107 lines
2.9 KiB
Go
107 lines
2.9 KiB
Go
// +build !solaris
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package main
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import (
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"fmt"
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"os"
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"path/filepath"
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"syscall"
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"time"
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"github.com/opencontainers/runc/libcontainer"
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"github.com/urfave/cli"
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)
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func killContainer(container libcontainer.Container) error {
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container.Signal(syscall.SIGKILL, false)
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for i := 0; i < 100; i++ {
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time.Sleep(100 * time.Millisecond)
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if err := container.Signal(syscall.Signal(0), false); err != nil {
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destroy(container)
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return nil
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}
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}
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return fmt.Errorf("container init still running")
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}
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var deleteCommand = cli.Command{
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Name: "delete",
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Usage: "delete any resources held by one or more containers often used with detached containers",
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ArgsUsage: `<container-id> [container-id...]
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Where "<container-id>" is the name for the instance of the container.
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EXAMPLE:
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For example, if the container id is "ubuntu01" and runc list currently shows the
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status of "ubuntu01" as "stopped" the following will delete resources held for
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"ubuntu01" removing "ubuntu01" from the runc list of containers:
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# runc delete ubuntu01`,
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Flags: []cli.Flag{
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cli.BoolFlag{
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Name: "force, f",
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Usage: "Forcibly deletes the container if it is still running (uses SIGKILL)",
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},
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},
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Action: func(context *cli.Context) error {
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hasError := false
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if !context.Args().Present() {
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return fmt.Errorf("runc: \"delete\" requires a minimum of 1 argument")
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}
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factory, err := loadFactory(context)
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if err != nil {
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return err
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}
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for _, id := range context.Args() {
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container, err := factory.Load(id)
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if err != nil {
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if lerr, ok := err.(libcontainer.Error); ok && lerr.Code() == libcontainer.ContainerNotExists {
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// if there was an aborted start or something of the sort then the container's directory could exist but
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// libcontainer does not see it because the state.json file inside that directory was never created.
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path := filepath.Join(context.GlobalString("root"), id)
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if err := os.RemoveAll(path); err != nil {
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fmt.Fprintf(os.Stderr, "remove %s: %v\n", path, err)
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}
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fmt.Fprintf(os.Stderr, "container %s does not exist\n", id)
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}
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hasError = true
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continue
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}
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s, err := container.Status()
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if err != nil {
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fmt.Fprintf(os.Stderr, "status for %s: %v\n", id, err)
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hasError = true
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continue
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}
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switch s {
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case libcontainer.Stopped:
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destroy(container)
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case libcontainer.Created:
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err := killContainer(container)
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if err != nil {
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fmt.Fprintf(os.Stderr, "kill container %s: %v\n", id, err)
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hasError = true
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}
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default:
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if context.Bool("force") {
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err := killContainer(container)
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if err != nil {
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fmt.Fprintf(os.Stderr, "kill container %s: %v\n", id, err)
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hasError = true
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}
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} else {
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fmt.Fprintf(os.Stderr, "cannot delete container %s that is not stopped: %s\n", id, s)
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hasError = true
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}
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}
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}
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if hasError {
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return fmt.Errorf("one or more of the container deletions failed")
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}
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return nil
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},
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}
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