Bump github.com/containers/storage from 1.23.2 to 1.23.4

Bumps [github.com/containers/storage](https://github.com/containers/storage) from 1.23.2 to 1.23.4.
- [Release notes](https://github.com/containers/storage/releases)
- [Changelog](https://github.com/containers/storage/blob/master/docs/containers-storage-changes.md)
- [Commits](https://github.com/containers/storage/compare/v1.23.2...v1.23.4)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>

18 files changed, 572 insertions, 209 deletions

diff --git a/vendor/github.com/containers/storage/VERSION b/vendor/github.com/containers/storage/VERSION
index 14bee92c9..27ddcc14d 100644
--- a/vendor/github.com/containers/storage/VERSION
+++ b/vendor/github.com/containers/storage/VERSION
@@ -1 +1 @@
-1.23.2
+1.23.4
diff --git a/vendor/github.com/containers/storage/go.mod b/vendor/github.com/containers/storage/go.mod
index 77eef7598..7a568273f 100644
--- a/vendor/github.com/containers/storage/go.mod
+++ b/vendor/github.com/containers/storage/go.mod
@@ -9,9 +9,10 @@ require (
 	github.com/docker/go-units v0.4.0
 	github.com/hashicorp/go-multierror v1.1.0
 	github.com/klauspost/compress v1.10.11
-	github.com/klauspost/pgzip v1.2.4
+	github.com/klauspost/pgzip v1.2.5
 	github.com/mattn/go-shellwords v1.0.10
 	github.com/mistifyio/go-zfs v2.1.1+incompatible
+	github.com/moby/sys/mountinfo v0.1.3
 	github.com/opencontainers/go-digest v1.0.0
 	github.com/opencontainers/runc v1.0.0-rc91
 	github.com/opencontainers/runtime-spec v1.0.3-0.20200520003142-237cc4f519e2
diff --git a/vendor/github.com/containers/storage/go.sum b/vendor/github.com/containers/storage/go.sum
index 04d48eb4f..dba69025f 100644
--- a/vendor/github.com/containers/storage/go.sum
+++ b/vendor/github.com/containers/storage/go.sum
@@ -64,8 +64,8 @@ github.com/kisielk/errcheck v1.2.0/go.mod h1:/BMXB+zMLi60iA8Vv6Ksmxu/1UDYcXs4uQL
 github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
 github.com/klauspost/compress v1.10.11 h1:K9z59aO18Aywg2b/WSgBaUX99mHy2BES18Cr5lBKZHk=
 github.com/klauspost/compress v1.10.11/go.mod h1:aoV0uJVorq1K+umq18yTdKaF57EivdYsUV+/s2qKfXs=
-github.com/klauspost/pgzip v1.2.4 h1:TQ7CNpYKovDOmqzRHKxJh0BeaBI7UdQZYc6p7pMQh1A=
-github.com/klauspost/pgzip v1.2.4/go.mod h1:Ch1tH69qFZu15pkjo5kYi6mth2Zzwzt50oCQKQE9RUs=
+github.com/klauspost/pgzip v1.2.5 h1:qnWYvvKqedOF2ulHpMG72XQol4ILEJ8k2wwRl/Km8oE=
+github.com/klauspost/pgzip v1.2.5/go.mod h1:Ch1tH69qFZu15pkjo5kYi6mth2Zzwzt50oCQKQE9RUs=
 github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
 github.com/konsorten/go-windows-terminal-sequences v1.0.3 h1:CE8S1cTafDpPvMhIxNJKvHsGVBgn1xWYf1NbHQhywc8=
 github.com/konsorten/go-windows-terminal-sequences v1.0.3/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
diff --git a/vendor/github.com/containers/storage/layers.go b/vendor/github.com/containers/storage/layers.go
index dc21f75fd..52577299c 100644
--- a/vendor/github.com/containers/storage/layers.go
+++ b/vendor/github.com/containers/storage/layers.go
@@ -1342,6 +1342,7 @@ func (r *layerStore) ApplyDiff(to string, diff io.Reader) (size int64, err error
 	if err != nil {
 		return -1, err
 	}
+	defer idLogger.Close()
 	payload, err := asm.NewInputTarStream(io.TeeReader(uncompressed, io.MultiWriter(uncompressedCounter, idLogger)), metadata, storage.NewDiscardFilePutter())
 	if err != nil {
 		return -1, err
@@ -1356,7 +1357,6 @@ func (r *layerStore) ApplyDiff(to string, diff io.Reader) (size int64, err error
 		return -1, err
 	}
 	compressor.Close()
-	idLogger.Close()
 	if err == nil {
 		if err := os.MkdirAll(filepath.Dir(r.tspath(layer.ID)), 0700); err != nil {
 			return -1, err
diff --git a/vendor/github.com/containers/storage/pkg/mount/mount.go b/vendor/github.com/containers/storage/pkg/mount/mount.go
index 4b888dceb..8273ab5a9 100644
--- a/vendor/github.com/containers/storage/pkg/mount/mount.go
+++ b/vendor/github.com/containers/storage/pkg/mount/mount.go
@@ -4,8 +4,6 @@ import (
 	"sort"
 	"strconv"
 	"strings"
-
-	"github.com/containers/storage/pkg/fileutils"
 )
 
 // mountError holds an error from a mount or unmount operation
@@ -43,33 +41,6 @@ func (e *mountError) Cause() error {
 	return e.err
 }
 
-// GetMounts retrieves a list of mounts for the current running process.
-func GetMounts() ([]*Info, error) {
-	return parseMountTable()
-}
-
-// Mounted determines if a specified mountpoint has been mounted.
-// On Linux it looks at /proc/self/mountinfo and on Solaris at mnttab.
-func Mounted(mountpoint string) (bool, error) {
-	entries, err := parseMountTable()
-	if err != nil {
-		return false, err
-	}
-
-	mountpoint, err = fileutils.ReadSymlinkedPath(mountpoint)
-	if err != nil {
-		return false, err
-	}
-
-	// Search the table for the mountpoint
-	for _, e := range entries {
-		if e.Mountpoint == mountpoint {
-			return true, nil
-		}
-	}
-	return false, nil
-}
-
 // Mount will mount filesystem according to the specified configuration, on the
 // condition that the target path is *not* already mounted. Options must be
 // specified like the mount or fstab unix commands: "opt1=val1,opt2=val2". See
diff --git a/vendor/github.com/containers/storage/pkg/mount/mountinfo.go b/vendor/github.com/containers/storage/pkg/mount/mountinfo.go
index e3fc3535e..efc6c406e 100644
--- a/vendor/github.com/containers/storage/pkg/mount/mountinfo.go
+++ b/vendor/github.com/containers/storage/pkg/mount/mountinfo.go
@@ -1,40 +1,21 @@
 package mount
 
-// Info reveals information about a particular mounted filesystem. This
-// struct is populated from the content in the /proc/<pid>/mountinfo file.
-type Info struct {
-	// ID is a unique identifier of the mount (may be reused after umount).
-	ID int
+import (
+	"github.com/containers/storage/pkg/fileutils"
+	"github.com/moby/sys/mountinfo"
+)
 
-	// Parent indicates the ID of the mount parent (or of self for the top of the
-	// mount tree).
-	Parent int
+type Info = mountinfo.Info
 
-	// Major indicates one half of the device ID which identifies the device class.
-	Major int
-
-	// Minor indicates one half of the device ID which identifies a specific
-	// instance of device.
-	Minor int
-
-	// Root of the mount within the filesystem.
-	Root string
-
-	// Mountpoint indicates the mount point relative to the process's root.
-	Mountpoint string
-
-	// Opts represents mount-specific options.
-	Opts string
-
-	// Optional represents optional fields.
-	Optional string
-
-	// Fstype indicates the type of filesystem, such as EXT3.
-	Fstype string
-
-	// Source indicates filesystem specific information or "none".
-	Source string
+func GetMounts() ([]*Info, error) {
+	return mountinfo.GetMounts(nil)
+}
 
-	// VfsOpts represents per super block options.
-	VfsOpts string
+// Mounted determines if a specified mountpoint has been mounted.
+func Mounted(mountpoint string) (bool, error) {
+	mountpoint, err := fileutils.ReadSymlinkedPath(mountpoint)
+	if err != nil {
+		return false, err
+	}
+	return mountinfo.Mounted(mountpoint)
 }
diff --git a/vendor/github.com/containers/storage/pkg/mount/mountinfo_linux.go b/vendor/github.com/containers/storage/pkg/mount/mountinfo_linux.go
index 19556d06b..cbc0299fb 100644
--- a/vendor/github.com/containers/storage/pkg/mount/mountinfo_linux.go
+++ b/vendor/github.com/containers/storage/pkg/mount/mountinfo_linux.go
@@ -1,120 +1,5 @@
 package mount
 
-import (
-	"bufio"
-	"fmt"
-	"io"
-	"os"
-	"strconv"
-	"strings"
+import "github.com/moby/sys/mountinfo"
 
-	"github.com/pkg/errors"
-)
-
-// Parse /proc/self/mountinfo because comparing Dev and ino does not work from
-// bind mounts
-func parseMountTable() ([]*Info, error) {
-	f, err := os.Open("/proc/self/mountinfo")
-	if err != nil {
-		return nil, err
-	}
-	defer f.Close()
-
-	return parseInfoFile(f)
-}
-
-func parseInfoFile(r io.Reader) ([]*Info, error) {
-	s := bufio.NewScanner(r)
-	out := []*Info{}
-
-	for s.Scan() {
-		/*
-		   36 35 98:0 /mnt1 /mnt2 rw,noatime master:1 - ext3 /dev/root rw,errors=continue
-		   (0)(1)(2)   (3)   (4)      (5)      (6)   (7) (8)   (9)        (10)
-
-		   (0) mount ID:  unique identifier of the mount (may be reused after umount)
-		   (1) parent ID:  ID of parent (or of self for the top of the mount tree)
-		   (2) major:minor:  value of st_dev for files on filesystem
-		   (3) root:  root of the mount within the filesystem
-		   (4) mount point:  mount point relative to the process's root
-		   (5) mount options:  per mount options
-		   (6) optional fields:  zero or more fields of the form "tag[:value]"
-		   (7) separator:  marks the end of the optional fields
-		   (8) filesystem type:  name of filesystem of the form "type[.subtype]"
-		   (9) mount source:  filesystem specific information or "none"
-		   (10) super options:  per super block options
-		*/
-		text := s.Text()
-		fields := strings.Split(text, " ")
-		numFields := len(fields)
-		if numFields < 10 {
-			// should be at least 10 fields
-			return nil, errors.Errorf("Parsing %q failed: not enough fields (%d)", text, numFields)
-		}
-
-		p := &Info{}
-		// ignore any number parsing errors, there should not be any
-		p.ID, _ = strconv.Atoi(fields[0])
-		p.Parent, _ = strconv.Atoi(fields[1])
-		mm := strings.Split(fields[2], ":")
-		if len(mm) != 2 {
-			return nil, fmt.Errorf("Parsing %q failed: unexpected minor:major pair %s", text, mm)
-		}
-		p.Major, _ = strconv.Atoi(mm[0])
-		p.Minor, _ = strconv.Atoi(mm[1])
-		p.Root = fields[3]
-		p.Mountpoint = fields[4]
-		p.Opts = fields[5]
-
-		// one or more optional fields, when a separator (-)
-		i := 6
-		for ; i < numFields && fields[i] != "-"; i++ {
-			switch i {
-			case 6:
-				p.Optional = string(fields[6])
-			default:
-				/* NOTE there might be more optional fields before the separator,
-				   such as fields[7] or fields[8], although as of Linux kernel 5.5
-				   the only known ones are mount propagation flags in fields[6].
-				   The correct behavior is to ignore any unknown optional fields.
-				*/
-			}
-		}
-		if i == numFields {
-			return nil, fmt.Errorf("Parsing %q failed: missing - separator", text)
-		}
-
-		// There should be 3 fields after the separator...
-		if i+4 > numFields {
-			return nil, fmt.Errorf("Parsing %q failed: not enough fields after a - separator", text)
-		}
-		// ... but in Linux <= 3.9 mounting a cifs with spaces in a share name
-		// (like "//serv/My Documents") _may_ end up having a space in the last field
-		// of mountinfo (like "unc=//serv/My Documents"). Since kernel 3.10-rc1, cifs
-		// option unc= is ignored,  so a space should not appear. In here we ignore
-		// those "extra" fields caused by extra spaces.
-		p.Fstype = fields[i+1]
-		p.Source = fields[i+2]
-		p.VfsOpts = fields[i+3]
-
-		out = append(out, p)
-	}
-	if err := s.Err(); err != nil {
-		return nil, err
-	}
-
-	return out, nil
-}
-
-// PidMountInfo collects the mounts for a specific process ID. If the process
-// ID is unknown, it is better to use `GetMounts` which will inspect
-// "/proc/self/mountinfo" instead.
-func PidMountInfo(pid int) ([]*Info, error) {
-	f, err := os.Open(fmt.Sprintf("/proc/%d/mountinfo", pid))
-	if err != nil {
-		return nil, err
-	}
-	defer f.Close()
-
-	return parseInfoFile(f)
-}
+var PidMountInfo = mountinfo.PidMountInfo
diff --git a/vendor/github.com/containers/storage/pkg/mount/mountinfo_unsupported.go b/vendor/github.com/containers/storage/pkg/mount/mountinfo_unsupported.go
deleted file mode 100644
index 6cde1ed77..000000000
--- a/vendor/github.com/containers/storage/pkg/mount/mountinfo_unsupported.go
+++ /dev/null
@@ -1,12 +0,0 @@
-// +build !linux
-
-package mount
-
-import (
-	"fmt"
-	"runtime"
-)
-
-func parseMountTable() ([]*Info, error) {
-	return nil, fmt.Errorf("mount.parseMountTable is not implemented on %s/%s", runtime.GOOS, runtime.GOARCH)
-}
diff --git a/vendor/github.com/klauspost/pgzip/.travis.yml b/vendor/github.com/klauspost/pgzip/.travis.yml
index 6e9fca0ba..acfec4bb0 100644
--- a/vendor/github.com/klauspost/pgzip/.travis.yml
+++ b/vendor/github.com/klauspost/pgzip/.travis.yml
@@ -1,19 +1,22 @@
 language: go
 
-sudo: false
-
 os:
   - linux
   - osx
 
 go:
-  - 1.9.x
-  - 1.10.x
+  - 1.13.x
+  - 1.14.x
+  - 1.15.x
   - master
 
-script: 
- - go test -v -cpu=1,2,4 .
- - go test -v -cpu=2 -race -short .
+env:
+  - GO111MODULE=off
+
+script:
+  - diff <(gofmt -d .) <(printf "")
+  - go test -v -cpu=1,2,4 .
+  - go test -v -cpu=2 -race -short .
 
 matrix:
   allow_failures:
diff --git a/vendor/github.com/klauspost/pgzip/gunzip.go b/vendor/github.com/klauspost/pgzip/gunzip.go
index 93efec714..d1ae730b2 100644
--- a/vendor/github.com/klauspost/pgzip/gunzip.go
+++ b/vendor/github.com/klauspost/pgzip/gunzip.go
@@ -331,6 +331,16 @@ func (z *Reader) killReadAhead() error {
 		// Wait for decompressor to be closed and return error, if any.
 		e, ok := <-z.closeErr
 		z.activeRA = false
+
+		for blk := range z.readAhead {
+			if blk.b != nil {
+				z.blockPool <- blk.b
+			}
+		}
+		if cap(z.current) > 0 {
+			z.blockPool <- z.current
+			z.current = nil
+		}
 		if !ok {
 			// Channel is closed, so if there was any error it has already been returned.
 			return nil
@@ -418,6 +428,7 @@ func (z *Reader) doReadAhead() {
 			case z.readAhead <- read{b: buf, err: err}:
 			case <-closeReader:
 				// Sent on close, we don't care about the next results
+				z.blockPool <- buf
 				return
 			}
 			if err != nil {
diff --git a/vendor/github.com/moby/sys/mountinfo/LICENSE b/vendor/github.com/moby/sys/mountinfo/LICENSE
new file mode 100644
index 000000000..d64569567
--- /dev/null
+++ b/vendor/github.com/moby/sys/mountinfo/LICENSE
@@ -0,0 +1,202 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
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+      communication on electronic mailing lists, source code control systems,
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+      designated in writing by the copyright owner as "Not a Contribution."
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+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
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+      copyright license to reproduce, prepare Derivative Works of,
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+   7. Disclaimer of Warranty. Unless required by applicable law or
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+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
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+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
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+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   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.
diff --git a/vendor/github.com/moby/sys/mountinfo/go.mod b/vendor/github.com/moby/sys/mountinfo/go.mod
new file mode 100644
index 000000000..10d9a15a6
--- /dev/null
+++ b/vendor/github.com/moby/sys/mountinfo/go.mod
@@ -0,0 +1,3 @@
+module github.com/moby/sys/mountinfo
+
+go 1.14
diff --git a/vendor/github.com/moby/sys/mountinfo/mountinfo.go b/vendor/github.com/moby/sys/mountinfo/mountinfo.go
new file mode 100644
index 000000000..136b14167
--- /dev/null
+++ b/vendor/github.com/moby/sys/mountinfo/mountinfo.go
@@ -0,0 +1,67 @@
+package mountinfo
+
+import "io"
+
+// GetMounts retrieves a list of mounts for the current running process,
+// with an optional filter applied (use nil for no filter).
+func GetMounts(f FilterFunc) ([]*Info, error) {
+	return parseMountTable(f)
+}
+
+// GetMountsFromReader retrieves a list of mounts from the
+// reader provided, with an optional filter applied (use nil
+// for no filter). This can be useful in tests or benchmarks
+// that provide a fake mountinfo data.
+func GetMountsFromReader(reader io.Reader, f FilterFunc) ([]*Info, error) {
+	return parseInfoFile(reader, f)
+}
+
+// Mounted determines if a specified mountpoint has been mounted.
+// On Linux it looks at /proc/self/mountinfo.
+func Mounted(mountpoint string) (bool, error) {
+	entries, err := GetMounts(SingleEntryFilter(mountpoint))
+	if err != nil {
+		return false, err
+	}
+
+	return len(entries) > 0, nil
+}
+
+// Info reveals information about a particular mounted filesystem. This
+// struct is populated from the content in the /proc/<pid>/mountinfo file.
+type Info struct {
+	// ID is a unique identifier of the mount (may be reused after umount).
+	ID int
+
+	// Parent indicates the ID of the mount parent (or of self for the top of the
+	// mount tree).
+	Parent int
+
+	// Major indicates one half of the device ID which identifies the device class.
+	Major int
+
+	// Minor indicates one half of the device ID which identifies a specific
+	// instance of device.
+	Minor int
+
+	// Root of the mount within the filesystem.
+	Root string
+
+	// Mountpoint indicates the mount point relative to the process's root.
+	Mountpoint string
+
+	// Opts represents mount-specific options.
+	Opts string
+
+	// Optional represents optional fields.
+	Optional string
+
+	// Fstype indicates the type of filesystem, such as EXT3.
+	Fstype string
+
+	// Source indicates filesystem specific information or "none".
+	Source string
+
+	// VfsOpts represents per super block options.
+	VfsOpts string
+}
diff --git a/vendor/github.com/moby/sys/mountinfo/mountinfo_filters.go b/vendor/github.com/moby/sys/mountinfo/mountinfo_filters.go
new file mode 100644
index 000000000..795026465
--- /dev/null
+++ b/vendor/github.com/moby/sys/mountinfo/mountinfo_filters.go
@@ -0,0 +1,58 @@
+package mountinfo
+
+import "strings"
+
+// FilterFunc is a type defining a callback function for GetMount(),
+// used to filter out mountinfo entries we're not interested in,
+// and/or stop further processing if we found what we wanted.
+//
+// It takes a pointer to the Info struct (not fully populated,
+// currently only Mountpoint, Fstype, Source, and (on Linux)
+// VfsOpts are filled in), and returns two booleans:
+//
+//  - skip: true if the entry should be skipped
+//  - stop: true if parsing should be stopped after the entry
+type FilterFunc func(*Info) (skip, stop bool)
+
+// PrefixFilter discards all entries whose mount points
+// do not start with a specific prefix
+func PrefixFilter(prefix string) FilterFunc {
+	return func(m *Info) (bool, bool) {
+		skip := !strings.HasPrefix(m.Mountpoint, prefix)
+		return skip, false
+	}
+}
+
+// SingleEntryFilter looks for a specific entry
+func SingleEntryFilter(mp string) FilterFunc {
+	return func(m *Info) (bool, bool) {
+		if m.Mountpoint == mp {
+			return false, true // don't skip, stop now
+		}
+		return true, false // skip, keep going
+	}
+}
+
+// ParentsFilter returns all entries whose mount points
+// can be parents of a path specified, discarding others.
+//
+// For example, given `/var/lib/docker/something`, entries
+// like `/var/lib/docker`, `/var` and `/` are returned.
+func ParentsFilter(path string) FilterFunc {
+	return func(m *Info) (bool, bool) {
+		skip := !strings.HasPrefix(path, m.Mountpoint)
+		return skip, false
+	}
+}
+
+// FstypeFilter returns all entries that match provided fstype(s).
+func FstypeFilter(fstype ...string) FilterFunc {
+	return func(m *Info) (bool, bool) {
+		for _, t := range fstype {
+			if m.Fstype == t {
+				return false, false // don't skeep, keep going
+			}
+		}
+		return true, false // skip, keep going
+	}
+}
diff --git a/vendor/github.com/containers/storage/pkg/mount/mountinfo_freebsd.go b/vendor/github.com/moby/sys/mountinfo/mountinfo_freebsd.go
index 4f32edcd9..a7dbb1b46 100644
--- a/vendor/github.com/containers/storage/pkg/mount/mountinfo_freebsd.go
+++ b/vendor/github.com/moby/sys/mountinfo/mountinfo_freebsd.go
@@ -1,4 +1,4 @@
-package mount
+package mountinfo
 
 /*
 #include <sys/param.h>
@@ -13,9 +13,8 @@ import (
 	"unsafe"
 )
 
-// Parse /proc/self/mountinfo because comparing Dev and ino does not work from
-// bind mounts.
-func parseMountTable() ([]*Info, error) {
+// parseMountTable returns information about mounted filesystems
+func parseMountTable(filter FilterFunc) ([]*Info, error) {
 	var rawEntries *C.struct_statfs
 
 	count := int(C.getmntinfo(&rawEntries, C.MNT_WAIT))
@@ -32,10 +31,23 @@ func parseMountTable() ([]*Info, error) {
 	var out []*Info
 	for _, entry := range entries {
 		var mountinfo Info
+		var skip, stop bool
 		mountinfo.Mountpoint = C.GoString(&entry.f_mntonname[0])
-		mountinfo.Source = C.GoString(&entry.f_mntfromname[0])
 		mountinfo.Fstype = C.GoString(&entry.f_fstypename[0])
+		mountinfo.Source = C.GoString(&entry.f_mntfromname[0])
+
+		if filter != nil {
+			// filter out entries we're not interested in
+			skip, stop = filter(&mountinfo)
+			if skip {
+				continue
+			}
+		}
+
 		out = append(out, &mountinfo)
+		if stop {
+			break
+		}
 	}
 	return out, nil
 }
diff --git a/vendor/github.com/moby/sys/mountinfo/mountinfo_linux.go b/vendor/github.com/moby/sys/mountinfo/mountinfo_linux.go
new file mode 100644
index 000000000..2d630c8dc
--- /dev/null
+++ b/vendor/github.com/moby/sys/mountinfo/mountinfo_linux.go
@@ -0,0 +1,152 @@
+// +build go1.13
+
+package mountinfo
+
+import (
+	"bufio"
+	"fmt"
+	"io"
+	"os"
+	"strconv"
+	"strings"
+)
+
+func parseInfoFile(r io.Reader, filter FilterFunc) ([]*Info, error) {
+	s := bufio.NewScanner(r)
+	out := []*Info{}
+	var err error
+	for s.Scan() {
+		if err = s.Err(); err != nil {
+			return nil, err
+		}
+		/*
+		   See http://man7.org/linux/man-pages/man5/proc.5.html
+
+		   36 35 98:0 /mnt1 /mnt2 rw,noatime master:1 - ext3 /dev/root rw,errors=continue
+		   (1)(2)(3)   (4)   (5)      (6)      (7)   (8) (9)   (10)         (11)
+
+		   (1) mount ID:  unique identifier of the mount (may be reused after umount)
+		   (2) parent ID:  ID of parent (or of self for the top of the mount tree)
+		   (3) major:minor:  value of st_dev for files on filesystem
+		   (4) root:  root of the mount within the filesystem
+		   (5) mount point:  mount point relative to the process's root
+		   (6) mount options:  per mount options
+		   (7) optional fields:  zero or more fields of the form "tag[:value]"
+		   (8) separator:  marks the end of the optional fields
+		   (9) filesystem type:  name of filesystem of the form "type[.subtype]"
+		   (10) mount source:  filesystem specific information or "none"
+		   (11) super options:  per super block options
+
+		   In other words, we have:
+		    * 6 mandatory fields	(1)..(6)
+		    * 0 or more optional fields	(7)
+		    * a separator field		(8)
+		    * 3 mandatory fields	(9)..(11)
+		*/
+
+		text := s.Text()
+		fields := strings.Split(text, " ")
+		numFields := len(fields)
+		if numFields < 10 {
+			// should be at least 10 fields
+			return nil, fmt.Errorf("Parsing '%s' failed: not enough fields (%d)", text, numFields)
+		}
+
+		// separator field
+		sepIdx := numFields - 4
+		// In Linux <= 3.9 mounting a cifs with spaces in a share
+		// name (like "//srv/My Docs") _may_ end up having a space
+		// in the last field of mountinfo (like "unc=//serv/My Docs").
+		// Since kernel 3.10-rc1, cifs option "unc=" is ignored,
+		// so spaces should not appear.
+		//
+		// Check for a separator, and work around the spaces bug
+		for fields[sepIdx] != "-" {
+			sepIdx--
+			if sepIdx == 5 {
+				return nil, fmt.Errorf("Parsing '%s' failed: missing - separator", text)
+			}
+		}
+
+		p := &Info{}
+
+		// Fill in the fields that a filter might check
+		p.Mountpoint, err = strconv.Unquote(`"` + fields[4] + `"`)
+		if err != nil {
+			return nil, fmt.Errorf("Parsing '%s' failed: unable to unquote mount point field: %w", fields[4], err)
+		}
+		p.Fstype = fields[sepIdx+1]
+		p.Source = fields[sepIdx+2]
+		p.VfsOpts = fields[sepIdx+3]
+
+		// Run a filter soon so we can skip parsing/adding entries
+		// the caller is not interested in
+		var skip, stop bool
+		if filter != nil {
+			skip, stop = filter(p)
+			if skip {
+				continue
+			}
+		}
+
+		// Fill in the rest of the fields
+
+		// ignore any numbers parsing errors, as there should not be any
+		p.ID, _ = strconv.Atoi(fields[0])
+		p.Parent, _ = strconv.Atoi(fields[1])
+		mm := strings.Split(fields[2], ":")
+		if len(mm) != 2 {
+			return nil, fmt.Errorf("Parsing '%s' failed: unexpected minor:major pair %s", text, mm)
+		}
+		p.Major, _ = strconv.Atoi(mm[0])
+		p.Minor, _ = strconv.Atoi(mm[1])
+
+		p.Root, err = strconv.Unquote(`"` + fields[3] + `"`)
+		if err != nil {
+			return nil, fmt.Errorf("Parsing '%s' failed: unable to unquote root field: %w", fields[3], err)
+		}
+
+		p.Opts = fields[5]
+
+		// zero or more optional fields
+		switch {
+		case sepIdx == 6:
+			// zero, do nothing
+		case sepIdx == 7:
+			p.Optional = fields[6]
+		default:
+			p.Optional = strings.Join(fields[6:sepIdx-1], " ")
+		}
+
+		out = append(out, p)
+		if stop {
+			break
+		}
+	}
+	return out, nil
+}
+
+// Parse /proc/self/mountinfo because comparing Dev and ino does not work from
+// bind mounts
+func parseMountTable(filter FilterFunc) ([]*Info, error) {
+	f, err := os.Open("/proc/self/mountinfo")
+	if err != nil {
+		return nil, err
+	}
+	defer f.Close()
+
+	return parseInfoFile(f, filter)
+}
+
+// PidMountInfo collects the mounts for a specific process ID. If the process
+// ID is unknown, it is better to use `GetMounts` which will inspect
+// "/proc/self/mountinfo" instead.
+func PidMountInfo(pid int) ([]*Info, error) {
+	f, err := os.Open(fmt.Sprintf("/proc/%d/mountinfo", pid))
+	if err != nil {
+		return nil, err
+	}
+	defer f.Close()
+
+	return parseInfoFile(f, nil)
+}
diff --git a/vendor/github.com/moby/sys/mountinfo/mountinfo_unsupported.go b/vendor/github.com/moby/sys/mountinfo/mountinfo_unsupported.go
new file mode 100644
index 000000000..dc1869211
--- /dev/null
+++ b/vendor/github.com/moby/sys/mountinfo/mountinfo_unsupported.go
@@ -0,0 +1,17 @@
+// +build !windows,!linux,!freebsd freebsd,!cgo
+
+package mountinfo
+
+import (
+	"fmt"
+	"io"
+	"runtime"
+)
+
+func parseMountTable(_ FilterFunc) ([]*Info, error) {
+	return nil, fmt.Errorf("mount.parseMountTable is not implemented on %s/%s", runtime.GOOS, runtime.GOARCH)
+}
+
+func parseInfoFile(_ io.Reader, f FilterFunc) ([]*Info, error) {
+	return parseMountTable(f)
+}
diff --git a/vendor/github.com/moby/sys/mountinfo/mountinfo_windows.go b/vendor/github.com/moby/sys/mountinfo/mountinfo_windows.go
new file mode 100644
index 000000000..69ffdc52b
--- /dev/null
+++ b/vendor/github.com/moby/sys/mountinfo/mountinfo_windows.go
@@ -0,0 +1,12 @@
+package mountinfo
+
+import "io"
+
+func parseMountTable(_ FilterFunc) ([]*Info, error) {
+	// Do NOT return an error!
+	return nil, nil
+}
+
+func parseInfoFile(_ io.Reader, f FilterFunc) ([]*Info, error) {
+	return parseMountTable(f)
+}