package generate import ( "context" "os" "github.com/containers/common/pkg/config" "github.com/containers/libpod/libpod" "github.com/containers/libpod/libpod/define" "github.com/containers/libpod/libpod/image" "github.com/containers/libpod/pkg/specgen" "github.com/containers/storage" "github.com/pkg/errors" "github.com/sirupsen/logrus" ) // MakeContainer creates a container based on the SpecGenerator func MakeContainer(ctx context.Context, rt *libpod.Runtime, s *specgen.SpecGenerator) (*libpod.Container, error) { rtc, err := rt.GetConfig() if err != nil { return nil, err } // If joining a pod, retrieve the pod for use. var pod *libpod.Pod if s.Pod != "" { pod, err = rt.LookupPod(s.Pod) if err != nil { return nil, errors.Wrapf(err, "error retrieving pod %s", s.Pod) } } // Set defaults for unset namespaces if s.PidNS.IsDefault() { defaultNS, err := GetDefaultNamespaceMode("pid", rtc, pod) if err != nil { return nil, err } s.PidNS = defaultNS } if s.IpcNS.IsDefault() { defaultNS, err := GetDefaultNamespaceMode("ipc", rtc, pod) if err != nil { return nil, err } s.IpcNS = defaultNS } if s.UtsNS.IsDefault() { defaultNS, err := GetDefaultNamespaceMode("uts", rtc, pod) if err != nil { return nil, err } s.UtsNS = defaultNS } if s.UserNS.IsDefault() { defaultNS, err := GetDefaultNamespaceMode("user", rtc, pod) if err != nil { return nil, err } s.UserNS = defaultNS } if s.NetNS.IsDefault() { defaultNS, err := GetDefaultNamespaceMode("net", rtc, pod) if err != nil { return nil, err } s.NetNS = defaultNS } if s.CgroupNS.IsDefault() { defaultNS, err := GetDefaultNamespaceMode("cgroup", rtc, pod) if err != nil { return nil, err } s.CgroupNS = defaultNS } options := []libpod.CtrCreateOption{} options = append(options, libpod.WithCreateCommand()) var newImage *image.Image if s.Rootfs != "" { options = append(options, libpod.WithRootFS(s.Rootfs)) } else { newImage, err = rt.ImageRuntime().NewFromLocal(s.Image) if err != nil { return nil, err } imgName := s.Image names := newImage.Names() if len(names) > 0 { imgName = names[0] } options = append(options, libpod.WithRootFSFromImage(newImage.ID(), imgName, s.Image)) } if err := s.Validate(); err != nil { return nil, errors.Wrap(err, "invalid config provided") } finalMounts, finalVolumes, err := finalizeMounts(ctx, s, rt, rtc, newImage) if err != nil { return nil, err } opts, err := createContainerOptions(ctx, rt, s, pod, finalVolumes, newImage) if err != nil { return nil, err } options = append(options, opts...) podmanPath, err := os.Executable() if err != nil { return nil, err } // TODO: Enable syslog support - we'll need to put this in SpecGen. options = append(options, libpod.WithExitCommand(CreateExitCommandArgs(rt.StorageConfig(), rtc, podmanPath, false, s.Remove, false))) runtimeSpec, err := SpecGenToOCI(ctx, s, rt, rtc, newImage, finalMounts) if err != nil { return nil, err } return rt.NewContainer(ctx, runtimeSpec, options...) } func createContainerOptions(ctx context.Context, rt *libpod.Runtime, s *specgen.SpecGenerator, pod *libpod.Pod, volumes []*specgen.NamedVolume, img *image.Image) ([]libpod.CtrCreateOption, error) { var options []libpod.CtrCreateOption var err error if s.Stdin { options = append(options, libpod.WithStdin()) } if len(s.Systemd) > 0 { options = append(options, libpod.WithSystemd()) } if len(s.Name) > 0 { logrus.Debugf("setting container name %s", s.Name) options = append(options, libpod.WithName(s.Name)) } if pod != nil { logrus.Debugf("adding container to pod %s", pod.Name()) options = append(options, rt.WithPod(pod)) } destinations := []string{} // Take all mount and named volume destinations. for _, mount := range s.Mounts { destinations = append(destinations, mount.Destination) } for _, volume := range volumes { destinations = append(destinations, volume.Dest) } options = append(options, libpod.WithUserVolumes(destinations)) if len(volumes) != 0 { var vols []*libpod.ContainerNamedVolume for _, v := range volumes { vols = append(vols, &libpod.ContainerNamedVolume{ Name: v.Name, Dest: v.Dest, Options: v.Options, }) } options = append(options, libpod.WithNamedVolumes(vols)) } if s.Command != nil { options = append(options, libpod.WithCommand(s.Command)) } if s.Entrypoint != nil { options = append(options, libpod.WithEntrypoint(s.Entrypoint)) } if s.StopSignal != nil { options = append(options, libpod.WithStopSignal(*s.StopSignal)) } if s.StopTimeout != nil { options = append(options, libpod.WithStopTimeout(*s.StopTimeout)) } if s.LogConfiguration != nil { if len(s.LogConfiguration.Path) > 0 { options = append(options, libpod.WithLogPath(s.LogConfiguration.Path)) } if len(s.LogConfiguration.Options) > 0 && s.LogConfiguration.Options["tag"] != "" { // Note: I'm really guessing here. options = append(options, libpod.WithLogTag(s.LogConfiguration.Options["tag"])) } if len(s.LogConfiguration.Driver) > 0 { options = append(options, libpod.WithLogDriver(s.LogConfiguration.Driver)) } } // Security options if len(s.SelinuxOpts) > 0 { options = append(options, libpod.WithSecLabels(s.SelinuxOpts)) } options = append(options, libpod.WithPrivileged(s.Privileged)) // Get namespace related options namespaceOptions, err := GenerateNamespaceOptions(ctx, s, rt, pod, img) if err != nil { return nil, err } options = append(options, namespaceOptions...) if len(s.ConmonPidFile) > 0 { options = append(options, libpod.WithConmonPidFile(s.ConmonPidFile)) } options = append(options, libpod.WithLabels(s.Labels)) if s.ShmSize != nil { options = append(options, libpod.WithShmSize(*s.ShmSize)) } if s.Rootfs != "" { options = append(options, libpod.WithRootFS(s.Rootfs)) } // Default used if not overridden on command line if s.RestartPolicy != "" { if s.RestartPolicy == "unless-stopped" { return nil, errors.Wrapf(define.ErrInvalidArg, "the unless-stopped restart policy is not supported") } if s.RestartRetries != nil { options = append(options, libpod.WithRestartRetries(*s.RestartRetries)) } options = append(options, libpod.WithRestartPolicy(s.RestartPolicy)) } if s.ContainerHealthCheckConfig.HealthConfig != nil { options = append(options, libpod.WithHealthCheck(s.ContainerHealthCheckConfig.HealthConfig)) logrus.Debugf("New container has a health check") } return options, nil } func CreateExitCommandArgs(storageConfig storage.StoreOptions, config *config.Config, podmanPath string, syslog, rm bool, exec bool) []string { // We need a cleanup process for containers in the current model. // But we can't assume that the caller is Podman - it could be another // user of the API. // As such, provide a way to specify a path to Podman, so we can // still invoke a cleanup process. command := []string{podmanPath, "--root", storageConfig.GraphRoot, "--runroot", storageConfig.RunRoot, "--log-level", logrus.GetLevel().String(), "--cgroup-manager", config.Engine.CgroupManager, "--tmpdir", config.Engine.TmpDir, } if config.Engine.OCIRuntime != "" { command = append(command, []string{"--runtime", config.Engine.OCIRuntime}...) } if storageConfig.GraphDriverName != "" { command = append(command, []string{"--storage-driver", storageConfig.GraphDriverName}...) } for _, opt := range storageConfig.GraphDriverOptions { command = append(command, []string{"--storage-opt", opt}...) } if config.Engine.EventsLogger != "" { command = append(command, []string{"--events-backend", config.Engine.EventsLogger}...) } if syslog { command = append(command, "--syslog", "true") } command = append(command, []string{"container", "cleanup"}...) if rm { command = append(command, "--rm") } if exec { command = append(command, "--exec") } return command }