Update libcontainer to 2c3115481ee1782ad687a9e0b4834f89533c2acf

It includes fix for parsing systemd cgroup names

Signed-off-by: Alexander Morozov <lk4d4@docker.com>

hack/vendor.sh

@@ -59,7 +59,7 @@ clone git github.com/miekg/pkcs11 80f102b5cac759de406949c47f0928b99bd64cdf
 clone git github.com/docker/go v1.5.1-1-1-gbaf439e
 clone git github.com/agl/ed25519 d2b94fd789ea21d12fac1a4443dd3a3f79cda72c
 
-clone git github.com/opencontainers/runc ce72f86a2b54bc114d6ffb51f6500479b2d42154 # libcontainer
+clone git github.com/opencontainers/runc 2c3115481ee1782ad687a9e0b4834f89533c2acf # libcontainer
 clone git github.com/seccomp/libseccomp-golang 1b506fc7c24eec5a3693cdcbed40d9c226cfc6a1
 # libcontainer deps (see src/github.com/opencontainers/runc/Godeps/Godeps.json)
 clone git github.com/coreos/go-systemd v4

vendor/src/github.com/opencontainers/runc/libcontainer/cgroups/fs/apply_raw.go

@@ -31,6 +31,7 @@ var (
 		&NetPrioGroup{},
 		&PerfEventGroup{},
 		&FreezerGroup{},
+		&NameGroup{GroupName: "name=systemd", Join: true},
 	}
 	CgroupProcesses  = "cgroup.procs"
 	HugePageSizes, _ = cgroups.GetHugePageSize()
@@ -130,11 +131,6 @@ func (m *Manager) Apply(pid int) (err error) {
 	}
 
 	paths := make(map[string]string)
-	defer func() {
-		if err != nil {
-			cgroups.RemovePaths(paths)
-		}
-	}()
 	for _, sys := range subsystems {
 		if err := sys.Apply(d); err != nil {
 			return err

vendor/src/github.com/opencontainers/runc/libcontainer/cgroups/fs/devices.go

@@ -5,6 +5,7 @@ package fs
 import (
 	"github.com/opencontainers/runc/libcontainer/cgroups"
 	"github.com/opencontainers/runc/libcontainer/configs"
+	"github.com/opencontainers/runc/libcontainer/system"
 )
 
 type DevicesGroup struct {
@@ -25,6 +26,10 @@ func (s *DevicesGroup) Apply(d *cgroupData) error {
 }
 
 func (s *DevicesGroup) Set(path string, cgroup *configs.Cgroup) error {
+	if system.RunningInUserNS() {
+		return nil
+	}
+
 	devices := cgroup.Resources.Devices
 	if len(devices) > 0 {
 		for _, dev := range devices {

vendor/src/github.com/opencontainers/runc/libcontainer/cgroups/fs/name.go

@@ -9,6 +9,7 @@ import (
 
 type NameGroup struct {
 	GroupName string
+	Join      bool
 }
 
 func (s *NameGroup) Name() string {
@@ -16,6 +17,10 @@ func (s *NameGroup) Name() string {
 }
 
 func (s *NameGroup) Apply(d *cgroupData) error {
+	if s.Join {
+		// ignore errors if the named cgroup does not exist
+		d.join(s.GroupName)
+	}
 	return nil
 }
 
@@ -24,6 +29,9 @@ func (s *NameGroup) Set(path string, cgroup *configs.Cgroup) error {
 }
 
 func (s *NameGroup) Remove(d *cgroupData) error {
+	if s.Join {
+		removePath(d.path(s.GroupName))
+	}
 	return nil
 }
 

vendor/src/github.com/opencontainers/runc/libcontainer/cgroups/utils.go

@@ -126,11 +126,11 @@ func getCgroupMountsHelper(ss map[string]bool, mi io.Reader) ([]Mount, error) {
 	scanner := bufio.NewScanner(mi)
 	for scanner.Scan() {
 		txt := scanner.Text()
-		sepIdx := strings.IndexByte(txt, '-')
+		sepIdx := strings.Index(txt, " - ")
 		if sepIdx == -1 {
 			return nil, fmt.Errorf("invalid mountinfo format")
 		}
-		if txt[sepIdx+2:sepIdx+8] != "cgroup" {
+		if txt[sepIdx+3:sepIdx+9] != "cgroup" {
 			continue
 		}
 		fields := strings.Split(txt, " ")