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sparc: switch to RAW_COPY_USER

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... and drop zeroing in sparc32.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2017-03-21 17:04:45 -04:00
parent 1333eb7856
commit 31af2f36d5
21 changed files with 37 additions and 94 deletions
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29
arch/sparc/include/asm/uaccess_32.h
View File

@@ -235,39 +235,18 @@ int __get_user_bad(void);
unsigned long __copy_user(void __user *to, const void __user *from, unsigned long size);
static inline unsigned long copy_to_user(void __user *to, const void *from, unsigned long n)
static inline unsigned long raw_copy_to_user(void __user *to, const void *from, unsigned long n)
{
if (n && __access_ok((unsigned long) to, n)) {
check_object_size(from, n, true);
return __copy_user(to, (__force void __user *) from, n);
} else
return n;
}
static inline unsigned long __copy_to_user(void __user *to, const void *from, unsigned long n)
{
check_object_size(from, n, true);
return __copy_user(to, (__force void __user *) from, n);
}
static inline unsigned long copy_from_user(void *to, const void __user *from, unsigned long n)
{
if (n && __access_ok((unsigned long) from, n)) {
check_object_size(to, n, false);
return __copy_user((__force void __user *) to, from, n);
} else {
memset(to, 0, n);
return n;
}
}
static inline unsigned long __copy_from_user(void *to, const void __user *from, unsigned long n)
static inline unsigned long raw_copy_from_user(void *to, const void __user *from, unsigned long n)
{
return __copy_user((__force void __user *) to, from, n);
}
#define __copy_to_user_inatomic __copy_to_user
#define __copy_from_user_inatomic __copy_from_user
#define INLINE_COPY_FROM_USER
#define INLINE_COPY_TO_USER
static inline unsigned long __clear_user(void __user *addr, unsigned long size)
{

33
arch/sparc/include/asm/uaccess_64.h
View File

@@ -176,39 +176,19 @@ __asm__ __volatile__( \
int __get_user_bad(void);
unsigned long __must_check ___copy_from_user(void *to,
unsigned long __must_check raw_copy_from_user(void *to,
const void __user *from,
unsigned long size);
static inline unsigned long __must_check
copy_from_user(void *to, const void __user *from, unsigned long size)
{
check_object_size(to, size, false);
return ___copy_from_user(to, from, size);
}
#define __copy_from_user copy_from_user
unsigned long __must_check ___copy_to_user(void __user *to,
unsigned long __must_check raw_copy_to_user(void __user *to,
const void *from,
unsigned long size);
static inline unsigned long __must_check
copy_to_user(void __user *to, const void *from, unsigned long size)
{
check_object_size(from, size, true);
#define INLINE_COPY_FROM_USER
#define INLINE_COPY_TO_USER
return ___copy_to_user(to, from, size);
}
#define __copy_to_user copy_to_user
unsigned long __must_check ___copy_in_user(void __user *to,
unsigned long __must_check raw_copy_in_user(void __user *to,
const void __user *from,
unsigned long size);
static inline unsigned long __must_check
copy_in_user(void __user *to, void __user *from, unsigned long size)
{
return ___copy_in_user(to, from, size);
}
#define __copy_in_user copy_in_user
unsigned long __must_check __clear_user(void __user *, unsigned long);
@@ -217,9 +197,6 @@ unsigned long __must_check __clear_user(void __user *, unsigned long);
__must_check long strlen_user(const char __user *str);
__must_check long strnlen_user(const char __user *str, long n);
#define __copy_to_user_inatomic __copy_to_user
#define __copy_from_user_inatomic __copy_from_user
struct pt_regs;
unsigned long compute_effective_address(struct pt_regs *,
unsigned int insn,