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Commit 40e11e33 authored by Michal Simek's avatar Michal Simek
Browse files

microblaze: uaccess: Fix strncpy_from_user function 



Generic implementation for noMMU and MMU version

Signed-off-by: default avatarMichal Simek <monstr@monstr.eu>
parent 4270690b

arch/microblaze/include/asm/uaccess.h

+11 −3
Original line number Diff line number Diff line
@@ -407,11 +407,19 @@ static inline long copy_to_user(void __user *to, 
}



extern int __strncpy_user(char *to, const char __user *from, int len);



#define __strncpy_from_user	__strncpy_user



static inline long

strncpy_from_user(char *dst, const char __user *src, long count)

{

	if (!access_ok(VERIFY_READ, src, 1))

		return -EFAULT;

	return __strncpy_from_user(dst, src, count);

}



extern int __strnlen_user(const char __user *sstr, int len);



#define strncpy_from_user(to, from, len)	\

		(access_ok(VERIFY_READ, from, 1) ?	\

			__strncpy_user(to, from, len) : -EFAULT)

#define strnlen_user(str, len)	\

		(access_ok(VERIFY_READ, str, 1) ? __strnlen_user(str, len) : 0)