diff --git a/vendor.conf b/vendor.conf
index 8aaeb6022..4f1229c82 100644
--- a/vendor.conf
+++ b/vendor.conf
@@ -4,7 +4,7 @@ github.com/containerd/cgroups 5e610833b72089b37d0e615de9a92dfc043757c2
 github.com/containerd/typeurl a93fcdb778cd272c6e9b3028b2f42d813e785d40
 github.com/containerd/fifo 3d5202aec260678c48179c56f40e6f38a095738c
 github.com/containerd/btrfs 2e1aa0ddf94f91fa282b6ed87c23bf0d64911244
-github.com/containerd/continuity f44b615e492bdfb371aae2f76ec694d9da1db537
+github.com/containerd/continuity 7f53d412b9eb1cbf744c2063185d703a0ee34700
 github.com/coreos/go-systemd 48702e0da86bd25e76cfef347e2adeb434a0d0a6
 github.com/docker/go-metrics 4ea375f7759c82740c893fc030bc37088d2ec098
 github.com/docker/go-events 9461782956ad83b30282bf90e31fa6a70c255ba9
diff --git a/vendor/github.com/containerd/continuity/context.go b/vendor/github.com/containerd/continuity/context.go
index 45b73dc9e..75c98594a 100644
--- a/vendor/github.com/containerd/continuity/context.go
+++ b/vendor/github.com/containerd/continuity/context.go
@@ -1,3 +1,19 @@
+/*
+   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 continuity
 
 import (
diff --git a/vendor/github.com/containerd/continuity/devices/devices.go b/vendor/github.com/containerd/continuity/devices/devices.go
index 708640704..e4d4a0370 100644
--- a/vendor/github.com/containerd/continuity/devices/devices.go
+++ b/vendor/github.com/containerd/continuity/devices/devices.go
@@ -1,3 +1,19 @@
+/*
+   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 devices
 
 import "fmt"
diff --git a/vendor/github.com/containerd/continuity/devices/devices_unix.go b/vendor/github.com/containerd/continuity/devices/devices_unix.go
index 97fe6b19d..520a5a6f3 100644
--- a/vendor/github.com/containerd/continuity/devices/devices_unix.go
+++ b/vendor/github.com/containerd/continuity/devices/devices_unix.go
@@ -1,5 +1,21 @@
 // +build linux darwin freebsd solaris
 
+/*
+   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 devices
 
 import (
diff --git a/vendor/github.com/containerd/continuity/devices/devices_windows.go b/vendor/github.com/containerd/continuity/devices/devices_windows.go
index 6099d1d77..04627c805 100644
--- a/vendor/github.com/containerd/continuity/devices/devices_windows.go
+++ b/vendor/github.com/containerd/continuity/devices/devices_windows.go
@@ -1,3 +1,19 @@
+/*
+   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 devices
 
 import (
diff --git a/vendor/github.com/containerd/continuity/digests.go b/vendor/github.com/containerd/continuity/digests.go
index 355b08039..bf92275db 100644
--- a/vendor/github.com/containerd/continuity/digests.go
+++ b/vendor/github.com/containerd/continuity/digests.go
@@ -1,3 +1,19 @@
+/*
+   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 continuity
 
 import (
diff --git a/vendor/github.com/containerd/continuity/driver/driver.go b/vendor/github.com/containerd/continuity/driver/driver.go
index 6a0f76dba..327e96af1 100644
--- a/vendor/github.com/containerd/continuity/driver/driver.go
+++ b/vendor/github.com/containerd/continuity/driver/driver.go
@@ -1,3 +1,19 @@
+/*
+   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 driver
 
 import (
diff --git a/vendor/github.com/containerd/continuity/driver/driver_unix.go b/vendor/github.com/containerd/continuity/driver/driver_unix.go
index c7d4e6ba1..6cb5d10fb 100644
--- a/vendor/github.com/containerd/continuity/driver/driver_unix.go
+++ b/vendor/github.com/containerd/continuity/driver/driver_unix.go
@@ -1,5 +1,21 @@
 // +build linux darwin freebsd solaris
 
+/*
+   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 driver
 
 import (
@@ -13,7 +29,11 @@ import (
 )
 
 func (d *driver) Mknod(path string, mode os.FileMode, major, minor int) error {
-	return devices.Mknod(path, mode, major, minor)
+	err := devices.Mknod(path, mode, major, minor)
+	if err != nil {
+		err = &os.PathError{Op: "mknod", Path: path, Err: err}
+	}
+	return err
 }
 
 func (d *driver) Mkfifo(path string, mode os.FileMode) error {
@@ -22,7 +42,11 @@ func (d *driver) Mkfifo(path string, mode os.FileMode) error {
 	}
 	// mknod with a mode that has ModeNamedPipe set creates a fifo, not a
 	// device.
-	return devices.Mknod(path, mode, 0, 0)
+	err := devices.Mknod(path, mode, 0, 0)
+	if err != nil {
+		err = &os.PathError{Op: "mkfifo", Path: path, Err: err}
+	}
+	return err
 }
 
 // Getxattr returns all of the extended attributes for the file at path p.
diff --git a/vendor/github.com/containerd/continuity/driver/driver_windows.go b/vendor/github.com/containerd/continuity/driver/driver_windows.go
index 21c9cf961..f1dcea32a 100644
--- a/vendor/github.com/containerd/continuity/driver/driver_windows.go
+++ b/vendor/github.com/containerd/continuity/driver/driver_windows.go
@@ -1,18 +1,33 @@
+/*
+   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 driver
 
 import (
 	"os"
 
 	"github.com/containerd/continuity/sysx"
-	"github.com/pkg/errors"
 )
 
 func (d *driver) Mknod(path string, mode os.FileMode, major, minor int) error {
-	return errors.Wrap(ErrNotSupported, "cannot create device node on Windows")
+	return &os.PathError{Op: "mknod", Path: path, Err: ErrNotSupported}
 }
 
 func (d *driver) Mkfifo(path string, mode os.FileMode) error {
-	return errors.Wrap(ErrNotSupported, "cannot create fifo on Windows")
+	return &os.PathError{Op: "mkfifo", Path: path, Err: ErrNotSupported}
 }
 
 // Lchmod changes the mode of an file not following symlinks.
diff --git a/vendor/github.com/containerd/continuity/driver/lchmod_linux.go b/vendor/github.com/containerd/continuity/driver/lchmod_linux.go
index 39ffe9cc3..06be28527 100644
--- a/vendor/github.com/containerd/continuity/driver/lchmod_linux.go
+++ b/vendor/github.com/containerd/continuity/driver/lchmod_linux.go
@@ -1,3 +1,19 @@
+/*
+   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 driver
 
 import (
@@ -15,5 +31,9 @@ func (d *driver) Lchmod(path string, mode os.FileMode) error {
 		return nil
 	}
 
-	return unix.Fchmodat(unix.AT_FDCWD, path, uint32(mode), 0)
+	err := unix.Fchmodat(unix.AT_FDCWD, path, uint32(mode), 0)
+	if err != nil {
+		err = &os.PathError{Op: "lchmod", Path: path, Err: err}
+	}
+	return err
 }
diff --git a/vendor/github.com/containerd/continuity/driver/lchmod_unix.go b/vendor/github.com/containerd/continuity/driver/lchmod_unix.go
index 1b539f78e..b8877a8ae 100644
--- a/vendor/github.com/containerd/continuity/driver/lchmod_unix.go
+++ b/vendor/github.com/containerd/continuity/driver/lchmod_unix.go
@@ -1,5 +1,21 @@
 // +build darwin freebsd solaris
 
+/*
+   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 driver
 
 import (
@@ -10,5 +26,9 @@ import (
 
 // Lchmod changes the mode of a file not following symlinks.
 func (d *driver) Lchmod(path string, mode os.FileMode) error {
-	return unix.Fchmodat(unix.AT_FDCWD, path, uint32(mode), unix.AT_SYMLINK_NOFOLLOW)
+	err := unix.Fchmodat(unix.AT_FDCWD, path, uint32(mode), unix.AT_SYMLINK_NOFOLLOW)
+	if err != nil {
+		err = &os.PathError{Op: "lchmod", Path: path, Err: err}
+	}
+	return err
 }
diff --git a/vendor/github.com/containerd/continuity/driver/utils.go b/vendor/github.com/containerd/continuity/driver/utils.go
index 9e0edd7bc..0c688d158 100644
--- a/vendor/github.com/containerd/continuity/driver/utils.go
+++ b/vendor/github.com/containerd/continuity/driver/utils.go
@@ -1,3 +1,19 @@
+/*
+   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 driver
 
 import (
diff --git a/vendor/github.com/containerd/continuity/fs/copy.go b/vendor/github.com/containerd/continuity/fs/copy.go
index 2ac474b92..42df6a9a5 100644
--- a/vendor/github.com/containerd/continuity/fs/copy.go
+++ b/vendor/github.com/containerd/continuity/fs/copy.go
@@ -1,3 +1,19 @@
+/*
+   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 fs
 
 import (
diff --git a/vendor/github.com/containerd/continuity/fs/copy_linux.go b/vendor/github.com/containerd/continuity/fs/copy_linux.go
index b244e3185..e041b5661 100644
--- a/vendor/github.com/containerd/continuity/fs/copy_linux.go
+++ b/vendor/github.com/containerd/continuity/fs/copy_linux.go
@@ -1,3 +1,19 @@
+/*
+   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 fs
 
 import (
diff --git a/vendor/github.com/containerd/continuity/fs/copy_unix.go b/vendor/github.com/containerd/continuity/fs/copy_unix.go
index 29cbb81ed..1a8ae5ebd 100644
--- a/vendor/github.com/containerd/continuity/fs/copy_unix.go
+++ b/vendor/github.com/containerd/continuity/fs/copy_unix.go
@@ -1,5 +1,21 @@
 // +build solaris darwin freebsd
 
+/*
+   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 fs
 
 import (
diff --git a/vendor/github.com/containerd/continuity/fs/copy_windows.go b/vendor/github.com/containerd/continuity/fs/copy_windows.go
index 6fb3de571..be8e6489b 100644
--- a/vendor/github.com/containerd/continuity/fs/copy_windows.go
+++ b/vendor/github.com/containerd/continuity/fs/copy_windows.go
@@ -1,3 +1,19 @@
+/*
+   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 fs
 
 import (
diff --git a/vendor/github.com/containerd/continuity/fs/diff.go b/vendor/github.com/containerd/continuity/fs/diff.go
index f2300e845..e64f9e73d 100644
--- a/vendor/github.com/containerd/continuity/fs/diff.go
+++ b/vendor/github.com/containerd/continuity/fs/diff.go
@@ -1,3 +1,19 @@
+/*
+   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 fs
 
 import (
diff --git a/vendor/github.com/containerd/continuity/fs/diff_unix.go b/vendor/github.com/containerd/continuity/fs/diff_unix.go
index 375181444..7913af27d 100644
--- a/vendor/github.com/containerd/continuity/fs/diff_unix.go
+++ b/vendor/github.com/containerd/continuity/fs/diff_unix.go
@@ -1,5 +1,21 @@
 // +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 fs
 
 import (
diff --git a/vendor/github.com/containerd/continuity/fs/diff_windows.go b/vendor/github.com/containerd/continuity/fs/diff_windows.go
index 8eed36507..4bfa72d3a 100644
--- a/vendor/github.com/containerd/continuity/fs/diff_windows.go
+++ b/vendor/github.com/containerd/continuity/fs/diff_windows.go
@@ -1,3 +1,19 @@
+/*
+   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 fs
 
 import (
diff --git a/vendor/github.com/containerd/continuity/fs/dtype_linux.go b/vendor/github.com/containerd/continuity/fs/dtype_linux.go
index cc06573f1..10510d8de 100644
--- a/vendor/github.com/containerd/continuity/fs/dtype_linux.go
+++ b/vendor/github.com/containerd/continuity/fs/dtype_linux.go
@@ -1,5 +1,21 @@
 // +build linux
 
+/*
+   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 fs
 
 import (
diff --git a/vendor/github.com/containerd/continuity/fs/du.go b/vendor/github.com/containerd/continuity/fs/du.go
index f8fc9a994..fccc985dc 100644
--- a/vendor/github.com/containerd/continuity/fs/du.go
+++ b/vendor/github.com/containerd/continuity/fs/du.go
@@ -1,3 +1,19 @@
+/*
+   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 fs
 
 import "context"
diff --git a/vendor/github.com/containerd/continuity/fs/du_unix.go b/vendor/github.com/containerd/continuity/fs/du_unix.go
index 9f6bc55fd..e22ffbea3 100644
--- a/vendor/github.com/containerd/continuity/fs/du_unix.go
+++ b/vendor/github.com/containerd/continuity/fs/du_unix.go
@@ -1,5 +1,21 @@
 // +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 fs
 
 import (
diff --git a/vendor/github.com/containerd/continuity/fs/du_windows.go b/vendor/github.com/containerd/continuity/fs/du_windows.go
index faa443fed..8f25ec59c 100644
--- a/vendor/github.com/containerd/continuity/fs/du_windows.go
+++ b/vendor/github.com/containerd/continuity/fs/du_windows.go
@@ -1,5 +1,21 @@
 // +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 fs
 
 import (
diff --git a/vendor/github.com/containerd/continuity/fs/fstest/compare.go b/vendor/github.com/containerd/continuity/fs/fstest/compare.go
index 468fe429b..b61d83082 100644
--- a/vendor/github.com/containerd/continuity/fs/fstest/compare.go
+++ b/vendor/github.com/containerd/continuity/fs/fstest/compare.go
@@ -1,3 +1,19 @@
+/*
+   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 fstest
 
 import (
diff --git a/vendor/github.com/containerd/continuity/fs/fstest/compare_unix.go b/vendor/github.com/containerd/continuity/fs/fstest/compare_unix.go
index b100a2a8c..21dcafd0c 100644
--- a/vendor/github.com/containerd/continuity/fs/fstest/compare_unix.go
+++ b/vendor/github.com/containerd/continuity/fs/fstest/compare_unix.go
@@ -1,5 +1,21 @@
 // +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 fstest
 
 var metadataFiles map[string]bool
diff --git a/vendor/github.com/containerd/continuity/fs/fstest/compare_windows.go b/vendor/github.com/containerd/continuity/fs/fstest/compare_windows.go
index 58f650a54..6b9104de0 100644
--- a/vendor/github.com/containerd/continuity/fs/fstest/compare_windows.go
+++ b/vendor/github.com/containerd/continuity/fs/fstest/compare_windows.go
@@ -1,3 +1,19 @@
+/*
+   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 fstest
 
 // TODO: Any more metadata files generated by Windows layers?
diff --git a/vendor/github.com/containerd/continuity/fs/fstest/continuity_util.go b/vendor/github.com/containerd/continuity/fs/fstest/continuity_util.go
index 448eda5e7..9cbfc0b6c 100644
--- a/vendor/github.com/containerd/continuity/fs/fstest/continuity_util.go
+++ b/vendor/github.com/containerd/continuity/fs/fstest/continuity_util.go
@@ -1,3 +1,19 @@
+/*
+   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 fstest
 
 import (
diff --git a/vendor/github.com/containerd/continuity/fs/fstest/file.go b/vendor/github.com/containerd/continuity/fs/fstest/file.go
index 3622db71f..8351bb0b1 100644
--- a/vendor/github.com/containerd/continuity/fs/fstest/file.go
+++ b/vendor/github.com/containerd/continuity/fs/fstest/file.go
@@ -1,3 +1,19 @@
+/*
+   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 fstest
 
 import (
diff --git a/vendor/github.com/containerd/continuity/fs/fstest/file_unix.go b/vendor/github.com/containerd/continuity/fs/fstest/file_unix.go
index 16b9c7dc5..c10e99ef2 100644
--- a/vendor/github.com/containerd/continuity/fs/fstest/file_unix.go
+++ b/vendor/github.com/containerd/continuity/fs/fstest/file_unix.go
@@ -1,5 +1,21 @@
 // +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 fstest
 
 import (
diff --git a/vendor/github.com/containerd/continuity/fs/fstest/file_windows.go b/vendor/github.com/containerd/continuity/fs/fstest/file_windows.go
index 3eba77d4d..1fab035bb 100644
--- a/vendor/github.com/containerd/continuity/fs/fstest/file_windows.go
+++ b/vendor/github.com/containerd/continuity/fs/fstest/file_windows.go
@@ -1,3 +1,19 @@
+/*
+   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 fstest
 
 import (
diff --git a/vendor/github.com/containerd/continuity/fs/fstest/testsuite.go b/vendor/github.com/containerd/continuity/fs/fstest/testsuite.go
index 2e1e6a7ce..4be08a2ec 100644
--- a/vendor/github.com/containerd/continuity/fs/fstest/testsuite.go
+++ b/vendor/github.com/containerd/continuity/fs/fstest/testsuite.go
@@ -1,3 +1,19 @@
+/*
+   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 fstest
 
 import (
diff --git a/vendor/github.com/containerd/continuity/fs/hardlink.go b/vendor/github.com/containerd/continuity/fs/hardlink.go
index 38da93813..762aa45e6 100644
--- a/vendor/github.com/containerd/continuity/fs/hardlink.go
+++ b/vendor/github.com/containerd/continuity/fs/hardlink.go
@@ -1,3 +1,19 @@
+/*
+   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 fs
 
 import "os"
diff --git a/vendor/github.com/containerd/continuity/fs/hardlink_unix.go b/vendor/github.com/containerd/continuity/fs/hardlink_unix.go
index a6f99778d..f95f0904c 100644
--- a/vendor/github.com/containerd/continuity/fs/hardlink_unix.go
+++ b/vendor/github.com/containerd/continuity/fs/hardlink_unix.go
@@ -1,5 +1,21 @@
 // +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 fs
 
 import (
diff --git a/vendor/github.com/containerd/continuity/fs/hardlink_windows.go b/vendor/github.com/containerd/continuity/fs/hardlink_windows.go
index ad8845a7f..748554714 100644
--- a/vendor/github.com/containerd/continuity/fs/hardlink_windows.go
+++ b/vendor/github.com/containerd/continuity/fs/hardlink_windows.go
@@ -1,3 +1,19 @@
+/*
+   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 fs
 
 import "os"
diff --git a/vendor/github.com/containerd/continuity/fs/path.go b/vendor/github.com/containerd/continuity/fs/path.go
index 13fb82638..995981780 100644
--- a/vendor/github.com/containerd/continuity/fs/path.go
+++ b/vendor/github.com/containerd/continuity/fs/path.go
@@ -1,3 +1,19 @@
+/*
+   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 fs
 
 import (
@@ -232,12 +248,6 @@ func walkLink(root, path string, linksWalked *int) (newpath string, islink bool,
 	if err != nil {
 		return "", false, err
 	}
-	if filepath.IsAbs(newpath) && strings.HasPrefix(newpath, root) {
-		newpath = newpath[:len(root)]
-		if !strings.HasPrefix(newpath, "/") {
-			newpath = "/" + newpath
-		}
-	}
 	*linksWalked++
 	return newpath, true, nil
 }
diff --git a/vendor/github.com/containerd/continuity/fs/stat_bsd.go b/vendor/github.com/containerd/continuity/fs/stat_bsd.go
index a1b776fdf..cb7400a33 100644
--- a/vendor/github.com/containerd/continuity/fs/stat_bsd.go
+++ b/vendor/github.com/containerd/continuity/fs/stat_bsd.go
@@ -1,5 +1,21 @@
 // +build darwin freebsd
 
+/*
+   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 fs
 
 import (
diff --git a/vendor/github.com/containerd/continuity/fs/stat_linux.go b/vendor/github.com/containerd/continuity/fs/stat_linux.go
index 1dbb0212b..4a678dd1f 100644
--- a/vendor/github.com/containerd/continuity/fs/stat_linux.go
+++ b/vendor/github.com/containerd/continuity/fs/stat_linux.go
@@ -1,3 +1,19 @@
+/*
+   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 fs
 
 import (
diff --git a/vendor/github.com/containerd/continuity/fs/time.go b/vendor/github.com/containerd/continuity/fs/time.go
index c336f4d88..cde456123 100644
--- a/vendor/github.com/containerd/continuity/fs/time.go
+++ b/vendor/github.com/containerd/continuity/fs/time.go
@@ -1,3 +1,19 @@
+/*
+   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 fs
 
 import "time"
diff --git a/vendor/github.com/containerd/continuity/groups_unix.go b/vendor/github.com/containerd/continuity/groups_unix.go
index e15c14ff8..022d8ab78 100644
--- a/vendor/github.com/containerd/continuity/groups_unix.go
+++ b/vendor/github.com/containerd/continuity/groups_unix.go
@@ -1,3 +1,19 @@
+/*
+   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 continuity
 
 import (
diff --git a/vendor/github.com/containerd/continuity/hardlinks.go b/vendor/github.com/containerd/continuity/hardlinks.go
index 8b39bd061..d493dd777 100644
--- a/vendor/github.com/containerd/continuity/hardlinks.go
+++ b/vendor/github.com/containerd/continuity/hardlinks.go
@@ -1,3 +1,19 @@
+/*
+   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 continuity
 
 import (
diff --git a/vendor/github.com/containerd/continuity/hardlinks_unix.go b/vendor/github.com/containerd/continuity/hardlinks_unix.go
index 1d81a3f96..a15d1759e 100644
--- a/vendor/github.com/containerd/continuity/hardlinks_unix.go
+++ b/vendor/github.com/containerd/continuity/hardlinks_unix.go
@@ -1,5 +1,21 @@
 // +build linux darwin freebsd solaris
 
+/*
+   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 continuity
 
 import (
diff --git a/vendor/github.com/containerd/continuity/hardlinks_windows.go b/vendor/github.com/containerd/continuity/hardlinks_windows.go
index be516c560..5893f4e1a 100644
--- a/vendor/github.com/containerd/continuity/hardlinks_windows.go
+++ b/vendor/github.com/containerd/continuity/hardlinks_windows.go
@@ -1,3 +1,19 @@
+/*
+   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 continuity
 
 import "os"
diff --git a/vendor/github.com/containerd/continuity/ioutils.go b/vendor/github.com/containerd/continuity/ioutils.go
index 3a25bde39..503640ebf 100644
--- a/vendor/github.com/containerd/continuity/ioutils.go
+++ b/vendor/github.com/containerd/continuity/ioutils.go
@@ -1,3 +1,19 @@
+/*
+   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 continuity
 
 import (
diff --git a/vendor/github.com/containerd/continuity/manifest.go b/vendor/github.com/containerd/continuity/manifest.go
index f704f048b..8074bbfbb 100644
--- a/vendor/github.com/containerd/continuity/manifest.go
+++ b/vendor/github.com/containerd/continuity/manifest.go
@@ -1,3 +1,19 @@
+/*
+   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 continuity
 
 import (
diff --git a/vendor/github.com/containerd/continuity/pathdriver/path_driver.go b/vendor/github.com/containerd/continuity/pathdriver/path_driver.go
index b43d55fe9..b0d5a6b56 100644
--- a/vendor/github.com/containerd/continuity/pathdriver/path_driver.go
+++ b/vendor/github.com/containerd/continuity/pathdriver/path_driver.go
@@ -1,3 +1,19 @@
+/*
+   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 pathdriver
 
 import (
diff --git a/vendor/github.com/containerd/continuity/proto/gen.go b/vendor/github.com/containerd/continuity/proto/gen.go
index 8f26ff501..63ce10fb5 100644
--- a/vendor/github.com/containerd/continuity/proto/gen.go
+++ b/vendor/github.com/containerd/continuity/proto/gen.go
@@ -1,3 +1,19 @@
+/*
+   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 proto
 
 //go:generate protoc --go_out=. manifest.proto
diff --git a/vendor/github.com/containerd/continuity/resource.go b/vendor/github.com/containerd/continuity/resource.go
index 3643effb3..d2f52bd31 100644
--- a/vendor/github.com/containerd/continuity/resource.go
+++ b/vendor/github.com/containerd/continuity/resource.go
@@ -1,3 +1,19 @@
+/*
+   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 continuity
 
 import (
diff --git a/vendor/github.com/containerd/continuity/resource_unix.go b/vendor/github.com/containerd/continuity/resource_unix.go
index 4144643e0..0e103ccc5 100644
--- a/vendor/github.com/containerd/continuity/resource_unix.go
+++ b/vendor/github.com/containerd/continuity/resource_unix.go
@@ -1,5 +1,21 @@
 // +build linux darwin freebsd solaris
 
+/*
+   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 continuity
 
 import (
diff --git a/vendor/github.com/containerd/continuity/resource_windows.go b/vendor/github.com/containerd/continuity/resource_windows.go
index 7b44414ac..f9801801c 100644
--- a/vendor/github.com/containerd/continuity/resource_windows.go
+++ b/vendor/github.com/containerd/continuity/resource_windows.go
@@ -1,3 +1,19 @@
+/*
+   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 continuity
 
 import "os"
diff --git a/vendor/github.com/containerd/continuity/syscallx/syscall_unix.go b/vendor/github.com/containerd/continuity/syscallx/syscall_unix.go
index 4205d1e82..0bfa6a040 100644
--- a/vendor/github.com/containerd/continuity/syscallx/syscall_unix.go
+++ b/vendor/github.com/containerd/continuity/syscallx/syscall_unix.go
@@ -1,5 +1,21 @@
 // +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 syscallx
 
 import "syscall"
diff --git a/vendor/github.com/containerd/continuity/syscallx/syscall_windows.go b/vendor/github.com/containerd/continuity/syscallx/syscall_windows.go
index 9637a2875..2ba814990 100644
--- a/vendor/github.com/containerd/continuity/syscallx/syscall_windows.go
+++ b/vendor/github.com/containerd/continuity/syscallx/syscall_windows.go
@@ -1,3 +1,19 @@
+/*
+   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 syscallx
 
 import (
diff --git a/vendor/github.com/containerd/continuity/sysx/file_posix.go b/vendor/github.com/containerd/continuity/sysx/file_posix.go
index d0784f819..e28f3a1b5 100644
--- a/vendor/github.com/containerd/continuity/sysx/file_posix.go
+++ b/vendor/github.com/containerd/continuity/sysx/file_posix.go
@@ -1,3 +1,19 @@
+/*
+   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 sysx
 
 import (
diff --git a/vendor/github.com/containerd/continuity/sysx/nodata_linux.go b/vendor/github.com/containerd/continuity/sysx/nodata_linux.go
index fc47ddb8d..28ce5d8de 100644
--- a/vendor/github.com/containerd/continuity/sysx/nodata_linux.go
+++ b/vendor/github.com/containerd/continuity/sysx/nodata_linux.go
@@ -1,3 +1,19 @@
+/*
+   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 sysx
 
 import (
diff --git a/vendor/github.com/containerd/continuity/sysx/nodata_solaris.go b/vendor/github.com/containerd/continuity/sysx/nodata_solaris.go
index 53cc8e068..e0575f446 100644
--- a/vendor/github.com/containerd/continuity/sysx/nodata_solaris.go
+++ b/vendor/github.com/containerd/continuity/sysx/nodata_solaris.go
@@ -1,3 +1,19 @@
+/*
+   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 sysx
 
 import (
diff --git a/vendor/github.com/containerd/continuity/sysx/nodata_unix.go b/vendor/github.com/containerd/continuity/sysx/nodata_unix.go
index 7e6851209..b26f5b3d0 100644
--- a/vendor/github.com/containerd/continuity/sysx/nodata_unix.go
+++ b/vendor/github.com/containerd/continuity/sysx/nodata_unix.go
@@ -1,5 +1,21 @@
 // +build darwin freebsd
 
+/*
+   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 sysx
 
 import (
diff --git a/vendor/github.com/containerd/continuity/sysx/xattr.go b/vendor/github.com/containerd/continuity/sysx/xattr.go
index a59efee9a..9e4326dcf 100644
--- a/vendor/github.com/containerd/continuity/sysx/xattr.go
+++ b/vendor/github.com/containerd/continuity/sysx/xattr.go
@@ -1,5 +1,21 @@
 // +build linux darwin
 
+/*
+   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 sysx
 
 import (
diff --git a/vendor/github.com/containerd/continuity/sysx/xattr_unsupported.go b/vendor/github.com/containerd/continuity/sysx/xattr_unsupported.go
index 4f6a12e35..c9ef3a1d2 100644
--- a/vendor/github.com/containerd/continuity/sysx/xattr_unsupported.go
+++ b/vendor/github.com/containerd/continuity/sysx/xattr_unsupported.go
@@ -1,5 +1,21 @@
 // +build !linux,!darwin
 
+/*
+   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 sysx
 
 import (