81 lines
2.1 KiB
Go
81 lines
2.1 KiB
Go
package daemon
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import (
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"fmt"
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"os"
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"strings"
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"github.com/docker/docker/engine"
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"github.com/docker/docker/runconfig"
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)
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func (daemon *Daemon) ContainerStart(job *engine.Job) engine.Status {
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if len(job.Args) < 1 {
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return job.Errorf("Usage: %s container_id", job.Name)
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}
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var (
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name = job.Args[0]
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container = daemon.Get(name)
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)
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if container == nil {
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return job.Errorf("No such container: %s", name)
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}
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if container.IsPaused() {
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return job.Errorf("Cannot start a paused container, try unpause instead.")
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}
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if container.IsRunning() {
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return job.Errorf("Container already started")
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}
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// If no environment was set, then no hostconfig was passed.
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// This is kept for backward compatibility - hostconfig should be passed when
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// creating a container, not during start.
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if len(job.Environ()) > 0 {
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hostConfig := runconfig.ContainerHostConfigFromJob(job)
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if err := daemon.setHostConfig(container, hostConfig); err != nil {
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return job.Error(err)
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}
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}
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if err := container.Start(); err != nil {
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container.LogEvent("die")
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return job.Errorf("Cannot start container %s: %s", name, err)
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}
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return engine.StatusOK
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}
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func (daemon *Daemon) setHostConfig(container *Container, hostConfig *runconfig.HostConfig) error {
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container.Lock()
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defer container.Unlock()
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if err := parseSecurityOpt(container, hostConfig); err != nil {
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return err
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}
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// FIXME: this should be handled by the volume subsystem
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// Validate the HostConfig binds. Make sure that:
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// the source exists
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for _, bind := range hostConfig.Binds {
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splitBind := strings.Split(bind, ":")
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source := splitBind[0]
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// ensure the source exists on the host
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_, err := os.Stat(source)
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if err != nil && os.IsNotExist(err) {
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err = os.MkdirAll(source, 0755)
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if err != nil {
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return fmt.Errorf("Could not create local directory '%s' for bind mount: %s!", source, err.Error())
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}
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}
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}
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// Register any links from the host config before starting the container
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if err := daemon.RegisterLinks(container, hostConfig); err != nil {
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return err
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}
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container.hostConfig = hostConfig
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container.toDisk()
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return nil
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}
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