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-rw-r--r--pkg/sentry/syscalls/linux/sys_time.go9
-rw-r--r--pkg/sentry/syscalls/linux/sys_timerfd.go2
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