new "image" mount type

Add a new "image" mount type to `--mount`.  The source of the mount is
the name or ID of an image.  The destination is the path inside the
container.  Image mounts further support an optional `rw,readwrite`
parameter which if set to "true" will yield the mount writable inside
the container.  Note that no changes are propagated to the image mount
on the host (which in any case is read only).

Mounts are overlay mounts.  To support read-only overlay mounts, vendor
a non-release version of Buildah.

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

16 files changed, 88 insertions, 3695 deletions

diff --git a/vendor/github.com/prometheus/procfs/arp.go b/vendor/github.com/prometheus/procfs/arp.go
deleted file mode 100644
index 916c9182a..000000000
--- a/vendor/github.com/prometheus/procfs/arp.go
+++ /dev/null
@@ -1,85 +0,0 @@
-// Copyright 2019 The Prometheus 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 procfs
-
-import (
-	"fmt"
-	"io/ioutil"
-	"net"
-	"strings"
-)
-
-// ARPEntry contains a single row of the columnar data represented in
-// /proc/net/arp.
-type ARPEntry struct {
-	// IP address
-	IPAddr net.IP
-	// MAC address
-	HWAddr net.HardwareAddr
-	// Name of the device
-	Device string
-}
-
-// GatherARPEntries retrieves all the ARP entries, parse the relevant columns,
-// and then return a slice of ARPEntry's.
-func (fs FS) GatherARPEntries() ([]ARPEntry, error) {
-	data, err := ioutil.ReadFile(fs.proc.Path("net/arp"))
-	if err != nil {
-		return nil, fmt.Errorf("error reading arp %s: %s", fs.proc.Path("net/arp"), err)
-	}
-
-	return parseARPEntries(data)
-}
-
-func parseARPEntries(data []byte) ([]ARPEntry, error) {
-	lines := strings.Split(string(data), "\n")
-	entries := make([]ARPEntry, 0)
-	var err error
-	const (
-		expectedDataWidth   = 6
-		expectedHeaderWidth = 9
-	)
-	for _, line := range lines {
-		columns := strings.Fields(line)
-		width := len(columns)
-
-		if width == expectedHeaderWidth || width == 0 {
-			continue
-		} else if width == expectedDataWidth {
-			entry, err := parseARPEntry(columns)
-			if err != nil {
-				return []ARPEntry{}, fmt.Errorf("failed to parse ARP entry: %s", err)
-			}
-			entries = append(entries, entry)
-		} else {
-			return []ARPEntry{}, fmt.Errorf("%d columns were detected, but %d were expected", width, expectedDataWidth)
-		}
-
-	}
-
-	return entries, err
-}
-
-func parseARPEntry(columns []string) (ARPEntry, error) {
-	ip := net.ParseIP(columns[0])
-	mac := net.HardwareAddr(columns[3])
-
-	entry := ARPEntry{
-		IPAddr: ip,
-		HWAddr: mac,
-		Device: columns[5],
-	}
-
-	return entry, nil
-}
diff --git a/vendor/github.com/prometheus/procfs/buddyinfo.go b/vendor/github.com/prometheus/procfs/buddyinfo.go
index 10bd067a0..63d4229a4 100644
--- a/vendor/github.com/prometheus/procfs/buddyinfo.go
+++ b/vendor/github.com/prometheus/procfs/buddyinfo.go
@@ -31,7 +31,7 @@ type BuddyInfo struct {
 	Sizes []float64
 }
 
-// BuddyInfo reads the buddyinfo statistics from the specified `proc` filesystem.
+// NewBuddyInfo reads the buddyinfo statistics from the specified `proc` filesystem.
 func (fs FS) BuddyInfo() ([]BuddyInfo, error) {
 	file, err := os.Open(fs.proc.Path("buddyinfo"))
 	if err != nil {
diff --git a/vendor/github.com/prometheus/procfs/cpuinfo.go b/vendor/github.com/prometheus/procfs/cpuinfo.go
deleted file mode 100644
index 16491d6ab..000000000
--- a/vendor/github.com/prometheus/procfs/cpuinfo.go
+++ /dev/null
@@ -1,166 +0,0 @@
-// Copyright 2019 The Prometheus 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 procfs
-
-import (
-	"bufio"
-	"bytes"
-	"io/ioutil"
-	"strconv"
-	"strings"
-)
-
-// CPUInfo contains general information about a system CPU found in /proc/cpuinfo
-type CPUInfo struct {
-	Processor       uint
-	VendorID        string
-	CPUFamily       string
-	Model           string
-	ModelName       string
-	Stepping        string
-	Microcode       string
-	CPUMHz          float64
-	CacheSize       string
-	PhysicalID      string
-	Siblings        uint
-	CoreID          string
-	CPUCores        uint
-	APICID          string
-	InitialAPICID   string
-	FPU             string
-	FPUException    string
-	CPUIDLevel      uint
-	WP              string
-	Flags           []string
-	Bugs            []string
-	BogoMips        float64
-	CLFlushSize     uint
-	CacheAlignment  uint
-	AddressSizes    string
-	PowerManagement string
-}
-
-// CPUInfo returns information about current system CPUs.
-// See https://www.kernel.org/doc/Documentation/filesystems/proc.txt
-func (fs FS) CPUInfo() ([]CPUInfo, error) {
-	data, err := ioutil.ReadFile(fs.proc.Path("cpuinfo"))
-	if err != nil {
-		return nil, err
-	}
-	return parseCPUInfo(data)
-}
-
-// parseCPUInfo parses data from /proc/cpuinfo
-func parseCPUInfo(info []byte) ([]CPUInfo, error) {
-	cpuinfo := []CPUInfo{}
-	i := -1
-	scanner := bufio.NewScanner(bytes.NewReader(info))
-	for scanner.Scan() {
-		line := scanner.Text()
-		if strings.TrimSpace(line) == "" {
-			continue
-		}
-		field := strings.SplitN(line, ": ", 2)
-		switch strings.TrimSpace(field[0]) {
-		case "processor":
-			cpuinfo = append(cpuinfo, CPUInfo{}) // start of the next processor
-			i++
-			v, err := strconv.ParseUint(field[1], 0, 32)
-			if err != nil {
-				return nil, err
-			}
-			cpuinfo[i].Processor = uint(v)
-		case "vendor_id":
-			cpuinfo[i].VendorID = field[1]
-		case "cpu family":
-			cpuinfo[i].CPUFamily = field[1]
-		case "model":
-			cpuinfo[i].Model = field[1]
-		case "model name":
-			cpuinfo[i].ModelName = field[1]
-		case "stepping":
-			cpuinfo[i].Stepping = field[1]
-		case "microcode":
-			cpuinfo[i].Microcode = field[1]
-		case "cpu MHz":
-			v, err := strconv.ParseFloat(field[1], 64)
-			if err != nil {
-				return nil, err
-			}
-			cpuinfo[i].CPUMHz = v
-		case "cache size":
-			cpuinfo[i].CacheSize = field[1]
-		case "physical id":
-			cpuinfo[i].PhysicalID = field[1]
-		case "siblings":
-			v, err := strconv.ParseUint(field[1], 0, 32)
-			if err != nil {
-				return nil, err
-			}
-			cpuinfo[i].Siblings = uint(v)
-		case "core id":
-			cpuinfo[i].CoreID = field[1]
-		case "cpu cores":
-			v, err := strconv.ParseUint(field[1], 0, 32)
-			if err != nil {
-				return nil, err
-			}
-			cpuinfo[i].CPUCores = uint(v)
-		case "apicid":
-			cpuinfo[i].APICID = field[1]
-		case "initial apicid":
-			cpuinfo[i].InitialAPICID = field[1]
-		case "fpu":
-			cpuinfo[i].FPU = field[1]
-		case "fpu_exception":
-			cpuinfo[i].FPUException = field[1]
-		case "cpuid level":
-			v, err := strconv.ParseUint(field[1], 0, 32)
-			if err != nil {
-				return nil, err
-			}
-			cpuinfo[i].CPUIDLevel = uint(v)
-		case "wp":
-			cpuinfo[i].WP = field[1]
-		case "flags":
-			cpuinfo[i].Flags = strings.Fields(field[1])
-		case "bugs":
-			cpuinfo[i].Bugs = strings.Fields(field[1])
-		case "bogomips":
-			v, err := strconv.ParseFloat(field[1], 64)
-			if err != nil {
-				return nil, err
-			}
-			cpuinfo[i].BogoMips = v
-		case "clflush size":
-			v, err := strconv.ParseUint(field[1], 0, 32)
-			if err != nil {
-				return nil, err
-			}
-			cpuinfo[i].CLFlushSize = uint(v)
-		case "cache_alignment":
-			v, err := strconv.ParseUint(field[1], 0, 32)
-			if err != nil {
-				return nil, err
-			}
-			cpuinfo[i].CacheAlignment = uint(v)
-		case "address sizes":
-			cpuinfo[i].AddressSizes = field[1]
-		case "power management":
-			cpuinfo[i].PowerManagement = field[1]
-		}
-	}
-	return cpuinfo, nil
-
-}
diff --git a/vendor/github.com/prometheus/procfs/crypto.go b/vendor/github.com/prometheus/procfs/crypto.go
deleted file mode 100644
index 19d4041b2..000000000
--- a/vendor/github.com/prometheus/procfs/crypto.go
+++ /dev/null
@@ -1,131 +0,0 @@
-// Copyright 2019 The Prometheus 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 procfs
-
-import (
-	"bytes"
-	"fmt"
-	"io/ioutil"
-	"strconv"
-	"strings"
-
-	"github.com/prometheus/procfs/internal/util"
-)
-
-// Crypto holds info parsed from /proc/crypto.
-type Crypto struct {
-	Alignmask   *uint64
-	Async       bool
-	Blocksize   *uint64
-	Chunksize   *uint64
-	Ctxsize     *uint64
-	Digestsize  *uint64
-	Driver      string
-	Geniv       string
-	Internal    string
-	Ivsize      *uint64
-	Maxauthsize *uint64
-	MaxKeysize  *uint64
-	MinKeysize  *uint64
-	Module      string
-	Name        string
-	Priority    *int64
-	Refcnt      *int64
-	Seedsize    *uint64
-	Selftest    string
-	Type        string
-	Walksize    *uint64
-}
-
-// Crypto parses an crypto-file (/proc/crypto) and returns a slice of
-// structs containing the relevant info.  More information available here:
-// https://kernel.readthedocs.io/en/sphinx-samples/crypto-API.html
-func (fs FS) Crypto() ([]Crypto, error) {
-	data, err := ioutil.ReadFile(fs.proc.Path("crypto"))
-	if err != nil {
-		return nil, fmt.Errorf("error parsing crypto %s: %s", fs.proc.Path("crypto"), err)
-	}
-	crypto, err := parseCrypto(data)
-	if err != nil {
-		return nil, fmt.Errorf("error parsing crypto %s: %s", fs.proc.Path("crypto"), err)
-	}
-	return crypto, nil
-}
-
-func parseCrypto(cryptoData []byte) ([]Crypto, error) {
-	crypto := []Crypto{}
-
-	cryptoBlocks := bytes.Split(cryptoData, []byte("\n\n"))
-
-	for _, block := range cryptoBlocks {
-		var newCryptoElem Crypto
-
-		lines := strings.Split(string(block), "\n")
-		for _, line := range lines {
-			if strings.TrimSpace(line) == "" || line[0] == ' ' {
-				continue
-			}
-			fields := strings.Split(line, ":")
-			key := strings.TrimSpace(fields[0])
-			value := strings.TrimSpace(fields[1])
-			vp := util.NewValueParser(value)
-
-			switch strings.TrimSpace(key) {
-			case "async":
-				b, err := strconv.ParseBool(value)
-				if err == nil {
-					newCryptoElem.Async = b
-				}
-			case "blocksize":
-				newCryptoElem.Blocksize = vp.PUInt64()
-			case "chunksize":
-				newCryptoElem.Chunksize = vp.PUInt64()
-			case "digestsize":
-				newCryptoElem.Digestsize = vp.PUInt64()
-			case "driver":
-				newCryptoElem.Driver = value
-			case "geniv":
-				newCryptoElem.Geniv = value
-			case "internal":
-				newCryptoElem.Internal = value
-			case "ivsize":
-				newCryptoElem.Ivsize = vp.PUInt64()
-			case "maxauthsize":
-				newCryptoElem.Maxauthsize = vp.PUInt64()
-			case "max keysize":
-				newCryptoElem.MaxKeysize = vp.PUInt64()
-			case "min keysize":
-				newCryptoElem.MinKeysize = vp.PUInt64()
-			case "module":
-				newCryptoElem.Module = value
-			case "name":
-				newCryptoElem.Name = value
-			case "priority":
-				newCryptoElem.Priority = vp.PInt64()
-			case "refcnt":
-				newCryptoElem.Refcnt = vp.PInt64()
-			case "seedsize":
-				newCryptoElem.Seedsize = vp.PUInt64()
-			case "selftest":
-				newCryptoElem.Selftest = value
-			case "type":
-				newCryptoElem.Type = value
-			case "walksize":
-				newCryptoElem.Walksize = vp.PUInt64()
-			}
-		}
-		crypto = append(crypto, newCryptoElem)
-	}
-	return crypto, nil
-}
diff --git a/vendor/github.com/prometheus/procfs/fixtures.ttar b/vendor/github.com/prometheus/procfs/fixtures.ttar
index 0b2905544..6b42e7ba1 100644
--- a/vendor/github.com/prometheus/procfs/fixtures.ttar
+++ b/vendor/github.com/prometheus/procfs/fixtures.ttar
@@ -47,48 +47,6 @@ SymlinkTo: ../../symlinktargets/ghi
 Path: fixtures/proc/26231/fd/3
 SymlinkTo: ../../symlinktargets/uvw
 # ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-Directory: fixtures/proc/26231/fdinfo
-Mode: 755
-# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-Path: fixtures/proc/26231/fdinfo/0
-Lines: 6
-pos:	0
-flags:	02004000
-mnt_id:	13
-inotify wd:3 ino:1 sdev:34 mask:fce ignored_mask:0 fhandle-bytes:c fhandle-type:81 f_handle:000000000100000000000000
-inotify wd:2 ino:1300016 sdev:fd00002 mask:fce ignored_mask:0 fhandle-bytes:8 fhandle-type:1 f_handle:16003001ed3f022a
-inotify wd:1 ino:2e0001 sdev:fd00000 mask:fce ignored_mask:0 fhandle-bytes:8 fhandle-type:1 f_handle:01002e00138e7c65
-Mode: 644
-# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-Path: fixtures/proc/26231/fdinfo/1
-Lines: 4
-pos:	0
-flags:	02004002
-mnt_id:	13
-eventfd-count:                0
-Mode: 644
-# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-Path: fixtures/proc/26231/fdinfo/10
-Lines: 3
-pos:	0
-flags:	02004002
-mnt_id:	9
-Mode: 400
-# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-Path: fixtures/proc/26231/fdinfo/2
-Lines: 3
-pos:	0
-flags:	02004002
-mnt_id:	9
-Mode: 400
-# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-Path: fixtures/proc/26231/fdinfo/3
-Lines: 3
-pos:	0
-flags:	02004002
-mnt_id:	9
-Mode: 400
-# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 Path: fixtures/proc/26231/io
 Lines: 7
 rchar: 750339
@@ -168,11 +126,6 @@ SymlinkTo: net:[4026531993]
 Path: fixtures/proc/26231/root
 SymlinkTo: /
 # ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-Path: fixtures/proc/26231/schedstat
-Lines: 1
-411605849 93680043 79
-Mode: 644
-# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 Path: fixtures/proc/26231/stat
 Lines: 1
 26231 (vim) R 5392 7446 5392 34835 7446 4218880 32533 309516 26 82 1677 44 158 99 20 0 1 0 82375 56274944 1981 18446744073709551615 4194304 6294284 140736914091744 140736914087944 139965136429984 0 0 12288 1870679807 0 0 0 17 0 0 0 31 0 0 8391624 8481048 16420864 140736914093252 140736914093279 140736914093279 140736914096107 0
@@ -184,10 +137,10 @@ Lines: 53
 Name:	prometheus
 Umask:	0022
 State:	S (sleeping)
-Tgid:	26231
+Tgid:	1
 Ngid:	0
-Pid:	26231
-PPid:	1
+Pid:	1
+PPid:	0
 TracerPid:	0
 Uid:	0	0	0	0
 Gid:	0	0	0	0
@@ -305,18 +258,6 @@ Lines: 1
 com.github.uiautomatorNULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTENULLBYTEEOF
 Mode: 644
 # ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-Path: fixtures/proc/26233/schedstat
-Lines: 8
- ____________________________________
-< this is a malformed schedstat file >
- ------------------------------------
-        \   ^__^
-         \  (oo)\_______
-            (__)\       )\/\
-                ||----w |
-                ||     ||
-Mode: 644
-# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 Directory: fixtures/proc/584
 Mode: 755
 # ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
@@ -333,1201 +274,6 @@ Node 0, zone    DMA32    759    572    791    475    194     45     12      0
 Node 0, zone   Normal   4381   1093    185   1530    567    102      4      0      0      0      0
 Mode: 644
 # ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-Path: fixtures/proc/cpuinfo
-Lines: 216
-processor	: 0
-vendor_id	: GenuineIntel
-cpu family	: 6
-model		: 142
-model name	: Intel(R) Core(TM) i7-8650U CPU @ 1.90GHz
-stepping	: 10
-microcode	: 0xb4
-cpu MHz		: 799.998
-cache size	: 8192 KB
-physical id	: 0
-siblings	: 8
-core id		: 0
-cpu cores	: 4
-apicid		: 0
-initial apicid	: 0
-fpu		: yes
-fpu_exception	: yes
-cpuid level	: 22
-wp		: yes
-flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf tsc_known_freq pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb invpcid_single pti ssbd ibrs ibpb stibp tpr_shadow vnmi flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm mpx rdseed adx smap clflushopt intel_pt xsaveopt xsavec xgetbv1 xsaves dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp md_clear flush_l1d
-bugs		: cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass l1tf mds swapgs
-bogomips	: 4224.00
-clflush size	: 64
-cache_alignment	: 64
-address sizes	: 39 bits physical, 48 bits virtual
-power management:
-
-processor	: 1
-vendor_id	: GenuineIntel
-cpu family	: 6
-model		: 142
-model name	: Intel(R) Core(TM) i7-8650U CPU @ 1.90GHz
-stepping	: 10
-microcode	: 0xb4
-cpu MHz		: 800.037
-cache size	: 8192 KB
-physical id	: 0
-siblings	: 8
-core id		: 1
-cpu cores	: 4
-apicid		: 2
-initial apicid	: 2
-fpu		: yes
-fpu_exception	: yes
-cpuid level	: 22
-wp		: yes
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 Directory: fixtures/sys/devices/rbd
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 # ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
@@ -3615,52 +1500,6 @@ Mode: 775
 Path: fixtures/sys/devices/system/cpu/cpu0/cpufreq
 SymlinkTo: ../cpufreq/policy0
 # ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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 Directory: fixtures/sys/devices/system/cpu/cpu1
 Mode: 775
 # ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
@@ -3722,52 +1561,6 @@ Lines: 1
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 Mode: 664
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 Directory: fixtures/sys/devices/system/cpu/cpufreq
 Mode: 775
 # ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
diff --git a/vendor/github.com/prometheus/procfs/internal/util/parse.go b/vendor/github.com/prometheus/procfs/internal/util/parse.go
deleted file mode 100644
index 755591d9a..000000000
--- a/vendor/github.com/prometheus/procfs/internal/util/parse.go
+++ /dev/null
@@ -1,88 +0,0 @@
-// Copyright 2018 The Prometheus 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 util
-
-import (
-	"io/ioutil"
-	"strconv"
-	"strings"
-)
-
-// ParseUint32s parses a slice of strings into a slice of uint32s.
-func ParseUint32s(ss []string) ([]uint32, error) {
-	us := make([]uint32, 0, len(ss))
-	for _, s := range ss {
-		u, err := strconv.ParseUint(s, 10, 32)
-		if err != nil {
-			return nil, err
-		}
-
-		us = append(us, uint32(u))
-	}
-
-	return us, nil
-}
-
-// ParseUint64s parses a slice of strings into a slice of uint64s.
-func ParseUint64s(ss []string) ([]uint64, error) {
-	us := make([]uint64, 0, len(ss))
-	for _, s := range ss {
-		u, err := strconv.ParseUint(s, 10, 64)
-		if err != nil {
-			return nil, err
-		}
-
-		us = append(us, u)
-	}
-
-	return us, nil
-}
-
-// ParsePInt64s parses a slice of strings into a slice of int64 pointers.
-func ParsePInt64s(ss []string) ([]*int64, error) {
-	us := make([]*int64, 0, len(ss))
-	for _, s := range ss {
-		u, err := strconv.ParseInt(s, 10, 64)
-		if err != nil {
-			return nil, err
-		}
-
-		us = append(us, &u)
-	}
-
-	return us, nil
-}
-
-// ReadUintFromFile reads a file and attempts to parse a uint64 from it.
-func ReadUintFromFile(path string) (uint64, error) {
-	data, err := ioutil.ReadFile(path)
-	if err != nil {
-		return 0, err
-	}
-	return strconv.ParseUint(strings.TrimSpace(string(data)), 10, 64)
-}
-
-// ParseBool parses a string into a boolean pointer.
-func ParseBool(b string) *bool {
-	var truth bool
-	switch b {
-	case "enabled":
-		truth = true
-	case "disabled":
-		truth = false
-	default:
-		return nil
-	}
-	return &truth
-}
diff --git a/vendor/github.com/prometheus/procfs/internal/util/sysreadfile.go b/vendor/github.com/prometheus/procfs/internal/util/sysreadfile.go
deleted file mode 100644
index 68b37c4b3..000000000
--- a/vendor/github.com/prometheus/procfs/internal/util/sysreadfile.go
+++ /dev/null
@@ -1,45 +0,0 @@
-// Copyright 2018 The Prometheus 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.
-
-// +build linux,!appengine
-
-package util
-
-import (
-	"bytes"
-	"os"
-	"syscall"
-)
-
-// SysReadFile is a simplified ioutil.ReadFile that invokes syscall.Read directly.
-// https://github.com/prometheus/node_exporter/pull/728/files
-func SysReadFile(file string) (string, error) {
-	f, err := os.Open(file)
-	if err != nil {
-		return "", err
-	}
-	defer f.Close()
-
-	// On some machines, hwmon drivers are broken and return EAGAIN.  This causes
-	// Go's ioutil.ReadFile implementation to poll forever.
-	//
-	// Since we either want to read data or bail immediately, do the simplest
-	// possible read using syscall directly.
-	b := make([]byte, 128)
-	n, err := syscall.Read(int(f.Fd()), b)
-	if err != nil {
-		return "", err
-	}
-
-	return string(bytes.TrimSpace(b[:n])), nil
-}
diff --git a/vendor/github.com/prometheus/procfs/internal/util/sysreadfile_compat.go b/vendor/github.com/prometheus/procfs/internal/util/sysreadfile_compat.go
deleted file mode 100644
index bd55b4537..000000000
--- a/vendor/github.com/prometheus/procfs/internal/util/sysreadfile_compat.go
+++ /dev/null
@@ -1,26 +0,0 @@
-// Copyright 2019 The Prometheus 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.
-
-// +build linux,appengine !linux
-
-package util
-
-import (
-	"fmt"
-)
-
-// SysReadFile is here implemented as a noop for builds that do not support
-// the read syscall. For example Windows, or Linux on Google App Engine.
-func SysReadFile(file string) (string, error) {
-	return "", fmt.Errorf("not supported on this platform")
-}
diff --git a/vendor/github.com/prometheus/procfs/internal/util/valueparser.go b/vendor/github.com/prometheus/procfs/internal/util/valueparser.go
deleted file mode 100644
index ac93cb42d..000000000
--- a/vendor/github.com/prometheus/procfs/internal/util/valueparser.go
+++ /dev/null
@@ -1,77 +0,0 @@
-// Copyright 2019 The Prometheus 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 util
-
-import (
-	"strconv"
-)
-
-// TODO(mdlayher): util packages are an anti-pattern and this should be moved
-// somewhere else that is more focused in the future.
-
-// A ValueParser enables parsing a single string into a variety of data types
-// in a concise and safe way. The Err method must be invoked after invoking
-// any other methods to ensure a value was successfully parsed.
-type ValueParser struct {
-	v   string
-	err error
-}
-
-// NewValueParser creates a ValueParser using the input string.
-func NewValueParser(v string) *ValueParser {
-	return &ValueParser{v: v}
-}
-
-// PInt64 interprets the underlying value as an int64 and returns a pointer to
-// that value.
-func (vp *ValueParser) PInt64() *int64 {
-	if vp.err != nil {
-		return nil
-	}
-
-	// A base value of zero makes ParseInt infer the correct base using the
-	// string's prefix, if any.
-	const base = 0
-	v, err := strconv.ParseInt(vp.v, base, 64)
-	if err != nil {
-		vp.err = err
-		return nil
-	}
-
-	return &v
-}
-
-// PUInt64 interprets the underlying value as an uint64 and returns a pointer to
-// that value.
-func (vp *ValueParser) PUInt64() *uint64 {
-	if vp.err != nil {
-		return nil
-	}
-
-	// A base value of zero makes ParseInt infer the correct base using the
-	// string's prefix, if any.
-	const base = 0
-	v, err := strconv.ParseUint(vp.v, base, 64)
-	if err != nil {
-		vp.err = err
-		return nil
-	}
-
-	return &v
-}
-
-// Err returns the last error, if any, encountered by the ValueParser.
-func (vp *ValueParser) Err() error {
-	return vp.err
-}
diff --git a/vendor/github.com/prometheus/procfs/net_softnet.go b/vendor/github.com/prometheus/procfs/net_softnet.go
deleted file mode 100644
index 6fcad20af..000000000
--- a/vendor/github.com/prometheus/procfs/net_softnet.go
+++ /dev/null
@@ -1,91 +0,0 @@
-// Copyright 2019 The Prometheus 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 procfs
-
-import (
-	"fmt"
-	"io/ioutil"
-	"strconv"
-	"strings"
-)
-
-// For the proc file format details,
-// see https://elixir.bootlin.com/linux/v4.17/source/net/core/net-procfs.c#L162
-// and https://elixir.bootlin.com/linux/v4.17/source/include/linux/netdevice.h#L2810.
-
-// SoftnetEntry contains a single row of data from /proc/net/softnet_stat
-type SoftnetEntry struct {
-	// Number of processed packets
-	Processed uint
-	// Number of dropped packets
-	Dropped uint
-	// Number of times processing packets ran out of quota
-	TimeSqueezed uint
-}
-
-// GatherSoftnetStats reads /proc/net/softnet_stat, parse the relevant columns,
-// and then return a slice of SoftnetEntry's.
-func (fs FS) GatherSoftnetStats() ([]SoftnetEntry, error) {
-	data, err := ioutil.ReadFile(fs.proc.Path("net/softnet_stat"))
-	if err != nil {
-		return nil, fmt.Errorf("error reading softnet %s: %s", fs.proc.Path("net/softnet_stat"), err)
-	}
-
-	return parseSoftnetEntries(data)
-}
-
-func parseSoftnetEntries(data []byte) ([]SoftnetEntry, error) {
-	lines := strings.Split(string(data), "\n")
-	entries := make([]SoftnetEntry, 0)
-	var err error
-	const (
-		expectedColumns = 11
-	)
-	for _, line := range lines {
-		columns := strings.Fields(line)
-		width := len(columns)
-		if width == 0 {
-			continue
-		}
-		if width != expectedColumns {
-			return []SoftnetEntry{}, fmt.Errorf("%d columns were detected, but %d were expected", width, expectedColumns)
-		}
-		var entry SoftnetEntry
-		if entry, err = parseSoftnetEntry(columns); err != nil {
-			return []SoftnetEntry{}, err
-		}
-		entries = append(entries, entry)
-	}
-
-	return entries, nil
-}
-
-func parseSoftnetEntry(columns []string) (SoftnetEntry, error) {
-	var err error
-	var processed, dropped, timeSqueezed uint64
-	if processed, err = strconv.ParseUint(columns[0], 16, 32); err != nil {
-		return SoftnetEntry{}, fmt.Errorf("Unable to parse column 0: %s", err)
-	}
-	if dropped, err = strconv.ParseUint(columns[1], 16, 32); err != nil {
-		return SoftnetEntry{}, fmt.Errorf("Unable to parse column 1: %s", err)
-	}
-	if timeSqueezed, err = strconv.ParseUint(columns[2], 16, 32); err != nil {
-		return SoftnetEntry{}, fmt.Errorf("Unable to parse column 2: %s", err)
-	}
-	return SoftnetEntry{
-		Processed:    uint(processed),
-		Dropped:      uint(dropped),
-		TimeSqueezed: uint(timeSqueezed),
-	}, nil
-}
diff --git a/vendor/github.com/prometheus/procfs/proc.go b/vendor/github.com/prometheus/procfs/proc.go
index b7c79cf77..41c148d06 100644
--- a/vendor/github.com/prometheus/procfs/proc.go
+++ b/vendor/github.com/prometheus/procfs/proc.go
@@ -279,33 +279,3 @@ func (p Proc) fileDescriptors() ([]string, error) {
 func (p Proc) path(pa ...string) string {
 	return p.fs.Path(append([]string{strconv.Itoa(p.PID)}, pa...)...)
 }
-
-// FileDescriptorsInfo retrieves information about all file descriptors of
-// the process.
-func (p Proc) FileDescriptorsInfo() (ProcFDInfos, error) {
-	names, err := p.fileDescriptors()
-	if err != nil {
-		return nil, err
-	}
-
-	var fdinfos ProcFDInfos
-
-	for _, n := range names {
-		fdinfo, err := p.FDInfo(n)
-		if err != nil {
-			continue
-		}
-		fdinfos = append(fdinfos, *fdinfo)
-	}
-
-	return fdinfos, nil
-}
-
-// Schedstat returns task scheduling information for the process.
-func (p Proc) Schedstat() (ProcSchedstat, error) {
-	contents, err := ioutil.ReadFile(p.path("schedstat"))
-	if err != nil {
-		return ProcSchedstat{}, err
-	}
-	return parseProcSchedstat(string(contents))
-}
diff --git a/vendor/github.com/prometheus/procfs/proc_fdinfo.go b/vendor/github.com/prometheus/procfs/proc_fdinfo.go
deleted file mode 100644
index 83b67d1bd..000000000
--- a/vendor/github.com/prometheus/procfs/proc_fdinfo.go
+++ /dev/null
@@ -1,132 +0,0 @@
-// Copyright 2019 The Prometheus 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 procfs
-
-import (
-	"bufio"
-	"fmt"
-	"io/ioutil"
-	"os"
-	"regexp"
-	"strings"
-)
-
-// Regexp variables
-var (
-	rPos     = regexp.MustCompile(`^pos:\s+(\d+)$`)
-	rFlags   = regexp.MustCompile(`^flags:\s+(\d+)$`)
-	rMntID   = regexp.MustCompile(`^mnt_id:\s+(\d+)$`)
-	rInotify = regexp.MustCompile(`^inotify`)
-)
-
-// ProcFDInfo contains represents file descriptor information.
-type ProcFDInfo struct {
-	// File descriptor
-	FD string
-	// File offset
-	Pos string
-	// File access mode and status flags
-	Flags string
-	// Mount point ID
-	MntID string
-	// List of inotify lines (structed) in the fdinfo file (kernel 3.8+ only)
-	InotifyInfos []InotifyInfo
-}
-
-// FDInfo constructor. On kernels older than 3.8, InotifyInfos will always be empty.
-func (p Proc) FDInfo(fd string) (*ProcFDInfo, error) {
-	f, err := os.Open(p.path("fdinfo", fd))
-	if err != nil {
-		return nil, err
-	}
-	defer f.Close()
-
-	fdinfo, err := ioutil.ReadAll(f)
-	if err != nil {
-		return nil, fmt.Errorf("could not read %s: %s", f.Name(), err)
-	}
-
-	var text, pos, flags, mntid string
-	var inotify []InotifyInfo
-
-	scanner := bufio.NewScanner(strings.NewReader(string(fdinfo)))
-	for scanner.Scan() {
-		text = scanner.Text()
-		if rPos.MatchString(text) {
-			pos = rPos.FindStringSubmatch(text)[1]
-		} else if rFlags.MatchString(text) {
-			flags = rFlags.FindStringSubmatch(text)[1]
-		} else if rMntID.MatchString(text) {
-			mntid = rMntID.FindStringSubmatch(text)[1]
-		} else if rInotify.MatchString(text) {
-			newInotify, err := parseInotifyInfo(text)
-			if err != nil {
-				return nil, err
-			}
-			inotify = append(inotify, *newInotify)
-		}
-	}
-
-	i := &ProcFDInfo{
-		FD:           fd,
-		Pos:          pos,
-		Flags:        flags,
-		MntID:        mntid,
-		InotifyInfos: inotify,
-	}
-
-	return i, nil
-}
-
-// InotifyInfo represents a single inotify line in the fdinfo file.
-type InotifyInfo struct {
-	// Watch descriptor number
-	WD string
-	// Inode number
-	Ino string
-	// Device ID
-	Sdev string
-	// Mask of events being monitored
-	Mask string
-}
-
-// InotifyInfo constructor. Only available on kernel 3.8+.
-func parseInotifyInfo(line string) (*InotifyInfo, error) {
-	r := regexp.MustCompile(`^inotify\s+wd:([0-9a-f]+)\s+ino:([0-9a-f]+)\s+sdev:([0-9a-f]+)\s+mask:([0-9a-f]+)`)
-	m := r.FindStringSubmatch(line)
-	i := &InotifyInfo{
-		WD:   m[1],
-		Ino:  m[2],
-		Sdev: m[3],
-		Mask: m[4],
-	}
-	return i, nil
-}
-
-// ProcFDInfos represents a list of ProcFDInfo structs.
-type ProcFDInfos []ProcFDInfo
-
-func (p ProcFDInfos) Len() int           { return len(p) }
-func (p ProcFDInfos) Swap(i, j int)      { p[i], p[j] = p[j], p[i] }
-func (p ProcFDInfos) Less(i, j int) bool { return p[i].FD < p[j].FD }
-
-// InotifyWatchLen returns the total number of inotify watches
-func (p ProcFDInfos) InotifyWatchLen() (int, error) {
-	length := 0
-	for _, f := range p {
-		length += len(f.InotifyInfos)
-	}
-
-	return length, nil
-}
diff --git a/vendor/github.com/prometheus/procfs/proc_status.go b/vendor/github.com/prometheus/procfs/proc_status.go
index ad290fae7..6b4b61f71 100644
--- a/vendor/github.com/prometheus/procfs/proc_status.go
+++ b/vendor/github.com/prometheus/procfs/proc_status.go
@@ -21,7 +21,7 @@ import (
 	"strings"
 )
 
-// ProcStatus provides status information about the process,
+// ProcStat provides status information about the process,
 // read from /proc/[pid]/stat.
 type ProcStatus struct {
 	// The process ID.
@@ -29,9 +29,6 @@ type ProcStatus struct {
 	// The process name.
 	Name string
 
-	// Thread group ID.
-	TGID int
-
 	// Peak virtual memory size.
 	VmPeak uint64
 	// Virtual memory size.
@@ -116,8 +113,6 @@ func (p Proc) NewStatus() (ProcStatus, error) {
 
 func (s *ProcStatus) fillStatus(k string, vString string, vUint uint64, vUintBytes uint64) {
 	switch k {
-	case "Tgid":
-		s.TGID = int(vUint)
 	case "Name":
 		s.Name = vString
 	case "VmPeak":
diff --git a/vendor/github.com/prometheus/procfs/schedstat.go b/vendor/github.com/prometheus/procfs/schedstat.go
deleted file mode 100644
index a4c4089ac..000000000
--- a/vendor/github.com/prometheus/procfs/schedstat.go
+++ /dev/null
@@ -1,118 +0,0 @@
-// Copyright 2019 The Prometheus 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 procfs
-
-import (
-	"bufio"
-	"errors"
-	"os"
-	"regexp"
-	"strconv"
-)
-
-var (
-	cpuLineRE  = regexp.MustCompile(`cpu(\d+) (\d+) (\d+) (\d+) (\d+) (\d+) (\d+) (\d+) (\d+) (\d+)`)
-	procLineRE = regexp.MustCompile(`(\d+) (\d+) (\d+)`)
-)
-
-// Schedstat contains scheduler statistics from /proc/schedstat
-//
-// See
-// https://www.kernel.org/doc/Documentation/scheduler/sched-stats.txt
-// for a detailed description of what these numbers mean.
-//
-// Note the current kernel documentation claims some of the time units are in
-// jiffies when they are actually in nanoseconds since 2.6.23 with the
-// introduction of CFS. A fix to the documentation is pending. See
-// https://lore.kernel.org/patchwork/project/lkml/list/?series=403473
-type Schedstat struct {
-	CPUs []*SchedstatCPU
-}
-
-// SchedstatCPU contains the values from one "cpu<N>" line
-type SchedstatCPU struct {
-	CPUNum string
-
-	RunningNanoseconds uint64
-	WaitingNanoseconds uint64
-	RunTimeslices      uint64
-}
-
-// ProcSchedstat contains the values from /proc/<pid>/schedstat
-type ProcSchedstat struct {
-	RunningNanoseconds uint64
-	WaitingNanoseconds uint64
-	RunTimeslices      uint64
-}
-
-// Schedstat reads data from /proc/schedstat
-func (fs FS) Schedstat() (*Schedstat, error) {
-	file, err := os.Open(fs.proc.Path("schedstat"))
-	if err != nil {
-		return nil, err
-	}
-	defer file.Close()
-
-	stats := &Schedstat{}
-	scanner := bufio.NewScanner(file)
-
-	for scanner.Scan() {
-		match := cpuLineRE.FindStringSubmatch(scanner.Text())
-		if match != nil {
-			cpu := &SchedstatCPU{}
-			cpu.CPUNum = match[1]
-
-			cpu.RunningNanoseconds, err = strconv.ParseUint(match[8], 10, 64)
-			if err != nil {
-				continue
-			}
-
-			cpu.WaitingNanoseconds, err = strconv.ParseUint(match[9], 10, 64)
-			if err != nil {
-				continue
-			}
-
-			cpu.RunTimeslices, err = strconv.ParseUint(match[10], 10, 64)
-			if err != nil {
-				continue
-			}
-
-			stats.CPUs = append(stats.CPUs, cpu)
-		}
-	}
-
-	return stats, nil
-}
-
-func parseProcSchedstat(contents string) (stats ProcSchedstat, err error) {
-	match := procLineRE.FindStringSubmatch(contents)
-
-	if match != nil {
-		stats.RunningNanoseconds, err = strconv.ParseUint(match[1], 10, 64)
-		if err != nil {
-			return
-		}
-
-		stats.WaitingNanoseconds, err = strconv.ParseUint(match[2], 10, 64)
-		if err != nil {
-			return
-		}
-
-		stats.RunTimeslices, err = strconv.ParseUint(match[3], 10, 64)
-		return
-	}
-
-	err = errors.New("could not parse schedstat")
-	return
-}
diff --git a/vendor/github.com/prometheus/procfs/vm.go b/vendor/github.com/prometheus/procfs/vm.go
deleted file mode 100644
index cb1389141..000000000
--- a/vendor/github.com/prometheus/procfs/vm.go
+++ /dev/null
@@ -1,210 +0,0 @@
-// Copyright 2019 The Prometheus 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.
-
-// +build !windows
-
-package procfs
-
-import (
-	"fmt"
-	"io/ioutil"
-	"os"
-	"path/filepath"
-	"strings"
-
-	"github.com/prometheus/procfs/internal/util"
-)
-
-// The VM interface is described at
-//   https://www.kernel.org/doc/Documentation/sysctl/vm.txt
-// Each setting is exposed as a single file.
-// Each file contains one line with a single numerical value, except lowmem_reserve_ratio which holds an array
-// and numa_zonelist_order (deprecated) which is a string
-type VM struct {
-	AdminReserveKbytes        *int64   // /proc/sys/vm/admin_reserve_kbytes
-	BlockDump                 *int64   // /proc/sys/vm/block_dump
-	CompactUnevictableAllowed *int64   // /proc/sys/vm/compact_unevictable_allowed
-	DirtyBackgroundBytes      *int64   // /proc/sys/vm/dirty_background_bytes
-	DirtyBackgroundRatio      *int64   // /proc/sys/vm/dirty_background_ratio
-	DirtyBytes                *int64   // /proc/sys/vm/dirty_bytes
-	DirtyExpireCentisecs      *int64   // /proc/sys/vm/dirty_expire_centisecs
-	DirtyRatio                *int64   // /proc/sys/vm/dirty_ratio
-	DirtytimeExpireSeconds    *int64   // /proc/sys/vm/dirtytime_expire_seconds
-	DirtyWritebackCentisecs   *int64   // /proc/sys/vm/dirty_writeback_centisecs
-	DropCaches                *int64   // /proc/sys/vm/drop_caches
-	ExtfragThreshold          *int64   // /proc/sys/vm/extfrag_threshold
-	HugetlbShmGroup           *int64   // /proc/sys/vm/hugetlb_shm_group
-	LaptopMode                *int64   // /proc/sys/vm/laptop_mode
-	LegacyVaLayout            *int64   // /proc/sys/vm/legacy_va_layout
-	LowmemReserveRatio        []*int64 // /proc/sys/vm/lowmem_reserve_ratio
-	MaxMapCount               *int64   // /proc/sys/vm/max_map_count
-	MemoryFailureEarlyKill    *int64   // /proc/sys/vm/memory_failure_early_kill
-	MemoryFailureRecovery     *int64   // /proc/sys/vm/memory_failure_recovery
-	MinFreeKbytes             *int64   // /proc/sys/vm/min_free_kbytes
-	MinSlabRatio              *int64   // /proc/sys/vm/min_slab_ratio
-	MinUnmappedRatio          *int64   // /proc/sys/vm/min_unmapped_ratio
-	MmapMinAddr               *int64   // /proc/sys/vm/mmap_min_addr
-	NrHugepages               *int64   // /proc/sys/vm/nr_hugepages
-	NrHugepagesMempolicy      *int64   // /proc/sys/vm/nr_hugepages_mempolicy
-	NrOvercommitHugepages     *int64   // /proc/sys/vm/nr_overcommit_hugepages
-	NumaStat                  *int64   // /proc/sys/vm/numa_stat
-	NumaZonelistOrder         string   // /proc/sys/vm/numa_zonelist_order
-	OomDumpTasks              *int64   // /proc/sys/vm/oom_dump_tasks
-	OomKillAllocatingTask     *int64   // /proc/sys/vm/oom_kill_allocating_task
-	OvercommitKbytes          *int64   // /proc/sys/vm/overcommit_kbytes
-	OvercommitMemory          *int64   // /proc/sys/vm/overcommit_memory
-	OvercommitRatio           *int64   // /proc/sys/vm/overcommit_ratio
-	PageCluster               *int64   // /proc/sys/vm/page-cluster
-	PanicOnOom                *int64   // /proc/sys/vm/panic_on_oom
-	PercpuPagelistFraction    *int64   // /proc/sys/vm/percpu_pagelist_fraction
-	StatInterval              *int64   // /proc/sys/vm/stat_interval
-	Swappiness                *int64   // /proc/sys/vm/swappiness
-	UserReserveKbytes         *int64   // /proc/sys/vm/user_reserve_kbytes
-	VfsCachePressure          *int64   // /proc/sys/vm/vfs_cache_pressure
-	WatermarkBoostFactor      *int64   // /proc/sys/vm/watermark_boost_factor
-	WatermarkScaleFactor      *int64   // /proc/sys/vm/watermark_scale_factor
-	ZoneReclaimMode           *int64   // /proc/sys/vm/zone_reclaim_mode
-}
-
-// VM reads the VM statistics from the specified `proc` filesystem.
-func (fs FS) VM() (*VM, error) {
-	path := fs.proc.Path("sys/vm")
-	file, err := os.Stat(path)
-	if err != nil {
-		return nil, err
-	}
-	if !file.Mode().IsDir() {
-		return nil, fmt.Errorf("%s is not a directory", path)
-	}
-
-	files, err := ioutil.ReadDir(path)
-	if err != nil {
-		return nil, err
-	}
-
-	var vm VM
-	for _, f := range files {
-		if f.IsDir() {
-			continue
-		}
-
-		name := filepath.Join(path, f.Name())
-		// ignore errors on read, as there are some write only
-		// in /proc/sys/vm
-		value, err := util.SysReadFile(name)
-		if err != nil {
-			continue
-		}
-		vp := util.NewValueParser(value)
-
-		switch f.Name() {
-		case "admin_reserve_kbytes":
-			vm.AdminReserveKbytes = vp.PInt64()
-		case "block_dump":
-			vm.BlockDump = vp.PInt64()
-		case "compact_unevictable_allowed":
-			vm.CompactUnevictableAllowed = vp.PInt64()
-		case "dirty_background_bytes":
-			vm.DirtyBackgroundBytes = vp.PInt64()
-		case "dirty_background_ratio":
-			vm.DirtyBackgroundRatio = vp.PInt64()
-		case "dirty_bytes":
-			vm.DirtyBytes = vp.PInt64()
-		case "dirty_expire_centisecs":
-			vm.DirtyExpireCentisecs = vp.PInt64()
-		case "dirty_ratio":
-			vm.DirtyRatio = vp.PInt64()
-		case "dirtytime_expire_seconds":
-			vm.DirtytimeExpireSeconds = vp.PInt64()
-		case "dirty_writeback_centisecs":
-			vm.DirtyWritebackCentisecs = vp.PInt64()
-		case "drop_caches":
-			vm.DropCaches = vp.PInt64()
-		case "extfrag_threshold":
-			vm.ExtfragThreshold = vp.PInt64()
-		case "hugetlb_shm_group":
-			vm.HugetlbShmGroup = vp.PInt64()
-		case "laptop_mode":
-			vm.LaptopMode = vp.PInt64()
-		case "legacy_va_layout":
-			vm.LegacyVaLayout = vp.PInt64()
-		case "lowmem_reserve_ratio":
-			stringSlice := strings.Fields(value)
-			pint64Slice := make([]*int64, 0, len(stringSlice))
-			for _, value := range stringSlice {
-				vp := util.NewValueParser(value)
-				pint64Slice = append(pint64Slice, vp.PInt64())
-			}
-			vm.LowmemReserveRatio = pint64Slice
-		case "max_map_count":
-			vm.MaxMapCount = vp.PInt64()
-		case "memory_failure_early_kill":
-			vm.MemoryFailureEarlyKill = vp.PInt64()
-		case "memory_failure_recovery":
-			vm.MemoryFailureRecovery = vp.PInt64()
-		case "min_free_kbytes":
-			vm.MinFreeKbytes = vp.PInt64()
-		case "min_slab_ratio":
-			vm.MinSlabRatio = vp.PInt64()
-		case "min_unmapped_ratio":
-			vm.MinUnmappedRatio = vp.PInt64()
-		case "mmap_min_addr":
-			vm.MmapMinAddr = vp.PInt64()
-		case "nr_hugepages":
-			vm.NrHugepages = vp.PInt64()
-		case "nr_hugepages_mempolicy":
-			vm.NrHugepagesMempolicy = vp.PInt64()
-		case "nr_overcommit_hugepages":
-			vm.NrOvercommitHugepages = vp.PInt64()
-		case "numa_stat":
-			vm.NumaStat = vp.PInt64()
-		case "numa_zonelist_order":
-			vm.NumaZonelistOrder = value
-		case "oom_dump_tasks":
-			vm.OomDumpTasks = vp.PInt64()
-		case "oom_kill_allocating_task":
-			vm.OomKillAllocatingTask = vp.PInt64()
-		case "overcommit_kbytes":
-			vm.OvercommitKbytes = vp.PInt64()
-		case "overcommit_memory":
-			vm.OvercommitMemory = vp.PInt64()
-		case "overcommit_ratio":
-			vm.OvercommitRatio = vp.PInt64()
-		case "page-cluster":
-			vm.PageCluster = vp.PInt64()
-		case "panic_on_oom":
-			vm.PanicOnOom = vp.PInt64()
-		case "percpu_pagelist_fraction":
-			vm.PercpuPagelistFraction = vp.PInt64()
-		case "stat_interval":
-			vm.StatInterval = vp.PInt64()
-		case "swappiness":
-			vm.Swappiness = vp.PInt64()
-		case "user_reserve_kbytes":
-			vm.UserReserveKbytes = vp.PInt64()
-		case "vfs_cache_pressure":
-			vm.VfsCachePressure = vp.PInt64()
-		case "watermark_boost_factor":
-			vm.WatermarkBoostFactor = vp.PInt64()
-		case "watermark_scale_factor":
-			vm.WatermarkScaleFactor = vp.PInt64()
-		case "zone_reclaim_mode":
-			vm.ZoneReclaimMode = vp.PInt64()
-		}
-		if err := vp.Err(); err != nil {
-			return nil, err
-		}
-	}
-
-	return &vm, nil
-}
diff --git a/vendor/github.com/prometheus/procfs/zoneinfo.go b/vendor/github.com/prometheus/procfs/zoneinfo.go
deleted file mode 100644
index e941503d5..000000000
--- a/vendor/github.com/prometheus/procfs/zoneinfo.go
+++ /dev/null
@@ -1,196 +0,0 @@
-// Copyright 2019 The Prometheus 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.
-
-// +build !windows
-
-package procfs
-
-import (
-	"bytes"
-	"fmt"
-	"io/ioutil"
-	"regexp"
-	"strings"
-
-	"github.com/prometheus/procfs/internal/util"
-)
-
-// Zoneinfo holds info parsed from /proc/zoneinfo.
-type Zoneinfo struct {
-	Node                       string
-	Zone                       string
-	NrFreePages                *int64
-	Min                        *int64
-	Low                        *int64
-	High                       *int64
-	Scanned                    *int64
-	Spanned                    *int64
-	Present                    *int64
-	Managed                    *int64
-	NrActiveAnon               *int64
-	NrInactiveAnon             *int64
-	NrIsolatedAnon             *int64
-	NrAnonPages                *int64
-	NrAnonTransparentHugepages *int64
-	NrActiveFile               *int64
-	NrInactiveFile             *int64
-	NrIsolatedFile             *int64
-	NrFilePages                *int64
-	NrSlabReclaimable          *int64
-	NrSlabUnreclaimable        *int64
-	NrMlockStack               *int64
-	NrKernelStack              *int64
-	NrMapped                   *int64
-	NrDirty                    *int64
-	NrWriteback                *int64
-	NrUnevictable              *int64
-	NrShmem                    *int64
-	NrDirtied                  *int64
-	NrWritten                  *int64
-	NumaHit                    *int64
-	NumaMiss                   *int64
-	NumaForeign                *int64
-	NumaInterleave             *int64
-	NumaLocal                  *int64
-	NumaOther                  *int64
-	Protection                 []*int64
-}
-
-var nodeZoneRE = regexp.MustCompile(`(\d+), zone\s+(\w+)`)
-
-// Zoneinfo parses an zoneinfo-file (/proc/zoneinfo) and returns a slice of
-// structs containing the relevant info.  More information available here:
-// https://www.kernel.org/doc/Documentation/sysctl/vm.txt
-func (fs FS) Zoneinfo() ([]Zoneinfo, error) {
-	data, err := ioutil.ReadFile(fs.proc.Path("zoneinfo"))
-	if err != nil {
-		return nil, fmt.Errorf("error reading zoneinfo %s: %s", fs.proc.Path("zoneinfo"), err)
-	}
-	zoneinfo, err := parseZoneinfo(data)
-	if err != nil {
-		return nil, fmt.Errorf("error parsing zoneinfo %s: %s", fs.proc.Path("zoneinfo"), err)
-	}
-	return zoneinfo, nil
-}
-
-func parseZoneinfo(zoneinfoData []byte) ([]Zoneinfo, error) {
-
-	zoneinfo := []Zoneinfo{}
-
-	zoneinfoBlocks := bytes.Split(zoneinfoData, []byte("\nNode"))
-	for _, block := range zoneinfoBlocks {
-		var zoneinfoElement Zoneinfo
-		lines := strings.Split(string(block), "\n")
-		for _, line := range lines {
-
-			if nodeZone := nodeZoneRE.FindStringSubmatch(line); nodeZone != nil {
-				zoneinfoElement.Node = nodeZone[1]
-				zoneinfoElement.Zone = nodeZone[2]
-				continue
-			}
-			if strings.HasPrefix(strings.TrimSpace(line), "per-node stats") {
-				zoneinfoElement.Zone = ""
-				continue
-			}
-			parts := strings.Fields(strings.TrimSpace(line))
-			if len(parts) < 2 {
-				continue
-			}
-			vp := util.NewValueParser(parts[1])
-			switch parts[0] {
-			case "nr_free_pages":
-				zoneinfoElement.NrFreePages = vp.PInt64()
-			case "min":
-				zoneinfoElement.Min = vp.PInt64()
-			case "low":
-				zoneinfoElement.Low = vp.PInt64()
-			case "high":
-				zoneinfoElement.High = vp.PInt64()
-			case "scanned":
-				zoneinfoElement.Scanned = vp.PInt64()
-			case "spanned":
-				zoneinfoElement.Spanned = vp.PInt64()
-			case "present":
-				zoneinfoElement.Present = vp.PInt64()
-			case "managed":
-				zoneinfoElement.Managed = vp.PInt64()
-			case "nr_active_anon":
-				zoneinfoElement.NrActiveAnon = vp.PInt64()
-			case "nr_inactive_anon":
-				zoneinfoElement.NrInactiveAnon = vp.PInt64()
-			case "nr_isolated_anon":
-				zoneinfoElement.NrIsolatedAnon = vp.PInt64()
-			case "nr_anon_pages":
-				zoneinfoElement.NrAnonPages = vp.PInt64()
-			case "nr_anon_transparent_hugepages":
-				zoneinfoElement.NrAnonTransparentHugepages = vp.PInt64()
-			case "nr_active_file":
-				zoneinfoElement.NrActiveFile = vp.PInt64()
-			case "nr_inactive_file":
-				zoneinfoElement.NrInactiveFile = vp.PInt64()
-			case "nr_isolated_file":
-				zoneinfoElement.NrIsolatedFile = vp.PInt64()
-			case "nr_file_pages":
-				zoneinfoElement.NrFilePages = vp.PInt64()
-			case "nr_slab_reclaimable":
-				zoneinfoElement.NrSlabReclaimable = vp.PInt64()
-			case "nr_slab_unreclaimable":
-				zoneinfoElement.NrSlabUnreclaimable = vp.PInt64()
-			case "nr_mlock_stack":
-				zoneinfoElement.NrMlockStack = vp.PInt64()
-			case "nr_kernel_stack":
-				zoneinfoElement.NrKernelStack = vp.PInt64()
-			case "nr_mapped":
-				zoneinfoElement.NrMapped = vp.PInt64()
-			case "nr_dirty":
-				zoneinfoElement.NrDirty = vp.PInt64()
-			case "nr_writeback":
-				zoneinfoElement.NrWriteback = vp.PInt64()
-			case "nr_unevictable":
-				zoneinfoElement.NrUnevictable = vp.PInt64()
-			case "nr_shmem":
-				zoneinfoElement.NrShmem = vp.PInt64()
-			case "nr_dirtied":
-				zoneinfoElement.NrDirtied = vp.PInt64()
-			case "nr_written":
-				zoneinfoElement.NrWritten = vp.PInt64()
-			case "numa_hit":
-				zoneinfoElement.NumaHit = vp.PInt64()
-			case "numa_miss":
-				zoneinfoElement.NumaMiss = vp.PInt64()
-			case "numa_foreign":
-				zoneinfoElement.NumaForeign = vp.PInt64()
-			case "numa_interleave":
-				zoneinfoElement.NumaInterleave = vp.PInt64()
-			case "numa_local":
-				zoneinfoElement.NumaLocal = vp.PInt64()
-			case "numa_other":
-				zoneinfoElement.NumaOther = vp.PInt64()
-			case "protection:":
-				protectionParts := strings.Split(line, ":")
-				protectionValues := strings.Replace(protectionParts[1], "(", "", 1)
-				protectionValues = strings.Replace(protectionValues, ")", "", 1)
-				protectionValues = strings.TrimSpace(protectionValues)
-				protectionStringMap := strings.Split(protectionValues, ", ")
-				val, err := util.ParsePInt64s(protectionStringMap)
-				if err == nil {
-					zoneinfoElement.Protection = val
-				}
-			}
-
-		}
-
-		zoneinfo = append(zoneinfo, zoneinfoElement)
-	}
-	return zoneinfo, nil
-}