diff options
author | Mike Frysinger <vapier@gentoo.org> | 2009-06-14 02:00:03 -0400 |
---|---|---|
committer | Arnd Bergmann <arnd@arndb.de> | 2009-06-19 08:58:08 -0400 |
commit | a9ede5b355aabd667ed690f858c925a23927027b (patch) | |
tree | ee3fe26530679c33fa3aad5386e6961b3bf399e7 /include | |
parent | 9844813f226f6d07e1544e915529cb88f4fcb868 (diff) |
asm-generic: uaccess: fix up local access_ok() usage
There's no reason that I can see to use the short __access_ok() form
directly when the access_ok() is clearer in intent and for most people,
expands to the same C code (i.e. always specify the first field -- access
type). Not all no-mmu systems lack memory protection, so the read/write
could feasibly be checked.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'include')
-rw-r--r-- | include/asm-generic/uaccess.h | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/include/asm-generic/uaccess.h b/include/asm-generic/uaccess.h index 5dd511b62ce9..b218b8513d04 100644 --- a/include/asm-generic/uaccess.h +++ b/include/asm-generic/uaccess.h | |||
@@ -163,7 +163,7 @@ static inline __must_check long __copy_to_user(void __user *to, | |||
163 | #define put_user(x, ptr) \ | 163 | #define put_user(x, ptr) \ |
164 | ({ \ | 164 | ({ \ |
165 | might_sleep(); \ | 165 | might_sleep(); \ |
166 | __access_ok(ptr, sizeof (*ptr)) ? \ | 166 | access_ok(VERIFY_WRITE, ptr, sizeof(*ptr)) ? \ |
167 | __put_user(x, ptr) : \ | 167 | __put_user(x, ptr) : \ |
168 | -EFAULT; \ | 168 | -EFAULT; \ |
169 | }) | 169 | }) |
@@ -219,7 +219,7 @@ extern int __put_user_bad(void) __attribute__((noreturn)); | |||
219 | #define get_user(x, ptr) \ | 219 | #define get_user(x, ptr) \ |
220 | ({ \ | 220 | ({ \ |
221 | might_sleep(); \ | 221 | might_sleep(); \ |
222 | __access_ok(ptr, sizeof (*ptr)) ? \ | 222 | access_ok(VERIFY_READ, ptr, sizeof(*ptr)) ? \ |
223 | __get_user(x, ptr) : \ | 223 | __get_user(x, ptr) : \ |
224 | -EFAULT; \ | 224 | -EFAULT; \ |
225 | }) | 225 | }) |
@@ -244,7 +244,7 @@ static inline long copy_from_user(void *to, | |||
244 | const void __user * from, unsigned long n) | 244 | const void __user * from, unsigned long n) |
245 | { | 245 | { |
246 | might_sleep(); | 246 | might_sleep(); |
247 | if (__access_ok(from, n)) | 247 | if (access_ok(VERIFY_READ, from, n)) |
248 | return __copy_from_user(to, from, n); | 248 | return __copy_from_user(to, from, n); |
249 | else | 249 | else |
250 | return n; | 250 | return n; |
@@ -254,7 +254,7 @@ static inline long copy_to_user(void __user *to, | |||
254 | const void *from, unsigned long n) | 254 | const void *from, unsigned long n) |
255 | { | 255 | { |
256 | might_sleep(); | 256 | might_sleep(); |
257 | if (__access_ok(to, n)) | 257 | if (access_ok(VERIFY_WRITE, to, n)) |
258 | return __copy_to_user(to, from, n); | 258 | return __copy_to_user(to, from, n); |
259 | else | 259 | else |
260 | return n; | 260 | return n; |
@@ -278,7 +278,7 @@ __strncpy_from_user(char *dst, const char __user *src, long count) | |||
278 | static inline long | 278 | static inline long |
279 | strncpy_from_user(char *dst, const char __user *src, long count) | 279 | strncpy_from_user(char *dst, const char __user *src, long count) |
280 | { | 280 | { |
281 | if (!__access_ok(src, 1)) | 281 | if (!access_ok(VERIFY_READ, src, 1)) |
282 | return -EFAULT; | 282 | return -EFAULT; |
283 | return __strncpy_from_user(dst, src, count); | 283 | return __strncpy_from_user(dst, src, count); |
284 | } | 284 | } |
@@ -318,7 +318,7 @@ static inline __must_check unsigned long | |||
318 | clear_user(void __user *to, unsigned long n) | 318 | clear_user(void __user *to, unsigned long n) |
319 | { | 319 | { |
320 | might_sleep(); | 320 | might_sleep(); |
321 | if (!__access_ok(to, n)) | 321 | if (!access_ok(VERIFY_WRITE, to, n)) |
322 | return n; | 322 | return n; |
323 | 323 | ||
324 | return __clear_user(to, n); | 324 | return __clear_user(to, n); |