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-rwxr-xr-xAPI.md2
-rw-r--r--Makefile4
-rw-r--r--cmd/podman/common.go4
-rw-r--r--cmd/podman/shared/create.go18
-rw-r--r--cmd/podman/shared/intermediate.go1
-rw-r--r--cmd/podman/varlink/io.podman.varlink9
-rw-r--r--docs/podman-create.1.md8
-rw-r--r--docs/podman-run.1.md8
-rw-r--r--libpod/container_api.go9
-rw-r--r--pkg/adapter/containers_remote.go1
-rw-r--r--pkg/apparmor/apparmor_linux.go13
-rw-r--r--pkg/apparmor/apparmor_linux_test.go17
-rw-r--r--pkg/apparmor/apparmor_unsupported.go5
-rw-r--r--pkg/namespaces/namespaces.go57
-rw-r--r--pkg/spec/createconfig.go19
-rw-r--r--pkg/spec/spec.go21
-rw-r--r--pkg/varlinkapi/containers.go54
-rw-r--r--pkg/varlinkapi/util.go2
-rw-r--r--test/e2e/run_ns_test.go9
19 files changed, 220 insertions, 41 deletions
diff --git a/API.md b/API.md
index cfe050343..febd094df 100755
--- a/API.md
+++ b/API.md
@@ -1894,6 +1894,8 @@ pod [?bool](#?bool)
quiet [?bool](#?bool)
+size [?bool](#?bool)
+
sort [?string](#?string)
sync [?bool](#?bool)
diff --git a/Makefile b/Makefile
index 3c7f9d74b..e155d31d4 100644
--- a/Makefile
+++ b/Makefile
@@ -127,8 +127,8 @@ help:
.gopathok:
ifeq ("$(wildcard $(GOPKGDIR))","")
mkdir -p "$(GOPKGBASEDIR)"
- ln -sf "$(CURDIR)" "$(GOPKGBASEDIR)"
- ln -sf "$(CURDIR)/vendor/github.com/varlink" "$(FIRST_GOPATH)/src/github.com/varlink"
+ ln -sfnT "$(CURDIR)" "$(GOPKGDIR)"
+ ln -sfnT "$(CURDIR)/vendor/github.com/varlink" "$(FIRST_GOPATH)/src/github.com/varlink"
endif
touch $@
diff --git a/cmd/podman/common.go b/cmd/podman/common.go
index 15f753d55..1e9092bd6 100644
--- a/cmd/podman/common.go
+++ b/cmd/podman/common.go
@@ -130,6 +130,10 @@ func getCreateFlags(c *cliconfig.PodmanCommand) {
"Drop capabilities from the container",
)
createFlags.String(
+ "cgroupns", "host",
+ "cgroup namespace to use",
+ )
+ createFlags.String(
"cgroup-parent", "",
"Optional parent cgroup for the container",
)
diff --git a/cmd/podman/shared/create.go b/cmd/podman/shared/create.go
index 5c37a1875..b14ce431d 100644
--- a/cmd/podman/shared/create.go
+++ b/cmd/podman/shared/create.go
@@ -400,11 +400,12 @@ func ParseCreateOpts(ctx context.Context, c *GenericCLIResults, runtime *libpod.
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"),
+ "cgroup": c.String("cgroupns"),
+ "pid": c.String("pid"),
+ "net": namespaceNet,
+ "ipc": c.String("ipc"),
+ "user": c.String("userns"),
+ "uts": c.String("uts"),
}
originalPodName := c.String("pod")
@@ -462,6 +463,11 @@ func ParseCreateOpts(ctx context.Context, c *GenericCLIResults, runtime *libpod.
return nil, errors.Errorf("--uts %q is not valid", namespaces["uts"])
}
+ cgroupMode := ns.CgroupMode(namespaces["cgroup"])
+ if !cgroupMode.Valid() {
+ return nil, errors.Errorf("--cgroup %q is not valid", namespaces["cgroup"])
+ }
+
ipcMode := ns.IpcMode(namespaces["ipc"])
if !cc.Valid(string(ipcMode), ipcMode) {
return nil, errors.Errorf("--ipc %q is not valid", ipcMode)
@@ -652,6 +658,7 @@ func ParseCreateOpts(ctx context.Context, c *GenericCLIResults, runtime *libpod.
CapAdd: c.StringSlice("cap-add"),
CapDrop: c.StringSlice("cap-drop"),
CidFile: c.String("cidfile"),
+ Cgroupns: c.String("cgroupns"),
CgroupParent: c.String("cgroup-parent"),
Command: command,
Detach: c.Bool("detach"),
@@ -687,6 +694,7 @@ func ParseCreateOpts(ctx context.Context, c *GenericCLIResults, runtime *libpod.
NetMode: netMode,
UtsMode: utsMode,
PidMode: pidMode,
+ CgroupMode: cgroupMode,
Pod: podName,
Privileged: c.Bool("privileged"),
Publish: c.StringSlice("publish"),
diff --git a/cmd/podman/shared/intermediate.go b/cmd/podman/shared/intermediate.go
index 8337dc647..4062ac48a 100644
--- a/cmd/podman/shared/intermediate.go
+++ b/cmd/podman/shared/intermediate.go
@@ -370,6 +370,7 @@ func NewIntermediateLayer(c *cliconfig.PodmanCommand, remote bool) GenericCLIRes
m["blkio-weight-device"] = newCRStringSlice(c, "blkio-weight-device")
m["cap-add"] = newCRStringSlice(c, "cap-add")
m["cap-drop"] = newCRStringSlice(c, "cap-drop")
+ m["cgroupns"] = newCRString(c, "cgroupns")
m["cgroup-parent"] = newCRString(c, "cgroup-parent")
m["cidfile"] = newCRString(c, "cidfile")
m["conmon-pidfile"] = newCRString(c, "conmon-pidfile")
diff --git a/cmd/podman/varlink/io.podman.varlink b/cmd/podman/varlink/io.podman.varlink
index 9410b9459..0bf236b77 100644
--- a/cmd/podman/varlink/io.podman.varlink
+++ b/cmd/podman/varlink/io.podman.varlink
@@ -144,10 +144,11 @@ type PsOpts (
last: ?int,
latest: ?bool,
noTrunc: ?bool,
- pod: ?bool,
- quiet: ?bool,
- sort: ?string,
- sync: ?bool
+ pod: ?bool,
+ quiet: ?bool,
+ size: ?bool,
+ sort: ?string,
+ sync: ?bool
)
type PsContainer (
diff --git a/docs/podman-create.1.md b/docs/podman-create.1.md
index 89f146670..24a78ab93 100644
--- a/docs/podman-create.1.md
+++ b/docs/podman-create.1.md
@@ -63,6 +63,14 @@ Add Linux capabilities
Drop Linux capabilities
+**--cgroupns**=*mode*
+
+Set the cgroup namespace mode for the container, by default **host** is used.
+ **host**: use the host's cgroup namespace inside the container.
+ **container:<NAME|ID>**: join the namespace of the specified container.
+ **private**: create a new cgroup namespace.
+ **ns:<PATH>**: join the namespace at the specified path.
+
**--cgroup-parent**=*path*
Path to cgroups under which the cgroup for the container will be created. If the path is not absolute, the path is considered to be relative to the cgroups path of the init process. Cgroups will be created if they do not already exist.
diff --git a/docs/podman-run.1.md b/docs/podman-run.1.md
index ebf774b24..6315afea6 100644
--- a/docs/podman-run.1.md
+++ b/docs/podman-run.1.md
@@ -77,6 +77,14 @@ Add Linux capabilities
Drop Linux capabilities
+**--cgroupns**=*mode*
+
+Set the cgroup namespace mode for the container, by default **host** is used.
+ **host**: use the host's cgroup namespace inside the container.
+ **container:<NAME|ID>**: join the namespace of the specified container.
+ **private**: create a new cgroup namespace.
+ **ns:<PATH>**: join the namespace at the specified path.
+
**--cgroup-parent**=*cgroup*
Path to cgroups under which the cgroup for the container will be created. If the path is not absolute, the path is considered to be relative to the cgroups path of the init process. Cgroups will be created if they do not already exist.
diff --git a/libpod/container_api.go b/libpod/container_api.go
index 3577b8e8c..ae181887e 100644
--- a/libpod/container_api.go
+++ b/libpod/container_api.go
@@ -305,6 +305,11 @@ func (c *Container) Exec(tty, privileged bool, env, cmd []string, user, workDir
if err != nil {
if exited {
// If the runtime exited, propagate the error we got from the process.
+ // We need to remove PID files to ensure no memory leaks
+ if err2 := os.Remove(pidFile); err2 != nil {
+ logrus.Errorf("Error removing exit file for container %s exec session %s: %v", c.ID(), sessionID, err2)
+ }
+
return err
}
return errors.Wrapf(err, "timed out waiting for runtime to create pidfile for exec session in container %s", c.ID())
@@ -312,6 +317,10 @@ func (c *Container) Exec(tty, privileged bool, env, cmd []string, user, workDir
// Pidfile exists, read it
contents, err := ioutil.ReadFile(pidFile)
+ // We need to remove PID files to ensure no memory leaks
+ if err2 := os.Remove(pidFile); err2 != nil {
+ logrus.Errorf("Error removing exit file for container %s exec session %s: %v", c.ID(), sessionID, err2)
+ }
if err != nil {
// We don't know the PID of the exec session
// However, it may still be alive
diff --git a/pkg/adapter/containers_remote.go b/pkg/adapter/containers_remote.go
index 5836d0788..c816fd980 100644
--- a/pkg/adapter/containers_remote.go
+++ b/pkg/adapter/containers_remote.go
@@ -493,6 +493,7 @@ func (r *LocalRuntime) Ps(c *cliconfig.PsValues, opts shared.PsOptions) ([]share
NoTrunc: &c.NoTrunct,
Pod: &c.Pod,
Quiet: &c.Quiet,
+ Size: &c.Size,
Sort: &c.Sort,
Sync: &c.Sync,
}
diff --git a/pkg/apparmor/apparmor_linux.go b/pkg/apparmor/apparmor_linux.go
index 0d01f41e9..479600408 100644
--- a/pkg/apparmor/apparmor_linux.go
+++ b/pkg/apparmor/apparmor_linux.go
@@ -4,6 +4,7 @@ package apparmor
import (
"bufio"
+ "bytes"
"fmt"
"io"
"os"
@@ -104,6 +105,18 @@ func InstallDefault(name string) error {
return cmd.Wait()
}
+// DefaultContent returns the default profile content as byte slice. The
+// profile is named as the provided `name`. The function errors if the profile
+// generation fails.
+func DefaultContent(name string) ([]byte, error) {
+ p := profileData{Name: name}
+ var bytes bytes.Buffer
+ if err := p.generateDefault(&bytes); err != nil {
+ return nil, err
+ }
+ return bytes.Bytes(), nil
+}
+
// IsLoaded checks if a profile with the given name has been loaded into the
// kernel.
func IsLoaded(name string) (bool, error) {
diff --git a/pkg/apparmor/apparmor_linux_test.go b/pkg/apparmor/apparmor_linux_test.go
index ac3260723..e94293d87 100644
--- a/pkg/apparmor/apparmor_linux_test.go
+++ b/pkg/apparmor/apparmor_linux_test.go
@@ -78,10 +78,12 @@ Copyright 2009-2012 Canonical Ltd.
}
}
-func TestInstallDefault(t *testing.T) {
- profile := "libpod-default-testing"
- aapath := "/sys/kernel/security/apparmor/"
+const (
+ aapath = "/sys/kernel/security/apparmor/"
+ profile = "libpod-default-testing"
+)
+func TestInstallDefault(t *testing.T) {
if _, err := os.Stat(aapath); err != nil {
t.Skip("AppArmor isn't available in this environment")
}
@@ -127,3 +129,12 @@ func TestInstallDefault(t *testing.T) {
}
checkLoaded(false)
}
+
+func TestDefaultContent(t *testing.T) {
+ if _, err := os.Stat(aapath); err != nil {
+ t.Skip("AppArmor isn't available in this environment")
+ }
+ if err := DefaultContent(profile); err != nil {
+ t.Fatalf("Couldn't retrieve default AppArmor profile content '%s': %v", profile, err)
+ }
+}
diff --git a/pkg/apparmor/apparmor_unsupported.go b/pkg/apparmor/apparmor_unsupported.go
index b2b4de5f5..13469f1b6 100644
--- a/pkg/apparmor/apparmor_unsupported.go
+++ b/pkg/apparmor/apparmor_unsupported.go
@@ -24,3 +24,8 @@ func CheckProfileAndLoadDefault(name string) (string, error) {
}
return "", ErrApparmorUnsupported
}
+
+// DefaultContent dummy.
+func DefaultContent(name string) ([]byte, error) {
+ return nil, nil
+}
diff --git a/pkg/namespaces/namespaces.go b/pkg/namespaces/namespaces.go
index ec9276344..7ed95bd0f 100644
--- a/pkg/namespaces/namespaces.go
+++ b/pkg/namespaces/namespaces.go
@@ -4,6 +4,63 @@ import (
"strings"
)
+// CgroupMode represents cgroup mode in the container.
+type CgroupMode string
+
+// IsHost indicates whether the container uses the host's cgroup.
+func (n CgroupMode) IsHost() bool {
+ return n == "host"
+}
+
+// IsNS indicates a cgroup namespace passed in by path (ns:<path>)
+func (n CgroupMode) IsNS() bool {
+ return strings.HasPrefix(string(n), "ns:")
+}
+
+// NS gets the path associated with a ns:<path> cgroup ns
+func (n CgroupMode) NS() string {
+ parts := strings.SplitN(string(n), ":", 2)
+ if len(parts) > 1 {
+ return parts[1]
+ }
+ return ""
+}
+
+// IsContainer indicates whether the container uses a new cgroup namespace.
+func (n CgroupMode) IsContainer() bool {
+ parts := strings.SplitN(string(n), ":", 2)
+ return len(parts) > 1 && parts[0] == "container"
+}
+
+// Container returns the name of the container whose cgroup namespace is going to be used.
+func (n CgroupMode) Container() string {
+ parts := strings.SplitN(string(n), ":", 2)
+ if len(parts) > 1 {
+ return parts[1]
+ }
+ return ""
+}
+
+// IsPrivate indicates whether the container uses the a private cgroup.
+func (n CgroupMode) IsPrivate() bool {
+ return n == "private"
+}
+
+// Valid indicates whether the Cgroup namespace is valid.
+func (n CgroupMode) Valid() bool {
+ parts := strings.Split(string(n), ":")
+ switch mode := parts[0]; mode {
+ case "", "host", "private", "ns":
+ case "container":
+ if len(parts) != 2 || parts[1] == "" {
+ return false
+ }
+ default:
+ return false
+ }
+ return true
+}
+
// UsernsMode represents userns mode in the container.
type UsernsMode string
diff --git a/pkg/spec/createconfig.go b/pkg/spec/createconfig.go
index 0042ed401..1fb1f829b 100644
--- a/pkg/spec/createconfig.go
+++ b/pkg/spec/createconfig.go
@@ -63,6 +63,7 @@ type CreateConfig struct {
CapDrop []string // cap-drop
CidFile string
ConmonPidFile string
+ Cgroupns string
CgroupParent string // cgroup-parent
Command []string
Detach bool // detach
@@ -101,6 +102,7 @@ type CreateConfig struct {
NetworkAlias []string //network-alias
PidMode namespaces.PidMode //pid
Pod string //pod
+ CgroupMode namespaces.CgroupMode //cgroup
PortBindings nat.PortMap
Privileged bool //privileged
Publish []string //publish
@@ -268,6 +270,23 @@ func (c *CreateConfig) getContainerCreateOptions(runtime *libpod.Runtime, pod *l
options = append(options, libpod.WithNetNS(portBindings, postConfigureNetNS, string(c.NetMode), networks))
}
+ if c.CgroupMode.IsNS() {
+ ns := c.CgroupMode.NS()
+ if ns == "" {
+ return nil, errors.Errorf("invalid empty user-defined network namespace")
+ }
+ _, err := os.Stat(ns)
+ if err != nil {
+ return nil, err
+ }
+ } else if c.CgroupMode.IsContainer() {
+ connectedCtr, err := runtime.LookupContainer(c.CgroupMode.Container())
+ if err != nil {
+ return nil, errors.Wrapf(err, "container %q not found", c.CgroupMode.Container())
+ }
+ options = append(options, libpod.WithCgroupNSFrom(connectedCtr))
+ }
+
if c.PidMode.IsContainer() {
connectedCtr, err := runtime.LookupContainer(c.PidMode.Container())
if err != nil {
diff --git a/pkg/spec/spec.go b/pkg/spec/spec.go
index 0f785df01..824c99025 100644
--- a/pkg/spec/spec.go
+++ b/pkg/spec/spec.go
@@ -323,6 +323,10 @@ func (config *CreateConfig) createConfigToOCISpec(runtime *libpod.Runtime, userM
if err := addIpcNS(config, &g); err != nil {
return nil, err
}
+
+ if err := addCgroupNS(config, &g); err != nil {
+ return nil, err
+ }
configSpec := g.Config
// HANDLE CAPABILITIES
@@ -620,6 +624,23 @@ func addIpcNS(config *CreateConfig, g *generate.Generator) error {
return nil
}
+func addCgroupNS(config *CreateConfig, g *generate.Generator) error {
+ cgroupMode := config.CgroupMode
+ if cgroupMode.IsNS() {
+ return g.AddOrReplaceLinuxNamespace(string(spec.CgroupNamespace), NS(string(cgroupMode)))
+ }
+ if cgroupMode.IsHost() {
+ return g.RemoveLinuxNamespace(spec.CgroupNamespace)
+ }
+ if cgroupMode.IsPrivate() {
+ return g.AddOrReplaceLinuxNamespace(spec.CgroupNamespace, "")
+ }
+ if cgroupMode.IsContainer() {
+ logrus.Debug("Using container cgroup mode")
+ }
+ return nil
+}
+
func addRlimits(config *CreateConfig, g *generate.Generator) error {
var (
kernelMax uint64 = 1048576
diff --git a/pkg/varlinkapi/containers.go b/pkg/varlinkapi/containers.go
index 700e02b0c..6f6909fac 100644
--- a/pkg/varlinkapi/containers.go
+++ b/pkg/varlinkapi/containers.go
@@ -65,32 +65,34 @@ func (i *LibpodAPI) Ps(call iopodman.VarlinkCall, opts iopodman.PsOpts) error {
for _, ctr := range psContainerOutputs {
container := iopodman.PsContainer{
- Id: ctr.ID,
- Image: ctr.Image,
- Command: ctr.Command,
- Created: ctr.Created,
- Ports: ctr.Ports,
- Names: ctr.Names,
- IsInfra: ctr.IsInfra,
- Status: ctr.Status,
- State: ctr.State.String(),
- PidNum: int64(ctr.Pid),
- RootFsSize: ctr.Size.RootFsSize,
- RwSize: ctr.Size.RwSize,
- Pod: ctr.Pod,
- CreatedAt: ctr.CreatedAt.Format(time.RFC3339Nano),
- ExitedAt: ctr.ExitedAt.Format(time.RFC3339Nano),
- StartedAt: ctr.StartedAt.Format(time.RFC3339Nano),
- Labels: ctr.Labels,
- NsPid: ctr.PID,
- Cgroup: ctr.Cgroup,
- Ipc: ctr.Cgroup,
- Mnt: ctr.MNT,
- Net: ctr.NET,
- PidNs: ctr.PIDNS,
- User: ctr.User,
- Uts: ctr.UTS,
- Mounts: ctr.Mounts,
+ Id: ctr.ID,
+ Image: ctr.Image,
+ Command: ctr.Command,
+ Created: ctr.Created,
+ Ports: ctr.Ports,
+ Names: ctr.Names,
+ IsInfra: ctr.IsInfra,
+ Status: ctr.Status,
+ State: ctr.State.String(),
+ PidNum: int64(ctr.Pid),
+ Pod: ctr.Pod,
+ CreatedAt: ctr.CreatedAt.Format(time.RFC3339Nano),
+ ExitedAt: ctr.ExitedAt.Format(time.RFC3339Nano),
+ StartedAt: ctr.StartedAt.Format(time.RFC3339Nano),
+ Labels: ctr.Labels,
+ NsPid: ctr.PID,
+ Cgroup: ctr.Cgroup,
+ Ipc: ctr.Cgroup,
+ Mnt: ctr.MNT,
+ Net: ctr.NET,
+ PidNs: ctr.PIDNS,
+ User: ctr.User,
+ Uts: ctr.UTS,
+ Mounts: ctr.Mounts,
+ }
+ if ctr.Size != nil {
+ container.RootFsSize = ctr.Size.RootFsSize
+ container.RwSize = ctr.Size.RwSize
}
containers = append(containers, container)
}
diff --git a/pkg/varlinkapi/util.go b/pkg/varlinkapi/util.go
index e8f74e6aa..d3a41f7ab 100644
--- a/pkg/varlinkapi/util.go
+++ b/pkg/varlinkapi/util.go
@@ -191,7 +191,7 @@ func makePsOpts(inOpts iopodman.PsOpts) shared.PsOptions {
Latest: derefBool(inOpts.Latest),
NoTrunc: derefBool(inOpts.NoTrunc),
Pod: derefBool(inOpts.Pod),
- Size: true,
+ Size: derefBool(inOpts.Size),
Sort: derefString(inOpts.Sort),
Namespace: true,
Sync: derefBool(inOpts.Sync),
diff --git a/test/e2e/run_ns_test.go b/test/e2e/run_ns_test.go
index 6ba0d1aba..e3e86fc66 100644
--- a/test/e2e/run_ns_test.go
+++ b/test/e2e/run_ns_test.go
@@ -51,6 +51,15 @@ var _ = Describe("Podman run ns", func() {
Expect(session.ExitCode()).To(Not(Equal(0)))
})
+ It("podman run --cgroup private test", func() {
+ session := podmanTest.Podman([]string{"run", "--cgroupns=private", fedoraMinimal, "cat", "/proc/self/cgroup"})
+ session.WaitWithDefaultTimeout()
+ Expect(session.ExitCode()).To(Equal(0))
+
+ output := session.OutputToString()
+ Expect(output).ToNot(ContainSubstring("slice"))
+ })
+
It("podman run ipcns test", func() {
setup := SystemExec("ls", []string{"--inode", "-d", "/dev/shm"})
Expect(setup.ExitCode()).To(Equal(0))
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2024-12-26 06:06:22 +0000