runc/pause.go

91 lines
2.2 KiB
Go

// +build linux
package main
import (
"fmt"
"os"
"github.com/urfave/cli"
)
var pauseCommand = cli.Command{
Name: "pause",
Usage: "pause suspends all processes inside the container",
ArgsUsage: `<container-id> [container-id...]
Where "<container-id>" is the name for the instance of the container to be
paused. `,
Description: `The pause command suspends all processes in the instance of the container.
Use runc list to identiy instances of containers and their current status.`,
Action: func(context *cli.Context) error {
if err := checkArgs(context, 1, minArgs); err != nil {
return err
}
hasError := false
factory, err := loadFactory(context)
if err != nil {
return err
}
for _, id := range context.Args() {
container, err := factory.Load(id)
if err != nil {
fmt.Fprintf(os.Stderr, "container %s does not exist\n", id)
hasError = true
continue
}
if err := container.Pause(); err != nil {
fmt.Fprintf(os.Stderr, "pause container %s : %s\n", id, err)
hasError = true
}
}
if hasError {
return fmt.Errorf("one or more of container pause failed")
}
return nil
},
}
var resumeCommand = cli.Command{
Name: "resume",
Usage: "resumes all processes that have been previously paused",
ArgsUsage: `<container-id> [container-id...]
Where "<container-id>" is the name for the instance of the container to be
resumed.`,
Description: `The resume command resumes all processes in the instance of the container.
Use runc list to identiy instances of containers and their current status.`,
Action: func(context *cli.Context) error {
if err := checkArgs(context, 1, minArgs); err != nil {
return err
}
hasError := false
factory, err := loadFactory(context)
if err != nil {
return err
}
for _, id := range context.Args() {
container, err := factory.Load(id)
if err != nil {
fmt.Fprintf(os.Stderr, "container %s does not exist\n", id)
hasError = true
continue
}
if err := container.Resume(); err != nil {
fmt.Fprintf(os.Stderr, "resume container %s : %s\n", id, err)
hasError = true
}
}
if hasError {
return fmt.Errorf("one or more of container resume failed")
}
return nil
},
}