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|
package containers
import (
"context"
"errors"
"fmt"
"io/ioutil"
"strings"
"github.com/containers/common/pkg/completion"
"github.com/containers/podman/v4/cmd/podman/common"
"github.com/containers/podman/v4/cmd/podman/registry"
"github.com/containers/podman/v4/cmd/podman/utils"
"github.com/containers/podman/v4/cmd/podman/validate"
"github.com/containers/podman/v4/pkg/domain/entities"
"github.com/containers/podman/v4/pkg/signal"
"github.com/spf13/cobra"
)
var (
killDescription = "The main process inside each container specified will be sent SIGKILL, or any signal specified with option --signal."
killCommand = &cobra.Command{
Use: "kill [options] CONTAINER [CONTAINER...]",
Short: "Kill one or more running containers with a specific signal",
Long: killDescription,
RunE: kill,
Args: func(cmd *cobra.Command, args []string) error {
return validate.CheckAllLatestAndIDFile(cmd, args, false, "cidfile")
},
ValidArgsFunction: common.AutocompleteContainersRunning,
Example: `podman kill mywebserver
podman kill 860a4b23
podman kill --signal TERM ctrID`,
}
containerKillCommand = &cobra.Command{
Args: func(cmd *cobra.Command, args []string) error {
return validate.CheckAllLatestAndIDFile(cmd, args, false, "cidfile")
},
Use: killCommand.Use,
Short: killCommand.Short,
Long: killCommand.Long,
RunE: killCommand.RunE,
ValidArgsFunction: killCommand.ValidArgsFunction,
Example: `podman container kill mywebserver
podman container kill 860a4b23
podman container kill --signal TERM ctrID`,
}
)
var (
killOptions = entities.KillOptions{}
killCidFiles = []string{}
)
func killFlags(cmd *cobra.Command) {
flags := cmd.Flags()
flags.BoolVarP(&killOptions.All, "all", "a", false, "Signal all running containers")
signalFlagName := "signal"
flags.StringVarP(&killOptions.Signal, signalFlagName, "s", "KILL", "Signal to send to the container")
_ = cmd.RegisterFlagCompletionFunc(signalFlagName, common.AutocompleteStopSignal)
cidfileFlagName := "cidfile"
flags.StringArrayVar(&killCidFiles, cidfileFlagName, nil, "Read the container ID from the file")
_ = cmd.RegisterFlagCompletionFunc(cidfileFlagName, completion.AutocompleteDefault)
}
func init() {
registry.Commands = append(registry.Commands, registry.CliCommand{
Command: killCommand,
})
killFlags(killCommand)
validate.AddLatestFlag(killCommand, &killOptions.Latest)
registry.Commands = append(registry.Commands, registry.CliCommand{
Command: containerKillCommand,
Parent: containerCmd,
})
killFlags(containerKillCommand)
validate.AddLatestFlag(containerKillCommand, &killOptions.Latest)
}
func kill(_ *cobra.Command, args []string) error {
var (
err error
errs utils.OutputErrors
)
// Check if the signalString provided by the user is valid
// Invalid signals will return err
sig, err := signal.ParseSignalNameOrNumber(killOptions.Signal)
if err != nil {
return err
}
if sig < 1 || sig > 64 {
return errors.New("valid signals are 1 through 64")
}
for _, cidFile := range killCidFiles {
content, err := ioutil.ReadFile(cidFile)
if err != nil {
return fmt.Errorf("error reading CIDFile: %w", err)
}
id := strings.Split(string(content), "\n")[0]
args = append(args, id)
}
responses, err := registry.ContainerEngine().ContainerKill(context.Background(), args, killOptions)
if err != nil {
return err
}
for _, r := range responses {
switch {
case r.Err != nil:
errs = append(errs, r.Err)
case r.RawInput != "":
fmt.Println(r.RawInput)
default:
fmt.Println(r.Id)
}
}
return errs.PrintErrors()
}
|
