package abi import ( "context" "fmt" "io/ioutil" "os" "strconv" "sync" "time" "github.com/containers/buildah" "github.com/containers/common/pkg/config" "github.com/containers/image/v5/manifest" "github.com/containers/podman/v3/libpod" "github.com/containers/podman/v3/libpod/define" "github.com/containers/podman/v3/libpod/events" "github.com/containers/podman/v3/libpod/logs" "github.com/containers/podman/v3/pkg/cgroups" "github.com/containers/podman/v3/pkg/checkpoint" "github.com/containers/podman/v3/pkg/domain/entities" "github.com/containers/podman/v3/pkg/domain/entities/reports" dfilters "github.com/containers/podman/v3/pkg/domain/filters" "github.com/containers/podman/v3/pkg/domain/infra/abi/terminal" "github.com/containers/podman/v3/pkg/errorhandling" parallelctr "github.com/containers/podman/v3/pkg/parallel/ctr" "github.com/containers/podman/v3/pkg/ps" "github.com/containers/podman/v3/pkg/rootless" "github.com/containers/podman/v3/pkg/signal" "github.com/containers/podman/v3/pkg/specgen" "github.com/containers/podman/v3/pkg/specgen/generate" "github.com/containers/podman/v3/pkg/util" "github.com/containers/storage" "github.com/pkg/errors" "github.com/sirupsen/logrus" ) // getContainersAndInputByContext gets containers whether all, latest, or a slice of names/ids // is specified. It also returns a list of the corresponding input name used to lookup each container. func getContainersAndInputByContext(all, latest bool, names []string, runtime *libpod.Runtime) (ctrs []*libpod.Container, rawInput []string, err error) { var ctr *libpod.Container ctrs = []*libpod.Container{} switch { case all: ctrs, err = runtime.GetAllContainers() case latest: ctr, err = runtime.GetLatestContainer() if err == nil { rawInput = append(rawInput, ctr.ID()) ctrs = append(ctrs, ctr) } default: for _, n := range names { ctr, e := runtime.LookupContainer(n) if e != nil { // Log all errors here, so callers don't need to. logrus.Debugf("Error looking up container %q: %v", n, e) if err == nil { err = e } } else { rawInput = append(rawInput, n) ctrs = append(ctrs, ctr) } } } return } // getContainersByContext gets containers whether all, latest, or a slice of names/ids // is specified. func getContainersByContext(all, latest bool, names []string, runtime *libpod.Runtime) (ctrs []*libpod.Container, err error) { ctrs, _, err = getContainersAndInputByContext(all, latest, names, runtime) return } // ContainerExists returns whether the container exists in container storage func (ic *ContainerEngine) ContainerExists(ctx context.Context, nameOrID string, options entities.ContainerExistsOptions) (*entities.BoolReport, error) { _, err := ic.Libpod.LookupContainer(nameOrID) if err != nil { if errors.Cause(err) != define.ErrNoSuchCtr { return nil, err } if options.External { // Check if container exists in storage if _, storageErr := ic.Libpod.StorageContainer(nameOrID); storageErr == nil { err = nil } } } return &entities.BoolReport{Value: err == nil}, nil } func (ic *ContainerEngine) ContainerWait(ctx context.Context, namesOrIds []string, options entities.WaitOptions) ([]entities.WaitReport, error) { ctrs, err := getContainersByContext(false, options.Latest, namesOrIds, ic.Libpod) if err != nil { return nil, err } responses := make([]entities.WaitReport, 0, len(ctrs)) for _, c := range ctrs { response := entities.WaitReport{Id: c.ID()} exitCode, err := c.WaitForConditionWithInterval(ctx, options.Interval, options.Condition...) if err != nil { response.Error = err } else { response.ExitCode = exitCode } responses = append(responses, response) } return responses, nil } func (ic *ContainerEngine) ContainerPause(ctx context.Context, namesOrIds []string, options entities.PauseUnPauseOptions) ([]*entities.PauseUnpauseReport, error) { ctrs, err := getContainersByContext(options.All, false, namesOrIds, ic.Libpod) if err != nil { return nil, err } report := make([]*entities.PauseUnpauseReport, 0, len(ctrs)) for _, c := range ctrs { err := c.Pause() report = append(report, &entities.PauseUnpauseReport{Id: c.ID(), Err: err}) } return report, nil } func (ic *ContainerEngine) ContainerUnpause(ctx context.Context, namesOrIds []string, options entities.PauseUnPauseOptions) ([]*entities.PauseUnpauseReport, error) { ctrs, err := getContainersByContext(options.All, false, namesOrIds, ic.Libpod) if err != nil { return nil, err } report := make([]*entities.PauseUnpauseReport, 0, len(ctrs)) for _, c := range ctrs { err := c.Unpause() report = append(report, &entities.PauseUnpauseReport{Id: c.ID(), Err: err}) } return report, nil } func (ic *ContainerEngine) ContainerStop(ctx context.Context, namesOrIds []string, options entities.StopOptions) ([]*entities.StopReport, error) { names := namesOrIds ctrs, rawInputs, err := getContainersAndInputByContext(options.All, options.Latest, names, ic.Libpod) if err != nil && !(options.Ignore && errors.Cause(err) == define.ErrNoSuchCtr) { return nil, err } ctrMap := map[string]string{} if len(rawInputs) == len(ctrs) { for i := range ctrs { ctrMap[ctrs[i].ID()] = rawInputs[i] } } errMap, err := parallelctr.ContainerOp(ctx, ctrs, func(c *libpod.Container) error { var err error if options.Timeout != nil { err = c.StopWithTimeout(*options.Timeout) } else { err = c.Stop() } if err != nil { switch { case errors.Cause(err) == define.ErrCtrStopped: logrus.Debugf("Container %s is already stopped", c.ID()) case options.All && errors.Cause(err) == define.ErrCtrStateInvalid: logrus.Debugf("Container %s is not running, could not stop", c.ID()) default: return err } } if c.AutoRemove() { // Issue #7384: if the container is configured for // auto-removal, it might already have been removed at // this point. return nil } return c.Cleanup(ctx) }) if err != nil { return nil, err } reports := make([]*entities.StopReport, 0, len(errMap)) for ctr, err := range errMap { report := new(entities.StopReport) report.Id = ctr.ID() if options.All { report.RawInput = ctr.ID() } else { report.RawInput = ctrMap[ctr.ID()] } report.Err = err reports = append(reports, report) } return reports, nil } func (ic *ContainerEngine) ContainerPrune(ctx context.Context, options entities.ContainerPruneOptions) ([]*reports.PruneReport, error) { filterFuncs := make([]libpod.ContainerFilter, 0, len(options.Filters)) for k, v := range options.Filters { generatedFunc, err := dfilters.GeneratePruneContainerFilterFuncs(k, v, ic.Libpod) if err != nil { return nil, err } filterFuncs = append(filterFuncs, generatedFunc) } return ic.Libpod.PruneContainers(filterFuncs) } func (ic *ContainerEngine) ContainerKill(ctx context.Context, namesOrIds []string, options entities.KillOptions) ([]*entities.KillReport, error) { sig, err := signal.ParseSignalNameOrNumber(options.Signal) if err != nil { return nil, err } ctrs, rawInputs, err := getContainersAndInputByContext(options.All, options.Latest, namesOrIds, ic.Libpod) if err != nil { return nil, err } ctrMap := map[string]string{} if len(rawInputs) == len(ctrs) { for i := range ctrs { ctrMap[ctrs[i].ID()] = rawInputs[i] } } reports := make([]*entities.KillReport, 0, len(ctrs)) for _, con := range ctrs { reports = append(reports, &entities.KillReport{ Id: con.ID(), Err: con.Kill(uint(sig)), RawInput: ctrMap[con.ID()], }) } return reports, nil } func (ic *ContainerEngine) ContainerRestart(ctx context.Context, namesOrIds []string, options entities.RestartOptions) ([]*entities.RestartReport, error) { var ( ctrs []*libpod.Container err error ) if options.Running { ctrs, err = ic.Libpod.GetRunningContainers() if err != nil { return nil, err } } else { ctrs, err = getContainersByContext(options.All, options.Latest, namesOrIds, ic.Libpod) if err != nil { return nil, err } } reports := make([]*entities.RestartReport, 0, len(ctrs)) for _, con := range ctrs { timeout := con.StopTimeout() if options.Timeout != nil { timeout = *options.Timeout } reports = append(reports, &entities.RestartReport{ Id: con.ID(), Err: con.RestartWithTimeout(ctx, timeout), }) } return reports, nil } func (ic *ContainerEngine) ContainerRm(ctx context.Context, namesOrIds []string, options entities.RmOptions) ([]*entities.RmReport, error) { reports := []*entities.RmReport{} names := namesOrIds // Attempt to remove named containers directly from storage, if container is defined in libpod // this will fail and code will fall through to removing the container from libpod.` tmpNames := []string{} for _, ctr := range names { report := entities.RmReport{Id: ctr} report.Err = ic.Libpod.RemoveStorageContainer(ctr, options.Force) switch errors.Cause(report.Err) { case nil: // remove container names that we successfully deleted reports = append(reports, &report) case define.ErrNoSuchCtr: // There is still a potential this is a libpod container tmpNames = append(tmpNames, ctr) default: if _, err := ic.Libpod.LookupContainer(ctr); errors.Cause(err) == define.ErrNoSuchCtr { // remove container failed, but not a libpod container reports = append(reports, &report) continue } // attempt to remove as a libpod container tmpNames = append(tmpNames, ctr) } } names = tmpNames ctrs, err := getContainersByContext(options.All, options.Latest, names, ic.Libpod) if err != nil && !(options.Ignore && errors.Cause(err) == define.ErrNoSuchCtr) { // Failed to get containers. If force is specified, get the containers ID // and evict them if !options.Force { return nil, err } for _, ctr := range names { logrus.Debugf("Evicting container %q", ctr) report := entities.RmReport{Id: ctr} _, err := ic.Libpod.EvictContainer(ctx, ctr, options.Volumes) if err != nil { if options.Ignore && errors.Cause(err) == define.ErrNoSuchCtr { logrus.Debugf("Ignoring error (--allow-missing): %v", err) reports = append(reports, &report) continue } report.Err = err reports = append(reports, &report) continue } reports = append(reports, &report) } return reports, nil } errMap, err := parallelctr.ContainerOp(ctx, ctrs, func(c *libpod.Container) error { err := ic.Libpod.RemoveContainer(ctx, c, options.Force, options.Volumes) if err == nil { return nil } logrus.Debugf("Failed to remove container %s: %s", c.ID(), err.Error()) switch errors.Cause(err) { case define.ErrNoSuchCtr: if options.Ignore { logrus.Debugf("Ignoring error (--allow-missing): %v", err) return nil } case define.ErrCtrRemoved: return nil } return err }) if err != nil { return nil, err } for ctr, err := range errMap { report := new(entities.RmReport) report.Id = ctr.ID() report.Err = err reports = append(reports, report) } return reports, nil } func (ic *ContainerEngine) ContainerInspect(ctx context.Context, namesOrIds []string, options entities.InspectOptions) ([]*entities.ContainerInspectReport, []error, error) { if options.Latest { ctr, err := ic.Libpod.GetLatestContainer() if err != nil { if errors.Cause(err) == define.ErrNoSuchCtr { return nil, []error{errors.Wrapf(err, "no containers to inspect")}, nil } return nil, nil, err } inspect, err := ctr.Inspect(options.Size) if err != nil { return nil, nil, err } return []*entities.ContainerInspectReport{ { InspectContainerData: inspect, }, }, nil, nil } var ( reports = make([]*entities.ContainerInspectReport, 0, len(namesOrIds)) errs = []error{} ) for _, name := range namesOrIds { ctr, err := ic.Libpod.LookupContainer(name) if err != nil { // ErrNoSuchCtr is non-fatal, other errors will be // treated as fatal. if errors.Cause(err) == define.ErrNoSuchCtr { errs = append(errs, errors.Errorf("no such container %s", name)) continue } return nil, nil, err } inspect, err := ctr.Inspect(options.Size) if err != nil { return nil, nil, err } reports = append(reports, &entities.ContainerInspectReport{InspectContainerData: inspect}) } return reports, errs, nil } func (ic *ContainerEngine) ContainerTop(ctx context.Context, options entities.TopOptions) (*entities.StringSliceReport, error) { var ( container *libpod.Container err error ) // Look up the container. if options.Latest { container, err = ic.Libpod.GetLatestContainer() } else { container, err = ic.Libpod.LookupContainer(options.NameOrID) } if err != nil { return nil, errors.Wrap(err, "unable to lookup requested container") } // Run Top. report := &entities.StringSliceReport{} report.Value, err = container.Top(options.Descriptors) return report, err } func (ic *ContainerEngine) ContainerCommit(ctx context.Context, nameOrID string, options entities.CommitOptions) (*entities.CommitReport, error) { var ( mimeType string ) ctr, err := ic.Libpod.LookupContainer(nameOrID) if err != nil { return nil, err } rtc, err := ic.Libpod.GetConfig() if err != nil { return nil, err } switch options.Format { case "oci": mimeType = buildah.OCIv1ImageManifest if len(options.Message) > 0 { return nil, errors.Errorf("messages are only compatible with the docker image format (-f docker)") } case "docker": mimeType = manifest.DockerV2Schema2MediaType default: return nil, errors.Errorf("unrecognized image format %q", options.Format) } sc := ic.Libpod.SystemContext() coptions := buildah.CommitOptions{ SignaturePolicyPath: rtc.Engine.SignaturePolicyPath, ReportWriter: options.Writer, SystemContext: sc, PreferredManifestType: mimeType, } opts := libpod.ContainerCommitOptions{ CommitOptions: coptions, Pause: options.Pause, IncludeVolumes: options.IncludeVolumes, Message: options.Message, Changes: options.Changes, Author: options.Author, } newImage, err := ctr.Commit(ctx, options.ImageName, opts) if err != nil { return nil, err } return &entities.CommitReport{Id: newImage.ID()}, nil } func (ic *ContainerEngine) ContainerExport(ctx context.Context, nameOrID string, options entities.ContainerExportOptions) error { ctr, err := ic.Libpod.LookupContainer(nameOrID) if err != nil { return err } return ctr.Export(options.Output) } func (ic *ContainerEngine) ContainerCheckpoint(ctx context.Context, namesOrIds []string, options entities.CheckpointOptions) ([]*entities.CheckpointReport, error) { var ( err error cons []*libpod.Container ) checkOpts := libpod.ContainerCheckpointOptions{ Keep: options.Keep, TCPEstablished: options.TCPEstablished, TargetFile: options.Export, IgnoreRootfs: options.IgnoreRootFS, IgnoreVolumes: options.IgnoreVolumes, KeepRunning: options.LeaveRunning, PreCheckPoint: options.PreCheckPoint, WithPrevious: options.WithPrevious, } if options.All { running := func(c *libpod.Container) bool { state, _ := c.State() return state == define.ContainerStateRunning } cons, err = ic.Libpod.GetContainers(running) } else { cons, err = getContainersByContext(false, options.Latest, namesOrIds, ic.Libpod) } if err != nil { return nil, err } reports := make([]*entities.CheckpointReport, 0, len(cons)) for _, con := range cons { err = con.Checkpoint(ctx, checkOpts) reports = append(reports, &entities.CheckpointReport{ Err: err, Id: con.ID(), }) } return reports, nil } func (ic *ContainerEngine) ContainerRestore(ctx context.Context, namesOrIds []string, options entities.RestoreOptions) ([]*entities.RestoreReport, error) { var ( cons []*libpod.Container err error ) restoreOptions := libpod.ContainerCheckpointOptions{ Keep: options.Keep, TCPEstablished: options.TCPEstablished, TargetFile: options.Import, Name: options.Name, IgnoreRootfs: options.IgnoreRootFS, IgnoreVolumes: options.IgnoreVolumes, IgnoreStaticIP: options.IgnoreStaticIP, IgnoreStaticMAC: options.IgnoreStaticMAC, ImportPrevious: options.ImportPrevious, } filterFuncs := []libpod.ContainerFilter{ func(c *libpod.Container) bool { state, _ := c.State() return state == define.ContainerStateExited }, } switch { case options.Import != "": cons, err = checkpoint.CRImportCheckpoint(ctx, ic.Libpod, options) case options.All: cons, err = ic.Libpod.GetContainers(filterFuncs...) default: cons, err = getContainersByContext(false, options.Latest, namesOrIds, ic.Libpod) } if err != nil { return nil, err } reports := make([]*entities.RestoreReport, 0, len(cons)) for _, con := range cons { err := con.Restore(ctx, restoreOptions) reports = append(reports, &entities.RestoreReport{ Err: err, Id: con.ID(), }) } return reports, nil } func (ic *ContainerEngine) ContainerCreate(ctx context.Context, s *specgen.SpecGenerator) (*entities.ContainerCreateReport, error) { warn, err := generate.CompleteSpec(ctx, ic.Libpod, s) if err != nil { return nil, err } // Print warnings for _, w := range warn { fmt.Fprintf(os.Stderr, "%s\n", w) } ctr, err := generate.MakeContainer(ctx, ic.Libpod, s) if err != nil { return nil, err } return &entities.ContainerCreateReport{Id: ctr.ID()}, nil } func (ic *ContainerEngine) ContainerAttach(ctx context.Context, nameOrID string, options entities.AttachOptions) error { ctrs, err := getContainersByContext(false, options.Latest, []string{nameOrID}, ic.Libpod) if err != nil { return err } ctr := ctrs[0] conState, err := ctr.State() if err != nil { return errors.Wrapf(err, "unable to determine state of %s", ctr.ID()) } if conState != define.ContainerStateRunning { return errors.Errorf("you can only attach to running containers") } // If the container is in a pod, also set to recursively start dependencies err = terminal.StartAttachCtr(ctx, ctr, options.Stdout, options.Stderr, options.Stdin, options.DetachKeys, options.SigProxy, false) if err != nil && errors.Cause(err) != define.ErrDetach { return errors.Wrapf(err, "error attaching to container %s", ctr.ID()) } os.Stdout.WriteString("\n") return nil } func makeExecConfig(options entities.ExecOptions) *libpod.ExecConfig { execConfig := new(libpod.ExecConfig) execConfig.Command = options.Cmd execConfig.Terminal = options.Tty execConfig.Privileged = options.Privileged execConfig.Environment = options.Envs execConfig.User = options.User execConfig.WorkDir = options.WorkDir execConfig.DetachKeys = &options.DetachKeys execConfig.PreserveFDs = options.PreserveFDs execConfig.AttachStdin = options.Interactive return execConfig } func checkExecPreserveFDs(options entities.ExecOptions) error { if options.PreserveFDs > 0 { entries, err := ioutil.ReadDir("/proc/self/fd") if err != nil { return err } m := make(map[int]bool) for _, e := range entries { i, err := strconv.Atoi(e.Name()) if err != nil { return errors.Wrapf(err, "cannot parse %s in /proc/self/fd", e.Name()) } m[i] = true } for i := 3; i < 3+int(options.PreserveFDs); i++ { if _, found := m[i]; !found { return errors.New("invalid --preserve-fds=N specified. Not enough FDs available") } } } return nil } func (ic *ContainerEngine) ContainerExec(ctx context.Context, nameOrID string, options entities.ExecOptions, streams define.AttachStreams) (int, error) { ec := define.ExecErrorCodeGeneric err := checkExecPreserveFDs(options) if err != nil { return ec, err } ctrs, err := getContainersByContext(false, options.Latest, []string{nameOrID}, ic.Libpod) if err != nil { return ec, err } ctr := ctrs[0] execConfig := makeExecConfig(options) ec, err = terminal.ExecAttachCtr(ctx, ctr, execConfig, &streams) return define.TranslateExecErrorToExitCode(ec, err), err } func (ic *ContainerEngine) ContainerExecDetached(ctx context.Context, nameOrID string, options entities.ExecOptions) (string, error) { err := checkExecPreserveFDs(options) if err != nil { return "", err } ctrs, err := getContainersByContext(false, options.Latest, []string{nameOrID}, ic.Libpod) if err != nil { return "", err } ctr := ctrs[0] execConfig := makeExecConfig(options) // Make an exit command storageConfig := ic.Libpod.StorageConfig() runtimeConfig, err := ic.Libpod.GetConfig() if err != nil { return "", errors.Wrapf(err, "error retrieving Libpod configuration to build exec exit command") } // TODO: Add some ability to toggle syslog exitCommandArgs, err := generate.CreateExitCommandArgs(storageConfig, runtimeConfig, false, true, true) if err != nil { return "", errors.Wrapf(err, "error constructing exit command for exec session") } execConfig.ExitCommand = exitCommandArgs // Create and start the exec session id, err := ctr.ExecCreate(execConfig) if err != nil { return "", err } // TODO: we should try and retrieve exit code if this fails. if err := ctr.ExecStart(id); err != nil { return "", err } return id, nil } func (ic *ContainerEngine) ContainerStart(ctx context.Context, namesOrIds []string, options entities.ContainerStartOptions) ([]*entities.ContainerStartReport, error) { reports := []*entities.ContainerStartReport{} var exitCode = define.ExecErrorCodeGeneric containersNamesOrIds := namesOrIds if len(options.Filters) > 0 { filterFuncs := make([]libpod.ContainerFilter, 0, len(options.Filters)) if len(options.Filters) > 0 { for k, v := range options.Filters { generatedFunc, err := dfilters.GenerateContainerFilterFuncs(k, v, ic.Libpod) if err != nil { return nil, err } filterFuncs = append(filterFuncs, generatedFunc) } } candidates, err := ic.Libpod.GetContainers(filterFuncs...) if err != nil { return nil, err } containersNamesOrIds = []string{} for _, candidate := range candidates { for _, nameOrID := range namesOrIds { if nameOrID == candidate.ID() || nameOrID == candidate.Name() { containersNamesOrIds = append(containersNamesOrIds, nameOrID) } } } } ctrs, rawInputs, err := getContainersAndInputByContext(options.All, options.Latest, containersNamesOrIds, ic.Libpod) if err != nil { return nil, err } // There can only be one container if attach was used for i := range ctrs { ctr := ctrs[i] rawInput := ctr.ID() if !options.All { rawInput = rawInputs[i] } ctrState, err := ctr.State() if err != nil { return nil, err } ctrRunning := ctrState == define.ContainerStateRunning if options.Attach { err = terminal.StartAttachCtr(ctx, ctr, options.Stdout, options.Stderr, options.Stdin, options.DetachKeys, options.SigProxy, !ctrRunning) if errors.Cause(err) == define.ErrDetach { // User manually detached // Exit cleanly immediately reports = append(reports, &entities.ContainerStartReport{ Id: ctr.ID(), RawInput: rawInput, Err: nil, ExitCode: 0, }) return reports, nil } if errors.Cause(err) == define.ErrWillDeadlock { logrus.Debugf("Deadlock error: %v", err) reports = append(reports, &entities.ContainerStartReport{ Id: ctr.ID(), RawInput: rawInput, Err: err, ExitCode: define.ExitCode(err), }) return reports, errors.Errorf("attempting to start container %s would cause a deadlock; please run 'podman system renumber' to resolve", ctr.ID()) } if ctrRunning { reports = append(reports, &entities.ContainerStartReport{ Id: ctr.ID(), RawInput: rawInput, Err: nil, ExitCode: 0, }) return reports, err } if err != nil { reports = append(reports, &entities.ContainerStartReport{ Id: ctr.ID(), RawInput: rawInput, Err: err, ExitCode: exitCode, }) return reports, errors.Wrapf(err, "unable to start container %s", ctr.ID()) } if ecode, err := ctr.Wait(ctx); err != nil { if errors.Cause(err) == define.ErrNoSuchCtr { // Check events event, err := ic.Libpod.GetLastContainerEvent(ctx, ctr.ID(), events.Exited) if err != nil { logrus.Errorf("Cannot get exit code: %v", err) exitCode = define.ExecErrorCodeNotFound } else { exitCode = event.ContainerExitCode } } } else { exitCode = int(ecode) } reports = append(reports, &entities.ContainerStartReport{ Id: ctr.ID(), RawInput: rawInput, Err: err, ExitCode: exitCode, }) return reports, nil } // end attach // Start the container if it's not running already. if !ctrRunning { // Handle non-attach start // If the container is in a pod, also set to recursively start dependencies report := &entities.ContainerStartReport{ Id: ctr.ID(), RawInput: rawInput, ExitCode: 125, } if err := ctr.Start(ctx, true); err != nil { // if lastError != nil { // fmt.Fprintln(os.Stderr, lastError) // } report.Err = err if errors.Cause(err) == define.ErrWillDeadlock { report.Err = errors.Wrapf(err, "please run 'podman system renumber' to resolve deadlocks") reports = append(reports, report) continue } report.Err = errors.Wrapf(err, "unable to start container %q", ctr.ID()) reports = append(reports, report) continue } report.ExitCode = 0 reports = append(reports, report) } } return reports, nil } func (ic *ContainerEngine) ContainerList(ctx context.Context, options entities.ContainerListOptions) ([]entities.ListContainer, error) { if options.Latest { options.Last = 1 } return ps.GetContainerLists(ic.Libpod, options) } // ContainerDiff provides changes to given container func (ic *ContainerEngine) ContainerDiff(ctx context.Context, nameOrID string, opts entities.DiffOptions) (*entities.DiffReport, error) { if opts.Latest { ctnr, err := ic.Libpod.GetLatestContainer() if err != nil { return nil, errors.Wrap(err, "unable to get latest container") } nameOrID = ctnr.ID() } changes, err := ic.Libpod.GetDiff("", nameOrID) return &entities.DiffReport{Changes: changes}, err } func (ic *ContainerEngine) ContainerRun(ctx context.Context, opts entities.ContainerRunOptions) (*entities.ContainerRunReport, error) { warn, err := generate.CompleteSpec(ctx, ic.Libpod, opts.Spec) if err != nil { return nil, err } // Print warnings for _, w := range warn { fmt.Fprintf(os.Stderr, "%s\n", w) } ctr, err := generate.MakeContainer(ctx, ic.Libpod, opts.Spec) if err != nil { return nil, err } if opts.CIDFile != "" { if err := util.CreateCidFile(opts.CIDFile, ctr.ID()); err != nil { return nil, err } } report := entities.ContainerRunReport{Id: ctr.ID()} if logrus.GetLevel() == logrus.DebugLevel { cgroupPath, err := ctr.CGroupPath() if err == nil { logrus.Debugf("container %q has CgroupParent %q", ctr.ID(), cgroupPath) } } if opts.Detach { // if the container was created as part of a pod, also start its dependencies, if any. if err := ctr.Start(ctx, true); err != nil { // This means the command did not exist report.ExitCode = define.ExitCode(err) return &report, err } return &report, nil } // if the container was created as part of a pod, also start its dependencies, if any. if err := terminal.StartAttachCtr(ctx, ctr, opts.OutputStream, opts.ErrorStream, opts.InputStream, opts.DetachKeys, opts.SigProxy, true); err != nil { // We've manually detached from the container // Do not perform cleanup, or wait for container exit code // Just exit immediately if errors.Cause(err) == define.ErrDetach { report.ExitCode = 0 return &report, nil } if opts.Rm { if deleteError := ic.Libpod.RemoveContainer(ctx, ctr, true, false); deleteError != nil { logrus.Debugf("unable to remove container %s after failing to start and attach to it", ctr.ID()) } } if errors.Cause(err) == define.ErrWillDeadlock { logrus.Debugf("Deadlock error on %q: %v", ctr.ID(), err) report.ExitCode = define.ExitCode(err) return &report, errors.Errorf("attempting to start container %s would cause a deadlock; please run 'podman system renumber' to resolve", ctr.ID()) } report.ExitCode = define.ExitCode(err) return &report, err } if ecode, err := ctr.Wait(ctx); err != nil { if errors.Cause(err) == define.ErrNoSuchCtr { // Check events event, err := ic.Libpod.GetLastContainerEvent(ctx, ctr.ID(), events.Exited) if err != nil { logrus.Errorf("Cannot get exit code: %v", err) report.ExitCode = define.ExecErrorCodeNotFound } else { report.ExitCode = event.ContainerExitCode } } } else { report.ExitCode = int(ecode) } if opts.Rm && !ctr.ShouldRestart(ctx) { if err := ic.Libpod.RemoveContainer(ctx, ctr, false, true); err != nil { if errors.Cause(err) == define.ErrNoSuchCtr || errors.Cause(err) == define.ErrCtrRemoved { logrus.Infof("Container %s was already removed, skipping --rm", ctr.ID()) } else { logrus.Errorf("Error removing container %s: %v", ctr.ID(), err) } } } return &report, nil } func (ic *ContainerEngine) ContainerLogs(ctx context.Context, containers []string, options entities.ContainerLogsOptions) error { if options.StdoutWriter == nil && options.StderrWriter == nil { return errors.New("no io.Writer set for container logs") } var wg sync.WaitGroup ctrs, err := getContainersByContext(false, options.Latest, containers, ic.Libpod) if err != nil { return err } logOpts := &logs.LogOptions{ Multi: len(ctrs) > 1, Details: options.Details, Follow: options.Follow, Since: options.Since, Tail: options.Tail, Timestamps: options.Timestamps, UseName: options.Names, WaitGroup: &wg, } chSize := len(ctrs) * int(options.Tail) if chSize <= 0 { chSize = 1 } logChannel := make(chan *logs.LogLine, chSize) if err := ic.Libpod.Log(ctx, ctrs, logOpts, logChannel); err != nil { return err } go func() { wg.Wait() close(logChannel) }() for line := range logChannel { line.Write(options.StdoutWriter, options.StderrWriter, logOpts) } return nil } func (ic *ContainerEngine) ContainerCleanup(ctx context.Context, namesOrIds []string, options entities.ContainerCleanupOptions) ([]*entities.ContainerCleanupReport, error) { reports := []*entities.ContainerCleanupReport{} ctrs, err := getContainersByContext(options.All, options.Latest, namesOrIds, ic.Libpod) if err != nil { return nil, err } for _, ctr := range ctrs { var err error report := entities.ContainerCleanupReport{Id: ctr.ID()} if options.Exec != "" { if options.Remove { if err := ctr.ExecRemove(options.Exec, false); err != nil { return nil, err } } else { if err := ctr.ExecCleanup(options.Exec); err != nil { return nil, err } } return []*entities.ContainerCleanupReport{}, nil } if options.Remove && !ctr.ShouldRestart(ctx) { err = ic.Libpod.RemoveContainer(ctx, ctr, false, true) if err != nil { report.RmErr = errors.Wrapf(err, "failed to cleanup and remove container %v", ctr.ID()) } } else { err := ctr.Cleanup(ctx) if err != nil { report.CleanErr = errors.Wrapf(err, "failed to cleanup container %v", ctr.ID()) } } if options.RemoveImage { _, imageName := ctr.Image() imageEngine := ImageEngine{Libpod: ic.Libpod} _, rmErrors := imageEngine.Remove(ctx, []string{imageName}, entities.ImageRemoveOptions{}) report.RmiErr = errorhandling.JoinErrors(rmErrors) } reports = append(reports, &report) } return reports, nil } func (ic *ContainerEngine) ContainerInit(ctx context.Context, namesOrIds []string, options entities.ContainerInitOptions) ([]*entities.ContainerInitReport, error) { ctrs, err := getContainersByContext(options.All, options.Latest, namesOrIds, ic.Libpod) if err != nil { return nil, err } reports := make([]*entities.ContainerInitReport, 0, len(ctrs)) for _, ctr := range ctrs { report := entities.ContainerInitReport{Id: ctr.ID()} err := ctr.Init(ctx, ctr.PodID() != "") // If we're initializing all containers, ignore invalid state errors if options.All && errors.Cause(err) == define.ErrCtrStateInvalid { err = nil } report.Err = err reports = append(reports, &report) } return reports, nil } func (ic *ContainerEngine) ContainerMount(ctx context.Context, nameOrIDs []string, options entities.ContainerMountOptions) ([]*entities.ContainerMountReport, error) { if os.Geteuid() != 0 { if driver := ic.Libpod.StorageConfig().GraphDriverName; driver != "vfs" { // Do not allow to mount a graphdriver that is not vfs if we are creating the userns as part // of the mount command. return nil, fmt.Errorf("cannot mount using driver %s in rootless mode", driver) } became, ret, err := rootless.BecomeRootInUserNS("") if err != nil { return nil, err } if became { os.Exit(ret) } } reports := []*entities.ContainerMountReport{} // Attempt to mount named containers directly from storage, // this will fail and code will fall through to removing the container from libpod.` names := []string{} for _, ctr := range nameOrIDs { report := entities.ContainerMountReport{Id: ctr} if report.Path, report.Err = ic.Libpod.MountStorageContainer(ctr); report.Err != nil { names = append(names, ctr) } else { reports = append(reports, &report) } } ctrs, err := getContainersByContext(options.All, options.Latest, names, ic.Libpod) if err != nil { return nil, err } for _, ctr := range ctrs { report := entities.ContainerMountReport{Id: ctr.ID()} report.Path, report.Err = ctr.Mount() reports = append(reports, &report) } if len(reports) > 0 { return reports, nil } storageCtrs, err := ic.Libpod.StorageContainers() if err != nil { return nil, err } for _, sctr := range storageCtrs { mounted, path, err := ic.Libpod.IsStorageContainerMounted(sctr.ID) if err != nil { return nil, err } var name string if len(sctr.Names) > 0 { name = sctr.Names[0] } if mounted { reports = append(reports, &entities.ContainerMountReport{ Id: sctr.ID, Name: name, Path: path, }) } } // No containers were passed, so we send back what is mounted ctrs, err = getContainersByContext(true, false, []string{}, ic.Libpod) if err != nil { return nil, err } for _, ctr := range ctrs { mounted, path, err := ctr.Mounted() if err != nil { return nil, err } if mounted { reports = append(reports, &entities.ContainerMountReport{ Id: ctr.ID(), Name: ctr.Name(), Path: path, }) } } return reports, nil } func (ic *ContainerEngine) ContainerUnmount(ctx context.Context, nameOrIDs []string, options entities.ContainerUnmountOptions) ([]*entities.ContainerUnmountReport, error) { reports := []*entities.ContainerUnmountReport{} names := []string{} if options.All { storageCtrs, err := ic.Libpod.StorageContainers() if err != nil { return nil, err } for _, sctr := range storageCtrs { mounted, _, _ := ic.Libpod.IsStorageContainerMounted(sctr.ID) if mounted { report := entities.ContainerUnmountReport{Id: sctr.ID} if _, report.Err = ic.Libpod.UnmountStorageContainer(sctr.ID, options.Force); report.Err != nil { if errors.Cause(report.Err) != define.ErrCtrExists { reports = append(reports, &report) } } else { reports = append(reports, &report) } } } } for _, ctr := range nameOrIDs { report := entities.ContainerUnmountReport{Id: ctr} if _, report.Err = ic.Libpod.UnmountStorageContainer(ctr, options.Force); report.Err != nil { names = append(names, ctr) } else { reports = append(reports, &report) } } ctrs, err := getContainersByContext(options.All, options.Latest, names, ic.Libpod) if err != nil { return nil, err } for _, ctr := range ctrs { state, err := ctr.State() if err != nil { logrus.Debugf("Error umounting container %s state: %s", ctr.ID(), err.Error()) continue } if state == define.ContainerStateRunning { logrus.Debugf("Error umounting container %s, is running", ctr.ID()) continue } report := entities.ContainerUnmountReport{Id: ctr.ID()} if err := ctr.Unmount(options.Force); err != nil { if options.All && errors.Cause(err) == storage.ErrLayerNotMounted { logrus.Debugf("Error umounting container %s, storage.ErrLayerNotMounted", ctr.ID()) continue } report.Err = errors.Wrapf(err, "error unmounting container %s", ctr.ID()) } reports = append(reports, &report) } return reports, nil } // GetConfig returns a copy of the configuration used by the runtime func (ic *ContainerEngine) Config(_ context.Context) (*config.Config, error) { return ic.Libpod.GetConfig() } func (ic *ContainerEngine) ContainerPort(ctx context.Context, nameOrID string, options entities.ContainerPortOptions) ([]*entities.ContainerPortReport, error) { ctrs, err := getContainersByContext(options.All, options.Latest, []string{nameOrID}, ic.Libpod) if err != nil { return nil, err } reports := []*entities.ContainerPortReport{} for _, con := range ctrs { state, err := con.State() if err != nil { return nil, err } if state != define.ContainerStateRunning { continue } portmappings, err := con.PortMappings() if err != nil { return nil, err } if len(portmappings) > 0 { reports = append(reports, &entities.ContainerPortReport{ Id: con.ID(), Ports: portmappings, }) } } return reports, nil } // Shutdown Libpod engine func (ic *ContainerEngine) Shutdown(_ context.Context) { shutdownSync.Do(func() { _ = ic.Libpod.Shutdown(false) }) } func (ic *ContainerEngine) ContainerStats(ctx context.Context, namesOrIds []string, options entities.ContainerStatsOptions) (statsChan chan entities.ContainerStatsReport, err error) { statsChan = make(chan entities.ContainerStatsReport, 1) containerFunc := ic.Libpod.GetRunningContainers queryAll := false switch { case options.Latest: containerFunc = func() ([]*libpod.Container, error) { lastCtr, err := ic.Libpod.GetLatestContainer() if err != nil { return nil, err } return []*libpod.Container{lastCtr}, nil } case len(namesOrIds) > 0: containerFunc = func() ([]*libpod.Container, error) { return ic.Libpod.GetContainersByList(namesOrIds) } default: // No containers, no latest -> query all! queryAll = true containerFunc = ic.Libpod.GetAllContainers } go func() { defer close(statsChan) var ( err error containers []*libpod.Container containerStats map[string]*define.ContainerStats ) containerStats = make(map[string]*define.ContainerStats) stream: // label to flatten the scope select { case <-ctx.Done(): // client cancelled logrus.Debugf("Container stats stopped: context cancelled") return default: // just fall through and do work } // Anonymous func to easily use the return values for streaming. computeStats := func() ([]define.ContainerStats, error) { containers, err = containerFunc() if err != nil { return nil, errors.Wrapf(err, "unable to get list of containers") } reportStats := []define.ContainerStats{} for _, ctr := range containers { prev, ok := containerStats[ctr.ID()] if !ok { prev = &define.ContainerStats{} } stats, err := ctr.GetContainerStats(prev) if err != nil { cause := errors.Cause(err) if queryAll && (cause == define.ErrCtrRemoved || cause == define.ErrNoSuchCtr || cause == define.ErrCtrStateInvalid) { continue } if cause == cgroups.ErrCgroupV1Rootless { err = cause } return nil, err } containerStats[ctr.ID()] = stats reportStats = append(reportStats, *stats) } return reportStats, nil } report := entities.ContainerStatsReport{} report.Stats, report.Error = computeStats() statsChan <- report if report.Error != nil || !options.Stream { return } time.Sleep(time.Second) goto stream }() return statsChan, nil } // ShouldRestart returns whether the container should be restarted func (ic *ContainerEngine) ShouldRestart(ctx context.Context, nameOrID string) (*entities.BoolReport, error) { ctr, err := ic.Libpod.LookupContainer(nameOrID) if err != nil { return nil, err } return &entities.BoolReport{Value: ctr.ShouldRestart(ctx)}, nil } // ContainerRename renames the given container. func (ic *ContainerEngine) ContainerRename(ctx context.Context, nameOrID string, opts entities.ContainerRenameOptions) error { ctr, err := ic.Libpod.LookupContainer(nameOrID) if err != nil { return err } if _, err := ic.Libpod.RenameContainer(ctx, ctr, opts.NewName); err != nil { return err } return nil }