diff options
| -rw-r--r-- | arch/xtensa/include/asm/uaccess.h | 18 |
1 files changed, 8 insertions, 10 deletions
diff --git a/arch/xtensa/include/asm/uaccess.h b/arch/xtensa/include/asm/uaccess.h index 0fd9b4086ae2..e57f0d0a88d8 100644 --- a/arch/xtensa/include/asm/uaccess.h +++ b/arch/xtensa/include/asm/uaccess.h @@ -272,15 +272,15 @@ raw_copy_to_user(void __user *to, const void *from, unsigned long n) */ static inline unsigned long -__xtensa_clear_user(void *addr, unsigned long size) +__xtensa_clear_user(void __user *addr, unsigned long size) { - if (!__memset(addr, 0, size)) + if (!__memset((void __force *)addr, 0, size)) return size; return 0; } static inline unsigned long -clear_user(void *addr, unsigned long size) +clear_user(void __user *addr, unsigned long size) { if (access_ok(addr, size)) return __xtensa_clear_user(addr, size); @@ -292,10 +292,10 @@ clear_user(void *addr, unsigned long size) #ifndef CONFIG_GENERIC_STRNCPY_FROM_USER -extern long __strncpy_user(char *, const char *, long); +extern long __strncpy_user(char *dst, const char __user *src, long count); static inline long -strncpy_from_user(char *dst, const char *src, long count) +strncpy_from_user(char *dst, const char __user *src, long count) { if (access_ok(src, 1)) return __strncpy_user(dst, src, count); @@ -308,13 +308,11 @@ long strncpy_from_user(char *dst, const char *src, long count); /* * Return the size of a string (including the ending 0!) */ -extern long __strnlen_user(const char *, long); +extern long __strnlen_user(const char __user *str, long len); -static inline long strnlen_user(const char *str, long len) +static inline long strnlen_user(const char __user *str, long len) { - unsigned long top = __kernel_ok ? ~0UL : TASK_SIZE - 1; - - if ((unsigned long)str > top) + if (!access_ok(str, 1)) return 0; return __strnlen_user(str, len); } |