Commit 48f666c9 authored by Al Viro's avatar Al Viro
Browse files

frv: switch to RAW_COPY_USER 



Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent 9a7513cf

arch/frv/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -16,6 +16,7 @@ config FRV 
	select OLD_SIGACTION

	select HAVE_DEBUG_STACKOVERFLOW

	select ARCH_NO_COHERENT_DMA_MMAP

	select ARCH_HAS_RAW_COPY_USER



config ZONE_DMA

	bool

arch/frv/include/asm/uaccess.h

+23 −34
Original line number Diff line number Diff line
@@ -233,61 +233,50 @@ do { \ 
/*

 *

 */



#define ____force(x) (__force void *)(void __user *)(x)

#ifdef CONFIG_MMU

extern long __memset_user(void *dst, unsigned long count);

extern long __memcpy_user(void *dst, const void *src, unsigned long count);



#define __clear_user(dst,count)			__memset_user(____force(dst), (count))

#define __copy_from_user_inatomic(to, from, n)	__memcpy_user((to), ____force(from), (n))

#define __copy_to_user_inatomic(to, from, n)	__memcpy_user(____force(to), (from), (n))



#else



#define __clear_user(dst,count)			(memset(____force(dst), 0, (count)), 0)

#define __copy_from_user_inatomic(to, from, n)	(memcpy((to), ____force(from), (n)), 0)

#define __copy_to_user_inatomic(to, from, n)	(memcpy(____force(to), (from), (n)), 0)



#endif



static inline unsigned long __must_check

clear_user(void __user *to, unsigned long n)

{

	if (likely(__access_ok(to, n)))

		n = __clear_user(to, n);

	return n;

}



static inline unsigned long __must_check

__copy_to_user(void __user *to, const void *from, unsigned long n)

{

       might_fault();

       return __copy_to_user_inatomic(to, from, n);

}



static inline unsigned long

__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)

{

       might_fault();

       return __copy_from_user_inatomic(to, from, n);

#ifdef CONFIG_MMU

	return __memcpy_user(to, (__force const void *)from, n);

#else

	memcpy(to, (__force const void *)from, n);

	return 0;

#endif

}



static inline long copy_from_user(void *to, const void __user *from, unsigned long n)

static inline unsigned long

raw_copy_to_user(void __user *to, const void *from, unsigned long n)

{

	unsigned long ret = n;



	if (likely(__access_ok(from, n)))

		ret = __copy_from_user(to, from, n);



	if (unlikely(ret != 0))

		memset(to + (n - ret), 0, ret);



	return ret;

#ifdef CONFIG_MMU

	return __memcpy_user((__force void *)to, from, n);

#else

	memcpy((__force void *)to, from, n);

	return 0;

#endif

}

#define INLINE_COPY_TO_USER

#define INLINE_COPY_FROM_USER



static inline long copy_to_user(void __user *to, const void *from, unsigned long n)

static inline unsigned long __must_check

clear_user(void __user *to, unsigned long n)

{

	return likely(__access_ok(to, n)) ? __copy_to_user(to, from, n) : n;

	if (likely(__access_ok(to, n)))

		n = __clear_user(to, n);

	return n;

}



extern long strncpy_from_user(char *dst, const char __user *src, long count);