Update vendor of boltdb and containers/image

Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>

43 files changed, 95 insertions, 44 deletions

diff --git a/vendor/github.com/ulikunitz/xz/LICENSE b/vendor/github.com/ulikunitz/xz/LICENSE
index 58ebdc162..d32149979 100644
--- a/vendor/github.com/ulikunitz/xz/LICENSE
+++ b/vendor/github.com/ulikunitz/xz/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2014-2016  Ulrich Kunitz
+Copyright (c) 2014-2020  Ulrich Kunitz
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
diff --git a/vendor/github.com/ulikunitz/xz/TODO.md b/vendor/github.com/ulikunitz/xz/TODO.md
index 1be3bb845..a4224ce14 100644
--- a/vendor/github.com/ulikunitz/xz/TODO.md
+++ b/vendor/github.com/ulikunitz/xz/TODO.md
@@ -1,5 +1,9 @@
 # TODO list
 
+## Release v0.5.x
+
+1. Support check flag in gxz command.
+
 ## Release v0.6
 
 1. Review encoder and check for lzma improvements under xz.
@@ -86,6 +90,11 @@
 
 ## Log
 
+### 2020-02-24
+
+Release v0.5.7 supports the check-ID None and fixes
+[issue #27](https://github.com/ulikunitz/xz/issues/27).
+
 ### 2019-02-20
 
 Release v0.5.6 supports the go.mod file.
diff --git a/vendor/github.com/ulikunitz/xz/bits.go b/vendor/github.com/ulikunitz/xz/bits.go
index fadc1a594..364213dd9 100644
--- a/vendor/github.com/ulikunitz/xz/bits.go
+++ b/vendor/github.com/ulikunitz/xz/bits.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/crc.go b/vendor/github.com/ulikunitz/xz/crc.go
index b44dca96e..638774ada 100644
--- a/vendor/github.com/ulikunitz/xz/crc.go
+++ b/vendor/github.com/ulikunitz/xz/crc.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/format.go b/vendor/github.com/ulikunitz/xz/format.go
index 798159c6c..edfec9a94 100644
--- a/vendor/github.com/ulikunitz/xz/format.go
+++ b/vendor/github.com/ulikunitz/xz/format.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
@@ -46,7 +46,8 @@ const HeaderLen = 12
 
 // Constants for the checksum methods supported by xz.
 const (
-	CRC32  byte = 0x1
+	None   byte = 0x0
+	CRC32       = 0x1
 	CRC64       = 0x4
 	SHA256      = 0xa
 )
@@ -58,7 +59,7 @@ var errInvalidFlags = errors.New("xz: invalid flags")
 // invalid.
 func verifyFlags(flags byte) error {
 	switch flags {
-	case CRC32, CRC64, SHA256:
+	case None, CRC32, CRC64, SHA256:
 		return nil
 	default:
 		return errInvalidFlags
@@ -67,6 +68,7 @@ func verifyFlags(flags byte) error {
 
 // flagstrings maps flag values to strings.
 var flagstrings = map[byte]string{
+	None:   "None",
 	CRC32:  "CRC-32",
 	CRC64:  "CRC-64",
 	SHA256: "SHA-256",
@@ -85,6 +87,8 @@ func flagString(flags byte) string {
 // hash method encoded in flags.
 func newHashFunc(flags byte) (newHash func() hash.Hash, err error) {
 	switch flags {
+	case None:
+		newHash = newNoneHash
 	case CRC32:
 		newHash = newCRC32
 	case CRC64:
diff --git a/vendor/github.com/ulikunitz/xz/fox-check-none.xz b/vendor/github.com/ulikunitz/xz/fox-check-none.xz
new file mode 100644
index 000000000..46043f7dc
--- /dev/null
+++ b/vendor/github.com/ulikunitz/xz/fox-check-none.xz
diff --git a/vendor/github.com/ulikunitz/xz/go.mod b/vendor/github.com/ulikunitz/xz/go.mod
index 9e5eea2c9..330b675bd 100644
--- a/vendor/github.com/ulikunitz/xz/go.mod
+++ b/vendor/github.com/ulikunitz/xz/go.mod
@@ -1 +1,3 @@
 module github.com/ulikunitz/xz
+
+go 1.12
diff --git a/vendor/github.com/ulikunitz/xz/internal/hash/cyclic_poly.go b/vendor/github.com/ulikunitz/xz/internal/hash/cyclic_poly.go
index a32887872..f2861ba3f 100644
--- a/vendor/github.com/ulikunitz/xz/internal/hash/cyclic_poly.go
+++ b/vendor/github.com/ulikunitz/xz/internal/hash/cyclic_poly.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/internal/hash/doc.go b/vendor/github.com/ulikunitz/xz/internal/hash/doc.go
index f99ec2206..e28d23be4 100644
--- a/vendor/github.com/ulikunitz/xz/internal/hash/doc.go
+++ b/vendor/github.com/ulikunitz/xz/internal/hash/doc.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/internal/hash/rabin_karp.go b/vendor/github.com/ulikunitz/xz/internal/hash/rabin_karp.go
index 58635b113..b8e66d972 100644
--- a/vendor/github.com/ulikunitz/xz/internal/hash/rabin_karp.go
+++ b/vendor/github.com/ulikunitz/xz/internal/hash/rabin_karp.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/internal/hash/roller.go b/vendor/github.com/ulikunitz/xz/internal/hash/roller.go
index ab6a19ca4..34c81b38a 100644
--- a/vendor/github.com/ulikunitz/xz/internal/hash/roller.go
+++ b/vendor/github.com/ulikunitz/xz/internal/hash/roller.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/internal/xlog/xlog.go b/vendor/github.com/ulikunitz/xz/internal/xlog/xlog.go
index 0ba45e8ff..678b5a058 100644
--- a/vendor/github.com/ulikunitz/xz/internal/xlog/xlog.go
+++ b/vendor/github.com/ulikunitz/xz/internal/xlog/xlog.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/bintree.go b/vendor/github.com/ulikunitz/xz/lzma/bintree.go
index a781bd195..58d6a92a7 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/bintree.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/bintree.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/bitops.go b/vendor/github.com/ulikunitz/xz/lzma/bitops.go
index e9bab0199..2784ec6ba 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/bitops.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/bitops.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/breader.go b/vendor/github.com/ulikunitz/xz/lzma/breader.go
index 5350d814f..4ad09a14e 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/breader.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/breader.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/buffer.go b/vendor/github.com/ulikunitz/xz/lzma/buffer.go
index 50e0b6d57..9cb7838ac 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/buffer.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/buffer.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/bytewriter.go b/vendor/github.com/ulikunitz/xz/lzma/bytewriter.go
index a3696ba08..290606ddc 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/bytewriter.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/bytewriter.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/decoder.go b/vendor/github.com/ulikunitz/xz/lzma/decoder.go
index 16e14db39..e5a760a50 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/decoder.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/decoder.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/decoderdict.go b/vendor/github.com/ulikunitz/xz/lzma/decoderdict.go
index 564a12b83..ba06712b0 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/decoderdict.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/decoderdict.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/directcodec.go b/vendor/github.com/ulikunitz/xz/lzma/directcodec.go
index e08eb989f..e6e0c6ddf 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/directcodec.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/directcodec.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/distcodec.go b/vendor/github.com/ulikunitz/xz/lzma/distcodec.go
index b053a2dce..69871c04a 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/distcodec.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/distcodec.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/encoder.go b/vendor/github.com/ulikunitz/xz/lzma/encoder.go
index fe1900a66..59055eb64 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/encoder.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/encoder.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/encoderdict.go b/vendor/github.com/ulikunitz/xz/lzma/encoderdict.go
index 9d0fbc703..40f3d3f64 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/encoderdict.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/encoderdict.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/hashtable.go b/vendor/github.com/ulikunitz/xz/lzma/hashtable.go
index d786a9745..e82970eac 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/hashtable.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/hashtable.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/header.go b/vendor/github.com/ulikunitz/xz/lzma/header.go
index bc708969f..cda39462c 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/header.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/header.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/header2.go b/vendor/github.com/ulikunitz/xz/lzma/header2.go
index ac6a71a5a..cd148812c 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/header2.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/header2.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/lengthcodec.go b/vendor/github.com/ulikunitz/xz/lzma/lengthcodec.go
index e51773092..927395bd8 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/lengthcodec.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/lengthcodec.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/literalcodec.go b/vendor/github.com/ulikunitz/xz/lzma/literalcodec.go
index c949d6ebd..ca31530fd 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/literalcodec.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/literalcodec.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/matchalgorithm.go b/vendor/github.com/ulikunitz/xz/lzma/matchalgorithm.go
index 4a244eb1a..7d03ec0dc 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/matchalgorithm.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/matchalgorithm.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/operation.go b/vendor/github.com/ulikunitz/xz/lzma/operation.go
index 733bb99da..a75c9b46c 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/operation.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/operation.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/prob.go b/vendor/github.com/ulikunitz/xz/lzma/prob.go
index 24d50ec68..6987a166f 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/prob.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/prob.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/properties.go b/vendor/github.com/ulikunitz/xz/lzma/properties.go
index 23418e25d..662feba87 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/properties.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/properties.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/rangecodec.go b/vendor/github.com/ulikunitz/xz/lzma/rangecodec.go
index 6361c5e7c..7189a0377 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/rangecodec.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/rangecodec.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/reader.go b/vendor/github.com/ulikunitz/xz/lzma/reader.go
index 2ef3dcaaa..7b7eef31f 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/reader.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/reader.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/reader2.go b/vendor/github.com/ulikunitz/xz/lzma/reader2.go
index a55cfaa4e..33074e624 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/reader2.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/reader2.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/state.go b/vendor/github.com/ulikunitz/xz/lzma/state.go
index 502351052..03f061cf1 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/state.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/state.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/treecodecs.go b/vendor/github.com/ulikunitz/xz/lzma/treecodecs.go
index 504b3d78e..1cb3596fe 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/treecodecs.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/treecodecs.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/writer.go b/vendor/github.com/ulikunitz/xz/lzma/writer.go
index efe34fb6b..5803ecca9 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/writer.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/writer.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzma/writer2.go b/vendor/github.com/ulikunitz/xz/lzma/writer2.go
index 7c1afe157..c263b0666 100644
--- a/vendor/github.com/ulikunitz/xz/lzma/writer2.go
+++ b/vendor/github.com/ulikunitz/xz/lzma/writer2.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/lzmafilter.go b/vendor/github.com/ulikunitz/xz/lzmafilter.go
index 69cf5f7c2..6f4aa2c09 100644
--- a/vendor/github.com/ulikunitz/xz/lzmafilter.go
+++ b/vendor/github.com/ulikunitz/xz/lzmafilter.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
diff --git a/vendor/github.com/ulikunitz/xz/none-check.go b/vendor/github.com/ulikunitz/xz/none-check.go
new file mode 100644
index 000000000..e12d8e476
--- /dev/null
+++ b/vendor/github.com/ulikunitz/xz/none-check.go
@@ -0,0 +1,23 @@
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package xz
+
+import "hash"
+
+type noneHash struct{}
+
+func (h noneHash) Write(p []byte) (n int, err error) { return len(p), nil }
+
+func (h noneHash) Sum(b []byte) []byte { return b }
+
+func (h noneHash) Reset() {}
+
+func (h noneHash) Size() int { return 0 }
+
+func (h noneHash) BlockSize() int { return 0 }
+
+func newNoneHash() hash.Hash {
+	return &noneHash{}
+}
diff --git a/vendor/github.com/ulikunitz/xz/reader.go b/vendor/github.com/ulikunitz/xz/reader.go
index 0634c6bcc..22cd6d500 100644
--- a/vendor/github.com/ulikunitz/xz/reader.go
+++ b/vendor/github.com/ulikunitz/xz/reader.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
@@ -283,7 +283,11 @@ func (c *ReaderConfig) newBlockReader(xz io.Reader, h *blockHeader,
 	if err != nil {
 		return nil, err
 	}
-	br.r = io.TeeReader(fr, br.hash)
+	if br.hash.Size() != 0 {
+		br.r = io.TeeReader(fr, br.hash)
+	} else {
+		br.r = fr
+	}
 
 	return br, nil
 }
diff --git a/vendor/github.com/ulikunitz/xz/writer.go b/vendor/github.com/ulikunitz/xz/writer.go
index c126f7099..aec10dfa6 100644
--- a/vendor/github.com/ulikunitz/xz/writer.go
+++ b/vendor/github.com/ulikunitz/xz/writer.go
@@ -1,4 +1,4 @@
-// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
+// Copyright 2014-2019 Ulrich Kunitz. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
@@ -18,8 +18,10 @@ type WriterConfig struct {
 	DictCap    int
 	BufSize    int
 	BlockSize  int64
-	// checksum method: CRC32, CRC64 or SHA256
+	// checksum method: CRC32, CRC64 or SHA256 (default: CRC64)
 	CheckSum byte
+	// Forces NoChecksum (default: false)
+	NoCheckSum bool
 	// match algorithm
 	Matcher lzma.MatchAlgorithm
 }
@@ -41,6 +43,9 @@ func (c *WriterConfig) fill() {
 	if c.CheckSum == 0 {
 		c.CheckSum = CRC64
 	}
+	if c.NoCheckSum {
+		c.CheckSum = None
+	}
 }
 
 // Verify checks the configuration for errors. Zero values will be
@@ -284,7 +289,11 @@ func (c *WriterConfig) newBlockWriter(xz io.Writer, hash hash.Hash) (bw *blockWr
 	if err != nil {
 		return nil, err
 	}
-	bw.mw = io.MultiWriter(bw.w, bw.hash)
+	if bw.hash.Size() != 0 {
+		bw.mw = io.MultiWriter(bw.w, bw.hash)
+	} else {
+		bw.mw = bw.w
+	}
 	return bw, nil
 }