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-rw-r--r--cmd/podman/create.go507
1 files changed, 507 insertions, 0 deletions
diff --git a/cmd/podman/create.go b/cmd/podman/create.go
new file mode 100644
index 000000000..f65bc49c6
--- /dev/null
+++ b/cmd/podman/create.go
@@ -0,0 +1,507 @@
+package main
+
+import (
+ "encoding/json"
+ "fmt"
+ "os"
+ "strconv"
+ "strings"
+
+ "github.com/docker/docker/api/types/container"
+ "github.com/docker/go-units"
+ "github.com/opencontainers/selinux/go-selinux/label"
+ "github.com/pkg/errors"
+ "github.com/projectatomic/libpod/libpod"
+ "github.com/sirupsen/logrus"
+ "github.com/urfave/cli"
+ pb "k8s.io/kubernetes/pkg/kubelet/apis/cri/v1alpha1/runtime"
+)
+
+type mountType string
+
+// Type constants
+const (
+ // TypeBind is the type for mounting host dir
+ TypeBind mountType = "bind"
+ // TypeVolume is the type for remote storage volumes
+ // TypeVolume mountType = "volume" // re-enable upon use
+ // TypeTmpfs is the type for mounting tmpfs
+ TypeTmpfs mountType = "tmpfs"
+)
+
+var (
+ defaultEnvVariables = map[string]string{
+ "PATH": "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
+ "TERM": "xterm",
+ }
+)
+
+type createResourceConfig struct {
+ BlkioWeight uint16 // blkio-weight
+ BlkioWeightDevice []string // blkio-weight-device
+ CPUPeriod uint64 // cpu-period
+ CPUQuota int64 // cpu-quota
+ CPURtPeriod uint64 // cpu-rt-period
+ CPURtRuntime int64 // cpu-rt-runtime
+ CPUShares uint64 // cpu-shares
+ CPUs string // cpus
+ CPUsetCPUs string
+ CPUsetMems string // cpuset-mems
+ DeviceReadBps []string // device-read-bps
+ DeviceReadIOps []string // device-read-iops
+ DeviceWriteBps []string // device-write-bps
+ DeviceWriteIOps []string // device-write-iops
+ DisableOomKiller bool // oom-kill-disable
+ KernelMemory int64 // kernel-memory
+ Memory int64 //memory
+ MemoryReservation int64 // memory-reservation
+ MemorySwap int64 //memory-swap
+ MemorySwappiness int // memory-swappiness
+ OomScoreAdj int //oom-score-adj
+ PidsLimit int64 // pids-limit
+ ShmSize string
+ Ulimit []string //ulimit
+}
+
+type createConfig struct {
+ Runtime *libpod.Runtime
+ Args []string
+ CapAdd []string // cap-add
+ CapDrop []string // cap-drop
+ CidFile string
+ CgroupParent string // cgroup-parent
+ Command []string
+ Detach bool // detach
+ Devices []*pb.Device // device
+ DNSOpt []string //dns-opt
+ DNSSearch []string //dns-search
+ DNSServers []string //dns
+ Entrypoint string //entrypoint
+ Env map[string]string //env
+ Expose []string //expose
+ GroupAdd []uint32 // group-add
+ Hostname string //hostname
+ Image string
+ Interactive bool //interactive
+ IpcMode container.IpcMode //ipc
+ IP6Address string //ipv6
+ IPAddress string //ip
+ Labels map[string]string //label
+ LinkLocalIP []string // link-local-ip
+ LogDriver string // log-driver
+ LogDriverOpt []string // log-opt
+ MacAddress string //mac-address
+ Name string //name
+ NetMode container.NetworkMode //net
+ Network string //network
+ NetworkAlias []string //network-alias
+ PidMode container.PidMode //pid
+ NsUser string
+ Pod string //pod
+ Privileged bool //privileged
+ Publish []string //publish
+ PublishAll bool //publish-all
+ ReadOnlyRootfs bool //read-only
+ Resources createResourceConfig
+ Rm bool //rm
+ ShmDir string
+ SigProxy bool //sig-proxy
+ StopSignal string // stop-signal
+ StopTimeout int64 // stop-timeout
+ StorageOpts []string //storage-opt
+ Sysctl map[string]string //sysctl
+ Tmpfs []string // tmpfs
+ Tty bool //tty
+ User uint32 //user
+ Group uint32 // group
+ UtsMode container.UTSMode //uts
+ Volumes []string //volume
+ WorkDir string //workdir
+ MountLabel string //SecurityOpts
+ ProcessLabel string //SecurityOpts
+ NoNewPrivileges bool //SecurityOpts
+ ApparmorProfile string //SecurityOpts
+ SeccompProfilePath string //SecurityOpts
+ SecurityOpts []string
+}
+
+var createDescription = "Creates a new container from the given image or" +
+ " storage and prepares it for running the specified command. The" +
+ " container ID is then printed to stdout. You can then start it at" +
+ " any time with the podman start <container_id> command. The container" +
+ " will be created with the initial state 'created'."
+
+var createCommand = cli.Command{
+ Name: "create",
+ Usage: "create but do not start a container",
+ Description: createDescription,
+ Flags: createFlags,
+ Action: createCmd,
+ ArgsUsage: "IMAGE [COMMAND [ARG...]]",
+ SkipArgReorder: true,
+ UseShortOptionHandling: true,
+}
+
+func createCmd(c *cli.Context) error {
+ // TODO should allow user to create based off a directory on the host not just image
+ // Need CLI support for this
+ var imageName string
+ if err := validateFlags(c, createFlags); err != nil {
+ return err
+ }
+
+ runtime, err := getRuntime(c)
+ if err != nil {
+ return errors.Wrapf(err, "error creating libpod runtime")
+ }
+ defer runtime.Shutdown(false)
+
+ createConfig, err := parseCreateOpts(c, runtime)
+ if err != nil {
+ return err
+ }
+
+ // Deal with the image after all the args have been checked
+ createImage := runtime.NewImage(createConfig.Image)
+ createImage.LocalName, _ = createImage.GetLocalImageName()
+ if createImage.LocalName == "" {
+ // The image wasnt found by the user input'd name or its fqname
+ // Pull the image
+ fmt.Printf("Trying to pull %s...", createImage.PullName)
+ createImage.Pull()
+ }
+
+ runtimeSpec, err := createConfigToOCISpec(createConfig)
+ if err != nil {
+ return err
+ }
+ if createImage.LocalName != "" {
+ nameIsID, err := runtime.IsImageID(createImage.LocalName)
+ if err != nil {
+ return err
+ }
+ if nameIsID {
+ // If the input from the user is an ID, then we need to get the image
+ // name for cstorage
+ createImage.LocalName, err = createImage.GetNameByID()
+ if err != nil {
+ return err
+ }
+ }
+ imageName = createImage.LocalName
+ } else {
+ imageName, err = createImage.GetFQName()
+ }
+ if err != nil {
+ return err
+ }
+ imageID, err := createImage.GetImageID()
+ if err != nil {
+ return err
+ }
+ options, err := createConfig.GetContainerCreateOptions()
+ if err != nil {
+ return errors.Wrapf(err, "unable to parse new container options")
+ }
+ // Gather up the options for NewContainer which consist of With... funcs
+ options = append(options, libpod.WithRootFSFromImage(imageID, imageName, false))
+ options = append(options, libpod.WithSELinuxLabels(createConfig.ProcessLabel, createConfig.MountLabel))
+ options = append(options, libpod.WithShmDir(createConfig.ShmDir))
+ ctr, err := runtime.NewContainer(runtimeSpec, options...)
+ if err != nil {
+ return err
+ }
+
+ createConfigJSON, err := json.Marshal(createConfig)
+ if err != nil {
+ return err
+ }
+ if err := ctr.AddArtifact("create-config", createConfigJSON); err != nil {
+ return err
+ }
+
+ logrus.Debug("new container created ", ctr.ID())
+
+ if c.String("cidfile") != "" {
+ libpod.WriteFile(ctr.ID(), c.String("cidfile"))
+ } else {
+ fmt.Printf("%s\n", ctr.ID())
+ }
+
+ return nil
+}
+
+const seccompDefaultPath = "/etc/crio/seccomp.json"
+
+func parseSecurityOpt(config *createConfig, securityOpts []string) error {
+ var (
+ labelOpts []string
+ err error
+ )
+
+ 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())
+ }
+ labelOpts = append(labelOpts, label.DupSecOpt(ctr.ProcessLabel())...)
+ }
+
+ 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())
+ }
+ labelOpts = append(labelOpts, label.DupSecOpt(ctr.ProcessLabel())...)
+ }
+
+ for _, opt := range securityOpts {
+ if opt == "no-new-privileges" {
+ config.NoNewPrivileges = 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(seccompDefaultPath); err != nil {
+ if !os.IsNotExist(err) {
+ return errors.Wrapf(err, "can't check if %q exists", seccompDefaultPath)
+ }
+ } else {
+ config.SeccompProfilePath = seccompDefaultPath
+ }
+ }
+ config.ProcessLabel, config.MountLabel, err = label.InitLabels(labelOpts)
+ return err
+}
+
+// Parses CLI options related to container creation into a config which can be
+// parsed into an OCI runtime spec
+func parseCreateOpts(c *cli.Context, runtime *libpod.Runtime) (*createConfig, error) {
+ var command []string
+ var memoryLimit, memoryReservation, memorySwap, memoryKernel int64
+ var blkioWeight uint16
+ var uid, gid uint32
+
+ if len(c.Args()) < 1 {
+ return nil, errors.Errorf("image name or ID is required")
+ }
+ image := c.Args()[0]
+
+ if len(c.Args()) > 1 {
+ command = c.Args()[1:]
+ }
+
+ // LABEL VARIABLES
+ labels, err := getAllLabels(c.StringSlice("label-file"), c.StringSlice("labels"))
+ if err != nil {
+ return &createConfig{}, errors.Wrapf(err, "unable to process labels")
+ }
+ // ENVIRONMENT VARIABLES
+ env := defaultEnvVariables
+ if err := readKVStrings(env, c.StringSlice("env-file"), c.StringSlice("env")); err != nil {
+ return &createConfig{}, errors.Wrapf(err, "unable to process environment variables")
+ }
+
+ sysctl, err := convertStringSliceToMap(c.StringSlice("sysctl"), "=")
+ if err != nil {
+ return &createConfig{}, errors.Wrapf(err, "sysctl values must be in the form of KEY=VALUE")
+ }
+
+ groupAdd, err := stringSlicetoUint32Slice(c.StringSlice("group-add"))
+ if err != nil {
+ return &createConfig{}, errors.Wrapf(err, "invalid value for groups provided")
+ }
+
+ if c.String("user") != "" {
+ // TODO
+ // We need to mount the imagefs and get the uid/gid
+ // For now, user zeros
+ uid = 0
+ gid = 0
+ }
+
+ 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)
+ }
+
+ if err = parseVolumes(c.StringSlice("volume")); err != nil {
+ return nil, err
+ }
+
+ // Because we cannot do a non-terminal attach, we need to set tty to true
+ // if detach is not false
+ // TODO Allow non-terminal attach
+ tty := c.Bool("tty")
+ if !c.Bool("detach") && !tty {
+ tty = true
+ }
+
+ pidMode := container.PidMode(c.String("pid"))
+ if !pidMode.Valid() {
+ return nil, errors.Errorf("--pid %q is not valid", c.String("pid"))
+ }
+
+ if c.Bool("detach") && c.Bool("rm") {
+ return nil, errors.Errorf("--rm and --detach can not be specified together")
+ }
+
+ utsMode := container.UTSMode(c.String("uts"))
+ if !utsMode.Valid() {
+ return nil, errors.Errorf("--uts %q is not valid", c.String("uts"))
+ }
+ ipcMode := container.IpcMode(c.String("ipc"))
+ if !ipcMode.Valid() {
+ return nil, errors.Errorf("--ipc %q is not valid", ipcMode)
+ }
+ shmDir := ""
+ if ipcMode.IsHost() {
+ shmDir = "/dev/shm"
+ } else if ipcMode.IsContainer() {
+ ctr, err := runtime.LookupContainer(ipcMode.Container())
+ if err != nil {
+ return nil, errors.Wrapf(err, "container %q not found", ipcMode.Container())
+ }
+ shmDir = ctr.ShmDir()
+ }
+
+ config := &createConfig{
+ Runtime: runtime,
+ CapAdd: c.StringSlice("cap-add"),
+ CapDrop: c.StringSlice("cap-drop"),
+ CgroupParent: c.String("cgroup-parent"),
+ Command: command,
+ Detach: c.Bool("detach"),
+ DNSOpt: c.StringSlice("dns-opt"),
+ DNSSearch: c.StringSlice("dns-search"),
+ DNSServers: c.StringSlice("dns"),
+ Entrypoint: c.String("entrypoint"),
+ Env: env,
+ Expose: c.StringSlice("expose"),
+ GroupAdd: groupAdd,
+ Hostname: c.String("hostname"),
+ Image: image,
+ Interactive: c.Bool("interactive"),
+ IP6Address: c.String("ipv6"),
+ IPAddress: c.String("ip"),
+ Labels: labels,
+ LinkLocalIP: c.StringSlice("link-local-ip"),
+ LogDriver: c.String("log-driver"),
+ LogDriverOpt: c.StringSlice("log-opt"),
+ MacAddress: c.String("mac-address"),
+ Name: c.String("name"),
+ Network: c.String("network"),
+ NetworkAlias: c.StringSlice("network-alias"),
+ IpcMode: ipcMode,
+ NetMode: container.NetworkMode(c.String("network")),
+ UtsMode: utsMode,
+ PidMode: pidMode,
+ Pod: c.String("pod"),
+ Privileged: c.Bool("privileged"),
+ Publish: c.StringSlice("publish"),
+ PublishAll: c.Bool("publish-all"),
+ ReadOnlyRootfs: c.Bool("read-only"),
+ Resources: createResourceConfig{
+ BlkioWeight: blkioWeight,
+ BlkioWeightDevice: c.StringSlice("blkio-weight-device"),
+ CPUShares: c.Uint64("cpu-shares"),
+ CPUPeriod: c.Uint64("cpu-period"),
+ CPUsetCPUs: c.String("cpu-period"),
+ CPUsetMems: c.String("cpuset-mems"),
+ CPUQuota: c.Int64("cpu-quota"),
+ CPURtPeriod: c.Uint64("cpu-rt-period"),
+ CPURtRuntime: c.Int64("cpu-rt-runtime"),
+ CPUs: c.String("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: c.String("shm-size"),
+ Memory: memoryLimit,
+ MemoryReservation: memoryReservation,
+ MemorySwap: memorySwap,
+ MemorySwappiness: c.Int("memory-swappiness"),
+ KernelMemory: memoryKernel,
+ OomScoreAdj: c.Int("oom-score-adj"),
+
+ PidsLimit: c.Int64("pids-limit"),
+ Ulimit: c.StringSlice("ulimit"),
+ },
+ Rm: c.Bool("rm"),
+ ShmDir: shmDir,
+ SigProxy: c.Bool("sig-proxy"),
+ StopSignal: c.String("stop-signal"),
+ StopTimeout: c.Int64("stop-timeout"),
+ StorageOpts: c.StringSlice("storage-opt"),
+ Sysctl: sysctl,
+ Tmpfs: c.StringSlice("tmpfs"),
+ Tty: tty,
+ User: uid,
+ Group: gid,
+ Volumes: c.StringSlice("volume"),
+ WorkDir: c.String("workdir"),
+ }
+
+ if !config.Privileged {
+ if err := parseSecurityOpt(config, c.StringSlice("security-opt")); err != nil {
+ return nil, err
+ }
+ }
+ config.SecurityOpts = c.StringSlice("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
+}
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2024-11-13 22:29:08 +0000