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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
}
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