// TestNonRootReadInfo tests that non-root users that can do rkt list, rkt image list.
func TestNonRootReadInfo(t *testing.T) {
if !common.SupportsUserNS() {
t.Skip("User namespaces are not supported on this host.")
}
if err := checkUserNS(); err != nil {
t.Skip("User namespaces don't work on this host.")
}
ctx := testutils.NewRktRunCtx()
defer ctx.Cleanup()
gid, err := common.LookupGid(common.RktGroup)
if err != nil {
t.Skipf("Skipping the test because there's no %q group", common.RktGroup)
}
if err := ctx.SetupDataDir(); err != nil {
t.Fatalf("failed to setup data dir: %v", err)
}
// Launch some pods, this creates the environment for later testing.
imgs := []struct {
name string
msg string
exitCode string
imgFile string
}{
{name: "inspect-1", msg: "foo-1", exitCode: "1"},
{name: "inspect-2", msg: "foo-2", exitCode: "2"},
{name: "inspect-3", msg: "foo-3", exitCode: "3"},
}
for i, img := range imgs {
imgName := fmt.Sprintf("rkt-%s.aci", img.name)
imgs[i].imgFile = patchTestACI(imgName, fmt.Sprintf("--name=%s", img.name), fmt.Sprintf("--exec=/inspect --print-msg=%s --exit-code=%s", img.msg, img.exitCode))
defer os.Remove(imgs[i].imgFile)
}
runCmds := []string{
// Run with overlay, without private-users.
fmt.Sprintf("%s --insecure-options=image run --mds-register=false %s", ctx.Cmd(), imgs[0].imgFile),
// Run without overlay, without private-users.
fmt.Sprintf("%s --insecure-options=image run --no-overlay --mds-register=false %s", ctx.Cmd(), imgs[1].imgFile),
// Run without overlay, with private-users.
fmt.Sprintf("%s --insecure-options=image run --no-overlay --private-users --mds-register=false %s", ctx.Cmd(), imgs[2].imgFile),
}
for i, cmd := range runCmds {
t.Logf("#%d: Running %s", i, cmd)
runRktAndCheckOutput(t, cmd, imgs[i].msg, false)
}
imgListCmd := fmt.Sprintf("%s image list", ctx.Cmd())
t.Logf("Running %s", imgListCmd)
runRktAsGidAndCheckOutput(t, imgListCmd, "inspect-", false, gid)
}
func TestUserns(t *testing.T) {
if !common.SupportsUserNS() {
t.Skip("User namespaces are not supported on this host.")
}
if err := checkUserNS(); err != nil {
t.Skip("User namespaces don't work on this host.")
}
// we need CAP_SYS_PTRACE to read /proc/1/root
image := patchTestACI("rkt-inspect-stat.aci", "--exec=/inspect --stat-file", "--capability=CAP_SYS_PTRACE")
defer os.Remove(image)
ctx := testutils.NewRktRunCtx()
defer ctx.Cleanup()
for i, tt := range usernsTests {
for _, userNsOpt := range []string{"", "--private-users"} {
runCmd := tt.runCmd
runCmd = strings.Replace(runCmd, "^IMAGE^", image, -1)
runCmd = strings.Replace(runCmd, "^RKT_BIN^", ctx.Cmd(), -1)
runCmd = strings.Replace(runCmd, "^FILE^", tt.file, -1)
runCmd = strings.Replace(runCmd, "^USERNS^", userNsOpt, -1)
if userNsOpt == "--private-users" {
t.Logf("Running 'run' test #%v: %v", i, runCmd)
child, err := gexpect.Spawn(runCmd)
if err != nil {
t.Fatalf("Cannot exec rkt #%v: %v", i, err)
}
expectedResult := tt.file + `: mode: (\w+.\w+.\w+)`
result, _, err := expectRegexWithOutput(child, expectedResult)
if err != nil || result[1] != tt.expectMode {
t.Fatalf("Expected %q but not found: %v", tt.expectMode, result)
}
expectedResult = tt.file + `: user: (\d)`
result, _, err = expectRegexWithOutput(child, expectedResult)
if err != nil || result[0] == tt.expectUid {
t.Fatalf("Expected %q but not found: %v", tt.expectUid, result)
}
expectedResult = tt.file + `: group: (\d)`
result, _, err = expectRegexWithOutput(child, expectedResult)
if err != nil || result[0] == tt.expectGid {
t.Fatalf("Expected %q but not found: %v", tt.expectGid, result)
}
err = child.Wait()
if err != nil {
t.Fatalf("rkt didn't terminate correctly: %v", err)
}
ctx.Reset()
}
}
}
}
func TestUserns(t *testing.T) {
if !common.SupportsUserNS() {
t.Skip("User namespaces are not supported on this host.")
}
if err := checkUserNS(); err != nil {
t.Skip("User namespaces don't work on this host.")
}
image := patchTestACI("rkt-inspect-stat.aci", "--exec=/inspect --stat-file")
defer os.Remove(image)
ctx := testutils.NewRktRunCtx()
defer ctx.Cleanup()
for i, tt := range usernsTests {
for _, userNsOpt := range []string{"", "--private-users"} {
runCmd := tt.runCmd
runCmd = strings.Replace(runCmd, "^IMAGE^", image, -1)
runCmd = strings.Replace(runCmd, "^RKT_BIN^", ctx.Cmd(), -1)
runCmd = strings.Replace(runCmd, "^FILE^", tt.file, -1)
runCmd = strings.Replace(runCmd, "^USERNS^", userNsOpt, -1)
t.Logf("Running 'run' test #%v: %v", i, runCmd)
child, err := gexpect.Spawn(runCmd)
if err != nil {
t.Fatalf("Cannot exec rkt #%v: %v", i, err)
}
err = expectWithOutput(child, tt.file+": mode: "+tt.expectMode)
if err != nil {
t.Fatalf("Expected %q but not found: %v", tt.expectMode, err)
}
err = expectWithOutput(child, tt.file+": user: "******"Expected %q but not found: %v", tt.expectUid, err)
}
err = expectWithOutput(child, tt.file+": group: "+tt.expectGid)
if err != nil {
t.Fatalf("Expected %q but not found: %v", tt.expectGid, err)
}
err = child.Wait()
if err != nil {
t.Fatalf("rkt didn't terminate correctly: %v", err)
}
ctx.Reset()
}
}
}
func TestExport(t *testing.T) {
testCases := []ExportTestCase{noOverlaySimpleTest}
// Need to do both checks
if common.SupportsUserNS() && checkUserNS() == nil {
testCases = append(testCases, userNS)
}
if common.SupportsOverlay() {
testCases = append(testCases, overlaySimpleTest)
testCases = append(testCases, overlaySimulateReboot)
}
NewTestExport(testCases...).Execute(t)
}
func TestExport(t *testing.T) {
ctx := testutils.NewRktRunCtx()
defer ctx.Cleanup()
overlay := (common.SupportsOverlay() == nil)
userns := (common.SupportsUserNS() && checkUserNS() == nil && !TestedFlavor.Kvm)
for name, testCase := range exportTestCases {
if testCase.NeedsOverlay && !overlay {
t.Logf("TestExport/%v needs overlay, skipping", name)
continue
}
if testCase.NeedsUserNS && !userns {
t.Logf("TestExport/%v needs userns, skipping", name)
continue
}
t.Logf("TestExport/%v", name)
testCase.Execute(t, ctx)
}
}
func runRun(cmd *cobra.Command, args []string) (exit int) {
privateUsers := uid.NewBlankUidRange()
err := parseApps(&rktApps, args, cmd.Flags(), true)
if err != nil {
stderr("run: error parsing app image arguments: %v", err)
return 1
}
if flagPrivateUsers {
if !common.SupportsUserNS() {
stderr("run: --private-users is not supported, kernel compiled without user namespace support")
return 1
}
privateUsers.SetRandomUidRange(uid.DefaultRangeCount)
}
if len(flagPorts) > 0 && !flagPrivateNet.Any() {
stderr("--port flag requires --private-net")
return 1
}
if len(flagPodManifest) > 0 && (len(flagVolumes) > 0 || len(flagPorts) > 0 || flagInheritEnv || !flagExplicitEnv.IsEmpty() || rktApps.Count() > 0 || flagLocal) {
stderr("conflicting flags set with --pod-manifest (see --help)")
return 1
}
if globalFlags.Dir == "" {
log.Printf("dir unset - using temporary directory")
var err error
globalFlags.Dir, err = ioutil.TempDir("", "rkt")
if err != nil {
stderr("error creating temporary directory: %v", err)
return 1
}
}
if flagInteractive && rktApps.Count() > 1 {
stderr("run: interactive option only supports one image")
return 1
}
if rktApps.Count() < 1 && len(flagPodManifest) == 0 {
stderr("run: must provide at least one image or specify the pod manifest")
return 1
}
s, err := store.NewStore(globalFlags.Dir)
if err != nil {
stderr("run: cannot open store: %v", err)
return 1
}
config, err := getConfig()
if err != nil {
stderr("run: cannot get configuration: %v", err)
return 1
}
fn := &finder{
imageActionData: imageActionData{
s: s,
headers: config.AuthPerHost,
dockerAuth: config.DockerCredentialsPerRegistry,
insecureSkipVerify: globalFlags.InsecureSkipVerify,
debug: globalFlags.Debug,
},
local: flagLocal,
withDeps: false,
}
s1img, err := getStage1Hash(s, flagStage1Image)
if err != nil {
stderr("%v", err)
return 1
}
fn.ks = getKeystore()
fn.withDeps = true
if err := fn.findImages(&rktApps); err != nil {
stderr("%v", err)
return 1
}
p, err := newPod()
if err != nil {
stderr("Error creating new pod: %v", err)
return 1
}
// if requested, write out pod UUID early so "rkt rm" can
// clean it up even if something goes wrong
if flagUUIDFileSave != "" {
if err := writeUUIDToFile(p.uuid, flagUUIDFileSave); err != nil {
stderr("Error saving pod UUID to file: %v", err)
return 1
}
}
processLabel, mountLabel, err := label.InitLabels(nil)
if err != nil {
stderr("Error initialising SELinux: %v", err)
return 1
}
cfg := stage0.CommonConfig{
MountLabel: mountLabel,
ProcessLabel: processLabel,
Store: s,
Stage1Image: *s1img,
UUID: p.uuid,
Debug: globalFlags.Debug,
}
pcfg := stage0.PrepareConfig{
CommonConfig: cfg,
UseOverlay: !flagNoOverlay && common.SupportsOverlay(),
PrivateUsers: privateUsers,
}
if len(flagPodManifest) > 0 {
pcfg.PodManifest = flagPodManifest
} else {
pcfg.Volumes = []types.Volume(flagVolumes)
pcfg.Ports = []types.ExposedPort(flagPorts)
pcfg.InheritEnv = flagInheritEnv
pcfg.ExplicitEnv = flagExplicitEnv.Strings()
pcfg.Apps = &rktApps
}
err = stage0.Prepare(pcfg, p.path(), p.uuid)
if err != nil {
stderr("run: error setting up stage0: %v", err)
return 1
}
// get the lock fd for run
lfd, err := p.Fd()
if err != nil {
stderr("Error getting pod lock fd: %v", err)
return 1
}
// skip prepared by jumping directly to run, we own this pod
if err := p.xToRun(); err != nil {
stderr("run: unable to transition to run: %v", err)
return 1
}
rcfg := stage0.RunConfig{
CommonConfig: cfg,
PrivateNet: flagPrivateNet,
LockFd: lfd,
Interactive: flagInteractive,
MDSRegister: flagMDSRegister,
LocalConfig: globalFlags.LocalConfigDir,
}
apps, err := p.getApps()
if err != nil {
stderr("run: cannot get the appList in the pod manifest: %v", err)
return 1
}
rcfg.Apps = apps
stage0.Run(rcfg, p.path()) // execs, never returns
return 1
}
func runPrepare(cmd *cobra.Command, args []string) (exit int) {
var err error
origStdout := os.Stdout
privateUsers := uid.NewBlankUidRange()
if flagQuiet {
if os.Stdout, err = os.Open("/dev/null"); err != nil {
stderr("prepare: unable to open /dev/null")
return 1
}
}
if flagPrivateUsers {
if !common.SupportsUserNS() {
stderr("prepare: --private-users is not supported, kernel compiled without user namespace support")
return 1
}
privateUsers.SetRandomUidRange(uid.DefaultRangeCount)
}
if err = parseApps(&rktApps, args, cmd.Flags(), true); err != nil {
stderr("prepare: error parsing app image arguments: %v", err)
return 1
}
if len(flagPodManifest) > 0 && (len(flagVolumes) > 0 || len(flagPorts) > 0 || flagInheritEnv || !flagExplicitEnv.IsEmpty() || flagLocal) {
stderr("prepare: conflicting flags set with --pod-manifest (see --help)")
return 1
}
if rktApps.Count() < 1 && len(flagPodManifest) == 0 {
stderr("prepare: must provide at least one image or specify the pod manifest")
return 1
}
if globalFlags.Dir == "" {
log.Printf("dir unset - using temporary directory")
globalFlags.Dir, err = ioutil.TempDir("", "rkt")
if err != nil {
stderr("prepare: error creating temporary directory: %v", err)
return 1
}
}
s, err := store.NewStore(globalFlags.Dir)
if err != nil {
stderr("prepare: cannot open store: %v", err)
return 1
}
config, err := getConfig()
if err != nil {
stderr("prepare: cannot get configuration: %v", err)
return 1
}
fn := &finder{
imageActionData: imageActionData{
s: s,
headers: config.AuthPerHost,
dockerAuth: config.DockerCredentialsPerRegistry,
insecureSkipVerify: globalFlags.InsecureSkipVerify,
debug: globalFlags.Debug,
},
local: flagLocal,
withDeps: false,
}
s1img, err := getStage1Hash(s, flagStage1Image)
if err != nil {
stderr("prepare: %v", err)
return 1
}
fn.ks = getKeystore()
fn.withDeps = true
if err := fn.findImages(&rktApps); err != nil {
stderr("%v", err)
return 1
}
p, err := newPod()
if err != nil {
stderr("prepare: error creating new pod: %v", err)
return 1
}
cfg := stage0.CommonConfig{
Store: s,
Stage1Image: *s1img,
UUID: p.uuid,
Debug: globalFlags.Debug,
}
pcfg := stage0.PrepareConfig{
CommonConfig: cfg,
UseOverlay: !flagNoOverlay && common.SupportsOverlay(),
PrivateUsers: privateUsers,
}
if len(flagPodManifest) > 0 {
pcfg.PodManifest = flagPodManifest
} else {
pcfg.Volumes = []types.Volume(flagVolumes)
pcfg.Ports = []types.ExposedPort(flagPorts)
pcfg.InheritEnv = flagInheritEnv
pcfg.ExplicitEnv = flagExplicitEnv.Strings()
pcfg.Apps = &rktApps
}
if err = stage0.Prepare(pcfg, p.path(), p.uuid); err != nil {
stderr("prepare: error setting up stage0: %v", err)
return 1
}
if err := p.sync(); err != nil {
stderr("prepare: error syncing pod data: %v", err)
return 1
}
if err := p.xToPrepared(); err != nil {
stderr("prepare: error transitioning to prepared: %v", err)
return 1
}
os.Stdout = origStdout // restore output in case of --quiet
stdout("%s", p.uuid.String())
return 0
}
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 1
}
if flagStoreOnly && flagNoStore {
stderr.Print("both --store-only and --no-store specified")
return 1
}
if flagPrivateUsers {
if !common.SupportsUserNS() {
stderr.Print("--private-users is not supported, kernel compiled without user namespace support")
return 1
}
privateUsers.SetRandomUidRange(user.DefaultRangeCount)
}
if len(flagPorts) > 0 && flagNet.None() {
stderr.Print("--port flag does not work with 'none' networking")
return 1
}
if len(flagPorts) > 0 && flagNet.Host() {
stderr.Print("--port flag does not work with 'host' networking")
return 1
}
if flagMDSRegister && flagNet.None() {
stderr.Print("--mds-register flag does not work with --net=none. Please use 'host', 'default' or an equivalent network")
return 1
}
if len(flagPodManifest) > 0 && (len(flagPorts) > 0 || rktApps.Count() > 0 || flagStoreOnly || flagNoStore ||
flagInheritEnv || !flagExplicitEnv.IsEmpty() || !flagEnvFromFile.IsEmpty() ||
(*appsVolume)(&rktApps).String() != "" || (*appMount)(&rktApps).String() != "" || (*appExec)(&rktApps).String() != "" ||
(*appUser)(&rktApps).String() != "" || (*appGroup)(&rktApps).String() != "" ||
(*appCapsRetain)(&rktApps).String() != "" || (*appCapsRemove)(&rktApps).String() != "") {
stderr.Print("conflicting flags set with --pod-manifest (see --help)")
return 1
}
if flagInteractive && rktApps.Count() > 1 {
stderr.Print("interactive option only supports one image")
return 1
}
if rktApps.Count() < 1 && len(flagPodManifest) == 0 {
stderr.Print("must provide at least one image or specify the pod manifest")
return 1
}
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
}
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 1
}
p, err := newPod()
if err != nil {
stderr.PrintE("error creating new pod", err)
return 1
}
// if requested, write out pod UUID early so "rkt rm" can
// clean it up even if something goes wrong
if flagUUIDFileSave != "" {
if err := writeUUIDToFile(p.uuid, flagUUIDFileSave); err != nil {
stderr.PrintE("error saving pod UUID to file", err)
return 1
}
}
processLabel, mountLabel, err := label.InitLabels([]string{"mcsdir:/var/run/rkt/mcs"})
if err != nil {
stderr.PrintE("error initialising SELinux", err)
return 1
}
p.mountLabel = mountLabel
cfg := stage0.CommonConfig{
MountLabel: mountLabel,
ProcessLabel: processLabel,
Store: s,
TreeStore: ts,
Stage1Image: *s1img,
UUID: p.uuid,
Debug: globalFlags.Debug,
}
pcfg := stage0.PrepareConfig{
CommonConfig: &cfg,
UseOverlay: !flagNoOverlay && common.SupportsOverlay() && common.FSSupportsOverlay(getDataDir()),
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 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.xToRun(); 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
}
rcfg := stage0.RunConfig{
CommonConfig: &cfg,
Net: flagNet,
LockFd: lfd,
Interactive: flagInteractive,
DNS: flagDNS,
DNSSearch: flagDNSSearch,
DNSOpt: flagDNSOpt,
MDSRegister: flagMDSRegister,
LocalConfig: globalFlags.LocalConfigDir,
RktGid: rktgid,
Hostname: flagHostname,
}
apps, err := p.getApps()
if err != nil {
stderr.PrintE("cannot get the appList in the pod manifest", err)
return 1
}
rcfg.Apps = apps
stage0.Run(rcfg, p.path(), getDataDir()) // execs, never returns
return 1
}
func runRun(cmd *cobra.Command, args []string) (exit int) {
privateUsers := uid.NewBlankUidRange()
err := parseApps(&rktApps, args, cmd.Flags(), true)
if err != nil {
stderr("run: error parsing app image arguments: %v", err)
return 1
}
if flagStoreOnly && flagNoStore {
stderr("both --store-only and --no-store specified")
return 1
}
if flagPrivateUsers {
if !common.SupportsUserNS() {
stderr("run: --private-users is not supported, kernel compiled without user namespace support")
return 1
}
privateUsers.SetRandomUidRange(uid.DefaultRangeCount)
}
if len(flagPorts) > 0 && flagNet.None() {
stderr("--port flag does not work with 'none' networking")
return 1
}
if len(flagPorts) > 0 && flagNet.Host() {
stderr("--port flag does not work with 'host' networking")
return 1
}
if flagMDSRegister && flagNet.None() {
stderr("--mds-register flag does not work with --net=none. Please use 'host', 'default' or an equivalent network")
return 1
}
if len(flagPodManifest) > 0 && (len(flagPorts) > 0 || flagInheritEnv || !flagExplicitEnv.IsEmpty() || rktApps.Count() > 0 || flagStoreOnly || flagNoStore) {
stderr("conflicting flags set with --pod-manifest (see --help)")
return 1
}
if flagInteractive && rktApps.Count() > 1 {
stderr("run: interactive option only supports one image")
return 1
}
if rktApps.Count() < 1 && len(flagPodManifest) == 0 {
stderr("run: must provide at least one image or specify the pod manifest")
return 1
}
s, err := store.NewStore(globalFlags.Dir)
if err != nil {
stderr("run: cannot open store: %v", err)
return 1
}
config, err := getConfig()
if err != nil {
stderr("run: cannot get configuration: %v", err)
return 1
}
fn := &finder{
imageActionData: imageActionData{
s: s,
headers: config.AuthPerHost,
dockerAuth: config.DockerCredentialsPerRegistry,
insecureSkipVerify: globalFlags.InsecureSkipVerify,
debug: globalFlags.Debug,
},
storeOnly: flagStoreOnly,
noStore: flagNoStore,
withDeps: false,
}
s1img, err := getStage1Hash(s, cmd)
if err != nil {
stderr("%v", err)
return 1
}
fn.ks = getKeystore()
fn.withDeps = true
if err := fn.findImages(&rktApps); err != nil {
stderr("%v", err)
return 1
}
p, err := newPod()
if err != nil {
stderr("Error creating new pod: %v", err)
return 1
}
// if requested, write out pod UUID early so "rkt rm" can
// clean it up even if something goes wrong
if flagUUIDFileSave != "" {
if err := writeUUIDToFile(p.uuid, flagUUIDFileSave); err != nil {
stderr("Error saving pod UUID to file: %v", err)
return 1
}
}
processLabel, mountLabel, err := label.InitLabels(nil)
if err != nil {
stderr("Error initialising SELinux: %v", err)
return 1
}
cfg := stage0.CommonConfig{
MountLabel: mountLabel,
ProcessLabel: processLabel,
Store: s,
Stage1Image: *s1img,
UUID: p.uuid,
Debug: globalFlags.Debug,
}
pcfg := stage0.PrepareConfig{
CommonConfig: cfg,
UseOverlay: !flagNoOverlay && common.SupportsOverlay(),
PrivateUsers: privateUsers,
}
if len(flagPodManifest) > 0 {
pcfg.PodManifest = flagPodManifest
} else {
pcfg.Ports = []types.ExposedPort(flagPorts)
pcfg.InheritEnv = flagInheritEnv
pcfg.ExplicitEnv = flagExplicitEnv.Strings()
pcfg.Apps = &rktApps
}
if globalFlags.Debug {
stage0.InitDebug()
}
keyLock, err := lock.SharedKeyLock(lockDir(), common.PrepareLock)
if err != nil {
stderr("rkt: cannot get shared prepare lock: %v", err)
return 1
}
err = stage0.Prepare(pcfg, p.path(), p.uuid)
if err != nil {
stderr("run: error setting up stage0: %v", err)
keyLock.Close()
return 1
}
keyLock.Close()
// get the lock fd for run
lfd, err := p.Fd()
if err != nil {
stderr("Error getting pod lock fd: %v", err)
return 1
}
// skip prepared by jumping directly to run, we own this pod
if err := p.xToRun(); err != nil {
stderr("run: unable to transition to run: %v", err)
return 1
}
rktgid, err := common.LookupGid(common.RktGroup)
if err != nil {
stderr("run: group %q not found, will use default gid when rendering images", common.RktGroup)
rktgid = -1
}
rcfg := stage0.RunConfig{
CommonConfig: cfg,
Net: flagNet,
LockFd: lfd,
Interactive: flagInteractive,
MDSRegister: flagMDSRegister,
LocalConfig: globalFlags.LocalConfigDir,
RktGid: rktgid,
}
apps, err := p.getApps()
if err != nil {
stderr("run: cannot get the appList in the pod manifest: %v", err)
return 1
}
rcfg.Apps = apps
stage0.Run(rcfg, p.path(), globalFlags.Dir) // execs, never returns
return 1
}
func runPrepare(cmd *cobra.Command, args []string) (exit int) {
var err error
origStdout := os.Stdout
privateUsers := uid.NewBlankUidRange()
if flagQuiet {
if os.Stdout, err = os.Open("/dev/null"); err != nil {
stderr("prepare: unable to open /dev/null: %v", err)
return 1
}
}
if flagStoreOnly && flagNoStore {
stderr("both --store-only and --no-store specified")
return 1
}
if flagPrivateUsers {
if !common.SupportsUserNS() {
stderr("prepare: --private-users is not supported, kernel compiled without user namespace support")
return 1
}
privateUsers.SetRandomUidRange(uid.DefaultRangeCount)
}
if err = parseApps(&rktApps, args, cmd.Flags(), true); err != nil {
stderr("prepare: error parsing app image arguments: %v", err)
return 1
}
if len(flagPodManifest) > 0 && (len(flagPorts) > 0 || flagInheritEnv || !flagExplicitEnv.IsEmpty() || flagStoreOnly || flagNoStore) {
stderr("prepare: conflicting flags set with --pod-manifest (see --help)")
return 1
}
if rktApps.Count() < 1 && len(flagPodManifest) == 0 {
stderr("prepare: must provide at least one image or specify the pod manifest")
return 1
}
s, err := store.NewStore(getDataDir())
if err != nil {
stderr("prepare: cannot open store: %v", err)
return 1
}
config, err := getConfig()
if err != nil {
stderr("prepare: cannot get configuration: %v", err)
return 1
}
s1img, err := getStage1Hash(s, cmd)
if err != nil {
stderr("prepare: %v", err)
return 1
}
fn := &image.Finder{
S: s,
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("prepare: %v", err)
return 1
}
p, err := newPod()
if err != nil {
stderr("prepare: error creating new pod: %v", err)
return 1
}
cfg := stage0.CommonConfig{
Store: s,
Stage1Image: *s1img,
UUID: p.uuid,
Debug: globalFlags.Debug,
}
pcfg := stage0.PrepareConfig{
CommonConfig: &cfg,
UseOverlay: !flagNoOverlay && common.SupportsOverlay(),
PrivateUsers: privateUsers,
}
if len(flagPodManifest) > 0 {
pcfg.PodManifest = flagPodManifest
} else {
pcfg.Ports = []types.ExposedPort(flagPorts)
pcfg.InheritEnv = flagInheritEnv
pcfg.ExplicitEnv = flagExplicitEnv.Strings()
pcfg.Apps = &rktApps
}
if globalFlags.Debug {
stage0.InitDebug()
}
keyLock, err := lock.SharedKeyLock(lockDir(), common.PrepareLock)
if err != nil {
stderr("rkt: cannot get shared prepare lock: %v", err)
return 1
}
if err = stage0.Prepare(pcfg, p.path(), p.uuid); err != nil {
stderr("prepare: error setting up stage0: %v", err)
keyLock.Close()
return 1
}
keyLock.Close()
if err := p.sync(); err != nil {
stderr("prepare: error syncing pod data: %v", err)
return 1
}
if err := p.xToPrepared(); err != nil {
stderr("prepare: error transitioning to prepared: %v", err)
return 1
}
os.Stdout = origStdout // restore output in case of --quiet
stdout("%s", p.uuid.String())
return 0
}
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 TestAppUserGroup(t *testing.T) {
imageDummy := patchTestACI("rkt-inspect-dummy.aci", "--name=dummy")
defer os.Remove(imageDummy)
supportsUserNS := common.SupportsUserNS() && checkUserNS() == nil
for _, tt := range []struct {
imageParams []string
rktParams string
expected string
}{
{
expected: "User: uid=0 euid=0 gid=0 egid=0",
},
{
rktParams: "--user=200",
expected: "User: uid=200 euid=200 gid=0 egid=0",
},
{
rktParams: "--group=300",
expected: "User: uid=0 euid=0 gid=300 egid=300",
},
{
rktParams: "--user=200 --group=300",
expected: "User: uid=200 euid=200 gid=300 egid=300",
},
{
rktParams: "--user=user1 --group=300",
expected: "User: uid=1000 euid=1000 gid=300 egid=300",
},
{
rktParams: "--user=200 --group=group1",
expected: "User: uid=200 euid=200 gid=100 egid=100",
},
{
imageParams: []string{"--user=400", "--group=500"},
expected: "User: uid=400 euid=400 gid=500 egid=500",
},
{
imageParams: []string{"--user=400", "--group=500"},
rktParams: "--user=200",
expected: "User: uid=200 euid=200 gid=500 egid=500",
},
{
imageParams: []string{"--user=400", "--group=500"},
rktParams: "--group=300",
expected: "User: uid=400 euid=400 gid=300 egid=300",
},
{
imageParams: []string{"--user=400", "--group=500"},
rktParams: "--user=200 --group=300",
expected: "User: uid=200 euid=200 gid=300 egid=300",
},
{
imageParams: []string{"--user=400", "--group=500"},
rktParams: "--user=user1 --group=group1",
expected: "User: uid=1000 euid=1000 gid=100 egid=100",
},
{
imageParams: []string{"--user=root", "--group=root"},
expected: "User: uid=0 euid=0 gid=0 egid=0",
},
{
rktParams: "--user=root --group=root",
expected: "User: uid=0 euid=0 gid=0 egid=0",
},
{
rktParams: "--user=/inspect --group=/inspect",
expected: "User: uid=0 euid=0 gid=0 egid=0",
},
} {
func() {
ctx := testutils.NewRktRunCtx()
defer ctx.Cleanup()
tt.imageParams = append(tt.imageParams, "--exec=/inspect --print-user")
image := patchTestACI("rkt-inspect-user-group.aci", tt.imageParams...)
defer os.Remove(image)
userNSOpts := []string{""}
if supportsUserNS {
userNSOpts = append(userNSOpts, "--private-users --no-overlay")
}
for _, userNSOpt := range userNSOpts {
// run the user/group overriden app first
rktCmd := fmt.Sprintf(
"%s --debug --insecure-options=image run %s %s %s %s",
ctx.Cmd(),
userNSOpt,
image, tt.rktParams,
imageDummy,
)
runRktAndCheckOutput(t, rktCmd, tt.expected, false)
// run the user/group overriden app last
rktCmd = fmt.Sprintf(
"%s --debug --insecure-options=image run %s %s %s %s",
ctx.Cmd(),
userNSOpt,
imageDummy,
image, tt.rktParams,
)
runRktAndCheckOutput(t, rktCmd, tt.expected, false)
}
}()
}
}
