60daa414db
runc already supports this case, so we just need to run it with proper options. Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>
545 lines
12 KiB
Go
545 lines
12 KiB
Go
// +build !windows
|
|
|
|
/*
|
|
Copyright The containerd Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package proc
|
|
|
|
import (
|
|
"context"
|
|
"sync"
|
|
"syscall"
|
|
|
|
"github.com/containerd/console"
|
|
"github.com/containerd/containerd/errdefs"
|
|
"github.com/containerd/fifo"
|
|
runc "github.com/containerd/go-runc"
|
|
google_protobuf "github.com/gogo/protobuf/types"
|
|
"github.com/pkg/errors"
|
|
)
|
|
|
|
type initState interface {
|
|
State
|
|
|
|
Pause(context.Context) error
|
|
Resume(context.Context) error
|
|
Update(context.Context, *google_protobuf.Any) error
|
|
Checkpoint(context.Context, *CheckpointConfig) error
|
|
Exec(context.Context, string, *ExecConfig) (Process, error)
|
|
}
|
|
|
|
type createdState struct {
|
|
p *Init
|
|
}
|
|
|
|
func (s *createdState) transition(name string) error {
|
|
switch name {
|
|
case "running":
|
|
s.p.initState = &runningState{p: s.p}
|
|
case "stopped":
|
|
s.p.initState = &stoppedState{p: s.p}
|
|
case "deleted":
|
|
s.p.initState = &deletedState{}
|
|
default:
|
|
return errors.Errorf("invalid state transition %q to %q", stateName(s), name)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (s *createdState) Pause(ctx context.Context) error {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
|
|
return errors.Errorf("cannot pause task in created state")
|
|
}
|
|
|
|
func (s *createdState) Resume(ctx context.Context) error {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
|
|
return errors.Errorf("cannot resume task in created state")
|
|
}
|
|
|
|
func (s *createdState) Update(context context.Context, r *google_protobuf.Any) error {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
|
|
return s.p.update(context, r)
|
|
}
|
|
|
|
func (s *createdState) Checkpoint(context context.Context, r *CheckpointConfig) error {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
|
|
return errors.Errorf("cannot checkpoint a task in created state")
|
|
}
|
|
|
|
func (s *createdState) Resize(ws console.WinSize) error {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
|
|
return s.p.resize(ws)
|
|
}
|
|
|
|
func (s *createdState) Start(ctx context.Context) error {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
if err := s.p.start(ctx); err != nil {
|
|
return err
|
|
}
|
|
return s.transition("running")
|
|
}
|
|
|
|
func (s *createdState) Delete(ctx context.Context) error {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
if err := s.p.delete(ctx); err != nil {
|
|
return err
|
|
}
|
|
return s.transition("deleted")
|
|
}
|
|
|
|
func (s *createdState) Kill(ctx context.Context, sig uint32, all bool) error {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
|
|
return s.p.kill(ctx, sig, all)
|
|
}
|
|
|
|
func (s *createdState) SetExited(status int) {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
|
|
s.p.setExited(status)
|
|
|
|
if err := s.transition("stopped"); err != nil {
|
|
panic(err)
|
|
}
|
|
}
|
|
|
|
func (s *createdState) Exec(ctx context.Context, path string, r *ExecConfig) (Process, error) {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
return s.p.exec(ctx, path, r)
|
|
}
|
|
|
|
type createdCheckpointState struct {
|
|
p *Init
|
|
opts *runc.RestoreOpts
|
|
}
|
|
|
|
func (s *createdCheckpointState) transition(name string) error {
|
|
switch name {
|
|
case "running":
|
|
s.p.initState = &runningState{p: s.p}
|
|
case "stopped":
|
|
s.p.initState = &stoppedState{p: s.p}
|
|
case "deleted":
|
|
s.p.initState = &deletedState{}
|
|
default:
|
|
return errors.Errorf("invalid state transition %q to %q", stateName(s), name)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (s *createdCheckpointState) Pause(ctx context.Context) error {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
|
|
return errors.Errorf("cannot pause task in created state")
|
|
}
|
|
|
|
func (s *createdCheckpointState) Resume(ctx context.Context) error {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
|
|
return errors.Errorf("cannot resume task in created state")
|
|
}
|
|
|
|
func (s *createdCheckpointState) Update(context context.Context, r *google_protobuf.Any) error {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
|
|
return s.p.update(context, r)
|
|
}
|
|
|
|
func (s *createdCheckpointState) Checkpoint(context context.Context, r *CheckpointConfig) error {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
|
|
return errors.Errorf("cannot checkpoint a task in created state")
|
|
}
|
|
|
|
func (s *createdCheckpointState) Resize(ws console.WinSize) error {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
|
|
return s.p.resize(ws)
|
|
}
|
|
|
|
func (s *createdCheckpointState) Start(ctx context.Context) error {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
p := s.p
|
|
sio := p.stdio
|
|
|
|
var (
|
|
err error
|
|
socket *runc.Socket
|
|
)
|
|
if sio.Terminal {
|
|
if socket, err = runc.NewTempConsoleSocket(); err != nil {
|
|
return errors.Wrap(err, "failed to create OCI runtime console socket")
|
|
}
|
|
defer socket.Close()
|
|
s.opts.ConsoleSocket = socket
|
|
}
|
|
|
|
if _, err := s.p.runtime.Restore(ctx, p.id, p.bundle, s.opts); err != nil {
|
|
return p.runtimeError(err, "OCI runtime restore failed")
|
|
}
|
|
if sio.Stdin != "" {
|
|
sc, err := fifo.OpenFifo(ctx, sio.Stdin, syscall.O_WRONLY|syscall.O_NONBLOCK, 0)
|
|
if err != nil {
|
|
return errors.Wrapf(err, "failed to open stdin fifo %s", sio.Stdin)
|
|
}
|
|
p.stdin = sc
|
|
p.closers = append(p.closers, sc)
|
|
}
|
|
var copyWaitGroup sync.WaitGroup
|
|
if socket != nil {
|
|
console, err := socket.ReceiveMaster()
|
|
if err != nil {
|
|
return errors.Wrap(err, "failed to retrieve console master")
|
|
}
|
|
console, err = p.platform.CopyConsole(ctx, console, sio.Stdin, sio.Stdout, sio.Stderr, &p.wg, ©WaitGroup)
|
|
if err != nil {
|
|
return errors.Wrap(err, "failed to start console copy")
|
|
}
|
|
p.console = console
|
|
} else if !sio.IsNull() {
|
|
if err := copyPipes(ctx, p.io, sio.Stdin, sio.Stdout, sio.Stderr, &p.wg, ©WaitGroup); err != nil {
|
|
return errors.Wrap(err, "failed to start io pipe copy")
|
|
}
|
|
}
|
|
|
|
copyWaitGroup.Wait()
|
|
pid, err := runc.ReadPidFile(s.opts.PidFile)
|
|
if err != nil {
|
|
return errors.Wrap(err, "failed to retrieve OCI runtime container pid")
|
|
}
|
|
p.pid = pid
|
|
return s.transition("running")
|
|
}
|
|
|
|
func (s *createdCheckpointState) Delete(ctx context.Context) error {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
if err := s.p.delete(ctx); err != nil {
|
|
return err
|
|
}
|
|
return s.transition("deleted")
|
|
}
|
|
|
|
func (s *createdCheckpointState) Kill(ctx context.Context, sig uint32, all bool) error {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
|
|
return s.p.kill(ctx, sig, all)
|
|
}
|
|
|
|
func (s *createdCheckpointState) SetExited(status int) {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
|
|
s.p.setExited(status)
|
|
|
|
if err := s.transition("stopped"); err != nil {
|
|
panic(err)
|
|
}
|
|
}
|
|
|
|
func (s *createdCheckpointState) Exec(ctx context.Context, path string, r *ExecConfig) (Process, error) {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
|
|
return nil, errors.Errorf("cannot exec in a created state")
|
|
}
|
|
|
|
type runningState struct {
|
|
p *Init
|
|
}
|
|
|
|
func (s *runningState) transition(name string) error {
|
|
switch name {
|
|
case "stopped":
|
|
s.p.initState = &stoppedState{p: s.p}
|
|
case "paused":
|
|
s.p.initState = &pausedState{p: s.p}
|
|
default:
|
|
return errors.Errorf("invalid state transition %q to %q", stateName(s), name)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (s *runningState) Pause(ctx context.Context) error {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
if err := s.p.pause(ctx); err != nil {
|
|
return err
|
|
}
|
|
return s.transition("paused")
|
|
}
|
|
|
|
func (s *runningState) Resume(ctx context.Context) error {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
|
|
return errors.Errorf("cannot resume a running process")
|
|
}
|
|
|
|
func (s *runningState) Update(context context.Context, r *google_protobuf.Any) error {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
|
|
return s.p.update(context, r)
|
|
}
|
|
|
|
func (s *runningState) Checkpoint(ctx context.Context, r *CheckpointConfig) error {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
|
|
return s.p.checkpoint(ctx, r)
|
|
}
|
|
|
|
func (s *runningState) Resize(ws console.WinSize) error {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
|
|
return s.p.resize(ws)
|
|
}
|
|
|
|
func (s *runningState) Start(ctx context.Context) error {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
|
|
return errors.Errorf("cannot start a running process")
|
|
}
|
|
|
|
func (s *runningState) Delete(ctx context.Context) error {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
|
|
return errors.Errorf("cannot delete a running process")
|
|
}
|
|
|
|
func (s *runningState) Kill(ctx context.Context, sig uint32, all bool) error {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
|
|
return s.p.kill(ctx, sig, all)
|
|
}
|
|
|
|
func (s *runningState) SetExited(status int) {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
|
|
s.p.setExited(status)
|
|
|
|
if err := s.transition("stopped"); err != nil {
|
|
panic(err)
|
|
}
|
|
}
|
|
|
|
func (s *runningState) Exec(ctx context.Context, path string, r *ExecConfig) (Process, error) {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
return s.p.exec(ctx, path, r)
|
|
}
|
|
|
|
type pausedState struct {
|
|
p *Init
|
|
}
|
|
|
|
func (s *pausedState) transition(name string) error {
|
|
switch name {
|
|
case "running":
|
|
s.p.initState = &runningState{p: s.p}
|
|
case "stopped":
|
|
s.p.initState = &stoppedState{p: s.p}
|
|
default:
|
|
return errors.Errorf("invalid state transition %q to %q", stateName(s), name)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (s *pausedState) Pause(ctx context.Context) error {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
|
|
return errors.Errorf("cannot pause a paused container")
|
|
}
|
|
|
|
func (s *pausedState) Resume(ctx context.Context) error {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
|
|
if err := s.p.resume(ctx); err != nil {
|
|
return err
|
|
}
|
|
return s.transition("running")
|
|
}
|
|
|
|
func (s *pausedState) Update(context context.Context, r *google_protobuf.Any) error {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
|
|
return s.p.update(context, r)
|
|
}
|
|
|
|
func (s *pausedState) Checkpoint(ctx context.Context, r *CheckpointConfig) error {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
|
|
return s.p.checkpoint(ctx, r)
|
|
}
|
|
|
|
func (s *pausedState) Resize(ws console.WinSize) error {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
|
|
return s.p.resize(ws)
|
|
}
|
|
|
|
func (s *pausedState) Start(ctx context.Context) error {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
|
|
return errors.Errorf("cannot start a paused process")
|
|
}
|
|
|
|
func (s *pausedState) Delete(ctx context.Context) error {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
|
|
return errors.Errorf("cannot delete a paused process")
|
|
}
|
|
|
|
func (s *pausedState) Kill(ctx context.Context, sig uint32, all bool) error {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
|
|
return s.p.kill(ctx, sig, all)
|
|
}
|
|
|
|
func (s *pausedState) SetExited(status int) {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
|
|
s.p.setExited(status)
|
|
|
|
if err := s.transition("stopped"); err != nil {
|
|
panic(err)
|
|
}
|
|
}
|
|
|
|
func (s *pausedState) Exec(ctx context.Context, path string, r *ExecConfig) (Process, error) {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
|
|
return nil, errors.Errorf("cannot exec in a paused state")
|
|
}
|
|
|
|
type stoppedState struct {
|
|
p *Init
|
|
}
|
|
|
|
func (s *stoppedState) transition(name string) error {
|
|
switch name {
|
|
case "deleted":
|
|
s.p.initState = &deletedState{}
|
|
default:
|
|
return errors.Errorf("invalid state transition %q to %q", stateName(s), name)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (s *stoppedState) Pause(ctx context.Context) error {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
|
|
return errors.Errorf("cannot pause a stopped container")
|
|
}
|
|
|
|
func (s *stoppedState) Resume(ctx context.Context) error {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
|
|
return errors.Errorf("cannot resume a stopped container")
|
|
}
|
|
|
|
func (s *stoppedState) Update(context context.Context, r *google_protobuf.Any) error {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
|
|
return errors.Errorf("cannot update a stopped container")
|
|
}
|
|
|
|
func (s *stoppedState) Checkpoint(ctx context.Context, r *CheckpointConfig) error {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
|
|
return errors.Errorf("cannot checkpoint a stopped container")
|
|
}
|
|
|
|
func (s *stoppedState) Resize(ws console.WinSize) error {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
|
|
return errors.Errorf("cannot resize a stopped container")
|
|
}
|
|
|
|
func (s *stoppedState) Start(ctx context.Context) error {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
|
|
return errors.Errorf("cannot start a stopped process")
|
|
}
|
|
|
|
func (s *stoppedState) Delete(ctx context.Context) error {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
if err := s.p.delete(ctx); err != nil {
|
|
return err
|
|
}
|
|
return s.transition("deleted")
|
|
}
|
|
|
|
func (s *stoppedState) Kill(ctx context.Context, sig uint32, all bool) error {
|
|
return errdefs.ToGRPCf(errdefs.ErrNotFound, "process %s not found", s.p.id)
|
|
}
|
|
|
|
func (s *stoppedState) SetExited(status int) {
|
|
// no op
|
|
}
|
|
|
|
func (s *stoppedState) Exec(ctx context.Context, path string, r *ExecConfig) (Process, error) {
|
|
s.p.mu.Lock()
|
|
defer s.p.mu.Unlock()
|
|
|
|
return nil, errors.Errorf("cannot exec in a stopped state")
|
|
}
|