func runPrepare(cmd *cobra.Command, args []string) (exit int) {
var err error
origStdout := os.Stdout
privateUsers := user.NewBlankUidRange()
if flagQuiet {
if os.Stdout, err = os.Open("/dev/null"); err != nil {
stderr.PrintE("unable to open /dev/null", err)
return 254
}
}
if flagStoreOnly && flagNoStore {
stderr.Print("both --store-only and --no-store specified")
return 254
}
if flagPrivateUsers {
if !common.SupportsUserNS() {
stderr.Print("--private-users is not supported, kernel compiled without user namespace support")
return 254
}
privateUsers.SetRandomUidRange(user.DefaultRangeCount)
}
if err = parseApps(&rktApps, args, cmd.Flags(), true); err != nil {
stderr.PrintE("error parsing app image arguments", err)
return 254
}
if len(flagPodManifest) > 0 && (rktApps.Count() > 0 ||
(*appsVolume)(&rktApps).String() != "" || (*appMount)(&rktApps).String() != "" ||
len(flagPorts) > 0 || flagStoreOnly || flagNoStore ||
flagInheritEnv || !flagExplicitEnv.IsEmpty() || !flagEnvFromFile.IsEmpty()) {
stderr.Print("conflicting flags set with --pod-manifest (see --help)")
return 254
}
if rktApps.Count() < 1 && len(flagPodManifest) == 0 {
stderr.Print("must provide at least one image or specify the pod manifest")
return 254
}
s, err := imagestore.NewStore(storeDir())
if err != nil {
stderr.PrintE("cannot open store", err)
return 254
}
ts, err := treestore.NewStore(treeStoreDir(), s)
if err != nil {
stderr.PrintE("cannot open treestore", err)
return 254
}
config, err := getConfig()
if err != nil {
stderr.PrintE("cannot get configuration", err)
return 254
}
s1img, err := getStage1Hash(s, ts, config)
if err != nil {
stderr.Error(err)
return 254
}
fn := &image.Finder{
S: s,
Ts: ts,
Ks: getKeystore(),
Headers: config.AuthPerHost,
DockerAuth: config.DockerCredentialsPerRegistry,
InsecureFlags: globalFlags.InsecureFlags,
Debug: globalFlags.Debug,
TrustKeysFromHTTPS: globalFlags.TrustKeysFromHTTPS,
StoreOnly: flagStoreOnly,
NoStore: flagNoStore,
WithDeps: true,
}
if err := fn.FindImages(&rktApps); err != nil {
stderr.PrintE("error finding images", err)
return 254
}
p, err := pkgPod.NewPod(getDataDir())
if err != nil {
stderr.PrintE("error creating new pod", err)
return 254
}
cfg := stage0.CommonConfig{
DataDir: getDataDir(),
Store: s,
TreeStore: ts,
Stage1Image: *s1img,
UUID: p.UUID,
Debug: globalFlags.Debug,
}
ovlOk := true
if err := common.PathSupportsOverlay(getDataDir()); err != nil {
if oerr, ok := err.(common.ErrOverlayUnsupported); ok {
stderr.Printf("disabling overlay support: %q", oerr.Error())
ovlOk = false
} else {
stderr.PrintE("error determining overlay support", err)
return 254
}
}
pcfg := stage0.PrepareConfig{
CommonConfig: &cfg,
UseOverlay: !flagNoOverlay && ovlOk,
PrivateUsers: privateUsers,
SkipTreeStoreCheck: globalFlags.InsecureFlags.SkipOnDiskCheck(),
}
if len(flagPodManifest) > 0 {
pcfg.PodManifest = flagPodManifest
} else {
pcfg.Ports = []types.ExposedPort(flagPorts)
pcfg.InheritEnv = flagInheritEnv
pcfg.ExplicitEnv = flagExplicitEnv.Strings()
pcfg.EnvFromFile = flagEnvFromFile.Strings()
pcfg.Apps = &rktApps
}
if globalFlags.Debug {
stage0.InitDebug()
}
keyLock, err := lock.SharedKeyLock(lockDir(), common.PrepareLock)
if err != nil {
stderr.PrintE("cannot get shared prepare lock", err)
return 254
}
if err = stage0.Prepare(pcfg, p.Path(), p.UUID); err != nil {
stderr.PrintE("error setting up stage0", err)
keyLock.Close()
return 254
}
keyLock.Close()
if err := p.Sync(); err != nil {
stderr.PrintE("error syncing pod data", err)
return 254
}
if err := p.ToPrepared(); err != nil {
stderr.PrintE("error transitioning to prepared", err)
return 254
}
os.Stdout = origStdout // restore output in case of --quiet
stdout.Printf("%s", p.UUID.String())
return 0
}
func runAppSandbox(cmd *cobra.Command, args []string) int {
s, err := imagestore.NewStore(storeDir())
if err != nil {
stderr.PrintE("cannot open store", err)
return 1
}
ts, err := treestore.NewStore(treeStoreDir(), s)
if err != nil {
stderr.PrintE("cannot open treestore", err)
return 1
}
config, err := getConfig()
if err != nil {
stderr.PrintE("cannot get configuration", err)
return 1
}
s1img, err := getStage1Hash(s, ts, config)
if err != nil {
stderr.Error(err)
return 1
}
p, err := pod.NewPod(getDataDir())
if err != nil {
stderr.PrintE("error creating new pod", err)
return 1
}
if flagUUIDFileSave != "" {
if err := pod.WriteUUIDToFile(p.UUID, flagUUIDFileSave); err != nil {
stderr.PrintE("error saving pod UUID to file", err)
return 1
}
}
processLabel, mountLabel, err := label.InitLabels("/var/run/rkt/mcs", []string{})
if err != nil {
stderr.PrintE("error initialising SELinux", err)
return 1
}
p.MountLabel = mountLabel
cfg := stage0.CommonConfig{
DataDir: getDataDir(),
MountLabel: mountLabel,
ProcessLabel: processLabel,
Store: s,
TreeStore: ts,
Stage1Image: *s1img,
UUID: p.UUID,
Debug: globalFlags.Debug,
Mutable: true,
}
ovlOk := true
if err := common.PathSupportsOverlay(getDataDir()); err != nil {
if oerr, ok := err.(common.ErrOverlayUnsupported); ok {
stderr.Printf("disabling overlay support: %q", oerr.Error())
ovlOk = false
} else {
stderr.PrintE("error determining overlay support", err)
return 1
}
}
useOverlay := !flagNoOverlay && ovlOk
pcfg := stage0.PrepareConfig{
CommonConfig: &cfg,
UseOverlay: useOverlay,
PrivateUsers: user.NewBlankUidRange(),
SkipTreeStoreCheck: globalFlags.InsecureFlags.SkipOnDiskCheck(),
Apps: &rktApps,
Ports: []types.ExposedPort(flagAppPorts),
UserAnnotations: parseAnnotations(&flagAnnotations),
UserLabels: parseLabels(&flagLabels),
}
if globalFlags.Debug {
stage0.InitDebug()
}
keyLock, err := lock.SharedKeyLock(lockDir(), common.PrepareLock)
if err != nil {
stderr.PrintE("cannot get shared prepare lock", err)
return 1
}
err = stage0.Prepare(pcfg, p.Path(), p.UUID)
if err != nil {
stderr.PrintE("error setting up stage0", err)
keyLock.Close()
return 1
}
keyLock.Close()
// get the lock fd for run
lfd, err := p.Fd()
if err != nil {
stderr.PrintE("error getting pod lock fd", err)
return 1
}
// skip prepared by jumping directly to run, we own this pod
if err := p.ToRun(); err != nil {
stderr.PrintE("unable to transition to run", err)
return 1
}
rktgid, err := common.LookupGid(common.RktGroup)
if err != nil {
stderr.Printf("group %q not found, will use default gid when rendering images", common.RktGroup)
rktgid = -1
}
DNSConfMode, DNSConfig, HostsEntries, err := parseDNSFlags(flagHostsEntries, flagDNS, flagDNSSearch, flagDNSOpt, flagDNSDomain)
if err != nil {
stderr.PrintE("error with dns flags", err)
return 1
}
rcfg := stage0.RunConfig{
CommonConfig: &cfg,
Net: flagNet,
LockFd: lfd,
Interactive: true,
DNSConfMode: DNSConfMode,
DNSConfig: DNSConfig,
MDSRegister: false,
LocalConfig: globalFlags.LocalConfigDir,
RktGid: rktgid,
Hostname: flagHostname,
InsecureCapabilities: globalFlags.InsecureFlags.SkipCapabilities(),
InsecurePaths: globalFlags.InsecureFlags.SkipPaths(),
InsecureSeccomp: globalFlags.InsecureFlags.SkipSeccomp(),
UseOverlay: useOverlay,
HostsEntries: *HostsEntries,
}
_, manifest, err := p.PodManifest()
if err != nil {
stderr.PrintE("cannot get the pod manifest", err)
return 1
}
rcfg.Apps = manifest.Apps
stage0.Run(rcfg, p.Path(), getDataDir()) // execs, never returns
return 1
}
func runRun(cmd *cobra.Command, args []string) (exit int) {
privateUsers := user.NewBlankUidRange()
err := parseApps(&rktApps, args, cmd.Flags(), true)
if err != nil {
stderr.PrintE("error parsing app image arguments", err)
return 254
}
if flagStoreOnly && flagNoStore {
stderr.Print("both --store-only and --no-store specified")
return 254
}
if flagPrivateUsers {
if !common.SupportsUserNS() {
stderr.Print("--private-users is not supported, kernel compiled without user namespace support")
return 254
}
privateUsers.SetRandomUidRange(user.DefaultRangeCount)
}
if len(flagPorts) > 0 && flagNet.None() {
stderr.Print("--port flag does not work with 'none' networking")
return 254
}
if len(flagPorts) > 0 && flagNet.Host() {
stderr.Print("--port flag does not work with 'host' networking")
return 254
}
if flagMDSRegister && flagNet.None() {
stderr.Print("--mds-register flag does not work with --net=none. Please use 'host', 'default' or an equivalent network")
return 254
}
if len(flagPodManifest) > 0 && (rktApps.Count() > 0 ||
(*appsVolume)(&rktApps).String() != "" || (*appMount)(&rktApps).String() != "" ||
len(flagPorts) > 0 || flagStoreOnly || flagNoStore ||
flagInheritEnv || !flagExplicitEnv.IsEmpty() || !flagEnvFromFile.IsEmpty()) {
stderr.Print("conflicting flags set with --pod-manifest (see --help)")
return 254
}
if flagInteractive && rktApps.Count() > 1 {
stderr.Print("interactive option only supports one image")
return 254
}
if rktApps.Count() < 1 && len(flagPodManifest) == 0 {
stderr.Print("must provide at least one image or specify the pod manifest")
return 254
}
s, err := imagestore.NewStore(storeDir())
if err != nil {
stderr.PrintE("cannot open store", err)
return 254
}
ts, err := treestore.NewStore(treeStoreDir(), s)
if err != nil {
stderr.PrintE("cannot open treestore", err)
return 254
}
config, err := getConfig()
if err != nil {
stderr.PrintE("cannot get configuration", err)
return 254
}
s1img, err := getStage1Hash(s, ts, config)
if err != nil {
stderr.Error(err)
return 254
}
fn := &image.Finder{
S: s,
Ts: ts,
Ks: getKeystore(),
Headers: config.AuthPerHost,
DockerAuth: config.DockerCredentialsPerRegistry,
InsecureFlags: globalFlags.InsecureFlags,
Debug: globalFlags.Debug,
TrustKeysFromHTTPS: globalFlags.TrustKeysFromHTTPS,
StoreOnly: flagStoreOnly,
NoStore: flagNoStore,
WithDeps: true,
}
if err := fn.FindImages(&rktApps); err != nil {
stderr.Error(err)
return 254
}
p, err := pkgPod.NewPod(getDataDir())
if err != nil {
stderr.PrintE("error creating new pod", err)
return 254
}
// if requested, write out pod UUID early so "rkt rm" can
// clean it up even if something goes wrong
if flagUUIDFileSave != "" {
if err := pkgPod.WriteUUIDToFile(p.UUID, flagUUIDFileSave); err != nil {
stderr.PrintE("error saving pod UUID to file", err)
return 254
}
}
processLabel, mountLabel, err := label.InitLabels("/var/run/rkt/mcs", []string{})
if err != nil {
stderr.PrintE("error initialising SELinux", err)
return 254
}
p.MountLabel = mountLabel
cfg := stage0.CommonConfig{
DataDir: getDataDir(),
MountLabel: mountLabel,
ProcessLabel: processLabel,
Store: s,
TreeStore: ts,
Stage1Image: *s1img,
UUID: p.UUID,
Debug: globalFlags.Debug,
Mutable: false,
}
ovlOk := true
if err := common.PathSupportsOverlay(getDataDir()); err != nil {
if oerr, ok := err.(common.ErrOverlayUnsupported); ok {
stderr.Printf("disabling overlay support: %q", oerr.Error())
ovlOk = false
} else {
stderr.PrintE("error determining overlay support", err)
return 254
}
}
useOverlay := !flagNoOverlay && ovlOk
pcfg := stage0.PrepareConfig{
CommonConfig: &cfg,
UseOverlay: useOverlay,
PrivateUsers: privateUsers,
SkipTreeStoreCheck: globalFlags.InsecureFlags.SkipOnDiskCheck(),
}
if len(flagPodManifest) > 0 {
pcfg.PodManifest = flagPodManifest
} else {
pcfg.Ports = []types.ExposedPort(flagPorts)
pcfg.InheritEnv = flagInheritEnv
pcfg.ExplicitEnv = flagExplicitEnv.Strings()
pcfg.EnvFromFile = flagEnvFromFile.Strings()
pcfg.Apps = &rktApps
}
if globalFlags.Debug {
stage0.InitDebug()
}
keyLock, err := lock.SharedKeyLock(lockDir(), common.PrepareLock)
if err != nil {
stderr.PrintE("cannot get shared prepare lock", err)
return 254
}
err = stage0.Prepare(pcfg, p.Path(), p.UUID)
if err != nil {
stderr.PrintE("error setting up stage0", err)
keyLock.Close()
return 254
}
keyLock.Close()
// get the lock fd for run
lfd, err := p.Fd()
if err != nil {
stderr.PrintE("error getting pod lock fd", err)
return 254
}
// skip prepared by jumping directly to run, we own this pod
if err := p.ToRun(); err != nil {
stderr.PrintE("unable to transition to run", err)
return 254
}
rktgid, err := common.LookupGid(common.RktGroup)
if err != nil {
stderr.Printf("group %q not found, will use default gid when rendering images", common.RktGroup)
rktgid = -1
}
DNSConfMode, DNSConfig, HostsEntries, err := parseDNSFlags(flagHostsEntries, flagDNS, flagDNSSearch, flagDNSOpt, flagDNSDomain)
if err != nil {
stderr.PrintE("error with dns flags", err)
return 254
}
rcfg := stage0.RunConfig{
CommonConfig: &cfg,
Net: flagNet,
LockFd: lfd,
Interactive: flagInteractive,
DNSConfMode: DNSConfMode,
DNSConfig: DNSConfig,
MDSRegister: flagMDSRegister,
LocalConfig: globalFlags.LocalConfigDir,
RktGid: rktgid,
Hostname: flagHostname,
InsecureCapabilities: globalFlags.InsecureFlags.SkipCapabilities(),
InsecurePaths: globalFlags.InsecureFlags.SkipPaths(),
InsecureSeccomp: globalFlags.InsecureFlags.SkipSeccomp(),
UseOverlay: useOverlay,
HostsEntries: *HostsEntries,
}
_, manifest, err := p.PodManifest()
if err != nil {
stderr.PrintE("cannot get the pod manifest", err)
return 254
}
if len(manifest.Apps) == 0 {
stderr.Print("pod must contain at least one application")
return 254
}
rcfg.Apps = manifest.Apps
stage0.Run(rcfg, p.Path(), getDataDir()) // execs, never returns
return 254
}