diff options
Diffstat (limited to 'arch/x86_64/lib/usercopy.c')
| -rw-r--r-- | arch/x86_64/lib/usercopy.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/arch/x86_64/lib/usercopy.c b/arch/x86_64/lib/usercopy.c index db8abba1ad81..9bc2c295818e 100644 --- a/arch/x86_64/lib/usercopy.c +++ b/arch/x86_64/lib/usercopy.c @@ -109,14 +109,11 @@ unsigned long clear_user(void __user *to, unsigned long n) * Return 0 on exception, a value greater than N if too long */ -long strnlen_user(const char __user *s, long n) +long __strnlen_user(const char __user *s, long n) { long res = 0; char c; - if (!access_ok(VERIFY_READ, s, n)) - return 0; - while (1) { if (res>n) return n+1; @@ -129,6 +126,13 @@ long strnlen_user(const char __user *s, long n) } } +long strnlen_user(const char __user *s, long n) +{ + if (!access_ok(VERIFY_READ, s, n)) + return 0; + return __strnlen_user(s, n); +} + long strlen_user(const char __user *s) { long res = 0; |