Add containerd shim v2 support. (#13)

* Update vendors

Signed-off-by: Lantao Liu <lantaol@google.com>

* Add containerd shim v2 support.

Signed-off-by: Lantao Liu <lantaol@google.com>

* Add test and doc for containerd-shim-runsc-v1.

Signed-off-by: Lantao Liu <lantaol@google.com>

* Address comments.

1 files changed, 53 insertions, 0 deletions

diff --git a/pkg/v1/proc/deleted_state.go b/pkg/v1/proc/deleted_state.go
new file mode 100644
index 000000000..c92a443a2
--- /dev/null
+++ b/pkg/v1/proc/deleted_state.go
@@ -0,0 +1,53 @@
+/*
+Copyright The containerd Authors.
+Copyright 2018 Google LLC
+
+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
+
+    https://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"
+
+	"github.com/containerd/console"
+	"github.com/containerd/containerd/runtime/proc"
+	"github.com/pkg/errors"
+)
+
+type deletedState struct {
+}
+
+func (s *deletedState) Resize(ws console.WinSize) error {
+	return errors.Errorf("cannot resize a deleted process")
+}
+
+func (s *deletedState) Start(ctx context.Context) error {
+	return errors.Errorf("cannot start a deleted process")
+}
+
+func (s *deletedState) Delete(ctx context.Context) error {
+	return errors.Errorf("cannot delete a deleted process")
+}
+
+func (s *deletedState) Kill(ctx context.Context, sig uint32, all bool) error {
+	return errors.Errorf("cannot kill a deleted process")
+}
+
+func (s *deletedState) SetExited(status int) {
+	// no op
+}
+
+func (s *deletedState) Exec(ctx context.Context, path string, r *ExecConfig) (proc.Process, error) {
+	return nil, errors.Errorf("cannot exec in a deleted state")
+}