score: switch to RAW_COPY_USER (dc142535) · Commits · 戴 / test

arch/score/Kconfig

+1 −0

Original line number	Diff line number	Diff line
		@@ -15,6 +15,7 @@ config SCORE
		select MODULES_USE_ELF_REL
		select CLONE_BACKWARDS
		select CPU_NO_EFFICIENT_FFS
		select ARCH_HAS_RAW_COPY_USER

		choice
		prompt "System type"

arch/score/include/asm/uaccess.h

+6 −48

Original line number	Diff line number	Diff line
		@@ -295,61 +295,19 @@ extern void __put_user_unknown(void);
		extern int __copy_tofrom_user(void to, const void from, unsigned long len);

		static inline unsigned long
		copy_from_user(void to, const void from, unsigned long len)
		raw_copy_from_user(void to, const void __user from, unsigned long len)
		{
		unsigned long res = len;

		if (likely(access_ok(VERIFY_READ, from, len)))
		res = __copy_tofrom_user(to, from, len);

		if (unlikely(res))
		memset(to + (len - res), 0, res);

		return res;
		return __copy_tofrom_user(to, (__force const void *)from, len);
		}

		static inline unsigned long
		copy_to_user(void to, const void from, unsigned long len)
		raw_copy_to_user(void __user to, const void from, unsigned long len)
		{
		if (likely(access_ok(VERIFY_WRITE, to, len)))
		len = __copy_tofrom_user(to, from, len);

		return len;
		return __copy_tofrom_user((__force void *)to, from, len);
		}

		static inline unsigned long
		__copy_from_user(void to, const void from, unsigned long len)
		{
		unsigned long left = __copy_tofrom_user(to, from, len);
		if (unlikely(left))
		memset(to + (len - left), 0, left);
		return left;
		}

		#define __copy_to_user(to, from, len) \
		__copy_tofrom_user((to), (from), (len))

		static inline unsigned long
		__copy_to_user_inatomic(void to, const void from, unsigned long len)
		{
		return __copy_to_user(to, from, len);
		}

		static inline unsigned long
		__copy_from_user_inatomic(void to, const void from, unsigned long len)
		{
		return __copy_tofrom_user(to, from, len);
		}

		#define __copy_in_user(to, from, len) __copy_tofrom_user(to, from, len)

		static inline unsigned long
		copy_in_user(void to, const void from, unsigned long len)
		{
		if (access_ok(VERIFY_READ, from, len) &&
		access_ok(VERIFY_WRITE, to, len))
		return __copy_tofrom_user(to, from, len);
		}
		#define INLINE_COPY_FROM_USER
		#define INLINE_COPY_TO_USER

		/*
		* __clear_user: - Zero a block of memory in user space, with less checking.

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