// killWithSignal sends the container the given signal. This wrapper for the
// host specific kill command prepares the container before attempting
// to send the signal. An error is returned if the container is paused
// or not running, or if there is a problem returned from the
// underlying kill command.
func (daemon *Daemon) killWithSignal(container *container.Container, sig int) error {
logrus.Debugf("Sending kill signal %d to container %s", sig, container.ID)
container.Lock()
defer container.Unlock()
// We could unpause the container for them rather than returning this error
if container.Paused {
return fmt.Errorf("Container %s is paused. Unpause the container before stopping", container.ID)
}
if !container.Running {
return errNotRunning{container.ID}
}
if container.Config.StopSignal != "" {
containerStopSignal, err := signal.ParseSignal(container.Config.StopSignal)
if err != nil {
return err
}
if containerStopSignal == syscall.Signal(sig) {
container.ExitOnNext()
}
} else {
container.ExitOnNext()
}
if !daemon.IsShuttingDown() {
container.HasBeenManuallyStopped = true
}
// if the container is currently restarting we do not need to send the signal
// to the process. Telling the monitor that it should exit on its next event
// loop is enough
if container.Restarting {
return nil
}
if err := daemon.kill(container, sig); err != nil {
err = fmt.Errorf("Cannot kill container %s: %s", container.ID, err)
// if container or process not exists, ignore the error
if strings.Contains(err.Error(), "container not found") ||
strings.Contains(err.Error(), "no such process") {
logrus.Warnf("container kill failed because of 'container not found' or 'no such process': %s", err.Error())
} else {
return err
}
}
attributes := map[string]string{
"signal": fmt.Sprintf("%d", sig),
}
daemon.LogContainerEventWithAttributes(container, "kill", attributes)
return nil
}
// killWithSignal sends the container the given signal. This wrapper for the
// host specific kill command prepares the container before attempting
// to send the signal. An error is returned if the container is paused
// or not running, or if there is a problem returned from the
// underlying kill command.
func (daemon *Daemon) killWithSignal(container *container.Container, sig int) error {
logrus.Debugf("Sending %d to %s", sig, container.ID)
container.Lock()
defer container.Unlock()
// We could unpause the container for them rather than returning this error
if container.Paused {
return fmt.Errorf("Container %s is paused. Unpause the container before stopping", container.ID)
}
if !container.Running {
return errNotRunning{container.ID}
}
container.ExitOnNext()
if !daemon.IsShuttingDown() {
container.HasBeenManuallyStopped = true
}
// if the container is currently restarting we do not need to send the signal
// to the process. Telling the monitor that it should exit on it's next event
// loop is enough
if container.Restarting {
return nil
}
if err := daemon.kill(container, sig); err != nil {
return fmt.Errorf("Cannot kill container %s: %s", container.ID, err)
}
attributes := map[string]string{
"signal": fmt.Sprintf("%d", sig),
}
daemon.LogContainerEventWithAttributes(container, "kill", attributes)
return nil
}