Merge pull request #1600 from rhatdan/vendor

Vendor in latest github.com/containers/storage,image, buildah

18 files changed, 289 insertions, 96 deletions

diff --git a/vendor.conf b/vendor.conf
index ccad28c0b..b526c1560 100644
--- a/vendor.conf
+++ b/vendor.conf
@@ -10,8 +10,8 @@ github.com/containerd/cgroups 58556f5ad8448d99a6f7bea69ea4bdb7747cfeb0
 github.com/containerd/continuity master
 github.com/containernetworking/cni v0.7.0-alpha1
 github.com/containernetworking/plugins 1562a1e60ed101aacc5e08ed9dbeba8e9f3d4ec1
-github.com/containers/image 8f11f3ad8912d8bc43a7d25992b8f313ffefd430
-github.com/containers/storage 68332c059156eae970a03245cfcd4d717fb66ecd
+github.com/containers/image 7a1eac5d1df2dbd73d8b71853ebce32d989fcae3
+github.com/containers/storage 41294c85d97bef688e18f710402895dbecde3308
 github.com/containers/psgo 5dde6da0bc8831b35243a847625bcf18183bd1ee
 github.com/coreos/go-systemd v14
 github.com/cri-o/ocicni master
@@ -90,7 +90,7 @@ k8s.io/kube-openapi 275e2ce91dec4c05a4094a7b1daee5560b555ac9 https://github.com/
 k8s.io/utils 258e2a2fa64568210fbd6267cf1d8fd87c3cb86e https://github.com/kubernetes/utils
 github.com/mrunalp/fileutils master
 github.com/varlink/go master
-github.com/containers/buildah cf87f0947ef719872816cc5d6a5ba4db1c261365
+github.com/containers/buildah af8cb28f84d81ee1bca04c893142cd790b908c75
 github.com/Nvveen/Gotty master
 github.com/fsouza/go-dockerclient master
 github.com/openshift/imagebuilder master
diff --git a/vendor/github.com/containers/buildah/README.md b/vendor/github.com/containers/buildah/README.md
index fa4a58fd9..6a79e524b 100644
--- a/vendor/github.com/containers/buildah/README.md
+++ b/vendor/github.com/containers/buildah/README.md
@@ -17,6 +17,8 @@ The Buildah package provides a command line tool that can be used to
 
 ## Buildah Information for Developers
 
+For blogs, release announcements and more, please checkout the [buildah.io](https://buildah.io) website!
+
 **[Buildah Demos](demos)**
 
 **[Changelog](CHANGELOG.md)**
diff --git a/vendor/github.com/containers/buildah/buildah.go b/vendor/github.com/containers/buildah/buildah.go
index 7891810a2..79704d7b1 100644
--- a/vendor/github.com/containers/buildah/buildah.go
+++ b/vendor/github.com/containers/buildah/buildah.go
@@ -24,7 +24,7 @@ const (
 	Package = "buildah"
 	// Version for the Package.  Bump version in contrib/rpm/buildah.spec
 	// too.
-	Version = "1.4-dev"
+	Version = "1.5-dev"
 	// The value we use to identify what type of information, currently a
 	// serialized Builder structure, we are using as per-container state.
 	// This should only be changed when we make incompatible changes to
diff --git a/vendor/github.com/containers/buildah/chroot/run.go b/vendor/github.com/containers/buildah/chroot/run.go
index 58b7a883c..51e2d2bd4 100644
--- a/vendor/github.com/containers/buildah/chroot/run.go
+++ b/vendor/github.com/containers/buildah/chroot/run.go
@@ -100,18 +100,6 @@ func RunUsingChroot(spec *specs.Spec, bundlePath string, stdin io.Reader, stdout
 	}
 	logrus.Debugf("config = %v", string(specbytes))
 
-	// Run the grandparent subprocess in a user namespace that reuses the mappings that we have.
-	uidmap, gidmap, err := util.GetHostIDMappings("")
-	if err != nil {
-		return err
-	}
-	for i := range uidmap {
-		uidmap[i].HostID = uidmap[i].ContainerID
-	}
-	for i := range gidmap {
-		gidmap[i].HostID = gidmap[i].ContainerID
-	}
-
 	// Default to using stdin/stdout/stderr if we weren't passed objects to use.
 	if stdin == nil {
 		stdin = os.Stdin
@@ -162,10 +150,6 @@ func RunUsingChroot(spec *specs.Spec, bundlePath string, stdin io.Reader, stdout
 	cmd.Stdin, cmd.Stdout, cmd.Stderr = stdin, stdout, stderr
 	cmd.Dir = "/"
 	cmd.Env = append([]string{fmt.Sprintf("LOGLEVEL=%d", logrus.GetLevel())}, os.Environ()...)
-	cmd.UnshareFlags = syscall.CLONE_NEWUSER
-	cmd.UidMappings = uidmap
-	cmd.GidMappings = gidmap
-	cmd.GidMappingsEnableSetgroups = true
 
 	logrus.Debugf("Running %#v in %#v", cmd.Cmd, cmd)
 	confwg.Add(1)
@@ -568,10 +552,19 @@ func runUsingChroot(spec *specs.Spec, bundlePath string, ctty *os.File, stdin io
 	cmd.Stdin, cmd.Stdout, cmd.Stderr = stdin, stdout, stderr
 	cmd.Dir = "/"
 	cmd.Env = append([]string{fmt.Sprintf("LOGLEVEL=%d", logrus.GetLevel())}, os.Environ()...)
-	cmd.UnshareFlags = syscall.CLONE_NEWUSER | syscall.CLONE_NEWUTS | syscall.CLONE_NEWNS
-	cmd.UidMappings = uidmap
-	cmd.GidMappings = gidmap
-	cmd.GidMappingsEnableSetgroups = true
+	cmd.UnshareFlags = syscall.CLONE_NEWUTS | syscall.CLONE_NEWNS
+	requestedUserNS := false
+	for _, ns := range spec.Linux.Namespaces {
+		if ns.Type == specs.LinuxNamespaceType(specs.UserNamespace) {
+			requestedUserNS = true
+		}
+	}
+	if len(spec.Linux.UIDMappings) > 0 || len(spec.Linux.GIDMappings) > 0 || requestedUserNS {
+		cmd.UnshareFlags = cmd.UnshareFlags | syscall.CLONE_NEWUSER
+		cmd.UidMappings = uidmap
+		cmd.GidMappings = gidmap
+		cmd.GidMappingsEnableSetgroups = true
+	}
 	if ctty != nil {
 		cmd.Setsid = true
 		cmd.Ctty = ctty
@@ -697,15 +690,7 @@ func runUsingChrootExecMain() {
 		fmt.Fprintf(os.Stderr, "error setting SELinux label for process: %v\n", err)
 		os.Exit(1)
 	}
-	logrus.Debugf("setting capabilities")
-	if err := setCapabilities(options.Spec); err != nil {
-		fmt.Fprintf(os.Stderr, "error setting capabilities for process %v\n", err)
-		os.Exit(1)
-	}
-	if err = setSeccomp(options.Spec); err != nil {
-		fmt.Fprintf(os.Stderr, "error setting seccomp filter for process: %v\n", err)
-		os.Exit(1)
-	}
+
 	logrus.Debugf("setting resource limits")
 	if err = setRlimits(options.Spec, false, false); err != nil {
 		fmt.Fprintf(os.Stderr, "error setting process resource limits for process: %v\n", err)
@@ -747,11 +732,28 @@ func runUsingChrootExecMain() {
 			os.Exit(1)
 		}
 	}
+
 	logrus.Debugf("setting gid")
 	if err = syscall.Setresgid(int(user.GID), int(user.GID), int(user.GID)); err != nil {
 		fmt.Fprintf(os.Stderr, "error setting GID: %v", err)
 		os.Exit(1)
 	}
+
+	if err = setSeccomp(options.Spec); err != nil {
+		fmt.Fprintf(os.Stderr, "error setting seccomp filter for process: %v\n", err)
+		os.Exit(1)
+	}
+
+	logrus.Debugf("setting capabilities")
+	var keepCaps []string
+	if user.UID != 0 {
+		keepCaps = []string{"CAP_SETUID"}
+	}
+	if err := setCapabilities(options.Spec, keepCaps...); err != nil {
+		fmt.Fprintf(os.Stderr, "error setting capabilities for process: %v\n", err)
+		os.Exit(1)
+	}
+
 	logrus.Debugf("setting uid")
 	if err = syscall.Setresuid(int(user.UID), int(user.UID), int(user.UID)); err != nil {
 		fmt.Fprintf(os.Stderr, "error setting UID: %v", err)
@@ -855,7 +857,11 @@ func setApparmorProfile(spec *specs.Spec) error {
 }
 
 // setCapabilities sets capabilities for ourselves, to be more or less inherited by any processes that we'll start.
-func setCapabilities(spec *specs.Spec) error {
+func setCapabilities(spec *specs.Spec, keepCaps ...string) error {
+	currentCaps, err := capability.NewPid(0)
+	if err != nil {
+		return errors.Wrapf(err, "error reading capabilities of current process")
+	}
 	caps, err := capability.NewPid(0)
 	if err != nil {
 		return errors.Wrapf(err, "error reading capabilities of current process")
@@ -868,8 +874,8 @@ func setCapabilities(spec *specs.Spec) error {
 		capability.AMBIENT:     spec.Process.Capabilities.Ambient,
 	}
 	knownCaps := capability.List()
+	caps.Clear(capability.CAPS | capability.BOUNDS | capability.AMBS)
 	for capType, capList := range capMap {
-		caps.Clear(capType)
 		for _, capToSet := range capList {
 			cap := capability.CAP_LAST_CAP
 			for _, c := range knownCaps {
@@ -883,12 +889,25 @@ func setCapabilities(spec *specs.Spec) error {
 			}
 			caps.Set(capType, cap)
 		}
-	}
-	for capType := range capMap {
-		if err = caps.Apply(capType); err != nil {
-			return errors.Wrapf(err, "error setting %s capabilities to %#v", capType.String(), capMap[capType])
+		for _, capToSet := range keepCaps {
+			cap := capability.CAP_LAST_CAP
+			for _, c := range knownCaps {
+				if strings.EqualFold("CAP_"+c.String(), capToSet) {
+					cap = c
+					break
+				}
+			}
+			if cap == capability.CAP_LAST_CAP {
+				return errors.Errorf("error mapping capability %q to a number", capToSet)
+			}
+			if currentCaps.Get(capType, cap) {
+				caps.Set(capType, cap)
+			}
 		}
 	}
+	if err = caps.Apply(capability.CAPS | capability.BOUNDS | capability.AMBS); err != nil {
+		return errors.Wrapf(err, "error setting capabilities")
+	}
 	return nil
 }
 
diff --git a/vendor/github.com/containers/buildah/commit.go b/vendor/github.com/containers/buildah/commit.go
index f89930399..c07a5881b 100644
--- a/vendor/github.com/containers/buildah/commit.go
+++ b/vendor/github.com/containers/buildah/commit.go
@@ -92,6 +92,15 @@ func (b *Builder) Commit(ctx context.Context, dest types.ImageReference, options
 	var imgID string
 
 	systemContext := getSystemContext(options.SystemContext, options.SignaturePolicyPath)
+
+	blocked, err := isReferenceBlocked(dest, systemContext)
+	if err != nil {
+		return "", errors.Wrapf(err, "error checking if committing to registry for %q is blocked", transports.ImageName(dest))
+	}
+	if blocked {
+		return "", errors.Errorf("commit access to registry for %q is blocked by configuration", transports.ImageName(dest))
+	}
+
 	policy, err := signature.DefaultPolicy(systemContext)
 	if err != nil {
 		return imgID, errors.Wrapf(err, "error obtaining default signature policy")
@@ -120,7 +129,7 @@ func (b *Builder) Commit(ctx context.Context, dest types.ImageReference, options
 		return imgID, errors.Wrapf(err, "error computing layer digests and building metadata")
 	}
 	// "Copy" our image to where it needs to be.
-	err = cp.Image(ctx, policyContext, dest, src, getCopyOptions(options.ReportWriter, nil, systemContext, ""))
+	err = cp.Image(ctx, policyContext, dest, src, getCopyOptions(options.ReportWriter, src, nil, dest, systemContext, ""))
 	if err != nil {
 		return imgID, errors.Wrapf(err, "error copying layers and metadata")
 	}
@@ -162,6 +171,15 @@ func (b *Builder) Commit(ctx context.Context, dest types.ImageReference, options
 // Push copies the contents of the image to a new location.
 func Push(ctx context.Context, image string, dest types.ImageReference, options PushOptions) error {
 	systemContext := getSystemContext(options.SystemContext, options.SignaturePolicyPath)
+
+	blocked, err := isReferenceBlocked(dest, systemContext)
+	if err != nil {
+		return errors.Wrapf(err, "error checking if pushing to registry for %q is blocked", transports.ImageName(dest))
+	}
+	if blocked {
+		return errors.Errorf("push access to registry for %q is blocked by configuration", transports.ImageName(dest))
+	}
+
 	policy, err := signature.DefaultPolicy(systemContext)
 	if err != nil {
 		return errors.Wrapf(err, "error obtaining default signature policy")
@@ -176,7 +194,7 @@ func Push(ctx context.Context, image string, dest types.ImageReference, options
 		return err
 	}
 	// Copy everything.
-	err = cp.Image(ctx, policyContext, dest, src, getCopyOptions(options.ReportWriter, nil, systemContext, options.ManifestType))
+	err = cp.Image(ctx, policyContext, dest, src, getCopyOptions(options.ReportWriter, src, nil, dest, systemContext, options.ManifestType))
 	if err != nil {
 		return errors.Wrapf(err, "error copying layers and metadata")
 	}
diff --git a/vendor/github.com/containers/buildah/common.go b/vendor/github.com/containers/buildah/common.go
index dcf922dc9..56a901925 100644
--- a/vendor/github.com/containers/buildah/common.go
+++ b/vendor/github.com/containers/buildah/common.go
@@ -3,7 +3,10 @@ package buildah
 import (
 	"io"
 
+	"github.com/sirupsen/logrus"
+
 	cp "github.com/containers/image/copy"
+	"github.com/containers/image/transports"
 	"github.com/containers/image/types"
 )
 
@@ -14,11 +17,35 @@ const (
 	DOCKER = "docker"
 )
 
-func getCopyOptions(reportWriter io.Writer, sourceSystemContext *types.SystemContext, destinationSystemContext *types.SystemContext, manifestType string) *cp.Options {
+func getCopyOptions(reportWriter io.Writer, sourceReference types.ImageReference, sourceSystemContext *types.SystemContext, destinationReference types.ImageReference, destinationSystemContext *types.SystemContext, manifestType string) *cp.Options {
+	sourceCtx := &types.SystemContext{}
+	if sourceSystemContext != nil {
+		*sourceCtx = *sourceSystemContext
+	}
+	sourceInsecure, err := isReferenceInsecure(sourceReference, sourceCtx)
+	if err != nil {
+		logrus.Debugf("error determining if registry for %q is insecure: %v", transports.ImageName(sourceReference), err)
+	} else if sourceInsecure {
+		sourceCtx.DockerInsecureSkipTLSVerify = true
+		sourceCtx.OCIInsecureSkipTLSVerify = true
+	}
+
+	destinationCtx := &types.SystemContext{}
+	if destinationSystemContext != nil {
+		*destinationCtx = *destinationSystemContext
+	}
+	destinationInsecure, err := isReferenceInsecure(destinationReference, destinationCtx)
+	if err != nil {
+		logrus.Debugf("error determining if registry for %q is insecure: %v", transports.ImageName(destinationReference), err)
+	} else if destinationInsecure {
+		destinationCtx.DockerInsecureSkipTLSVerify = true
+		destinationCtx.OCIInsecureSkipTLSVerify = true
+	}
+
 	return &cp.Options{
 		ReportWriter:          reportWriter,
-		SourceCtx:             sourceSystemContext,
-		DestinationCtx:        destinationSystemContext,
+		SourceCtx:             sourceCtx,
+		DestinationCtx:        destinationCtx,
 		ForceManifestMIMEType: manifestType,
 	}
 }
diff --git a/vendor/github.com/containers/buildah/imagebuildah/build.go b/vendor/github.com/containers/buildah/imagebuildah/build.go
index 9b4c6f635..727e41c38 100644
--- a/vendor/github.com/containers/buildah/imagebuildah/build.go
+++ b/vendor/github.com/containers/buildah/imagebuildah/build.go
@@ -325,6 +325,9 @@ func (b *Executor) Preserve(path string) error {
 		archivedPath := filepath.Join(b.mountPoint, cachedPath)
 		logrus.Debugf("no longer need cache of %q in %q", archivedPath, b.volumeCache[cachedPath])
 		if err := os.Remove(b.volumeCache[cachedPath]); err != nil {
+			if os.IsNotExist(err) {
+				continue
+			}
 			return errors.Wrapf(err, "error removing %q", b.volumeCache[cachedPath])
 		}
 		delete(b.volumeCache, cachedPath)
@@ -343,6 +346,9 @@ func (b *Executor) volumeCacheInvalidate(path string) error {
 	}
 	for _, cachedPath := range invalidated {
 		if err := os.Remove(b.volumeCache[cachedPath]); err != nil {
+			if os.IsNotExist(err) {
+				continue
+			}
 			return errors.Wrapf(err, "error removing volume cache %q", b.volumeCache[cachedPath])
 		}
 		archivedPath := filepath.Join(b.mountPoint, cachedPath)
@@ -1125,6 +1131,7 @@ func (b *Executor) Commit(ctx context.Context, ib *imagebuilder.Builder, created
 		AdditionalTags:        b.additionalTags,
 		ReportWriter:          writer,
 		PreferredManifestType: b.outputFormat,
+		SystemContext:         b.systemContext,
 		IIDFile:               b.iidfile,
 		Squash:                b.squash,
 		Parent:                b.builder.FromImageID,
diff --git a/vendor/github.com/containers/buildah/new.go b/vendor/github.com/containers/buildah/new.go
index b0b655da9..3b94459e7 100644
--- a/vendor/github.com/containers/buildah/new.go
+++ b/vendor/github.com/containers/buildah/new.go
@@ -3,7 +3,6 @@ package buildah
 import (
 	"context"
 	"fmt"
-	"os"
 	"strings"
 
 	"github.com/containers/buildah/util"
@@ -14,7 +13,6 @@ import (
 	"github.com/containers/image/types"
 	"github.com/containers/storage"
 	multierror "github.com/hashicorp/go-multierror"
-	"github.com/opencontainers/selinux/go-selinux"
 	"github.com/opencontainers/selinux/go-selinux/label"
 	"github.com/openshift/imagebuilder"
 	"github.com/pkg/errors"
@@ -36,36 +34,6 @@ const (
 	minimumTruncatedIDLength = 3
 )
 
-func reserveSELinuxLabels(store storage.Store, id string) error {
-	if selinux.GetEnabled() {
-		containers, err := store.Containers()
-		if err != nil {
-			return err
-		}
-
-		for _, c := range containers {
-			if id == c.ID {
-				continue
-			} else {
-				b, err := OpenBuilder(store, c.ID)
-				if err != nil {
-					if os.IsNotExist(err) {
-						// Ignore not exist errors since containers probably created by other tool
-						// TODO, we need to read other containers json data to reserve their SELinux labels
-						continue
-					}
-					return err
-				}
-				// Prevent different containers from using same MCS label
-				if err := label.ReserveLabel(b.ProcessLabel); err != nil {
-					return err
-				}
-			}
-		}
-	}
-	return nil
-}
-
 func pullAndFindImage(ctx context.Context, store storage.Store, imageName string, options BuilderOptions, sc *types.SystemContext) (*storage.Image, types.ImageReference, error) {
 	pullOptions := PullOptions{
 		ReportWriter:  options.ReportWriter,
@@ -303,7 +271,7 @@ func newBuilder(ctx context.Context, store storage.Store, options BuilderOptions
 		}
 	}()
 
-	if err = reserveSELinuxLabels(store, container.ID); err != nil {
+	if err = ReserveSELinuxLabels(store, container.ID); err != nil {
 		return nil, err
 	}
 	processLabel, mountLabel, err := label.InitLabels(options.CommonBuildOpts.LabelOpts)
diff --git a/vendor/github.com/containers/buildah/pkg/cli/common.go b/vendor/github.com/containers/buildah/pkg/cli/common.go
index 94b92e1eb..b54663f5d 100644
--- a/vendor/github.com/containers/buildah/pkg/cli/common.go
+++ b/vendor/github.com/containers/buildah/pkg/cli/common.go
@@ -128,11 +128,6 @@ var (
 			Name:  "iidfile",
 			Usage: "`file` to write the image ID to",
 		},
-		cli.StringFlag{
-			Name:  "isolation",
-			Usage: "`type` of process isolation to use. Use BUILDAH_ISOLATION environment variable to override.",
-			Value: DefaultIsolation(),
-		},
 		cli.StringSliceFlag{
 			Name:  "label",
 			Usage: "Set metadata for an image (default [])",
@@ -230,6 +225,11 @@ var (
 			Usage: "memory nodes (MEMs) in which to allow execution (0-3, 0,1). Only effective on NUMA systems.",
 		},
 		cli.StringFlag{
+			Name:  "isolation",
+			Usage: "`type` of process isolation to use. Use BUILDAH_ISOLATION environment variable to override.",
+			Value: DefaultIsolation(),
+		},
+		cli.StringFlag{
 			Name:  "memory, m",
 			Usage: "memory limit (format: <number>[<unit>], where unit = b, k, m or g)",
 		},
diff --git a/vendor/github.com/containers/buildah/pkg/parse/parse.go b/vendor/github.com/containers/buildah/pkg/parse/parse.go
index d206508b4..1f13cfdee 100644
--- a/vendor/github.com/containers/buildah/pkg/parse/parse.go
+++ b/vendor/github.com/containers/buildah/pkg/parse/parse.go
@@ -283,6 +283,8 @@ func SystemContextFromOptions(c *cli.Context) (*types.SystemContext, error) {
 	}
 	if c.IsSet("tls-verify") {
 		ctx.DockerInsecureSkipTLSVerify = !c.BoolT("tls-verify")
+		ctx.OCIInsecureSkipTLSVerify = !c.BoolT("tls-verify")
+		ctx.DockerDaemonInsecureSkipTLSVerify = !c.BoolT("tls-verify")
 	}
 	if c.IsSet("creds") {
 		var err error
diff --git a/vendor/github.com/containers/buildah/pull.go b/vendor/github.com/containers/buildah/pull.go
index c2fc6637f..b7a106b2f 100644
--- a/vendor/github.com/containers/buildah/pull.go
+++ b/vendor/github.com/containers/buildah/pull.go
@@ -160,6 +160,14 @@ func pullImage(ctx context.Context, store storage.Store, imageName string, optio
 		srcRef = srcRef2
 	}
 
+	blocked, err := isReferenceBlocked(srcRef, sc)
+	if err != nil {
+		return nil, errors.Wrapf(err, "error checking if pulling from registry for %q is blocked", transports.ImageName(srcRef))
+	}
+	if blocked {
+		return nil, errors.Errorf("pull access to registry for %q is blocked by configuration", transports.ImageName(srcRef))
+	}
+
 	destName, err := localImageNameForReference(ctx, store, srcRef, spec)
 	if err != nil {
 		return nil, errors.Wrapf(err, "error computing local image name for %q", transports.ImageName(srcRef))
@@ -190,7 +198,7 @@ func pullImage(ctx context.Context, store storage.Store, imageName string, optio
 	}()
 
 	logrus.Debugf("copying %q to %q", spec, destName)
-	pullError := cp.Image(ctx, policyContext, destRef, srcRef, getCopyOptions(options.ReportWriter, sc, nil, ""))
+	pullError := cp.Image(ctx, policyContext, destRef, srcRef, getCopyOptions(options.ReportWriter, srcRef, sc, destRef, nil, ""))
 	if pullError == nil {
 		return destRef, nil
 	}
diff --git a/vendor/github.com/containers/buildah/unshare/unshare.c b/vendor/github.com/containers/buildah/unshare/unshare.c
index 47d775c73..ae4185ea4 100644
--- a/vendor/github.com/containers/buildah/unshare/unshare.c
+++ b/vendor/github.com/containers/buildah/unshare/unshare.c
@@ -11,6 +11,8 @@
 #include <termios.h>
 #include <unistd.h>
 
+const char *_max_user_namespaces = "/proc/sys/user/max_user_namespaces";
+
 static int _buildah_unshare_parse_envint(const char *envname) {
 	char *p, *q;
 	long l;
@@ -31,7 +33,10 @@ static int _buildah_unshare_parse_envint(const char *envname) {
 
 void _buildah_unshare(void)
 {
+	FILE *fp;
 	int flags, pidfd, continuefd, n, pgrp, sid, ctty;
+	long max_userns;
+	size_t n_read;
 	char buf[2048];
 
 	flags = _buildah_unshare_parse_envint("_Buildah-unshare");
@@ -41,6 +46,22 @@ void _buildah_unshare(void)
 	if ((flags & CLONE_NEWUSER) != 0) {
 		if (unshare(CLONE_NEWUSER) == -1) {
 			fprintf(stderr, "Error during unshare(CLONE_NEWUSER): %m\n");
+			fp = fopen(_max_user_namespaces, "r");
+			if (fp != NULL) {
+				memset(buf, 0, sizeof(buf));
+				n_read = fread(buf, 1, sizeof(buf) - 1, fp);
+				if (n_read > 0) {
+					max_userns = atoi(buf);
+					if (max_userns == 0) {
+						fprintf(stderr, "User namespaces are not enabled in %s.\n", _max_user_namespaces);
+					}
+				} else {
+					fprintf(stderr, "Error reading %s: no contents, should contain a number greater than 0.\n", _max_user_namespaces);
+				}
+				fclose(fp);
+			} else {
+				fprintf(stderr, "Error reading %s: %m\n", _max_user_namespaces);
+			}
 			_exit(1);
 		}
 	}
diff --git a/vendor/github.com/containers/buildah/unshare/unshare.go b/vendor/github.com/containers/buildah/unshare/unshare.go
index 74b107e44..fbe623660 100644
--- a/vendor/github.com/containers/buildah/unshare/unshare.go
+++ b/vendor/github.com/containers/buildah/unshare/unshare.go
@@ -191,8 +191,8 @@ func (c *Cmd) Start() error {
 				}
 				defer gidmap.Close()
 				if _, err := fmt.Fprintf(gidmap, "%s", g.String()); err != nil {
-					fmt.Fprintf(continueWrite, "error writing /proc/%s/gid_map: %v", pidString, err)
-					return errors.Wrapf(err, "error writing /proc/%s/gid_map", pidString)
+					fmt.Fprintf(continueWrite, "error writing %q to /proc/%s/gid_map: %v", g.String(), pidString, err)
+					return errors.Wrapf(err, "error writing %q to /proc/%s/gid_map", g.String(), pidString)
 				}
 			}
 		}
@@ -222,8 +222,8 @@ func (c *Cmd) Start() error {
 				}
 				defer uidmap.Close()
 				if _, err := fmt.Fprintf(uidmap, "%s", u.String()); err != nil {
-					fmt.Fprintf(continueWrite, "error writing /proc/%s/uid_map: %v", pidString, err)
-					return errors.Wrapf(err, "error writing /proc/%s/uid_map", pidString)
+					fmt.Fprintf(continueWrite, "error writing %q to /proc/%s/uid_map: %v", u.String(), pidString, err)
+					return errors.Wrapf(err, "error writing %q to /proc/%s/uid_map", u.String(), pidString)
 				}
 			}
 		}
diff --git a/vendor/github.com/containers/buildah/util.go b/vendor/github.com/containers/buildah/util.go
index ef9be87fb..7bb651bd2 100644
--- a/vendor/github.com/containers/buildah/util.go
+++ b/vendor/github.com/containers/buildah/util.go
@@ -7,14 +7,19 @@ import (
 	"sync"
 
 	"github.com/containers/image/docker/reference"
+	"github.com/containers/image/pkg/sysregistries"
 	"github.com/containers/image/pkg/sysregistriesv2"
 	"github.com/containers/image/types"
+	"github.com/containers/storage"
 	"github.com/containers/storage/pkg/archive"
 	"github.com/containers/storage/pkg/chrootarchive"
 	"github.com/containers/storage/pkg/idtools"
 	"github.com/containers/storage/pkg/reexec"
 	rspec "github.com/opencontainers/runtime-spec/specs-go"
+	"github.com/opencontainers/selinux/go-selinux"
+	"github.com/opencontainers/selinux/go-selinux/label"
 	"github.com/pkg/errors"
+	"github.com/sirupsen/logrus"
 )
 
 // InitReexec is a wrapper for reexec.Init().  It should be called at
@@ -181,6 +186,70 @@ func getRegistries(sc *types.SystemContext) ([]string, error) {
 	return searchRegistries, nil
 }
 
+// isRegistryInsecure checks if the named registry is marked as not secure
+func isRegistryInsecure(registry string, sc *types.SystemContext) (bool, error) {
+	registries, err := sysregistriesv2.GetRegistries(sc)
+	if err != nil {
+		return false, errors.Wrapf(err, "unable to parse the registries configuration (%s)", sysregistries.RegistriesConfPath(sc))
+	}
+	if reginfo := sysregistriesv2.FindRegistry(registry, registries); reginfo != nil {
+		if reginfo.Insecure {
+			logrus.Debugf("registry %q is marked insecure in registries configuration %q", registry, sysregistries.RegistriesConfPath(sc))
+		} else {
+			logrus.Debugf("registry %q is not marked insecure in registries configuration %q", registry, sysregistries.RegistriesConfPath(sc))
+		}
+		return reginfo.Insecure, nil
+	}
+	logrus.Debugf("registry %q is not listed in registries configuration %q, assuming it's secure", registry, sysregistries.RegistriesConfPath(sc))
+	return false, nil
+}
+
+// isRegistryBlocked checks if the named registry is marked as blocked
+func isRegistryBlocked(registry string, sc *types.SystemContext) (bool, error) {
+	registries, err := sysregistriesv2.GetRegistries(sc)
+	if err != nil {
+		return false, errors.Wrapf(err, "unable to parse the registries configuration (%s)", sysregistries.RegistriesConfPath(sc))
+	}
+	if reginfo := sysregistriesv2.FindRegistry(registry, registries); reginfo != nil {
+		if reginfo.Blocked {
+			logrus.Debugf("registry %q is marked as blocked in registries configuration %q", registry, sysregistries.RegistriesConfPath(sc))
+		} else {
+			logrus.Debugf("registry %q is not marked as blocked in registries configuration %q", registry, sysregistries.RegistriesConfPath(sc))
+		}
+		return reginfo.Blocked, nil
+	}
+	logrus.Debugf("registry %q is not listed in registries configuration %q, assuming it's not blocked", registry, sysregistries.RegistriesConfPath(sc))
+	return false, nil
+}
+
+// isReferenceSomething checks if the registry part of a reference is insecure or blocked
+func isReferenceSomething(ref types.ImageReference, sc *types.SystemContext, what func(string, *types.SystemContext) (bool, error)) (bool, error) {
+	if ref != nil && ref.DockerReference() != nil {
+		if named, ok := ref.DockerReference().(reference.Named); ok {
+			if domain := reference.Domain(named); domain != "" {
+				return what(domain, sc)
+			}
+		}
+	}
+	return false, nil
+}
+
+// isReferenceInsecure checks if the registry part of a reference is insecure
+func isReferenceInsecure(ref types.ImageReference, sc *types.SystemContext) (bool, error) {
+	return isReferenceSomething(ref, sc, isRegistryInsecure)
+}
+
+// isReferenceBlocked checks if the registry part of a reference is blocked
+func isReferenceBlocked(ref types.ImageReference, sc *types.SystemContext) (bool, error) {
+	if ref != nil && ref.Transport() != nil {
+		switch ref.Transport().Name() {
+		case "docker":
+			return isReferenceSomething(ref, sc, isRegistryBlocked)
+		}
+	}
+	return false, nil
+}
+
 // hasRegistry returns a bool/err response if the image has a registry in its
 // name
 func hasRegistry(imageName string) (bool, error) {
@@ -194,3 +263,35 @@ func hasRegistry(imageName string) (bool, error) {
 	}
 	return false, nil
 }
+
+// ReserveSELinuxLabels reads containers storage and reserves SELinux containers
+// fall all existing buildah containers
+func ReserveSELinuxLabels(store storage.Store, id string) error {
+	if selinux.GetEnabled() {
+		containers, err := store.Containers()
+		if err != nil {
+			return err
+		}
+
+		for _, c := range containers {
+			if id == c.ID {
+				continue
+			} else {
+				b, err := OpenBuilder(store, c.ID)
+				if err != nil {
+					if os.IsNotExist(err) {
+						// Ignore not exist errors since containers probably created by other tool
+						// TODO, we need to read other containers json data to reserve their SELinux labels
+						continue
+					}
+					return err
+				}
+				// Prevent different containers from using same MCS label
+				if err := label.ReserveLabel(b.ProcessLabel); err != nil {
+					return err
+				}
+			}
+		}
+	}
+	return nil
+}
diff --git a/vendor/github.com/containers/buildah/vendor.conf b/vendor/github.com/containers/buildah/vendor.conf
index 92c3be927..42389e8c6 100644
--- a/vendor/github.com/containers/buildah/vendor.conf
+++ b/vendor/github.com/containers/buildah/vendor.conf
@@ -3,9 +3,9 @@ github.com/blang/semver master
 github.com/BurntSushi/toml master
 github.com/containerd/continuity master
 github.com/containernetworking/cni v0.7.0-alpha1
-github.com/containers/image 8f11f3ad8912d8bc43a7d25992b8f313ffefd430
+github.com/containers/image 5cc7850824afe2b4fb016f8906666b358c50dc31
 github.com/containers/libpod 2afadeec6696fefac468a49c8ba24b0bc275aa75
-github.com/containers/storage 68332c059156eae970a03245cfcd4d717fb66ecd
+github.com/containers/storage 41294c85d97bef688e18f710402895dbecde3308
 github.com/docker/distribution 5f6282db7d65e6d72ad7c2cc66310724a57be716
 github.com/docker/docker 86f080cff0914e9694068ed78d503701667c4c00
 github.com/docker/docker-credential-helpers d68f9aeca33f5fd3f08eeae5e9d175edf4e731d1
diff --git a/vendor/github.com/containers/image/docker/docker_client.go b/vendor/github.com/containers/image/docker/docker_client.go
index 4fb10c395..a410279a5 100644
--- a/vendor/github.com/containers/image/docker/docker_client.go
+++ b/vendor/github.com/containers/image/docker/docker_client.go
@@ -516,7 +516,7 @@ func (c *dockerClient) detectProperties(ctx context.Context) error {
 		url := fmt.Sprintf(resolvedPingV2URL, scheme, c.registry)
 		resp, err := c.makeRequestToResolvedURL(ctx, "GET", url, nil, nil, -1, noAuth)
 		if err != nil {
-			logrus.Debugf("Ping %s err %#v", url, err)
+			logrus.Debugf("Ping %s err %s (%#v)", url, err.Error(), err)
 			return err
 		}
 		defer resp.Body.Close()
@@ -542,7 +542,7 @@ func (c *dockerClient) detectProperties(ctx context.Context) error {
 		pingV1 := func(scheme string) bool {
 			url := fmt.Sprintf(resolvedPingV1URL, scheme, c.registry)
 			resp, err := c.makeRequestToResolvedURL(ctx, "GET", url, nil, nil, -1, noAuth)
-			logrus.Debugf("Ping %s err %#v", url, err)
+			logrus.Debugf("Ping %s err %s (%#v)", url, err.Error(), err)
 			if err != nil {
 				return false
 			}
diff --git a/vendor/github.com/containers/image/pkg/tlsclientconfig/tlsclientconfig.go b/vendor/github.com/containers/image/pkg/tlsclientconfig/tlsclientconfig.go
index 156651173..6785564e8 100644
--- a/vendor/github.com/containers/image/pkg/tlsclientconfig/tlsclientconfig.go
+++ b/vendor/github.com/containers/image/pkg/tlsclientconfig/tlsclientconfig.go
@@ -34,6 +34,19 @@ func SetupCertificates(dir string, tlsc *tls.Config) error {
 	for _, f := range fs {
 		fullPath := filepath.Join(dir, f.Name())
 		if strings.HasSuffix(f.Name(), ".crt") {
+			logrus.Debugf(" crt: %s", fullPath)
+			data, err := ioutil.ReadFile(fullPath)
+			if err != nil {
+				if os.IsNotExist(err) {
+					// Dangling symbolic link?
+					// Race with someone who deleted the
+					// file after we read the directory's
+					// list of contents?
+					logrus.Warnf("error reading certificate %q: %v", fullPath, err)
+					continue
+				}
+				return err
+			}
 			if tlsc.RootCAs == nil {
 				systemPool, err := tlsconfig.SystemCertPool()
 				if err != nil {
@@ -41,11 +54,6 @@ func SetupCertificates(dir string, tlsc *tls.Config) error {
 				}
 				tlsc.RootCAs = systemPool
 			}
-			logrus.Debugf(" crt: %s", fullPath)
-			data, err := ioutil.ReadFile(fullPath)
-			if err != nil {
-				return err
-			}
 			tlsc.RootCAs.AppendCertsFromPEM(data)
 		}
 		if strings.HasSuffix(f.Name(), ".cert") {
diff --git a/vendor/github.com/containers/storage/drivers/chown_unix.go b/vendor/github.com/containers/storage/drivers/chown_unix.go
index b37a9271a..51d6d754b 100644
--- a/vendor/github.com/containers/storage/drivers/chown_unix.go
+++ b/vendor/github.com/containers/storage/drivers/chown_unix.go
@@ -8,6 +8,7 @@ import (
 	"syscall"
 
 	"github.com/containers/storage/pkg/idtools"
+	"github.com/containers/storage/pkg/system"
 )
 
 func platformLChown(path string, info os.FileInfo, toHost, toContainer *idtools.IDMappings) error {
@@ -49,6 +50,11 @@ func platformLChown(path string, info os.FileInfo, toHost, toContainer *idtools.
 			if err != nil {
 				return fmt.Errorf("%s: lstat(%q): %v", os.Args[0], path, err)
 			}
+			cap, err := system.Lgetxattr(path, "security.capability")
+			if err != nil && err != system.ErrNotSupportedPlatform {
+				return fmt.Errorf("%s: Lgetxattr(%q): %v", os.Args[0], path, err)
+			}
+
 			// Make the change.
 			if err := syscall.Lchown(path, uid, gid); err != nil {
 				return fmt.Errorf("%s: chown(%q): %v", os.Args[0], path, err)
@@ -59,6 +65,12 @@ func platformLChown(path string, info os.FileInfo, toHost, toContainer *idtools.
 					return fmt.Errorf("%s: chmod(%q): %v", os.Args[0], path, err)
 				}
 			}
+			if cap != nil {
+				if err := system.Lsetxattr(path, "security.capability", cap, 0); err != nil {
+					return fmt.Errorf("%s: Lsetxattr(%q): %v", os.Args[0], path, err)
+				}
+			}
+
 		}
 	}
 	return nil