Add --all flag to podman kill

Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>

cmd/podman/kill.go

@@ -6,6 +6,7 @@ import (
 
 	"fmt"
 	"github.com/containers/libpod/cmd/podman/libpodruntime"
+	"github.com/containers/libpod/libpod"
 	"github.com/containers/libpod/pkg/rootless"
 	"github.com/docker/docker/pkg/signal"
 	"github.com/pkg/errors"
@@ -14,6 +15,10 @@ import (
 
 var (
 	killFlags = []cli.Flag{
+		cli.BoolFlag{
+			Name:  "all, a",
+			Usage: "Signal all running containers",
+		},
 		cli.StringFlag{
 			Name:  "signal, s",
 			Usage: "Signal to send to the container",
@@ -28,7 +33,7 @@ var (
 		Description:            killDescription,
 		Flags:                  killFlags,
 		Action:                 killCmd,
-		ArgsUsage:              "[CONTAINER_NAME_OR_ID]",
+		ArgsUsage:              "CONTAINER-NAME [CONTAINER-NAME ...]",
 		UseShortOptionHandling: true,
 		OnUsageError:           usageErrorHandler,
 	}
@@ -37,11 +42,17 @@ var (
 // killCmd kills one or more containers with a signal
 func killCmd(c *cli.Context) error {
 	args := c.Args()
-	if len(args) == 0 && !c.Bool("latest") {
+	if (!c.Bool("all") && !c.Bool("latest")) && len(args) == 0 {
-		return errors.Errorf("specify one or more containers to kill")
+		return errors.Errorf("you must specify one or more containers to kill")
 	}
-	if len(args) > 0 && c.Bool("latest") {
+	if (c.Bool("all") || c.Bool("latest")) && len(args) > 0 {
-		return errors.Errorf("you cannot specific any containers to kill with --latest")
+		return errors.Errorf("you cannot specify any containers to kill with --latest or --all")
+	}
+	if c.Bool("all") && c.Bool("latest") {
+		return errors.Errorf("--all and --latest cannot be used together")
+	}
+	if len(args) < 1 && !c.Bool("all") && !c.Bool("latest") {
+		return errors.Errorf("you must provide at least one container name or id")
 	}
 	if err := validateFlags(c, killFlags); err != nil {
 		return err
@@ -65,30 +76,45 @@ func killCmd(c *cli.Context) error {
 		killSignal = uint(sysSignal)
 	}
 
-	if c.Bool("latest") {
+	var filterFuncs []libpod.ContainerFilter
-		latestCtr, err := runtime.GetLatestContainer()
+	var containers []*libpod.Container
-		if err != nil {
-			return errors.Wrapf(err, "unable to get latest container")
-		}
-		args = append(args, latestCtr.ID())
-	}
-
 	var lastError error
-	for _, container := range args {
+	if c.Bool("all") {
-		ctr, err := runtime.LookupContainer(container)
+		// only get running containers
+		filterFuncs = append(filterFuncs, func(c *libpod.Container) bool {
+			state, _ := c.State()
+			return state == libpod.ContainerStateRunning
+		})
+		containers, err = runtime.GetContainers(filterFuncs...)
+		if err != nil {
+			return errors.Wrapf(err, "unable to get running containers")
+		}
+	} else if c.Bool("latest") {
+		lastCtr, err := runtime.GetLatestContainer()
+		if err != nil {
+			return errors.Wrapf(err, "unable to get last created container")
+		}
+		containers = append(containers, lastCtr)
+	} else {
+		for _, i := range args {
+			container, err := runtime.LookupContainer(i)
 			if err != nil {
 				if lastError != nil {
 					fmt.Fprintln(os.Stderr, lastError)
 				}
-			lastError = errors.Wrapf(err, "unable to find container %v", container)
+				lastError = errors.Wrapf(err, "unable to find container %s", i)
 				continue
 			}
+			containers = append(containers, container)
+		}
+	}
 
+	for _, ctr := range containers {
 		if err := ctr.Kill(killSignal); err != nil {
 			if lastError != nil {
 				fmt.Fprintln(os.Stderr, lastError)
 			}
-			lastError = errors.Wrapf(err, "unable to find container %v", container)
+			lastError = errors.Wrapf(err, "unable to find container %v", ctr.ID())
 		} else {
 			fmt.Println(ctr.ID())
 		}

completions/bash/podman

@@ -1282,6 +1282,8 @@ _podman_kill() {
      --signal -s
      "
      local boolean_options="
+     --all
+     -a
      --help
      -h
      --latest

docs/podman-kill.1.md

@@ -10,6 +10,10 @@ podman\-kill - Kills one or more containers with a signal
 The main process inside each container specified will be sent SIGKILL, or any signal specified with option --signal.
 
 ## OPTIONS
+**--all, -a**
+
+Signal all running containers.  This does not include paused containers.
+
 **--latest, -l**
 
 Instead of providing the container name or ID, use the last created container. If you use methods other than Podman
@@ -30,6 +34,8 @@ podman kill --signal TERM 860a4b23
 
 podman kill --latest
 
+podman kill --signal KILL -a
+
 ## SEE ALSO
 podman(1), podman-stop(1)
 

docs/podman-stop.1.md

@@ -15,10 +15,6 @@ container and also via command line when creating the container.
 
 ## OPTIONS
 
-**--timeout, --time, t**
-
-Timeout to wait before forcibly stopping the container
-
 **--all, -a**
 
 Stop all running containers.  This does not include paused containers.
@@ -28,6 +24,10 @@ Stop all running containers.  This does not include paused containers.
 Instead of providing the container name or ID, use the last created container. If you use methods other than Podman
 to run containers such as CRI-O, the last started container could be from either of those methods.
 
+**--timeout, --time, t**
+
+Timeout to wait before forcibly stopping the container
+
 ## EXAMPLE
 
 podman stop mywebserver