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s390/uaccess: normalize order of parameters of indirect uaccess function calls

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For some unknown reason the indirect uaccess functions on s390 implement a
different parameter order than what is usual.

e.g.:

unsigned long copy_to_user(void *to, const void *from, unsigned long n);
vs.
size_t (*copy_to_user)(size_t n, void __user * to, const void *from);

Let's get rid of this confusing parameter reordering.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Heiko Carstens
2014-01-22 14:49:30 +01:00
committed by Martin Schwidefsky
parent 137a14f434
commit cfa785e623
3 changed files with 54 additions and 54 deletions
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54
arch/s390/include/asm/uaccess.h
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@@ -93,12 +93,12 @@ static inline unsigned long extable_fixup(const struct exception_table_entry *x)
#define ARCH_HAS_SEARCH_EXTABLE
struct uaccess_ops {
size_t (*copy_from_user)(size_t, const void __user *, void *);
size_t (*copy_to_user)(size_t, void __user *, const void *);
size_t (*copy_in_user)(size_t, void __user *, const void __user *);
size_t (*clear_user)(size_t, void __user *);
size_t (*strnlen_user)(size_t, const char __user *);
size_t (*strncpy_from_user)(size_t, const char __user *, char *);
size_t (*copy_from_user)(void *, const void __user *, size_t);
size_t (*copy_to_user)(void __user *, const void *, size_t);
size_t (*copy_in_user)(void __user *, const void __user *, size_t);
size_t (*clear_user)(void __user *, size_t);
size_t (*strnlen_user)(const char __user *, size_t);
size_t (*strncpy_from_user)(char *, const char __user *, size_t);
int (*futex_atomic_op)(int op, u32 __user *, int oparg, int *old);
int (*futex_atomic_cmpxchg)(u32 *, u32 __user *, u32 old, u32 new);
};
@@ -109,15 +109,15 @@ extern struct uaccess_ops uaccess_pt;
extern int __handle_fault(unsigned long, unsigned long, int);
static inline int __put_user_fn(size_t size, void __user *ptr, void *x)
static inline int __put_user_fn(void *x, void __user *ptr, size_t size)
{
size = uaccess.copy_to_user(size, ptr, x);
size = uaccess.copy_to_user(ptr, x, size);
return size ? -EFAULT : size;
}
static inline int __get_user_fn(size_t size, const void __user *ptr, void *x)
static inline int __get_user_fn(void *x, const void __user *ptr, size_t size)
{
size = uaccess.copy_from_user(size, ptr, x);
size = uaccess.copy_from_user(x, ptr, size);
return size ? -EFAULT : size;
}
@@ -135,8 +135,8 @@ static inline int __get_user_fn(size_t size, const void __user *ptr, void *x)
case 2: \
case 4: \
case 8: \
__pu_err = __put_user_fn(sizeof (*(ptr)), \
ptr, &__x); \
__pu_err = __put_user_fn(&__x, ptr, \
sizeof(*(ptr))); \
break; \
default: \
__put_user_bad(); \
@@ -161,29 +161,29 @@ extern int __put_user_bad(void) __attribute__((noreturn));
switch (sizeof(*(ptr))) { \
case 1: { \
unsigned char __x; \
__gu_err = __get_user_fn(sizeof (*(ptr)), \
ptr, &__x); \
__gu_err = __get_user_fn(&__x, ptr, \
sizeof(*(ptr))); \
(x) = *(__force __typeof__(*(ptr)) *) &__x; \
break; \
}; \
case 2: { \
unsigned short __x; \
__gu_err = __get_user_fn(sizeof (*(ptr)), \
ptr, &__x); \
__gu_err = __get_user_fn(&__x, ptr, \
sizeof(*(ptr))); \
(x) = *(__force __typeof__(*(ptr)) *) &__x; \
break; \
}; \
case 4: { \
unsigned int __x; \
__gu_err = __get_user_fn(sizeof (*(ptr)), \
ptr, &__x); \
__gu_err = __get_user_fn(&__x, ptr, \
sizeof(*(ptr))); \
(x) = *(__force __typeof__(*(ptr)) *) &__x; \
break; \
}; \
case 8: { \
unsigned long long __x; \
__gu_err = __get_user_fn(sizeof (*(ptr)), \
ptr, &__x); \
__gu_err = __get_user_fn(&__x, ptr, \
sizeof(*(ptr))); \
(x) = *(__force __typeof__(*(ptr)) *) &__x; \
break; \
}; \
@@ -222,7 +222,7 @@ extern int __get_user_bad(void) __attribute__((noreturn));
static inline unsigned long __must_check
__copy_to_user(void __user *to, const void *from, unsigned long n)
{
return uaccess.copy_to_user(n, to, from);
return uaccess.copy_to_user(to, from, n);
}
#define __copy_to_user_inatomic __copy_to_user
@@ -268,7 +268,7 @@ copy_to_user(void __user *to, const void *from, unsigned long n)
static inline unsigned long __must_check
__copy_from_user(void *to, const void __user *from, unsigned long n)
{
return uaccess.copy_from_user(n, from, to);
return uaccess.copy_from_user(to, from, n);
}
extern void copy_from_user_overflow(void)
@@ -309,7 +309,7 @@ copy_from_user(void *to, const void __user *from, unsigned long n)
static inline unsigned long __must_check
__copy_in_user(void __user *to, const void __user *from, unsigned long n)
{
return uaccess.copy_in_user(n, to, from);
return uaccess.copy_in_user(to, from, n);
}
static inline unsigned long __must_check
@@ -326,14 +326,14 @@ static inline long __must_check
strncpy_from_user(char *dst, const char __user *src, long count)
{
might_fault();
return uaccess.strncpy_from_user(count, src, dst);
return uaccess.strncpy_from_user(dst, src, count);
}
static inline unsigned long
strnlen_user(const char __user * src, unsigned long n)
{
might_fault();
return uaccess.strnlen_user(n, src);
return uaccess.strnlen_user(src, n);
}
/**
@@ -359,14 +359,14 @@ strnlen_user(const char __user * src, unsigned long n)
static inline unsigned long __must_check
__clear_user(void __user *to, unsigned long n)
{
return uaccess.clear_user(n, to);
return uaccess.clear_user(to, n);
}
static inline unsigned long __must_check
clear_user(void __user *to, unsigned long n)
{
might_fault();
return uaccess.clear_user(n, to);
return uaccess.clear_user(to, n);
}
extern int copy_to_user_real(void __user *dest, void *src, size_t count);