update containerd to v1.2.1, runc to v1.0.0-rc6

Signed-off-by: Akihiro Suda <suda.akihiro@lab.ntt.co.jp>

README.md

@@ -252,7 +252,7 @@ export JAEGER_TRACE=0.0.0.0:6831
 
 ### Supported runc version
 
-During development, BuildKit is tested with the version of runc that is being used by the containerd repository. Please refer to [runc.md](https://github.com/containerd/containerd/blob/v1.2.0-rc.1/RUNC.md) for more information.
+During development, BuildKit is tested with the version of runc that is being used by the containerd repository. Please refer to [runc.md](https://github.com/containerd/containerd/blob/v1.2.1/RUNC.md) for more information.
 
 ### Running BuildKit without root privileges
 

examples/buildkit0/buildkit.go

@@ -17,8 +17,8 @@ type buildOpt struct {
 func main() {
 	var opt buildOpt
 	flag.BoolVar(&opt.withContainerd, "with-containerd", true, "enable containerd worker")
-	flag.StringVar(&opt.containerd, "containerd", "v1.2.0-rc.1", "containerd version")
+	flag.StringVar(&opt.containerd, "containerd", "v1.2.1", "containerd version")
-	flag.StringVar(&opt.runc, "runc", "a00bf0190895aa465a5fbed0268888e2c8ddfe85", "runc version")
+	flag.StringVar(&opt.runc, "runc", "v1.0.0-rc6", "runc version")
 	flag.Parse()
 
 	bk := buildkit(opt)

examples/buildkit1/buildkit.go

@@ -17,8 +17,8 @@ type buildOpt struct {
 func main() {
 	var opt buildOpt
 	flag.BoolVar(&opt.withContainerd, "with-containerd", true, "enable containerd worker")
-	flag.StringVar(&opt.containerd, "containerd", "v1.2.0-rc.1", "containerd version")
+	flag.StringVar(&opt.containerd, "containerd", "v1.2.1", "containerd version")
-	flag.StringVar(&opt.runc, "runc", "a00bf0190895aa465a5fbed0268888e2c8ddfe85", "runc version")
+	flag.StringVar(&opt.runc, "runc", "v1.0.0-rc6", "runc version")
 	flag.Parse()
 
 	bk := buildkit(opt)

examples/buildkit2/buildkit.go

@@ -17,8 +17,8 @@ type buildOpt struct {
 func main() {
 	var opt buildOpt
 	flag.BoolVar(&opt.withContainerd, "with-containerd", true, "enable containerd worker")
-	flag.StringVar(&opt.containerd, "containerd", "v1.2.0-rc.1", "containerd version")
+	flag.StringVar(&opt.containerd, "containerd", "v1.2.1", "containerd version")
-	flag.StringVar(&opt.runc, "runc", "a00bf0190895aa465a5fbed0268888e2c8ddfe85", "runc version")
+	flag.StringVar(&opt.runc, "runc", "v1.0.0-rc6", "runc version")
 	flag.Parse()
 
 	bk := buildkit(opt)

examples/buildkit3/buildkit.go

@@ -18,8 +18,8 @@ type buildOpt struct {
 func main() {
 	var opt buildOpt
 	flag.BoolVar(&opt.withContainerd, "with-containerd", true, "enable containerd worker")
-	flag.StringVar(&opt.containerd, "containerd", "v1.2.0-rc.1", "containerd version")
+	flag.StringVar(&opt.containerd, "containerd", "v1.2.1", "containerd version")
-	flag.StringVar(&opt.runc, "runc", "a00bf0190895aa465a5fbed0268888e2c8ddfe85", "runc version")
+	flag.StringVar(&opt.runc, "runc", "v1.0.0-rc6", "runc version")
 	flag.StringVar(&opt.buildkit, "buildkit", "master", "buildkit version")
 	flag.Parse()
 

examples/gobuild/main.go

@@ -43,7 +43,7 @@ func run() error {
 	_ = buildkitd
 
 	containerd, err := gb.BuildExe(gobuild.BuildOpt{
-		Source:    llb.Git("github.com/containerd/containerd", "v1.2.0-rc.1"),
+		Source:    llb.Git("github.com/containerd/containerd", "v1.2.1"),
 		MountPath: "/go/src/github.com/containerd/containerd",
 		Pkg:       "github.com/containerd/containerd/cmd/containerd",
 		BuildTags: []string{"no_btrfs"},

hack/dockerfiles/test.Dockerfile

@@ -1,5 +1,5 @@
-ARG RUNC_VERSION=a00bf0190895aa465a5fbed0268888e2c8ddfe85
+ARG RUNC_VERSION=v1.0.0-rc6
-ARG CONTAINERD_VERSION=v1.2.0-rc.1
+ARG CONTAINERD_VERSION=v1.2.1
 # containerd v1.0 for integration tests
 ARG CONTAINERD10_VERSION=v1.0.3
 # available targets: buildkitd, buildkitd.oci_only, buildkitd.containerd_only

hack/dockerfiles/test.buildkit.Dockerfile

@@ -1,7 +1,7 @@
 # syntax = tonistiigi/dockerfile:runmount20180925
 
-ARG RUNC_VERSION=a00bf0190895aa465a5fbed0268888e2c8ddfe85
+ARG RUNC_VERSION=v1.0.0-rc6
-ARG CONTAINERD_VERSION=v1.2.0-rc.1
+ARG CONTAINERD_VERSION=v1.2.1
 # containerd v1.0 for integration tests
 ARG CONTAINERD10_VERSION=v1.0.3
 # available targets: buildkitd, buildkitd.oci_only, buildkitd.containerd_only

vendor.conf

@@ -6,10 +6,10 @@ github.com/davecgh/go-spew v1.1.0
 github.com/pmezard/go-difflib v1.0.0
 golang.org/x/sys 1b2967e3c290b7c545b3db0deeda16e9be4f98a2
 
-github.com/containerd/containerd 1a5f9a3434ac53c0e9d27093ecc588e0c281c333
+github.com/containerd/containerd 47b328aab79146a9e81e37704db60e7e04a09256
 github.com/containerd/typeurl a93fcdb778cd272c6e9b3028b2f42d813e785d40
 golang.org/x/sync 450f422ab23cf9881c94e2db30cac0eb1b7cf80c
-github.com/sirupsen/logrus v1.0.0
+github.com/sirupsen/logrus v1.0.3
 google.golang.org/grpc v1.12.0
 github.com/opencontainers/go-digest c9281466c8b2f606084ac71339773efd177436e7
 golang.org/x/net 0ed95abb35c445290478a5348a7b38bb154135fd
@@ -18,7 +18,7 @@ github.com/gogo/googleapis b23578765ee54ff6bceff57f397d833bf4ca6869
 github.com/golang/protobuf v1.1.0
 github.com/containerd/continuity bd77b46c8352f74eb12c85bdc01f4b90f69d66b4
 github.com/opencontainers/image-spec v1.0.1
-github.com/opencontainers/runc a00bf0190895aa465a5fbed0268888e2c8ddfe85
+github.com/opencontainers/runc 96ec2177ae841256168fcf76954f7177af9446eb
 github.com/Microsoft/go-winio v0.4.11
 github.com/containerd/fifo 3d5202aec260678c48179c56f40e6f38a095738c
 github.com/opencontainers/runtime-spec eba862dc2470385a233c7507392675cbeadf7353 # v1.0.1-45-geba862d
@@ -30,7 +30,7 @@ github.com/docker/go-events 9461782956ad83b30282bf90e31fa6a70c255ba9
 github.com/syndtr/gocapability db04d3cc01c8b54962a58ec7e491717d06cfcc16
 github.com/Microsoft/hcsshim v0.7.9
 golang.org/x/crypto 0709b304e793a5edb4a2c0145f281ecdc20838a4
-github.com/containerd/cri 8506fe836677cc3bb23a16b68145128243d843b5 # release/1.2 branch
+github.com/containerd/cri f913714917d2456d7e65a0be84962b1ce8acb487 # release/1.2 branch
 
 github.com/urfave/cli 7bc6a0acffa589f415f88aca16cc1de5ffd66f9c
 github.com/morikuni/aec 39771216ff4c63d11f5e604076f9c45e8be1067b

vendor/github.com/containerd/containerd/README.md

@@ -1,4 +1,4 @@
-![banner](https://github.com/containerd/containerd.io/blob/master/static/img/containerd-dark.png?raw=true)
+![containerd banner](https://raw.githubusercontent.com/cncf/artwork/master/containerd/horizontal/color/containerd-horizontal-color.png)
 
 [![GoDoc](https://godoc.org/github.com/containerd/containerd?status.svg)](https://godoc.org/github.com/containerd/containerd)
 [![Build Status](https://travis-ci.org/containerd/containerd.svg?branch=master)](https://travis-ci.org/containerd/containerd)
@@ -224,7 +224,8 @@ This will be the best place to discuss design and implementation.
 
 For sync communication we have a community slack with a #containerd channel that everyone is welcome to join and chat about development.
 
-**Slack:** https://join.slack.com/t/dockercommunity/shared_invite/enQtNDM4NjAwNDMyOTUwLWZlMDZmYWRjZjk4Zjc5ZGQ5NWZkOWI1Yjk2NGE3ZWVlYjYxM2VhYjczOWIyZDFhZTE3NTUwZWQzMjhmNGYyZTg
+**Slack:** Catch us in the #containerd and #containerd-dev channels on dockercommunity.slack.com.
+[Click here for an invite to docker community slack.](https://join.slack.com/t/dockercommunity/shared_invite/enQtNDY4MDc1Mzc0MzIwLTgxZDBlMmM4ZGEyNDc1N2FkMzlhODJkYmE1YTVkYjM1MDE3ZjAwZjBkOGFlOTJkZjRmZGYzNjYyY2M3ZTUxYzQ)
 
 ### Reporting security issues
 
@@ -236,3 +237,21 @@ The containerd codebase is released under the [Apache 2.0 license](LICENSE.code)
 The README.md file, and files in the "docs" folder are licensed under the
 Creative Commons Attribution 4.0 International License. You may obtain a
 copy of the license, titled CC-BY-4.0, at http://creativecommons.org/licenses/by/4.0/.
+
+## Project details
+
+**containerd** is the primary open source project within the broader containerd GitHub repository.
+However, all projects within the repo have common maintainership, governance, and contributing
+guidelines which are stored in a `project` repository commonly for all containerd projects.
+
+Please find all these core project documents, including the:
+ * [Project governance](https://github.com/containerd/project/blob/master/GOVERNANCE.md),
+ * [Maintainers](https://github.com/containerd/project/blob/master/MAINTAINERS),
+ * and [Contributing guidelines](https://github.com/containerd/project/blob/master/CONTRIBUTING.md)
+
+information in our [`containerd/project`](https://github.com/containerd/project) repository.
+
+## Adoption
+
+Interested to see who is using containerd? Are you using containerd in a project?
+Please add yourself via pull request to our [ADOPTERS.md](./ADOPTERS.md) file.

vendor/github.com/containerd/containerd/archive/tar.go

@@ -100,7 +100,7 @@ const (
 	// readdir calls to this directory do not follow to lower layers.
 	whiteoutOpaqueDir = whiteoutMetaPrefix + ".opq"
 
-	paxSchilyXattr = "SCHILY.xattrs."
+	paxSchilyXattr = "SCHILY.xattr."
 )
 
 // Apply applies a tar stream of an OCI style diff tar.
@@ -295,7 +295,7 @@ func applyNaive(ctx context.Context, root string, tr *tar.Reader, options ApplyO
 			linkBasename := filepath.Base(hdr.Linkname)
 			srcHdr = aufsHardlinks[linkBasename]
 			if srcHdr == nil {
-				return 0, fmt.Errorf("Invalid aufs hardlink")
+				return 0, fmt.Errorf("invalid aufs hardlink")
 			}
 			p, err := fs.RootPath(aufsTempdir, linkBasename)
 			if err != nil {

vendor/github.com/containerd/containerd/archive/time_unix.go

@@ -1,4 +1,4 @@
-// +build linux freebsd solaris
+// +build freebsd linux openbsd solaris
 
 /*
    Copyright The containerd Authors.

vendor/github.com/containerd/containerd/client.go

@@ -17,7 +17,9 @@
 package containerd
 
 import (
+	"bytes"
 	"context"
+	"encoding/json"
 	"fmt"
 	"net/http"
 	"runtime"
@@ -520,6 +522,45 @@ func (c *Client) ListImages(ctx context.Context, filters ...string) ([]Image, er
 	return images, nil
 }
 
+// Restore restores a container from a checkpoint
+func (c *Client) Restore(ctx context.Context, id string, checkpoint Image, opts ...RestoreOpts) (Container, error) {
+	store := c.ContentStore()
+	index, err := decodeIndex(ctx, store, checkpoint.Target())
+	if err != nil {
+		return nil, err
+	}
+
+	ctx, done, err := c.WithLease(ctx)
+	if err != nil {
+		return nil, err
+	}
+	defer done(ctx)
+
+	copts := []NewContainerOpts{}
+	for _, o := range opts {
+		copts = append(copts, o(ctx, id, c, checkpoint, index))
+	}
+
+	ctr, err := c.NewContainer(ctx, id, copts...)
+	if err != nil {
+		return nil, err
+	}
+
+	return ctr, nil
+}
+
+func writeIndex(ctx context.Context, index *ocispec.Index, client *Client, ref string) (d ocispec.Descriptor, err error) {
+	labels := map[string]string{}
+	for i, m := range index.Manifests {
+		labels[fmt.Sprintf("containerd.io/gc.ref.content.%d", i)] = m.Digest.String()
+	}
+	data, err := json.Marshal(index)
+	if err != nil {
+		return ocispec.Descriptor{}, err
+	}
+	return writeContent(ctx, client.ContentStore(), ocispec.MediaTypeImageIndex, ref, bytes.NewReader(data), content.WithLabels(labels))
+}
+
 // Subscribe to events that match one or more of the provided filters.
 //
 // Callers should listen on both the envelope and errs channels. If the errs

vendor/github.com/containerd/containerd/container.go

@@ -28,12 +28,22 @@ import (
 	"github.com/containerd/containerd/cio"
 	"github.com/containerd/containerd/containers"
 	"github.com/containerd/containerd/errdefs"
+	"github.com/containerd/containerd/images"
 	"github.com/containerd/containerd/oci"
+	"github.com/containerd/containerd/runtime/v2/runc/options"
 	"github.com/containerd/typeurl"
 	prototypes "github.com/gogo/protobuf/types"
+	ver "github.com/opencontainers/image-spec/specs-go"
+	ocispec "github.com/opencontainers/image-spec/specs-go/v1"
 	"github.com/pkg/errors"
 )
 
+const (
+	checkpointImageNameLabel       = "org.opencontainers.image.ref.name"
+	checkpointRuntimeNameLabel     = "io.containerd.checkpoint.runtime"
+	checkpointSnapshotterNameLabel = "io.containerd.checkpoint.snapshotter"
+)
+
 // Container is a metadata object for container resources and task creation
 type Container interface {
 	// ID identifies the container
@@ -64,6 +74,8 @@ type Container interface {
 	Extensions(context.Context) (map[string]prototypes.Any, error)
 	// Update a container
 	Update(context.Context, ...UpdateContainerOpts) error
+	// Checkpoint creates a checkpoint image of the current container
+	Checkpoint(context.Context, string, ...CheckpointOpts) (Image, error)
 }
 
 func containerFromRecord(client *Client, c containers.Container) *container {
@@ -272,6 +284,70 @@ func (c *container) Update(ctx context.Context, opts ...UpdateContainerOpts) err
 	return nil
 }
 
+func (c *container) Checkpoint(ctx context.Context, ref string, opts ...CheckpointOpts) (Image, error) {
+	index := &ocispec.Index{
+		Versioned: ver.Versioned{
+			SchemaVersion: 2,
+		},
+		Annotations: make(map[string]string),
+	}
+	copts := &options.CheckpointOptions{
+		Exit:                false,
+		OpenTcp:             false,
+		ExternalUnixSockets: false,
+		Terminal:            false,
+		FileLocks:           true,
+		EmptyNamespaces:     nil,
+	}
+	info, err := c.Info(ctx)
+	if err != nil {
+		return nil, err
+	}
+
+	img, err := c.Image(ctx)
+	if err != nil {
+		return nil, err
+	}
+
+	ctx, done, err := c.client.WithLease(ctx)
+	if err != nil {
+		return nil, err
+	}
+	defer done(ctx)
+
+	// add image name to manifest
+	index.Annotations[checkpointImageNameLabel] = img.Name()
+	// add runtime info to index
+	index.Annotations[checkpointRuntimeNameLabel] = info.Runtime.Name
+	// add snapshotter info to index
+	index.Annotations[checkpointSnapshotterNameLabel] = info.Snapshotter
+
+	// process remaining opts
+	for _, o := range opts {
+		if err := o(ctx, c.client, &info, index, copts); err != nil {
+			err = errdefs.FromGRPC(err)
+			if !errdefs.IsAlreadyExists(err) {
+				return nil, err
+			}
+		}
+	}
+
+	desc, err := writeIndex(ctx, index, c.client, c.ID()+"index")
+	if err != nil {
+		return nil, err
+	}
+	i := images.Image{
+		Name:   ref,
+		Target: desc,
+	}
+	checkpoint, err := c.client.ImageService().Create(ctx, i)
+	if err != nil {
+		return nil, err
+	}
+
+	return NewImage(c.client, checkpoint), nil
+}
+
 func (c *container) loadTask(ctx context.Context, ioAttach cio.Attach) (Task, error) {
 	response, err := c.client.TaskService().Get(ctx, &tasks.GetRequest{
 		ContainerID: c.id,

vendor/github.com/containerd/containerd/container_checkpoint_opts.go

@@ -0,0 +1,155 @@
+/*
+   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 containerd
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"runtime"
+
+	tasks "github.com/containerd/containerd/api/services/tasks/v1"
+	"github.com/containerd/containerd/containers"
+	"github.com/containerd/containerd/diff"
+	"github.com/containerd/containerd/images"
+	"github.com/containerd/containerd/platforms"
+	"github.com/containerd/containerd/rootfs"
+	"github.com/containerd/containerd/runtime/v2/runc/options"
+	"github.com/containerd/typeurl"
+	imagespec "github.com/opencontainers/image-spec/specs-go/v1"
+	"github.com/pkg/errors"
+)
+
+var (
+	// ErrCheckpointRWUnsupported is returned if the container runtime does not support checkpoint
+	ErrCheckpointRWUnsupported = errors.New("rw checkpoint is only supported on v2 runtimes")
+	// ErrMediaTypeNotFound returns an error when a media type in the manifest is unknown
+	ErrMediaTypeNotFound = errors.New("media type not found")
+)
+
+// CheckpointOpts are options to manage the checkpoint operation
+type CheckpointOpts func(context.Context, *Client, *containers.Container, *imagespec.Index, *options.CheckpointOptions) error
+
+// WithCheckpointImage includes the container image in the checkpoint
+func WithCheckpointImage(ctx context.Context, client *Client, c *containers.Container, index *imagespec.Index, copts *options.CheckpointOptions) error {
+	ir, err := client.ImageService().Get(ctx, c.Image)
+	if err != nil {
+		return err
+	}
+	index.Manifests = append(index.Manifests, ir.Target)
+	return nil
+}
+
+// WithCheckpointTask includes the running task
+func WithCheckpointTask(ctx context.Context, client *Client, c *containers.Container, index *imagespec.Index, copts *options.CheckpointOptions) error {
+	any, err := typeurl.MarshalAny(copts)
+	if err != nil {
+		return nil
+	}
+	task, err := client.TaskService().Checkpoint(ctx, &tasks.CheckpointTaskRequest{
+		ContainerID: c.ID,
+		Options:     any,
+	})
+	if err != nil {
+		return err
+	}
+	for _, d := range task.Descriptors {
+		platformSpec := platforms.DefaultSpec()
+		index.Manifests = append(index.Manifests, imagespec.Descriptor{
+			MediaType: d.MediaType,
+			Size:      d.Size_,
+			Digest:    d.Digest,
+			Platform:  &platformSpec,
+		})
+	}
+	// save copts
+	data, err := any.Marshal()
+	if err != nil {
+		return err
+	}
+	r := bytes.NewReader(data)
+	desc, err := writeContent(ctx, client.ContentStore(), images.MediaTypeContainerd1CheckpointOptions, c.ID+"-checkpoint-options", r)
+	if err != nil {
+		return err
+	}
+	desc.Platform = &imagespec.Platform{
+		OS:           runtime.GOOS,
+		Architecture: runtime.GOARCH,
+	}
+	index.Manifests = append(index.Manifests, desc)
+	return nil
+}
+
+// WithCheckpointRuntime includes the container runtime info
+func WithCheckpointRuntime(ctx context.Context, client *Client, c *containers.Container, index *imagespec.Index, copts *options.CheckpointOptions) error {
+	if c.Runtime.Options != nil {
+		data, err := c.Runtime.Options.Marshal()
+		if err != nil {
+			return err
+		}
+		r := bytes.NewReader(data)
+		desc, err := writeContent(ctx, client.ContentStore(), images.MediaTypeContainerd1CheckpointRuntimeOptions, c.ID+"-runtime-options", r)
+		if err != nil {
+			return err
+		}
+		desc.Platform = &imagespec.Platform{
+			OS:           runtime.GOOS,
+			Architecture: runtime.GOARCH,
+		}
+		index.Manifests = append(index.Manifests, desc)
+	}
+	return nil
+}
+
+// WithCheckpointRW includes the rw in the checkpoint
+func WithCheckpointRW(ctx context.Context, client *Client, c *containers.Container, index *imagespec.Index, copts *options.CheckpointOptions) error {
+	diffOpts := []diff.Opt{
+		diff.WithReference(fmt.Sprintf("checkpoint-rw-%s", c.SnapshotKey)),
+	}
+	rw, err := rootfs.CreateDiff(ctx,
+		c.SnapshotKey,
+		client.SnapshotService(c.Snapshotter),
+		client.DiffService(),
+		diffOpts...,
+	)
+	if err != nil {
+		return err
+
+	}
+	rw.Platform = &imagespec.Platform{
+		OS:           runtime.GOOS,
+		Architecture: runtime.GOARCH,
+	}
+	index.Manifests = append(index.Manifests, rw)
+	return nil
+}
+
+// WithCheckpointTaskExit causes the task to exit after checkpoint
+func WithCheckpointTaskExit(ctx context.Context, client *Client, c *containers.Container, index *imagespec.Index, copts *options.CheckpointOptions) error {
+	copts.Exit = true
+	return nil
+}
+
+// GetIndexByMediaType returns the index in a manifest for the specified media type
+func GetIndexByMediaType(index *imagespec.Index, mt string) (*imagespec.Descriptor, error) {
+	for _, d := range index.Manifests {
+		if d.MediaType == mt {
+			return &d, nil
+		}
+	}
+	return nil, ErrMediaTypeNotFound
+}

vendor/github.com/containerd/containerd/container_opts_unix.go

@@ -26,81 +26,12 @@ import (
 	"syscall"
 
 	"github.com/containerd/containerd/containers"
-	"github.com/containerd/containerd/content"
 	"github.com/containerd/containerd/errdefs"
-	"github.com/containerd/containerd/images"
 	"github.com/containerd/containerd/mount"
 	"github.com/containerd/containerd/platforms"
-	"github.com/gogo/protobuf/proto"
-	protobuf "github.com/gogo/protobuf/types"
 	"github.com/opencontainers/image-spec/identity"
-	"github.com/opencontainers/image-spec/specs-go/v1"
-	"github.com/pkg/errors"
 )
 
-// WithCheckpoint allows a container to be created from the checkpointed information
-// provided by the descriptor. The image, snapshot, and runtime specifications are
-// restored on the container
-func WithCheckpoint(im Image, snapshotKey string) NewContainerOpts {
-	// set image and rw, and spec
-	return func(ctx context.Context, client *Client, c *containers.Container) error {
-		var (
-			desc  = im.Target()
-			store = client.ContentStore()
-		)
-		index, err := decodeIndex(ctx, store, desc)
-		if err != nil {
-			return err
-		}
-		var rw *v1.Descriptor
-		for _, m := range index.Manifests {
-			switch m.MediaType {
-			case v1.MediaTypeImageLayer:
-				fk := m
-				rw = &fk
-			case images.MediaTypeDockerSchema2Manifest, images.MediaTypeDockerSchema2ManifestList:
-				config, err := images.Config(ctx, store, m, platforms.Default())
-				if err != nil {
-					return errors.Wrap(err, "unable to resolve image config")
-				}
-				diffIDs, err := images.RootFS(ctx, store, config)
-				if err != nil {
-					return errors.Wrap(err, "unable to get rootfs")
-				}
-				setSnapshotterIfEmpty(c)
-				if _, err := client.SnapshotService(c.Snapshotter).Prepare(ctx, snapshotKey, identity.ChainID(diffIDs).String()); err != nil {
-					if !errdefs.IsAlreadyExists(err) {
-						return err
-					}
-				}
-				c.Image = index.Annotations["image.name"]
-			case images.MediaTypeContainerd1CheckpointConfig:
-				data, err := content.ReadBlob(ctx, store, m)
-				if err != nil {
-					return errors.Wrap(err, "unable to read checkpoint config")
-				}
-				var any protobuf.Any
-				if err := proto.Unmarshal(data, &any); err != nil {
-					return err
-				}
-				c.Spec = &any
-			}
-		}
-		if rw != nil {
-			// apply the rw snapshot to the new rw layer
-			mounts, err := client.SnapshotService(c.Snapshotter).Mounts(ctx, snapshotKey)
-			if err != nil {
-				return errors.Wrapf(err, "unable to get mounts for %s", snapshotKey)
-			}
-			if _, err := client.DiffService().Apply(ctx, *rw, mounts); err != nil {
-				return errors.Wrap(err, "unable to apply rw diff")
-			}
-		}
-		c.SnapshotKey = snapshotKey
-		return nil
-	}
-}
-
 // WithRemappedSnapshot creates a new snapshot and remaps the uid/gid for the
 // filesystem to be used by a container with user namespaces
 func WithRemappedSnapshot(id string, i Image, uid, gid uint32) NewContainerOpts {

vendor/github.com/containerd/containerd/container_restore_opts.go

@@ -0,0 +1,150 @@
+/*
+   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 containerd
+
+import (
+	"context"
+
+	"github.com/containerd/containerd/containers"
+	"github.com/containerd/containerd/content"
+	"github.com/containerd/containerd/images"
+	"github.com/containerd/containerd/platforms"
+	"github.com/gogo/protobuf/proto"
+	ptypes "github.com/gogo/protobuf/types"
+	"github.com/opencontainers/image-spec/identity"
+	imagespec "github.com/opencontainers/image-spec/specs-go/v1"
+	"github.com/pkg/errors"
+)
+
+var (
+	// ErrImageNameNotFoundInIndex is returned when the image name is not found in the index
+	ErrImageNameNotFoundInIndex = errors.New("image name not found in index")
+	// ErrRuntimeNameNotFoundInIndex is returned when the runtime is not found in the index
+	ErrRuntimeNameNotFoundInIndex = errors.New("runtime not found in index")
+	// ErrSnapshotterNameNotFoundInIndex is returned when the snapshotter is not found in the index
+	ErrSnapshotterNameNotFoundInIndex = errors.New("snapshotter not found in index")
+)
+
+// RestoreOpts are options to manage the restore operation
+type RestoreOpts func(context.Context, string, *Client, Image, *imagespec.Index) NewContainerOpts
+
+// WithRestoreImage restores the image for the container
+func WithRestoreImage(ctx context.Context, id string, client *Client, checkpoint Image, index *imagespec.Index) NewContainerOpts {
+	return func(ctx context.Context, client *Client, c *containers.Container) error {
+		name, ok := index.Annotations[checkpointImageNameLabel]
+		if !ok || name == "" {
+			return ErrRuntimeNameNotFoundInIndex
+		}
+		snapshotter, ok := index.Annotations[checkpointSnapshotterNameLabel]
+		if !ok || name == "" {
+			return ErrSnapshotterNameNotFoundInIndex
+		}
+		i, err := client.GetImage(ctx, name)
+		if err != nil {
+			return err
+		}
+
+		diffIDs, err := i.(*image).i.RootFS(ctx, client.ContentStore(), platforms.Default())
+		if err != nil {
+			return err
+		}
+		parent := identity.ChainID(diffIDs).String()
+		if _, err := client.SnapshotService(snapshotter).Prepare(ctx, id, parent); err != nil {
+			return err
+		}
+		c.Image = i.Name()
+		c.SnapshotKey = id
+		c.Snapshotter = snapshotter
+		return nil
+	}
+}
+
+// WithRestoreRuntime restores the runtime for the container
+func WithRestoreRuntime(ctx context.Context, id string, client *Client, checkpoint Image, index *imagespec.Index) NewContainerOpts {
+	return func(ctx context.Context, client *Client, c *containers.Container) error {
+		name, ok := index.Annotations[checkpointRuntimeNameLabel]
+		if !ok {
+			return ErrRuntimeNameNotFoundInIndex
+		}
+
+		// restore options if present
+		m, err := GetIndexByMediaType(index, images.MediaTypeContainerd1CheckpointRuntimeOptions)
+		if err != nil {
+			if err != ErrMediaTypeNotFound {
+				return err
+			}
+		}
+		var options *ptypes.Any
+		if m != nil {
+			store := client.ContentStore()
+			data, err := content.ReadBlob(ctx, store, *m)
+			if err != nil {
+				return errors.Wrap(err, "unable to read checkpoint runtime")
+			}
+			if err := proto.Unmarshal(data, options); err != nil {
+				return err
+			}
+		}
+
+		c.Runtime = containers.RuntimeInfo{
+			Name:    name,
+			Options: options,
+		}
+		return nil
+	}
+}
+
+// WithRestoreSpec restores the spec from the checkpoint for the container
+func WithRestoreSpec(ctx context.Context, id string, client *Client, checkpoint Image, index *imagespec.Index) NewContainerOpts {
+	return func(ctx context.Context, client *Client, c *containers.Container) error {
+		m, err := GetIndexByMediaType(index, images.MediaTypeContainerd1CheckpointConfig)
+		if err != nil {
+			return err
+		}
+		store := client.ContentStore()
+		data, err := content.ReadBlob(ctx, store, *m)
+		if err != nil {
+			return errors.Wrap(err, "unable to read checkpoint config")
+		}
+		var any ptypes.Any
+		if err := proto.Unmarshal(data, &any); err != nil {
+			return err
+		}
+		c.Spec = &any
+		return nil
+	}
+}
+
+// WithRestoreRW restores the rw layer from the checkpoint for the container
+func WithRestoreRW(ctx context.Context, id string, client *Client, checkpoint Image, index *imagespec.Index) NewContainerOpts {
+	return func(ctx context.Context, client *Client, c *containers.Container) error {
+		// apply rw layer
+		rw, err := GetIndexByMediaType(index, imagespec.MediaTypeImageLayerGzip)
+		if err != nil {
+			return err
+		}
+		mounts, err := client.SnapshotService(c.Snapshotter).Mounts(ctx, c.SnapshotKey)
+		if err != nil {
+			return err
+		}
+
+		if _, err := client.DiffService().Apply(ctx, *rw, mounts); err != nil {
+			return err
+		}
+		return nil
+	}
+}

vendor/github.com/containerd/containerd/content/content.go

@@ -110,8 +110,9 @@ type IngestManager interface {
 
 // Writer handles the write of content into a content store
 type Writer interface {
-	// Close is expected to be called after Commit() when commission is needed.
+	// Close closes the writer, if the writer has not been
-	// Closing a writer without commit allows resuming or aborting.
+	// committed this allows resuming or aborting.
+	// Calling Close on a closed writer will not error.
 	io.WriteCloser
 
 	// Digest may return empty digest or panics until committed.
@@ -119,6 +120,8 @@ type Writer interface {
 
 	// Commit commits the blob (but no roll-back is guaranteed on an error).
 	// size and expected can be zero-value when unknown.
+	// Commit always closes the writer, even on error.
+	// ErrAlreadyExists aborts the writer.
 	Commit(ctx context.Context, size int64, expected digest.Digest, opts ...Opt) error
 
 	// Status returns the current state of write

vendor/github.com/containerd/containerd/content/local/store.go

@@ -524,12 +524,11 @@ func (s *store) writer(ctx context.Context, ref string, total int64, expected di
 		if err != nil {
 			return nil, err
 		}
-		defer fp.Close()
 
 		p := bufPool.Get().(*[]byte)
-		defer bufPool.Put(p)
-
 		offset, err = io.CopyBuffer(digester.Hash(), fp, *p)
+		bufPool.Put(p)
+		fp.Close()
 		if err != nil {
 			return nil, err
 		}

vendor/github.com/containerd/containerd/content/local/writer.go

@@ -26,6 +26,7 @@ import (
 
 	"github.com/containerd/containerd/content"
 	"github.com/containerd/containerd/errdefs"
+	"github.com/containerd/containerd/log"
 	"github.com/opencontainers/go-digest"
 	"github.com/pkg/errors"
 )
@@ -80,43 +81,36 @@ func (w *writer) Commit(ctx context.Context, size int64, expected digest.Digest,
 		}
 	}
 
-	if w.fp == nil {
+	// Ensure even on error the writer is fully closed
+	defer unlock(w.ref)
+	fp := w.fp
+	w.fp = nil
+
+	if fp == nil {
 		return errors.Wrap(errdefs.ErrFailedPrecondition, "cannot commit on closed writer")
 	}
 
-	if err := w.fp.Sync(); err != nil {
+	if err := fp.Sync(); err != nil {
+		fp.Close()
 		return errors.Wrap(err, "sync failed")
 	}
 
-	fi, err := w.fp.Stat()
+	fi, err := fp.Stat()
+	closeErr := fp.Close()
 	if err != nil {
 		return errors.Wrap(err, "stat on ingest file failed")
 	}
-
+	if closeErr != nil {
-	// change to readonly, more important for read, but provides _some_
+		return errors.Wrap(err, "failed to close ingest file")
-	// protection from this point on. We use the existing perms with a mask
-	// only allowing reads honoring the umask on creation.
-	//
-	// This removes write and exec, only allowing read per the creation umask.
-	//
-	// NOTE: Windows does not support this operation
-	if runtime.GOOS != "windows" {
-		if err := w.fp.Chmod((fi.Mode() & os.ModePerm) &^ 0333); err != nil {
-			return errors.Wrap(err, "failed to change ingest file permissions")
-		}
 	}
 
 	if size > 0 && size != fi.Size() {
-		return errors.Errorf("unexpected commit size %d, expected %d", fi.Size(), size)
+		return errors.Wrapf(errdefs.ErrFailedPrecondition, "unexpected commit size %d, expected %d", fi.Size(), size)
-	}
-
-	if err := w.fp.Close(); err != nil {
-		return errors.Wrap(err, "failed closing ingest")
 	}
 
 	dgst := w.digester.Digest()
 	if expected != "" && expected != dgst {
-		return errors.Errorf("unexpected commit digest %s, expected %s", dgst, expected)
+		return errors.Wrapf(errdefs.ErrFailedPrecondition, "unexpected commit digest %s, expected %s", dgst, expected)
 	}
 
 	var (
@@ -129,27 +123,48 @@ func (w *writer) Commit(ctx context.Context, size int64, expected digest.Digest,
 		return err
 	}
 
-	// clean up!!
-	defer os.RemoveAll(w.path)
-
 	if _, err := os.Stat(target); err == nil {
 		// collision with the target file!
+		if err := os.RemoveAll(w.path); err != nil {
+			log.G(ctx).WithField("ref", w.ref).WithField("path", w.path).Errorf("failed to remove ingest directory")
+		}
 		return errors.Wrapf(errdefs.ErrAlreadyExists, "content %v", dgst)
 	}
+
 	if err := os.Rename(ingest, target); err != nil {
 		return err
 	}
+
+	// Ingest has now been made available in the content store, attempt to complete
+	// setting metadata but errors should only be logged and not returned since
+	// the content store cannot be cleanly rolled back.
+
 	commitTime := time.Now()
 	if err := os.Chtimes(target, commitTime, commitTime); err != nil {
-		return err
+		log.G(ctx).WithField("digest", dgst).Errorf("failed to change file time to commit time")
 	}
 
-	w.fp = nil
+	// clean up!!
-	unlock(w.ref)
+	if err := os.RemoveAll(w.path); err != nil {
+		log.G(ctx).WithField("ref", w.ref).WithField("path", w.path).Errorf("failed to remove ingest directory")
+	}
 
 	if w.s.ls != nil && base.Labels != nil {
 		if err := w.s.ls.Set(dgst, base.Labels); err != nil {
-			return err
+			log.G(ctx).WithField("digest", dgst).Errorf("failed to set labels")
+		}
+	}
+
+	// change to readonly, more important for read, but provides _some_
+	// protection from this point on. We use the existing perms with a mask
+	// only allowing reads honoring the umask on creation.
+	//
+	// This removes write and exec, only allowing read per the creation umask.
+	//
+	// NOTE: Windows does not support this operation
+	if runtime.GOOS != "windows" {
+		if err := os.Chmod(target, (fi.Mode()&os.ModePerm)&^0333); err != nil {
+			log.G(ctx).WithField("ref", w.ref).Errorf("failed to make readonly")
 		}
 	}
 

vendor/github.com/containerd/containerd/contrib/seccomp/seccomp.go

@@ -37,10 +37,10 @@ func WithProfile(profile string) oci.SpecOpts {
 		s.Linux.Seccomp = &specs.LinuxSeccomp{}
 		f, err := ioutil.ReadFile(profile)
 		if err != nil {
-			return fmt.Errorf("Cannot load seccomp profile %q: %v", profile, err)
+			return fmt.Errorf("cannot load seccomp profile %q: %v", profile, err)
 		}
 		if err := json.Unmarshal(f, s.Linux.Seccomp); err != nil {
-			return fmt.Errorf("Decoding seccomp profile failed %q: %v", profile, err)
+			return fmt.Errorf("decoding seccomp profile failed %q: %v", profile, err)
 		}
 		return nil
 	}

vendor/github.com/containerd/containerd/diff/walking/differ.go

@@ -41,6 +41,7 @@ type walkingDiff struct {
 }
 
 var emptyDesc = ocispec.Descriptor{}
+var uncompressed = "containerd.io/uncompressed"
 
 // NewWalkingDiff is a generic implementation of diff.Comparer.  The diff is
 // calculated by mounting both the upper and lower mount sets and walking the
@@ -125,7 +126,7 @@ func (s *walkingDiff) Compare(ctx context.Context, lower, upper []mount.Mount, o
 				if config.Labels == nil {
 					config.Labels = map[string]string{}
 				}
-				config.Labels["containerd.io/uncompressed"] = dgstr.Digest().String()
+				config.Labels[uncompressed] = dgstr.Digest().String()
 			} else {
 				if err = archive.WriteDiff(ctx, cw, lowerRoot, upperRoot); err != nil {
 					return errors.Wrap(err, "failed to write diff")
@@ -149,6 +150,14 @@ func (s *walkingDiff) Compare(ctx context.Context, lower, upper []mount.Mount, o
 				return errors.Wrap(err, "failed to get info from content store")
 			}
 
+			// Set uncompressed label if digest already existed without label
+			if _, ok := info.Labels[uncompressed]; !ok {
+				info.Labels[uncompressed] = config.Labels[uncompressed]
+				if _, err := s.store.Update(ctx, info, "labels."+uncompressed); err != nil {
+					return errors.Wrap(err, "error setting uncompressed label")
+				}
+			}
+
 			ocidesc = ocispec.Descriptor{
 				MediaType: config.MediaType,
 				Size:      info.Size,

vendor/github.com/containerd/containerd/errdefs/grpc.go

@@ -95,7 +95,7 @@ func FromGRPC(err error) error {
 
 	msg := rebaseMessage(cls, err)
 	if msg != "" {
-		err = errors.Wrapf(cls, msg)
+		err = errors.Wrap(cls, msg)
 	} else {
 		err = errors.WithStack(cls)
 	}

vendor/github.com/containerd/containerd/events.go

@@ -110,6 +110,9 @@ func (e *eventRemote) Subscribe(ctx context.Context, filters ...string) (ch <-ch
 				Event:     ev.Event,
 			}:
 			case <-ctx.Done():
+				if cerr := ctx.Err(); cerr != context.Canceled {
+					errq <- cerr
+				}
 				return
 			}
 		}

vendor/github.com/containerd/containerd/events/exchange/exchange.go

@@ -138,10 +138,10 @@ func (e *Exchange) Subscribe(ctx context.Context, fs ...string) (ch <-chan *even
 	)
 
 	closeAll := func() {
-		defer close(errq)
+		channel.Close()
-		defer e.broadcaster.Remove(dst)
+		queue.Close()
-		defer queue.Close()
+		e.broadcaster.Remove(dst)
-		defer channel.Close()
+		close(errq)
 	}
 
 	ch = evch

vendor/github.com/containerd/containerd/filters/parser.go

@@ -71,7 +71,7 @@ func ParseAll(ss ...string) (Filter, error) {
 	for _, s := range ss {
 		f, err := Parse(s)
 		if err != nil {
-			return nil, errors.Wrapf(errdefs.ErrInvalidArgument, err.Error())
+			return nil, errors.Wrap(errdefs.ErrInvalidArgument, err.Error())
 		}
 
 		fs = append(fs, f)

vendor/github.com/containerd/containerd/image.go

@@ -170,26 +170,22 @@ func (i *image) Unpack(ctx context.Context, snapshotterName string) error {
 		chain = append(chain, layer.Diff.Digest)
 	}
 
-	if unpacked {
+	desc, err := i.i.Config(ctx, cs, i.platform)
-		desc, err := i.i.Config(ctx, cs, i.platform)
+	if err != nil {
-		if err != nil {
+		return err
-			return err
-		}
-
-		rootfs := identity.ChainID(chain).String()
-
-		cinfo := content.Info{
-			Digest: desc.Digest,
-			Labels: map[string]string{
-				fmt.Sprintf("containerd.io/gc.ref.snapshot.%s", snapshotterName): rootfs,
-			},
-		}
-		if _, err := cs.Update(ctx, cinfo, fmt.Sprintf("labels.containerd.io/gc.ref.snapshot.%s", snapshotterName)); err != nil {
-			return err
-		}
 	}
 
-	return nil
+	rootfs := identity.ChainID(chain).String()
+
+	cinfo := content.Info{
+		Digest: desc.Digest,
+		Labels: map[string]string{
+			fmt.Sprintf("containerd.io/gc.ref.snapshot.%s", snapshotterName): rootfs,
+		},
+	}
+
+	_, err = cs.Update(ctx, cinfo, fmt.Sprintf("labels.containerd.io/gc.ref.snapshot.%s", snapshotterName))
+	return err
 }
 
 func (i *image) getLayers(ctx context.Context, platform platforms.MatchComparer) ([]rootfs.Layer, error) {

vendor/github.com/containerd/containerd/images/archive/importer.go

@@ -36,7 +36,7 @@ import (
 	"github.com/pkg/errors"
 )
 
-// ImportIndex imports an index from a tar achive image bundle
+// ImportIndex imports an index from a tar archive image bundle
 // - implements Docker v1.1, v1.2 and OCI v1.
 // - prefers OCI v1 when provided
 // - creates OCI index for Docker formats
@@ -164,7 +164,7 @@ func ImportIndex(ctx context.Context, store content.Store, reader io.Reader) (oc
 		if len(platforms) > 0 {
 			// Only one platform can be resolved from non-index manifest,
 			// The platform can only come from the config included above,
-			// if the config has no platform it can be safely ommitted.
+			// if the config has no platform it can be safely omitted.
 			desc.Platform = &platforms[0]
 		}
 

vendor/github.com/containerd/containerd/images/mediatypes.go

@@ -29,11 +29,14 @@ const (
 	MediaTypeDockerSchema2Manifest         = "application/vnd.docker.distribution.manifest.v2+json"
 	MediaTypeDockerSchema2ManifestList     = "application/vnd.docker.distribution.manifest.list.v2+json"
 	// Checkpoint/Restore Media Types
-	MediaTypeContainerd1Checkpoint        = "application/vnd.containerd.container.criu.checkpoint.criu.tar"
+	MediaTypeContainerd1Checkpoint               = "application/vnd.containerd.container.criu.checkpoint.criu.tar"
-	MediaTypeContainerd1CheckpointPreDump = "application/vnd.containerd.container.criu.checkpoint.predump.tar"
+	MediaTypeContainerd1CheckpointPreDump        = "application/vnd.containerd.container.criu.checkpoint.predump.tar"
-	MediaTypeContainerd1Resource          = "application/vnd.containerd.container.resource.tar"
+	MediaTypeContainerd1Resource                 = "application/vnd.containerd.container.resource.tar"
-	MediaTypeContainerd1RW                = "application/vnd.containerd.container.rw.tar"
+	MediaTypeContainerd1RW                       = "application/vnd.containerd.container.rw.tar"
-	MediaTypeContainerd1CheckpointConfig  = "application/vnd.containerd.container.checkpoint.config.v1+proto"
+	MediaTypeContainerd1CheckpointConfig         = "application/vnd.containerd.container.checkpoint.config.v1+proto"
+	MediaTypeContainerd1CheckpointOptions        = "application/vnd.containerd.container.checkpoint.options.v1+proto"
+	MediaTypeContainerd1CheckpointRuntimeName    = "application/vnd.containerd.container.checkpoint.runtime.name"
+	MediaTypeContainerd1CheckpointRuntimeOptions = "application/vnd.containerd.container.checkpoint.runtime.options+proto"
 	// Legacy Docker schema1 manifest
 	MediaTypeDockerSchema1Manifest = "application/vnd.docker.distribution.manifest.v1+prettyjws"
 )

vendor/github.com/containerd/containerd/install.go

@@ -59,7 +59,6 @@ func (c *Client) Install(ctx context.Context, image Image, opts ...InstallOpts)
 		if err != nil {
 			return err
 		}
-		defer r.Close()
 		if _, err := archive.Apply(ctx, path, r, archive.WithFilter(func(hdr *tar.Header) (bool, error) {
 			d := filepath.Dir(hdr.Name)
 			result := d == "bin"
@@ -73,8 +72,10 @@ func (c *Client) Install(ctx context.Context, image Image, opts ...InstallOpts)
 			}
 			return result, nil
 		})); err != nil {
+			r.Close()
 			return err
 		}
+		r.Close()
 	}
 	return nil
 }

vendor/github.com/containerd/containerd/metadata/containers.go

@@ -72,7 +72,7 @@ func (s *containerStore) List(ctx context.Context, fs ...string) ([]containers.C
 
 	filter, err := filters.ParseAll(fs...)
 	if err != nil {
-		return nil, errors.Wrapf(errdefs.ErrInvalidArgument, err.Error())
+		return nil, errors.Wrap(errdefs.ErrInvalidArgument, err.Error())
 	}
 
 	bkt := getContainersBucket(s.tx, namespace)

vendor/github.com/containerd/containerd/metadata/content.go

@@ -556,12 +556,6 @@ func (nw *namespacedWriter) Commit(ctx context.Context, size int64, expected dig
 	var innerErr error
 
 	if err := update(ctx, nw.db, func(tx *bolt.Tx) error {
-		bkt := getIngestsBucket(tx, nw.namespace)
-		if bkt != nil {
-			if err := bkt.DeleteBucket([]byte(nw.ref)); err != nil && err != bolt.ErrBucketNotFound {
-				return err
-			}
-		}
 		dgst, err := nw.commit(ctx, tx, size, expected, opts...)
 		if err != nil {
 			if !errdefs.IsAlreadyExists(err) {
@@ -569,6 +563,12 @@ func (nw *namespacedWriter) Commit(ctx context.Context, size int64, expected dig
 			}
 			innerErr = err
 		}
+		bkt := getIngestsBucket(tx, nw.namespace)
+		if bkt != nil {
+			if err := bkt.DeleteBucket([]byte(nw.ref)); err != nil && err != bolt.ErrBucketNotFound {
+				return err
+			}
+		}
 		if err := removeIngestLease(ctx, tx, nw.ref); err != nil {
 			return err
 		}
@@ -584,30 +584,38 @@ func (nw *namespacedWriter) commit(ctx context.Context, tx *bolt.Tx, size int64,
 	var base content.Info
 	for _, opt := range opts {
 		if err := opt(&base); err != nil {
+			if nw.w != nil {
+				nw.w.Close()
+			}
 			return "", err
 		}
 	}
 	if err := validateInfo(&base); err != nil {
+		if nw.w != nil {
+			nw.w.Close()
+		}
 		return "", err
 	}
 
 	var actual digest.Digest
 	if nw.w == nil {
 		if size != 0 && size != nw.desc.Size {
-			return "", errors.Errorf("%q failed size validation: %v != %v", nw.ref, nw.desc.Size, size)
+			return "", errors.Wrapf(errdefs.ErrFailedPrecondition, "%q failed size validation: %v != %v", nw.ref, nw.desc.Size, size)
 		}
 		if expected != "" && expected != nw.desc.Digest {
-			return "", errors.Errorf("%q unexpected digest", nw.ref)
+			return "", errors.Wrapf(errdefs.ErrFailedPrecondition, "%q unexpected digest", nw.ref)
 		}
 		size = nw.desc.Size
 		actual = nw.desc.Digest
 	} else {
 		status, err := nw.w.Status()
 		if err != nil {
+			nw.w.Close()
 			return "", err
 		}
 		if size != 0 && size != status.Offset {
-			return "", errors.Errorf("%q failed size validation: %v != %v", nw.ref, status.Offset, size)
+			nw.w.Close()
+			return "", errors.Wrapf(errdefs.ErrFailedPrecondition, "%q failed size validation: %v != %v", nw.ref, status.Offset, size)
 		}
 		size = status.Offset
 		actual = nw.w.Digest()

vendor/github.com/containerd/containerd/metadata/images.go

@@ -84,7 +84,7 @@ func (s *imageStore) List(ctx context.Context, fs ...string) ([]images.Image, er
 
 	filter, err := filters.ParseAll(fs...)
 	if err != nil {
-		return nil, errors.Wrapf(errdefs.ErrInvalidArgument, err.Error())
+		return nil, errors.Wrap(errdefs.ErrInvalidArgument, err.Error())
 	}
 
 	var m []images.Image

vendor/github.com/containerd/containerd/metadata/leases.go

@@ -122,7 +122,7 @@ func (lm *LeaseManager) List(ctx context.Context, fs ...string) ([]leases.Lease,
 
 	filter, err := filters.ParseAll(fs...)
 	if err != nil {
-		return nil, errors.Wrapf(errdefs.ErrInvalidArgument, err.Error())
+		return nil, errors.Wrap(errdefs.ErrInvalidArgument, err.Error())
 	}
 
 	var ll []leases.Lease

vendor/github.com/containerd/containerd/mount/mount_unix.go

@@ -1,4 +1,4 @@
-// +build darwin freebsd
+// +build darwin freebsd openbsd
 
 /*
    Copyright The containerd Authors.

vendor/github.com/containerd/containerd/mount/mountinfo_bsd.go

@@ -1,3 +1,5 @@
+// +build freebsd openbsd
+
 /*
    Copyright The containerd Authors.
 

vendor/github.com/containerd/containerd/mount/mountinfo_linux.go

@@ -68,7 +68,7 @@ func parseInfoFile(r io.Reader) ([]Info, error) {
 		numFields := len(fields)
 		if numFields < 10 {
 			// should be at least 10 fields
-			return nil, fmt.Errorf("Parsing '%s' failed: not enough fields (%d)", text, numFields)
+			return nil, fmt.Errorf("parsing '%s' failed: not enough fields (%d)", text, numFields)
 		}
 		p := Info{}
 		// ignore any numbers parsing errors, as there should not be any
@@ -76,7 +76,7 @@ func parseInfoFile(r io.Reader) ([]Info, error) {
 		p.Parent, _ = strconv.Atoi(fields[1])
 		mm := strings.Split(fields[2], ":")
 		if len(mm) != 2 {
-			return nil, fmt.Errorf("Parsing '%s' failed: unexpected minor:major pair %s", text, mm)
+			return nil, fmt.Errorf("parsing '%s' failed: unexpected minor:major pair %s", text, mm)
 		}
 		p.Major, _ = strconv.Atoi(mm[0])
 		p.Minor, _ = strconv.Atoi(mm[1])
@@ -101,11 +101,11 @@ func parseInfoFile(r io.Reader) ([]Info, error) {
 			}
 		}
 		if i == numFields {
-			return nil, fmt.Errorf("Parsing '%s' failed: missing separator ('-')", text)
+			return nil, fmt.Errorf("parsing '%s' failed: missing separator ('-')", text)
 		}
 		// There should be 3 fields after the separator...
 		if i+4 > numFields {
-			return nil, fmt.Errorf("Parsing '%s' failed: not enough fields after a separator", text)
+			return nil, fmt.Errorf("parsing '%s' failed: not enough fields after a separator", text)
 		}
 		// ... but in Linux <= 3.9 mounting a cifs with spaces in a share name
 		// (like "//serv/My Documents") _may_ end up having a space in the last field

vendor/github.com/containerd/containerd/mount/mountinfo_unsupported.go

@@ -1,4 +1,4 @@
-// +build !linux,!freebsd,!solaris freebsd,!cgo solaris,!cgo
+// +build !linux,!freebsd,!solaris,!openbsd freebsd,!cgo solaris,!cgo openbsd,!cgo
 
 /*
    Copyright The containerd Authors.

vendor/github.com/containerd/containerd/oci/spec.go

@@ -209,6 +209,7 @@ func populateDefaultUnixSpec(ctx context.Context, s *Spec, id string) error {
 		Linux: &specs.Linux{
 			MaskedPaths: []string{
 				"/proc/acpi",
+				"/proc/asound",
 				"/proc/kcore",
 				"/proc/keys",
 				"/proc/latency_stats",
@@ -219,7 +220,6 @@ func populateDefaultUnixSpec(ctx context.Context, s *Spec, id string) error {
 				"/proc/scsi",
 			},
 			ReadonlyPaths: []string{
-				"/proc/asound",
 				"/proc/bus",
 				"/proc/fs",
 				"/proc/irq",

vendor/github.com/containerd/containerd/oci/spec_opts.go

@@ -1026,3 +1026,32 @@ func WithWindowsHyperV(_ context.Context, _ Client, _ *containers.Container, s *
 	}
 	return nil
 }
+
+// WithMemoryLimit sets the `Linux.LinuxResources.Memory.Limit` section to the
+// `limit` specified if the `Linux` section is not `nil`. Additionally sets the
+// `Windows.WindowsResources.Memory.Limit` section if the `Windows` section is
+// not `nil`.
+func WithMemoryLimit(limit uint64) SpecOpts {
+	return func(_ context.Context, _ Client, _ *containers.Container, s *Spec) error {
+		if s.Linux != nil {
+			if s.Linux.Resources == nil {
+				s.Linux.Resources = &specs.LinuxResources{}
+			}
+			if s.Linux.Resources.Memory == nil {
+				s.Linux.Resources.Memory = &specs.LinuxMemory{}
+			}
+			l := int64(limit)
+			s.Linux.Resources.Memory.Limit = &l
+		}
+		if s.Windows != nil {
+			if s.Windows.Resources == nil {
+				s.Windows.Resources = &specs.WindowsResources{}
+			}
+			if s.Windows.Resources.Memory == nil {
+				s.Windows.Resources.Memory = &specs.WindowsMemoryResources{}
+			}
+			s.Windows.Resources.Memory.Limit = &limit
+		}
+		return nil
+	}
+}

vendor/github.com/containerd/containerd/oci/spec_opts_windows.go

@@ -0,0 +1,41 @@
+// +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 oci
+
+import (
+	"context"
+
+	"github.com/containerd/containerd/containers"
+	specs "github.com/opencontainers/runtime-spec/specs-go"
+)
+
+// WithWindowsCPUCount sets the `Windows.Resources.CPU.Count` section to the
+// `count` specified.
+func WithWindowsCPUCount(count uint64) SpecOpts {
+	return func(_ context.Context, _ Client, _ *containers.Container, s *Spec) error {
+		if s.Windows.Resources == nil {
+			s.Windows.Resources = &specs.WindowsResources{}
+		}
+		if s.Windows.Resources.CPU == nil {
+			s.Windows.Resources.CPU = &specs.WindowsCPUResources{}
+		}
+		s.Windows.Resources.CPU.Count = &count
+		return nil
+	}
+}

vendor/github.com/containerd/containerd/remotes/docker/authorizer.go

@@ -80,12 +80,8 @@ func (a *dockerAuthorizer) AddResponses(ctx context.Context, responses []*http.R
 
 			// TODO(dmcg): Store challenge, not token
 			// Move token fetching to authorize
-			if err := a.setTokenAuth(ctx, host, c.parameters); err != nil {
+			return a.setTokenAuth(ctx, host, c.parameters)
-				return err
+		} else if c.scheme == basicAuth && a.credentials != nil {
-			}
-
-			return nil
-		} else if c.scheme == basicAuth {
 			// TODO: Resolve credentials on authorize
 			username, secret, err := a.credentials(host)
 			if err != nil {
@@ -198,7 +194,11 @@ func (a *dockerAuthorizer) fetchTokenWithOAuth(ctx context.Context, to tokenOpti
 		form.Set("password", to.secret)
 	}
 
-	resp, err := ctxhttp.PostForm(ctx, a.client, to.realm, form)
+	resp, err := ctxhttp.Post(
+		ctx, a.client, to.realm,
+		"application/x-www-form-urlencoded; charset=utf-8",
+		strings.NewReader(form.Encode()),
+	)
 	if err != nil {
 		return "", err
 	}

vendor/github.com/containerd/containerd/remotes/docker/resolver.go

@@ -29,6 +29,7 @@ import (
 	"github.com/containerd/containerd/log"
 	"github.com/containerd/containerd/reference"
 	"github.com/containerd/containerd/remotes"
+	"github.com/containerd/containerd/version"
 	digest "github.com/opencontainers/go-digest"
 	ocispec "github.com/opencontainers/image-spec/specs-go/v1"
 	"github.com/pkg/errors"
@@ -75,13 +76,16 @@ type ResolverOptions struct {
 
 	// Credentials provides username and secret given a host.
 	// If username is empty but a secret is given, that secret
-	// is interpretted as a long lived token.
+	// is interpreted as a long lived token.
 	// Deprecated: use Authorizer
 	Credentials func(string) (string, string, error)
 
 	// Host provides the hostname given a namespace.
 	Host func(string) (string, error)
 
+	// Headers are the HTTP request header fields sent by the resolver
+	Headers http.Header
+
 	// PlainHTTP specifies to use plain http and not https
 	PlainHTTP bool
 
@@ -105,6 +109,7 @@ func DefaultHost(ns string) (string, error) {
 type dockerResolver struct {
 	auth      Authorizer
 	host      func(string) (string, error)
+	headers   http.Header
 	plainHTTP bool
 	client    *http.Client
 	tracker   StatusTracker
@@ -118,12 +123,27 @@ func NewResolver(options ResolverOptions) remotes.Resolver {
 	if options.Host == nil {
 		options.Host = DefaultHost
 	}
+	if options.Headers == nil {
+		options.Headers = make(http.Header)
+	}
+	if _, ok := options.Headers["Accept"]; !ok {
+		// set headers for all the types we support for resolution.
+		options.Headers.Set("Accept", strings.Join([]string{
+			images.MediaTypeDockerSchema2Manifest,
+			images.MediaTypeDockerSchema2ManifestList,
+			ocispec.MediaTypeImageManifest,
+			ocispec.MediaTypeImageIndex, "*"}, ", "))
+	}
+	if _, ok := options.Headers["User-Agent"]; !ok {
+		options.Headers.Set("User-Agent", "containerd/"+version.Version)
+	}
 	if options.Authorizer == nil {
 		options.Authorizer = NewAuthorizer(options.Client, options.Credentials)
 	}
 	return &dockerResolver{
 		auth:      options.Authorizer,
 		host:      options.Host,
+		headers:   options.Headers,
 		plainHTTP: options.PlainHTTP,
 		client:    options.Client,
 		tracker:   options.Tracker,
@@ -182,12 +202,7 @@ func (r *dockerResolver) Resolve(ctx context.Context, ref string) (string, ocisp
 			return "", ocispec.Descriptor{}, err
 		}
 
-		// set headers for all the types we support for resolution.
+		req.Header = r.headers
-		req.Header.Set("Accept", strings.Join([]string{
-			images.MediaTypeDockerSchema2Manifest,
-			images.MediaTypeDockerSchema2ManifestList,
-			ocispec.MediaTypeImageManifest,
-			ocispec.MediaTypeImageIndex, "*"}, ", "))
 
 		log.G(ctx).Debug("resolving")
 		resp, err := fetcher.doRequestWithRetries(ctx, req, nil)

vendor/github.com/containerd/containerd/remotes/docker/schema1/converter.go

@@ -24,6 +24,7 @@ import (
 	"fmt"
 	"io"
 	"io/ioutil"
+	"strconv"
 	"strings"
 	"sync"
 	"time"
@@ -42,7 +43,10 @@ import (
 	"github.com/pkg/errors"
 )
 
-const manifestSizeLimit = 8e6 // 8MB
+const (
+	manifestSizeLimit            = 8e6 // 8MB
+	labelDockerSchema1EmptyLayer = "containerd.io/docker.schema1.empty-layer"
+)
 
 type blobState struct {
 	diffID digest.Digest
@@ -353,10 +357,11 @@ func (c *Converter) fetchBlob(ctx context.Context, desc ocispec.Descriptor) erro
 		Digest: desc.Digest,
 		Labels: map[string]string{
 			"containerd.io/uncompressed": state.diffID.String(),
+			labelDockerSchema1EmptyLayer: strconv.FormatBool(state.empty),
 		},
 	}
 
-	if _, err := c.contentStore.Update(ctx, cinfo, "labels.containerd.io/uncompressed"); err != nil {
+	if _, err := c.contentStore.Update(ctx, cinfo, "labels.containerd.io/uncompressed", fmt.Sprintf("labels.%s", labelDockerSchema1EmptyLayer)); err != nil {
 		return errors.Wrap(err, "failed to update uncompressed label")
 	}
 
@@ -380,7 +385,18 @@ func (c *Converter) reuseLabelBlobState(ctx context.Context, desc ocispec.Descri
 		return false, nil
 	}
 
-	bState := blobState{empty: false}
+	emptyVal, ok := cinfo.Labels[labelDockerSchema1EmptyLayer]
+	if !ok {
+		return false, nil
+	}
+
+	isEmpty, err := strconv.ParseBool(emptyVal)
+	if err != nil {
+		log.G(ctx).WithField("id", desc.Digest).Warnf("failed to parse bool from label %s: %v", labelDockerSchema1EmptyLayer, isEmpty)
+		return false, nil
+	}
+
+	bState := blobState{empty: isEmpty}
 
 	if bState.diffID, err = digest.Parse(diffID); err != nil {
 		log.G(ctx).WithField("id", desc.Digest).Warnf("failed to parse digest from label containerd.io/uncompressed: %v", diffID)

vendor/github.com/containerd/containerd/runtime/linux/runctypes/runc.pb.go

@@ -60,6 +60,8 @@ type CreateOptions struct {
 	ShimCgroup          string   `protobuf:"bytes,9,opt,name=shim_cgroup,json=shimCgroup,proto3" json:"shim_cgroup,omitempty"`
 	IoUid               uint32   `protobuf:"varint,10,opt,name=io_uid,json=ioUid,proto3" json:"io_uid,omitempty"`
 	IoGid               uint32   `protobuf:"varint,11,opt,name=io_gid,json=ioGid,proto3" json:"io_gid,omitempty"`
+	CriuWorkPath        string   `protobuf:"bytes,12,opt,name=criu_work_path,json=criuWorkPath,proto3" json:"criu_work_path,omitempty"`
+	CriuImagePath       string   `protobuf:"bytes,13,opt,name=criu_image_path,json=criuImagePath,proto3" json:"criu_image_path,omitempty"`
 }
 
 func (m *CreateOptions) Reset()                    { *m = CreateOptions{} }
@@ -74,6 +76,8 @@ type CheckpointOptions struct {
 	FileLocks           bool     `protobuf:"varint,5,opt,name=file_locks,json=fileLocks,proto3" json:"file_locks,omitempty"`
 	EmptyNamespaces     []string `protobuf:"bytes,6,rep,name=empty_namespaces,json=emptyNamespaces" json:"empty_namespaces,omitempty"`
 	CgroupsMode         string   `protobuf:"bytes,7,opt,name=cgroups_mode,json=cgroupsMode,proto3" json:"cgroups_mode,omitempty"`
+	WorkPath            string   `protobuf:"bytes,8,opt,name=work_path,json=workPath,proto3" json:"work_path,omitempty"`
+	ImagePath           string   `protobuf:"bytes,9,opt,name=image_path,json=imagePath,proto3" json:"image_path,omitempty"`
 }
 
 func (m *CheckpointOptions) Reset()                    { *m = CheckpointOptions{} }
@@ -252,6 +256,18 @@ func (m *CreateOptions) MarshalTo(dAtA []byte) (int, error) {
 		i++
 		i = encodeVarintRunc(dAtA, i, uint64(m.IoGid))
 	}
+	if len(m.CriuWorkPath) > 0 {
+		dAtA[i] = 0x62
+		i++
+		i = encodeVarintRunc(dAtA, i, uint64(len(m.CriuWorkPath)))
+		i += copy(dAtA[i:], m.CriuWorkPath)
+	}
+	if len(m.CriuImagePath) > 0 {
+		dAtA[i] = 0x6a
+		i++
+		i = encodeVarintRunc(dAtA, i, uint64(len(m.CriuImagePath)))
+		i += copy(dAtA[i:], m.CriuImagePath)
+	}
 	return i, nil
 }
 
@@ -341,6 +357,18 @@ func (m *CheckpointOptions) MarshalTo(dAtA []byte) (int, error) {
 		i = encodeVarintRunc(dAtA, i, uint64(len(m.CgroupsMode)))
 		i += copy(dAtA[i:], m.CgroupsMode)
 	}
+	if len(m.WorkPath) > 0 {
+		dAtA[i] = 0x42
+		i++
+		i = encodeVarintRunc(dAtA, i, uint64(len(m.WorkPath)))
+		i += copy(dAtA[i:], m.WorkPath)
+	}
+	if len(m.ImagePath) > 0 {
+		dAtA[i] = 0x4a
+		i++
+		i = encodeVarintRunc(dAtA, i, uint64(len(m.ImagePath)))
+		i += copy(dAtA[i:], m.ImagePath)
+	}
 	return i, nil
 }
 
@@ -439,6 +467,14 @@ func (m *CreateOptions) Size() (n int) {
 	if m.IoGid != 0 {
 		n += 1 + sovRunc(uint64(m.IoGid))
 	}
+	l = len(m.CriuWorkPath)
+	if l > 0 {
+		n += 1 + l + sovRunc(uint64(l))
+	}
+	l = len(m.CriuImagePath)
+	if l > 0 {
+		n += 1 + l + sovRunc(uint64(l))
+	}
 	return n
 }
 
@@ -470,6 +506,14 @@ func (m *CheckpointOptions) Size() (n int) {
 	if l > 0 {
 		n += 1 + l + sovRunc(uint64(l))
 	}
+	l = len(m.WorkPath)
+	if l > 0 {
+		n += 1 + l + sovRunc(uint64(l))
+	}
+	l = len(m.ImagePath)
+	if l > 0 {
+		n += 1 + l + sovRunc(uint64(l))
+	}
 	return n
 }
 
@@ -525,6 +569,8 @@ func (this *CreateOptions) String() string {
 		`ShimCgroup:` + fmt.Sprintf("%v", this.ShimCgroup) + `,`,
 		`IoUid:` + fmt.Sprintf("%v", this.IoUid) + `,`,
 		`IoGid:` + fmt.Sprintf("%v", this.IoGid) + `,`,
+		`CriuWorkPath:` + fmt.Sprintf("%v", this.CriuWorkPath) + `,`,
+		`CriuImagePath:` + fmt.Sprintf("%v", this.CriuImagePath) + `,`,
 		`}`,
 	}, "")
 	return s
@@ -541,6 +587,8 @@ func (this *CheckpointOptions) String() string {
 		`FileLocks:` + fmt.Sprintf("%v", this.FileLocks) + `,`,
 		`EmptyNamespaces:` + fmt.Sprintf("%v", this.EmptyNamespaces) + `,`,
 		`CgroupsMode:` + fmt.Sprintf("%v", this.CgroupsMode) + `,`,
+		`WorkPath:` + fmt.Sprintf("%v", this.WorkPath) + `,`,
+		`ImagePath:` + fmt.Sprintf("%v", this.ImagePath) + `,`,
 		`}`,
 	}, "")
 	return s
@@ -994,6 +1042,64 @@ func (m *CreateOptions) Unmarshal(dAtA []byte) error {
 					break
 				}
 			}
+		case 12:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field CriuWorkPath", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowRunc
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= (uint64(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthRunc
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.CriuWorkPath = string(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
+		case 13:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field CriuImagePath", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowRunc
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= (uint64(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthRunc
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.CriuImagePath = string(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
 		default:
 			iNdEx = preIndex
 			skippy, err := skipRunc(dAtA[iNdEx:])
@@ -1202,6 +1308,64 @@ func (m *CheckpointOptions) Unmarshal(dAtA []byte) error {
 			}
 			m.CgroupsMode = string(dAtA[iNdEx:postIndex])
 			iNdEx = postIndex
+		case 8:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field WorkPath", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowRunc
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= (uint64(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthRunc
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.WorkPath = string(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
+		case 9:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field ImagePath", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowRunc
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= (uint64(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthRunc
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.ImagePath = string(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
 		default:
 			iNdEx = preIndex
 			skippy, err := skipRunc(dAtA[iNdEx:])
@@ -1412,39 +1576,43 @@ func init() {
 }
 
 var fileDescriptorRunc = []byte{
-	// 541 bytes of a gzipped FileDescriptorProto
+	// 604 bytes of a gzipped FileDescriptorProto
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+	0x9e, 0xc2, 0xe6, 0x69, 0x46, 0x02, 0xb5, 0x3e, 0x42, 0x13, 0xc9, 0xb1, 0x66, 0xf7, 0xa0, 0x8a,
-	0x03, 0x00, 0x00, 0xff, 0xff, 0x18, 0xa1, 0x4b, 0x5b, 0x27, 0x04, 0x00, 0x00,
+	0x53, 0x14, 0x5c, 0xc6, 0xc5, 0x17, 0x7a, 0x08, 0xf3, 0xdf, 0xfb, 0x95, 0xe7, 0x53, 0x14, 0xc7,
+	0x47, 0x61, 0xc5, 0x8e, 0x8e, 0xe3, 0xc3, 0x4f, 0x17, 0x97, 0xad, 0x95, 0x5f, 0x97, 0xad, 0x95,
+	0xaf, 0xf3, 0x96, 0x77, 0x31, 0x6f, 0x79, 0x3f, 0xe7, 0x2d, 0xef, 0xcf, 0xbc, 0xe5, 0x7d, 0x3c,
+	0xfc, 0xd7, 0x5f, 0xcc, 0xb3, 0x65, 0xf5, 0x61, 0xe5, 0xbc, 0xe2, 0xfe, 0x1e, 0x4f, 0xfe, 0x06,
+	0x00, 0x00, 0xff, 0xff, 0x7f, 0x24, 0x6f, 0x2e, 0xb1, 0x04, 0x00, 0x00,
 }

vendor/github.com/containerd/containerd/runtime/linux/runctypes/runc.proto

@@ -25,6 +25,8 @@ message CreateOptions {
 	string shim_cgroup = 9;
 	uint32 io_uid = 10;
 	uint32 io_gid = 11;
+	string criu_work_path = 12;
+	string criu_image_path = 13;
 }
 
 message CheckpointOptions {
@@ -35,6 +37,8 @@ message CheckpointOptions {
 	bool file_locks = 5;
 	repeated string empty_namespaces = 6;
 	string cgroups_mode = 7;
+	string work_path = 8;
+	string image_path = 9;
 }
 
 message ProcessDetails {

vendor/github.com/containerd/containerd/runtime/v2/README.md

@@ -0,0 +1,174 @@
+# Runtime v2
+
+Runtime v2 introduces a first class shim API for runtime authors to integrate with containerd.
+The shim API is minimal and scoped to the execution lifecycle of a container.
+
+## Binary Naming
+
+Users specify the runtime they wish to use when creating a container.
+The runtime can also be changed via a container update.
+
+```bash
+> ctr run --runtime io.containerd.runc.v1
+```
+
+When a user specifies a runtime name, `io.containerd.runc.v1`, they will specify the name and version of the runtime.
+This will be translated by containerd into a binary name for the shim.
+
+`io.containerd.runc.v1` -> `containerd-shim-runc-v1`
+
+containerd keeps the `containerd-shim-*` prefix so that users can `ps aux | grep containerd-shim` to see running shims on their system.
+
+## Shim Authoring
+
+This section is dedicated to runtime authors wishing to build a shim.
+It will detail how the API works and different considerations when building shim.
+
+### Commands
+
+Container information is provided to a shim in two ways.
+The OCI Runtime Bundle and on the `Create` rpc request.
+
+#### `start`
+
+Each shim MUST implement a `start` subcommand.
+This command will launch new shims.
+The start command MUST accept the following flags:
+
+* `-namespace` the namespace for the container
+* `-address` the address of the containerd's main socket
+* `-publish-binary` the binary path to publish events back to containerd
+* `-id` the id of the container
+
+The start command, as well as all binary calls to the shim, has the bundle for the container set as the `cwd`.
+
+The start command MUST return an address to a shim for containerd to issue API requests for container operations.
+
+The start command can either start a new shim or return an address to an existing shim based on the shim's logic.
+
+#### `delete`
+
+Each shim MUST implement a `delete` subcommand.
+This command allows containerd to delete any container resources created, mounted, and/or run by a shim when containerd can no longer communicate over rpc.
+This happens if a shim is SIGKILL'd with a running container.
+These resources will need to be cleaned up when containerd looses the connection to a shim.
+This is also used when containerd boots and reconnects to shims.
+If a bundle is still on disk but containerd cannot connect to a shim, the delete command is invoked.
+
+The delete command MUST accept the following flags:
+
+* `-namespace` the namespace for the container
+* `-address` the address of the containerd's main socket
+* `-publish-binary` the binary path to publish events back to containerd
+* `-id` the id of the container
+* `-bundle` the path to the bundle to delete. On non-Windows platforms this will match `cwd`
+
+The delete command will be executed in the container's bundle as its `cwd` except for on the Windows platform.
+
+### Host Level Shim Configuration
+
+containerd does not provide any host level configuration for shims via the API.
+If a shim needs configuration from the user with host level information across all instances, a shim specific configuration file can be setup.
+
+### Container Level Shim Configuration
+
+On the create request, there is a generic `*protobuf.Any` that allows a user to specify container level configuration for the shim.
+
+```proto
+message CreateTaskRequest {
+	string id = 1;
+	...
+	google.protobuf.Any options = 10;
+}
+```
+
+A shim author can create their own protobuf message for configuration and clients can import and provide this information is needed.
+
+### I/O
+
+I/O for a container is provided by the client to the shim via fifo on Linux, named pipes on Windows, or log files on disk.
+The paths to these files are provided on the `Create` rpc for the initial creation and on the `Exec` rpc for additional processes.
+
+```proto
+message CreateTaskRequest {
+	string id = 1;
+	bool terminal = 4;
+	string stdin = 5;
+	string stdout = 6;
+	string stderr = 7;
+}
+```
+
+```proto
+message ExecProcessRequest {
+	string id = 1;
+	string exec_id = 2;
+	bool terminal = 3;
+	string stdin = 4;
+	string stdout = 5;
+	string stderr = 6;
+}
+```
+
+Containers that are to be launched with an interactive terminal will have the `terminal` field set to `true`, data is still copied over the files(fifos,pipes) in the same way as non interactive containers.
+
+### Root Filesystems
+
+The root filesystem for the containers is provided by on the `Create` rpc.
+Shims are responsible for managing the lifecycle of the filesystem mount during the lifecycle of a container.
+
+```proto
+message CreateTaskRequest {
+	string id = 1;
+	string bundle = 2;
+	repeated containerd.types.Mount rootfs = 3;
+	...
+}
+```
+
+The mount protobuf message is:
+
+```proto
+message Mount {
+	// Type defines the nature of the mount.
+	string type = 1;
+	// Source specifies the name of the mount. Depending on mount type, this
+	// may be a volume name or a host path, or even ignored.
+	string source = 2;
+	// Target path in container
+	string target = 3;
+	// Options specifies zero or more fstab style mount options.
+	repeated string options = 4;
+}
+```
+
+Shims are responsible for mounting the filesystem into the `rootfs/` directory of the bundle.
+Shims are also responsible for unmounting of the filesystem.
+During a `delete` binary call, the shim MUST ensure that filesystem is also unmounted.
+Filesystems are provided by the containerd snapshotters.
+
+### Events
+
+The shim MUST publish a `runtime.TaskExitEventTopic` when the container exits.
+If the shim collects Out of Memory events, it SHOULD also publish a `runtime.TaskOOMEventTopic`.
+
+### Other
+
+#### Unsupported rpcs
+
+If a shim does not or cannot implement an rpc call, it MUST return a `github.com/containerd/containerd/errdefs.ErrNotImplemented` error.
+
+#### Debugging and Shim Logs
+
+A fifo on unix or named pipe on Windows will be provided to the shim.
+It can be located inside the `cwd` of the shim named "log".
+The shims can use the existing `github.com/containerd/containerd/log` package to log debug messages.
+Messages will automatically be output in the containerd's daemon logs with the correct fields and runtime set.
+
+#### ttrpc
+
+[ttrpc](https://github.com/containerd/ttrpc) is the only currently supported protocol for shims.
+It works with standard protobufs and GRPC services as well as generating clients.
+The only difference between grpc and ttrpc is the wire protocol.
+ttrpc removes the http stack in order to save memory and binary size to keep shims small.
+It is recommended to use ttrpc in your shim but grpc support is also in development.

vendor/github.com/containerd/containerd/runtime/v2/runc/options/doc.go

@@ -0,0 +1,17 @@
+/*
+   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 options

vendor/github.com/containerd/containerd/runtime/v2/runc/options/oci.proto

@@ -0,0 +1,58 @@
+syntax = "proto3";
+
+package containerd.runc.v1;
+
+import weak "gogoproto/gogo.proto";
+
+option go_package = "github.com/containerd/containerd/runtime/v2/runc/options;options";
+
+message Options {
+	// disable pivot root when creating a container
+	bool no_pivot_root = 1;
+	// create a new keyring for the container
+	bool no_new_keyring = 2;
+	// place the shim in a cgroup
+	string shim_cgroup = 3;
+	// set the I/O's pipes uid
+	uint32 io_uid = 4;
+	// set the I/O's pipes gid
+	uint32 io_gid = 5;
+	// binary name of the runc binary
+	string binary_name = 6;
+	// runc root directory
+	string root = 7;
+	// criu binary path
+	string criu_path = 8;
+	// enable systemd cgroups
+	bool systemd_cgroup = 9;
+	// criu image path
+	string criu_image_path = 10;
+	// criu work path
+	string criu_work_path = 11;
+}
+
+message CheckpointOptions {
+	// exit the container after a checkpoint
+	bool exit = 1;
+	// checkpoint open tcp connections
+	bool open_tcp = 2;
+	// checkpoint external unix sockets
+	bool external_unix_sockets = 3;
+	// checkpoint terminals (ptys)
+	bool terminal = 4;
+	// allow checkpointing of file locks
+	bool file_locks = 5;
+	// restore provided namespaces as empty namespaces
+	repeated string empty_namespaces = 6;
+	// set the cgroups mode, soft, full, strict
+	string cgroups_mode = 7;
+	// checkpoint image path
+	string image_path = 8;
+	// checkpoint work path
+	string work_path = 9;
+}
+
+message ProcessDetails {
+	// exec process id if the process is managed by a shim
+	string exec_id = 1;
+}

vendor/github.com/containerd/containerd/snapshots/overlay/overlay.go

@@ -426,7 +426,7 @@ func (o *snapshotter) createSnapshot(ctx context.Context, kind snapshots.Kind, k
 }
 
 func (o *snapshotter) prepareDirectory(ctx context.Context, snapshotDir string, kind snapshots.Kind) (string, error) {
-	td, err := ioutil.TempDir(filepath.Join(o.root, "snapshots"), "new-")
+	td, err := ioutil.TempDir(snapshotDir, "new-")
 	if err != nil {
 		return "", errors.Wrap(err, "failed to create temp dir")
 	}

vendor/github.com/containerd/containerd/task.go

@@ -37,6 +37,8 @@ import (
 	"github.com/containerd/containerd/mount"
 	"github.com/containerd/containerd/plugin"
 	"github.com/containerd/containerd/rootfs"
+	"github.com/containerd/containerd/runtime/linux/runctypes"
+	"github.com/containerd/containerd/runtime/v2/runc/options"
 	"github.com/containerd/typeurl"
 	google_protobuf "github.com/gogo/protobuf/types"
 	digest "github.com/opencontainers/go-digest"
@@ -147,6 +149,8 @@ type Task interface {
 	// OCI Index that can be push and pulled from a remote resource.
 	//
 	// Additional software like CRIU maybe required to checkpoint and restore tasks
+	// NOTE: Checkpoint supports to dump task information to a directory, in this way,
+	// an empty OCI Index will be returned.
 	Checkpoint(context.Context, ...CheckpointTaskOpts) (Image, error)
 	// Update modifies executing tasks with updated settings
 	Update(context.Context, ...UpdateTaskOpts) error
@@ -387,6 +391,8 @@ func (t *task) Resize(ctx context.Context, w, h uint32) error {
 	return errdefs.FromGRPC(err)
 }
 
+// NOTE: Checkpoint supports to dump task information to a directory, in this way, an empty
+// OCI Index will be returned.
 func (t *task) Checkpoint(ctx context.Context, opts ...CheckpointTaskOpts) (Image, error) {
 	ctx, done, err := t.client.WithLease(ctx)
 	if err != nil {
@@ -433,6 +439,12 @@ func (t *task) Checkpoint(ctx context.Context, opts ...CheckpointTaskOpts) (Imag
 	if err := t.checkpointTask(ctx, &index, request); err != nil {
 		return nil, err
 	}
+	// if checkpoint image path passed, jump checkpoint image,
+	// return an empty image
+	if isCheckpointPathExist(cr.Runtime.Name, i.Options) {
+		return NewImage(t.client, images.Image{}), nil
+	}
+
 	if cr.Image != "" {
 		if err := t.checkpointImage(ctx, &index, cr.Image); err != nil {
 			return nil, err
@@ -542,6 +554,7 @@ func (t *task) checkpointTask(ctx context.Context, index *v1.Index, request *tas
 	if err != nil {
 		return errdefs.FromGRPC(err)
 	}
+	// NOTE: response.Descriptors can be an empty slice if checkpoint image is jumped
 	// add the checkpoint descriptors to the index
 	for _, d := range response.Descriptors {
 		index.Manifests = append(index.Manifests, v1.Descriptor{
@@ -619,3 +632,24 @@ func writeContent(ctx context.Context, store content.Ingester, mediaType, ref st
 		Size:      size,
 	}, nil
 }
+
+// isCheckpointPathExist only suitable for runc runtime now
+func isCheckpointPathExist(runtime string, v interface{}) bool {
+	if v == nil {
+		return false
+	}
+
+	switch runtime {
+	case "io.containerd.runc.v1":
+		if opts, ok := v.(*options.CheckpointOptions); ok && opts.ImagePath != "" {
+			return true
+		}
+
+	case "io.containerd.runtime.v1.linux":
+		if opts, ok := v.(*runctypes.CheckpointOptions); ok && opts.ImagePath != "" {
+			return true
+		}
+	}
+
+	return false
+}

vendor/github.com/containerd/containerd/task_opts.go

@@ -27,11 +27,18 @@ import (
 	"github.com/containerd/containerd/errdefs"
 	"github.com/containerd/containerd/images"
 	"github.com/containerd/containerd/mount"
+	"github.com/containerd/containerd/runtime/linux/runctypes"
+	"github.com/containerd/containerd/runtime/v2/runc/options"
 	imagespec "github.com/opencontainers/image-spec/specs-go/v1"
 	"github.com/opencontainers/runtime-spec/specs-go"
 	"github.com/pkg/errors"
 )
 
+const (
+	v1runtime = "io.containerd.runtime.v1.linux"
+	v2runtime = "io.containerd.runc.v1"
+)
+
 // NewTaskOpts allows the caller to set options on a new task
 type NewTaskOpts func(context.Context, *Client, *TaskInfo) error
 
@@ -89,6 +96,60 @@ func WithCheckpointName(name string) CheckpointTaskOpts {
 	}
 }
 
+// WithCheckpointImagePath sets image path for checkpoint option
+func WithCheckpointImagePath(rt, path string) CheckpointTaskOpts {
+	return func(r *CheckpointTaskInfo) error {
+		switch rt {
+		case v1runtime:
+			if r.Options == nil {
+				r.Options = &runctypes.CheckpointOptions{}
+			}
+			opts, ok := r.Options.(*runctypes.CheckpointOptions)
+			if !ok {
+				return errors.New("invalid v1 checkpoint options format")
+			}
+			opts.ImagePath = path
+		case v2runtime:
+			if r.Options == nil {
+				r.Options = &options.CheckpointOptions{}
+			}
+			opts, ok := r.Options.(*options.CheckpointOptions)
+			if !ok {
+				return errors.New("invalid v2 checkpoint options format")
+			}
+			opts.ImagePath = path
+		}
+		return nil
+	}
+}
+
+// WithRestoreImagePath sets image path for create option
+func WithRestoreImagePath(rt, path string) NewTaskOpts {
+	return func(ctx context.Context, c *Client, ti *TaskInfo) error {
+		switch rt {
+		case v1runtime:
+			if ti.Options == nil {
+				ti.Options = &runctypes.CreateOptions{}
+			}
+			opts, ok := ti.Options.(*runctypes.CreateOptions)
+			if !ok {
+				return errors.New("invalid v1 create options format")
+			}
+			opts.CriuImagePath = path
+		case v2runtime:
+			if ti.Options == nil {
+				ti.Options = &options.Options{}
+			}
+			opts, ok := ti.Options.(*options.Options)
+			if !ok {
+				return errors.New("invalid v2 create options format")
+			}
+			opts.CriuImagePath = path
+		}
+		return nil
+	}
+}
+
 // ProcessDeleteOpts allows the caller to set options for the deletion of a task
 type ProcessDeleteOpts func(context.Context, Process) error
 

vendor/github.com/containerd/containerd/vendor.conf

@@ -1,6 +1,6 @@
 github.com/containerd/go-runc 5a6d9f37cfa36b15efba46dc7ea349fa9b7143c3
 github.com/containerd/console c12b1e7919c14469339a5d38f2f8ed9b64a9de23
-github.com/containerd/cgroups 5e610833b72089b37d0e615de9a92dfc043757c2
+github.com/containerd/cgroups 1152b960fcee041f50df15cdc67c29dbccf801ef
 github.com/containerd/typeurl a93fcdb778cd272c6e9b3028b2f42d813e785d40
 github.com/containerd/fifo 3d5202aec260678c48179c56f40e6f38a095738c
 github.com/containerd/btrfs 2e1aa0ddf94f91fa282b6ed87c23bf0d64911244
@@ -20,8 +20,8 @@ github.com/gogo/protobuf v1.0.0
 github.com/gogo/googleapis 08a7655d27152912db7aaf4f983275eaf8d128ef
 github.com/golang/protobuf v1.1.0
 github.com/opencontainers/runtime-spec eba862dc2470385a233c7507392675cbeadf7353 # v1.0.1-45-geba862d
-github.com/opencontainers/runc 00dc70017d222b178a002ed30e9321b12647af2d
+github.com/opencontainers/runc 96ec2177ae841256168fcf76954f7177af9446eb
-github.com/sirupsen/logrus v1.0.0
+github.com/sirupsen/logrus v1.0.3
 github.com/urfave/cli 7bc6a0acffa589f415f88aca16cc1de5ffd66f9c
 golang.org/x/net b3756b4b77d7b13260a0a2ec658753cf48922eac
 google.golang.org/grpc v1.12.0
@@ -33,7 +33,7 @@ golang.org/x/sync 450f422ab23cf9881c94e2db30cac0eb1b7cf80c
 github.com/BurntSushi/toml a368813c5e648fee92e5f6c30e3944ff9d5e8895
 github.com/grpc-ecosystem/go-grpc-prometheus 6b7015e65d366bf3f19b2b2a000a831940f0f7e0
 github.com/Microsoft/go-winio v0.4.11
-github.com/Microsoft/hcsshim v0.7.9
+github.com/Microsoft/hcsshim v0.8.3
 google.golang.org/genproto d80a6e20e776b0b17a324d0ba1ab50a39c8e8944
 golang.org/x/text 19e51611da83d6be54ddafce4a4af510cb3e9ea4
 github.com/containerd/ttrpc 2a805f71863501300ae1976d29f0454ae003e85a
@@ -43,8 +43,8 @@ github.com/google/go-cmp v0.1.0
 go.etcd.io/bbolt v1.3.1-etcd.8
 
 # cri dependencies
-github.com/containerd/cri 8506fe836677cc3bb23a16b68145128243d843b5 # release/1.2 branch
+github.com/containerd/cri f913714917d2456d7e65a0be84962b1ce8acb487 # release/1.2 branch
-github.com/containerd/go-cni 6d7b509a054a3cb1c35ed1865d4fde2f0cb547cd
+github.com/containerd/go-cni 40bcf8ec8acd7372be1d77031d585d5d8e561c90
 github.com/blang/semver v3.1.0
 github.com/containernetworking/cni v0.6.0
 github.com/containernetworking/plugins v0.7.0
@@ -81,9 +81,9 @@ k8s.io/kubernetes v1.12.0
 k8s.io/utils cd34563cd63c2bd7c6fe88a73c4dcf34ed8a67cb
 
 # zfs dependencies
-github.com/containerd/zfs 9a0b8b8b5982014b729cd34eb7cd7a11062aa6ec
+github.com/containerd/zfs 9f6ef3b1fe5144bd91fe5855b4eba81bc0d17d03
 github.com/mistifyio/go-zfs 166add352731e515512690329794ee593f1aaff2
 github.com/pborman/uuid c65b2f87fee37d1c7854c9164a450713c28d50cd
 
 # aufs dependencies
-github.com/containerd/aufs ffa39970e26ad01d81f540b21e65f9c1841a5f92
+github.com/containerd/aufs da3cf16bfbe68ba8f114f1536a05c01528a25434

vendor/github.com/containerd/containerd/version/version.go

@@ -0,0 +1,29 @@
+/*
+   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 version
+
+var (
+	// Package is filled at linking time
+	Package = "github.com/containerd/containerd"
+
+	// Version holds the complete version number. Filled in at linking time.
+	Version = "1.2.0+unknown"
+
+	// Revision is filled with the VCS (e.g. git) revision being used to build
+	// the program at linking time.
+	Revision = ""
+)

vendor/github.com/containerd/cri/vendor.conf

@@ -3,10 +3,10 @@ github.com/blang/semver v3.1.0
 github.com/BurntSushi/toml a368813c5e648fee92e5f6c30e3944ff9d5e8895
 github.com/containerd/cgroups 5e610833b72089b37d0e615de9a92dfc043757c2
 github.com/containerd/console c12b1e7919c14469339a5d38f2f8ed9b64a9de23
-github.com/containerd/containerd f88d3e5d6dfe9b7d7941ac5241649ad8240b9282
+github.com/containerd/containerd 15f19d7a67fa322e6de0ef4c6a1bf9da0f056554
-github.com/containerd/continuity 7f53d412b9eb1cbf744c2063185d703a0ee34700
+github.com/containerd/continuity bd77b46c8352f74eb12c85bdc01f4b90f69d66b4
 github.com/containerd/fifo 3d5202aec260678c48179c56f40e6f38a095738c
-github.com/containerd/go-cni 6d7b509a054a3cb1c35ed1865d4fde2f0cb547cd
+github.com/containerd/go-cni 40bcf8ec8acd7372be1d77031d585d5d8e561c90
 github.com/containerd/go-runc 5a6d9f37cfa36b15efba46dc7ea349fa9b7143c3
 github.com/containerd/ttrpc 2a805f71863501300ae1976d29f0454ae003e85a
 github.com/containerd/typeurl a93fcdb778cd272c6e9b3028b2f42d813e785d40
@@ -34,7 +34,7 @@ github.com/hashicorp/go-multierror ed905158d87462226a13fe39ddf685ea65f1c11f
 github.com/json-iterator/go 1.1.5
 github.com/matttproud/golang_protobuf_extensions v1.0.0
 github.com/Microsoft/go-winio v0.4.10
-github.com/Microsoft/hcsshim v0.7.4
+github.com/Microsoft/hcsshim v0.7.6
 github.com/modern-go/concurrent 1.0.3
 github.com/modern-go/reflect2 1.0.1
 github.com/opencontainers/go-digest c9281466c8b2f606084ac71339773efd177436e7

vendor/github.com/opencontainers/runc/README.md

@@ -68,6 +68,7 @@ make BUILDTAGS='seccomp apparmor'
 | selinux   | selinux process and mount labeling | <none>      |
 | apparmor  | apparmor profile support           | <none>      |
 | ambient   | ambient capability support         | kernel 4.3  |
+| nokmem    | disable kernel memory account      | <none>      |
 
 
 ### Running the test suite
@@ -263,3 +264,7 @@ PIDFile=/run/mycontainerid.pid
 [Install]
 WantedBy=multi-user.target
 ```
+
+## License
+
+The code and docs are released under the [Apache 2.0 license](LICENSE).

vendor/github.com/opencontainers/runc/libcontainer/README.md

@@ -148,6 +148,7 @@ config := &configs.Config{
 		{Type: configs.NEWPID},
 		{Type: configs.NEWUSER},
 		{Type: configs.NEWNET},
+		{Type: configs.NEWCGROUP},
 	}),
 	Cgroups: &configs.Cgroup{
 		Name:   "test-container",
@@ -323,6 +324,7 @@ generated when building libcontainer with docker.
 
 ## Copyright and license
 
-Code and documentation copyright 2014 Docker, inc. Code released under the Apache 2.0 license.
+Code and documentation copyright 2014 Docker, inc.
-Docs released under Creative commons.
+The code and documentation are released under the [Apache 2.0 license](../LICENSE).
-
+The documentation is also released under Creative Commons Attribution 4.0 International License.
+You may obtain a copy of the license, titled CC-BY-4.0, at http://creativecommons.org/licenses/by/4.0/.

vendor/github.com/opencontainers/runc/libcontainer/nsenter/nsexec.c

@@ -42,6 +42,12 @@ enum sync_t {
 	SYNC_ERR = 0xFF,	/* Fatal error, no turning back. The error code follows. */
 };
 
+/*
+ * Synchronisation value for cgroup namespace setup.
+ * The same constant is defined in process_linux.go as "createCgroupns".
+ */
+#define CREATECGROUPNS 0x80
+
 /* longjmp() arguments. */
 #define JUMP_PARENT 0x00
 #define JUMP_CHILD  0xA0
@@ -640,7 +646,6 @@ void nsexec(void)
 	case JUMP_PARENT:{
 			int len;
 			pid_t child, first_child = -1;
-			char buf[JSON_MAX];
 			bool ready = false;
 
 			/* For debugging. */
@@ -716,6 +721,18 @@ void nsexec(void)
 							kill(child, SIGKILL);
 							bail("failed to sync with child: write(SYNC_RECVPID_ACK)");
 						}
+
+						/* Send the init_func pid back to our parent.
+						 *
+						 * Send the init_func pid and the pid of the first child back to our parent.
+						 * We need to send both back because we can't reap the first child we created (CLONE_PARENT).
+						 * It becomes the responsibility of our parent to reap the first child.
+						 */
+						len = dprintf(pipenum, "{\"pid\": %d, \"pid_first\": %d}\n", child, first_child);
+						if (len < 0) {
+							kill(child, SIGKILL);
+							bail("unable to generate JSON for child pid");
+						}
 					}
 					break;
 				case SYNC_CHILD_READY:
@@ -759,23 +776,6 @@ void nsexec(void)
 					bail("unexpected sync value: %u", s);
 				}
 			}
-
-			/*
-			 * Send the init_func pid and the pid of the first child back to our parent.
-			 *
-			 * We need to send both back because we can't reap the first child we created (CLONE_PARENT).
-			 * It becomes the responsibility of our parent to reap the first child.
-			 */
-			len = snprintf(buf, JSON_MAX, "{\"pid\": %d, \"pid_first\": %d}\n", child, first_child);
-			if (len < 0) {
-				kill(child, SIGKILL);
-				bail("unable to generate JSON for child pid");
-			}
-			if (write(pipenum, buf, len) != len) {
-				kill(child, SIGKILL);
-				bail("unable to send child pid to bootstrapper");
-			}
-
 			exit(0);
 		}
 
@@ -862,14 +862,17 @@ void nsexec(void)
 				if (setresuid(0, 0, 0) < 0)
 					bail("failed to become root in user namespace");
 			}
-
 			/*
-			 * Unshare all of the namespaces. Note that we don't merge this
+			 * Unshare all of the namespaces. Now, it should be noted that this
-			 * with clone() because there were some old kernel versions where
+			 * ordering might break in the future (especially with rootless
-			 * clone(CLONE_PARENT | CLONE_NEWPID) was broken, so we'll just do
+			 * containers). But for now, it's not possible to split this into
-			 * it the long way.
+			 * CLONE_NEWUSER + [the rest] because of some RHEL SELinux issues.
+			 *
+			 * Note that we don't merge this with clone() because there were
+			 * some old kernel versions where clone(CLONE_PARENT | CLONE_NEWPID)
+			 * was broken, so we'll just do it the long way anyway.
 			 */
-			if (unshare(config.cloneflags) < 0)
+			if (unshare(config.cloneflags & ~CLONE_NEWCGROUP) < 0)
 				bail("failed to unshare namespaces");
 
 			/*
@@ -958,6 +961,18 @@ void nsexec(void)
 					bail("setgroups failed");
 			}
 
+			/* ... wait until our topmost parent has finished cgroup setup in p.manager.Apply() ... */
+			if (config.cloneflags & CLONE_NEWCGROUP) {
+				uint8_t value;
+				if (read(pipenum, &value, sizeof(value)) != sizeof(value))
+					bail("read synchronisation value failed");
+				if (value == CREATECGROUPNS) {
+					if (unshare(CLONE_NEWCGROUP) < 0)
+						bail("failed to unshare cgroup namespace");
+				} else
+					bail("received unknown synchronisation value");
+			}
+
 			s = SYNC_CHILD_READY;
 			if (write(syncfd, &s, sizeof(s)) != sizeof(s))
 				bail("failed to sync with patent: write(SYNC_CHILD_READY)");

vendor/github.com/opencontainers/runc/libcontainer/user/lookup_unix.go

@@ -5,6 +5,7 @@ package user
 import (
 	"io"
 	"os"
+	"strconv"
 
 	"golang.org/x/sys/unix"
 )
@@ -115,22 +116,23 @@ func CurrentGroup() (Group, error) {
 	return LookupGid(unix.Getgid())
 }
 
-func CurrentUserSubUIDs() ([]SubID, error) {
+func currentUserSubIDs(fileName string) ([]SubID, error) {
 	u, err := CurrentUser()
 	if err != nil {
 		return nil, err
 	}
-	return ParseSubIDFileFilter("/etc/subuid",
+	filter := func(entry SubID) bool {
-		func(entry SubID) bool { return entry.Name == u.Name })
+		return entry.Name == u.Name || entry.Name == strconv.Itoa(u.Uid)
+	}
+	return ParseSubIDFileFilter(fileName, filter)
 }
 
-func CurrentGroupSubGIDs() ([]SubID, error) {
+func CurrentUserSubUIDs() ([]SubID, error) {
-	g, err := CurrentGroup()
+	return currentUserSubIDs("/etc/subuid")
-	if err != nil {
+}
-		return nil, err
+
-	}
+func CurrentUserSubGIDs() ([]SubID, error) {
-	return ParseSubIDFileFilter("/etc/subgid",
+	return currentUserSubIDs("/etc/subgid")
-		func(entry SubID) bool { return entry.Name == g.Name })
 }
 
 func CurrentProcessUIDMap() ([]IDMap, error) {

vendor/github.com/opencontainers/runc/vendor.conf

@@ -1,7 +1,7 @@
 # OCI runtime-spec. When updating this, make sure you use a version tag rather
 # than a commit ID so it's much more obvious what version of the spec we are
 # using.
-github.com/opencontainers/runtime-spec v1.0.0
+github.com/opencontainers/runtime-spec 5684b8af48c1ac3b1451fa499724e30e3c20a294
 # Core libcontainer functionality.
 github.com/mrunalp/fileutils ed869b029674c0e9ce4c0dfa781405c2d9946d08
 github.com/opencontainers/selinux v1.0.0-rc1

vendor/github.com/sirupsen/logrus/README.md

@@ -1,22 +1,24 @@
 # Logrus <img src="http://i.imgur.com/hTeVwmJ.png" width="40" height="40" alt=":walrus:" class="emoji" title=":walrus:"/>&nbsp;[![Build Status](https://travis-ci.org/sirupsen/logrus.svg?branch=master)](https://travis-ci.org/sirupsen/logrus)&nbsp;[![GoDoc](https://godoc.org/github.com/sirupsen/logrus?status.svg)](https://godoc.org/github.com/sirupsen/logrus)
 
 Logrus is a structured logger for Go (golang), completely API compatible with
-the standard library logger. [Godoc][godoc]. **Please note the Logrus API is not
+the standard library logger.
-yet stable (pre 1.0). Logrus itself is completely stable and has been used in
-many large deployments. The core API is unlikely to change much but please
-version control your Logrus to make sure you aren't fetching latest `master` on
-every build.**
 
-**Seeing weird case-sensitive problems?** Unfortunately, the author failed to
+**Seeing weird case-sensitive problems?** It's in the past been possible to
-realize the consequences of renaming to lower-case. Due to the Go package
+import Logrus as both upper- and lower-case. Due to the Go package environment,
-environment, this caused issues. Regretfully, there's no turning back now.
+this caused issues in the community and we needed a standard. Some environments
+experienced problems with the upper-case variant, so the lower-case was decided.
 Everything using `logrus` will need to use the lower-case:
 `github.com/sirupsen/logrus`. Any package that isn't, should be changed.
 
-I am terribly sorry for this inconvenience. Logrus strives hard for backwards
+To fix Glide, see [these
-compatibility, and the author failed to realize the cascading consequences of
-such a name-change. To fix Glide, see [these
 comments](https://github.com/sirupsen/logrus/issues/553#issuecomment-306591437).
+For an in-depth explanation of the casing issue, see [this
+comment](https://github.com/sirupsen/logrus/issues/570#issuecomment-313933276).
+
+**Are you interested in assisting in maintaining Logrus?** Currently I have a
+lot of obligations, and I am unable to provide Logrus with the maintainership it
+needs. If you'd like to help, please reach out to me at `simon at author's
+username dot com`.
 
 Nicely color-coded in development (when a TTY is attached, otherwise just
 plain text):
@@ -266,6 +268,7 @@ Note: Syslog hook also support connecting to local syslog (Ex. "/dev/log" or "/v
 | [Logrusly](https://github.com/sebest/logrusly) | Send logs to [Loggly](https://www.loggly.com/) |
 | [Logstash](https://github.com/bshuster-repo/logrus-logstash-hook) | Hook for logging to [Logstash](https://www.elastic.co/products/logstash) |
 | [Mail](https://github.com/zbindenren/logrus_mail) | Hook for sending exceptions via mail |
+| [Mattermost](https://github.com/shuLhan/mattermost-integration/tree/master/hooks/logrus) | Hook for logging to [Mattermost](https://mattermost.com/) |
 | [Mongodb](https://github.com/weekface/mgorus) | Hook for logging to mongodb |
 | [NATS-Hook](https://github.com/rybit/nats_logrus_hook) | Hook for logging to [NATS](https://nats.io) |
 | [Octokit](https://github.com/dorajistyle/logrus-octokit-hook) | Hook for logging to github via octokit |
@@ -280,7 +283,7 @@ Note: Syslog hook also support connecting to local syslog (Ex. "/dev/log" or "/v
 | [Slackrus](https://github.com/johntdyer/slackrus) | Hook for Slack chat. |
 | [Stackdriver](https://github.com/knq/sdhook) | Hook for logging to [Google Stackdriver](https://cloud.google.com/logging/) |
 | [Sumorus](https://github.com/doublefree/sumorus) | Hook for logging to [SumoLogic](https://www.sumologic.com/)|
-| [Syslog](https://github.com/Sirupsen/logrus/blob/master/hooks/syslog/syslog.go) | Send errors to remote syslog server. Uses standard library `log/syslog` behind the scenes. |
+| [Syslog](https://github.com/sirupsen/logrus/blob/master/hooks/syslog/syslog.go) | Send errors to remote syslog server. Uses standard library `log/syslog` behind the scenes. |
 | [Syslog TLS](https://github.com/shinji62/logrus-syslog-ng) | Send errors to remote syslog server with TLS support. |
 | [TraceView](https://github.com/evalphobia/logrus_appneta) | Hook for logging to [AppNeta TraceView](https://www.appneta.com/products/traceview/) |
 | [Typetalk](https://github.com/dragon3/logrus-typetalk-hook) | Hook for logging to [Typetalk](https://www.typetalk.in/) |
@@ -369,6 +372,7 @@ The built-in logging formatters are:
 
 Third party logging formatters:
 
+* [`FluentdFormatter`](https://github.com/joonix/log). Formats entries that can by parsed by Kubernetes and Google Container Engine.
 * [`logstash`](https://github.com/bshuster-repo/logrus-logstash-hook). Logs fields as [Logstash](http://logstash.net) Events.
 * [`prefixed`](https://github.com/x-cray/logrus-prefixed-formatter). Displays log entry source along with alternative layout.
 * [`zalgo`](https://github.com/aybabtme/logzalgo). Invoking the P͉̫o̳̼̊w̖͈̰͎e̬͔̭͂r͚̼̹̲ ̫͓͉̳͈ō̠͕͖̚f̝͍̠ ͕̲̞͖͑Z̖̫̤̫ͪa͉̬͈̗l͖͎g̳̥o̰̥̅!̣͔̲̻͊̄ ̙̘̦̹̦.
@@ -449,13 +453,13 @@ Logrus has a built in facility for asserting the presence of log messages. This
 ```go
 import(
   "github.com/sirupsen/logrus"
-  "github.com/sirupsen/logrus/hooks/null"
+  "github.com/sirupsen/logrus/hooks/test"
   "github.com/stretchr/testify/assert"
   "testing"
 )
 
 func TestSomething(t*testing.T){
-  logger, hook := null.NewNullLogger()
+  logger, hook := test.NewNullLogger()
   logger.Error("Helloerror")
 
   assert.Equal(t, 1, len(hook.Entries))

vendor/github.com/sirupsen/logrus/entry.go

@@ -35,6 +35,7 @@ type Entry struct {
 	Time time.Time
 
 	// Level the log entry was logged at: Debug, Info, Warn, Error, Fatal or Panic
+	// This field will be set on entry firing and the value will be equal to the one in Logger struct field.
 	Level Level
 
 	// Message passed to Debug, Info, Warn, Error, Fatal or Panic

vendor/github.com/sirupsen/logrus/exported.go

@@ -31,7 +31,7 @@ func SetFormatter(formatter Formatter) {
 func SetLevel(level Level) {
 	std.mu.Lock()
 	defer std.mu.Unlock()
-	std.setLevel(level)
+	std.SetLevel(level)
 }
 
 // GetLevel returns the standard logger level.

vendor/github.com/sirupsen/logrus/formatter.go

@@ -2,7 +2,7 @@ package logrus
 
 import "time"
 
-const DefaultTimestampFormat = time.RFC3339
+const defaultTimestampFormat = time.RFC3339
 
 // The Formatter interface is used to implement a custom Formatter. It takes an
 // `Entry`. It exposes all the fields, including the default ones:

vendor/github.com/sirupsen/logrus/json_formatter.go

@@ -6,8 +6,11 @@ import (
 )
 
 type fieldKey string
+
+// FieldMap allows customization of the key names for default fields.
 type FieldMap map[fieldKey]string
 
+// Default key names for the default fields
 const (
 	FieldKeyMsg   = "msg"
 	FieldKeyLevel = "level"
@@ -22,6 +25,7 @@ func (f FieldMap) resolve(key fieldKey) string {
 	return string(key)
 }
 
+// JSONFormatter formats logs into parsable json
 type JSONFormatter struct {
 	// TimestampFormat sets the format used for marshaling timestamps.
 	TimestampFormat string
@@ -29,7 +33,7 @@ type JSONFormatter struct {
 	// DisableTimestamp allows disabling automatic timestamps in output
 	DisableTimestamp bool
 
-	// FieldMap allows users to customize the names of keys for various fields.
+	// FieldMap allows users to customize the names of keys for default fields.
 	// As an example:
 	// formatter := &JSONFormatter{
 	//   	FieldMap: FieldMap{
@@ -41,6 +45,7 @@ type JSONFormatter struct {
 	FieldMap FieldMap
 }
 
+// Format renders a single log entry
 func (f *JSONFormatter) Format(entry *Entry) ([]byte, error) {
 	data := make(Fields, len(entry.Data)+3)
 	for k, v := range entry.Data {
@@ -57,7 +62,7 @@ func (f *JSONFormatter) Format(entry *Entry) ([]byte, error) {
 
 	timestampFormat := f.TimestampFormat
 	if timestampFormat == "" {
-		timestampFormat = DefaultTimestampFormat
+		timestampFormat = defaultTimestampFormat
 	}
 
 	if !f.DisableTimestamp {

vendor/github.com/sirupsen/logrus/logger.go

@@ -25,7 +25,7 @@ type Logger struct {
 	Formatter Formatter
 	// The logging level the logger should log at. This is typically (and defaults
 	// to) `logrus.Info`, which allows Info(), Warn(), Error() and Fatal() to be
-	// logged. `logrus.Debug` is useful in
+	// logged.
 	Level Level
 	// Used to sync writing to the log. Locking is enabled by Default
 	mu MutexWrap
@@ -312,6 +312,6 @@ func (logger *Logger) level() Level {
 	return Level(atomic.LoadUint32((*uint32)(&logger.Level)))
 }
 
-func (logger *Logger) setLevel(level Level) {
+func (logger *Logger) SetLevel(level Level) {
 	atomic.StoreUint32((*uint32)(&logger.Level), uint32(level))
 }

vendor/github.com/sirupsen/logrus/terminal_appengine.go

@@ -1,10 +0,0 @@
-// +build appengine
-
-package logrus
-
-import "io"
-
-// IsTerminal returns true if stderr's file descriptor is a terminal.
-func IsTerminal(f io.Writer) bool {
-	return true
-}

vendor/github.com/sirupsen/logrus/terminal_bsd.go

@@ -3,8 +3,8 @@
 
 package logrus
 
-import "syscall"
+import "golang.org/x/sys/unix"
 
-const ioctlReadTermios = syscall.TIOCGETA
+const ioctlReadTermios = unix.TIOCGETA
 
-type Termios syscall.Termios
+type Termios unix.Termios

vendor/github.com/sirupsen/logrus/terminal_linux.go

@@ -7,8 +7,8 @@
 
 package logrus
 
-import "syscall"
+import "golang.org/x/sys/unix"
 
-const ioctlReadTermios = syscall.TCGETS
+const ioctlReadTermios = unix.TCGETS
 
-type Termios syscall.Termios
+type Termios unix.Termios

vendor/github.com/sirupsen/logrus/terminal_notwindows.go

@@ -1,28 +0,0 @@
-// Based on ssh/terminal:
-// Copyright 2011 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build linux darwin freebsd openbsd netbsd dragonfly
-// +build !appengine
-
-package logrus
-
-import (
-	"io"
-	"os"
-	"syscall"
-	"unsafe"
-)
-
-// IsTerminal returns true if stderr's file descriptor is a terminal.
-func IsTerminal(f io.Writer) bool {
-	var termios Termios
-	switch v := f.(type) {
-	case *os.File:
-		_, _, err := syscall.Syscall6(syscall.SYS_IOCTL, uintptr(v.Fd()), ioctlReadTermios, uintptr(unsafe.Pointer(&termios)), 0, 0, 0)
-		return err == 0
-	default:
-		return false
-	}
-}

vendor/github.com/sirupsen/logrus/terminal_solaris.go

@@ -1,21 +0,0 @@
-// +build solaris,!appengine
-
-package logrus
-
-import (
-	"io"
-	"os"
-
-	"golang.org/x/sys/unix"
-)
-
-// IsTerminal returns true if the given file descriptor is a terminal.
-func IsTerminal(f io.Writer) bool {
-	switch v := f.(type) {
-	case *os.File:
-		_, err := unix.IoctlGetTermios(int(v.Fd()), unix.TCGETA)
-		return err == nil
-	default:
-		return false
-	}
-}

vendor/github.com/sirupsen/logrus/terminal_windows.go

@@ -1,82 +0,0 @@
-// Based on ssh/terminal:
-// Copyright 2011 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build windows,!appengine
-
-package logrus
-
-import (
-	"bytes"
-	"errors"
-	"io"
-	"os"
-	"os/exec"
-	"strconv"
-	"strings"
-	"syscall"
-	"unsafe"
-)
-
-var kernel32 = syscall.NewLazyDLL("kernel32.dll")
-
-var (
-	procGetConsoleMode = kernel32.NewProc("GetConsoleMode")
-	procSetConsoleMode = kernel32.NewProc("SetConsoleMode")
-)
-
-const (
-	enableProcessedOutput           = 0x0001
-	enableWrapAtEolOutput           = 0x0002
-	enableVirtualTerminalProcessing = 0x0004
-)
-
-func getVersion() (float64, error) {
-	stdout, stderr := &bytes.Buffer{}, &bytes.Buffer{}
-	cmd := exec.Command("cmd", "ver")
-	cmd.Stdout = stdout
-	cmd.Stderr = stderr
-	err := cmd.Run()
-	if err != nil {
-		return -1, err
-	}
-	
-	// The output should be like "Microsoft Windows [Version XX.X.XXXXXX]"
-	version := strings.Replace(stdout.String(), "\n", "", -1)
-	version = strings.Replace(version, "\r\n", "", -1)
-
-	x1 := strings.Index(version, "[Version")
-
-	if x1 == -1 || strings.Index(version, "]") == -1 {
-		return -1, errors.New("Can't determine Windows version")
-	}
-
-	return strconv.ParseFloat(version[x1+9:x1+13], 64)
-}
-
-func init() {
-	ver, err := getVersion()
-	if err != nil {
-		return
-	}
-
-	// Activate Virtual Processing for Windows CMD
-	// Info: https://msdn.microsoft.com/en-us/library/windows/desktop/ms686033(v=vs.85).aspx
-	if ver >= 10 {
-		handle := syscall.Handle(os.Stderr.Fd())
-		procSetConsoleMode.Call(uintptr(handle), enableProcessedOutput|enableWrapAtEolOutput|enableVirtualTerminalProcessing)
-	}
-}
-
-// IsTerminal returns true if stderr's file descriptor is a terminal.
-func IsTerminal(f io.Writer) bool {
-	switch v := f.(type) {
-	case *os.File:
-		var st uint32
-		r, _, e := syscall.Syscall(procGetConsoleMode.Addr(), 2, uintptr(v.Fd()), uintptr(unsafe.Pointer(&st)), 0)
-		return r != 0 && e == 0
-	default:
-		return false
-	}
-}

vendor/github.com/sirupsen/logrus/text_formatter.go

@@ -3,10 +3,14 @@ package logrus
 import (
 	"bytes"
 	"fmt"
+	"io"
+	"os"
 	"sort"
 	"strings"
 	"sync"
 	"time"
+
+	"golang.org/x/crypto/ssh/terminal"
 )
 
 const (
@@ -14,7 +18,7 @@ const (
 	red     = 31
 	green   = 32
 	yellow  = 33
-	blue    = 34
+	blue    = 36
 	gray    = 37
 )
 
@@ -26,6 +30,7 @@ func init() {
 	baseTimestamp = time.Now()
 }
 
+// TextFormatter formats logs into text
 type TextFormatter struct {
 	// Set to true to bypass checking for a TTY before outputting colors.
 	ForceColors bool
@@ -52,10 +57,6 @@ type TextFormatter struct {
 	// QuoteEmptyFields will wrap empty fields in quotes if true
 	QuoteEmptyFields bool
 
-	// QuoteCharacter can be set to the override the default quoting character "
-	// with something else. For example: ', or `.
-	QuoteCharacter string
-
 	// Whether the logger's out is to a terminal
 	isTerminal bool
 
@@ -63,14 +64,21 @@ type TextFormatter struct {
 }
 
 func (f *TextFormatter) init(entry *Entry) {
-	if len(f.QuoteCharacter) == 0 {
-		f.QuoteCharacter = "\""
-	}
 	if entry.Logger != nil {
-		f.isTerminal = IsTerminal(entry.Logger.Out)
+		f.isTerminal = f.checkIfTerminal(entry.Logger.Out)
 	}
 }
 
+func (f *TextFormatter) checkIfTerminal(w io.Writer) bool {
+	switch v := w.(type) {
+	case *os.File:
+		return terminal.IsTerminal(int(v.Fd()))
+	default:
+		return false
+	}
+}
+
+// Format renders a single log entry
 func (f *TextFormatter) Format(entry *Entry) ([]byte, error) {
 	var b *bytes.Buffer
 	keys := make([]string, 0, len(entry.Data))
@@ -95,7 +103,7 @@ func (f *TextFormatter) Format(entry *Entry) ([]byte, error) {
 
 	timestampFormat := f.TimestampFormat
 	if timestampFormat == "" {
-		timestampFormat = DefaultTimestampFormat
+		timestampFormat = defaultTimestampFormat
 	}
 	if isColored {
 		f.printColored(b, entry, keys, timestampFormat)
@@ -153,7 +161,7 @@ func (f *TextFormatter) needsQuoting(text string) bool {
 		if !((ch >= 'a' && ch <= 'z') ||
 			(ch >= 'A' && ch <= 'Z') ||
 			(ch >= '0' && ch <= '9') ||
-			ch == '-' || ch == '.') {
+			ch == '-' || ch == '.' || ch == '_' || ch == '/' || ch == '@' || ch == '^' || ch == '+') {
 			return true
 		}
 	}
@@ -161,29 +169,23 @@ func (f *TextFormatter) needsQuoting(text string) bool {
 }
 
 func (f *TextFormatter) appendKeyValue(b *bytes.Buffer, key string, value interface{}) {
-
+	if b.Len() > 0 {
+		b.WriteByte(' ')
+	}
 	b.WriteString(key)
 	b.WriteByte('=')
 	f.appendValue(b, value)
-	b.WriteByte(' ')
 }
 
 func (f *TextFormatter) appendValue(b *bytes.Buffer, value interface{}) {
-	switch value := value.(type) {
+	stringVal, ok := value.(string)
-	case string:
+	if !ok {
-		if !f.needsQuoting(value) {
+		stringVal = fmt.Sprint(value)
-			b.WriteString(value)
+	}
-		} else {
+
-			fmt.Fprintf(b, "%s%v%s", f.QuoteCharacter, value, f.QuoteCharacter)
+	if !f.needsQuoting(stringVal) {
-		}
+		b.WriteString(stringVal)
-	case error:
+	} else {
-		errmsg := value.Error()
+		b.WriteString(fmt.Sprintf("%q", stringVal))
-		if !f.needsQuoting(errmsg) {
-			b.WriteString(errmsg)
-		} else {
-			fmt.Fprintf(b, "%s%v%s", f.QuoteCharacter, errmsg, f.QuoteCharacter)
-		}
-	default:
-		fmt.Fprint(b, value)
 	}
 }

vendor/golang.org/x/crypto/ssh/terminal/terminal.go

@@ -0,0 +1,951 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package terminal
+
+import (
+	"bytes"
+	"io"
+	"sync"
+	"unicode/utf8"
+)
+
+// EscapeCodes contains escape sequences that can be written to the terminal in
+// order to achieve different styles of text.
+type EscapeCodes struct {
+	// Foreground colors
+	Black, Red, Green, Yellow, Blue, Magenta, Cyan, White []byte
+
+	// Reset all attributes
+	Reset []byte
+}
+
+var vt100EscapeCodes = EscapeCodes{
+	Black:   []byte{keyEscape, '[', '3', '0', 'm'},
+	Red:     []byte{keyEscape, '[', '3', '1', 'm'},
+	Green:   []byte{keyEscape, '[', '3', '2', 'm'},
+	Yellow:  []byte{keyEscape, '[', '3', '3', 'm'},
+	Blue:    []byte{keyEscape, '[', '3', '4', 'm'},
+	Magenta: []byte{keyEscape, '[', '3', '5', 'm'},
+	Cyan:    []byte{keyEscape, '[', '3', '6', 'm'},
+	White:   []byte{keyEscape, '[', '3', '7', 'm'},
+
+	Reset: []byte{keyEscape, '[', '0', 'm'},
+}
+
+// Terminal contains the state for running a VT100 terminal that is capable of
+// reading lines of input.
+type Terminal struct {
+	// AutoCompleteCallback, if non-null, is called for each keypress with
+	// the full input line and the current position of the cursor (in
+	// bytes, as an index into |line|). If it returns ok=false, the key
+	// press is processed normally. Otherwise it returns a replacement line
+	// and the new cursor position.
+	AutoCompleteCallback func(line string, pos int, key rune) (newLine string, newPos int, ok bool)
+
+	// Escape contains a pointer to the escape codes for this terminal.
+	// It's always a valid pointer, although the escape codes themselves
+	// may be empty if the terminal doesn't support them.
+	Escape *EscapeCodes
+
+	// lock protects the terminal and the state in this object from
+	// concurrent processing of a key press and a Write() call.
+	lock sync.Mutex
+
+	c      io.ReadWriter
+	prompt []rune
+
+	// line is the current line being entered.
+	line []rune
+	// pos is the logical position of the cursor in line
+	pos int
+	// echo is true if local echo is enabled
+	echo bool
+	// pasteActive is true iff there is a bracketed paste operation in
+	// progress.
+	pasteActive bool
+
+	// cursorX contains the current X value of the cursor where the left
+	// edge is 0. cursorY contains the row number where the first row of
+	// the current line is 0.
+	cursorX, cursorY int
+	// maxLine is the greatest value of cursorY so far.
+	maxLine int
+
+	termWidth, termHeight int
+
+	// outBuf contains the terminal data to be sent.
+	outBuf []byte
+	// remainder contains the remainder of any partial key sequences after
+	// a read. It aliases into inBuf.
+	remainder []byte
+	inBuf     [256]byte
+
+	// history contains previously entered commands so that they can be
+	// accessed with the up and down keys.
+	history stRingBuffer
+	// historyIndex stores the currently accessed history entry, where zero
+	// means the immediately previous entry.
+	historyIndex int
+	// When navigating up and down the history it's possible to return to
+	// the incomplete, initial line. That value is stored in
+	// historyPending.
+	historyPending string
+}
+
+// NewTerminal runs a VT100 terminal on the given ReadWriter. If the ReadWriter is
+// a local terminal, that terminal must first have been put into raw mode.
+// prompt is a string that is written at the start of each input line (i.e.
+// "> ").
+func NewTerminal(c io.ReadWriter, prompt string) *Terminal {
+	return &Terminal{
+		Escape:       &vt100EscapeCodes,
+		c:            c,
+		prompt:       []rune(prompt),
+		termWidth:    80,
+		termHeight:   24,
+		echo:         true,
+		historyIndex: -1,
+	}
+}
+
+const (
+	keyCtrlD     = 4
+	keyCtrlU     = 21
+	keyEnter     = '\r'
+	keyEscape    = 27
+	keyBackspace = 127
+	keyUnknown   = 0xd800 /* UTF-16 surrogate area */ + iota
+	keyUp
+	keyDown
+	keyLeft
+	keyRight
+	keyAltLeft
+	keyAltRight
+	keyHome
+	keyEnd
+	keyDeleteWord
+	keyDeleteLine
+	keyClearScreen
+	keyPasteStart
+	keyPasteEnd
+)
+
+var (
+	crlf       = []byte{'\r', '\n'}
+	pasteStart = []byte{keyEscape, '[', '2', '0', '0', '~'}
+	pasteEnd   = []byte{keyEscape, '[', '2', '0', '1', '~'}
+)
+
+// bytesToKey tries to parse a key sequence from b. If successful, it returns
+// the key and the remainder of the input. Otherwise it returns utf8.RuneError.
+func bytesToKey(b []byte, pasteActive bool) (rune, []byte) {
+	if len(b) == 0 {
+		return utf8.RuneError, nil
+	}
+
+	if !pasteActive {
+		switch b[0] {
+		case 1: // ^A
+			return keyHome, b[1:]
+		case 5: // ^E
+			return keyEnd, b[1:]
+		case 8: // ^H
+			return keyBackspace, b[1:]
+		case 11: // ^K
+			return keyDeleteLine, b[1:]
+		case 12: // ^L
+			return keyClearScreen, b[1:]
+		case 23: // ^W
+			return keyDeleteWord, b[1:]
+		}
+	}
+
+	if b[0] != keyEscape {
+		if !utf8.FullRune(b) {
+			return utf8.RuneError, b
+		}
+		r, l := utf8.DecodeRune(b)
+		return r, b[l:]
+	}
+
+	if !pasteActive && len(b) >= 3 && b[0] == keyEscape && b[1] == '[' {
+		switch b[2] {
+		case 'A':
+			return keyUp, b[3:]
+		case 'B':
+			return keyDown, b[3:]
+		case 'C':
+			return keyRight, b[3:]
+		case 'D':
+			return keyLeft, b[3:]
+		case 'H':
+			return keyHome, b[3:]
+		case 'F':
+			return keyEnd, b[3:]
+		}
+	}
+
+	if !pasteActive && len(b) >= 6 && b[0] == keyEscape && b[1] == '[' && b[2] == '1' && b[3] == ';' && b[4] == '3' {
+		switch b[5] {
+		case 'C':
+			return keyAltRight, b[6:]
+		case 'D':
+			return keyAltLeft, b[6:]
+		}
+	}
+
+	if !pasteActive && len(b) >= 6 && bytes.Equal(b[:6], pasteStart) {
+		return keyPasteStart, b[6:]
+	}
+
+	if pasteActive && len(b) >= 6 && bytes.Equal(b[:6], pasteEnd) {
+		return keyPasteEnd, b[6:]
+	}
+
+	// If we get here then we have a key that we don't recognise, or a
+	// partial sequence. It's not clear how one should find the end of a
+	// sequence without knowing them all, but it seems that [a-zA-Z~] only
+	// appears at the end of a sequence.
+	for i, c := range b[0:] {
+		if c >= 'a' && c <= 'z' || c >= 'A' && c <= 'Z' || c == '~' {
+			return keyUnknown, b[i+1:]
+		}
+	}
+
+	return utf8.RuneError, b
+}
+
+// queue appends data to the end of t.outBuf
+func (t *Terminal) queue(data []rune) {
+	t.outBuf = append(t.outBuf, []byte(string(data))...)
+}
+
+var eraseUnderCursor = []rune{' ', keyEscape, '[', 'D'}
+var space = []rune{' '}
+
+func isPrintable(key rune) bool {
+	isInSurrogateArea := key >= 0xd800 && key <= 0xdbff
+	return key >= 32 && !isInSurrogateArea
+}
+
+// moveCursorToPos appends data to t.outBuf which will move the cursor to the
+// given, logical position in the text.
+func (t *Terminal) moveCursorToPos(pos int) {
+	if !t.echo {
+		return
+	}
+
+	x := visualLength(t.prompt) + pos
+	y := x / t.termWidth
+	x = x % t.termWidth
+
+	up := 0
+	if y < t.cursorY {
+		up = t.cursorY - y
+	}
+
+	down := 0
+	if y > t.cursorY {
+		down = y - t.cursorY
+	}
+
+	left := 0
+	if x < t.cursorX {
+		left = t.cursorX - x
+	}
+
+	right := 0
+	if x > t.cursorX {
+		right = x - t.cursorX
+	}
+
+	t.cursorX = x
+	t.cursorY = y
+	t.move(up, down, left, right)
+}
+
+func (t *Terminal) move(up, down, left, right int) {
+	movement := make([]rune, 3*(up+down+left+right))
+	m := movement
+	for i := 0; i < up; i++ {
+		m[0] = keyEscape
+		m[1] = '['
+		m[2] = 'A'
+		m = m[3:]
+	}
+	for i := 0; i < down; i++ {
+		m[0] = keyEscape
+		m[1] = '['
+		m[2] = 'B'
+		m = m[3:]
+	}
+	for i := 0; i < left; i++ {
+		m[0] = keyEscape
+		m[1] = '['
+		m[2] = 'D'
+		m = m[3:]
+	}
+	for i := 0; i < right; i++ {
+		m[0] = keyEscape
+		m[1] = '['
+		m[2] = 'C'
+		m = m[3:]
+	}
+
+	t.queue(movement)
+}
+
+func (t *Terminal) clearLineToRight() {
+	op := []rune{keyEscape, '[', 'K'}
+	t.queue(op)
+}
+
+const maxLineLength = 4096
+
+func (t *Terminal) setLine(newLine []rune, newPos int) {
+	if t.echo {
+		t.moveCursorToPos(0)
+		t.writeLine(newLine)
+		for i := len(newLine); i < len(t.line); i++ {
+			t.writeLine(space)
+		}
+		t.moveCursorToPos(newPos)
+	}
+	t.line = newLine
+	t.pos = newPos
+}
+
+func (t *Terminal) advanceCursor(places int) {
+	t.cursorX += places
+	t.cursorY += t.cursorX / t.termWidth
+	if t.cursorY > t.maxLine {
+		t.maxLine = t.cursorY
+	}
+	t.cursorX = t.cursorX % t.termWidth
+
+	if places > 0 && t.cursorX == 0 {
+		// Normally terminals will advance the current position
+		// when writing a character. But that doesn't happen
+		// for the last character in a line. However, when
+		// writing a character (except a new line) that causes
+		// a line wrap, the position will be advanced two
+		// places.
+		//
+		// So, if we are stopping at the end of a line, we
+		// need to write a newline so that our cursor can be
+		// advanced to the next line.
+		t.outBuf = append(t.outBuf, '\r', '\n')
+	}
+}
+
+func (t *Terminal) eraseNPreviousChars(n int) {
+	if n == 0 {
+		return
+	}
+
+	if t.pos < n {
+		n = t.pos
+	}
+	t.pos -= n
+	t.moveCursorToPos(t.pos)
+
+	copy(t.line[t.pos:], t.line[n+t.pos:])
+	t.line = t.line[:len(t.line)-n]
+	if t.echo {
+		t.writeLine(t.line[t.pos:])
+		for i := 0; i < n; i++ {
+			t.queue(space)
+		}
+		t.advanceCursor(n)
+		t.moveCursorToPos(t.pos)
+	}
+}
+
+// countToLeftWord returns then number of characters from the cursor to the
+// start of the previous word.
+func (t *Terminal) countToLeftWord() int {
+	if t.pos == 0 {
+		return 0
+	}
+
+	pos := t.pos - 1
+	for pos > 0 {
+		if t.line[pos] != ' ' {
+			break
+		}
+		pos--
+	}
+	for pos > 0 {
+		if t.line[pos] == ' ' {
+			pos++
+			break
+		}
+		pos--
+	}
+
+	return t.pos - pos
+}
+
+// countToRightWord returns then number of characters from the cursor to the
+// start of the next word.
+func (t *Terminal) countToRightWord() int {
+	pos := t.pos
+	for pos < len(t.line) {
+		if t.line[pos] == ' ' {
+			break
+		}
+		pos++
+	}
+	for pos < len(t.line) {
+		if t.line[pos] != ' ' {
+			break
+		}
+		pos++
+	}
+	return pos - t.pos
+}
+
+// visualLength returns the number of visible glyphs in s.
+func visualLength(runes []rune) int {
+	inEscapeSeq := false
+	length := 0
+
+	for _, r := range runes {
+		switch {
+		case inEscapeSeq:
+			if (r >= 'a' && r <= 'z') || (r >= 'A' && r <= 'Z') {
+				inEscapeSeq = false
+			}
+		case r == '\x1b':
+			inEscapeSeq = true
+		default:
+			length++
+		}
+	}
+
+	return length
+}
+
+// handleKey processes the given key and, optionally, returns a line of text
+// that the user has entered.
+func (t *Terminal) handleKey(key rune) (line string, ok bool) {
+	if t.pasteActive && key != keyEnter {
+		t.addKeyToLine(key)
+		return
+	}
+
+	switch key {
+	case keyBackspace:
+		if t.pos == 0 {
+			return
+		}
+		t.eraseNPreviousChars(1)
+	case keyAltLeft:
+		// move left by a word.
+		t.pos -= t.countToLeftWord()
+		t.moveCursorToPos(t.pos)
+	case keyAltRight:
+		// move right by a word.
+		t.pos += t.countToRightWord()
+		t.moveCursorToPos(t.pos)
+	case keyLeft:
+		if t.pos == 0 {
+			return
+		}
+		t.pos--
+		t.moveCursorToPos(t.pos)
+	case keyRight:
+		if t.pos == len(t.line) {
+			return
+		}
+		t.pos++
+		t.moveCursorToPos(t.pos)
+	case keyHome:
+		if t.pos == 0 {
+			return
+		}
+		t.pos = 0
+		t.moveCursorToPos(t.pos)
+	case keyEnd:
+		if t.pos == len(t.line) {
+			return
+		}
+		t.pos = len(t.line)
+		t.moveCursorToPos(t.pos)
+	case keyUp:
+		entry, ok := t.history.NthPreviousEntry(t.historyIndex + 1)
+		if !ok {
+			return "", false
+		}
+		if t.historyIndex == -1 {
+			t.historyPending = string(t.line)
+		}
+		t.historyIndex++
+		runes := []rune(entry)
+		t.setLine(runes, len(runes))
+	case keyDown:
+		switch t.historyIndex {
+		case -1:
+			return
+		case 0:
+			runes := []rune(t.historyPending)
+			t.setLine(runes, len(runes))
+			t.historyIndex--
+		default:
+			entry, ok := t.history.NthPreviousEntry(t.historyIndex - 1)
+			if ok {
+				t.historyIndex--
+				runes := []rune(entry)
+				t.setLine(runes, len(runes))
+			}
+		}
+	case keyEnter:
+		t.moveCursorToPos(len(t.line))
+		t.queue([]rune("\r\n"))
+		line = string(t.line)
+		ok = true
+		t.line = t.line[:0]
+		t.pos = 0
+		t.cursorX = 0
+		t.cursorY = 0
+		t.maxLine = 0
+	case keyDeleteWord:
+		// Delete zero or more spaces and then one or more characters.
+		t.eraseNPreviousChars(t.countToLeftWord())
+	case keyDeleteLine:
+		// Delete everything from the current cursor position to the
+		// end of line.
+		for i := t.pos; i < len(t.line); i++ {
+			t.queue(space)
+			t.advanceCursor(1)
+		}
+		t.line = t.line[:t.pos]
+		t.moveCursorToPos(t.pos)
+	case keyCtrlD:
+		// Erase the character under the current position.
+		// The EOF case when the line is empty is handled in
+		// readLine().
+		if t.pos < len(t.line) {
+			t.pos++
+			t.eraseNPreviousChars(1)
+		}
+	case keyCtrlU:
+		t.eraseNPreviousChars(t.pos)
+	case keyClearScreen:
+		// Erases the screen and moves the cursor to the home position.
+		t.queue([]rune("\x1b[2J\x1b[H"))
+		t.queue(t.prompt)
+		t.cursorX, t.cursorY = 0, 0
+		t.advanceCursor(visualLength(t.prompt))
+		t.setLine(t.line, t.pos)
+	default:
+		if t.AutoCompleteCallback != nil {
+			prefix := string(t.line[:t.pos])
+			suffix := string(t.line[t.pos:])
+
+			t.lock.Unlock()
+			newLine, newPos, completeOk := t.AutoCompleteCallback(prefix+suffix, len(prefix), key)
+			t.lock.Lock()
+
+			if completeOk {
+				t.setLine([]rune(newLine), utf8.RuneCount([]byte(newLine)[:newPos]))
+				return
+			}
+		}
+		if !isPrintable(key) {
+			return
+		}
+		if len(t.line) == maxLineLength {
+			return
+		}
+		t.addKeyToLine(key)
+	}
+	return
+}
+
+// addKeyToLine inserts the given key at the current position in the current
+// line.
+func (t *Terminal) addKeyToLine(key rune) {
+	if len(t.line) == cap(t.line) {
+		newLine := make([]rune, len(t.line), 2*(1+len(t.line)))
+		copy(newLine, t.line)
+		t.line = newLine
+	}
+	t.line = t.line[:len(t.line)+1]
+	copy(t.line[t.pos+1:], t.line[t.pos:])
+	t.line[t.pos] = key
+	if t.echo {
+		t.writeLine(t.line[t.pos:])
+	}
+	t.pos++
+	t.moveCursorToPos(t.pos)
+}
+
+func (t *Terminal) writeLine(line []rune) {
+	for len(line) != 0 {
+		remainingOnLine := t.termWidth - t.cursorX
+		todo := len(line)
+		if todo > remainingOnLine {
+			todo = remainingOnLine
+		}
+		t.queue(line[:todo])
+		t.advanceCursor(visualLength(line[:todo]))
+		line = line[todo:]
+	}
+}
+
+// writeWithCRLF writes buf to w but replaces all occurrences of \n with \r\n.
+func writeWithCRLF(w io.Writer, buf []byte) (n int, err error) {
+	for len(buf) > 0 {
+		i := bytes.IndexByte(buf, '\n')
+		todo := len(buf)
+		if i >= 0 {
+			todo = i
+		}
+
+		var nn int
+		nn, err = w.Write(buf[:todo])
+		n += nn
+		if err != nil {
+			return n, err
+		}
+		buf = buf[todo:]
+
+		if i >= 0 {
+			if _, err = w.Write(crlf); err != nil {
+				return n, err
+			}
+			n++
+			buf = buf[1:]
+		}
+	}
+
+	return n, nil
+}
+
+func (t *Terminal) Write(buf []byte) (n int, err error) {
+	t.lock.Lock()
+	defer t.lock.Unlock()
+
+	if t.cursorX == 0 && t.cursorY == 0 {
+		// This is the easy case: there's nothing on the screen that we
+		// have to move out of the way.
+		return writeWithCRLF(t.c, buf)
+	}
+
+	// We have a prompt and possibly user input on the screen. We
+	// have to clear it first.
+	t.move(0 /* up */, 0 /* down */, t.cursorX /* left */, 0 /* right */)
+	t.cursorX = 0
+	t.clearLineToRight()
+
+	for t.cursorY > 0 {
+		t.move(1 /* up */, 0, 0, 0)
+		t.cursorY--
+		t.clearLineToRight()
+	}
+
+	if _, err = t.c.Write(t.outBuf); err != nil {
+		return
+	}
+	t.outBuf = t.outBuf[:0]
+
+	if n, err = writeWithCRLF(t.c, buf); err != nil {
+		return
+	}
+
+	t.writeLine(t.prompt)
+	if t.echo {
+		t.writeLine(t.line)
+	}
+
+	t.moveCursorToPos(t.pos)
+
+	if _, err = t.c.Write(t.outBuf); err != nil {
+		return
+	}
+	t.outBuf = t.outBuf[:0]
+	return
+}
+
+// ReadPassword temporarily changes the prompt and reads a password, without
+// echo, from the terminal.
+func (t *Terminal) ReadPassword(prompt string) (line string, err error) {
+	t.lock.Lock()
+	defer t.lock.Unlock()
+
+	oldPrompt := t.prompt
+	t.prompt = []rune(prompt)
+	t.echo = false
+
+	line, err = t.readLine()
+
+	t.prompt = oldPrompt
+	t.echo = true
+
+	return
+}
+
+// ReadLine returns a line of input from the terminal.
+func (t *Terminal) ReadLine() (line string, err error) {
+	t.lock.Lock()
+	defer t.lock.Unlock()
+
+	return t.readLine()
+}
+
+func (t *Terminal) readLine() (line string, err error) {
+	// t.lock must be held at this point
+
+	if t.cursorX == 0 && t.cursorY == 0 {
+		t.writeLine(t.prompt)
+		t.c.Write(t.outBuf)
+		t.outBuf = t.outBuf[:0]
+	}
+
+	lineIsPasted := t.pasteActive
+
+	for {
+		rest := t.remainder
+		lineOk := false
+		for !lineOk {
+			var key rune
+			key, rest = bytesToKey(rest, t.pasteActive)
+			if key == utf8.RuneError {
+				break
+			}
+			if !t.pasteActive {
+				if key == keyCtrlD {
+					if len(t.line) == 0 {
+						return "", io.EOF
+					}
+				}
+				if key == keyPasteStart {
+					t.pasteActive = true
+					if len(t.line) == 0 {
+						lineIsPasted = true
+					}
+					continue
+				}
+			} else if key == keyPasteEnd {
+				t.pasteActive = false
+				continue
+			}
+			if !t.pasteActive {
+				lineIsPasted = false
+			}
+			line, lineOk = t.handleKey(key)
+		}
+		if len(rest) > 0 {
+			n := copy(t.inBuf[:], rest)
+			t.remainder = t.inBuf[:n]
+		} else {
+			t.remainder = nil
+		}
+		t.c.Write(t.outBuf)
+		t.outBuf = t.outBuf[:0]
+		if lineOk {
+			if t.echo {
+				t.historyIndex = -1
+				t.history.Add(line)
+			}
+			if lineIsPasted {
+				err = ErrPasteIndicator
+			}
+			return
+		}
+
+		// t.remainder is a slice at the beginning of t.inBuf
+		// containing a partial key sequence
+		readBuf := t.inBuf[len(t.remainder):]
+		var n int
+
+		t.lock.Unlock()
+		n, err = t.c.Read(readBuf)
+		t.lock.Lock()
+
+		if err != nil {
+			return
+		}
+
+		t.remainder = t.inBuf[:n+len(t.remainder)]
+	}
+}
+
+// SetPrompt sets the prompt to be used when reading subsequent lines.
+func (t *Terminal) SetPrompt(prompt string) {
+	t.lock.Lock()
+	defer t.lock.Unlock()
+
+	t.prompt = []rune(prompt)
+}
+
+func (t *Terminal) clearAndRepaintLinePlusNPrevious(numPrevLines int) {
+	// Move cursor to column zero at the start of the line.
+	t.move(t.cursorY, 0, t.cursorX, 0)
+	t.cursorX, t.cursorY = 0, 0
+	t.clearLineToRight()
+	for t.cursorY < numPrevLines {
+		// Move down a line
+		t.move(0, 1, 0, 0)
+		t.cursorY++
+		t.clearLineToRight()
+	}
+	// Move back to beginning.
+	t.move(t.cursorY, 0, 0, 0)
+	t.cursorX, t.cursorY = 0, 0
+
+	t.queue(t.prompt)
+	t.advanceCursor(visualLength(t.prompt))
+	t.writeLine(t.line)
+	t.moveCursorToPos(t.pos)
+}
+
+func (t *Terminal) SetSize(width, height int) error {
+	t.lock.Lock()
+	defer t.lock.Unlock()
+
+	if width == 0 {
+		width = 1
+	}
+
+	oldWidth := t.termWidth
+	t.termWidth, t.termHeight = width, height
+
+	switch {
+	case width == oldWidth:
+		// If the width didn't change then nothing else needs to be
+		// done.
+		return nil
+	case len(t.line) == 0 && t.cursorX == 0 && t.cursorY == 0:
+		// If there is nothing on current line and no prompt printed,
+		// just do nothing
+		return nil
+	case width < oldWidth:
+		// Some terminals (e.g. xterm) will truncate lines that were
+		// too long when shinking. Others, (e.g. gnome-terminal) will
+		// attempt to wrap them. For the former, repainting t.maxLine
+		// works great, but that behaviour goes badly wrong in the case
+		// of the latter because they have doubled every full line.
+
+		// We assume that we are working on a terminal that wraps lines
+		// and adjust the cursor position based on every previous line
+		// wrapping and turning into two. This causes the prompt on
+		// xterms to move upwards, which isn't great, but it avoids a
+		// huge mess with gnome-terminal.
+		if t.cursorX >= t.termWidth {
+			t.cursorX = t.termWidth - 1
+		}
+		t.cursorY *= 2
+		t.clearAndRepaintLinePlusNPrevious(t.maxLine * 2)
+	case width > oldWidth:
+		// If the terminal expands then our position calculations will
+		// be wrong in the future because we think the cursor is
+		// |t.pos| chars into the string, but there will be a gap at
+		// the end of any wrapped line.
+		//
+		// But the position will actually be correct until we move, so
+		// we can move back to the beginning and repaint everything.
+		t.clearAndRepaintLinePlusNPrevious(t.maxLine)
+	}
+
+	_, err := t.c.Write(t.outBuf)
+	t.outBuf = t.outBuf[:0]
+	return err
+}
+
+type pasteIndicatorError struct{}
+
+func (pasteIndicatorError) Error() string {
+	return "terminal: ErrPasteIndicator not correctly handled"
+}
+
+// ErrPasteIndicator may be returned from ReadLine as the error, in addition
+// to valid line data. It indicates that bracketed paste mode is enabled and
+// that the returned line consists only of pasted data. Programs may wish to
+// interpret pasted data more literally than typed data.
+var ErrPasteIndicator = pasteIndicatorError{}
+
+// SetBracketedPasteMode requests that the terminal bracket paste operations
+// with markers. Not all terminals support this but, if it is supported, then
+// enabling this mode will stop any autocomplete callback from running due to
+// pastes. Additionally, any lines that are completely pasted will be returned
+// from ReadLine with the error set to ErrPasteIndicator.
+func (t *Terminal) SetBracketedPasteMode(on bool) {
+	if on {
+		io.WriteString(t.c, "\x1b[?2004h")
+	} else {
+		io.WriteString(t.c, "\x1b[?2004l")
+	}
+}
+
+// stRingBuffer is a ring buffer of strings.
+type stRingBuffer struct {
+	// entries contains max elements.
+	entries []string
+	max     int
+	// head contains the index of the element most recently added to the ring.
+	head int
+	// size contains the number of elements in the ring.
+	size int
+}
+
+func (s *stRingBuffer) Add(a string) {
+	if s.entries == nil {
+		const defaultNumEntries = 100
+		s.entries = make([]string, defaultNumEntries)
+		s.max = defaultNumEntries
+	}
+
+	s.head = (s.head + 1) % s.max
+	s.entries[s.head] = a
+	if s.size < s.max {
+		s.size++
+	}
+}
+
+// NthPreviousEntry returns the value passed to the nth previous call to Add.
+// If n is zero then the immediately prior value is returned, if one, then the
+// next most recent, and so on. If such an element doesn't exist then ok is
+// false.
+func (s *stRingBuffer) NthPreviousEntry(n int) (value string, ok bool) {
+	if n >= s.size {
+		return "", false
+	}
+	index := s.head - n
+	if index < 0 {
+		index += s.max
+	}
+	return s.entries[index], true
+}
+
+// readPasswordLine reads from reader until it finds \n or io.EOF.
+// The slice returned does not include the \n.
+// readPasswordLine also ignores any \r it finds.
+func readPasswordLine(reader io.Reader) ([]byte, error) {
+	var buf [1]byte
+	var ret []byte
+
+	for {
+		n, err := reader.Read(buf[:])
+		if n > 0 {
+			switch buf[0] {
+			case '\n':
+				return ret, nil
+			case '\r':
+				// remove \r from passwords on Windows
+			default:
+				ret = append(ret, buf[0])
+			}
+			continue
+		}
+		if err != nil {
+			if err == io.EOF && len(ret) > 0 {
+				return ret, nil
+			}
+			return ret, err
+		}
+	}
+}

vendor/golang.org/x/crypto/ssh/terminal/util.go

@@ -0,0 +1,114 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build darwin dragonfly freebsd linux,!appengine netbsd openbsd
+
+// Package terminal provides support functions for dealing with terminals, as
+// commonly found on UNIX systems.
+//
+// Putting a terminal into raw mode is the most common requirement:
+//
+// 	oldState, err := terminal.MakeRaw(0)
+// 	if err != nil {
+// 	        panic(err)
+// 	}
+// 	defer terminal.Restore(0, oldState)
+package terminal // import "golang.org/x/crypto/ssh/terminal"
+
+import (
+	"golang.org/x/sys/unix"
+)
+
+// State contains the state of a terminal.
+type State struct {
+	termios unix.Termios
+}
+
+// IsTerminal returns true if the given file descriptor is a terminal.
+func IsTerminal(fd int) bool {
+	_, err := unix.IoctlGetTermios(fd, ioctlReadTermios)
+	return err == nil
+}
+
+// MakeRaw put the terminal connected to the given file descriptor into raw
+// mode and returns the previous state of the terminal so that it can be
+// restored.
+func MakeRaw(fd int) (*State, error) {
+	termios, err := unix.IoctlGetTermios(fd, ioctlReadTermios)
+	if err != nil {
+		return nil, err
+	}
+
+	oldState := State{termios: *termios}
+
+	// This attempts to replicate the behaviour documented for cfmakeraw in
+	// the termios(3) manpage.
+	termios.Iflag &^= unix.IGNBRK | unix.BRKINT | unix.PARMRK | unix.ISTRIP | unix.INLCR | unix.IGNCR | unix.ICRNL | unix.IXON
+	termios.Oflag &^= unix.OPOST
+	termios.Lflag &^= unix.ECHO | unix.ECHONL | unix.ICANON | unix.ISIG | unix.IEXTEN
+	termios.Cflag &^= unix.CSIZE | unix.PARENB
+	termios.Cflag |= unix.CS8
+	termios.Cc[unix.VMIN] = 1
+	termios.Cc[unix.VTIME] = 0
+	if err := unix.IoctlSetTermios(fd, ioctlWriteTermios, termios); err != nil {
+		return nil, err
+	}
+
+	return &oldState, nil
+}
+
+// GetState returns the current state of a terminal which may be useful to
+// restore the terminal after a signal.
+func GetState(fd int) (*State, error) {
+	termios, err := unix.IoctlGetTermios(fd, ioctlReadTermios)
+	if err != nil {
+		return nil, err
+	}
+
+	return &State{termios: *termios}, nil
+}
+
+// Restore restores the terminal connected to the given file descriptor to a
+// previous state.
+func Restore(fd int, state *State) error {
+	return unix.IoctlSetTermios(fd, ioctlWriteTermios, &state.termios)
+}
+
+// GetSize returns the dimensions of the given terminal.
+func GetSize(fd int) (width, height int, err error) {
+	ws, err := unix.IoctlGetWinsize(fd, unix.TIOCGWINSZ)
+	if err != nil {
+		return -1, -1, err
+	}
+	return int(ws.Col), int(ws.Row), nil
+}
+
+// passwordReader is an io.Reader that reads from a specific file descriptor.
+type passwordReader int
+
+func (r passwordReader) Read(buf []byte) (int, error) {
+	return unix.Read(int(r), buf)
+}
+
+// ReadPassword reads a line of input from a terminal without local echo.  This
+// is commonly used for inputting passwords and other sensitive data. The slice
+// returned does not include the \n.
+func ReadPassword(fd int) ([]byte, error) {
+	termios, err := unix.IoctlGetTermios(fd, ioctlReadTermios)
+	if err != nil {
+		return nil, err
+	}
+
+	newState := *termios
+	newState.Lflag &^= unix.ECHO
+	newState.Lflag |= unix.ICANON | unix.ISIG
+	newState.Iflag |= unix.ICRNL
+	if err := unix.IoctlSetTermios(fd, ioctlWriteTermios, &newState); err != nil {
+		return nil, err
+	}
+
+	defer unix.IoctlSetTermios(fd, ioctlWriteTermios, termios)
+
+	return readPasswordLine(passwordReader(fd))
+}

vendor/golang.org/x/crypto/ssh/terminal/util_bsd.go

@@ -0,0 +1,12 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build darwin dragonfly freebsd netbsd openbsd
+
+package terminal
+
+import "golang.org/x/sys/unix"
+
+const ioctlReadTermios = unix.TIOCGETA
+const ioctlWriteTermios = unix.TIOCSETA

vendor/golang.org/x/crypto/ssh/terminal/util_linux.go

@@ -0,0 +1,10 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package terminal
+
+import "golang.org/x/sys/unix"
+
+const ioctlReadTermios = unix.TCGETS
+const ioctlWriteTermios = unix.TCSETS

vendor/golang.org/x/crypto/ssh/terminal/util_plan9.go

@@ -0,0 +1,58 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package terminal provides support functions for dealing with terminals, as
+// commonly found on UNIX systems.
+//
+// Putting a terminal into raw mode is the most common requirement:
+//
+// 	oldState, err := terminal.MakeRaw(0)
+// 	if err != nil {
+// 	        panic(err)
+// 	}
+// 	defer terminal.Restore(0, oldState)
+package terminal
+
+import (
+	"fmt"
+	"runtime"
+)
+
+type State struct{}
+
+// IsTerminal returns true if the given file descriptor is a terminal.
+func IsTerminal(fd int) bool {
+	return false
+}
+
+// MakeRaw put the terminal connected to the given file descriptor into raw
+// mode and returns the previous state of the terminal so that it can be
+// restored.
+func MakeRaw(fd int) (*State, error) {
+	return nil, fmt.Errorf("terminal: MakeRaw not implemented on %s/%s", runtime.GOOS, runtime.GOARCH)
+}
+
+// GetState returns the current state of a terminal which may be useful to
+// restore the terminal after a signal.
+func GetState(fd int) (*State, error) {
+	return nil, fmt.Errorf("terminal: GetState not implemented on %s/%s", runtime.GOOS, runtime.GOARCH)
+}
+
+// Restore restores the terminal connected to the given file descriptor to a
+// previous state.
+func Restore(fd int, state *State) error {
+	return fmt.Errorf("terminal: Restore not implemented on %s/%s", runtime.GOOS, runtime.GOARCH)
+}
+
+// GetSize returns the dimensions of the given terminal.
+func GetSize(fd int) (width, height int, err error) {
+	return 0, 0, fmt.Errorf("terminal: GetSize not implemented on %s/%s", runtime.GOOS, runtime.GOARCH)
+}
+
+// ReadPassword reads a line of input from a terminal without local echo.  This
+// is commonly used for inputting passwords and other sensitive data. The slice
+// returned does not include the \n.
+func ReadPassword(fd int) ([]byte, error) {
+	return nil, fmt.Errorf("terminal: ReadPassword not implemented on %s/%s", runtime.GOOS, runtime.GOARCH)
+}

vendor/golang.org/x/crypto/ssh/terminal/util_solaris.go

@@ -0,0 +1,124 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build solaris
+
+package terminal // import "golang.org/x/crypto/ssh/terminal"
+
+import (
+	"golang.org/x/sys/unix"
+	"io"
+	"syscall"
+)
+
+// State contains the state of a terminal.
+type State struct {
+	termios unix.Termios
+}
+
+// IsTerminal returns true if the given file descriptor is a terminal.
+func IsTerminal(fd int) bool {
+	_, err := unix.IoctlGetTermio(fd, unix.TCGETA)
+	return err == nil
+}
+
+// ReadPassword reads a line of input from a terminal without local echo.  This
+// is commonly used for inputting passwords and other sensitive data. The slice
+// returned does not include the \n.
+func ReadPassword(fd int) ([]byte, error) {
+	// see also: http://src.illumos.org/source/xref/illumos-gate/usr/src/lib/libast/common/uwin/getpass.c
+	val, err := unix.IoctlGetTermios(fd, unix.TCGETS)
+	if err != nil {
+		return nil, err
+	}
+	oldState := *val
+
+	newState := oldState
+	newState.Lflag &^= syscall.ECHO
+	newState.Lflag |= syscall.ICANON | syscall.ISIG
+	newState.Iflag |= syscall.ICRNL
+	err = unix.IoctlSetTermios(fd, unix.TCSETS, &newState)
+	if err != nil {
+		return nil, err
+	}
+
+	defer unix.IoctlSetTermios(fd, unix.TCSETS, &oldState)
+
+	var buf [16]byte
+	var ret []byte
+	for {
+		n, err := syscall.Read(fd, buf[:])
+		if err != nil {
+			return nil, err
+		}
+		if n == 0 {
+			if len(ret) == 0 {
+				return nil, io.EOF
+			}
+			break
+		}
+		if buf[n-1] == '\n' {
+			n--
+		}
+		ret = append(ret, buf[:n]...)
+		if n < len(buf) {
+			break
+		}
+	}
+
+	return ret, nil
+}
+
+// MakeRaw puts the terminal connected to the given file descriptor into raw
+// mode and returns the previous state of the terminal so that it can be
+// restored.
+// see http://cr.illumos.org/~webrev/andy_js/1060/
+func MakeRaw(fd int) (*State, error) {
+	termios, err := unix.IoctlGetTermios(fd, unix.TCGETS)
+	if err != nil {
+		return nil, err
+	}
+
+	oldState := State{termios: *termios}
+
+	termios.Iflag &^= unix.IGNBRK | unix.BRKINT | unix.PARMRK | unix.ISTRIP | unix.INLCR | unix.IGNCR | unix.ICRNL | unix.IXON
+	termios.Oflag &^= unix.OPOST
+	termios.Lflag &^= unix.ECHO | unix.ECHONL | unix.ICANON | unix.ISIG | unix.IEXTEN
+	termios.Cflag &^= unix.CSIZE | unix.PARENB
+	termios.Cflag |= unix.CS8
+	termios.Cc[unix.VMIN] = 1
+	termios.Cc[unix.VTIME] = 0
+
+	if err := unix.IoctlSetTermios(fd, unix.TCSETS, termios); err != nil {
+		return nil, err
+	}
+
+	return &oldState, nil
+}
+
+// Restore restores the terminal connected to the given file descriptor to a
+// previous state.
+func Restore(fd int, oldState *State) error {
+	return unix.IoctlSetTermios(fd, unix.TCSETS, &oldState.termios)
+}
+
+// GetState returns the current state of a terminal which may be useful to
+// restore the terminal after a signal.
+func GetState(fd int) (*State, error) {
+	termios, err := unix.IoctlGetTermios(fd, unix.TCGETS)
+	if err != nil {
+		return nil, err
+	}
+
+	return &State{termios: *termios}, nil
+}
+
+// GetSize returns the dimensions of the given terminal.
+func GetSize(fd int) (width, height int, err error) {
+	ws, err := unix.IoctlGetWinsize(fd, unix.TIOCGWINSZ)
+	if err != nil {
+		return 0, 0, err
+	}
+	return int(ws.Col), int(ws.Row), nil
+}

vendor/golang.org/x/crypto/ssh/terminal/util_windows.go

@@ -0,0 +1,103 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build windows
+
+// Package terminal provides support functions for dealing with terminals, as
+// commonly found on UNIX systems.
+//
+// Putting a terminal into raw mode is the most common requirement:
+//
+// 	oldState, err := terminal.MakeRaw(0)
+// 	if err != nil {
+// 	        panic(err)
+// 	}
+// 	defer terminal.Restore(0, oldState)
+package terminal
+
+import (
+	"os"
+
+	"golang.org/x/sys/windows"
+)
+
+type State struct {
+	mode uint32
+}
+
+// IsTerminal returns true if the given file descriptor is a terminal.
+func IsTerminal(fd int) bool {
+	var st uint32
+	err := windows.GetConsoleMode(windows.Handle(fd), &st)
+	return err == nil
+}
+
+// MakeRaw put the terminal connected to the given file descriptor into raw
+// mode and returns the previous state of the terminal so that it can be
+// restored.
+func MakeRaw(fd int) (*State, error) {
+	var st uint32
+	if err := windows.GetConsoleMode(windows.Handle(fd), &st); err != nil {
+		return nil, err
+	}
+	raw := st &^ (windows.ENABLE_ECHO_INPUT | windows.ENABLE_PROCESSED_INPUT | windows.ENABLE_LINE_INPUT | windows.ENABLE_PROCESSED_OUTPUT)
+	if err := windows.SetConsoleMode(windows.Handle(fd), raw); err != nil {
+		return nil, err
+	}
+	return &State{st}, nil
+}
+
+// GetState returns the current state of a terminal which may be useful to
+// restore the terminal after a signal.
+func GetState(fd int) (*State, error) {
+	var st uint32
+	if err := windows.GetConsoleMode(windows.Handle(fd), &st); err != nil {
+		return nil, err
+	}
+	return &State{st}, nil
+}
+
+// Restore restores the terminal connected to the given file descriptor to a
+// previous state.
+func Restore(fd int, state *State) error {
+	return windows.SetConsoleMode(windows.Handle(fd), state.mode)
+}
+
+// GetSize returns the dimensions of the given terminal.
+func GetSize(fd int) (width, height int, err error) {
+	var info windows.ConsoleScreenBufferInfo
+	if err := windows.GetConsoleScreenBufferInfo(windows.Handle(fd), &info); err != nil {
+		return 0, 0, err
+	}
+	return int(info.Size.X), int(info.Size.Y), nil
+}
+
+// ReadPassword reads a line of input from a terminal without local echo.  This
+// is commonly used for inputting passwords and other sensitive data. The slice
+// returned does not include the \n.
+func ReadPassword(fd int) ([]byte, error) {
+	var st uint32
+	if err := windows.GetConsoleMode(windows.Handle(fd), &st); err != nil {
+		return nil, err
+	}
+	old := st
+
+	st &^= (windows.ENABLE_ECHO_INPUT)
+	st |= (windows.ENABLE_PROCESSED_INPUT | windows.ENABLE_LINE_INPUT | windows.ENABLE_PROCESSED_OUTPUT)
+	if err := windows.SetConsoleMode(windows.Handle(fd), st); err != nil {
+		return nil, err
+	}
+
+	defer windows.SetConsoleMode(windows.Handle(fd), old)
+
+	var h windows.Handle
+	p, _ := windows.GetCurrentProcess()
+	if err := windows.DuplicateHandle(p, windows.Handle(fd), p, &h, 0, false, windows.DUPLICATE_SAME_ACCESS); err != nil {
+		return nil, err
+	}
+
+	f := os.NewFile(uintptr(h), "stdin")
+	defer f.Close()
+	return readPasswordLine(f)
+}