microblaze: Simple __copy_tofrom_user for noMMU (95dfbbe4) · Commits · 戴 / test

arch/microblaze/include/asm/uaccess.h

+6 −6

Original line number	Diff line number	Diff line
		@@ -272,8 +272,9 @@ static inline int clear_user(char *to, int size)
		return size;
		}

		extern unsigned long __copy_tofrom_user(void __user *to,
		const void __user *from, unsigned long size);
		#define __copy_from_user(to, from, n) copy_from_user((to), (from), (n))
		#define __copy_from_user_inatomic(to, from, n) \
		copy_from_user((to), (from), (n))

		#define copy_to_user(to, from, n) \
		(access_ok(VERIFY_WRITE, (to), (n)) ? \
		@@ -290,10 +291,6 @@ extern unsigned long __copy_tofrom_user(void __user *to,
		(void __user *)(from), (n)) \
		: -EFAULT)

		#define __copy_from_user(to, from, n) copy_from_user((to), (from), (n))
		#define __copy_from_user_inatomic(to, from, n) \
		copy_from_user((to), (from), (n))

		extern int __strncpy_user(char to, const char __user from, int len);
		extern int __strnlen_user(const char __user *sstr, int len);

		@@ -305,6 +302,9 @@ extern int __strnlen_user(const char __user *sstr, int len);

		#endif /* CONFIG_MMU */

		extern unsigned long __copy_tofrom_user(void __user *to,
		const void __user *from, unsigned long size);

		/*
		* The exception table consists of pairs of addresses: the first is the
		* address of an instruction that is allowed to fault, and the second is

+7 −0

Original line number	Diff line number	Diff line
		@@ -39,3 +39,10 @@ long strncpy_from_user(char dst, const char __user src, long count)
		__do_strncpy_from_user(dst, src, count, res);
		return res;
		}

		unsigned long __copy_tofrom_user(void __user *to,
		const void __user *from, unsigned long size)
		{
		memcpy(to, from, size);
		return 0;
		}