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Fix signal handling for unit tests 

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>
This commit is contained in:
Michael Crosby 2016-05-19 17:28:58 -07:00
parent 60f5df6e09
commit efcd73fb5b
22 changed files with 125 additions and 88 deletions
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2
Makefile
View File

@ -55,7 +55,7 @@ unittest: runctestimage
docker run -e TESTFLAGS -ti --privileged --rm -v $(CURDIR):/go/src/$(PROJECT) $(RUNC_TEST_IMAGE) make localunittest
localunittest: all
go test -tags "$(BUILDTAGS)" ${TESTFLAGS} -v ./...
go test -timeout 3m -tags "$(BUILDTAGS)" ${TESTFLAGS} -v ./...
integration: runctestimage
docker run -e TESTFLAGS -t --privileged --rm -v $(CURDIR):/go/src/$(PROJECT) $(RUNC_TEST_IMAGE) make localintegration

15
libcontainer/container.go
View File

@ -17,16 +17,12 @@ type Status int
const (
// Created is the status that denotes the container exists but has not been run yet.
Created Status = iota
// Running is the status that denotes the container exists and is running.
Running
// Pausing is the status that denotes the container exists, it is in the process of being paused.
Pausing
// Paused is the status that denotes the container exists, but all its processes are paused.
Paused
// Stopped is the status that denotes the container does not have a created or running process.
Stopped
)
@ -127,6 +123,17 @@ type BaseContainer interface {
// Systemerror - System error.
Start(process *Process) (err error)
// StartI immediatly starts the process inside the conatiner. Returns error if process
// fails to start. It does not block waiting for a SIGCONT after start returns but
// sends the signal when the process has completed.
//
// errors:
// ContainerDestroyed - Container no longer exists,
// ConfigInvalid - config is invalid,
// ContainerPaused - Container is paused,
// Systemerror - System error.
StartI(process *Process) (err error)
// Destroys the container after killing all running processes.
//
// Any event registrations are removed before the container is destroyed.

50
libcontainer/container_linux.go
View File

@ -29,6 +29,10 @@ import (
const stdioFdCount = 3
// InitContinueSignal is used to signal the container init process to
// start the users specified process after the container create has finished.
const InitContinueSignal = syscall.SIGCONT
type linuxContainer struct {
id string
root string
@ -181,8 +185,28 @@ func (c *linuxContainer) Start(process *Process) error {
if err != nil {
return err
}
doInit := status == Stopped
parent, err := c.newParentProcess(process, doInit)
return c.start(process, status == Stopped)
}
func (c *linuxContainer) StartI(process *Process) error {
c.m.Lock()
defer c.m.Unlock()
status, err := c.currentStatus()
if err != nil {
return err
}
isInit := status == Stopped
if err := c.start(process, isInit); err != nil {
return err
}
if isInit {
return process.ops.signal(InitContinueSignal)
}
return nil
}
func (c *linuxContainer) start(process *Process, isInit bool) error {
parent, err := c.newParentProcess(process, isInit)
if err != nil {
return newSystemErrorWithCause(err, "creating new parent process")
}
@ -198,7 +222,10 @@ func (c *linuxContainer) Start(process *Process) error {
c.state = &runningState{
c: c,
}
if doInit {
if isInit {
c.state = &createdState{
c: c,
}
if err := c.updateState(parent); err != nil {
return err
}
@ -370,15 +397,16 @@ func (c *linuxContainer) Pause() error {
if err != nil {
return err
}
if status != Running {
return newGenericError(fmt.Errorf("container not running"), ContainerNotRunning)
switch status {
case Running, Created:
if err := c.cgroupManager.Freeze(configs.Frozen); err != nil {
return err
}
return c.state.transition(&pausedState{
c: c,
})
}
if err := c.cgroupManager.Freeze(configs.Frozen); err != nil {
return err
}
return c.state.transition(&pausedState{
c: c,
})
return newGenericError(fmt.Errorf("container not running: %s", status), ContainerNotRunning)
}
func (c *linuxContainer) Resume() error {

2
libcontainer/factory_linux.go
View File

@ -222,7 +222,7 @@ func (l *LinuxFactory) Type() string {
func (l *LinuxFactory) StartInitialization() (err error) {
// start the signal handler as soon as we can
s := make(chan os.Signal, 1)
signal.Notify(s, syscall.SIGCONT)
signal.Notify(s, InitContinueSignal)
fdStr := os.Getenv("_LIBCONTAINER_INITPIPE")
pipefd, err := strconv.Atoi(fdStr)
if err != nil {

2
libcontainer/integration/checkpoint_test.go
View File

@ -89,7 +89,7 @@ func TestCheckpoint(t *testing.T) {
Stdout: &stdout,
}
err = container.Start(&pconfig)
err = container.StartI(&pconfig)
stdinR.Close()
defer stdinW.Close()
if err != nil {

46
libcontainer/integration/exec_test.go
View File

@ -241,7 +241,7 @@ func TestEnter(t *testing.T) {
Stdin: stdinR,
Stdout: &stdout,
}
err = container.Start(&pconfig)
err = container.StartI(&pconfig)
stdinR.Close()
defer stdinW.Close()
ok(t, err)
@ -259,7 +259,7 @@ func TestEnter(t *testing.T) {
pconfig2.Stdin = stdinR2
pconfig2.Stdout = &stdout2
err = container.Start(&pconfig2)
err = container.StartI(&pconfig2)
stdinR2.Close()
defer stdinW2.Close()
ok(t, err)
@ -330,7 +330,7 @@ func TestProcessEnv(t *testing.T) {
Stdin: nil,
Stdout: &stdout,
}
err = container.Start(&pconfig)
err = container.StartI(&pconfig)
ok(t, err)
// Wait for process
@ -378,7 +378,7 @@ func TestProcessCaps(t *testing.T) {
Stdin: nil,
Stdout: &stdout,
}
err = container.Start(&pconfig)
err = container.StartI(&pconfig)
ok(t, err)
// Wait for process
@ -448,7 +448,7 @@ func TestAdditionalGroups(t *testing.T) {
Stdin: nil,
Stdout: &stdout,
}
err = container.Start(&pconfig)
err = container.StartI(&pconfig)
ok(t, err)
// Wait for process
@ -508,7 +508,7 @@ func testFreeze(t *testing.T, systemd bool) {
Env: standardEnvironment,
Stdin: stdinR,
}
err = container.Start(pconfig)
err = container.StartI(pconfig)
stdinR.Close()
defer stdinW.Close()
ok(t, err)
@ -719,7 +719,7 @@ func TestContainerState(t *testing.T) {
Env: standardEnvironment,
Stdin: stdinR,
}
err = container.Start(p)
err = container.StartI(p)
if err != nil {
t.Fatal(err)
}
@ -772,7 +772,7 @@ func TestPassExtraFiles(t *testing.T) {
Stdin: nil,
Stdout: &stdout,
}
err = container.Start(&process)
err = container.StartI(&process)
if err != nil {
t.Fatal(err)
}
@ -853,7 +853,7 @@ func TestMountCmds(t *testing.T) {
Args: []string{"sh", "-c", "env"},
Env: standardEnvironment,
}
err = container.Start(&pconfig)
err = container.StartI(&pconfig)
if err != nil {
t.Fatal(err)
}
@ -902,7 +902,7 @@ func TestSysctl(t *testing.T) {
Stdin: nil,
Stdout: &stdout,
}
err = container.Start(&pconfig)
err = container.StartI(&pconfig)
ok(t, err)
// Wait for process
@ -1042,7 +1042,7 @@ func TestOomScoreAdj(t *testing.T) {
Stdin: nil,
Stdout: &stdout,
}
err = container.Start(&pconfig)
err = container.StartI(&pconfig)
ok(t, err)
// Wait for process
@ -1114,7 +1114,7 @@ func TestHook(t *testing.T) {
Stdin: nil,
Stdout: &stdout,
}
err = container.Start(&pconfig)
err = container.StartI(&pconfig)
ok(t, err)
// Wait for process
@ -1231,7 +1231,7 @@ func TestRootfsPropagationSlaveMount(t *testing.T) {
Stdin: stdinR,
}
err = container.Start(pconfig)
err = container.StartI(pconfig)
stdinR.Close()
defer stdinW.Close()
ok(t, err)
@ -1260,7 +1260,7 @@ func TestRootfsPropagationSlaveMount(t *testing.T) {
Stdout: &stdout2,
}
err = container.Start(pconfig2)
err = container.StartI(pconfig2)
stdinR2.Close()
defer stdinW2.Close()
ok(t, err)
@ -1348,7 +1348,7 @@ func TestRootfsPropagationSharedMount(t *testing.T) {
Stdin: stdinR,
}
err = container.Start(pconfig)
err = container.StartI(pconfig)
stdinR.Close()
defer stdinW.Close()
ok(t, err)
@ -1380,7 +1380,7 @@ func TestRootfsPropagationSharedMount(t *testing.T) {
Capabilities: processCaps,
}
err = container.Start(pconfig2)
err = container.StartI(pconfig2)
stdinR2.Close()
defer stdinW2.Close()
ok(t, err)
@ -1452,7 +1452,7 @@ func TestInitJoinPID(t *testing.T) {
Env: standardEnvironment,
Stdin: stdinR1,
}
err = container1.Start(init1)
err = container1.StartI(init1)
stdinR1.Close()
defer stdinW1.Close()
ok(t, err)
@ -1462,7 +1462,7 @@ func TestInitJoinPID(t *testing.T) {
ok(t, err)
pidns1 := state1.NamespacePaths[configs.NEWPID]
// Start a container inside the existing pidns but with different cgroups
// StartI a container inside the existing pidns but with different cgroups
config2 := newTemplateConfig(rootfs)
config2.Namespaces.Add(configs.NEWPID, pidns1)
config2.Cgroups.Path = "integration/test2"
@ -1478,7 +1478,7 @@ func TestInitJoinPID(t *testing.T) {
Env: standardEnvironment,
Stdin: stdinR2,
}
err = container2.Start(init2)
err = container2.StartI(init2)
stdinR2.Close()
defer stdinW2.Close()
ok(t, err)
@ -1508,7 +1508,7 @@ func TestInitJoinPID(t *testing.T) {
Env: standardEnvironment,
Stdout: buffers.Stdout,
}
err = container1.Start(ps)
err = container1.StartI(ps)
ok(t, err)
waitProcess(ps, t)
@ -1557,7 +1557,7 @@ func TestInitJoinNetworkAndUser(t *testing.T) {
Env: standardEnvironment,
Stdin: stdinR1,
}
err = container1.Start(init1)
err = container1.StartI(init1)
stdinR1.Close()
defer stdinW1.Close()
ok(t, err)
@ -1568,7 +1568,7 @@ func TestInitJoinNetworkAndUser(t *testing.T) {
netns1 := state1.NamespacePaths[configs.NEWNET]
userns1 := state1.NamespacePaths[configs.NEWUSER]
// Start a container inside the existing pidns but with different cgroups
// StartI a container inside the existing pidns but with different cgroups
rootfs2, err := newRootfs()
ok(t, err)
defer remove(rootfs2)
@ -1591,7 +1591,7 @@ func TestInitJoinNetworkAndUser(t *testing.T) {
Env: standardEnvironment,
Stdin: stdinR2,
}
err = container2.Start(init2)
err = container2.StartI(init2)
stdinR2.Close()
defer stdinW2.Close()
ok(t, err)

32
libcontainer/integration/execin_test.go
View File

@ -36,7 +36,7 @@ func TestExecIn(t *testing.T) {
Env: standardEnvironment,
Stdin: stdinR,
}
err = container.Start(process)
err = container.StartI(process)
stdinR.Close()
defer stdinW.Close()
ok(t, err)
@ -51,7 +51,7 @@ func TestExecIn(t *testing.T) {
Stderr: buffers.Stderr,
}
err = container.Start(ps)
err = container.StartI(ps)
ok(t, err)
waitProcess(ps, t)
stdinW.Close()
@ -103,7 +103,7 @@ func testExecInRlimit(t *testing.T, userns bool) {
Env: standardEnvironment,
Stdin: stdinR,
}
err = container.Start(process)
err = container.StartI(process)
stdinR.Close()
defer stdinW.Close()
ok(t, err)
@ -121,7 +121,7 @@ func testExecInRlimit(t *testing.T, userns bool) {
{Type: syscall.RLIMIT_NOFILE, Hard: 1026, Soft: 1026},
},
}
err = container.Start(ps)
err = container.StartI(ps)
ok(t, err)
waitProcess(ps, t)
@ -155,7 +155,7 @@ func TestExecInError(t *testing.T) {
Env: standardEnvironment,
Stdin: stdinR,
}
err = container.Start(process)
err = container.StartI(process)
stdinR.Close()
defer func() {
stdinW.Close()
@ -173,7 +173,7 @@ func TestExecInError(t *testing.T) {
Env: standardEnvironment,
Stdout: &out,
}
err = container.Start(unexistent)
err = container.StartI(unexistent)
if err == nil {
t.Fatal("Should be an error")
}
@ -207,7 +207,7 @@ func TestExecInTTY(t *testing.T) {
Env: standardEnvironment,
Stdin: stdinR,
}
err = container.Start(process)
err = container.StartI(process)
stdinR.Close()
defer stdinW.Close()
ok(t, err)
@ -225,7 +225,7 @@ func TestExecInTTY(t *testing.T) {
close(copy)
}()
ok(t, err)
err = container.Start(ps)
err = container.StartI(ps)
ok(t, err)
select {
case <-time.After(5 * time.Second):
@ -264,7 +264,7 @@ func TestExecInEnvironment(t *testing.T) {
Env: standardEnvironment,
Stdin: stdinR,
}
err = container.Start(process)
err = container.StartI(process)
stdinR.Close()
defer stdinW.Close()
ok(t, err)
@ -283,7 +283,7 @@ func TestExecInEnvironment(t *testing.T) {
Stdout: buffers.Stdout,
Stderr: buffers.Stderr,
}
err = container.Start(process2)
err = container.StartI(process2)
ok(t, err)
waitProcess(process2, t)
@ -328,7 +328,7 @@ func TestExecinPassExtraFiles(t *testing.T) {
Env: standardEnvironment,
Stdin: stdinR,
}
err = container.Start(process)
err = container.StartI(process)
stdinR.Close()
defer stdinW.Close()
if err != nil {
@ -346,7 +346,7 @@ func TestExecinPassExtraFiles(t *testing.T) {
Stdin: nil,
Stdout: &stdout,
}
err = container.Start(inprocess)
err = container.StartI(inprocess)
if err != nil {
t.Fatal(err)
}
@ -401,7 +401,7 @@ func TestExecInOomScoreAdj(t *testing.T) {
Env: standardEnvironment,
Stdin: stdinR,
}
err = container.Start(process)
err = container.StartI(process)
stdinR.Close()
defer stdinW.Close()
ok(t, err)
@ -415,7 +415,7 @@ func TestExecInOomScoreAdj(t *testing.T) {
Stdout: buffers.Stdout,
Stderr: buffers.Stderr,
}
err = container.Start(ps)
err = container.StartI(ps)
ok(t, err)
waitProcess(ps, t)
@ -456,7 +456,7 @@ func TestExecInUserns(t *testing.T) {
Env: standardEnvironment,
Stdin: stdinR,
}
err = container.Start(process)
err = container.StartI(process)
stdinR.Close()
defer stdinW.Close()
ok(t, err)
@ -476,7 +476,7 @@ func TestExecInUserns(t *testing.T) {
Stdout: buffers.Stdout,
Stderr: os.Stderr,
}
err = container.Start(process2)
err = container.StartI(process2)
ok(t, err)
waitProcess(process2, t)
stdinW.Close()

6
libcontainer/integration/seccomp_test.go
View File

@ -50,7 +50,7 @@ func TestSeccompDenyGetcwd(t *testing.T) {
Stderr: buffers.Stderr,
}
err = container.Start(pwd)
err = container.StartI(pwd)
if err != nil {
t.Fatal(err)
}
@ -125,7 +125,7 @@ func TestSeccompPermitWriteConditional(t *testing.T) {
Stderr: buffers.Stderr,
}
err = container.Start(dmesg)
err = container.StartI(dmesg)
if err != nil {
t.Fatal(err)
}
@ -186,7 +186,7 @@ func TestSeccompDenyWriteConditional(t *testing.T) {
Stderr: buffers.Stderr,
}
err = container.Start(dmesg)
err = container.StartI(dmesg)
if err != nil {
t.Fatal(err)
}

14
libcontainer/integration/template_test.go
View File

@ -89,12 +89,14 @@ func newTemplateConfig(rootfs string) *configs.Config {
Data: "mode=1777,size=65536k",
Flags: defaultMountFlags,
},
{
Source: "mqueue",
Destination: "/dev/mqueue",
Device: "mqueue",
Flags: defaultMountFlags,
},
/*
{
Source: "mqueue",
Destination: "/dev/mqueue",
Device: "mqueue",
Flags: defaultMountFlags,
},
*/
{
Source: "sysfs",
Destination: "/sys",

5
libcontainer/integration/utils_test.go
View File

@ -123,13 +123,10 @@ func runContainer(config *configs.Config, console string, args ...string) (buffe
Stderr: buffers.Stderr,
}
err = container.Start(process)
err = container.StartI(process)
if err != nil {
return buffers, -1, err
}
if err := container.Signal(syscall.SIGCONT); err != nil {
return buffers, -1, err
}
ps, err := process.Wait()
if err != nil {
return buffers, -1, err

1
libcontainer/process_linux.go
View File

@ -221,6 +221,7 @@ func (p *initProcess) execSetns() error {
return err
}
p.cmd.Process = process
p.process.ops = p
return nil
}

5
libcontainer/state_linux.go
View File

@ -6,6 +6,7 @@ import (
"fmt"
"os"
"path/filepath"
"syscall"
"github.com/Sirupsen/logrus"
"github.com/opencontainers/runc/libcontainer/configs"
@ -149,8 +150,9 @@ func (i *createdState) status() Status {
func (i *createdState) transition(s containerState) error {
switch s.(type) {
case *runningState:
case *runningState, *pausedState, *stoppedState:
i.c.state = s
return nil
case *createdState:
return nil
}
@ -158,6 +160,7 @@ func (i *createdState) transition(s containerState) error {
}
func (i *createdState) destroy() error {
i.c.initProcess.signal(syscall.SIGKILL)
return destroy(i.c)
}

3
libcontainer/state_linux_test.go
View File

@ -6,10 +6,11 @@ import "testing"
func TestStateStatus(t *testing.T) {
states := map[containerState]Status{
&stoppedState{}: Destroyed,
&stoppedState{}: Stopped,
&runningState{}: Running,
&restoredState{}: Running,
&pausedState{}: Paused,
&createdState{}: Created,
}
for s, status := range states {
if s.status() != status {

2
run.go
View File

@ -40,7 +40,7 @@ command(s) that get executed on start, edit the args parameter of the spec. See
Usage: "specify the pty slave path for use with the container",
},
cli.BoolFlag{
Name: "detach,d",
Name: "detach, d",
Usage: "detach from the container's process",
},
cli.StringFlag{

4
start.go
View File

@ -1,8 +1,6 @@
package main
import (
"syscall"
"github.com/codegangsta/cli"
"github.com/opencontainers/runc/libcontainer"
)
@ -26,7 +24,7 @@ your host.`,
fatal(err)
}
if status == libcontainer.Created {
if err := container.Signal(syscall.SIGCONT); err != nil {
if err := container.Signal(libcontainer.InitContinueSignal); err != nil {
fatal(err)
}
}

2
tests/integration/delete.bats
View File

@ -23,7 +23,7 @@ function teardown() {
runc kill test_busybox KILL
# wait for busybox to be in the destroyed state
retry 10 1 eval "__runc state test_busybox | grep -q 'destroyed'"
retry 10 1 eval "__runc state test_busybox | grep -q 'stopped'"
# delete test_busybox
runc delete test_busybox

8
tests/integration/exec.bats
View File

@ -12,8 +12,8 @@ function teardown() {
}
@test "runc exec" {
# start busybox detached
runc start -d --console /dev/pts/ptmx test_busybox
# run busybox detached
runc run -d --console /dev/pts/ptmx test_busybox
[ "$status" -eq 0 ]
wait_for_container 15 1 test_busybox
@ -25,8 +25,8 @@ function teardown() {
}
@test "runc exec --pid-file" {
# start busybox detached
runc start -d --console /dev/pts/ptmx test_busybox
# run busybox detached
runc run -d --console /dev/pts/ptmx test_busybox
[ "$status" -eq 0 ]
wait_for_container 15 1 test_busybox

4
tests/integration/helpers.bash
View File

@ -153,7 +153,7 @@ function teardown_running_container() {
runc list
if [[ "${output}" == *"$1"* ]]; then
runc kill $1 KILL
retry 10 1 eval "__runc state '$1' | grep -q 'destroyed'"
retry 10 1 eval "__runc state '$1' | grep -q 'stopped'"
runc delete $1
fi
}
@ -162,7 +162,7 @@ function teardown_running_container_inroot() {
ROOT=$2 runc list
if [[ "${output}" == *"$1"* ]]; then
ROOT=$2 runc kill $1 KILL
retry 10 1 eval "ROOT='$2' __runc state '$1' | grep -q 'destroyed'"
retry 10 1 eval "ROOT='$2' __runc state '$1' | grep -q 'stopped'"
ROOT=$2 runc delete $1
fi
}

2
tests/integration/kill.bats
View File

@ -26,7 +26,7 @@ function teardown() {
runc kill test_busybox KILL
[ "$status" -eq 0 ]
retry 10 1 eval "__runc state test_busybox | grep -q 'destroyed'"
retry 10 1 eval "__runc state test_busybox | grep -q 'stopped'"
runc delete test_busybox
[ "$status" -eq 0 ]

4
tests/integration/root.bats
View File

@ -42,13 +42,13 @@ function teardown() {
runc kill test_busybox KILL
[ "$status" -eq 0 ]
retry 10 1 eval "__runc state test_busybox | grep -q 'destroyed'"
retry 10 1 eval "__runc state test_busybox | grep -q 'stopped'"
runc delete test_busybox
[ "$status" -eq 0 ]
ROOT=$HELLO_BUNDLE runc kill test_dotbox KILL
[ "$status" -eq 0 ]
retry 10 1 eval "ROOT='$HELLO_BUNDLE' __runc state test_dotbox | grep -q 'destroyed'"
retry 10 1 eval "ROOT='$HELLO_BUNDLE' __runc state test_dotbox | grep -q 'stopped'"
ROOT=$HELLO_BUNDLE runc delete test_dotbox
[ "$status" -eq 0 ]
}

2
tests/integration/state.bats
View File

@ -40,7 +40,7 @@ function teardown() {
runc kill test_busybox KILL
# wait for busybox to be in the destroyed state
retry 10 1 eval "__runc state test_busybox | grep -q 'destroyed'"
retry 10 1 eval "__runc state test_busybox | grep -q 'stopped'"
# delete test_busybox
runc delete test_busybox

2
utils_linux.go
View File

@ -247,7 +247,7 @@ func (r *runner) run(config *specs.Process) (int, error) {
}
}
if !r.create {
if err := process.Signal(syscall.SIGCONT); err != nil {
if err := process.Signal(libcontainer.InitContinueSignal); err != nil {
r.terminate(process)
r.destroy()
tty.Close()