7b062cf4c1
Kill one or more containers using a user-provided signal. If not signal is provided, KILL is used. Signed-off-by: baude <bbaude@redhat.com>
45 lines
1.3 KiB
Go
45 lines
1.3 KiB
Go
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
|
|
}
|