diff options
| -rw-r--r-- | arch/arm/Kconfig | 1 | ||||
| -rw-r--r-- | arch/arm/include/asm/uaccess.h | 60 |
2 files changed, 15 insertions, 46 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 0d4e71b42c77..6fab7f34739c 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -96,6 +96,7 @@ config ARM select PERF_USE_VMALLOC select RTC_LIB select SYS_SUPPORTS_APM_EMULATION + select ARCH_HAS_RAW_COPY_USER # Above selects are sorted alphabetically; please add new ones # according to that. Thanks. help diff --git a/arch/arm/include/asm/uaccess.h b/arch/arm/include/asm/uaccess.h index 3a9190bc0ffa..2577405d082d 100644 --- a/arch/arm/include/asm/uaccess.h +++ b/arch/arm/include/asm/uaccess.h @@ -455,7 +455,7 @@ extern unsigned long __must_check arm_copy_from_user(void *to, const void __user *from, unsigned long n); static inline unsigned long __must_check -__arch_copy_from_user(void *to, const void __user *from, unsigned long n) +raw_copy_from_user(void *to, const void __user *from, unsigned long n) { unsigned int __ua_flags; @@ -471,7 +471,7 @@ extern unsigned long __must_check __copy_to_user_std(void __user *to, const void *from, unsigned long n); static inline unsigned long __must_check -__arch_copy_to_user(void __user *to, const void *from, unsigned long n) +raw_copy_to_user(void __user *to, const void *from, unsigned long n) { #ifndef CONFIG_UACCESS_WITH_MEMCPY unsigned int __ua_flags; @@ -499,54 +499,22 @@ __clear_user(void __user *addr, unsigned long n) } #else -#define __arch_copy_from_user(to, from, n) \ - (memcpy(to, (void __force *)from, n), 0) -#define __arch_copy_to_user(to, from, n) \ - (memcpy((void __force *)to, from, n), 0) -#define __clear_user(addr, n) (memset((void __force *)addr, 0, n), 0) -#endif - -static inline unsigned long __must_check -__copy_from_user(void *to, const void __user *from, unsigned long n) +static inline unsigned long +raw_copy_from_user(void *to, const void __user *from, unsigned long n) { - check_object_size(to, n, false); - return __arch_copy_from_user(to, from, n); -} - -static inline unsigned long __must_check -copy_from_user(void *to, const void __user *from, unsigned long n) -{ - unsigned long res = n; - - check_object_size(to, n, false); - - if (likely(access_ok(VERIFY_READ, from, n))) - res = __arch_copy_from_user(to, from, n); - if (unlikely(res)) - memset(to + (n - res), 0, res); - return res; -} - -static inline unsigned long __must_check -__copy_to_user(void __user *to, const void *from, unsigned long n) -{ - check_object_size(from, n, true); - - return __arch_copy_to_user(to, from, n); + memcpy(to, (const void __force *)from, n); + return 0; } - -static inline unsigned long __must_check -copy_to_user(void __user *to, const void *from, unsigned long n) +static inline unsigned long +raw_copy_to_user(void __user *to, const void *from, unsigned long n) { - check_object_size(from, n, true); - - if (access_ok(VERIFY_WRITE, to, n)) - n = __arch_copy_to_user(to, from, n); - return n; + memcpy((void __force *)to, from, n); + return 0; } - -#define __copy_to_user_inatomic __copy_to_user -#define __copy_from_user_inatomic __copy_from_user +#define __clear_user(addr, n) (memset((void __force *)addr, 0, n), 0) +#endif +#define INLINE_COPY_TO_USER +#define INLINE_COPY_FROM_USER static inline unsigned long __must_check clear_user(void __user *to, unsigned long n) { |