In order to reuse the very same logic for the year 2038 safe syscalls which we need to introduce for 32bit system, factor out the guts of the 'clock_gettime' syscall.
Signed-off-by: Baolin Wang baolin.wang@linaro.org --- kernel/time/posix-timers.c | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-)
diff --git a/kernel/time/posix-timers.c b/kernel/time/posix-timers.c index dcc632c..ca63626 100644 --- a/kernel/time/posix-timers.c +++ b/kernel/time/posix-timers.c @@ -1124,17 +1124,23 @@ SYSCALL_DEFINE2(clock_settime, const clockid_t, which_clock, return __clock_settime(which_clock, &new_tp); }
-SYSCALL_DEFINE2(clock_gettime, const clockid_t, which_clock, - struct timespec __user *,tp) +static int __clock_gettime(clockid_t which_clock, struct timespec *ts) { struct k_clock *kc = clockid_to_kclock(which_clock); - struct timespec kernel_tp; - int error;
if (!kc) return -EINVAL;
- error = kc->clock_get(which_clock, &kernel_tp); + return kc->clock_get(which_clock, ts); +} + +SYSCALL_DEFINE2(clock_gettime, const clockid_t, which_clock, + struct timespec __user *,tp) +{ + struct timespec kernel_tp; + int error; + + error = __clock_gettime(which_clock, &kernel_tp);
if (!error && copy_to_user(tp, &kernel_tp, sizeof (kernel_tp))) error = -EFAULT;