| From | Dmitry Safonov <> | Subject | [PATCHv5 13/37] posix-timers: Make timer_settime() time namespace aware | Date | Mon, 29 Jul 2019 22:57:33 +0100 |
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From: Andrei Vagin <avagin@gmail.com>
Wire timer_settime() syscall into time namespace virtualization.
sys_timer_settime() calls the ktime->timer_set() callback. Right now, common_timer_set() is the only implementation for the callback.
There user-supplied timer's value is converted from timespec64 to ktime and then timens_ktime_to_host() can be used to convert namespace's time to the host time.
Inside a time namespace kernel's time differ on a fixed offset from a user-supplied, but only absolute values (TIMER_ABSTIME) must be converted.
Signed-off-by: Andrei Vagin <avagin@openvz.org> Co-developed-by: Dmitry Safonov <dima@arista.com> Signed-off-by: Dmitry Safonov <dima@arista.com> --- kernel/time/posix-timers.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/kernel/time/posix-timers.c b/kernel/time/posix-timers.c index 265fbc816520..c979e720a5a1 100644 --- a/kernel/time/posix-timers.c +++ b/kernel/time/posix-timers.c @@ -857,6 +857,8 @@ int common_timer_set(struct k_itimer *timr, int flags, timr->it_interval = timespec64_to_ktime(new_setting->it_interval); expires = timespec64_to_ktime(new_setting->it_value); + if (flags & TIMER_ABSTIME) + expires = timens_ktime_to_host(timr->it_clock, expires); sigev_none = timr->it_sigev_notify == SIGEV_NONE; kc->timer_arm(timr, expires, flags & TIMER_ABSTIME, sigev_none); -- 2.22.0
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