mirror of
https://github.com/opencontainers/runc.git
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1545ea69b7
Error messages should not usually contain newlines. Testing shows that the error runc delete prints is the same before and after this commit: [kir@kir-rhat runc-tst]$ sudo ../runc/runc delete xx3 ERRO[0000] cannot delete container xx3 that is not stopped: running [kir@kir-rhat runc-tst]$ Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
88 lines
2.2 KiB
Go
88 lines
2.2 KiB
Go
package main
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import (
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"errors"
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"fmt"
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"os"
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"path/filepath"
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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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"golang.org/x/sys/unix"
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)
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func killContainer(container libcontainer.Container) error {
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_ = container.Signal(unix.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(unix.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 errors.New("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 the container often used with detached container",
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ArgsUsage: `<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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if err := checkArgs(context, 1, exactArgs); err != nil {
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return err
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}
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id := context.Args().First()
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force := context.Bool("force")
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container, err := getContainer(context)
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if err != nil {
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if errors.Is(err, libcontainer.ErrNotExist) {
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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 e := os.RemoveAll(path); e != nil {
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fmt.Fprintf(os.Stderr, "remove %s: %v\n", path, e)
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}
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if force {
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return nil
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}
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}
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return err
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}
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s, err := container.Status()
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if err != nil {
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return err
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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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return killContainer(container)
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default:
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if force {
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return killContainer(container)
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}
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return fmt.Errorf("cannot delete container %s that is not stopped: %s", id, s)
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}
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return nil
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},
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}
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