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