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authorgVisor bot <gvisor-bot@google.com>2020-08-20 20:36:02 +0000
committergVisor bot <gvisor-bot@google.com>2020-08-20 20:36:02 +0000
commit8c844b60d240b3b00a45620044be39e8797294f7 (patch)
tree0961bd86800ea4a7f39f348ce57a3d012a72cc20 /pkg/sentry/kernel/task_signals.go
parent38234fef22552b4b44bbac542abd68212690378e (diff)
parent129018ab3d945758b800aa5e6fe1a01d0e99446c (diff)
Merge release-20200810.0-74-g129018ab3 (automated)
Diffstat (limited to 'pkg/sentry/kernel/task_signals.go')
-rw-r--r--pkg/sentry/kernel/task_signals.go12
1 files changed, 7 insertions, 5 deletions
diff --git a/pkg/sentry/kernel/task_signals.go b/pkg/sentry/kernel/task_signals.go
index d6a2040bc..feaa38596 100644
--- a/pkg/sentry/kernel/task_signals.go
+++ b/pkg/sentry/kernel/task_signals.go
@@ -319,8 +319,9 @@ func (t *Task) SignalReturn(rt bool) (*SyscallControl, error) {
// Sigtimedwait implements the semantics of sigtimedwait(2).
//
-// Preconditions: The caller must be running on the task goroutine. t.exitState
-// < TaskExitZombie.
+// Preconditions:
+// * The caller must be running on the task goroutine.
+// * t.exitState < TaskExitZombie.
func (t *Task) Sigtimedwait(set linux.SignalSet, timeout time.Duration) (*arch.SignalInfo, error) {
// set is the set of signals we're interested in; invert it to get the set
// of signals to block.
@@ -584,8 +585,9 @@ func (t *Task) SignalMask() linux.SignalSet {
// SetSignalMask sets t's signal mask.
//
-// Preconditions: SetSignalMask can only be called by the task goroutine.
-// t.exitState < TaskExitZombie.
+// Preconditions:
+// * The caller must be running on the task goroutine.
+// * t.exitState < TaskExitZombie.
func (t *Task) SetSignalMask(mask linux.SignalSet) {
// By precondition, t prevents t.tg from completing an execve and mutating
// t.tg.signalHandlers, so we can skip the TaskSet mutex.
@@ -631,7 +633,7 @@ func (t *Task) setSignalMaskLocked(mask linux.SignalSet) {
// SetSavedSignalMask sets the saved signal mask (see Task.savedSignalMask's
// comment).
//
-// Preconditions: SetSavedSignalMask can only be called by the task goroutine.
+// Preconditions: The caller must be running on the task goroutine.
func (t *Task) SetSavedSignalMask(mask linux.SignalSet) {
t.savedSignalMask = mask
t.haveSavedSignalMask = true