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author | Al Viro <viro@zeniv.linux.org.uk> | 2017-03-28 01:18:37 -0400 |
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committer | Al Viro <viro@zeniv.linux.org.uk> | 2017-03-28 18:23:31 -0400 |
commit | 0c7e9a870eb2a5db03780d7d3f83d0df7623a9c7 (patch) | |
tree | 1205373458941fc0c329d1258bacd530f6fdeda7 /arch/cris/include/asm | |
parent | b71f1bf57f995ae4ce0fe2f907604c841ca8493f (diff) | |
download | linux-stable-0c7e9a870eb2a5db03780d7d3f83d0df7623a9c7.tar.gz linux-stable-0c7e9a870eb2a5db03780d7d3f83d0df7623a9c7.tar.bz2 linux-stable-0c7e9a870eb2a5db03780d7d3f83d0df7623a9c7.zip |
cris: switch to RAW_COPY_USER
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/cris/include/asm')
-rw-r--r-- | arch/cris/include/asm/uaccess.h | 53 |
1 files changed, 11 insertions, 42 deletions
diff --git a/arch/cris/include/asm/uaccess.h b/arch/cris/include/asm/uaccess.h index fc30fdae8786..0d473aec3066 100644 --- a/arch/cris/include/asm/uaccess.h +++ b/arch/cris/include/asm/uaccess.h @@ -336,64 +336,33 @@ static inline size_t clear_user(void __user *to, size_t n) return __do_clear_user(to, n); } -static inline size_t copy_from_user(void *to, const void __user *from, size_t n) +static inline unsigned long +raw_copy_from_user(void *to, const void __user *from, unsigned long n) { - size_t res = n; - if (likely(access_ok(VERIFY_READ, from, n))) { - if (__builtin_constant_p(n)) - res = __constant_copy_from_user(to, from, n); - else - res = __copy_user_in(to, from, n); - } - if (unlikely(res)) - memset(to + n - res , 0, res); - return res; + if (__builtin_constant_p(n)) + return __constant_copy_from_user(to, from, n); + else + return __copy_user_in(to, from, n); } -static inline size_t copy_to_user(void __user *to, const void *from, size_t n) +static inline unsigned long +raw_copy_to_user(void __user *to, const void *from, unsigned long n) { - if (unlikely(!access_ok(VERIFY_WRITE, to, n))) - return n; if (__builtin_constant_p(n)) return __constant_copy_to_user(to, from, n); else return __copy_user(to, from, n); } -/* We let the __ versions of copy_from/to_user inline, because they're often - * used in fast paths and have only a small space overhead. - */ - -static inline unsigned long -__generic_copy_from_user_nocheck(void *to, const void __user *from, - unsigned long n) -{ - return __copy_user_in(to, from, n); -} - -static inline unsigned long -__generic_copy_to_user_nocheck(void __user *to, const void *from, - unsigned long n) -{ - return __copy_user(to, from, n); -} +#define INLINE_COPY_FROM_USER +#define INLINE_COPY_TO_USER static inline unsigned long -__generic_clear_user_nocheck(void __user *to, unsigned long n) +__clear_user(void __user *to, unsigned long n) { return __do_clear_user(to, n); } -/* without checking */ - -#define __copy_to_user(to, from, n) \ - __generic_copy_to_user_nocheck((to), (from), (n)) -#define __copy_from_user(to, from, n) \ - __generic_copy_from_user_nocheck((to), (from), (n)) -#define __copy_to_user_inatomic __copy_to_user -#define __copy_from_user_inatomic __copy_from_user -#define __clear_user(to, n) __generic_clear_user_nocheck((to), (n)) - #define strlen_user(str) strnlen_user((str), 0x7ffffffe) #endif /* _CRIS_UACCESS_H */ |