package libkpod import ( "github.com/docker/docker/pkg/signal" "github.com/kubernetes-incubator/cri-o/oci" "github.com/kubernetes-incubator/cri-o/utils" "github.com/pkg/errors" "os" "syscall" ) // Reverse lookup signal string from its map func findStringInSignalMap(killSignal syscall.Signal) (string, error) { for k, v := range signal.SignalMap { if v == killSignal { return k, nil } } return "", errors.Errorf("unable to convert signal to string") } // ContainerKill sends the user provided signal to the containers primary process. func (c *ContainerServer) ContainerKill(container string, killSignal syscall.Signal) (string, error) { // nolint ctr, err := c.LookupContainer(container) if err != nil { return "", errors.Wrapf(err, "failed to find container %s", container) } c.runtime.UpdateStatus(ctr) cStatus := c.runtime.ContainerStatus(ctr) // If the container is not running, error and move on. if cStatus.Status != oci.ContainerStateRunning { return "", errors.Errorf("cannot kill container %s: it is not running", container) } signalString, err := findStringInSignalMap(killSignal) if err != nil { return "", err } if err := utils.ExecCmdWithStdStreams(os.Stdin, os.Stdout, os.Stderr, c.runtime.Path(ctr), "kill", ctr.ID(), signalString); err != nil { return "", err } c.ContainerStateToDisk(ctr) return ctr.ID(), nil }