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nios2: switch to RAW_COPY_USER

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2017-03-22 13:08:32 -04:00
parent 981db65b52
commit de51d6cc2c
3 changed files with 15 additions and 33 deletions
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31
arch/nios2/include/asm/uaccess.h
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@@ -73,36 +73,17 @@ static inline unsigned long __must_check clear_user(void __user *to,
return __clear_user(to, n);
}
extern long __copy_from_user(void *to, const void __user *from,
unsigned long n);
extern long __copy_to_user(void __user *to, const void *from, unsigned long n);
static inline long copy_from_user(void *to, const void __user *from,
unsigned long n)
{
unsigned long res = n;
if (access_ok(VERIFY_READ, from, n))
res = __copy_from_user(to, from, n);
if (unlikely(res))
memset(to + (n - res), 0, res);
return res;
}
static inline long copy_to_user(void __user *to, const void *from,
unsigned long n)
{
if (!access_ok(VERIFY_WRITE, to, n))
return n;
return __copy_to_user(to, from, n);
}
extern unsigned long
raw_copy_from_user(void *to, const void __user *from, unsigned long n);
extern unsigned long
raw_copy_to_user(void __user *to, const void *from, unsigned long n);
#define INLINE_COPY_FROM_USER
#define INLINE_COPY_TO_USER
extern long strncpy_from_user(char *__to, const char __user *__from,
long __len);
extern long strnlen_user(const char __user *s, long n);
#define __copy_from_user_inatomic __copy_from_user
#define __copy_to_user_inatomic __copy_to_user
/* Optimized macros */
#define __get_user_asm(val, insn, addr, err) \
{ \