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moby--moby/daemon/delete.go

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package daemon
import (
"fmt"
"os"
"path"
log "github.com/Sirupsen/logrus"
"github.com/docker/docker/engine"
)
func (daemon *Daemon) ContainerRm(job *engine.Job) engine.Status {
if len(job.Args) != 1 {
return job.Errorf("Not enough arguments. Usage: %s CONTAINER\n", job.Name)
}
name := job.Args[0]
removeVolume := job.GetenvBool("removeVolume")
removeLink := job.GetenvBool("removeLink")
forceRemove := job.GetenvBool("forceRemove")
container := daemon.Get(name)
if container == nil {
return job.Errorf("No such container: %s", name)
}
if removeLink {
name, err := GetFullContainerName(name)
if err != nil {
job.Error(err)
}
parent, n := path.Split(name)
if parent == "/" {
return job.Errorf("Conflict, cannot remove the default name of the container")
}
pe := daemon.ContainerGraph().Get(parent)
if pe == nil {
return job.Errorf("Cannot get parent %s for name %s", parent, name)
}
parentContainer := daemon.Get(pe.ID())
if parentContainer != nil {
parentContainer.DisableLink(n)
}
if err := daemon.ContainerGraph().Delete(name); err != nil {
return job.Error(err)
}
return engine.StatusOK
}
if container != nil {
if container.IsRunning() {
if forceRemove {
if err := container.Kill(); err != nil {
return job.Errorf("Could not kill running container, cannot remove - %v", err)
}
} else {
return job.Errorf("You cannot remove a running container. Stop the container before attempting removal or use -f")
}
}
if err := daemon.Destroy(container); err != nil {
return job.Errorf("Cannot destroy container %s: %s", name, err)
}
container.LogEvent("destroy")
if removeVolume {
daemon.DeleteVolumes(container.VolumePaths())
}
}
return engine.StatusOK
}
func (daemon *Daemon) DeleteVolumes(volumeIDs map[string]struct{}) {
for id := range volumeIDs {
if err := daemon.volumes.Delete(id); err != nil {
log.Infof("%s", err)
continue
}
}
}
// Destroy unregisters a container from the daemon and cleanly removes its contents from the filesystem.
// FIXME: rename to Rm for consistency with the CLI command
func (daemon *Daemon) Destroy(container *Container) error {
if container == nil {
return fmt.Errorf("The given container is <nil>")
}
element := daemon.containers.Get(container.ID)
if element == nil {
return fmt.Errorf("Container %v not found - maybe it was already destroyed?", container.ID)
}
if err := container.Stop(3); err != nil {
return err
}
// Deregister the container before removing its directory, to avoid race conditions
daemon.idIndex.Delete(container.ID)
daemon.containers.Delete(container.ID)
container.derefVolumes()
if _, err := daemon.containerGraph.Purge(container.ID); err != nil {
log.Debugf("Unable to remove container from link graph: %s", err)
}
if err := daemon.driver.Remove(container.ID); err != nil {
return fmt.Errorf("Driver %s failed to remove root filesystem %s: %s", daemon.driver, container.ID, err)
}
initID := fmt.Sprintf("%s-init", container.ID)
if err := daemon.driver.Remove(initID); err != nil {
return fmt.Errorf("Driver %s failed to remove init filesystem %s: %s", daemon.driver, initID, err)
}
if err := os.RemoveAll(container.root); err != nil {
return fmt.Errorf("Unable to remove filesystem for %v: %v", container.ID, err)
}
if err := daemon.execDriver.Clean(container.ID); err != nil {
return fmt.Errorf("Unable to remove execdriver data for %s: %s", container.ID, err)
}
selinuxFreeLxcContexts(container.ProcessLabel)
return nil
}