diff options
Diffstat (limited to 'runsc/boot/loader.go')
| -rw-r--r-- | runsc/boot/loader.go | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/runsc/boot/loader.go b/runsc/boot/loader.go index 0a3f67774..fa169d090 100644 --- a/runsc/boot/loader.go +++ b/runsc/boot/loader.go @@ -756,8 +756,22 @@ func (l *Loader) signalProcess(cid string, pid, signo int32, sendToFGProcess boo ep, ok := l.processes[eid] l.mu.Unlock() + // The caller may be signaling a process not started directly via exec. + // In this case, find the process in the container's PID namespace and + // signal it. if !ok { - return fmt.Errorf("failed to signal container %q PID %d: no such PID", cid, pid) + ep, ok := l.processes[execID{cid: cid}] + if !ok { + return fmt.Errorf("no container with ID: %q", cid) + } + tg := ep.tg.PIDNamespace().ThreadGroupWithID(kernel.ThreadID(pid)) + if tg == nil { + return fmt.Errorf("failed to signal container %q PID %d: no such process", cid, pid) + } + if tg.Leader().ContainerID() != cid { + return fmt.Errorf("process %d is part of a different container: %q", pid, tg.Leader().ContainerID()) + } + return tg.SendSignal(&arch.SignalInfo{Signo: signo}) } if !sendToFGProcess { |