remote copy

Implement `podman-remote cp` and break out the logic from the previously
added `pkg/copy` into it's basic building blocks and move them up into
the `ContainerEngine` interface and `cmd/podman`.

The `--pause` and `--extract` flags are now deprecated and turned into
nops.

Note that this commit is vendoring a non-release version of Buildah to
pull in updates to the copier package.

Signed-off-by: Valentin Rothberg <rothberg@redhat.com>

13 files changed, 285 insertions, 102 deletions

diff --git a/vendor/github.com/containers/buildah/.cirrus.yml b/vendor/github.com/containers/buildah/.cirrus.yml
index 65ce26080..589de9c61 100644
--- a/vendor/github.com/containers/buildah/.cirrus.yml
+++ b/vendor/github.com/containers/buildah/.cirrus.yml
@@ -178,7 +178,7 @@ gce_instance:
             image_name: "${FEDORA_CACHE_IMAGE_NAME}"
             image_name: "${PRIOR_FEDORA_CACHE_IMAGE_NAME}"
             image_name: "${UBUNTU_CACHE_IMAGE_NAME}"
-            image_name: "${PRIOR_UBUNTU_CACHE_IMAGE_NAME}"
+#            image_name: "${PRIOR_UBUNTU_CACHE_IMAGE_NAME}"
 
     # Separate scripts for separate outputs, makes debugging easier.
     setup_script: '${SCRIPT_BASE}/setup.sh |& ${_TIMESTAMP}'
diff --git a/vendor/github.com/containers/buildah/Makefile b/vendor/github.com/containers/buildah/Makefile
index e70dd161d..45f8a8ec8 100644
--- a/vendor/github.com/containers/buildah/Makefile
+++ b/vendor/github.com/containers/buildah/Makefile
@@ -39,6 +39,14 @@ SOURCES=*.go imagebuildah/*.go bind/*.go chroot/*.go cmd/buildah/*.go copier/*.g
 
 LINTFLAGS ?=
 
+ifeq ($(DEBUG), 1)
+  override GOGCFLAGS += -N -l
+endif
+
+#   make all DEBUG=1
+#     Note: Uses the -N -l go compiler options to disable compiler optimizations
+#           and inlining. Using these build options allows you to subsequently
+#           use source debugging tools like delve.
 all: bin/buildah bin/imgtype docs
 
 # Update nix/nixpkgs.json its latest stable commit
@@ -56,7 +64,7 @@ static:
 
 .PHONY: bin/buildah
 bin/buildah:  $(SOURCES)
-	$(GO_BUILD) $(BUILDAH_LDFLAGS) -o $@ $(BUILDFLAGS) ./cmd/buildah
+	$(GO_BUILD) $(BUILDAH_LDFLAGS) -gcflags "$(GOGCFLAGS)" -o $@ $(BUILDFLAGS) ./cmd/buildah
 
 .PHONY: buildah
 buildah: bin/buildah
diff --git a/vendor/github.com/containers/buildah/copier/copier.go b/vendor/github.com/containers/buildah/copier/copier.go
index 84b636202..ef0e4778d 100644
--- a/vendor/github.com/containers/buildah/copier/copier.go
+++ b/vendor/github.com/containers/buildah/copier/copier.go
@@ -10,6 +10,7 @@ import (
 	"net"
 	"os"
 	"os/user"
+	"path"
 	"path/filepath"
 	"strconv"
 	"strings"
@@ -202,11 +203,11 @@ type StatOptions struct {
 // If root and directory are both not specified, the current root directory is
 // used, and relative names in the globs list are treated as being relative to
 // the current working directory.
-// If root is specified and the current OS supports it, the stat() is performed
-// in a chrooted context.  If the directory is specified as an absolute path,
-// it should either be the root directory or a subdirectory of the root
-// directory.  Otherwise, the directory is treated as a path relative to the
-// root directory.
+// If root is specified and the current OS supports it, and the calling process
+// has the necessary privileges, the stat() is performed in a chrooted context.
+// If the directory is specified as an absolute path, it should either be the
+// root directory or a subdirectory of the root directory.  Otherwise, the
+// directory is treated as a path relative to the root directory.
 // Relative names in the glob list are treated as being relative to the
 // directory.
 func Stat(root string, directory string, options StatOptions, globs []string) ([]*StatsForGlob, error) {
@@ -229,18 +230,19 @@ func Stat(root string, directory string, options StatOptions, globs []string) ([
 
 // GetOptions controls parts of Get()'s behavior.
 type GetOptions struct {
-	UIDMap, GIDMap     []idtools.IDMap // map from hostIDs to containerIDs in the output archive
-	Excludes           []string        // contents to pretend don't exist, using the OS-specific path separator
-	ExpandArchives     bool            // extract the contents of named items that are archives
-	ChownDirs          *idtools.IDPair // set ownership on directories. no effect on archives being extracted
-	ChmodDirs          *os.FileMode    // set permissions on directories. no effect on archives being extracted
-	ChownFiles         *idtools.IDPair // set ownership of files. no effect on archives being extracted
-	ChmodFiles         *os.FileMode    // set permissions on files. no effect on archives being extracted
-	StripSetuidBit     bool            // strip the setuid bit off of items being copied. no effect on archives being extracted
-	StripSetgidBit     bool            // strip the setgid bit off of items being copied. no effect on archives being extracted
-	StripStickyBit     bool            // strip the sticky bit off of items being copied. no effect on archives being extracted
-	StripXattrs        bool            // don't record extended attributes of items being copied. no effect on archives being extracted
-	KeepDirectoryNames bool            // don't strip the top directory's basename from the paths of items in subdirectories
+	UIDMap, GIDMap     []idtools.IDMap   // map from hostIDs to containerIDs in the output archive
+	Excludes           []string          // contents to pretend don't exist, using the OS-specific path separator
+	ExpandArchives     bool              // extract the contents of named items that are archives
+	ChownDirs          *idtools.IDPair   // set ownership on directories. no effect on archives being extracted
+	ChmodDirs          *os.FileMode      // set permissions on directories. no effect on archives being extracted
+	ChownFiles         *idtools.IDPair   // set ownership of files. no effect on archives being extracted
+	ChmodFiles         *os.FileMode      // set permissions on files. no effect on archives being extracted
+	StripSetuidBit     bool              // strip the setuid bit off of items being copied. no effect on archives being extracted
+	StripSetgidBit     bool              // strip the setgid bit off of items being copied. no effect on archives being extracted
+	StripStickyBit     bool              // strip the sticky bit off of items being copied. no effect on archives being extracted
+	StripXattrs        bool              // don't record extended attributes of items being copied. no effect on archives being extracted
+	KeepDirectoryNames bool              // don't strip the top directory's basename from the paths of items in subdirectories
+	Rename             map[string]string // rename items with the specified names, or under the specified names
 }
 
 // Get produces an archive containing items that match the specified glob
@@ -248,11 +250,11 @@ type GetOptions struct {
 // If root and directory are both not specified, the current root directory is
 // used, and relative names in the globs list are treated as being relative to
 // the current working directory.
-// If root is specified and the current OS supports it, the contents are read
-// in a chrooted context.  If the directory is specified as an absolute path,
-// it should either be the root directory or a subdirectory of the root
-// directory.  Otherwise, the directory is treated as a path relative to the
-// root directory.
+// If root is specified and the current OS supports it, and the calling process
+// has the necessary privileges, the contents are read in a chrooted context.
+// If the directory is specified as an absolute path, it should either be the
+// root directory or a subdirectory of the root directory.  Otherwise, the
+// directory is treated as a path relative to the root directory.
 // Relative names in the glob list are treated as being relative to the
 // directory.
 func Get(root string, directory string, options GetOptions, globs []string, bulkWriter io.Writer) error {
@@ -278,25 +280,28 @@ func Get(root string, directory string, options GetOptions, globs []string, bulk
 
 // PutOptions controls parts of Put()'s behavior.
 type PutOptions struct {
-	UIDMap, GIDMap    []idtools.IDMap // map from containerIDs to hostIDs when writing contents to disk
-	DefaultDirOwner   *idtools.IDPair // set ownership of implicitly-created directories, default is ChownDirs, or 0:0 if ChownDirs not set
-	DefaultDirMode    *os.FileMode    // set permissions on implicitly-created directories, default is ChmodDirs, or 0755 if ChmodDirs not set
-	ChownDirs         *idtools.IDPair // set ownership of newly-created directories
-	ChmodDirs         *os.FileMode    // set permissions on newly-created directories
-	ChownFiles        *idtools.IDPair // set ownership of newly-created files
-	ChmodFiles        *os.FileMode    // set permissions on newly-created files
-	StripXattrs       bool            // don't bother trying to set extended attributes of items being copied
-	IgnoreXattrErrors bool            // ignore any errors encountered when attempting to set extended attributes
+	UIDMap, GIDMap       []idtools.IDMap   // map from containerIDs to hostIDs when writing contents to disk
+	DefaultDirOwner      *idtools.IDPair   // set ownership of implicitly-created directories, default is ChownDirs, or 0:0 if ChownDirs not set
+	DefaultDirMode       *os.FileMode      // set permissions on implicitly-created directories, default is ChmodDirs, or 0755 if ChmodDirs not set
+	ChownDirs            *idtools.IDPair   // set ownership of newly-created directories
+	ChmodDirs            *os.FileMode      // set permissions on newly-created directories
+	ChownFiles           *idtools.IDPair   // set ownership of newly-created files
+	ChmodFiles           *os.FileMode      // set permissions on newly-created files
+	StripXattrs          bool              // don't bother trying to set extended attributes of items being copied
+	IgnoreXattrErrors    bool              // ignore any errors encountered when attempting to set extended attributes
+	NoOverwriteDirNonDir bool              // instead of quietly overwriting directories with non-directories, return an error
+	Rename               map[string]string // rename items with the specified names, or under the specified names
 }
 
 // Put extracts an archive from the bulkReader at the specified directory.
 // If root and directory are both not specified, the current root directory is
 // used.
-// If root is specified and the current OS supports it, the contents are written
-// in a chrooted context.  If the directory is specified as an absolute path,
-// it should either be the root directory or a subdirectory of the root
-// directory.  Otherwise, the directory is treated as a path relative to the
-// root directory.
+// If root is specified and the current OS supports it, and the calling process
+// has the necessary privileges, the contents are written in a chrooted
+// context.  If the directory is specified as an absolute path, it should
+// either be the root directory or a subdirectory of the root directory.
+// Otherwise, the directory is treated as a path relative to the root
+// directory.
 func Put(root string, directory string, options PutOptions, bulkReader io.Reader) error {
 	req := request{
 		Request:    requestPut,
@@ -325,11 +330,12 @@ type MkdirOptions struct {
 // need to be created will be given the specified ownership and permissions.
 // If root and directory are both not specified, the current root directory is
 // used.
-// If root is specified and the current OS supports it, the directory is
-// created in a chrooted context.  If the directory is specified as an absolute
-// path, it should either be the root directory or a subdirectory of the root
-// directory.  Otherwise, the directory is treated as a path relative to the
-// root directory.
+// If root is specified and the current OS supports it, and the calling process
+// has the necessary privileges, the directory is created in a chrooted
+// context.  If the directory is specified as an absolute path, it should
+// either be the root directory or a subdirectory of the root directory.
+// Otherwise, the directory is treated as a path relative to the root
+// directory.
 func Mkdir(root string, directory string, options MkdirOptions) error {
 	req := request{
 		Request:      requestMkdir,
@@ -547,13 +553,13 @@ func copierWithSubprocess(bulkReader io.Reader, bulkWriter io.Writer, req reques
 		return nil, errors.Wrap(err, step)
 	}
 	if err = encoder.Encode(req); err != nil {
-		return killAndReturn(err, "error encoding request")
+		return killAndReturn(err, "error encoding request for copier subprocess")
 	}
 	if err = decoder.Decode(&resp); err != nil {
-		return killAndReturn(err, "error decoding response")
+		return killAndReturn(err, "error decoding response from copier subprocess")
 	}
 	if err = encoder.Encode(&request{Request: requestQuit}); err != nil {
-		return killAndReturn(err, "error encoding request")
+		return killAndReturn(err, "error encoding request for copier subprocess")
 	}
 	stdinWrite.Close()
 	stdinWrite = nil
@@ -626,7 +632,7 @@ func copierMain() {
 		// Read a request.
 		req := new(request)
 		if err := decoder.Decode(req); err != nil {
-			fmt.Fprintf(os.Stderr, "error decoding request: %v", err)
+			fmt.Fprintf(os.Stderr, "error decoding request from copier parent process: %v", err)
 			os.Exit(1)
 		}
 		if req.Request == requestQuit {
@@ -717,12 +723,12 @@ func copierMain() {
 		}
 		resp, cb, err := copierHandler(bulkReader, bulkWriter, *req)
 		if err != nil {
-			fmt.Fprintf(os.Stderr, "error handling request %#v: %v", *req, err)
+			fmt.Fprintf(os.Stderr, "error handling request %#v from copier parent process: %v", *req, err)
 			os.Exit(1)
 		}
 		// Encode the response.
 		if err := encoder.Encode(resp); err != nil {
-			fmt.Fprintf(os.Stderr, "error encoding response %#v: %v", *req, err)
+			fmt.Fprintf(os.Stderr, "error encoding response %#v for copier parent process: %v", *req, err)
 			os.Exit(1)
 		}
 		// If there's bulk data to transfer, run the callback to either
@@ -1118,6 +1124,34 @@ func copierHandlerGet(bulkWriter io.Writer, req request, pm *fileutils.PatternMa
 	return &response{Stat: statResponse.Stat, Get: getResponse{}}, cb, nil
 }
 
+func handleRename(rename map[string]string, name string) string {
+	if rename == nil {
+		return name
+	}
+	// header names always use '/', so use path instead of filepath to manipulate it
+	if directMapping, ok := rename[name]; ok {
+		return directMapping
+	}
+	prefix, remainder := path.Split(name)
+	for prefix != "" {
+		if mappedPrefix, ok := rename[prefix]; ok {
+			return path.Join(mappedPrefix, remainder)
+		}
+		if prefix[len(prefix)-1] == '/' {
+			if mappedPrefix, ok := rename[prefix[:len(prefix)-1]]; ok {
+				return path.Join(mappedPrefix, remainder)
+			}
+		}
+		newPrefix, middlePart := path.Split(prefix)
+		if newPrefix == prefix {
+			return name
+		}
+		prefix = newPrefix
+		remainder = path.Join(middlePart, remainder)
+	}
+	return name
+}
+
 func copierHandlerGetOne(srcfi os.FileInfo, symlinkTarget, name, contentPath string, options GetOptions, tw *tar.Writer, hardlinkChecker *util.HardlinkChecker, idMappings *idtools.IDMappings) error {
 	// build the header using the name provided
 	hdr, err := tar.FileInfoHeader(srcfi, symlinkTarget)
@@ -1127,6 +1161,9 @@ func copierHandlerGetOne(srcfi os.FileInfo, symlinkTarget, name, contentPath str
 	if name != "" {
 		hdr.Name = filepath.ToSlash(name)
 	}
+	if options.Rename != nil {
+		hdr.Name = handleRename(options.Rename, hdr.Name)
+	}
 	if options.StripSetuidBit {
 		hdr.Mode &^= cISUID
 	}
@@ -1164,6 +1201,9 @@ func copierHandlerGetOne(srcfi os.FileInfo, symlinkTarget, name, contentPath str
 			tr := tar.NewReader(rc)
 			hdr, err := tr.Next()
 			for err == nil {
+				if options.Rename != nil {
+					hdr.Name = handleRename(options.Rename, hdr.Name)
+				}
 				if err = tw.WriteHeader(hdr); err != nil {
 					return errors.Wrapf(err, "error writing tar header from %q to pipe", contentPath)
 				}
@@ -1311,8 +1351,13 @@ func copierHandlerPut(bulkReader io.Reader, req request, idMappings *idtools.IDM
 	createFile := func(path string, tr *tar.Reader) (int64, error) {
 		f, err := os.OpenFile(path, os.O_CREATE|os.O_WRONLY|os.O_TRUNC|os.O_EXCL, 0600)
 		if err != nil && os.IsExist(err) {
-			if err = os.Remove(path); err != nil {
-				return 0, errors.Wrapf(err, "copier: put: error removing file to be overwritten %q", path)
+			if req.PutOptions.NoOverwriteDirNonDir {
+				if st, err2 := os.Lstat(path); err2 == nil && st.IsDir() {
+					return 0, errors.Wrapf(err, "copier: put: error creating file at %q", path)
+				}
+			}
+			if err = os.RemoveAll(path); err != nil {
+				return 0, errors.Wrapf(err, "copier: put: error removing item to be overwritten %q", path)
 			}
 			f, err = os.OpenFile(path, os.O_CREATE|os.O_WRONLY|os.O_TRUNC|os.O_EXCL, 0600)
 		}
@@ -1360,6 +1405,14 @@ func copierHandlerPut(bulkReader io.Reader, req request, idMappings *idtools.IDM
 		tr := tar.NewReader(bulkReader)
 		hdr, err := tr.Next()
 		for err == nil {
+			if len(hdr.Name) == 0 {
+				// no name -> ignore the entry
+				hdr, err = tr.Next()
+				continue
+			}
+			if req.PutOptions.Rename != nil {
+				hdr.Name = handleRename(req.PutOptions.Rename, hdr.Name)
+			}
 			// figure out who should own this new item
 			if idMappings != nil && !idMappings.Empty() {
 				containerPair := idtools.IDPair{UID: hdr.Uid, GID: hdr.Gid}
@@ -1412,35 +1465,70 @@ func copierHandlerPut(bulkReader io.Reader, req request, idMappings *idtools.IDM
 				}
 			case tar.TypeLink:
 				var linkTarget string
+				if req.PutOptions.Rename != nil {
+					hdr.Linkname = handleRename(req.PutOptions.Rename, hdr.Linkname)
+				}
 				if linkTarget, err = resolvePath(targetDirectory, filepath.Join(req.Root, filepath.FromSlash(hdr.Linkname)), nil); err != nil {
 					return errors.Errorf("error resolving hardlink target path %q under root %q", hdr.Linkname, req.Root)
 				}
 				if err = os.Link(linkTarget, path); err != nil && os.IsExist(err) {
+					if req.PutOptions.NoOverwriteDirNonDir {
+						if st, err := os.Lstat(path); err == nil && st.IsDir() {
+							break
+						}
+					}
 					if err = os.Remove(path); err == nil {
 						err = os.Link(linkTarget, path)
 					}
 				}
 			case tar.TypeSymlink:
+				// if req.PutOptions.Rename != nil {
+				//	todo: the general solution requires resolving to an absolute path, handling
+				//	renaming, and then possibly converting back to a relative symlink
+				// }
 				if err = os.Symlink(filepath.FromSlash(hdr.Linkname), filepath.FromSlash(path)); err != nil && os.IsExist(err) {
+					if req.PutOptions.NoOverwriteDirNonDir {
+						if st, err := os.Lstat(path); err == nil && st.IsDir() {
+							break
+						}
+					}
 					if err = os.Remove(path); err == nil {
 						err = os.Symlink(filepath.FromSlash(hdr.Linkname), filepath.FromSlash(path))
 					}
 				}
 			case tar.TypeChar:
 				if err = mknod(path, chrMode(0600), int(mkdev(devMajor, devMinor))); err != nil && os.IsExist(err) {
+					if req.PutOptions.NoOverwriteDirNonDir {
+						if st, err := os.Lstat(path); err == nil && st.IsDir() {
+							break
+						}
+					}
 					if err = os.Remove(path); err == nil {
 						err = mknod(path, chrMode(0600), int(mkdev(devMajor, devMinor)))
 					}
 				}
 			case tar.TypeBlock:
 				if err = mknod(path, blkMode(0600), int(mkdev(devMajor, devMinor))); err != nil && os.IsExist(err) {
+					if req.PutOptions.NoOverwriteDirNonDir {
+						if st, err := os.Lstat(path); err == nil && st.IsDir() {
+							break
+						}
+					}
 					if err = os.Remove(path); err == nil {
 						err = mknod(path, blkMode(0600), int(mkdev(devMajor, devMinor)))
 					}
 				}
 			case tar.TypeDir:
 				if err = os.Mkdir(path, 0700); err != nil && os.IsExist(err) {
-					err = nil
+					var st os.FileInfo
+					if st, err = os.Stat(path); err == nil && !st.IsDir() {
+						// it's not a directory, so remove it and mkdir
+						if err = os.Remove(path); err == nil {
+							err = os.Mkdir(path, 0700)
+						}
+					}
+					// either we removed it and retried, or it was a directory,
+					// in which case we want to just add the new stuff under it
 				}
 				// make a note of the directory's times.  we
 				// might create items under it, which will
@@ -1453,6 +1541,11 @@ func copierHandlerPut(bulkReader io.Reader, req request, idMappings *idtools.IDM
 				})
 			case tar.TypeFifo:
 				if err = mkfifo(path, 0600); err != nil && os.IsExist(err) {
+					if req.PutOptions.NoOverwriteDirNonDir {
+						if st, err := os.Lstat(path); err == nil && st.IsDir() {
+							break
+						}
+					}
 					if err = os.Remove(path); err == nil {
 						err = mkfifo(path, 0600)
 					}
diff --git a/vendor/github.com/containers/buildah/copier/syscall_unix.go b/vendor/github.com/containers/buildah/copier/syscall_unix.go
index 55f2f368a..2c2806d0a 100644
--- a/vendor/github.com/containers/buildah/copier/syscall_unix.go
+++ b/vendor/github.com/containers/buildah/copier/syscall_unix.go
@@ -10,7 +10,7 @@ import (
 	"golang.org/x/sys/unix"
 )
 
-var canChroot = true
+var canChroot = os.Getuid() == 0
 
 func chroot(root string) (bool, error) {
 	if canChroot {
diff --git a/vendor/github.com/containers/buildah/go.mod b/vendor/github.com/containers/buildah/go.mod
index 0d795f6b6..ea9a956be 100644
--- a/vendor/github.com/containers/buildah/go.mod
+++ b/vendor/github.com/containers/buildah/go.mod
@@ -5,10 +5,10 @@ go 1.12
 require (
 	github.com/containerd/containerd v1.4.1 // indirect
 	github.com/containernetworking/cni v0.7.2-0.20190904153231-83439463f784
-	github.com/containers/common v0.29.0
+	github.com/containers/common v0.31.0
 	github.com/containers/image/v5 v5.8.1
 	github.com/containers/ocicrypt v1.0.3
-	github.com/containers/storage v1.24.1
+	github.com/containers/storage v1.24.3
 	github.com/docker/distribution v2.7.1+incompatible
 	github.com/docker/go-units v0.4.0
 	github.com/docker/libnetwork v0.8.0-dev.2.0.20190625141545-5a177b73e316
@@ -21,7 +21,7 @@ require (
 	github.com/moby/sys/mount v0.1.1 // indirect
 	github.com/moby/term v0.0.0-20200915141129-7f0af18e79f2 // indirect
 	github.com/onsi/ginkgo v1.14.2
-	github.com/onsi/gomega v1.10.3
+	github.com/onsi/gomega v1.10.4
 	github.com/opencontainers/go-digest v1.0.0
 	github.com/opencontainers/image-spec v1.0.2-0.20190823105129-775207bd45b6
 	github.com/opencontainers/runc v1.0.0-rc91
diff --git a/vendor/github.com/containers/buildah/go.sum b/vendor/github.com/containers/buildah/go.sum
index e3413bc68..c2082c5ef 100644
--- a/vendor/github.com/containers/buildah/go.sum
+++ b/vendor/github.com/containers/buildah/go.sum
@@ -73,8 +73,8 @@ github.com/containerd/ttrpc v0.0.0-20190828154514-0e0f228740de/go.mod h1:PvCDdDG
 github.com/containerd/typeurl v0.0.0-20180627222232-a93fcdb778cd/go.mod h1:Cm3kwCdlkCfMSHURc+r6fwoGH6/F1hH3S4sg0rLFWPc=
 github.com/containernetworking/cni v0.7.2-0.20190904153231-83439463f784 h1:rqUVLD8I859xRgUx/WMC3v7QAFqbLKZbs+0kqYboRJc=
 github.com/containernetworking/cni v0.7.2-0.20190904153231-83439463f784/go.mod h1:LGwApLUm2FpoOfxTDEeq8T9ipbpZ61X79hmU3w8FmsY=
-github.com/containers/common v0.29.0 h1:hTMC+urdkk5bKfhL/OgCixIX5xjJgQ2l2jPG745ECFQ=
-github.com/containers/common v0.29.0/go.mod h1:yT4GTUHsKRmpaDb+mecXRnIMre7W3ZgwXqaYMywXlaA=
+github.com/containers/common v0.31.0 h1:SRnjfoqbjfaojpY9YJq9JBPEslwB5hoXJbaE+5zMFwM=
+github.com/containers/common v0.31.0/go.mod h1:yT4GTUHsKRmpaDb+mecXRnIMre7W3ZgwXqaYMywXlaA=
 github.com/containers/image/v5 v5.8.1 h1:aHW8a/Kd0dTJ7PTL/fc6y12sJqHxWgqilu+XyHfjD8Q=
 github.com/containers/image/v5 v5.8.1/go.mod h1:blOEFd/iFdeyh891ByhCVUc+xAcaI3gBegXECwz9UbQ=
 github.com/containers/libtrust v0.0.0-20190913040956-14b96171aa3b h1:Q8ePgVfHDplZ7U33NwHZkrVELsZP5fYj9pM5WBZB2GE=
@@ -84,6 +84,8 @@ github.com/containers/ocicrypt v1.0.3/go.mod h1:CUBa+8MRNL/VkpxYIpaMtgn1WgXGyvPQ
 github.com/containers/storage v1.23.7/go.mod h1:cUT2zHjtx+WlVri30obWmM2gpqpi8jfPsmIzP1TVpEI=
 github.com/containers/storage v1.24.1 h1:1+f8fy6ly35c8SLet5jzZ8t0WJJs5+xSpfMAYw0R3kc=
 github.com/containers/storage v1.24.1/go.mod h1:0xJL06Dmd+ZYXIUdnBUPN0JnhHGgwMkLvnnAonJfWJU=
+github.com/containers/storage v1.24.3 h1:8UB4S62l4hrU6Yw3dbsLCJtLg7Ofo39IN2HdckBIX4E=
+github.com/containers/storage v1.24.3/go.mod h1:0xJL06Dmd+ZYXIUdnBUPN0JnhHGgwMkLvnnAonJfWJU=
 github.com/coreos/bbolt v1.3.2/go.mod h1:iRUV2dpdMOn7Bo10OQBFzIJO9kkE559Wcmn+qkEiiKk=
 github.com/coreos/etcd v3.3.13+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE=
 github.com/coreos/go-semver v0.3.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
@@ -303,6 +305,8 @@ github.com/onsi/gomega v1.7.1/go.mod h1:XdKZgCCFLUoM/7CFJVPcG8C1xQ1AJ0vpAezJrB7J
 github.com/onsi/gomega v1.10.1/go.mod h1:iN09h71vgCQne3DLsj+A5owkum+a2tYe+TOCB1ybHNo=
 github.com/onsi/gomega v1.10.3 h1:gph6h/qe9GSUw1NhH1gp+qb+h8rXD8Cy60Z32Qw3ELA=
 github.com/onsi/gomega v1.10.3/go.mod h1:V9xEwhxec5O8UDM77eCW8vLymOMltsqPVYWrpDsH8xc=
+github.com/onsi/gomega v1.10.4 h1:NiTx7EEvBzu9sFOD1zORteLSt3o8gnlvZZwSE9TnY9U=
+github.com/onsi/gomega v1.10.4/go.mod h1:g/HbgYopi++010VEqkFgJHKC09uJiW9UkXvMUuKHUCQ=
 github.com/opencontainers/go-digest v0.0.0-20180430190053-c9281466c8b2/go.mod h1:cMLVZDEM3+U2I4VmLI6N8jQYUd2OVphdqWwCJHrFt2s=
 github.com/opencontainers/go-digest v1.0.0-rc1/go.mod h1:cMLVZDEM3+U2I4VmLI6N8jQYUd2OVphdqWwCJHrFt2s=
 github.com/opencontainers/go-digest v1.0.0 h1:apOUWs51W5PlhuyGyz9FCeeBIOUDA/6nW8Oi/yOhh5U=
@@ -482,6 +486,8 @@ golang.org/x/net v0.0.0-20200324143707-d3edc9973b7e/go.mod h1:qpuaurCH72eLCgpAm/
 golang.org/x/net v0.0.0-20200520004742-59133d7f0dd7/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
 golang.org/x/net v0.0.0-20201006153459-a7d1128ccaa0 h1:wBouT66WTYFXdxfVdz9sVWARVd/2vfGcmI45D2gj45M=
 golang.org/x/net v0.0.0-20201006153459-a7d1128ccaa0/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
+golang.org/x/net v0.0.0-20201202161906-c7110b5ffcbb h1:eBmm0M9fYhWpKZLjQUUKka/LtIxf46G4fxeEz5KJr9U=
+golang.org/x/net v0.0.0-20201202161906-c7110b5ffcbb/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
 golang.org/x/oauth2 v0.0.0-20190226205417-e64efc72b421/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
 golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
diff --git a/vendor/github.com/containers/buildah/install.md b/vendor/github.com/containers/buildah/install.md
index 119315d1f..90e844c3e 100644
--- a/vendor/github.com/containers/buildah/install.md
+++ b/vendor/github.com/containers/buildah/install.md
@@ -69,15 +69,35 @@ sudo apt-get update
 sudo apt-get -y install buildah
 ```
 
-The [Kubic project](https://build.opensuse.org/project/show/devel:kubic:libcontainers:stable)
-provides packages for Debian 10. The Kubic packages for Debian Testing/Bullseye and Debian Unstable/Sid
-have been discontinued to avoid
-[conflicts](https://github.com/containers/buildah/issues/2797) with the official packages.
+If you would prefer newer (though not as well-tested) packages,
+the [Kubic project](https://build.opensuse.org/package/show/devel:kubic:libcontainers:stable/buildah)
+provides packages for Debian 10 and newer. The packages in Kubic project repos are more frequently
+updated than the one in Debian's official repositories, due to how Debian works.
+The build sources for the Kubic packages can be found [here](https://gitlab.com/rhcontainerbot/buildah/-/tree/debian/debian).
+
+CAUTION: On Debian 11 and newer, including Testing and Sid/Unstable, we highly recommend you use Buildah, Podman and Skopeo ONLY from EITHER the Kubic repo
+OR the official Debian repos. Mixing and matching may lead to unpredictable situations including installation conflicts.
+
+```bash
+# Debian 10
+echo 'deb https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/Debian_10/ /' > /etc/apt/sources.list.d/devel:kubic:libcontainers:stable.list
+curl -L https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/Debian_10/Release.key | sudo apt-key add -
+sudo apt-get update
+sudo apt-get -y install buildah
+
+# Debian Testing
+echo 'deb https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/Debian_Testing/ /' > /etc/apt/sources.list.d/devel:kubic:libcontainers:stable.list
+curl -L https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/Debian_Testing/Release.key | sudo apt-key add -
+sudo apt-get update
+sudo apt-get -y install buildah
+
+# Debian Sid/Unstable
+echo 'deb https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/Debian_Unstable/ /' > /etc/apt/sources.list.d/devel:kubic:libcontainers:stable.list
+curl -L https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/Debian_Unstable/Release.key | sudo apt-key add -
+sudo apt-get update
+sudo apt-get -y install buildah
+```
 
-Caution: If you upgrade from Debian 10 to Testing/Bullseye or
-Unstable/Sid you would likely end up downgrading Buildah because the version in
-OBS is more frequently updated than the one in Debian's official repositories,
-due to how Debian works.
 
 
 ### [Fedora](https://www.fedoraproject.org)
@@ -125,7 +145,8 @@ sudo yum -y install buildah
 
 #### [Raspberry Pi OS armhf (ex Raspbian)](https://www.raspberrypi.org/downloads/raspberry-pi-os/)
 
-The Kubic project provides packages for Raspbian 10.
+The [Kubic project](https://build.opensuse.org/package/show/devel:kubic:libcontainers:stable/buildah) provides
+packages for Raspbian 10.
 
 ```bash
 # Raspbian 10
@@ -135,6 +156,8 @@ sudo apt-get update -qq
 sudo apt-get -qq -y install buildah
 ```
 
+The build sources for the Kubic packages can be found [here](https://gitlab.com/rhcontainerbot/buildah/-/tree/debian/debian).
+
 #### [Raspberry Pi OS arm64 (beta)](https://downloads.raspberrypi.org/raspios_arm64/images/)
 
 Raspberry Pi OS use the standard Debian's repositories,
@@ -160,7 +183,16 @@ sudo apt-get -y update
 sudo apt-get -y install buildah
 ```
 
-The [Kubic project](https://build.opensuse.org/package/show/devel:kubic:libcontainers:stable/buildah) provides packages for some older but supported Ubuntu versions (it should also work with direct derivatives like Pop!\_OS).
+If you would prefer newer (though not as well-tested) packages,
+the [Kubic project](https://build.opensuse.org/package/show/devel:kubic:libcontainers:stable/buildah)
+provides packages for active Ubuntu releases 18.04 and newer (it should also work with direct derivatives like Pop!\_OS).
+The packages in Kubic project repos are more frequently updated than the one in Ubuntu's official repositories, due to how Debian/Ubuntu works.
+Checkout the Kubic project page for a list of supported Ubuntu version and architecture combinations.
+The build sources for the Kubic packages can be found [here](https://gitlab.com/rhcontainerbot/buildah/-/tree/debian/debian).
+
+CAUTION: On Ubuntu 20.10 and newer, we highly recommend you use Buildah, Podman and Skopeo ONLY from EITHER the Kubic repo
+OR the official Ubuntu repos. Mixing and matching may lead to unpredictable situations including installation conflicts.
+
 
 ```bash
 . /etc/os-release
@@ -473,6 +505,13 @@ cat /etc/containers/policy.json
 }
 ```
 
+## Debug with Delve and the like
+
+To make a source debug build without optimizations use `DEBUG=1`, like:
+```
+make all DEBUG=1
+```
+
 ## Vendoring
 
 Buildah uses Go Modules for vendoring purposes.  If you need to update or add a vendored package into Buildah, please follow this procedure:
diff --git a/vendor/github.com/containers/buildah/new.go b/vendor/github.com/containers/buildah/new.go
index c1abb1cdb..aab17fea2 100644
--- a/vendor/github.com/containers/buildah/new.go
+++ b/vendor/github.com/containers/buildah/new.go
@@ -4,7 +4,6 @@ import (
 	"context"
 	"fmt"
 	"math/rand"
-	"os"
 	"strings"
 
 	"github.com/containers/buildah/util"
@@ -127,27 +126,10 @@ func resolveLocalImage(systemContext *types.SystemContext, store storage.Store,
 	return nil, "", nil, nil
 }
 
-// getShortNameMode looks up the `CONTAINERS_SHORT_NAME_ALIASING` environment
-// variable.  If it's "on", return `nil` to use the defaults from
-// containers/image and the registries.conf files on the system.  If it's
-// "off", empty or unset, return types.ShortNameModeDisabled to turn off
-// short-name aliasing by default.
-//
-// TODO: remove this function once we want to default to short-name aliasing.
-func getShortNameMode() *types.ShortNameMode {
-	env := os.Getenv("CONTAINERS_SHORT_NAME_ALIASING")
-	if strings.ToLower(env) == "on" {
-		return nil // default to whatever registries.conf and c/image decide
-	}
-	mode := types.ShortNameModeDisabled
-	return &mode
-}
-
 func resolveImage(ctx context.Context, systemContext *types.SystemContext, store storage.Store, options BuilderOptions) (types.ImageReference, string, *storage.Image, error) {
 	if systemContext == nil {
 		systemContext = &types.SystemContext{}
 	}
-	systemContext.ShortNameMode = getShortNameMode()
 
 	fromImage := options.FromImage
 	// If the image name includes a transport we can use it as it.  Special
diff --git a/vendor/github.com/containers/buildah/pkg/cli/common.go b/vendor/github.com/containers/buildah/pkg/cli/common.go
index 123548d97..1e2db58c4 100644
--- a/vendor/github.com/containers/buildah/pkg/cli/common.go
+++ b/vendor/github.com/containers/buildah/pkg/cli/common.go
@@ -17,6 +17,7 @@ import (
 	"github.com/containers/common/pkg/auth"
 	commonComp "github.com/containers/common/pkg/completion"
 	"github.com/containers/common/pkg/config"
+	"github.com/containers/storage/pkg/unshare"
 	"github.com/opencontainers/runtime-spec/specs-go"
 	"github.com/pkg/errors"
 	"github.com/spf13/pflag"
@@ -366,6 +367,9 @@ func DefaultIsolation() string {
 	if isolation != "" {
 		return isolation
 	}
+	if unshare.IsRootless() {
+		return "rootless"
+	}
 	return buildah.OCI
 }
 
diff --git a/vendor/github.com/containers/buildah/pkg/parse/parse.go b/vendor/github.com/containers/buildah/pkg/parse/parse.go
index fb348b252..f256e6c2a 100644
--- a/vendor/github.com/containers/buildah/pkg/parse/parse.go
+++ b/vendor/github.com/containers/buildah/pkg/parse/parse.go
@@ -486,7 +486,7 @@ func ValidateVolumeCtrDir(ctrDir string) error {
 
 // ValidateVolumeOpts validates a volume's options
 func ValidateVolumeOpts(options []string) ([]string, error) {
-	var foundRootPropagation, foundRWRO, foundLabelChange, bindType, foundExec, foundDev, foundSuid int
+	var foundRootPropagation, foundRWRO, foundLabelChange, bindType, foundExec, foundDev, foundSuid, foundChown int
 	finalOpts := make([]string, 0, len(options))
 	for _, opt := range options {
 		switch opt {
@@ -515,6 +515,11 @@ func ValidateVolumeOpts(options []string) ([]string, error) {
 			if foundLabelChange > 1 {
 				return nil, errors.Errorf("invalid options %q, can only specify 1 'z', 'Z', or 'O' option", strings.Join(options, ", "))
 			}
+		case "U":
+			foundChown++
+			if foundChown > 1 {
+				return nil, errors.Errorf("invalid options %q, can only specify 1 'U' option", strings.Join(options, ", "))
+			}
 		case "private", "rprivate", "shared", "rshared", "slave", "rslave", "unbindable", "runbindable":
 			foundRootPropagation++
 			if foundRootPropagation > 1 {
@@ -878,20 +883,12 @@ func NamespaceOptions(c *cobra.Command) (namespaceOptions buildah.NamespaceOptio
 						logrus.Debugf("setting network to disabled")
 						break
 					}
-					if !filepath.IsAbs(how) {
-						options.AddOrReplace(buildah.NamespaceOption{
-							Name: what,
-							Path: how,
-						})
-						policy = buildah.NetworkEnabled
-						logrus.Debugf("setting network configuration to %q", how)
-						break
-					}
 				}
 				how = strings.TrimPrefix(how, "ns:")
 				if _, err := os.Stat(how); err != nil {
-					return nil, buildah.NetworkDefault, errors.Wrapf(err, "error checking for %s namespace at %q", what, how)
+					return nil, buildah.NetworkDefault, errors.Wrapf(err, "error checking for %s namespace", what)
 				}
+				policy = buildah.NetworkEnabled
 				logrus.Debugf("setting %q namespace to %q", what, how)
 				options.AddOrReplace(buildah.NamespaceOption{
 					Name: what,
diff --git a/vendor/github.com/containers/buildah/run_linux.go b/vendor/github.com/containers/buildah/run_linux.go
index d20d39423..dc2f5c5ad 100644
--- a/vendor/github.com/containers/buildah/run_linux.go
+++ b/vendor/github.com/containers/buildah/run_linux.go
@@ -506,8 +506,14 @@ func (b *Builder) setupMounts(mountPoint string, spec *specs.Spec, bundlePath st
 		return err
 	}
 
+	// Get host UID and GID of the container process.
+	processUID, processGID, err := util.GetHostIDs(spec.Linux.UIDMappings, spec.Linux.GIDMappings, spec.Process.User.UID, spec.Process.User.GID)
+	if err != nil {
+		return err
+	}
+
 	// Get the list of explicitly-specified volume mounts.
-	volumes, err := b.runSetupVolumeMounts(spec.Linux.MountLabel, volumeMounts, optionMounts, int(rootUID), int(rootGID))
+	volumes, err := b.runSetupVolumeMounts(spec.Linux.MountLabel, volumeMounts, optionMounts, int(rootUID), int(rootGID), int(processUID), int(processGID))
 	if err != nil {
 		return err
 	}
@@ -1687,7 +1693,7 @@ func (b *Builder) cleanupTempVolumes() {
 	}
 }
 
-func (b *Builder) runSetupVolumeMounts(mountLabel string, volumeMounts []string, optionMounts []specs.Mount, rootUID, rootGID int) (mounts []specs.Mount, Err error) {
+func (b *Builder) runSetupVolumeMounts(mountLabel string, volumeMounts []string, optionMounts []specs.Mount, rootUID, rootGID, processUID, processGID int) (mounts []specs.Mount, Err error) {
 
 	// Make sure the overlay directory is clean before running
 	containerDir, err := b.store.ContainerDirectory(b.ContainerID)
@@ -1699,7 +1705,7 @@ func (b *Builder) runSetupVolumeMounts(mountLabel string, volumeMounts []string,
 	}
 
 	parseMount := func(mountType, host, container string, options []string) (specs.Mount, error) {
-		var foundrw, foundro, foundz, foundZ, foundO bool
+		var foundrw, foundro, foundz, foundZ, foundO, foundU bool
 		var rootProp string
 		for _, opt := range options {
 			switch opt {
@@ -1713,6 +1719,8 @@ func (b *Builder) runSetupVolumeMounts(mountLabel string, volumeMounts []string,
 				foundZ = true
 			case "O":
 				foundO = true
+			case "U":
+				foundU = true
 			case "private", "rprivate", "slave", "rslave", "shared", "rshared":
 				rootProp = opt
 			}
@@ -1730,6 +1738,11 @@ func (b *Builder) runSetupVolumeMounts(mountLabel string, volumeMounts []string,
 				return specs.Mount{}, err
 			}
 		}
+		if foundU {
+			if err := chownSourceVolume(host, processUID, processGID); err != nil {
+				return specs.Mount{}, err
+			}
+		}
 		if foundO {
 			containerDir, err := b.store.ContainerDirectory(b.ContainerID)
 			if err != nil {
@@ -1746,6 +1759,14 @@ func (b *Builder) runSetupVolumeMounts(mountLabel string, volumeMounts []string,
 
 				b.TempVolumes[contentDir] = true
 			}
+
+			// If chown true, add correct ownership to the overlay temp directories.
+			if foundU {
+				if err := chownSourceVolume(contentDir, processUID, processGID); err != nil {
+					return specs.Mount{}, err
+				}
+			}
+
 			return overlayMount, err
 		}
 		if rootProp == "" {
@@ -1789,6 +1810,39 @@ func (b *Builder) runSetupVolumeMounts(mountLabel string, volumeMounts []string,
 	return mounts, nil
 }
 
+// chownSourceVolume changes the ownership of a volume source directory or file within the host.
+func chownSourceVolume(path string, UID, GID int) error {
+	fi, err := os.Lstat(path)
+	if err != nil {
+		// Skip if path does not exist
+		if os.IsNotExist(err) {
+			logrus.Debugf("error returning file info of %q: %v", path, err)
+			return nil
+		}
+		return err
+	}
+
+	currentUID := int(fi.Sys().(*syscall.Stat_t).Uid)
+	currentGID := int(fi.Sys().(*syscall.Stat_t).Gid)
+
+	if UID != currentUID || GID != currentGID {
+		err := filepath.Walk(path, func(filePath string, f os.FileInfo, err error) error {
+			return os.Lchown(filePath, UID, GID)
+		})
+
+		if err != nil {
+			// Skip if path does not exist
+			if os.IsNotExist(err) {
+				logrus.Debugf("error changing the uid and gid of %q: %v", path, err)
+				return nil
+			}
+			return err
+		}
+	}
+
+	return nil
+}
+
 func setupMaskedPaths(g *generate.Generator) {
 	for _, mp := range []string{
 		"/proc/acpi",
diff --git a/vendor/github.com/containers/buildah/troubleshooting.md b/vendor/github.com/containers/buildah/troubleshooting.md
index afd9c640a..02631ae13 100644
--- a/vendor/github.com/containers/buildah/troubleshooting.md
+++ b/vendor/github.com/containers/buildah/troubleshooting.md
@@ -154,5 +154,5 @@ Choose one of the following:
   * Complete the build operation as a privileged user.
   * Install and configure fuse-overlayfs.
     * Install the fuse-overlayfs package for your Linux Distribution.
-    * Add `mount_program = "/usr/bin/fuse-overlayfs` under `[storage.options]` in your `~/.config/containers/storage.conf` file.
+    * Add `mount_program = "/usr/bin/fuse-overlayfs"` under `[storage.options]` in your `~/.config/containers/storage.conf` file.
 ---
diff --git a/vendor/modules.txt b/vendor/modules.txt
index 26b782b85..4ef7fccd1 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -67,7 +67,7 @@ github.com/containernetworking/plugins/pkg/utils/hwaddr
 github.com/containernetworking/plugins/pkg/utils/sysctl
 github.com/containernetworking/plugins/plugins/ipam/host-local/backend
 github.com/containernetworking/plugins/plugins/ipam/host-local/backend/allocator
-# github.com/containers/buildah v1.18.1-0.20201125084616-dd26b137459c
+# github.com/containers/buildah v1.18.1-0.20201217112226-67470615779c
 github.com/containers/buildah
 github.com/containers/buildah/bind
 github.com/containers/buildah/chroot