diff options
author | baude <bbaude@redhat.com> | 2019-03-07 15:20:29 -0600 |
---|---|---|
committer | baude <bbaude@redhat.com> | 2019-03-11 09:42:22 -0500 |
commit | 651520389d239f335248a27595d39a815ef95238 (patch) | |
tree | 819492990e69d0d5f5b9b276aa789e0d21e31297 /cmd/podman/create.go | |
parent | 9b42577c322b74906d4dfa64926d9f187e2e2976 (diff) | |
download | podman-651520389d239f335248a27595d39a815ef95238.tar.gz podman-651520389d239f335248a27595d39a815ef95238.tar.bz2 podman-651520389d239f335248a27595d39a815ef95238.zip |
preparation for remote-client create container
to prepare for being able to remotely run a container, we need to
perform a refactor to get code out of main because it is not
reusable. the shared location is a good starting spot though
eventually some will likely end up in pkg/spec/ at some point.
Signed-off-by: baude <bbaude@redhat.com>
Diffstat (limited to 'cmd/podman/create.go')
-rw-r--r-- | cmd/podman/create.go | 856 |
1 files changed, 2 insertions, 854 deletions
diff --git a/cmd/podman/create.go b/cmd/podman/create.go index 8a5d0cf73..bceb606f6 100644 --- a/cmd/podman/create.go +++ b/cmd/podman/create.go @@ -1,37 +1,15 @@ package main import ( - "context" - "encoding/json" "fmt" - "io" - "io/ioutil" "os" - "path/filepath" - "strconv" - "strings" - "syscall" - "github.com/containers/image/manifest" "github.com/containers/libpod/cmd/podman/cliconfig" "github.com/containers/libpod/cmd/podman/libpodruntime" "github.com/containers/libpod/cmd/podman/shared" - "github.com/containers/libpod/libpod" - "github.com/containers/libpod/libpod/image" - ann "github.com/containers/libpod/pkg/annotations" - "github.com/containers/libpod/pkg/inspect" - ns "github.com/containers/libpod/pkg/namespaces" "github.com/containers/libpod/pkg/rootless" - cc "github.com/containers/libpod/pkg/spec" - "github.com/containers/libpod/pkg/util" - "github.com/docker/docker/pkg/signal" - "github.com/docker/go-connections/nat" - "github.com/docker/go-units" - spec "github.com/opencontainers/runtime-spec/specs-go" - "github.com/opencontainers/selinux/go-selinux/label" - opentracing "github.com/opentracing/opentracing-go" + "github.com/opentracing/opentracing-go" "github.com/pkg/errors" - "github.com/sirupsen/logrus" "github.com/spf13/cobra" ) @@ -53,11 +31,6 @@ var ( podman create --annotation HELLO=WORLD alpine ls podman create -t -i --name myctr alpine ls`, } - - defaultEnvVariables = map[string]string{ - "PATH": "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin", - "TERM": "xterm", - } ) func init() { @@ -91,7 +64,7 @@ func createCmd(c *cliconfig.CreateValues) error { } defer runtime.Shutdown(false) - ctr, _, err := createContainer(&c.PodmanCommand, runtime) + ctr, _, err := shared.CreateContainer(getContext(), &c.PodmanCommand, runtime) if err != nil { return err } @@ -115,828 +88,3 @@ func createInit(c *cliconfig.PodmanCommand) error { return nil } - -func createContainer(c *cliconfig.PodmanCommand, runtime *libpod.Runtime) (*libpod.Container, *cc.CreateConfig, error) { - var ( - hasHealthCheck bool - healthCheck *manifest.Schema2HealthConfig - ) - if c.Bool("trace") { - span, _ := opentracing.StartSpanFromContext(Ctx, "createContainer") - defer span.Finish() - } - - rtc := runtime.GetConfig() - ctx := getContext() - rootfs := "" - if c.Bool("rootfs") { - rootfs = c.InputArgs[0] - } - - var err error - var cidFile *os.File - if c.IsSet("cidfile") && os.Geteuid() == 0 { - cidFile, err = libpod.OpenExclusiveFile(c.String("cidfile")) - if err != nil && os.IsExist(err) { - return nil, nil, errors.Errorf("container id file exists. Ensure another container is not using it or delete %s", c.String("cidfile")) - } - if err != nil { - return nil, nil, errors.Errorf("error opening cidfile %s", c.String("cidfile")) - } - defer cidFile.Close() - defer cidFile.Sync() - } - - imageName := "" - var data *inspect.ImageData = nil - - if rootfs == "" && !rootless.SkipStorageSetup() { - var writer io.Writer - if !c.Bool("quiet") { - writer = os.Stderr - } - - newImage, err := runtime.ImageRuntime().New(ctx, c.InputArgs[0], rtc.SignaturePolicyPath, "", writer, nil, image.SigningOptions{}, false, nil) - if err != nil { - return nil, nil, err - } - data, err = newImage.Inspect(ctx) - names := newImage.Names() - if len(names) > 0 { - imageName = names[0] - } else { - imageName = newImage.ID() - } - - // add healthcheck if it exists AND is correct mediatype - _, mediaType, err := newImage.Manifest(ctx) - if err != nil { - return nil, nil, errors.Wrapf(err, "unable to determine mediatype of image %s", newImage.ID()) - } - if mediaType == manifest.DockerV2Schema2MediaType { - healthCheck, err = newImage.GetHealthCheck(ctx) - if err != nil { - return nil, nil, errors.Wrapf(err, "unable to get healthcheck for %s", c.InputArgs[0]) - } - if healthCheck != nil { - hasHealthCheck = true - } - } - } - createConfig, err := parseCreateOpts(ctx, c, runtime, imageName, data) - if err != nil { - return nil, nil, err - } - - // Because parseCreateOpts does derive anything from the image, we add health check - // at this point. The rest is done by WithOptions. - createConfig.HasHealthCheck = hasHealthCheck - createConfig.HealthCheck = healthCheck - - ctr, err := createContainerFromCreateConfig(runtime, createConfig, ctx, nil) - if err != nil { - return nil, nil, err - } - if cidFile != nil { - _, err = cidFile.WriteString(ctr.ID()) - if err != nil { - logrus.Error(err) - } - - } - - logrus.Debugf("New container created %q", ctr.ID()) - return ctr, createConfig, nil -} - -func parseSecurityOpt(config *cc.CreateConfig, securityOpts []string) error { - var ( - labelOpts []string - ) - - if config.PidMode.IsHost() { - labelOpts = append(labelOpts, label.DisableSecOpt()...) - } else if config.PidMode.IsContainer() { - ctr, err := config.Runtime.LookupContainer(config.PidMode.Container()) - if err != nil { - return errors.Wrapf(err, "container %q not found", config.PidMode.Container()) - } - secopts, err := label.DupSecOpt(ctr.ProcessLabel()) - if err != nil { - return errors.Wrapf(err, "failed to duplicate label %q ", ctr.ProcessLabel()) - } - labelOpts = append(labelOpts, secopts...) - } - - if config.IpcMode.IsHost() { - labelOpts = append(labelOpts, label.DisableSecOpt()...) - } else if config.IpcMode.IsContainer() { - ctr, err := config.Runtime.LookupContainer(config.IpcMode.Container()) - if err != nil { - return errors.Wrapf(err, "container %q not found", config.IpcMode.Container()) - } - secopts, err := label.DupSecOpt(ctr.ProcessLabel()) - if err != nil { - return errors.Wrapf(err, "failed to duplicate label %q ", ctr.ProcessLabel()) - } - labelOpts = append(labelOpts, secopts...) - } - - for _, opt := range securityOpts { - if opt == "no-new-privileges" { - config.NoNewPrivs = true - } else { - con := strings.SplitN(opt, "=", 2) - if len(con) != 2 { - return fmt.Errorf("Invalid --security-opt 1: %q", opt) - } - - switch con[0] { - case "label": - labelOpts = append(labelOpts, con[1]) - case "apparmor": - config.ApparmorProfile = con[1] - case "seccomp": - config.SeccompProfilePath = con[1] - default: - return fmt.Errorf("Invalid --security-opt 2: %q", opt) - } - } - } - - if config.SeccompProfilePath == "" { - if _, err := os.Stat(libpod.SeccompOverridePath); err == nil { - config.SeccompProfilePath = libpod.SeccompOverridePath - } else { - if !os.IsNotExist(err) { - return errors.Wrapf(err, "can't check if %q exists", libpod.SeccompOverridePath) - } - if _, err := os.Stat(libpod.SeccompDefaultPath); err != nil { - if !os.IsNotExist(err) { - return errors.Wrapf(err, "can't check if %q exists", libpod.SeccompDefaultPath) - } - } else { - config.SeccompProfilePath = libpod.SeccompDefaultPath - } - } - } - config.LabelOpts = labelOpts - return nil -} - -// isPortInPortBindings determines if an exposed host port is in user -// provided ports -func isPortInPortBindings(pb map[nat.Port][]nat.PortBinding, port nat.Port) bool { - var hostPorts []string - for _, i := range pb { - hostPorts = append(hostPorts, i[0].HostPort) - } - return util.StringInSlice(port.Port(), hostPorts) -} - -// isPortInImagePorts determines if an exposed host port was given to us by metadata -// in the image itself -func isPortInImagePorts(exposedPorts map[string]struct{}, port string) bool { - for i := range exposedPorts { - fields := strings.Split(i, "/") - if port == fields[0] { - return true - } - } - return false -} - -func configureEntrypoint(c *cliconfig.PodmanCommand, data *inspect.ImageData) []string { - entrypoint := []string{} - if c.IsSet("entrypoint") { - // Force entrypoint to "" - if c.String("entrypoint") == "" { - return entrypoint - } - // Check if entrypoint specified is json - if err := json.Unmarshal([]byte(c.String("entrypoint")), &entrypoint); err == nil { - return entrypoint - } - // Return entrypoint as a single command - return []string{c.String("entrypoint")} - } - if data != nil { - return data.Config.Entrypoint - } - return entrypoint -} - -func configurePod(c *cliconfig.PodmanCommand, runtime *libpod.Runtime, namespaces map[string]string, podName string) (map[string]string, error) { - pod, err := runtime.LookupPod(podName) - if err != nil { - return namespaces, err - } - podInfraID, err := pod.InfraContainerID() - if err != nil { - return namespaces, err - } - if (namespaces["pid"] == cc.Pod) || (!c.IsSet("pid") && pod.SharesPID()) { - namespaces["pid"] = fmt.Sprintf("container:%s", podInfraID) - } - if (namespaces["net"] == cc.Pod) || (!c.IsSet("net") && !c.IsSet("network") && pod.SharesNet()) { - namespaces["net"] = fmt.Sprintf("container:%s", podInfraID) - } - if (namespaces["user"] == cc.Pod) || (!c.IsSet("user") && pod.SharesUser()) { - namespaces["user"] = fmt.Sprintf("container:%s", podInfraID) - } - if (namespaces["ipc"] == cc.Pod) || (!c.IsSet("ipc") && pod.SharesIPC()) { - namespaces["ipc"] = fmt.Sprintf("container:%s", podInfraID) - } - if (namespaces["uts"] == cc.Pod) || (!c.IsSet("uts") && pod.SharesUTS()) { - namespaces["uts"] = fmt.Sprintf("container:%s", podInfraID) - } - return namespaces, nil -} - -// Parses CLI options related to container creation into a config which can be -// parsed into an OCI runtime spec -func parseCreateOpts(ctx context.Context, c *cliconfig.PodmanCommand, runtime *libpod.Runtime, imageName string, data *inspect.ImageData) (*cc.CreateConfig, error) { - var ( - inputCommand, command []string - memoryLimit, memoryReservation, memorySwap, memoryKernel int64 - blkioWeight uint16 - namespaces map[string]string - ) - if c.IsSet("restart") { - return nil, errors.Errorf("--restart option is not supported.\nUse systemd unit files for restarting containers") - } - - idmappings, err := util.ParseIDMapping(c.StringSlice("uidmap"), c.StringSlice("gidmap"), c.String("subuidname"), c.String("subgidname")) - if err != nil { - return nil, err - } - - if c.String("mac-address") != "" { - return nil, errors.Errorf("--mac-address option not currently supported") - } - - imageID := "" - - inputCommand = c.InputArgs[1:] - if data != nil { - imageID = data.ID - } - - rootfs := "" - if c.Bool("rootfs") { - rootfs = c.InputArgs[0] - } - - sysctl, err := validateSysctl(c.StringSlice("sysctl")) - if err != nil { - return nil, errors.Wrapf(err, "invalid value for sysctl") - } - - if c.String("memory") != "" { - memoryLimit, err = units.RAMInBytes(c.String("memory")) - if err != nil { - return nil, errors.Wrapf(err, "invalid value for memory") - } - } - if c.String("memory-reservation") != "" { - memoryReservation, err = units.RAMInBytes(c.String("memory-reservation")) - if err != nil { - return nil, errors.Wrapf(err, "invalid value for memory-reservation") - } - } - if c.String("memory-swap") != "" { - memorySwap, err = units.RAMInBytes(c.String("memory-swap")) - if err != nil { - return nil, errors.Wrapf(err, "invalid value for memory-swap") - } - } - if c.String("kernel-memory") != "" { - memoryKernel, err = units.RAMInBytes(c.String("kernel-memory")) - if err != nil { - return nil, errors.Wrapf(err, "invalid value for kernel-memory") - } - } - if c.String("blkio-weight") != "" { - u, err := strconv.ParseUint(c.String("blkio-weight"), 10, 16) - if err != nil { - return nil, errors.Wrapf(err, "invalid value for blkio-weight") - } - blkioWeight = uint16(u) - } - var mountList []spec.Mount - if mountList, err = parseMounts(c.StringArray("mount")); err != nil { - return nil, err - } - - if err = parseVolumes(c.StringArray("volume")); err != nil { - return nil, err - } - - if err = parseVolumesFrom(c.StringSlice("volumes-from")); err != nil { - return nil, err - } - - tty := c.Bool("tty") - - if c.Flag("cpu-period").Changed && c.Flag("cpus").Changed { - return nil, errors.Errorf("--cpu-period and --cpus cannot be set together") - } - if c.Flag("cpu-quota").Changed && c.Flag("cpus").Changed { - return nil, errors.Errorf("--cpu-quota and --cpus cannot be set together") - } - - // EXPOSED PORTS - var portBindings map[nat.Port][]nat.PortBinding - if data != nil { - portBindings, err = cc.ExposedPorts(c.StringSlice("expose"), c.StringSlice("publish"), c.Bool("publish-all"), data.Config.ExposedPorts) - if err != nil { - return nil, err - } - } - - // Kernel Namespaces - // TODO Fix handling of namespace from pod - // Instead of integrating here, should be done in libpod - // However, that also involves setting up security opts - // when the pod's namespace is integrated - namespaceNet := c.String("network") - if c.Flag("net").Changed { - namespaceNet = c.String("net") - } - namespaces = map[string]string{ - "pid": c.String("pid"), - "net": namespaceNet, - "ipc": c.String("ipc"), - "user": c.String("userns"), - "uts": c.String("uts"), - } - - originalPodName := c.String("pod") - podName := strings.Replace(originalPodName, "new:", "", 1) - // after we strip out :new, make sure there is something left for a pod name - if len(podName) < 1 && c.IsSet("pod") { - return nil, errors.Errorf("new pod name must be at least one character") - } - if c.IsSet("pod") { - if strings.HasPrefix(originalPodName, "new:") { - if rootless.IsRootless() { - // To create a new pod, we must immediately create the userns. - became, ret, err := rootless.BecomeRootInUserNS() - if err != nil { - return nil, err - } - if became { - os.Exit(ret) - } - } - // pod does not exist; lets make it - var podOptions []libpod.PodCreateOption - podOptions = append(podOptions, libpod.WithPodName(podName), libpod.WithInfraContainer(), libpod.WithPodCgroups()) - if len(portBindings) > 0 { - ociPortBindings, err := cc.NatToOCIPortBindings(portBindings) - if err != nil { - return nil, err - } - podOptions = append(podOptions, libpod.WithInfraContainerPorts(ociPortBindings)) - } - - podNsOptions, err := shared.GetNamespaceOptions(strings.Split(DefaultKernelNamespaces, ",")) - if err != nil { - return nil, err - } - podOptions = append(podOptions, podNsOptions...) - // make pod - pod, err := runtime.NewPod(ctx, podOptions...) - if err != nil { - return nil, err - } - logrus.Debugf("pod %s created by new container request", pod.ID()) - - // The container now cannot have port bindings; so we reset the map - portBindings = make(map[nat.Port][]nat.PortBinding) - } - namespaces, err = configurePod(c, runtime, namespaces, podName) - if err != nil { - return nil, err - } - } - - pidMode := ns.PidMode(namespaces["pid"]) - if !cc.Valid(string(pidMode), pidMode) { - return nil, errors.Errorf("--pid %q is not valid", c.String("pid")) - } - - usernsMode := ns.UsernsMode(namespaces["user"]) - if !cc.Valid(string(usernsMode), usernsMode) { - return nil, errors.Errorf("--userns %q is not valid", namespaces["user"]) - } - - utsMode := ns.UTSMode(namespaces["uts"]) - if !cc.Valid(string(utsMode), utsMode) { - return nil, errors.Errorf("--uts %q is not valid", namespaces["uts"]) - } - - ipcMode := ns.IpcMode(namespaces["ipc"]) - if !cc.Valid(string(ipcMode), ipcMode) { - return nil, errors.Errorf("--ipc %q is not valid", ipcMode) - } - - // Make sure if network is set to container namespace, port binding is not also being asked for - netMode := ns.NetworkMode(namespaces["net"]) - if netMode.IsContainer() { - if len(portBindings) > 0 { - return nil, errors.Errorf("cannot set port bindings on an existing container network namespace") - } - } - - // USER - user := c.String("user") - if user == "" { - if data == nil { - user = "0" - } else { - user = data.Config.User - } - } - - // STOP SIGNAL - stopSignal := syscall.SIGTERM - signalString := "" - if data != nil { - signalString = data.Config.StopSignal - } - if c.IsSet("stop-signal") { - signalString = c.String("stop-signal") - } - if signalString != "" { - stopSignal, err = signal.ParseSignal(signalString) - if err != nil { - return nil, err - } - } - - // ENVIRONMENT VARIABLES - env := defaultEnvVariables - if data != nil { - for _, e := range data.Config.Env { - split := strings.SplitN(e, "=", 2) - if len(split) > 1 { - env[split[0]] = split[1] - } else { - env[split[0]] = "" - } - } - } - if err := readKVStrings(env, c.StringSlice("env-file"), c.StringSlice("env")); err != nil { - return nil, errors.Wrapf(err, "unable to process environment variables") - } - - // LABEL VARIABLES - labels, err := getAllLabels(c.StringSlice("label-file"), c.StringArray("label")) - if err != nil { - return nil, errors.Wrapf(err, "unable to process labels") - } - if data != nil { - for key, val := range data.Config.Labels { - if _, ok := labels[key]; !ok { - labels[key] = val - } - } - } - - // ANNOTATIONS - annotations := make(map[string]string) - // First, add our default annotations - annotations[ann.ContainerType] = "sandbox" - annotations[ann.TTY] = "false" - if tty { - annotations[ann.TTY] = "true" - } - if data != nil { - // Next, add annotations from the image - for key, value := range data.Annotations { - annotations[key] = value - } - } - // Last, add user annotations - for _, annotation := range c.StringSlice("annotation") { - splitAnnotation := strings.SplitN(annotation, "=", 2) - if len(splitAnnotation) < 2 { - return nil, errors.Errorf("Annotations must be formatted KEY=VALUE") - } - annotations[splitAnnotation[0]] = splitAnnotation[1] - } - - // WORKING DIRECTORY - workDir := "/" - if c.IsSet("workdir") || c.IsSet("w") { - workDir = c.String("workdir") - } else if data != nil && data.Config.WorkingDir != "" { - workDir = data.Config.WorkingDir - } - - entrypoint := configureEntrypoint(c, data) - // Build the command - // If we have an entry point, it goes first - if len(entrypoint) > 0 { - command = entrypoint - } - if len(inputCommand) > 0 { - // User command overrides data CMD - command = append(command, inputCommand...) - } else if data != nil && len(data.Config.Cmd) > 0 && !c.IsSet("entrypoint") { - // If not user command, add CMD - command = append(command, data.Config.Cmd...) - } - - if data != nil && len(command) == 0 { - return nil, errors.Errorf("No command specified on command line or as CMD or ENTRYPOINT in this image") - } - - // SHM Size - shmSize, err := units.FromHumanSize(c.String("shm-size")) - if err != nil { - return nil, errors.Wrapf(err, "unable to translate --shm-size") - } - - // Verify the additional hosts are in correct format - for _, host := range c.StringSlice("add-host") { - if _, err := validateExtraHost(host); err != nil { - return nil, err - } - } - - // Check for . and dns-search domains - if util.StringInSlice(".", c.StringSlice("dns-search")) && len(c.StringSlice("dns-search")) > 1 { - return nil, errors.Errorf("cannot pass additional search domains when also specifying '.'") - } - - // Validate domains are good - for _, dom := range c.StringSlice("dns-search") { - if _, err := validateDomain(dom); err != nil { - return nil, err - } - } - - var ImageVolumes map[string]struct{} - if data != nil && c.String("image-volume") != "ignore" { - ImageVolumes = data.Config.Volumes - } - - var imageVolType = map[string]string{ - "bind": "", - "tmpfs": "", - "ignore": "", - } - if _, ok := imageVolType[c.String("image-volume")]; !ok { - return nil, errors.Errorf("invalid image-volume type %q. Pick one of bind, tmpfs, or ignore", c.String("image-volume")) - } - - var systemd bool - if command != nil && c.Bool("systemd") && ((filepath.Base(command[0]) == "init") || (filepath.Base(command[0]) == "systemd")) { - systemd = true - if signalString == "" { - stopSignal, err = signal.ParseSignal("RTMIN+3") - if err != nil { - return nil, errors.Wrapf(err, "error parsing systemd signal") - } - } - } - // This is done because cobra cannot have two aliased flags. So we have to check - // both - network := c.String("network") - if c.Flag("net").Changed { - network = c.String("net") - } - - var memorySwappiness int64 - if c.Flags().Lookup("memory-swappiness") != nil { - memorySwappiness, _ = c.Flags().GetInt64("memory-swappiness") - } - config := &cc.CreateConfig{ - Runtime: runtime, - Annotations: annotations, - BuiltinImgVolumes: ImageVolumes, - ConmonPidFile: c.String("conmon-pidfile"), - ImageVolumeType: c.String("image-volume"), - CapAdd: c.StringSlice("cap-add"), - CapDrop: c.StringSlice("cap-drop"), - CgroupParent: c.String("cgroup-parent"), - Command: command, - Detach: c.Bool("detach"), - Devices: c.StringSlice("device"), - DNSOpt: c.StringSlice("dns-opt"), - DNSSearch: c.StringSlice("dns-search"), - DNSServers: c.StringSlice("dns"), - Entrypoint: entrypoint, - Env: env, - //ExposedPorts: ports, - GroupAdd: c.StringSlice("group-add"), - Hostname: c.String("hostname"), - HostAdd: c.StringSlice("add-host"), - IDMappings: idmappings, - Image: imageName, - ImageID: imageID, - Interactive: c.Bool("interactive"), - //IP6Address: c.String("ipv6"), // Not implemented yet - needs CNI support for static v6 - IPAddress: c.String("ip"), - Labels: labels, - //LinkLocalIP: c.StringSlice("link-local-ip"), // Not implemented yet - LogDriver: c.String("log-driver"), - LogDriverOpt: c.StringSlice("log-opt"), - MacAddress: c.String("mac-address"), - Name: c.String("name"), - Network: network, - //NetworkAlias: c.StringSlice("network-alias"), // Not implemented - does this make sense in Podman? - IpcMode: ipcMode, - NetMode: netMode, - UtsMode: utsMode, - PidMode: pidMode, - Pod: podName, - Privileged: c.Bool("privileged"), - Publish: c.StringSlice("publish"), - PublishAll: c.Bool("publish-all"), - PortBindings: portBindings, - Quiet: c.Bool("quiet"), - ReadOnlyRootfs: c.Bool("read-only"), - Resources: cc.CreateResourceConfig{ - BlkioWeight: blkioWeight, - BlkioWeightDevice: c.StringSlice("blkio-weight-device"), - CPUShares: c.Uint64("cpu-shares"), - CPUPeriod: c.Uint64("cpu-period"), - CPUsetCPUs: c.String("cpuset-cpus"), - CPUsetMems: c.String("cpuset-mems"), - CPUQuota: c.Int64("cpu-quota"), - CPURtPeriod: c.Uint64("cpu-rt-period"), - CPURtRuntime: c.Int64("cpu-rt-runtime"), - CPUs: c.Float64("cpus"), - DeviceReadBps: c.StringSlice("device-read-bps"), - DeviceReadIOps: c.StringSlice("device-read-iops"), - DeviceWriteBps: c.StringSlice("device-write-bps"), - DeviceWriteIOps: c.StringSlice("device-write-iops"), - DisableOomKiller: c.Bool("oom-kill-disable"), - ShmSize: shmSize, - Memory: memoryLimit, - MemoryReservation: memoryReservation, - MemorySwap: memorySwap, - MemorySwappiness: int(memorySwappiness), - KernelMemory: memoryKernel, - OomScoreAdj: c.Int("oom-score-adj"), - PidsLimit: c.Int64("pids-limit"), - Ulimit: c.StringSlice("ulimit"), - }, - Rm: c.Bool("rm"), - StopSignal: stopSignal, - StopTimeout: c.Uint("stop-timeout"), - Sysctl: sysctl, - Systemd: systemd, - Tmpfs: c.StringSlice("tmpfs"), - Tty: tty, - User: user, - UsernsMode: usernsMode, - Mounts: mountList, - Volumes: c.StringArray("volume"), - WorkDir: workDir, - Rootfs: rootfs, - VolumesFrom: c.StringSlice("volumes-from"), - Syslog: c.GlobalFlags.Syslog, - } - if c.Bool("init") { - initPath := c.String("init-path") - if initPath == "" { - initPath = runtime.GetConfig().InitPath - } - if err := config.AddContainerInitBinary(initPath); err != nil { - return nil, err - } - } - - if config.Privileged { - config.LabelOpts = label.DisableSecOpt() - } else { - if err := parseSecurityOpt(config, c.StringArray("security-opt")); err != nil { - return nil, err - } - } - config.SecurityOpts = c.StringArray("security-opt") - warnings, err := verifyContainerResources(config, false) - if err != nil { - return nil, err - } - for _, warning := range warnings { - fmt.Fprintln(os.Stderr, warning) - } - return config, nil -} - -type namespace interface { - IsContainer() bool - Container() string -} - -func joinOrCreateRootlessUserNamespace(createConfig *cc.CreateConfig, runtime *libpod.Runtime) (bool, int, error) { - if os.Geteuid() == 0 { - return false, 0, nil - } - - if createConfig.Pod != "" { - pod, err := runtime.LookupPod(createConfig.Pod) - if err != nil { - return false, -1, err - } - inspect, err := pod.Inspect() - for _, ctr := range inspect.Containers { - prevCtr, err := runtime.LookupContainer(ctr.ID) - if err != nil { - return false, -1, err - } - s, err := prevCtr.State() - if err != nil { - return false, -1, err - } - if s != libpod.ContainerStateRunning && s != libpod.ContainerStatePaused { - continue - } - data, err := ioutil.ReadFile(prevCtr.Config().ConmonPidFile) - if err != nil { - return false, -1, errors.Wrapf(err, "cannot read conmon PID file %q", prevCtr.Config().ConmonPidFile) - } - conmonPid, err := strconv.Atoi(string(data)) - if err != nil { - return false, -1, errors.Wrapf(err, "cannot parse PID %q", data) - } - return rootless.JoinDirectUserAndMountNS(uint(conmonPid)) - } - } - - namespacesStr := []string{string(createConfig.IpcMode), string(createConfig.NetMode), string(createConfig.UsernsMode), string(createConfig.PidMode), string(createConfig.UtsMode)} - for _, i := range namespacesStr { - if cc.IsNS(i) { - return rootless.JoinNSPath(cc.NS(i)) - } - } - - namespaces := []namespace{createConfig.IpcMode, createConfig.NetMode, createConfig.UsernsMode, createConfig.PidMode, createConfig.UtsMode} - for _, i := range namespaces { - if i.IsContainer() { - ctr, err := runtime.LookupContainer(i.Container()) - if err != nil { - return false, -1, err - } - pid, err := ctr.PID() - if err != nil { - return false, -1, err - } - if pid == 0 { - if createConfig.Pod != "" { - continue - } - return false, -1, errors.Errorf("dependency container %s is not running", ctr.ID()) - } - - data, err := ioutil.ReadFile(ctr.Config().ConmonPidFile) - if err != nil { - return false, -1, errors.Wrapf(err, "cannot read conmon PID file %q", ctr.Config().ConmonPidFile) - } - conmonPid, err := strconv.Atoi(string(data)) - if err != nil { - return false, -1, errors.Wrapf(err, "cannot parse PID %q", data) - } - return rootless.JoinDirectUserAndMountNS(uint(conmonPid)) - } - } - return rootless.BecomeRootInUserNS() -} - -func createContainerFromCreateConfig(r *libpod.Runtime, createConfig *cc.CreateConfig, ctx context.Context, pod *libpod.Pod) (*libpod.Container, error) { - runtimeSpec, err := cc.CreateConfigToOCISpec(createConfig) - if err != nil { - return nil, err - } - - options, err := createConfig.GetContainerCreateOptions(r, pod) - if err != nil { - return nil, err - } - became, ret, err := joinOrCreateRootlessUserNamespace(createConfig, r) - if err != nil { - return nil, err - } - if became { - os.Exit(ret) - } - - ctr, err := r.NewContainer(ctx, runtimeSpec, options...) - if err != nil { - return nil, err - } - - createConfigJSON, err := json.Marshal(createConfig) - if err != nil { - return nil, err - } - if err := ctr.AddArtifact("create-config", createConfigJSON); err != nil { - return nil, err - } - return ctr, nil -} |