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[ARM] Add __must_check to uaccess functions
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Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Russell King authored and Russell King committed Oct 28, 2006
1 parent a233bf9 commit 9957329
Showing 1 changed file with 10 additions and 10 deletions.
20 changes: 10 additions & 10 deletions include/asm-arm/uaccess.h
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Original file line number Diff line number Diff line change
Expand Up @@ -383,19 +383,19 @@ do { \


#ifdef CONFIG_MMU
extern unsigned long __copy_from_user(void *to, const void __user *from, unsigned long n);
extern unsigned long __copy_to_user(void __user *to, const void *from, unsigned long n);
extern unsigned long __clear_user(void __user *addr, unsigned long n);
extern unsigned long __must_check __copy_from_user(void *to, const void __user *from, unsigned long n);
extern unsigned long __must_check __copy_to_user(void __user *to, const void *from, unsigned long n);
extern unsigned long __must_check __clear_user(void __user *addr, unsigned long n);
#else
#define __copy_from_user(to,from,n) (memcpy(to, (void __force *)from, n), 0)
#define __copy_to_user(to,from,n) (memcpy((void __force *)to, from, n), 0)
#define __clear_user(addr,n) (memset((void __force *)addr, 0, n), 0)
#endif

extern unsigned long __strncpy_from_user(char *to, const char __user *from, unsigned long count);
extern unsigned long __strnlen_user(const char __user *s, long n);
extern unsigned long __must_check __strncpy_from_user(char *to, const char __user *from, unsigned long count);
extern unsigned long __must_check __strnlen_user(const char __user *s, long n);

static inline unsigned long copy_from_user(void *to, const void __user *from, unsigned long n)
static inline unsigned long __must_check copy_from_user(void *to, const void __user *from, unsigned long n)
{
if (access_ok(VERIFY_READ, from, n))
n = __copy_from_user(to, from, n);
Expand All @@ -404,7 +404,7 @@ static inline unsigned long copy_from_user(void *to, const void __user *from, un
return n;
}

static inline unsigned long copy_to_user(void __user *to, const void *from, unsigned long n)
static inline unsigned long __must_check copy_to_user(void __user *to, const void *from, unsigned long n)
{
if (access_ok(VERIFY_WRITE, to, n))
n = __copy_to_user(to, from, n);
Expand All @@ -414,14 +414,14 @@ static inline unsigned long copy_to_user(void __user *to, const void *from, unsi
#define __copy_to_user_inatomic __copy_to_user
#define __copy_from_user_inatomic __copy_from_user

static inline unsigned long clear_user(void __user *to, unsigned long n)
static inline unsigned long __must_check clear_user(void __user *to, unsigned long n)
{
if (access_ok(VERIFY_WRITE, to, n))
n = __clear_user(to, n);
return n;
}

static inline long strncpy_from_user(char *dst, const char __user *src, long count)
static inline long __must_check strncpy_from_user(char *dst, const char __user *src, long count)
{
long res = -EFAULT;
if (access_ok(VERIFY_READ, src, 1))
Expand All @@ -431,7 +431,7 @@ static inline long strncpy_from_user(char *dst, const char __user *src, long cou

#define strlen_user(s) strnlen_user(s, ~0UL >> 1)

static inline long strnlen_user(const char __user *s, long n)
static inline long __must_check strnlen_user(const char __user *s, long n)
{
unsigned long res = 0;

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