func (srv *Server) ContainerStart(job *engine.Job) string {
if len(job.Args) < 1 {
return fmt.Sprintf("Usage: %s container_id", job.Name)
}
name := job.Args[0]
runtime := srv.runtime
container := runtime.Get(name)
if container == nil {
return fmt.Sprintf("No such container: %s", name)
}
// If no environment was set, then no hostconfig was passed.
if len(job.Environ()) > 0 {
var hostConfig HostConfig
if err := job.ExportEnv(&hostConfig); err != nil {
return err.Error()
}
// Validate the HostConfig binds. Make sure that:
// 1) the source of a bind mount isn't /
// The bind mount "/:/foo" isn't allowed.
// 2) Check that the source exists
// The source to be bind mounted must exist.
for _, bind := range hostConfig.Binds {
splitBind := strings.Split(bind, ":")
source := splitBind[0]
// refuse to bind mount "/" to the container
if source == "/" {
return fmt.Sprintf("Invalid bind mount '%s' : source can't be '/'", bind)
}
// ensure the source exists on the host
_, err := os.Stat(source)
if err != nil && os.IsNotExist(err) {
return fmt.Sprintf("Invalid bind mount '%s' : source doesn't exist", bind)
}
}
// Register any links from the host config before starting the container
// FIXME: we could just pass the container here, no need to lookup by name again.
if err := srv.RegisterLinks(name, &hostConfig); err != nil {
return err.Error()
}
container.hostConfig = &hostConfig
container.ToDisk()
}
if err := container.Start(); err != nil {
return fmt.Sprintf("Cannot start container %s: %s", name, err)
}
srv.LogEvent("start", container.ID, runtime.repositories.ImageName(container.Image))
return "0"
}