diff options
| author | gVisor bot <gvisor-bot@google.com> | 2019-07-19 10:44:45 -0700 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2019-07-19 10:44:45 -0700 |
| commit | f544509c01970f4143526e7e85bc02b3b1799a8a (patch) | |
| tree | fae21bd74c7b4f632a5ef216362e777c01b4356a /pkg/sentry | |
| parent | 0e040ba6e87f5fdcb23854909aad39aa1883925f (diff) | |
| parent | 2d11fa05f7b705f74c737f5a59fe40414bb6f8d8 (diff) | |
Merge pull request #450 from Pixep:feature/add-clock-boottime-as-monotonic
PiperOrigin-RevId: 258996346
Diffstat (limited to 'pkg/sentry')
| -rw-r--r-- | pkg/sentry/syscalls/linux/sys_time.go | 9 | ||||
| -rw-r--r-- | pkg/sentry/syscalls/linux/sys_timerfd.go | 2 |
2 files changed, 9 insertions, 2 deletions
diff --git a/pkg/sentry/syscalls/linux/sys_time.go b/pkg/sentry/syscalls/linux/sys_time.go index fe8725191..4b3f043a2 100644 --- a/pkg/sentry/syscalls/linux/sys_time.go +++ b/pkg/sentry/syscalls/linux/sys_time.go @@ -121,8 +121,15 @@ func getClock(t *kernel.Task, clockID int32) (ktime.Clock, error) { switch clockID { case linux.CLOCK_REALTIME, linux.CLOCK_REALTIME_COARSE: return t.Kernel().RealtimeClock(), nil - case linux.CLOCK_MONOTONIC, linux.CLOCK_MONOTONIC_COARSE, linux.CLOCK_MONOTONIC_RAW: + case linux.CLOCK_MONOTONIC, linux.CLOCK_MONOTONIC_COARSE, + linux.CLOCK_MONOTONIC_RAW, linux.CLOCK_BOOTTIME: // CLOCK_MONOTONIC approximates CLOCK_MONOTONIC_RAW. + // CLOCK_BOOTTIME is internally mapped to CLOCK_MONOTONIC, as: + // - CLOCK_BOOTTIME should behave as CLOCK_MONOTONIC while also + // including suspend time. + // - gVisor has no concept of suspend/resume. + // - CLOCK_MONOTONIC already includes save/restore time, which is + // the closest to suspend time. return t.Kernel().MonotonicClock(), nil case linux.CLOCK_PROCESS_CPUTIME_ID: return t.ThreadGroup().CPUClock(), nil diff --git a/pkg/sentry/syscalls/linux/sys_timerfd.go b/pkg/sentry/syscalls/linux/sys_timerfd.go index 1ce5ce4c3..cf49b43db 100644 --- a/pkg/sentry/syscalls/linux/sys_timerfd.go +++ b/pkg/sentry/syscalls/linux/sys_timerfd.go @@ -37,7 +37,7 @@ func TimerfdCreate(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel switch clockID { case linux.CLOCK_REALTIME: c = t.Kernel().RealtimeClock() - case linux.CLOCK_MONOTONIC: + case linux.CLOCK_MONOTONIC, linux.CLOCK_BOOTTIME: c = t.Kernel().MonotonicClock() default: return 0, nil, syserror.EINVAL |