include/asm/uaccess.h

25 raw_copy_from_user(void *to, const void __user *from, unsigned long n);
28 raw_copy_to_user(void __user *to, const void *from, unsigned long n);
36 _copy_from_user_key(void *to, const void __user *from, unsigned long n, unsigned long key);
39 copy_from_user_key(void *to, const void __user *from, unsigned long n, unsigned long key)
41 	if (check_copy_size(to, n, false))
42 		n = _copy_from_user_key(to, from, n, key);
47 _copy_to_user_key(void __user *to, const void *from, unsigned long n, unsigned long key);
50 copy_to_user_key(void __user *to, const void *from, unsigned long n, unsigned long key)
53 		n = _copy_to_user_key(to, from, n, key);
81 #define __put_user_asm(to, from, size)					\
96 		: [rc] "=&d" (__rc), [_to] "+Q" (*(to))			\
137 #define __get_user_asm(to, from, size)					\
152 		: [rc] "=&d" (__rc), "=Q" (*(to))			\
154 		  [spec] "d" (__oac_spec.val), [_to] "a" (to),		\
279 unsigned long __must_check __clear_user(void __user *to, unsigned long size);
281 static inline unsigned long __must_check clear_user(void __user *to, unsigned long n)
284 	return __clear_user(to, n);
291 #define __put_kernel_asm(val, to, insn)					\
301 		: [rc] "=d" (__rc), [_to] "+Q" (*(to))			\
569  * @ptr: User space address of value to compare to @old and exchange with
570  *	 @new. Must be aligned to sizeof(*@ptr).
571  * @uval: Address where the old value of *@ptr is written to.
572  * @old: Old value. Compared to the content pointed to by @ptr in order to
574  *	 written to *@uval.
575  * @new: New value to place at *@ptr.
576  * @key: Access key to use for checking storage key protection.
581  * The caller must compare *@uval and @old to determine if values have been
582  * exchanged. In case of an exception *@uval is set to zero.
585  *	       -EFAULT: an exception happened when trying to access *@ptr