vendor: cadvisor v0.39.0

Main upgrades:
- github.com/opencontainers/runc v1.0.0-rc93
- github.com/containerd/containerd v1.4.4
- github.com/docker/docker v20.10.2
- github.com/mrunalp/fileutils v0.5.0
- github.com/opencontainers/selinux v1.8.0
- github.com/cilium/ebpf v0.2.0

vendor/github.com/cilium/ebpf/elf_reader.go

@@ -1,6 +1,7 @@
 package ebpf
 
 import (
+	"bufio"
 	"bytes"
 	"debug/elf"
 	"encoding/binary"
@@ -236,7 +237,7 @@ func (ec *elfCode) loadPrograms(progSections map[elf.SectionIndex]*elf.Section,
 
 func (ec *elfCode) loadInstructions(section *elf.Section, symbols, relocations map[uint64]elf.Symbol) (asm.Instructions, uint64, error) {
 	var (
-		r      = section.Open()
+		r      = bufio.NewReader(section.Open())
 		insns  asm.Instructions
 		offset uint64
 	)
@@ -389,7 +390,7 @@ func (ec *elfCode) loadMaps(maps map[string]*MapSpec, mapSections map[elf.Sectio
 		}
 
 		var (
-			r    = sec.Open()
+			r    = bufio.NewReader(sec.Open())
 			size = sec.Size / uint64(len(syms))
 		)
 		for i, offset := 0, uint64(0); i < len(syms); i, offset = i+1, offset+size {
@@ -482,6 +483,7 @@ func mapSpecFromBTF(spec *btf.Spec, name string) (*MapSpec, error) {
 
 	var (
 		mapType, flags, maxEntries uint32
+		pinType                    PinType
 	)
 	for _, member := range btfMapMembers {
 		switch member.Name {
@@ -529,9 +531,7 @@ func mapSpecFromBTF(spec *btf.Spec, name string) (*MapSpec, error) {
 				return nil, fmt.Errorf("can't get pinning: %w", err)
 			}
 
-			if pinning != 0 {
-				return nil, fmt.Errorf("'pinning' attribute not supported: %w", ErrNotSupported)
-			}
+			pinType = PinType(pinning)
 
 		case "key", "value":
 		default:
@@ -540,12 +540,14 @@ func mapSpecFromBTF(spec *btf.Spec, name string) (*MapSpec, error) {
 	}
 
 	return &MapSpec{
+		Name:       SanitizeName(name, -1),
 		Type:       MapType(mapType),
 		KeySize:    keySize,
 		ValueSize:  valueSize,
 		MaxEntries: maxEntries,
 		Flags:      flags,
 		BTF:        btfMap,
+		Pinning:    pinType,
 	}, nil
 }
 
@@ -636,6 +638,8 @@ func getProgType(sectionName string) (ProgramType, AttachType, string) {
 		"lirc_mode2":            {LircMode2, AttachLircMode2},
 		"flow_dissector":        {FlowDissector, AttachFlowDissector},
 		"iter/":                 {Tracing, AttachTraceIter},
+		"sk_lookup/":            {SkLookup, AttachSkLookup},
+		"lsm/":                  {LSM, AttachLSMMac},
 
 		"cgroup_skb/ingress": {CGroupSKB, AttachCGroupInetIngress},
 		"cgroup_skb/egress":  {CGroupSKB, AttachCGroupInetEgress},
@@ -684,7 +688,7 @@ func (ec *elfCode) loadRelocations(sections map[elf.SectionIndex]*elf.Section) (
 			return nil, nil, fmt.Errorf("section %s: relocations are less than 16 bytes", sec.Name)
 		}
 
-		r := sec.Open()
+		r := bufio.NewReader(sec.Open())
 		for off := uint64(0); off < sec.Size; off += sec.Entsize {
 			ent := io.LimitReader(r, int64(sec.Entsize))