+ * for sign reasons */
-/* Careful: we have to cast the result to the type of the pointer for sign reasons */
-#define get_user(x,ptr) \
-({ unsigned long __val_gu; \
- int __ret_gu; \
+#define get_user(x, ptr) \
+({ \
+ unsigned long __val_gu; \
+ int __ret_gu; \
__chk_user_ptr(ptr); \
- switch(sizeof (*(ptr))) { \
- case 1: __get_user_x(1,__ret_gu,__val_gu,ptr); break; \
- case 2: __get_user_x(2,__ret_gu,__val_gu,ptr); break; \
- case 4: __get_user_x(4,__ret_gu,__val_gu,ptr); break; \
- case 8: __get_user_x(8,__ret_gu,__val_gu,ptr); break; \
- default: __get_user_bad(); break; \
+ switch (sizeof(*(ptr))) { \
+ case 1: \
+ __get_user_x(1, __ret_gu, __val_gu, ptr); \
+ break; \
+ case 2: \
+ __get_user_x(2, __ret_gu, __val_gu, ptr); \
+ break; \
+ case 4: \
+ __get_user_x(4, __ret_gu, __val_gu, ptr); \
+ break; \
+ case 8: \
+ __get_user_x(8, __ret_gu, __val_gu, ptr); \
+ break; \
+ default: \
+ __get_user_bad(); \
+ break; \
} \
(x) = (__force typeof(*(ptr)))__val_gu; \
__ret_gu; \
extern void __put_user_8(void);
extern void __put_user_bad(void);
-#define __put_user_x(size,ret,x,ptr) \
- asm volatile("call __put_user_" #size \
- :"=a" (ret) \
- :"c" (ptr),"d" (x) \
- :"r8")
+#define __put_user_x(size, ret, x, ptr) \
+ asm volatile("call __put_user_" #size \
+ :"=a" (ret) \
+ :"c" (ptr),"d" (x) \
+ :"r8")
-#define put_user(x,ptr) \
- __put_user_check((__typeof__(*(ptr)))(x),(ptr),sizeof(*(ptr)))
+#define put_user(x, ptr) \
+ __put_user_check((__typeof__(*(ptr)))(x), (ptr), sizeof(*(ptr)))
-#define __get_user(x,ptr) \
- __get_user_nocheck((x),(ptr),sizeof(*(ptr)))
-#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(x, ptr) \
+ __put_user_nocheck((__typeof__(*(ptr)))(x), (ptr), sizeof(*(ptr)))
#define __get_user_unaligned __get_user
#define __put_user_unaligned __put_user
-#define __put_user_nocheck(x,ptr,size) \
+#define __put_user_nocheck(x, ptr, size) \
({ \
int __pu_err; \
- __put_user_size((x),(ptr),(size),__pu_err); \
+ __put_user_size((x), (ptr), (size), __pu_err); \
__pu_err; \
})
-#define __put_user_check(x,ptr,size) \
-({ \
- int __pu_err; \
- typeof(*(ptr)) __user *__pu_addr = (ptr); \
- switch (size) { \
- case 1: __put_user_x(1,__pu_err,x,__pu_addr); break; \
- case 2: __put_user_x(2,__pu_err,x,__pu_addr); break; \
- case 4: __put_user_x(4,__pu_err,x,__pu_addr); break; \
- case 8: __put_user_x(8,__pu_err,x,__pu_addr); break; \
- default: __put_user_bad(); \
- } \
- __pu_err; \
+#define __put_user_check(x, ptr, size) \
+({ \
+ int __pu_err; \
+ typeof(*(ptr)) __user *__pu_addr = (ptr); \
+ switch (size) { \
+ case 1: \
+ __put_user_x(1, __pu_err, x, __pu_addr); \
+ break; \
+ case 2: \
+ __put_user_x(2, __pu_err, x, __pu_addr); \
+ break; \
+ case 4: \
+ __put_user_x(4, __pu_err, x, __pu_addr); \
+ break; \
+ case 8: \
+ __put_user_x(8, __pu_err, x, __pu_addr); \
+ break; \
+ default: \
+ __put_user_bad(); \
+ } \
+ __pu_err; \
})
-#define __put_user_size(x,ptr,size,retval) \
+#define __put_user_size(x, ptr, size, retval) \
do { \
retval = 0; \
__chk_user_ptr(ptr); \
switch (size) { \
- case 1: __put_user_asm(x,ptr,retval,"b","b","iq",-EFAULT); break;\
- case 2: __put_user_asm(x,ptr,retval,"w","w","ir",-EFAULT); break;\
- case 4: __put_user_asm(x,ptr,retval,"l","k","ir",-EFAULT); break;\
- case 8: __put_user_asm(x,ptr,retval,"q","","Zr",-EFAULT); break;\
- default: __put_user_bad(); \
+ case 1: \
+ __put_user_asm(x, ptr, retval, "b", "b", "iq", -EFAULT);\
+ break; \
+ case 2: \
+ __put_user_asm(x, ptr, retval, "w", "w", "ir", -EFAULT);\
+ break; \
+ case 4: \
+ __put_user_asm(x, ptr, retval, "l", "k", "ir", -EFAULT);\
+ break; \
+ case 8: \
+ __put_user_asm(x, ptr, retval, "q", "", "Zr", -EFAULT); \
+ break; \
+ default: \
+ __put_user_bad(); \
} \
} while (0)
* aliasing issues.
*/
#define __put_user_asm(x, addr, err, itype, rtype, ltype, errno) \
- asm volatile( \
- "1: mov"itype" %"rtype"1,%2\n" \
- "2:\n" \
- ".section .fixup,\"ax\"\n" \
- "3: mov %3,%0\n" \
- " jmp 2b\n" \
- ".previous\n" \
- _ASM_EXTABLE(1b,3b) \
- : "=r"(err) \
- : ltype (x), "m"(__m(addr)), "i"(errno), "0"(err))
-
-
-#define __get_user_nocheck(x,ptr,size) \
+ asm volatile("1: mov"itype" %"rtype"1,%2\n" \
+ "2:\n" \
+ ".section .fixup, \"ax\"\n" \
+ "3: mov %3,%0\n" \
+ " jmp 2b\n" \
+ ".previous\n" \
+ _ASM_EXTABLE(1b, 3b) \
+ : "=r"(err) \
+ : ltype (x), "m" (__m(addr)), "i" (errno), "0" (err))
+
+
+#define __get_user_nocheck(x, ptr, size) \
({ \
int __gu_err; \
unsigned long __gu_val; \
- __get_user_size(__gu_val,(ptr),(size),__gu_err); \
+ __get_user_size(__gu_val, (ptr), (size), __gu_err); \
(x) = (__force typeof(*(ptr)))__gu_val; \
__gu_err; \
})
extern int __get_user_8(void);
extern int __get_user_bad(void);
-#define __get_user_size(x,ptr,size,retval) \
+#define __get_user_size(x, ptr, size, retval) \
do { \
retval = 0; \
__chk_user_ptr(ptr); \
switch (size) { \
- case 1: __get_user_asm(x,ptr,retval,"b","b","=q",-EFAULT); break;\
- case 2: __get_user_asm(x,ptr,retval,"w","w","=r",-EFAULT); break;\
- case 4: __get_user_asm(x,ptr,retval,"l","k","=r",-EFAULT); break;\
- case 8: __get_user_asm(x,ptr,retval,"q","","=r",-EFAULT); break;\
- default: (x) = __get_user_bad(); \
+ case 1: \
+ __get_user_asm(x, ptr, retval, "b", "b", "=q", -EFAULT);\
+ break; \
+ case 2: \
+ __get_user_asm(x, ptr, retval, "w", "w", "=r", -EFAULT);\
+ break; \
+ case 4: \
+ __get_user_asm(x, ptr, retval, "l", "k", "=r", -EFAULT);\
+ break; \
+ case 8: \
+ __get_user_asm(x, ptr, retval, "q", "", "=r", -EFAULT); \
+ break; \
+ default: \
+ (x) = __get_user_bad(); \
} \
} while (0)
#define __get_user_asm(x, addr, err, itype, rtype, ltype, errno) \
- asm volatile( \
- "1: mov"itype" %2,%"rtype"1\n" \
- "2:\n" \
- ".section .fixup,\"ax\"\n" \
- "3: mov %3,%0\n" \
- " xor"itype" %"rtype"1,%"rtype"1\n" \
- " jmp 2b\n" \
- ".previous\n" \
- _ASM_EXTABLE(1b,3b) \
- : "=r"(err), ltype (x) \
- : "m"(__m(addr)), "i"(errno), "0"(err))
+ asm volatile("1: mov"itype" %2,%"rtype"1\n" \
+ "2:\n" \
+ ".section .fixup, \"ax\"\n" \
+ "3: mov %3,%0\n" \
+ " xor"itype" %"rtype"1,%"rtype"1\n" \
+ " jmp 2b\n" \
+ ".previous\n" \
+ _ASM_EXTABLE(1b, 3b) \
+ : "=r" (err), ltype (x) \
+ : "m" (__m(addr)), "i"(errno), "0"(err))
/*
* Copy To/From Userspace
static __always_inline __must_check
int __copy_from_user(void *dst, const void __user *src, unsigned size)
-{
+{
int ret = 0;
if (!__builtin_constant_p(size))
- return copy_user_generic(dst,(__force void *)src,size);
- switch (size) {
- case 1:__get_user_asm(*(u8*)dst,(u8 __user *)src,ret,"b","b","=q",1);
+ return copy_user_generic(dst, (__force void *)src, size);
+ switch (size) {
+ case 1:__get_user_asm(*(u8 *)dst, (u8 __user *)src,
+ ret, "b", "b", "=q", 1);
return ret;
- case 2:__get_user_asm(*(u16*)dst,(u16 __user *)src,ret,"w","w","=r",2);
+ case 2:__get_user_asm(*(u16 *)dst, (u16 __user *)src,
+ ret, "w", "w", "=r", 2);
return ret;
- case 4:__get_user_asm(*(u32*)dst,(u32 __user *)src,ret,"l","k","=r",4);
+ case 4:__get_user_asm(*(u32 *)dst, (u32 __user *)src,
+ ret, "l", "k", "=r", 4);
+ return ret;
+ case 8:__get_user_asm(*(u64 *)dst, (u64 __user *)src,
+ ret, "q", "", "=r", 8);
return ret;
- case 8:__get_user_asm(*(u64*)dst,(u64 __user *)src,ret,"q","","=r",8);
- return ret;
case 10:
- __get_user_asm(*(u64*)dst,(u64 __user *)src,ret,"q","","=r",16);
- if (unlikely(ret)) return ret;
- __get_user_asm(*(u16*)(8+(char*)dst),(u16 __user *)(8+(char __user *)src),ret,"w","w","=r",2);
- return ret;
+ __get_user_asm(*(u64 *)dst, (u64 __user *)src,
+ ret, "q", "", "=r", 16);
+ if (unlikely(ret))
+ return ret;
+ __get_user_asm(*(u16 *)(8 + (char *)dst),
+ (u16 __user *)(8 + (char __user *)src),
+ ret, "w", "w", "=r", 2);
+ return ret;
case 16:
- __get_user_asm(*(u64*)dst,(u64 __user *)src,ret,"q","","=r",16);
- if (unlikely(ret)) return ret;
- __get_user_asm(*(u64*)(8+(char*)dst),(u64 __user *)(8+(char __user *)src),ret,"q","","=r",8);
- return ret;
+ __get_user_asm(*(u64 *)dst, (u64 __user *)src,
+ ret, "q", "", "=r", 16);
+ if (unlikely(ret))
+ return ret;
+ __get_user_asm(*(u64 *)(8 + (char *)dst),
+ (u64 __user *)(8 + (char __user *)src),
+ ret, "q", "", "=r", 8);
+ return ret;
default:
- return copy_user_generic(dst,(__force void *)src,size);
+ return copy_user_generic(dst, (__force void *)src, size);
}
-}
+}
static __always_inline __must_check
int __copy_to_user(void __user *dst, const void *src, unsigned size)
-{
+{
int ret = 0;
if (!__builtin_constant_p(size))
- return copy_user_generic((__force void *)dst,src,size);
- switch (size) {
- case 1:__put_user_asm(*(u8*)src,(u8 __user *)dst,ret,"b","b","iq",1);
+ return copy_user_generic((__force void *)dst, src, size);
+ switch (size) {
+ case 1:__put_user_asm(*(u8 *)src, (u8 __user *)dst,
+ ret, "b", "b", "iq", 1);
return ret;
- case 2:__put_user_asm(*(u16*)src,(u16 __user *)dst,ret,"w","w","ir",2);
+ case 2:__put_user_asm(*(u16 *)src, (u16 __user *)dst,
+ ret, "w", "w", "ir", 2);
return ret;
- case 4:__put_user_asm(*(u32*)src,(u32 __user *)dst,ret,"l","k","ir",4);
+ case 4:__put_user_asm(*(u32 *)src, (u32 __user *)dst,
+ ret, "l", "k", "ir", 4);
+ return ret;
+ case 8:__put_user_asm(*(u64 *)src, (u64 __user *)dst,
+ ret, "q", "", "ir", 8);
return ret;
- case 8:__put_user_asm(*(u64*)src,(u64 __user *)dst,ret,"q","","ir",8);
- return ret;
case 10:
- __put_user_asm(*(u64*)src,(u64 __user *)dst,ret,"q","","ir",10);
- if (unlikely(ret)) return ret;
+ __put_user_asm(*(u64 *)src, (u64 __user *)dst,
+ ret, "q", "", "ir", 10);
+ if (unlikely(ret))
+ return ret;
asm("":::"memory");
- __put_user_asm(4[(u16*)src],4+(u16 __user *)dst,ret,"w","w","ir",2);
- return ret;
+ __put_user_asm(4[(u16 *)src], 4 + (u16 __user *)dst,
+ ret, "w", "w", "ir", 2);
+ return ret;
case 16:
- __put_user_asm(*(u64*)src,(u64 __user *)dst,ret,"q","","ir",16);
- if (unlikely(ret)) return ret;
+ __put_user_asm(*(u64 *)src, (u64 __user *)dst,
+ ret, "q", "", "ir", 16);
+ if (unlikely(ret))
+ return ret;
asm("":::"memory");
- __put_user_asm(1[(u64*)src],1+(u64 __user *)dst,ret,"q","","ir",8);
- return ret;
+ __put_user_asm(1[(u64 *)src], 1 + (u64 __user *)dst,
+ ret, "q", "", "ir", 8);
+ return ret;
default:
- return copy_user_generic((__force void *)dst,src,size);
+ return copy_user_generic((__force void *)dst, src, size);
}
-}
+}
static __always_inline __must_check
int __copy_in_user(void __user *dst, const void __user *src, unsigned size)
-{
+{
int ret = 0;
if (!__builtin_constant_p(size))
- return copy_user_generic((__force void *)dst,(__force void *)src,size);
- switch (size) {
- case 1: {
+ return copy_user_generic((__force void *)dst,
+ (__force void *)src, size);
+ switch (size) {
+ case 1: {
u8 tmp;
- __get_user_asm(tmp,(u8 __user *)src,ret,"b","b","=q",1);
+ __get_user_asm(tmp, (u8 __user *)src,
+ ret, "b", "b", "=q", 1);
if (likely(!ret))
- __put_user_asm(tmp,(u8 __user *)dst,ret,"b","b","iq",1);
+ __put_user_asm(tmp, (u8 __user *)dst,
+ ret, "b", "b", "iq", 1);
return ret;
}
- case 2: {
+ case 2: {
u16 tmp;
- __get_user_asm(tmp,(u16 __user *)src,ret,"w","w","=r",2);
+ __get_user_asm(tmp, (u16 __user *)src,
+ ret, "w", "w", "=r", 2);
if (likely(!ret))
- __put_user_asm(tmp,(u16 __user *)dst,ret,"w","w","ir",2);
+ __put_user_asm(tmp, (u16 __user *)dst,
+ ret, "w", "w", "ir", 2);
return ret;
}
- case 4: {
+ case 4: {
u32 tmp;
- __get_user_asm(tmp,(u32 __user *)src,ret,"l","k","=r",4);
+ __get_user_asm(tmp, (u32 __user *)src,
+ ret, "l", "k", "=r", 4);
if (likely(!ret))
- __put_user_asm(tmp,(u32 __user *)dst,ret,"l","k","ir",4);
+ __put_user_asm(tmp, (u32 __user *)dst,
+ ret, "l", "k", "ir", 4);
return ret;
}
- case 8: {
+ case 8: {
u64 tmp;
- __get_user_asm(tmp,(u64 __user *)src,ret,"q","","=r",8);
+ __get_user_asm(tmp, (u64 __user *)src,
+ ret, "q", "", "=r", 8);
if (likely(!ret))
- __put_user_asm(tmp,(u64 __user *)dst,ret,"q","","ir",8);
+ __put_user_asm(tmp, (u64 __user *)dst,
+ ret, "q", "", "ir", 8);
return ret;
}
default:
- return copy_user_generic((__force void *)dst,(__force void *)src,size);
+ return copy_user_generic((__force void *)dst,
+ (__force void *)src, size);
}
-}
+}
-__must_check long
+__must_check long
strncpy_from_user(char *dst, const char __user *src, long count);
-__must_check long
+__must_check long
__strncpy_from_user(char *dst, const char __user *src, long count);
__must_check long strnlen_user(const char __user *str, long n);
__must_check long __strnlen_user(const char __user *str, long n);
__must_check unsigned long clear_user(void __user *mem, unsigned long len);
__must_check unsigned long __clear_user(void __user *mem, unsigned long len);
-__must_check long __copy_from_user_inatomic(void *dst, const void __user *src, unsigned size);
+__must_check long __copy_from_user_inatomic(void *dst, const void __user *src,
+ unsigned size);
static __must_check __always_inline int
__copy_to_user_inatomic(void __user *dst, const void *src, unsigned size)
}
#define ARCH_HAS_NOCACHE_UACCESS 1
-extern long __copy_user_nocache(void *dst, const void __user *src, unsigned size, int zerorest);
+extern long __copy_user_nocache(void *dst, const void __user *src,
+ unsigned size, int zerorest);
-static inline int __copy_from_user_nocache(void *dst, const void __user *src, unsigned size)
+static inline int __copy_from_user_nocache(void *dst, const void __user *src,
+ unsigned size)
{
might_sleep();
return __copy_user_nocache(dst, src, size, 1);
}
-static inline int __copy_from_user_inatomic_nocache(void *dst, const void __user *src, unsigned size)
+static inline int __copy_from_user_inatomic_nocache(void *dst,
+ const void __user *src,
+ unsigned size)
{
return __copy_user_nocache(dst, src, size, 0);
}
projects / linux-2.6 / commitdiff