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package main
import (
"fmt"
"syscall"
"github.com/containers/libpod/cmd/podman/cliconfig"
"github.com/containers/libpod/cmd/podman/libpodruntime"
"github.com/containers/libpod/cmd/podman/shared"
"github.com/containers/libpod/libpod"
"github.com/containers/libpod/pkg/rootless"
"github.com/docker/docker/pkg/signal"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
"github.com/spf13/cobra"
)
var (
killCommand cliconfig.KillValues
killDescription = "The main process inside each container specified will be sent SIGKILL, or any signal specified with option --signal."
_killCommand = &cobra.Command{
Use: "kill",
Short: "Kill one or more running containers with a specific signal",
Long: killDescription,
RunE: func(cmd *cobra.Command, args []string) error {
killCommand.InputArgs = args
killCommand.GlobalFlags = MainGlobalOpts
return killCmd(&killCommand)
},
Example: "CONTAINER-NAME [CONTAINER-NAME ...]",
}
)
func init() {
killCommand.Command = _killCommand
killCommand.SetUsageTemplate(UsageTemplate())
flags := killCommand.Flags()
flags.BoolVarP(&killCommand.All, "all", "a", false, "Signal all running containers")
flags.StringVarP(&killCommand.Signal, "signal", "s", "KILL", "Signal to send to the container")
flags.BoolVarP(&killCommand.Latest, "latest", "l", false, "Act on the latest container podman is aware of")
}
// killCmd kills one or more containers with a signal
func killCmd(c *cliconfig.KillValues) error {
var (
killFuncs []shared.ParallelWorkerInput
killSignal uint = uint(syscall.SIGTERM)
)
if err := checkAllAndLatest(&c.PodmanCommand); err != nil {
return err
}
rootless.SetSkipStorageSetup(true)
runtime, err := libpodruntime.GetRuntime(&c.PodmanCommand)
if err != nil {
return errors.Wrapf(err, "could not get runtime")
}
defer runtime.Shutdown(false)
if c.Signal != "" {
// Check if the signalString provided by the user is valid
// Invalid signals will return err
sysSignal, err := signal.ParseSignal(c.Signal)
if err != nil {
return err
}
killSignal = uint(sysSignal)
}
containers, err := getAllOrLatestContainers(&c.PodmanCommand, runtime, libpod.ContainerStateRunning, "running")
if err != nil {
if len(containers) == 0 {
return err
}
fmt.Println(err.Error())
}
for _, ctr := range containers {
con := ctr
f := func() error {
return con.Kill(killSignal)
}
killFuncs = append(killFuncs, shared.ParallelWorkerInput{
ContainerID: con.ID(),
ParallelFunc: f,
})
}
maxWorkers := shared.Parallelize("kill")
if c.GlobalIsSet("max-workers") {
maxWorkers = c.GlobalFlags.MaxWorks
}
logrus.Debugf("Setting maximum workers to %d", maxWorkers)
killErrors, errCount := shared.ParallelExecuteWorkerPool(maxWorkers, killFuncs)
return printParallelOutput(killErrors, errCount)
}
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