This patch splits out the guts of the clock_settime syscall and changes the clock_settime syscall implementation to prepare the converting to 64bit methods for the clock_settime syscall function in posix-timers.c file.
Signed-off-by: Baolin Wang baolin.wang@linaro.org --- kernel/time/posix-timers.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-)
diff --git a/kernel/time/posix-timers.c b/kernel/time/posix-timers.c index e0eb1fc..bfcfc78 100644 --- a/kernel/time/posix-timers.c +++ b/kernel/time/posix-timers.c @@ -1075,19 +1075,25 @@ void exit_itimers(struct signal_struct *sig) } }
-SYSCALL_DEFINE2(clock_settime, const clockid_t, which_clock, - const struct timespec __user *, tp) +static int __clock_settime(clockid_t which_clock, struct timespec *ts) { struct k_clock *kc = clockid_to_kclock(which_clock); - struct timespec new_tp;
if (!kc || !kc->clock_set) return -EINVAL;
+ return kc->clock_set(which_clock, ts); +} + +SYSCALL_DEFINE2(clock_settime, const clockid_t, which_clock, + const struct timespec __user *, tp) +{ + struct timespec new_tp; + if (copy_from_user(&new_tp, tp, sizeof (*tp))) return -EFAULT;
- return kc->clock_set(which_clock, &new_tp); + return __clock_settime(which_clock, &new_tp); }
SYSCALL_DEFINE2(clock_gettime, const clockid_t, which_clock,