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-rw-r--r--arch/alpha/include/asm/uaccess.h34
1 files changed, 5 insertions, 29 deletions
diff --git a/arch/alpha/include/asm/uaccess.h b/arch/alpha/include/asm/uaccess.h
index b49ec2f8d6e3..766fdfde2b7a 100644
--- a/arch/alpha/include/asm/uaccess.h
+++ b/arch/alpha/include/asm/uaccess.h
@@ -433,36 +433,12 @@ clear_user(void __user *to, long len)
433#undef __module_address 433#undef __module_address
434#undef __module_call 434#undef __module_call
435 435
436/* Returns: -EFAULT if exception before terminator, N if the entire 436#define user_addr_max() \
437 buffer filled, else strlen. */ 437 (segment_eq(get_fs(), USER_DS) ? TASK_SIZE : ~0UL)
438 438
439extern long __strncpy_from_user(char *__to, const char __user *__from, long __to_len); 439extern long strncpy_from_user(char *dest, const char __user *src, long count);
440 440extern __must_check long strlen_user(const char __user *str);
441extern inline long 441extern __must_check long strnlen_user(const char __user *str, long n);
442strncpy_from_user(char *to, const char __user *from, long n)
443{
444 long ret = -EFAULT;
445 if (__access_ok((unsigned long)from, 0, get_fs()))
446 ret = __strncpy_from_user(to, from, n);
447 return ret;
448}
449
450/* Returns: 0 if bad, string length+1 (memory size) of string if ok */
451extern long __strlen_user(const char __user *);
452
453extern inline long strlen_user(const char __user *str)
454{
455 return access_ok(VERIFY_READ,str,0) ? __strlen_user(str) : 0;
456}
457
458/* Returns: 0 if exception before NUL or reaching the supplied limit (N),
459 * a value greater than N if the limit would be exceeded, else strlen. */
460extern long __strnlen_user(const char __user *, long);
461
462extern inline long strnlen_user(const char __user *str, long n)
463{
464 return access_ok(VERIFY_READ,str,0) ? __strnlen_user(str, n) : 0;
465}
466 442
467/* 443/*
468 * About the exception table: 444 * About the exception table: