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authorJonas Bonn <jonas@southpole.se>2012-05-27 10:25:47 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2012-05-27 21:00:32 -0700
commitb48b2c3e50433ff6f7e46186daa7f986bd960215 (patch)
tree9a10b2130582f99df5ae7eae0b959425e791118c /arch/openrisc/include
parent1629372caaaf7ef744d3b983be56b99468a68ff8 (diff)
downloadlinux-b48b2c3e50433ff6f7e46186daa7f986bd960215.tar.gz
openrisc: use generic strnlen_user() function
The generic version is both easier to support and more correct. Signed-off-by: Jonas Bonn <jonas@southpole.se> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/openrisc/include')
-rw-r--r--arch/openrisc/include/asm/uaccess.h30
1 files changed, 2 insertions, 28 deletions
diff --git a/arch/openrisc/include/asm/uaccess.h b/arch/openrisc/include/asm/uaccess.h
index 04b93de9263..ab2e7a198a4 100644
--- a/arch/openrisc/include/asm/uaccess.h
+++ b/arch/openrisc/include/asm/uaccess.h
@@ -318,33 +318,7 @@ clear_user(void *addr, unsigned long size)
extern long strncpy_from_user(char *dest, const char __user *src, long count);
-/*
- * Return the size of a string (including the ending 0)
- *
- * Return 0 for error
- */
-
-extern int __strnlen_user(const char *str, long len, unsigned long top);
-
-/*
- * Returns the length of the string at str (including the null byte),
- * or 0 if we hit a page we can't access,
- * or something > len if we didn't find a null byte.
- *
- * The `top' parameter to __strnlen_user is to make sure that
- * we can never overflow from the user area into kernel space.
- */
-static inline long strnlen_user(const char __user *str, long len)
-{
- unsigned long top = (unsigned long)get_fs();
- unsigned long res = 0;
-
- if (__addr_ok(str))
- res = __strnlen_user(str, len, top);
-
- return res;
-}
-
-#define strlen_user(str) strnlen_user(str, TASK_SIZE-1)
+extern __must_check long strlen_user(const char __user *str);
+extern __must_check long strnlen_user(const char __user *str, long n);
#endif /* __ASM_OPENRISC_UACCESS_H */