New oom sync (#257)

* Vendor in runc afaa21f79ade3b2e99a68f3f15e7219155aa4662

This updates the Dockerfile to use go 1.6.2 and install pkg-config are
both are now needed by runc.

Signed-off-by: Kenfe-Mickael Laventure <mickael.laventure@gmail.com>

* Add support for runc create/start operation

Signed-off-by: Kenfe-Mickael Laventure <mickael.laventure@gmail.com>

* Remove dependency on runc state directory for OOM handler

Signed-off-by: Kenfe-Mickael Laventure <mickael.laventure@gmail.com>

* Add OOM test

Signed-off-by: Kenfe-Mickael Laventure <mickael.laventure@gmail.com>

Dockerfile

@@ -11,13 +11,14 @@ RUN apt-get update && apt-get install -y \
 	git \
 	make \
 	jq \
+	pkg-config \
 	apparmor \
 	libapparmor-dev \
 	--no-install-recommends \
 	&& rm -rf /var/lib/apt/lists/*
 
 # Install Go
-ENV GO_VERSION 1.5.3
+ENV GO_VERSION 1.6.2
 RUN curl -sSL  "https://storage.googleapis.com/golang/go${GO_VERSION}.linux-amd64.tar.gz" | tar -v -C /usr/local -xz
 ENV PATH /go/bin:/usr/local/go/bin:$PATH
 ENV GOPATH /go:/go/src/github.com/docker/containerd/vendor
@@ -54,7 +55,7 @@ RUN set -x \
 	&& rm -rf "$SECCOMP_PATH"
 
 # Install runc
-ENV RUNC_COMMIT d49ece5a83da3dcb820121d6850e2b61bd0a5fbe
+ENV RUNC_COMMIT afaa21f79ade3b2e99a68f3f15e7219155aa4662
 RUN set -x \
 	&& export GOPATH="$(mktemp -d)" \
     && git clone git://github.com/opencontainers/runc.git "$GOPATH/src/github.com/opencontainers/runc" \

containerd-shim/main.go

@@ -3,6 +3,7 @@ package main
 import (
 	"flag"
 	"fmt"
+	"io/ioutil"
 	"os"
 	"os/signal"
 	"path/filepath"
@@ -77,7 +78,7 @@ func start(log *os.File) error {
 			writeMessage(log, "warn", err)
 		}
 	}()
-	if err := p.start(); err != nil {
+	if err := p.create(); err != nil {
 		p.delete()
 		return err
 	}
@@ -102,6 +103,11 @@ func start(log *os.File) error {
 					Height: uint16(h),
 				}
 				term.SetWinsize(p.console.Fd(), &ws)
+			case 2:
+				// tell runtime to execute the init process
+				if err := p.start(); err != nil {
+					syscall.Kill(p.pid(), syscall.SIGKILL)
+				}
 			}
 		}
 	}()
@@ -120,6 +126,7 @@ func start(log *os.File) error {
 		}
 		// runtime has exited so the shim can also exit
 		if exitShim {
+			ioutil.WriteFile(fmt.Sprintf("/tmp/shim-delete-%d", p.pid()), []byte("deleting"), 0600)
 			p.delete()
 			p.Wait()
 			return nil

containerd-shim/process.go

@@ -115,7 +115,7 @@ func loadCheckpoint(checkpointPath string) (*checkpoint, error) {
 	return &cpt, nil
 }
 
-func (p *process) start() error {
+func (p *process) create() error {
 	cwd, err := os.Getwd()
 	if err != nil {
 		return err
@@ -127,6 +127,7 @@ func (p *process) start() error {
 	}, p.state.RuntimeArgs...)
 	if p.state.Exec {
 		args = append(args, "exec",
+			"-d",
 			"--process", filepath.Join(cwd, "process.json"),
 			"--console", p.consolePath,
 		)
@@ -151,7 +152,7 @@ func (p *process) start() error {
 			add("--no-pivot")
 		}
 	} else {
-		args = append(args, "start",
+		args = append(args, "create",
 			"--bundle", p.bundle,
 			"--console", p.consolePath,
 		)
@@ -160,7 +161,6 @@ func (p *process) start() error {
 		}
 	}
 	args = append(args,
-		"-d",
 		"--pid-file", filepath.Join(cwd, "pid"),
 		p.id,
 	)
@@ -200,6 +200,25 @@ func (p *process) start() error {
 	return nil
 }
 
+func (p *process) start() error {
+	cwd, err := os.Getwd()
+	if err != nil {
+		return err
+	}
+	logPath := filepath.Join(cwd, "log.json")
+	args := append([]string{
+		"--log", logPath,
+		"--log-format", "json",
+	}, p.state.RuntimeArgs...)
+	args = append(args, "start", p.id)
+	cmd := exec.Command(p.runtime, args...)
+	cmd.Dir = p.bundle
+	cmd.Stdin = p.stdio.stdin
+	cmd.Stdout = p.stdio.stdout
+	cmd.Stderr = p.stdio.stderr
+	return cmd.Run()
+}
+
 func (p *process) pid() int {
 	return p.containerPid
 }

hack/vendor.sh

@@ -14,7 +14,7 @@ clone git github.com/docker/go-units 5d2041e26a699eaca682e2ea41c8f891e1060444
 clone git github.com/godbus/dbus e2cf28118e66a6a63db46cf6088a35d2054d3bb0
 clone git github.com/golang/glog 23def4e6c14b4da8ac2ed8007337bc5eb5007998
 clone git github.com/golang/protobuf 3c84672111d91bb5ac31719e112f9f7126a0e26e
-clone git github.com/opencontainers/runc d49ece5a83da3dcb820121d6850e2b61bd0a5fbe
+clone git github.com/opencontainers/runc afaa21f79ade3b2e99a68f3f15e7219155aa4662
 clone git github.com/opencontainers/runtime-spec f955d90e70a98ddfb886bd930ffd076da9b67998
 clone git github.com/rcrowley/go-metrics eeba7bd0dd01ace6e690fa833b3f22aaec29af43
 clone git github.com/satori/go.uuid f9ab0dce87d815821e221626b772e3475a0d2749

integration-test/container_utils_test.go

@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"fmt"
 	"io"
+	"io/ioutil"
 	"os"
 	"path/filepath"
 	"sort"
@@ -13,6 +14,11 @@ import (
 	"golang.org/x/net/context"
 )
 
+func (cs *ContainerdSuite) GetLogs() string {
+	b, _ := ioutil.ReadFile(cs.logFile.Name())
+	return string(b)
+}
+
 func (cs *ContainerdSuite) ListRunningContainers() ([]*types.Container, error) {
 	resp, err := cs.grpcClient.State(context.Background(), &types.StateRequest{})
 	if err != nil {
@@ -38,6 +44,16 @@ func (cs *ContainerdSuite) KillContainer(id string) error {
 	return cs.SignalContainerProcess(id, "init", uint32(syscall.SIGKILL))
 }
 
+func (cs *ContainerdSuite) UpdateContainerResource(id string, rs *types.UpdateResource) error {
+	_, err := cs.grpcClient.UpdateContainer(context.Background(), &types.UpdateContainerRequest{
+		Id:        id,
+		Pid:       "init",
+		Status:    "",
+		Resources: rs,
+	})
+	return err
+}
+
 func (cs *ContainerdSuite) PauseContainer(id string) error {
 	_, err := cs.grpcClient.UpdateContainer(context.Background(), &types.UpdateContainerRequest{
 		Id:     id,

integration-test/start_test.go

@@ -9,6 +9,7 @@ import (
 	"github.com/docker/containerd/api/grpc/types"
 	"github.com/docker/docker/pkg/integration/checker"
 	"github.com/go-check/check"
+	ocs "github.com/opencontainers/runtime-spec/specs-go"
 	"google.golang.org/grpc"
 )
 
@@ -61,7 +62,8 @@ func (cs *ContainerdSuite) TestStartBusyboxTop(t *check.C) {
 		t.Fatal(err)
 	}
 
-	_, err := cs.StartContainer("top", bundleName)
+	containerID := "start-busybox-top"
+	_, err := cs.StartContainer(containerID, bundleName)
 	t.Assert(err, checker.Equals, nil)
 
 	containers, err := cs.ListRunningContainers()
@@ -69,7 +71,7 @@ func (cs *ContainerdSuite) TestStartBusyboxTop(t *check.C) {
 		t.Fatal(err)
 	}
 	t.Assert(len(containers), checker.Equals, 1)
-	t.Assert(containers[0].Id, checker.Equals, "top")
+	t.Assert(containers[0].Id, checker.Equals, containerID)
 	t.Assert(containers[0].Status, checker.Equals, "running")
 	t.Assert(containers[0].BundlePath, check.Equals, filepath.Join(cs.cwd, GetBundle(bundleName).Path))
 }
@@ -144,8 +146,8 @@ func (cs *ContainerdSuite) TestStartBusyboxTopKill(t *check.C) {
 		t.Fatal(err)
 	}
 
-	containerID := "top"
+	containerID := "top-kill"
-	c, err := cs.StartContainer("top", bundleName)
+	c, err := cs.StartContainer(containerID, bundleName)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -189,8 +191,8 @@ func (cs *ContainerdSuite) TestStartBusyboxTopSignalSigterm(t *check.C) {
 		t.Fatal(err)
 	}
 
-	containerID := "top"
+	containerID := "top-sigterm"
-	c, err := cs.StartContainer("top", bundleName)
+	c, err := cs.StartContainer(containerID, bundleName)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -229,7 +231,7 @@ func (cs *ContainerdSuite) TestStartBusyboxTopSignalSigterm(t *check.C) {
 }
 
 func (cs *ContainerdSuite) TestStartBusyboxTrapUSR1(t *check.C) {
-	if err := CreateBusyboxBundle("busybox-trap-usr1", []string{"sh", "-c", "trap 'echo -n booh!' SIGUSR1 ; sleep 100  &  wait"}); err != nil {
+	if err := CreateBusyboxBundle("busybox-trap-usr1", []string{"sh", "-c", "trap 'echo -n booh!' SIGUSR1 ; sleep 60  &  wait"}); err != nil {
 		t.Fatal(err)
 	}
 
@@ -239,6 +241,8 @@ func (cs *ContainerdSuite) TestStartBusyboxTrapUSR1(t *check.C) {
 		t.Fatal(err)
 	}
 
+	<-time.After(1 * time.Second)
+
 	if err := cs.SignalContainer(containerID, uint32(syscall.SIGUSR1)); err != nil {
 		t.Fatal(err)
 	}
@@ -259,7 +263,7 @@ func (cs *ContainerdSuite) TestStartBusyboxTopPauseResume(t *check.C) {
 		t.Fatal(err)
 	}
 
-	containerID := "top"
+	containerID := "top-pause-resume"
 	c, err := cs.StartContainer(containerID, bundleName)
 	if err != nil {
 		t.Fatal(err)
@@ -310,10 +314,59 @@ func (cs *ContainerdSuite) TestStartBusyboxTopPauseResume(t *check.C) {
 		t.Fatal(err)
 	}
 	t.Assert(len(containers), checker.Equals, 1)
-	t.Assert(containers[0].Id, checker.Equals, "top")
+	t.Assert(containers[0].Id, checker.Equals, containerID)
 	t.Assert(containers[0].Status, checker.Equals, "running")
 }
 
+func (cs *ContainerdSuite) TestOOM(t *check.C) {
+	bundleName := "busybox-sh-512k-memlimit"
+	if err := CreateBundleWithFilter("busybox", bundleName, []string{"sh", "-c", "x=oom-party-time; while true; do x=$x$x$x$x$x$x$x$x$x$x; done"}, func(spec *ocs.Spec) {
+		// Limit to 512k for quick oom
+		var limit uint64 = 8 * 1024 * 1024
+		spec.Linux.Resources.Memory = &ocs.Memory{
+			Limit: &limit,
+		}
+	}); err != nil {
+		t.Fatal(err)
+	}
+
+	containerID := "sh-oom"
+	c, err := cs.StartContainer(containerID, bundleName)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	for _, evt := range []types.Event{
+		{
+			Type:   "start-container",
+			Id:     containerID,
+			Status: 0,
+			Pid:    "",
+		},
+		{
+			Type:   "oom",
+			Id:     containerID,
+			Status: 0,
+			Pid:    "",
+		},
+		{
+			Type:   "exit",
+			Id:     containerID,
+			Status: 137,
+			Pid:    "init",
+		},
+	} {
+		ch := c.GetEventsChannel()
+		select {
+		case e := <-ch:
+			evt.Timestamp = e.Timestamp
+			t.Assert(*e, checker.Equals, evt)
+		case <-time.After(60 * time.Second):
+			t.Fatal("Container took more than 10 seconds to terminate")
+		}
+	}
+}
+
 func (cs *ContainerdSuite) TestRestart(t *check.C) {
 	bundleName := "busybox-top"
 	if err := CreateBusyboxBundle(bundleName, []string{"top"}); err != nil {

runtime/container.go

@@ -413,7 +413,7 @@ func (c *container) Start(checkpointPath string, s Stdio) (Process, error) {
 	if err != nil {
 		return nil, err
 	}
-	if err := c.startCmd(InitProcessID, cmd, p); err != nil {
+	if err := c.createCmd(InitProcessID, cmd, p); err != nil {
 		return nil, err
 	}
 	return p, nil
@@ -453,13 +453,13 @@ func (c *container) Exec(pid string, pspec specs.ProcessSpec, s Stdio) (pp Proce
 	if err != nil {
 		return nil, err
 	}
-	if err := c.startCmd(pid, cmd, p); err != nil {
+	if err := c.createCmd(pid, cmd, p); err != nil {
 		return nil, err
 	}
 	return p, nil
 }
 
-func (c *container) startCmd(pid string, cmd *exec.Cmd, p *process) error {
+func (c *container) createCmd(pid string, cmd *exec.Cmd, p *process) error {
 	p.cmd = cmd
 	if err := cmd.Start(); err != nil {
 		if exErr, ok := err.(*exec.Error); ok {
@@ -469,7 +469,7 @@ func (c *container) startCmd(pid string, cmd *exec.Cmd, p *process) error {
 		}
 		return err
 	}
-	if err := c.waitForStart(p, cmd); err != nil {
+	if err := c.waitForCreate(p, cmd); err != nil {
 		return err
 	}
 	c.processes[pid] = p
@@ -552,7 +552,7 @@ type waitArgs struct {
 	err error
 }
 
-func (c *container) waitForStart(p *process, cmd *exec.Cmd) error {
+func (c *container) waitForCreate(p *process, cmd *exec.Cmd) error {
 	wc := make(chan error, 1)
 	go func() {
 		for {

runtime/container_linux.go

@@ -1,6 +1,7 @@
 package runtime
 
 import (
+	"bufio"
 	"bytes"
 	"encoding/json"
 	"fmt"
@@ -11,46 +12,84 @@ import (
 	"syscall"
 
 	"github.com/docker/containerd/specs"
-	"github.com/opencontainers/runc/libcontainer"
 	ocs "github.com/opencontainers/runtime-spec/specs-go"
 )
 
-func (c *container) getLibctContainer() (libcontainer.Container, error) {
+func findCgroupMountpointAndRoot(pid int, subsystem string) (string, string, error) {
-	runtimeRoot := "/run/runc"
+	f, err := os.Open(fmt.Sprintf("/proc/%d/mountinfo", pid))
+	if err != nil {
+		return "", "", err
+	}
+	defer f.Close()
 
-	// Check that the root wasn't changed
+	scanner := bufio.NewScanner(f)
-	for _, opt := range c.runtimeArgs {
+	for scanner.Scan() {
-		if strings.HasPrefix(opt, "--root=") {
+		txt := scanner.Text()
-			runtimeRoot = strings.TrimPrefix(opt, "--root=")
+		fields := strings.Split(txt, " ")
-			break
+		for _, opt := range strings.Split(fields[len(fields)-1], ",") {
+			if opt == subsystem {
+				return fields[4], fields[3], nil
+			}
 		}
 	}
+	if err := scanner.Err(); err != nil {
+		return "", "", err
+	}
 
-	f, err := libcontainer.New(runtimeRoot, libcontainer.Cgroupfs)
+	return "", "", fmt.Errorf("cgroup path for %s not found", subsystem)
+}
+
+func parseCgroupFile(path string) (map[string]string, error) {
+	f, err := os.Open(path)
 	if err != nil {
 		return nil, err
 	}
-	return f.Load(c.id)
+	defer f.Close()
+
+	s := bufio.NewScanner(f)
+	cgroups := make(map[string]string)
+
+	for s.Scan() {
+		if err := s.Err(); err != nil {
+			return nil, err
+		}
+
+		text := s.Text()
+		parts := strings.Split(text, ":")
+
+		for _, subs := range strings.Split(parts[1], ",") {
+			cgroups[subs] = parts[2]
+		}
+	}
+	return cgroups, nil
 }
 
 func (c *container) OOM() (OOM, error) {
-	container, err := c.getLibctContainer()
+	p := c.processes[InitProcessID]
-	if err != nil {
+	if p == nil {
-		if lerr, ok := err.(libcontainer.Error); ok {
+		return nil, fmt.Errorf("no init process found")
-			// with oom registration sometimes the container can run, exit, and be destroyed
-			// faster than we can get the state back so we can just ignore this
-			if lerr.Code() == libcontainer.ContainerNotExists {
-				return nil, ErrContainerExited
-			}
-		}
-		return nil, err
 	}
-	state, err := container.State()
+
+	mountpoint, hostRoot, err := findCgroupMountpointAndRoot(os.Getpid(), "memory")
 	if err != nil {
 		return nil, err
 	}
-	memoryPath := state.CgroupPaths["memory"]
+
-	return c.getMemeoryEventFD(memoryPath)
+	cgroups, err := parseCgroupFile(fmt.Sprintf("/proc/%d/cgroup", p.pid))
+	if err != nil {
+		return nil, err
+	}
+
+	root, ok := cgroups["memory"]
+	if !ok {
+		return nil, fmt.Errorf("no memory cgroup for container %s", c.ID())
+	}
+
+	// Take care of the case were we're running inside a container
+	// ourself
+	root = strings.TrimPrefix(root, hostRoot)
+
+	return c.getMemeoryEventFD(filepath.Join(mountpoint, root))
 }
 
 func u64Ptr(i uint64) *uint64 { return &i }

runtime/process.go

@@ -23,6 +23,9 @@ type Process interface {
 	// This is either "init" when it is the container's init process or
 	// it is a user provided id for the process similar to the container id
 	ID() string
+	// Start unblocks the associated container init process.
+	// This should only be called on the process with ID "init"
+	Start() error
 	CloseStdin() error
 	Resize(int, int) error
 	// ExitFD returns the fd the provides an event when the process exits
@@ -252,3 +255,13 @@ func getControlPipe(path string) (*os.File, error) {
 func (p *process) Signal(s os.Signal) error {
 	return syscall.Kill(p.pid, s.(syscall.Signal))
 }
+
+// Start unblocks the associated container init process.
+// This should only be called on the process with ID "init"
+func (p *process) Start() error {
+	if p.ID() == InitProcessID {
+		_, err := fmt.Fprintf(p.controlPipe, "%d %d %d\n", 2, 0, 0)
+		return err
+	}
+	return nil
+}

supervisor/sort_test.go

@@ -17,6 +17,10 @@ func (p *testProcess) ID() string {
 	return p.id
 }
 
+func (p *testProcess) Start() error {
+	return nil
+}
+
 func (p *testProcess) CloseStdin() error {
 	return nil
 }

supervisor/worker.go

@@ -63,6 +63,9 @@ func (w *worker) Start() {
 		if err := w.s.monitorProcess(process); err != nil {
 			logrus.WithField("error", err).Error("containerd: add process to monitor")
 		}
+		if err := process.Start(); err != nil {
+			logrus.WithField("error", err).Error("containerd: start init process")
+		}
 		ContainerStartTimer.UpdateSince(started)
 		t.Err <- nil
 		t.StartResponse <- StartResponse{

vendor/src/github.com/coreos/go-systemd/dbus/dbus.go

@@ -1,198 +0,0 @@
-// Copyright 2015 CoreOS, Inc.
-//
-// 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.
-
-// Integration with the systemd D-Bus API.  See http://www.freedesktop.org/wiki/Software/systemd/dbus/
-package dbus
-
-import (
-	"fmt"
-	"os"
-	"strconv"
-	"strings"
-	"sync"
-
-	"github.com/godbus/dbus"
-)
-
-const (
-	alpha        = `abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ`
-	num          = `0123456789`
-	alphanum     = alpha + num
-	signalBuffer = 100
-)
-
-// needsEscape checks whether a byte in a potential dbus ObjectPath needs to be escaped
-func needsEscape(i int, b byte) bool {
-	// Escape everything that is not a-z-A-Z-0-9
-	// Also escape 0-9 if it's the first character
-	return strings.IndexByte(alphanum, b) == -1 ||
-		(i == 0 && strings.IndexByte(num, b) != -1)
-}
-
-// PathBusEscape sanitizes a constituent string of a dbus ObjectPath using the
-// rules that systemd uses for serializing special characters.
-func PathBusEscape(path string) string {
-	// Special case the empty string
-	if len(path) == 0 {
-		return "_"
-	}
-	n := []byte{}
-	for i := 0; i < len(path); i++ {
-		c := path[i]
-		if needsEscape(i, c) {
-			e := fmt.Sprintf("_%x", c)
-			n = append(n, []byte(e)...)
-		} else {
-			n = append(n, c)
-		}
-	}
-	return string(n)
-}
-
-// Conn is a connection to systemd's dbus endpoint.
-type Conn struct {
-	// sysconn/sysobj are only used to call dbus methods
-	sysconn *dbus.Conn
-	sysobj  dbus.BusObject
-
-	// sigconn/sigobj are only used to receive dbus signals
-	sigconn *dbus.Conn
-	sigobj  dbus.BusObject
-
-	jobListener struct {
-		jobs map[dbus.ObjectPath]chan<- string
-		sync.Mutex
-	}
-	subscriber struct {
-		updateCh chan<- *SubStateUpdate
-		errCh    chan<- error
-		sync.Mutex
-		ignore      map[dbus.ObjectPath]int64
-		cleanIgnore int64
-	}
-}
-
-// New establishes a connection to the system bus and authenticates.
-// Callers should call Close() when done with the connection.
-func New() (*Conn, error) {
-	return newConnection(func() (*dbus.Conn, error) {
-		return dbusAuthHelloConnection(dbus.SystemBusPrivate)
-	})
-}
-
-// NewUserConnection establishes a connection to the session bus and
-// authenticates. This can be used to connect to systemd user instances.
-// Callers should call Close() when done with the connection.
-func NewUserConnection() (*Conn, error) {
-	return newConnection(func() (*dbus.Conn, error) {
-		return dbusAuthHelloConnection(dbus.SessionBusPrivate)
-	})
-}
-
-// NewSystemdConnection establishes a private, direct connection to systemd.
-// This can be used for communicating with systemd without a dbus daemon.
-// Callers should call Close() when done with the connection.
-func NewSystemdConnection() (*Conn, error) {
-	return newConnection(func() (*dbus.Conn, error) {
-		// We skip Hello when talking directly to systemd.
-		return dbusAuthConnection(func() (*dbus.Conn, error) {
-			return dbus.Dial("unix:path=/run/systemd/private")
-		})
-	})
-}
-
-// Close closes an established connection
-func (c *Conn) Close() {
-	c.sysconn.Close()
-	c.sigconn.Close()
-}
-
-func newConnection(createBus func() (*dbus.Conn, error)) (*Conn, error) {
-	sysconn, err := createBus()
-	if err != nil {
-		return nil, err
-	}
-
-	sigconn, err := createBus()
-	if err != nil {
-		sysconn.Close()
-		return nil, err
-	}
-
-	c := &Conn{
-		sysconn: sysconn,
-		sysobj:  systemdObject(sysconn),
-		sigconn: sigconn,
-		sigobj:  systemdObject(sigconn),
-	}
-
-	c.subscriber.ignore = make(map[dbus.ObjectPath]int64)
-	c.jobListener.jobs = make(map[dbus.ObjectPath]chan<- string)
-
-	// Setup the listeners on jobs so that we can get completions
-	c.sigconn.BusObject().Call("org.freedesktop.DBus.AddMatch", 0,
-		"type='signal', interface='org.freedesktop.systemd1.Manager', member='JobRemoved'")
-
-	c.dispatch()
-	return c, nil
-}
-
-// GetManagerProperty returns the value of a property on the org.freedesktop.systemd1.Manager
-// interface. The value is returned in its string representation, as defined at
-// https://developer.gnome.org/glib/unstable/gvariant-text.html
-func (c *Conn) GetManagerProperty(prop string) (string, error) {
-	variant, err := c.sysobj.GetProperty("org.freedesktop.systemd1.Manager." + prop)
-	if err != nil {
-		return "", err
-	}
-	return variant.String(), nil
-}
-
-func dbusAuthConnection(createBus func() (*dbus.Conn, error)) (*dbus.Conn, error) {
-	conn, err := createBus()
-	if err != nil {
-		return nil, err
-	}
-
-	// Only use EXTERNAL method, and hardcode the uid (not username)
-	// to avoid a username lookup (which requires a dynamically linked
-	// libc)
-	methods := []dbus.Auth{dbus.AuthExternal(strconv.Itoa(os.Getuid()))}
-
-	err = conn.Auth(methods)
-	if err != nil {
-		conn.Close()
-		return nil, err
-	}
-
-	return conn, nil
-}
-
-func dbusAuthHelloConnection(createBus func() (*dbus.Conn, error)) (*dbus.Conn, error) {
-	conn, err := dbusAuthConnection(createBus)
-	if err != nil {
-		return nil, err
-	}
-
-	if err = conn.Hello(); err != nil {
-		conn.Close()
-		return nil, err
-	}
-
-	return conn, nil
-}
-
-func systemdObject(conn *dbus.Conn) dbus.BusObject {
-	return conn.Object("org.freedesktop.systemd1", dbus.ObjectPath("/org/freedesktop/systemd1"))
-}

vendor/src/github.com/coreos/go-systemd/dbus/methods.go

@@ -1,442 +0,0 @@
-// Copyright 2015 CoreOS, Inc.
-//
-// 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 dbus
-
-import (
-	"errors"
-	"path"
-	"strconv"
-
-	"github.com/godbus/dbus"
-)
-
-func (c *Conn) jobComplete(signal *dbus.Signal) {
-	var id uint32
-	var job dbus.ObjectPath
-	var unit string
-	var result string
-	dbus.Store(signal.Body, &id, &job, &unit, &result)
-	c.jobListener.Lock()
-	out, ok := c.jobListener.jobs[job]
-	if ok {
-		out <- result
-		delete(c.jobListener.jobs, job)
-	}
-	c.jobListener.Unlock()
-}
-
-func (c *Conn) startJob(ch chan<- string, job string, args ...interface{}) (int, error) {
-	if ch != nil {
-		c.jobListener.Lock()
-		defer c.jobListener.Unlock()
-	}
-
-	var p dbus.ObjectPath
-	err := c.sysobj.Call(job, 0, args...).Store(&p)
-	if err != nil {
-		return 0, err
-	}
-
-	if ch != nil {
-		c.jobListener.jobs[p] = ch
-	}
-
-	// ignore error since 0 is fine if conversion fails
-	jobID, _ := strconv.Atoi(path.Base(string(p)))
-
-	return jobID, nil
-}
-
-// StartUnit enqueues a start job and depending jobs, if any (unless otherwise
-// specified by the mode string).
-//
-// Takes the unit to activate, plus a mode string. The mode needs to be one of
-// replace, fail, isolate, ignore-dependencies, ignore-requirements. If
-// "replace" the call will start the unit and its dependencies, possibly
-// replacing already queued jobs that conflict with this. If "fail" the call
-// will start the unit and its dependencies, but will fail if this would change
-// an already queued job. If "isolate" the call will start the unit in question
-// and terminate all units that aren't dependencies of it. If
-// "ignore-dependencies" it will start a unit but ignore all its dependencies.
-// If "ignore-requirements" it will start a unit but only ignore the
-// requirement dependencies. It is not recommended to make use of the latter
-// two options.
-//
-// If the provided channel is non-nil, a result string will be sent to it upon
-// job completion: one of done, canceled, timeout, failed, dependency, skipped.
-// done indicates successful execution of a job. canceled indicates that a job
-// has been canceled  before it finished execution. timeout indicates that the
-// job timeout was reached. failed indicates that the job failed. dependency
-// indicates that a job this job has been depending on failed and the job hence
-// has been removed too. skipped indicates that a job was skipped because it
-// didn't apply to the units current state.
-//
-// If no error occurs, the ID of the underlying systemd job will be returned. There
-// does exist the possibility for no error to be returned, but for the returned job
-// ID to be 0. In this case, the actual underlying ID is not 0 and this datapoint
-// should not be considered authoritative.
-//
-// If an error does occur, it will be returned to the user alongside a job ID of 0.
-func (c *Conn) StartUnit(name string, mode string, ch chan<- string) (int, error) {
-	return c.startJob(ch, "org.freedesktop.systemd1.Manager.StartUnit", name, mode)
-}
-
-// StopUnit is similar to StartUnit but stops the specified unit rather
-// than starting it.
-func (c *Conn) StopUnit(name string, mode string, ch chan<- string) (int, error) {
-	return c.startJob(ch, "org.freedesktop.systemd1.Manager.StopUnit", name, mode)
-}
-
-// ReloadUnit reloads a unit.  Reloading is done only if the unit is already running and fails otherwise.
-func (c *Conn) ReloadUnit(name string, mode string, ch chan<- string) (int, error) {
-	return c.startJob(ch, "org.freedesktop.systemd1.Manager.ReloadUnit", name, mode)
-}
-
-// RestartUnit restarts a service.  If a service is restarted that isn't
-// running it will be started.
-func (c *Conn) RestartUnit(name string, mode string, ch chan<- string) (int, error) {
-	return c.startJob(ch, "org.freedesktop.systemd1.Manager.RestartUnit", name, mode)
-}
-
-// TryRestartUnit is like RestartUnit, except that a service that isn't running
-// is not affected by the restart.
-func (c *Conn) TryRestartUnit(name string, mode string, ch chan<- string) (int, error) {
-	return c.startJob(ch, "org.freedesktop.systemd1.Manager.TryRestartUnit", name, mode)
-}
-
-// ReloadOrRestart attempts a reload if the unit supports it and use a restart
-// otherwise.
-func (c *Conn) ReloadOrRestartUnit(name string, mode string, ch chan<- string) (int, error) {
-	return c.startJob(ch, "org.freedesktop.systemd1.Manager.ReloadOrRestartUnit", name, mode)
-}
-
-// ReloadOrTryRestart attempts a reload if the unit supports it and use a "Try"
-// flavored restart otherwise.
-func (c *Conn) ReloadOrTryRestartUnit(name string, mode string, ch chan<- string) (int, error) {
-	return c.startJob(ch, "org.freedesktop.systemd1.Manager.ReloadOrTryRestartUnit", name, mode)
-}
-
-// StartTransientUnit() may be used to create and start a transient unit, which
-// will be released as soon as it is not running or referenced anymore or the
-// system is rebooted. name is the unit name including suffix, and must be
-// unique. mode is the same as in StartUnit(), properties contains properties
-// of the unit.
-func (c *Conn) StartTransientUnit(name string, mode string, properties []Property, ch chan<- string) (int, error) {
-	return c.startJob(ch, "org.freedesktop.systemd1.Manager.StartTransientUnit", name, mode, properties, make([]PropertyCollection, 0))
-}
-
-// KillUnit takes the unit name and a UNIX signal number to send.  All of the unit's
-// processes are killed.
-func (c *Conn) KillUnit(name string, signal int32) {
-	c.sysobj.Call("org.freedesktop.systemd1.Manager.KillUnit", 0, name, "all", signal).Store()
-}
-
-// ResetFailedUnit resets the "failed" state of a specific unit.
-func (c *Conn) ResetFailedUnit(name string) error {
-	return c.sysobj.Call("org.freedesktop.systemd1.Manager.ResetFailedUnit", 0, name).Store()
-}
-
-// getProperties takes the unit name and returns all of its dbus object properties, for the given dbus interface
-func (c *Conn) getProperties(unit string, dbusInterface string) (map[string]interface{}, error) {
-	var err error
-	var props map[string]dbus.Variant
-
-	path := unitPath(unit)
-	if !path.IsValid() {
-		return nil, errors.New("invalid unit name: " + unit)
-	}
-
-	obj := c.sysconn.Object("org.freedesktop.systemd1", path)
-	err = obj.Call("org.freedesktop.DBus.Properties.GetAll", 0, dbusInterface).Store(&props)
-	if err != nil {
-		return nil, err
-	}
-
-	out := make(map[string]interface{}, len(props))
-	for k, v := range props {
-		out[k] = v.Value()
-	}
-
-	return out, nil
-}
-
-// GetUnitProperties takes the unit name and returns all of its dbus object properties.
-func (c *Conn) GetUnitProperties(unit string) (map[string]interface{}, error) {
-	return c.getProperties(unit, "org.freedesktop.systemd1.Unit")
-}
-
-func (c *Conn) getProperty(unit string, dbusInterface string, propertyName string) (*Property, error) {
-	var err error
-	var prop dbus.Variant
-
-	path := unitPath(unit)
-	if !path.IsValid() {
-		return nil, errors.New("invalid unit name: " + unit)
-	}
-
-	obj := c.sysconn.Object("org.freedesktop.systemd1", path)
-	err = obj.Call("org.freedesktop.DBus.Properties.Get", 0, dbusInterface, propertyName).Store(&prop)
-	if err != nil {
-		return nil, err
-	}
-
-	return &Property{Name: propertyName, Value: prop}, nil
-}
-
-func (c *Conn) GetUnitProperty(unit string, propertyName string) (*Property, error) {
-	return c.getProperty(unit, "org.freedesktop.systemd1.Unit", propertyName)
-}
-
-// GetUnitTypeProperties returns the extra properties for a unit, specific to the unit type.
-// Valid values for unitType: Service, Socket, Target, Device, Mount, Automount, Snapshot, Timer, Swap, Path, Slice, Scope
-// return "dbus.Error: Unknown interface" if the unitType is not the correct type of the unit
-func (c *Conn) GetUnitTypeProperties(unit string, unitType string) (map[string]interface{}, error) {
-	return c.getProperties(unit, "org.freedesktop.systemd1."+unitType)
-}
-
-// SetUnitProperties() may be used to modify certain unit properties at runtime.
-// Not all properties may be changed at runtime, but many resource management
-// settings (primarily those in systemd.cgroup(5)) may. The changes are applied
-// instantly, and stored on disk for future boots, unless runtime is true, in which
-// case the settings only apply until the next reboot. name is the name of the unit
-// to modify. properties are the settings to set, encoded as an array of property
-// name and value pairs.
-func (c *Conn) SetUnitProperties(name string, runtime bool, properties ...Property) error {
-	return c.sysobj.Call("org.freedesktop.systemd1.Manager.SetUnitProperties", 0, name, runtime, properties).Store()
-}
-
-func (c *Conn) GetUnitTypeProperty(unit string, unitType string, propertyName string) (*Property, error) {
-	return c.getProperty(unit, "org.freedesktop.systemd1."+unitType, propertyName)
-}
-
-type UnitStatus struct {
-	Name        string          // The primary unit name as string
-	Description string          // The human readable description string
-	LoadState   string          // The load state (i.e. whether the unit file has been loaded successfully)
-	ActiveState string          // The active state (i.e. whether the unit is currently started or not)
-	SubState    string          // The sub state (a more fine-grained version of the active state that is specific to the unit type, which the active state is not)
-	Followed    string          // A unit that is being followed in its state by this unit, if there is any, otherwise the empty string.
-	Path        dbus.ObjectPath // The unit object path
-	JobId       uint32          // If there is a job queued for the job unit the numeric job id, 0 otherwise
-	JobType     string          // The job type as string
-	JobPath     dbus.ObjectPath // The job object path
-}
-
-// ListUnits returns an array with all currently loaded units. Note that
-// units may be known by multiple names at the same time, and hence there might
-// be more unit names loaded than actual units behind them.
-func (c *Conn) ListUnits() ([]UnitStatus, error) {
-	result := make([][]interface{}, 0)
-	err := c.sysobj.Call("org.freedesktop.systemd1.Manager.ListUnits", 0).Store(&result)
-	if err != nil {
-		return nil, err
-	}
-
-	resultInterface := make([]interface{}, len(result))
-	for i := range result {
-		resultInterface[i] = result[i]
-	}
-
-	status := make([]UnitStatus, len(result))
-	statusInterface := make([]interface{}, len(status))
-	for i := range status {
-		statusInterface[i] = &status[i]
-	}
-
-	err = dbus.Store(resultInterface, statusInterface...)
-	if err != nil {
-		return nil, err
-	}
-
-	return status, nil
-}
-
-type UnitFile struct {
-	Path string
-	Type string
-}
-
-// ListUnitFiles returns an array of all available units on disk.
-func (c *Conn) ListUnitFiles() ([]UnitFile, error) {
-	result := make([][]interface{}, 0)
-	err := c.sysobj.Call("org.freedesktop.systemd1.Manager.ListUnitFiles", 0).Store(&result)
-	if err != nil {
-		return nil, err
-	}
-
-	resultInterface := make([]interface{}, len(result))
-	for i := range result {
-		resultInterface[i] = result[i]
-	}
-
-	files := make([]UnitFile, len(result))
-	fileInterface := make([]interface{}, len(files))
-	for i := range files {
-		fileInterface[i] = &files[i]
-	}
-
-	err = dbus.Store(resultInterface, fileInterface...)
-	if err != nil {
-		return nil, err
-	}
-
-	return files, nil
-}
-
-type LinkUnitFileChange EnableUnitFileChange
-
-// LinkUnitFiles() links unit files (that are located outside of the
-// usual unit search paths) into the unit search path.
-//
-// It takes a list of absolute paths to unit files to link and two
-// booleans. The first boolean controls whether the unit shall be
-// enabled for runtime only (true, /run), or persistently (false,
-// /etc).
-// The second controls whether symlinks pointing to other units shall
-// be replaced if necessary.
-//
-// This call returns a list of the changes made. The list consists of
-// structures with three strings: the type of the change (one of symlink
-// or unlink), the file name of the symlink and the destination of the
-// symlink.
-func (c *Conn) LinkUnitFiles(files []string, runtime bool, force bool) ([]LinkUnitFileChange, error) {
-	result := make([][]interface{}, 0)
-	err := c.sysobj.Call("org.freedesktop.systemd1.Manager.LinkUnitFiles", 0, files, runtime, force).Store(&result)
-	if err != nil {
-		return nil, err
-	}
-
-	resultInterface := make([]interface{}, len(result))
-	for i := range result {
-		resultInterface[i] = result[i]
-	}
-
-	changes := make([]LinkUnitFileChange, len(result))
-	changesInterface := make([]interface{}, len(changes))
-	for i := range changes {
-		changesInterface[i] = &changes[i]
-	}
-
-	err = dbus.Store(resultInterface, changesInterface...)
-	if err != nil {
-		return nil, err
-	}
-
-	return changes, nil
-}
-
-// EnableUnitFiles() may be used to enable one or more units in the system (by
-// creating symlinks to them in /etc or /run).
-//
-// It takes a list of unit files to enable (either just file names or full
-// absolute paths if the unit files are residing outside the usual unit
-// search paths), and two booleans: the first controls whether the unit shall
-// be enabled for runtime only (true, /run), or persistently (false, /etc).
-// The second one controls whether symlinks pointing to other units shall
-// be replaced if necessary.
-//
-// This call returns one boolean and an array with the changes made. The
-// boolean signals whether the unit files contained any enablement
-// information (i.e. an [Install]) section. The changes list consists of
-// structures with three strings: the type of the change (one of symlink
-// or unlink), the file name of the symlink and the destination of the
-// symlink.
-func (c *Conn) EnableUnitFiles(files []string, runtime bool, force bool) (bool, []EnableUnitFileChange, error) {
-	var carries_install_info bool
-
-	result := make([][]interface{}, 0)
-	err := c.sysobj.Call("org.freedesktop.systemd1.Manager.EnableUnitFiles", 0, files, runtime, force).Store(&carries_install_info, &result)
-	if err != nil {
-		return false, nil, err
-	}
-
-	resultInterface := make([]interface{}, len(result))
-	for i := range result {
-		resultInterface[i] = result[i]
-	}
-
-	changes := make([]EnableUnitFileChange, len(result))
-	changesInterface := make([]interface{}, len(changes))
-	for i := range changes {
-		changesInterface[i] = &changes[i]
-	}
-
-	err = dbus.Store(resultInterface, changesInterface...)
-	if err != nil {
-		return false, nil, err
-	}
-
-	return carries_install_info, changes, nil
-}
-
-type EnableUnitFileChange struct {
-	Type        string // Type of the change (one of symlink or unlink)
-	Filename    string // File name of the symlink
-	Destination string // Destination of the symlink
-}
-
-// DisableUnitFiles() may be used to disable one or more units in the system (by
-// removing symlinks to them from /etc or /run).
-//
-// It takes a list of unit files to disable (either just file names or full
-// absolute paths if the unit files are residing outside the usual unit
-// search paths), and one boolean: whether the unit was enabled for runtime
-// only (true, /run), or persistently (false, /etc).
-//
-// This call returns an array with the changes made. The changes list
-// consists of structures with three strings: the type of the change (one of
-// symlink or unlink), the file name of the symlink and the destination of the
-// symlink.
-func (c *Conn) DisableUnitFiles(files []string, runtime bool) ([]DisableUnitFileChange, error) {
-	result := make([][]interface{}, 0)
-	err := c.sysobj.Call("org.freedesktop.systemd1.Manager.DisableUnitFiles", 0, files, runtime).Store(&result)
-	if err != nil {
-		return nil, err
-	}
-
-	resultInterface := make([]interface{}, len(result))
-	for i := range result {
-		resultInterface[i] = result[i]
-	}
-
-	changes := make([]DisableUnitFileChange, len(result))
-	changesInterface := make([]interface{}, len(changes))
-	for i := range changes {
-		changesInterface[i] = &changes[i]
-	}
-
-	err = dbus.Store(resultInterface, changesInterface...)
-	if err != nil {
-		return nil, err
-	}
-
-	return changes, nil
-}
-
-type DisableUnitFileChange struct {
-	Type        string // Type of the change (one of symlink or unlink)
-	Filename    string // File name of the symlink
-	Destination string // Destination of the symlink
-}
-
-// Reload instructs systemd to scan for and reload unit files. This is
-// equivalent to a 'systemctl daemon-reload'.
-func (c *Conn) Reload() error {
-	return c.sysobj.Call("org.freedesktop.systemd1.Manager.Reload", 0).Store()
-}
-
-func unitPath(name string) dbus.ObjectPath {
-	return dbus.ObjectPath("/org/freedesktop/systemd1/unit/" + PathBusEscape(name))
-}

vendor/src/github.com/coreos/go-systemd/dbus/properties.go

@@ -1,218 +0,0 @@
-// Copyright 2015 CoreOS, Inc.
-//
-// 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 dbus
-
-import (
-	"github.com/godbus/dbus"
-)
-
-// From the systemd docs:
-//
-// The properties array of StartTransientUnit() may take many of the settings
-// that may also be configured in unit files. Not all parameters are currently
-// accepted though, but we plan to cover more properties with future release.
-// Currently you may set the Description, Slice and all dependency types of
-// units, as well as RemainAfterExit, ExecStart for service units,
-// TimeoutStopUSec and PIDs for scope units, and CPUAccounting, CPUShares,
-// BlockIOAccounting, BlockIOWeight, BlockIOReadBandwidth,
-// BlockIOWriteBandwidth, BlockIODeviceWeight, MemoryAccounting, MemoryLimit,
-// DevicePolicy, DeviceAllow for services/scopes/slices. These fields map
-// directly to their counterparts in unit files and as normal D-Bus object
-// properties. The exception here is the PIDs field of scope units which is
-// used for construction of the scope only and specifies the initial PIDs to
-// add to the scope object.
-
-type Property struct {
-	Name  string
-	Value dbus.Variant
-}
-
-type PropertyCollection struct {
-	Name       string
-	Properties []Property
-}
-
-type execStart struct {
-	Path             string   // the binary path to execute
-	Args             []string // an array with all arguments to pass to the executed command, starting with argument 0
-	UncleanIsFailure bool     // a boolean whether it should be considered a failure if the process exits uncleanly
-}
-
-// PropExecStart sets the ExecStart service property.  The first argument is a
-// slice with the binary path to execute followed by the arguments to pass to
-// the executed command. See
-// http://www.freedesktop.org/software/systemd/man/systemd.service.html#ExecStart=
-func PropExecStart(command []string, uncleanIsFailure bool) Property {
-	execStarts := []execStart{
-		execStart{
-			Path:             command[0],
-			Args:             command,
-			UncleanIsFailure: uncleanIsFailure,
-		},
-	}
-
-	return Property{
-		Name:  "ExecStart",
-		Value: dbus.MakeVariant(execStarts),
-	}
-}
-
-// PropRemainAfterExit sets the RemainAfterExit service property. See
-// http://www.freedesktop.org/software/systemd/man/systemd.service.html#RemainAfterExit=
-func PropRemainAfterExit(b bool) Property {
-	return Property{
-		Name:  "RemainAfterExit",
-		Value: dbus.MakeVariant(b),
-	}
-}
-
-// PropDescription sets the Description unit property. See
-// http://www.freedesktop.org/software/systemd/man/systemd.unit#Description=
-func PropDescription(desc string) Property {
-	return Property{
-		Name:  "Description",
-		Value: dbus.MakeVariant(desc),
-	}
-}
-
-func propDependency(name string, units []string) Property {
-	return Property{
-		Name:  name,
-		Value: dbus.MakeVariant(units),
-	}
-}
-
-// PropRequires sets the Requires unit property.  See
-// http://www.freedesktop.org/software/systemd/man/systemd.unit.html#Requires=
-func PropRequires(units ...string) Property {
-	return propDependency("Requires", units)
-}
-
-// PropRequiresOverridable sets the RequiresOverridable unit property.  See
-// http://www.freedesktop.org/software/systemd/man/systemd.unit.html#RequiresOverridable=
-func PropRequiresOverridable(units ...string) Property {
-	return propDependency("RequiresOverridable", units)
-}
-
-// PropRequisite sets the Requisite unit property.  See
-// http://www.freedesktop.org/software/systemd/man/systemd.unit.html#Requisite=
-func PropRequisite(units ...string) Property {
-	return propDependency("Requisite", units)
-}
-
-// PropRequisiteOverridable sets the RequisiteOverridable unit property.  See
-// http://www.freedesktop.org/software/systemd/man/systemd.unit.html#RequisiteOverridable=
-func PropRequisiteOverridable(units ...string) Property {
-	return propDependency("RequisiteOverridable", units)
-}
-
-// PropWants sets the Wants unit property.  See
-// http://www.freedesktop.org/software/systemd/man/systemd.unit.html#Wants=
-func PropWants(units ...string) Property {
-	return propDependency("Wants", units)
-}
-
-// PropBindsTo sets the BindsTo unit property.  See
-// http://www.freedesktop.org/software/systemd/man/systemd.unit.html#BindsTo=
-func PropBindsTo(units ...string) Property {
-	return propDependency("BindsTo", units)
-}
-
-// PropRequiredBy sets the RequiredBy unit property.  See
-// http://www.freedesktop.org/software/systemd/man/systemd.unit.html#RequiredBy=
-func PropRequiredBy(units ...string) Property {
-	return propDependency("RequiredBy", units)
-}
-
-// PropRequiredByOverridable sets the RequiredByOverridable unit property.  See
-// http://www.freedesktop.org/software/systemd/man/systemd.unit.html#RequiredByOverridable=
-func PropRequiredByOverridable(units ...string) Property {
-	return propDependency("RequiredByOverridable", units)
-}
-
-// PropWantedBy sets the WantedBy unit property.  See
-// http://www.freedesktop.org/software/systemd/man/systemd.unit.html#WantedBy=
-func PropWantedBy(units ...string) Property {
-	return propDependency("WantedBy", units)
-}
-
-// PropBoundBy sets the BoundBy unit property.  See
-// http://www.freedesktop.org/software/systemd/main/systemd.unit.html#BoundBy=
-func PropBoundBy(units ...string) Property {
-	return propDependency("BoundBy", units)
-}
-
-// PropConflicts sets the Conflicts unit property.  See
-// http://www.freedesktop.org/software/systemd/man/systemd.unit.html#Conflicts=
-func PropConflicts(units ...string) Property {
-	return propDependency("Conflicts", units)
-}
-
-// PropConflictedBy sets the ConflictedBy unit property.  See
-// http://www.freedesktop.org/software/systemd/man/systemd.unit.html#ConflictedBy=
-func PropConflictedBy(units ...string) Property {
-	return propDependency("ConflictedBy", units)
-}
-
-// PropBefore sets the Before unit property.  See
-// http://www.freedesktop.org/software/systemd/man/systemd.unit.html#Before=
-func PropBefore(units ...string) Property {
-	return propDependency("Before", units)
-}
-
-// PropAfter sets the After unit property.  See
-// http://www.freedesktop.org/software/systemd/man/systemd.unit.html#After=
-func PropAfter(units ...string) Property {
-	return propDependency("After", units)
-}
-
-// PropOnFailure sets the OnFailure unit property.  See
-// http://www.freedesktop.org/software/systemd/man/systemd.unit.html#OnFailure=
-func PropOnFailure(units ...string) Property {
-	return propDependency("OnFailure", units)
-}
-
-// PropTriggers sets the Triggers unit property.  See
-// http://www.freedesktop.org/software/systemd/man/systemd.unit.html#Triggers=
-func PropTriggers(units ...string) Property {
-	return propDependency("Triggers", units)
-}
-
-// PropTriggeredBy sets the TriggeredBy unit property.  See
-// http://www.freedesktop.org/software/systemd/man/systemd.unit.html#TriggeredBy=
-func PropTriggeredBy(units ...string) Property {
-	return propDependency("TriggeredBy", units)
-}
-
-// PropPropagatesReloadTo sets the PropagatesReloadTo unit property.  See
-// http://www.freedesktop.org/software/systemd/man/systemd.unit.html#PropagatesReloadTo=
-func PropPropagatesReloadTo(units ...string) Property {
-	return propDependency("PropagatesReloadTo", units)
-}
-
-// PropRequiresMountsFor sets the RequiresMountsFor unit property.  See
-// http://www.freedesktop.org/software/systemd/man/systemd.unit.html#RequiresMountsFor=
-func PropRequiresMountsFor(units ...string) Property {
-	return propDependency("RequiresMountsFor", units)
-}
-
-// PropSlice sets the Slice unit property.  See
-// http://www.freedesktop.org/software/systemd/man/systemd.resource-control.html#Slice=
-func PropSlice(slice string) Property {
-	return Property{
-		Name:  "Slice",
-		Value: dbus.MakeVariant(slice),
-	}
-}

vendor/src/github.com/coreos/go-systemd/dbus/set.go

@@ -1,47 +0,0 @@
-// Copyright 2015 CoreOS, Inc.
-//
-// 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 dbus
-
-type set struct {
-	data map[string]bool
-}
-
-func (s *set) Add(value string) {
-	s.data[value] = true
-}
-
-func (s *set) Remove(value string) {
-	delete(s.data, value)
-}
-
-func (s *set) Contains(value string) (exists bool) {
-	_, exists = s.data[value]
-	return
-}
-
-func (s *set) Length() int {
-	return len(s.data)
-}
-
-func (s *set) Values() (values []string) {
-	for val, _ := range s.data {
-		values = append(values, val)
-	}
-	return
-}
-
-func newSet() *set {
-	return &set{make(map[string]bool)}
-}

vendor/src/github.com/coreos/go-systemd/dbus/subscription.go

@@ -1,250 +0,0 @@
-// Copyright 2015 CoreOS, Inc.
-//
-// 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 dbus
-
-import (
-	"errors"
-	"time"
-
-	"github.com/godbus/dbus"
-)
-
-const (
-	cleanIgnoreInterval = int64(10 * time.Second)
-	ignoreInterval      = int64(30 * time.Millisecond)
-)
-
-// Subscribe sets up this connection to subscribe to all systemd dbus events.
-// This is required before calling SubscribeUnits. When the connection closes
-// systemd will automatically stop sending signals so there is no need to
-// explicitly call Unsubscribe().
-func (c *Conn) Subscribe() error {
-	c.sigconn.BusObject().Call("org.freedesktop.DBus.AddMatch", 0,
-		"type='signal',interface='org.freedesktop.systemd1.Manager',member='UnitNew'")
-	c.sigconn.BusObject().Call("org.freedesktop.DBus.AddMatch", 0,
-		"type='signal',interface='org.freedesktop.DBus.Properties',member='PropertiesChanged'")
-
-	err := c.sigobj.Call("org.freedesktop.systemd1.Manager.Subscribe", 0).Store()
-	if err != nil {
-		return err
-	}
-
-	return nil
-}
-
-// Unsubscribe this connection from systemd dbus events.
-func (c *Conn) Unsubscribe() error {
-	err := c.sigobj.Call("org.freedesktop.systemd1.Manager.Unsubscribe", 0).Store()
-	if err != nil {
-		return err
-	}
-
-	return nil
-}
-
-func (c *Conn) dispatch() {
-	ch := make(chan *dbus.Signal, signalBuffer)
-
-	c.sigconn.Signal(ch)
-
-	go func() {
-		for {
-			signal, ok := <-ch
-			if !ok {
-				return
-			}
-
-			if signal.Name == "org.freedesktop.systemd1.Manager.JobRemoved" {
-				c.jobComplete(signal)
-			}
-
-			if c.subscriber.updateCh == nil {
-				continue
-			}
-
-			var unitPath dbus.ObjectPath
-			switch signal.Name {
-			case "org.freedesktop.systemd1.Manager.JobRemoved":
-				unitName := signal.Body[2].(string)
-				c.sysobj.Call("org.freedesktop.systemd1.Manager.GetUnit", 0, unitName).Store(&unitPath)
-			case "org.freedesktop.systemd1.Manager.UnitNew":
-				unitPath = signal.Body[1].(dbus.ObjectPath)
-			case "org.freedesktop.DBus.Properties.PropertiesChanged":
-				if signal.Body[0].(string) == "org.freedesktop.systemd1.Unit" {
-					unitPath = signal.Path
-				}
-			}
-
-			if unitPath == dbus.ObjectPath("") {
-				continue
-			}
-
-			c.sendSubStateUpdate(unitPath)
-		}
-	}()
-}
-
-// Returns two unbuffered channels which will receive all changed units every
-// interval.  Deleted units are sent as nil.
-func (c *Conn) SubscribeUnits(interval time.Duration) (<-chan map[string]*UnitStatus, <-chan error) {
-	return c.SubscribeUnitsCustom(interval, 0, func(u1, u2 *UnitStatus) bool { return *u1 != *u2 }, nil)
-}
-
-// SubscribeUnitsCustom is like SubscribeUnits but lets you specify the buffer
-// size of the channels, the comparison function for detecting changes and a filter
-// function for cutting down on the noise that your channel receives.
-func (c *Conn) SubscribeUnitsCustom(interval time.Duration, buffer int, isChanged func(*UnitStatus, *UnitStatus) bool, filterUnit func(string) bool) (<-chan map[string]*UnitStatus, <-chan error) {
-	old := make(map[string]*UnitStatus)
-	statusChan := make(chan map[string]*UnitStatus, buffer)
-	errChan := make(chan error, buffer)
-
-	go func() {
-		for {
-			timerChan := time.After(interval)
-
-			units, err := c.ListUnits()
-			if err == nil {
-				cur := make(map[string]*UnitStatus)
-				for i := range units {
-					if filterUnit != nil && filterUnit(units[i].Name) {
-						continue
-					}
-					cur[units[i].Name] = &units[i]
-				}
-
-				// add all new or changed units
-				changed := make(map[string]*UnitStatus)
-				for n, u := range cur {
-					if oldU, ok := old[n]; !ok || isChanged(oldU, u) {
-						changed[n] = u
-					}
-					delete(old, n)
-				}
-
-				// add all deleted units
-				for oldN := range old {
-					changed[oldN] = nil
-				}
-
-				old = cur
-
-				if len(changed) != 0 {
-					statusChan <- changed
-				}
-			} else {
-				errChan <- err
-			}
-
-			<-timerChan
-		}
-	}()
-
-	return statusChan, errChan
-}
-
-type SubStateUpdate struct {
-	UnitName string
-	SubState string
-}
-
-// SetSubStateSubscriber writes to updateCh when any unit's substate changes.
-// Although this writes to updateCh on every state change, the reported state
-// may be more recent than the change that generated it (due to an unavoidable
-// race in the systemd dbus interface).  That is, this method provides a good
-// way to keep a current view of all units' states, but is not guaranteed to
-// show every state transition they go through.  Furthermore, state changes
-// will only be written to the channel with non-blocking writes.  If updateCh
-// is full, it attempts to write an error to errCh; if errCh is full, the error
-// passes silently.
-func (c *Conn) SetSubStateSubscriber(updateCh chan<- *SubStateUpdate, errCh chan<- error) {
-	c.subscriber.Lock()
-	defer c.subscriber.Unlock()
-	c.subscriber.updateCh = updateCh
-	c.subscriber.errCh = errCh
-}
-
-func (c *Conn) sendSubStateUpdate(path dbus.ObjectPath) {
-	c.subscriber.Lock()
-	defer c.subscriber.Unlock()
-
-	if c.shouldIgnore(path) {
-		return
-	}
-
-	info, err := c.GetUnitProperties(string(path))
-	if err != nil {
-		select {
-		case c.subscriber.errCh <- err:
-		default:
-		}
-	}
-
-	name := info["Id"].(string)
-	substate := info["SubState"].(string)
-
-	update := &SubStateUpdate{name, substate}
-	select {
-	case c.subscriber.updateCh <- update:
-	default:
-		select {
-		case c.subscriber.errCh <- errors.New("update channel full!"):
-		default:
-		}
-	}
-
-	c.updateIgnore(path, info)
-}
-
-// The ignore functions work around a wart in the systemd dbus interface.
-// Requesting the properties of an unloaded unit will cause systemd to send a
-// pair of UnitNew/UnitRemoved signals.  Because we need to get a unit's
-// properties on UnitNew (as that's the only indication of a new unit coming up
-// for the first time), we would enter an infinite loop if we did not attempt
-// to detect and ignore these spurious signals.  The signal themselves are
-// indistinguishable from relevant ones, so we (somewhat hackishly) ignore an
-// unloaded unit's signals for a short time after requesting its properties.
-// This means that we will miss e.g. a transient unit being restarted
-// *immediately* upon failure and also a transient unit being started
-// immediately after requesting its status (with systemctl status, for example,
-// because this causes a UnitNew signal to be sent which then causes us to fetch
-// the properties).
-
-func (c *Conn) shouldIgnore(path dbus.ObjectPath) bool {
-	t, ok := c.subscriber.ignore[path]
-	return ok && t >= time.Now().UnixNano()
-}
-
-func (c *Conn) updateIgnore(path dbus.ObjectPath, info map[string]interface{}) {
-	c.cleanIgnore()
-
-	// unit is unloaded - it will trigger bad systemd dbus behavior
-	if info["LoadState"].(string) == "not-found" {
-		c.subscriber.ignore[path] = time.Now().UnixNano() + ignoreInterval
-	}
-}
-
-// without this, ignore would grow unboundedly over time
-func (c *Conn) cleanIgnore() {
-	now := time.Now().UnixNano()
-	if c.subscriber.cleanIgnore < now {
-		c.subscriber.cleanIgnore = now + cleanIgnoreInterval
-
-		for p, t := range c.subscriber.ignore {
-			if t < now {
-				delete(c.subscriber.ignore, p)
-			}
-		}
-	}
-}

vendor/src/github.com/coreos/go-systemd/dbus/subscription_set.go

@@ -1,57 +0,0 @@
-// Copyright 2015 CoreOS, Inc.
-//
-// 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 dbus
-
-import (
-	"time"
-)
-
-// SubscriptionSet returns a subscription set which is like conn.Subscribe but
-// can filter to only return events for a set of units.
-type SubscriptionSet struct {
-	*set
-	conn *Conn
-}
-
-func (s *SubscriptionSet) filter(unit string) bool {
-	return !s.Contains(unit)
-}
-
-// Subscribe starts listening for dbus events for all of the units in the set.
-// Returns channels identical to conn.SubscribeUnits.
-func (s *SubscriptionSet) Subscribe() (<-chan map[string]*UnitStatus, <-chan error) {
-	// TODO: Make fully evented by using systemd 209 with properties changed values
-	return s.conn.SubscribeUnitsCustom(time.Second, 0,
-		mismatchUnitStatus,
-		func(unit string) bool { return s.filter(unit) },
-	)
-}
-
-// NewSubscriptionSet returns a new subscription set.
-func (conn *Conn) NewSubscriptionSet() *SubscriptionSet {
-	return &SubscriptionSet{newSet(), conn}
-}
-
-// mismatchUnitStatus returns true if the provided UnitStatus objects
-// are not equivalent. false is returned if the objects are equivalent.
-// Only the Name, Description and state-related fields are used in
-// the comparison.
-func mismatchUnitStatus(u1, u2 *UnitStatus) bool {
-	return u1.Name != u2.Name ||
-		u1.Description != u2.Description ||
-		u1.LoadState != u2.LoadState ||
-		u1.ActiveState != u2.ActiveState ||
-		u1.SubState != u2.SubState
-}

vendor/src/github.com/coreos/go-systemd/util/util.go

@@ -1,270 +0,0 @@
-// Copyright 2015 CoreOS, Inc.
-//
-// 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 contains utility functions related to systemd that applications
-// can use to check things like whether systemd is running.  Note that some of
-// these functions attempt to manually load systemd libraries at runtime rather
-// than linking against them.
-package util
-
-// #cgo LDFLAGS: -ldl
-// #include <stdlib.h>
-// #include <dlfcn.h>
-// #include <sys/types.h>
-// #include <unistd.h>
-//
-// int
-// my_sd_pid_get_owner_uid(void *f, pid_t pid, uid_t *uid)
-// {
-//   int (*sd_pid_get_owner_uid)(pid_t, uid_t *);
-//
-//   sd_pid_get_owner_uid = (int (*)(pid_t, uid_t *))f;
-//   return sd_pid_get_owner_uid(pid, uid);
-// }
-//
-// int
-// my_sd_pid_get_unit(void *f, pid_t pid, char **unit)
-// {
-//   int (*sd_pid_get_unit)(pid_t, char **);
-//
-//   sd_pid_get_unit = (int (*)(pid_t, char **))f;
-//   return sd_pid_get_unit(pid, unit);
-// }
-//
-// int
-// my_sd_pid_get_slice(void *f, pid_t pid, char **slice)
-// {
-//   int (*sd_pid_get_slice)(pid_t, char **);
-//
-//   sd_pid_get_slice = (int (*)(pid_t, char **))f;
-//   return sd_pid_get_slice(pid, slice);
-// }
-//
-// int
-// am_session_leader()
-// {
-//   return (getsid(0) == getpid());
-// }
-import "C"
-import (
-	"errors"
-	"fmt"
-	"io/ioutil"
-	"os"
-	"strings"
-	"syscall"
-	"unsafe"
-)
-
-var ErrSoNotFound = errors.New("unable to open a handle to libsystemd")
-
-// libHandle represents an open handle to the systemd C library
-type libHandle struct {
-	handle  unsafe.Pointer
-	libname string
-}
-
-func (h *libHandle) Close() error {
-	if r := C.dlclose(h.handle); r != 0 {
-		return fmt.Errorf("error closing %v: %d", h.libname, r)
-	}
-	return nil
-}
-
-// getHandle tries to get a handle to a systemd library (.so), attempting to
-// access it by several different names and returning the first that is
-// successfully opened. Callers are responsible for closing the handler.
-// If no library can be successfully opened, an error is returned.
-func getHandle() (*libHandle, error) {
-	for _, name := range []string{
-		// systemd < 209
-		"libsystemd-login.so",
-		"libsystemd-login.so.0",
-
-		// systemd >= 209 merged libsystemd-login into libsystemd proper
-		"libsystemd.so",
-		"libsystemd.so.0",
-	} {
-		libname := C.CString(name)
-		defer C.free(unsafe.Pointer(libname))
-		handle := C.dlopen(libname, C.RTLD_LAZY)
-		if handle != nil {
-			h := &libHandle{
-				handle:  handle,
-				libname: name,
-			}
-			return h, nil
-		}
-	}
-	return nil, ErrSoNotFound
-}
-
-// GetRunningSlice attempts to retrieve the name of the systemd slice in which
-// the current process is running.
-// This function is a wrapper around the libsystemd C library; if it cannot be
-// opened, an error is returned.
-func GetRunningSlice() (slice string, err error) {
-	var h *libHandle
-	h, err = getHandle()
-	if err != nil {
-		return
-	}
-	defer func() {
-		if err1 := h.Close(); err1 != nil {
-			err = err1
-		}
-	}()
-
-	sym := C.CString("sd_pid_get_slice")
-	defer C.free(unsafe.Pointer(sym))
-	sd_pid_get_slice := C.dlsym(h.handle, sym)
-	if sd_pid_get_slice == nil {
-		err = fmt.Errorf("error resolving sd_pid_get_slice function")
-		return
-	}
-
-	var s string
-	sl := C.CString(s)
-	defer C.free(unsafe.Pointer(sl))
-
-	ret := C.my_sd_pid_get_slice(sd_pid_get_slice, 0, &sl)
-	if ret < 0 {
-		err = fmt.Errorf("error calling sd_pid_get_slice: %v", syscall.Errno(-ret))
-		return
-	}
-
-	return C.GoString(sl), nil
-}
-
-// RunningFromSystemService tries to detect whether the current process has
-// been invoked from a system service. The condition for this is whether the
-// process is _not_ a user process. User processes are those running in session
-// scopes or under per-user `systemd --user` instances.
-//
-// To avoid false positives on systems without `pam_systemd` (which is
-// responsible for creating user sessions), this function also uses a heuristic
-// to detect whether it's being invoked from a session leader process. This is
-// the case if the current process is executed directly from a service file
-// (e.g. with `ExecStart=/this/cmd`). Note that this heuristic will fail if the
-// command is instead launched in a subshell or similar so that it is not
-// session leader (e.g. `ExecStart=/bin/bash -c "/this/cmd"`)
-//
-// This function is a wrapper around the libsystemd C library; if this is
-// unable to successfully open a handle to the library for any reason (e.g. it
-// cannot be found), an errr will be returned
-func RunningFromSystemService() (ret bool, err error) {
-	var h *libHandle
-	h, err = getHandle()
-	if err != nil {
-		return
-	}
-	defer func() {
-		if err1 := h.Close(); err1 != nil {
-			err = err1
-		}
-	}()
-
-	sym := C.CString("sd_pid_get_owner_uid")
-	defer C.free(unsafe.Pointer(sym))
-	sd_pid_get_owner_uid := C.dlsym(h.handle, sym)
-	if sd_pid_get_owner_uid == nil {
-		err = fmt.Errorf("error resolving sd_pid_get_owner_uid function")
-		return
-	}
-
-	var uid C.uid_t
-	errno := C.my_sd_pid_get_owner_uid(sd_pid_get_owner_uid, 0, &uid)
-	serrno := syscall.Errno(-errno)
-	// when we're running from a unit file, sd_pid_get_owner_uid returns
-	// ENOENT (systemd <220) or ENXIO (systemd >=220)
-	switch {
-	case errno >= 0:
-		ret = false
-	case serrno == syscall.ENOENT, serrno == syscall.ENXIO:
-		// Since the implementation of sessions in systemd relies on
-		// the `pam_systemd` module, using the sd_pid_get_owner_uid
-		// heuristic alone can result in false positives if that module
-		// (or PAM itself) is not present or properly configured on the
-		// system. As such, we also check if we're the session leader,
-		// which should be the case if we're invoked from a unit file,
-		// but not if e.g. we're invoked from the command line from a
-		// user's login session
-		ret = C.am_session_leader() == 1
-	default:
-		err = fmt.Errorf("error calling sd_pid_get_owner_uid: %v", syscall.Errno(-errno))
-	}
-	return
-}
-
-// CurrentUnitName attempts to retrieve the name of the systemd system unit
-// from which the calling process has been invoked. It wraps the systemd
-// `sd_pid_get_unit` call, with the same caveat: for processes not part of a
-// systemd system unit, this function will return an error.
-func CurrentUnitName() (unit string, err error) {
-	var h *libHandle
-	h, err = getHandle()
-	if err != nil {
-		return
-	}
-	defer func() {
-		if err1 := h.Close(); err1 != nil {
-			err = err1
-		}
-	}()
-
-	sym := C.CString("sd_pid_get_unit")
-	defer C.free(unsafe.Pointer(sym))
-	sd_pid_get_unit := C.dlsym(h.handle, sym)
-	if sd_pid_get_unit == nil {
-		err = fmt.Errorf("error resolving sd_pid_get_unit function")
-		return
-	}
-
-	var s string
-	u := C.CString(s)
-	defer C.free(unsafe.Pointer(u))
-
-	ret := C.my_sd_pid_get_unit(sd_pid_get_unit, 0, &u)
-	if ret < 0 {
-		err = fmt.Errorf("error calling sd_pid_get_unit: %v", syscall.Errno(-ret))
-		return
-	}
-
-	unit = C.GoString(u)
-	return
-}
-
-// IsRunningSystemd checks whether the host was booted with systemd as its init
-// system. This functions similarly to systemd's `sd_booted(3)`: internally, it
-// checks whether /run/systemd/system/ exists and is a directory.
-// http://www.freedesktop.org/software/systemd/man/sd_booted.html
-func IsRunningSystemd() bool {
-	fi, err := os.Lstat("/run/systemd/system")
-	if err != nil {
-		return false
-	}
-	return fi.IsDir()
-}
-
-// GetMachineID returns a host's 128-bit machine ID as a string. This functions
-// similarly to systemd's `sd_id128_get_machine`: internally, it simply reads
-// the contents of /etc/machine-id
-// http://www.freedesktop.org/software/systemd/man/sd_id128_get_machine.html
-func GetMachineID() (string, error) {
-	machineID, err := ioutil.ReadFile("/etc/machine-id")
-	if err != nil {
-		return "", fmt.Errorf("failed to read /etc/machine-id: %v", err)
-	}
-	return strings.TrimSpace(string(machineID)), nil
-}

vendor/src/github.com/docker/docker/pkg/mount/flags.go

@@ -1,92 +0,0 @@
-package mount
-
-import (
-	"fmt"
-	"strings"
-)
-
-// Parse fstab type mount options into mount() flags
-// and device specific data
-func parseOptions(options string) (int, string) {
-	var (
-		flag int
-		data []string
-	)
-
-	flags := map[string]struct {
-		clear bool
-		flag  int
-	}{
-		"defaults":      {false, 0},
-		"ro":            {false, RDONLY},
-		"rw":            {true, RDONLY},
-		"suid":          {true, NOSUID},
-		"nosuid":        {false, NOSUID},
-		"dev":           {true, NODEV},
-		"nodev":         {false, NODEV},
-		"exec":          {true, NOEXEC},
-		"noexec":        {false, NOEXEC},
-		"sync":          {false, SYNCHRONOUS},
-		"async":         {true, SYNCHRONOUS},
-		"dirsync":       {false, DIRSYNC},
-		"remount":       {false, REMOUNT},
-		"mand":          {false, MANDLOCK},
-		"nomand":        {true, MANDLOCK},
-		"atime":         {true, NOATIME},
-		"noatime":       {false, NOATIME},
-		"diratime":      {true, NODIRATIME},
-		"nodiratime":    {false, NODIRATIME},
-		"bind":          {false, BIND},
-		"rbind":         {false, RBIND},
-		"unbindable":    {false, UNBINDABLE},
-		"runbindable":   {false, RUNBINDABLE},
-		"private":       {false, PRIVATE},
-		"rprivate":      {false, RPRIVATE},
-		"shared":        {false, SHARED},
-		"rshared":       {false, RSHARED},
-		"slave":         {false, SLAVE},
-		"rslave":        {false, RSLAVE},
-		"relatime":      {false, RELATIME},
-		"norelatime":    {true, RELATIME},
-		"strictatime":   {false, STRICTATIME},
-		"nostrictatime": {true, STRICTATIME},
-	}
-
-	for _, o := range strings.Split(options, ",") {
-		// If the option does not exist in the flags table or the flag
-		// is not supported on the platform,
-		// then it is a data value for a specific fs type
-		if f, exists := flags[o]; exists && f.flag != 0 {
-			if f.clear {
-				flag &= ^f.flag
-			} else {
-				flag |= f.flag
-			}
-		} else {
-			data = append(data, o)
-		}
-	}
-	return flag, strings.Join(data, ",")
-}
-
-// ParseTmpfsOptions parse fstab type mount options into flags and data
-func ParseTmpfsOptions(options string) (int, string, error) {
-	flags, data := parseOptions(options)
-	validFlags := map[string]bool{
-		"":          true,
-		"size":      true,
-		"mode":      true,
-		"uid":       true,
-		"gid":       true,
-		"nr_inodes": true,
-		"nr_blocks": true,
-		"mpol":      true,
-	}
-	for _, o := range strings.Split(data, ",") {
-		opt := strings.SplitN(o, "=", 2)
-		if !validFlags[opt[0]] {
-			return 0, "", fmt.Errorf("Invalid tmpfs option %q", opt)
-		}
-	}
-	return flags, data, nil
-}

vendor/src/github.com/docker/docker/pkg/mount/flags_freebsd.go

@@ -1,48 +0,0 @@
-// +build freebsd,cgo
-
-package mount
-
-/*
-#include <sys/mount.h>
-*/
-import "C"
-
-const (
-	// RDONLY will mount the filesystem as read-only.
-	RDONLY = C.MNT_RDONLY
-
-	// NOSUID will not allow set-user-identifier or set-group-identifier bits to
-	// take effect.
-	NOSUID = C.MNT_NOSUID
-
-	// NOEXEC will not allow execution of any binaries on the mounted file system.
-	NOEXEC = C.MNT_NOEXEC
-
-	// SYNCHRONOUS will allow any I/O to the file system to be done synchronously.
-	SYNCHRONOUS = C.MNT_SYNCHRONOUS
-
-	// NOATIME will not update the file access time when reading from a file.
-	NOATIME = C.MNT_NOATIME
-)
-
-// These flags are unsupported.
-const (
-	BIND        = 0
-	DIRSYNC     = 0
-	MANDLOCK    = 0
-	NODEV       = 0
-	NODIRATIME  = 0
-	UNBINDABLE  = 0
-	RUNBINDABLE = 0
-	PRIVATE     = 0
-	RPRIVATE    = 0
-	SHARED      = 0
-	RSHARED     = 0
-	SLAVE       = 0
-	RSLAVE      = 0
-	RBIND       = 0
-	RELATIVE    = 0
-	RELATIME    = 0
-	REMOUNT     = 0
-	STRICTATIME = 0
-)

vendor/src/github.com/docker/docker/pkg/mount/flags_linux.go

@@ -1,85 +0,0 @@
-package mount
-
-import (
-	"syscall"
-)
-
-const (
-	// RDONLY will mount the file system read-only.
-	RDONLY = syscall.MS_RDONLY
-
-	// NOSUID will not allow set-user-identifier or set-group-identifier bits to
-	// take effect.
-	NOSUID = syscall.MS_NOSUID
-
-	// NODEV will not interpret character or block special devices on the file
-	// system.
-	NODEV = syscall.MS_NODEV
-
-	// NOEXEC will not allow execution of any binaries on the mounted file system.
-	NOEXEC = syscall.MS_NOEXEC
-
-	// SYNCHRONOUS will allow I/O to the file system to be done synchronously.
-	SYNCHRONOUS = syscall.MS_SYNCHRONOUS
-
-	// DIRSYNC will force all directory updates within the file system to be done
-	// synchronously. This affects the following system calls: create, link,
-	// unlink, symlink, mkdir, rmdir, mknod and rename.
-	DIRSYNC = syscall.MS_DIRSYNC
-
-	// REMOUNT will attempt to remount an already-mounted file system. This is
-	// commonly used to change the mount flags for a file system, especially to
-	// make a readonly file system writeable. It does not change device or mount
-	// point.
-	REMOUNT = syscall.MS_REMOUNT
-
-	// MANDLOCK will force mandatory locks on a filesystem.
-	MANDLOCK = syscall.MS_MANDLOCK
-
-	// NOATIME will not update the file access time when reading from a file.
-	NOATIME = syscall.MS_NOATIME
-
-	// NODIRATIME will not update the directory access time.
-	NODIRATIME = syscall.MS_NODIRATIME
-
-	// BIND remounts a subtree somewhere else.
-	BIND = syscall.MS_BIND
-
-	// RBIND remounts a subtree and all possible submounts somewhere else.
-	RBIND = syscall.MS_BIND | syscall.MS_REC
-
-	// UNBINDABLE creates a mount which cannot be cloned through a bind operation.
-	UNBINDABLE = syscall.MS_UNBINDABLE
-
-	// RUNBINDABLE marks the entire mount tree as UNBINDABLE.
-	RUNBINDABLE = syscall.MS_UNBINDABLE | syscall.MS_REC
-
-	// PRIVATE creates a mount which carries no propagation abilities.
-	PRIVATE = syscall.MS_PRIVATE
-
-	// RPRIVATE marks the entire mount tree as PRIVATE.
-	RPRIVATE = syscall.MS_PRIVATE | syscall.MS_REC
-
-	// SLAVE creates a mount which receives propagation from its master, but not
-	// vice versa.
-	SLAVE = syscall.MS_SLAVE
-
-	// RSLAVE marks the entire mount tree as SLAVE.
-	RSLAVE = syscall.MS_SLAVE | syscall.MS_REC
-
-	// SHARED creates a mount which provides the ability to create mirrors of
-	// that mount such that mounts and unmounts within any of the mirrors
-	// propagate to the other mirrors.
-	SHARED = syscall.MS_SHARED
-
-	// RSHARED marks the entire mount tree as SHARED.
-	RSHARED = syscall.MS_SHARED | syscall.MS_REC
-
-	// RELATIME updates inode access times relative to modify or change time.
-	RELATIME = syscall.MS_RELATIME
-
-	// STRICTATIME allows to explicitly request full atime updates.  This makes
-	// it possible for the kernel to default to relatime or noatime but still
-	// allow userspace to override it.
-	STRICTATIME = syscall.MS_STRICTATIME
-)

vendor/src/github.com/docker/docker/pkg/mount/flags_unsupported.go

@@ -1,30 +0,0 @@
-// +build !linux,!freebsd freebsd,!cgo
-
-package mount
-
-// These flags are unsupported.
-const (
-	BIND        = 0
-	DIRSYNC     = 0
-	MANDLOCK    = 0
-	NOATIME     = 0
-	NODEV       = 0
-	NODIRATIME  = 0
-	NOEXEC      = 0
-	NOSUID      = 0
-	UNBINDABLE  = 0
-	RUNBINDABLE = 0
-	PRIVATE     = 0
-	RPRIVATE    = 0
-	SHARED      = 0
-	RSHARED     = 0
-	SLAVE       = 0
-	RSLAVE      = 0
-	RBIND       = 0
-	RELATIME    = 0
-	RELATIVE    = 0
-	REMOUNT     = 0
-	STRICTATIME = 0
-	SYNCHRONOUS = 0
-	RDONLY      = 0
-)

vendor/src/github.com/docker/docker/pkg/mount/mount.go

@@ -1,74 +0,0 @@
-package mount
-
-import (
-	"time"
-)
-
-// GetMounts retrieves a list of mounts for the current running process.
-func GetMounts() ([]*Info, error) {
-	return parseMountTable()
-}
-
-// Mounted looks at /proc/self/mountinfo to determine of the specified
-// mountpoint has been mounted
-func Mounted(mountpoint string) (bool, error) {
-	entries, err := parseMountTable()
-	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
-// flags.go for supported option flags.
-func Mount(device, target, mType, options string) error {
-	flag, _ := parseOptions(options)
-	if flag&REMOUNT != REMOUNT {
-		if mounted, err := Mounted(target); err != nil || mounted {
-			return err
-		}
-	}
-	return ForceMount(device, target, mType, options)
-}
-
-// ForceMount will mount a filesystem according to the specified configuration,
-// *regardless* if the target path is not already mounted. Options must be
-// specified like the mount or fstab unix commands: "opt1=val1,opt2=val2". See
-// flags.go for supported option flags.
-func ForceMount(device, target, mType, options string) error {
-	flag, data := parseOptions(options)
-	if err := mount(device, target, mType, uintptr(flag), data); err != nil {
-		return err
-	}
-	return nil
-}
-
-// Unmount will unmount the target filesystem, so long as it is mounted.
-func Unmount(target string) error {
-	if mounted, err := Mounted(target); err != nil || !mounted {
-		return err
-	}
-	return ForceUnmount(target)
-}
-
-// ForceUnmount will force an unmount of the target filesystem, regardless if
-// it is mounted or not.
-func ForceUnmount(target string) (err error) {
-	// Simple retry logic for unmount
-	for i := 0; i < 10; i++ {
-		if err = unmount(target, 0); err == nil {
-			return nil
-		}
-		time.Sleep(100 * time.Millisecond)
-	}
-	return
-}

vendor/src/github.com/docker/docker/pkg/mount/mounter_freebsd.go

@@ -1,59 +0,0 @@
-package mount
-
-/*
-#include <errno.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/_iovec.h>
-#include <sys/mount.h>
-#include <sys/param.h>
-*/
-import "C"
-
-import (
-	"fmt"
-	"strings"
-	"syscall"
-	"unsafe"
-)
-
-func allocateIOVecs(options []string) []C.struct_iovec {
-	out := make([]C.struct_iovec, len(options))
-	for i, option := range options {
-		out[i].iov_base = unsafe.Pointer(C.CString(option))
-		out[i].iov_len = C.size_t(len(option) + 1)
-	}
-	return out
-}
-
-func mount(device, target, mType string, flag uintptr, data string) error {
-	isNullFS := false
-
-	xs := strings.Split(data, ",")
-	for _, x := range xs {
-		if x == "bind" {
-			isNullFS = true
-		}
-	}
-
-	options := []string{"fspath", target}
-	if isNullFS {
-		options = append(options, "fstype", "nullfs", "target", device)
-	} else {
-		options = append(options, "fstype", mType, "from", device)
-	}
-	rawOptions := allocateIOVecs(options)
-	for _, rawOption := range rawOptions {
-		defer C.free(rawOption.iov_base)
-	}
-
-	if errno := C.nmount(&rawOptions[0], C.uint(len(options)), C.int(flag)); errno != 0 {
-		reason := C.GoString(C.strerror(*C.__error()))
-		return fmt.Errorf("Failed to call nmount: %s", reason)
-	}
-	return nil
-}
-
-func unmount(target string, flag int) error {
-	return syscall.Unmount(target, flag)
-}

vendor/src/github.com/docker/docker/pkg/mount/mounter_linux.go

@@ -1,21 +0,0 @@
-package mount
-
-import (
-	"syscall"
-)
-
-func mount(device, target, mType string, flag uintptr, data string) error {
-	if err := syscall.Mount(device, target, mType, flag, data); err != nil {
-		return err
-	}
-
-	// If we have a bind mount or remount, remount...
-	if flag&syscall.MS_BIND == syscall.MS_BIND && flag&syscall.MS_RDONLY == syscall.MS_RDONLY {
-		return syscall.Mount(device, target, mType, flag|syscall.MS_REMOUNT, data)
-	}
-	return nil
-}
-
-func unmount(target string, flag int) error {
-	return syscall.Unmount(target, flag)
-}

vendor/src/github.com/docker/docker/pkg/mount/mounter_unsupported.go

@@ -1,11 +0,0 @@
-// +build !linux,!freebsd freebsd,!cgo
-
-package mount
-
-func mount(device, target, mType string, flag uintptr, data string) error {
-	panic("Not implemented")
-}
-
-func unmount(target string, flag int) error {
-	panic("Not implemented")
-}

vendor/src/github.com/docker/docker/pkg/mount/mountinfo.go

@@ -1,40 +0,0 @@
-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
-
-	// 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
-}

vendor/src/github.com/docker/docker/pkg/mount/mountinfo_freebsd.go

@@ -1,41 +0,0 @@
-package mount
-
-/*
-#include <sys/param.h>
-#include <sys/ucred.h>
-#include <sys/mount.h>
-*/
-import "C"
-
-import (
-	"fmt"
-	"reflect"
-	"unsafe"
-)
-
-// Parse /proc/self/mountinfo because comparing Dev and ino does not work from
-// bind mounts.
-func parseMountTable() ([]*Info, error) {
-	var rawEntries *C.struct_statfs
-
-	count := int(C.getmntinfo(&rawEntries, C.MNT_WAIT))
-	if count == 0 {
-		return nil, fmt.Errorf("Failed to call getmntinfo")
-	}
-
-	var entries []C.struct_statfs
-	header := (*reflect.SliceHeader)(unsafe.Pointer(&entries))
-	header.Cap = count
-	header.Len = count
-	header.Data = uintptr(unsafe.Pointer(rawEntries))
-
-	var out []*Info
-	for _, entry := range entries {
-		var mountinfo Info
-		mountinfo.Mountpoint = C.GoString(&entry.f_mntonname[0])
-		mountinfo.Source = C.GoString(&entry.f_mntfromname[0])
-		mountinfo.Fstype = C.GoString(&entry.f_fstypename[0])
-		out = append(out, &mountinfo)
-	}
-	return out, nil
-}

vendor/src/github.com/docker/docker/pkg/mount/mountinfo_linux.go

@@ -1,95 +0,0 @@
-// +build linux
-
-package mount
-
-import (
-	"bufio"
-	"fmt"
-	"io"
-	"os"
-	"strings"
-)
-
-const (
-	/* 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*/
-	mountinfoFormat = "%d %d %d:%d %s %s %s %s"
-)
-
-// 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) {
-	var (
-		s   = bufio.NewScanner(r)
-		out = []*Info{}
-	)
-
-	for s.Scan() {
-		if err := s.Err(); err != nil {
-			return nil, err
-		}
-
-		var (
-			p              = &Info{}
-			text           = s.Text()
-			optionalFields string
-		)
-
-		if _, err := fmt.Sscanf(text, mountinfoFormat,
-			&p.ID, &p.Parent, &p.Major, &p.Minor,
-			&p.Root, &p.Mountpoint, &p.Opts, &optionalFields); err != nil {
-			return nil, fmt.Errorf("Scanning '%s' failed: %s", text, err)
-		}
-		// Safe as mountinfo encodes mountpoints with spaces as \040.
-		index := strings.Index(text, " - ")
-		postSeparatorFields := strings.Fields(text[index+3:])
-		if len(postSeparatorFields) < 3 {
-			return nil, fmt.Errorf("Error found less than 3 fields post '-' in %q", text)
-		}
-
-		if optionalFields != "-" {
-			p.Optional = optionalFields
-		}
-
-		p.Fstype = postSeparatorFields[0]
-		p.Source = postSeparatorFields[1]
-		p.VfsOpts = strings.Join(postSeparatorFields[2:], " ")
-		out = append(out, p)
-	}
-	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)
-}

vendor/src/github.com/docker/docker/pkg/mount/mountinfo_unsupported.go

@@ -1,12 +0,0 @@
-// +build !windows,!linux,!freebsd freebsd,!cgo
-
-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)
-}

vendor/src/github.com/docker/docker/pkg/mount/mountinfo_windows.go

@@ -1,6 +0,0 @@
-package mount
-
-func parseMountTable() ([]*Info, error) {
-	// Do NOT return an error!
-	return nil, nil
-}

vendor/src/github.com/docker/docker/pkg/mount/sharedsubtree_linux.go

@@ -1,69 +0,0 @@
-// +build linux
-
-package mount
-
-// MakeShared ensures a mounted filesystem has the SHARED mount option enabled.
-// See the supported options in flags.go for further reference.
-func MakeShared(mountPoint string) error {
-	return ensureMountedAs(mountPoint, "shared")
-}
-
-// MakeRShared ensures a mounted filesystem has the RSHARED mount option enabled.
-// See the supported options in flags.go for further reference.
-func MakeRShared(mountPoint string) error {
-	return ensureMountedAs(mountPoint, "rshared")
-}
-
-// MakePrivate ensures a mounted filesystem has the PRIVATE mount option enabled.
-// See the supported options in flags.go for further reference.
-func MakePrivate(mountPoint string) error {
-	return ensureMountedAs(mountPoint, "private")
-}
-
-// MakeRPrivate ensures a mounted filesystem has the RPRIVATE mount option
-// enabled. See the supported options in flags.go for further reference.
-func MakeRPrivate(mountPoint string) error {
-	return ensureMountedAs(mountPoint, "rprivate")
-}
-
-// MakeSlave ensures a mounted filesystem has the SLAVE mount option enabled.
-// See the supported options in flags.go for further reference.
-func MakeSlave(mountPoint string) error {
-	return ensureMountedAs(mountPoint, "slave")
-}
-
-// MakeRSlave ensures a mounted filesystem has the RSLAVE mount option enabled.
-// See the supported options in flags.go for further reference.
-func MakeRSlave(mountPoint string) error {
-	return ensureMountedAs(mountPoint, "rslave")
-}
-
-// MakeUnbindable ensures a mounted filesystem has the UNBINDABLE mount option
-// enabled. See the supported options in flags.go for further reference.
-func MakeUnbindable(mountPoint string) error {
-	return ensureMountedAs(mountPoint, "unbindable")
-}
-
-// MakeRUnbindable ensures a mounted filesystem has the RUNBINDABLE mount
-// option enabled. See the supported options in flags.go for further reference.
-func MakeRUnbindable(mountPoint string) error {
-	return ensureMountedAs(mountPoint, "runbindable")
-}
-
-func ensureMountedAs(mountPoint, options string) error {
-	mounted, err := Mounted(mountPoint)
-	if err != nil {
-		return err
-	}
-
-	if !mounted {
-		if err := Mount(mountPoint, mountPoint, "none", "bind,rw"); err != nil {
-			return err
-		}
-	}
-	if _, err = Mounted(mountPoint); err != nil {
-		return err
-	}
-
-	return ForceMount("", mountPoint, "none", options)
-}

vendor/src/github.com/docker/docker/pkg/symlink/README.md

@@ -1,6 +0,0 @@
-Package symlink implements EvalSymlinksInScope which is an extension of filepath.EvalSymlinks,
-as well as a Windows long-path aware version of filepath.EvalSymlinks
-from the [Go standard library](https://golang.org/pkg/path/filepath).
-
-The code from filepath.EvalSymlinks has been adapted in fs.go.
-Please read the LICENSE.BSD file that governs fs.go and LICENSE.APACHE for fs_test.go.

vendor/src/github.com/docker/docker/pkg/symlink/fs.go

@@ -1,143 +0,0 @@
-// Copyright 2012 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE.BSD file.
-
-// This code is a modified version of path/filepath/symlink.go from the Go standard library.
-
-package symlink
-
-import (
-	"bytes"
-	"errors"
-	"os"
-	"path/filepath"
-	"strings"
-
-	"github.com/docker/docker/pkg/system"
-)
-
-// FollowSymlinkInScope is a wrapper around evalSymlinksInScope that returns an
-// absolute path. This function handles paths in a platform-agnostic manner.
-func FollowSymlinkInScope(path, root string) (string, error) {
-	path, err := filepath.Abs(filepath.FromSlash(path))
-	if err != nil {
-		return "", err
-	}
-	root, err = filepath.Abs(filepath.FromSlash(root))
-	if err != nil {
-		return "", err
-	}
-	return evalSymlinksInScope(path, root)
-}
-
-// evalSymlinksInScope will evaluate symlinks in `path` within a scope `root` and return
-// a result guaranteed to be contained within the scope `root`, at the time of the call.
-// Symlinks in `root` are not evaluated and left as-is.
-// Errors encountered while attempting to evaluate symlinks in path will be returned.
-// Non-existing paths are valid and do not constitute an error.
-// `path` has to contain `root` as a prefix, or else an error will be returned.
-// Trying to break out from `root` does not constitute an error.
-//
-// Example:
-//   If /foo/bar -> /outside,
-//   FollowSymlinkInScope("/foo/bar", "/foo") == "/foo/outside" instead of "/oustide"
-//
-// IMPORTANT: it is the caller's responsibility to call evalSymlinksInScope *after* relevant symlinks
-// are created and not to create subsequently, additional symlinks that could potentially make a
-// previously-safe path, unsafe. Example: if /foo/bar does not exist, evalSymlinksInScope("/foo/bar", "/foo")
-// would return "/foo/bar". If one makes /foo/bar a symlink to /baz subsequently, then "/foo/bar" should
-// no longer be considered safely contained in "/foo".
-func evalSymlinksInScope(path, root string) (string, error) {
-	root = filepath.Clean(root)
-	if path == root {
-		return path, nil
-	}
-	if !strings.HasPrefix(path, root) {
-		return "", errors.New("evalSymlinksInScope: " + path + " is not in " + root)
-	}
-	const maxIter = 255
-	originalPath := path
-	// given root of "/a" and path of "/a/b/../../c" we want path to be "/b/../../c"
-	path = path[len(root):]
-	if root == string(filepath.Separator) {
-		path = string(filepath.Separator) + path
-	}
-	if !strings.HasPrefix(path, string(filepath.Separator)) {
-		return "", errors.New("evalSymlinksInScope: " + path + " is not in " + root)
-	}
-	path = filepath.Clean(path)
-	// consume path by taking each frontmost path element,
-	// expanding it if it's a symlink, and appending it to b
-	var b bytes.Buffer
-	// b here will always be considered to be the "current absolute path inside
-	// root" when we append paths to it, we also append a slash and use
-	// filepath.Clean after the loop to trim the trailing slash
-	for n := 0; path != ""; n++ {
-		if n > maxIter {
-			return "", errors.New("evalSymlinksInScope: too many links in " + originalPath)
-		}
-
-		// find next path component, p
-		i := strings.IndexRune(path, filepath.Separator)
-		var p string
-		if i == -1 {
-			p, path = path, ""
-		} else {
-			p, path = path[:i], path[i+1:]
-		}
-
-		if p == "" {
-			continue
-		}
-
-		// this takes a b.String() like "b/../" and a p like "c" and turns it
-		// into "/b/../c" which then gets filepath.Cleaned into "/c" and then
-		// root gets prepended and we Clean again (to remove any trailing slash
-		// if the first Clean gave us just "/")
-		cleanP := filepath.Clean(string(filepath.Separator) + b.String() + p)
-		if cleanP == string(filepath.Separator) {
-			// never Lstat "/" itself
-			b.Reset()
-			continue
-		}
-		fullP := filepath.Clean(root + cleanP)
-
-		fi, err := os.Lstat(fullP)
-		if os.IsNotExist(err) {
-			// if p does not exist, accept it
-			b.WriteString(p)
-			b.WriteRune(filepath.Separator)
-			continue
-		}
-		if err != nil {
-			return "", err
-		}
-		if fi.Mode()&os.ModeSymlink == 0 {
-			b.WriteString(p + string(filepath.Separator))
-			continue
-		}
-
-		// it's a symlink, put it at the front of path
-		dest, err := os.Readlink(fullP)
-		if err != nil {
-			return "", err
-		}
-		if system.IsAbs(dest) {
-			b.Reset()
-		}
-		path = dest + string(filepath.Separator) + path
-	}
-
-	// see note above on "fullP := ..." for why this is double-cleaned and
-	// what's happening here
-	return filepath.Clean(root + filepath.Clean(string(filepath.Separator)+b.String())), nil
-}
-
-// EvalSymlinks returns the path name after the evaluation of any symbolic
-// links.
-// If path is relative the result will be relative to the current directory,
-// unless one of the components is an absolute symbolic link.
-// This version has been updated to support long paths prepended with `\\?\`.
-func EvalSymlinks(path string) (string, error) {
-	return evalSymlinks(path)
-}

vendor/src/github.com/docker/docker/pkg/symlink/fs_unix.go

@@ -1,11 +0,0 @@
-// +build !windows
-
-package symlink
-
-import (
-	"path/filepath"
-)
-
-func evalSymlinks(path string) (string, error) {
-	return filepath.EvalSymlinks(path)
-}

vendor/src/github.com/docker/docker/pkg/symlink/fs_windows.go

@@ -1,155 +0,0 @@
-package symlink
-
-import (
-	"bytes"
-	"errors"
-	"os"
-	"path/filepath"
-	"strings"
-	"syscall"
-
-	"github.com/docker/docker/pkg/longpath"
-)
-
-func toShort(path string) (string, error) {
-	p, err := syscall.UTF16FromString(path)
-	if err != nil {
-		return "", err
-	}
-	b := p // GetShortPathName says we can reuse buffer
-	n, err := syscall.GetShortPathName(&p[0], &b[0], uint32(len(b)))
-	if err != nil {
-		return "", err
-	}
-	if n > uint32(len(b)) {
-		b = make([]uint16, n)
-		if _, err = syscall.GetShortPathName(&p[0], &b[0], uint32(len(b))); err != nil {
-			return "", err
-		}
-	}
-	return syscall.UTF16ToString(b), nil
-}
-
-func toLong(path string) (string, error) {
-	p, err := syscall.UTF16FromString(path)
-	if err != nil {
-		return "", err
-	}
-	b := p // GetLongPathName says we can reuse buffer
-	n, err := syscall.GetLongPathName(&p[0], &b[0], uint32(len(b)))
-	if err != nil {
-		return "", err
-	}
-	if n > uint32(len(b)) {
-		b = make([]uint16, n)
-		n, err = syscall.GetLongPathName(&p[0], &b[0], uint32(len(b)))
-		if err != nil {
-			return "", err
-		}
-	}
-	b = b[:n]
-	return syscall.UTF16ToString(b), nil
-}
-
-func evalSymlinks(path string) (string, error) {
-	path, err := walkSymlinks(path)
-	if err != nil {
-		return "", err
-	}
-
-	p, err := toShort(path)
-	if err != nil {
-		return "", err
-	}
-	p, err = toLong(p)
-	if err != nil {
-		return "", err
-	}
-	// syscall.GetLongPathName does not change the case of the drive letter,
-	// but the result of EvalSymlinks must be unique, so we have
-	// EvalSymlinks(`c:\a`) == EvalSymlinks(`C:\a`).
-	// Make drive letter upper case.
-	if len(p) >= 2 && p[1] == ':' && 'a' <= p[0] && p[0] <= 'z' {
-		p = string(p[0]+'A'-'a') + p[1:]
-	} else if len(p) >= 6 && p[5] == ':' && 'a' <= p[4] && p[4] <= 'z' {
-		p = p[:3] + string(p[4]+'A'-'a') + p[5:]
-	}
-	return filepath.Clean(p), nil
-}
-
-const utf8RuneSelf = 0x80
-
-func walkSymlinks(path string) (string, error) {
-	const maxIter = 255
-	originalPath := path
-	// consume path by taking each frontmost path element,
-	// expanding it if it's a symlink, and appending it to b
-	var b bytes.Buffer
-	for n := 0; path != ""; n++ {
-		if n > maxIter {
-			return "", errors.New("EvalSymlinks: too many links in " + originalPath)
-		}
-
-		// A path beginning with `\\?\` represents the root, so automatically
-		// skip that part and begin processing the next segment.
-		if strings.HasPrefix(path, longpath.Prefix) {
-			b.WriteString(longpath.Prefix)
-			path = path[4:]
-			continue
-		}
-
-		// find next path component, p
-		var i = -1
-		for j, c := range path {
-			if c < utf8RuneSelf && os.IsPathSeparator(uint8(c)) {
-				i = j
-				break
-			}
-		}
-		var p string
-		if i == -1 {
-			p, path = path, ""
-		} else {
-			p, path = path[:i], path[i+1:]
-		}
-
-		if p == "" {
-			if b.Len() == 0 {
-				// must be absolute path
-				b.WriteRune(filepath.Separator)
-			}
-			continue
-		}
-
-		// If this is the first segment after the long path prefix, accept the
-		// current segment as a volume root or UNC share and move on to the next.
-		if b.String() == longpath.Prefix {
-			b.WriteString(p)
-			b.WriteRune(filepath.Separator)
-			continue
-		}
-
-		fi, err := os.Lstat(b.String() + p)
-		if err != nil {
-			return "", err
-		}
-		if fi.Mode()&os.ModeSymlink == 0 {
-			b.WriteString(p)
-			if path != "" || (b.Len() == 2 && len(p) == 2 && p[1] == ':') {
-				b.WriteRune(filepath.Separator)
-			}
-			continue
-		}
-
-		// it's a symlink, put it at the front of path
-		dest, err := os.Readlink(b.String() + p)
-		if err != nil {
-			return "", err
-		}
-		if filepath.IsAbs(dest) || os.IsPathSeparator(dest[0]) {
-			b.Reset()
-		}
-		path = dest + string(filepath.Separator) + path
-	}
-	return filepath.Clean(b.String()), nil
-}

vendor/src/github.com/docker/go-units/CONTRIBUTING.md

@@ -1,67 +0,0 @@
-# Contributing to go-units
-
-Want to hack on go-units? Awesome! Here are instructions to get you started.
-
-go-units is a part of the [Docker](https://www.docker.com) project, and follows
-the same rules and principles. If you're already familiar with the way
-Docker does things, you'll feel right at home.
-
-Otherwise, go read Docker's
-[contributions guidelines](https://github.com/docker/docker/blob/master/CONTRIBUTING.md),
-[issue triaging](https://github.com/docker/docker/blob/master/project/ISSUE-TRIAGE.md),
-[review process](https://github.com/docker/docker/blob/master/project/REVIEWING.md) and
-[branches and tags](https://github.com/docker/docker/blob/master/project/BRANCHES-AND-TAGS.md).
-
-### Sign your work
-
-The sign-off is a simple line at the end of the explanation for the patch. Your
-signature certifies that you wrote the patch or otherwise have the right to pass
-it on as an open-source patch. The rules are pretty simple: if you can certify
-the below (from [developercertificate.org](http://developercertificate.org/)):
-
-```
-Developer Certificate of Origin
-Version 1.1
-
-Copyright (C) 2004, 2006 The Linux Foundation and its contributors.
-660 York Street, Suite 102,
-San Francisco, CA 94110 USA
-
-Everyone is permitted to copy and distribute verbatim copies of this
-license document, but changing it is not allowed.
-
-Developer's Certificate of Origin 1.1
-
-By making a contribution to this project, I certify that:
-
-(a) The contribution was created in whole or in part by me and I
-    have the right to submit it under the open source license
-    indicated in the file; or
-
-(b) The contribution is based upon previous work that, to the best
-    of my knowledge, is covered under an appropriate open source
-    license and I have the right under that license to submit that
-    work with modifications, whether created in whole or in part
-    by me, under the same open source license (unless I am
-    permitted to submit under a different license), as indicated
-    in the file; or
-
-(c) The contribution was provided directly to me by some other
-    person who certified (a), (b) or (c) and I have not modified
-    it.
-
-(d) I understand and agree that this project and the contribution
-    are public and that a record of the contribution (including all
-    personal information I submit with it, including my sign-off) is
-    maintained indefinitely and may be redistributed consistent with
-    this project or the open source license(s) involved.
-```
-
-Then you just add a line to every git commit message:
-
-    Signed-off-by: Joe Smith <joe.smith@email.com>
-
-Use your real name (sorry, no pseudonyms or anonymous contributions.)
-
-If you set your `user.name` and `user.email` git configs, you can sign your
-commit automatically with `git commit -s`.

vendor/src/github.com/docker/go-units/MAINTAINERS

@@ -1,27 +0,0 @@
-# go-connections maintainers file
-#
-# This file describes who runs the docker/go-connections project and how.
-# This is a living document - if you see something out of date or missing, speak up!
-#
-# It is structured to be consumable by both humans and programs.
-# To extract its contents programmatically, use any TOML-compliant parser.
-#
-# This file is compiled into the MAINTAINERS file in docker/opensource.
-#
-[Org]
-	[Org."Core maintainers"]
-		people = [
-			"calavera",
-		]
-
-[people]
-
-# A reference list of all people associated with the project.
-# All other sections should refer to people by their canonical key
-# in the people section.
-
-	# ADD YOURSELF HERE IN ALPHABETICAL ORDER
-	[people.calavera]
-	Name = "David Calavera"
-	Email = "david.calavera@gmail.com"
-	GitHub = "calavera"

vendor/src/github.com/docker/go-units/README.md

@@ -1,18 +0,0 @@
-[![GoDoc](https://godoc.org/github.com/docker/go-units?status.svg)](https://godoc.org/github.com/docker/go-units)
-
-# Introduction
-
-go-units is a library to transform human friendly measurements into machine friendly values.
-
-## Usage
-
-See the [docs in godoc](https://godoc.org/github.com/docker/go-units) for examples and documentation.
-
-## Copyright and license
-
-Copyright © 2015 Docker, Inc. All rights reserved, except as follows. Code
-is released under the Apache 2.0 license. The README.md file, and files in the
-"docs" folder are licensed under the Creative Commons Attribution 4.0
-International License under the terms and conditions set forth in the file
-"LICENSE.docs". You may obtain a duplicate copy of the same license, titled
-CC-BY-SA-4.0, at http://creativecommons.org/licenses/by/4.0/.

vendor/src/github.com/docker/go-units/circle.yml

@@ -1,11 +0,0 @@
-dependencies:
-  post:
-    # install golint
-    - go get github.com/golang/lint/golint
-
-test:
-  pre:
-    # run analysis before tests
-    - go vet ./...
-    - test -z "$(golint ./... | tee /dev/stderr)"
-    - test -z "$(gofmt -s -l . | tee /dev/stderr)"

vendor/src/github.com/docker/go-units/duration.go

@@ -1,33 +0,0 @@
-// Package units provides helper function to parse and print size and time units
-// in human-readable format.
-package units
-
-import (
-	"fmt"
-	"time"
-)
-
-// HumanDuration returns a human-readable approximation of a duration
-// (eg. "About a minute", "4 hours ago", etc.).
-func HumanDuration(d time.Duration) string {
-	if seconds := int(d.Seconds()); seconds < 1 {
-		return "Less than a second"
-	} else if seconds < 60 {
-		return fmt.Sprintf("%d seconds", seconds)
-	} else if minutes := int(d.Minutes()); minutes == 1 {
-		return "About a minute"
-	} else if minutes < 60 {
-		return fmt.Sprintf("%d minutes", minutes)
-	} else if hours := int(d.Hours()); hours == 1 {
-		return "About an hour"
-	} else if hours < 48 {
-		return fmt.Sprintf("%d hours", hours)
-	} else if hours < 24*7*2 {
-		return fmt.Sprintf("%d days", hours/24)
-	} else if hours < 24*30*3 {
-		return fmt.Sprintf("%d weeks", hours/24/7)
-	} else if hours < 24*365*2 {
-		return fmt.Sprintf("%d months", hours/24/30)
-	}
-	return fmt.Sprintf("%d years", int(d.Hours())/24/365)
-}

vendor/src/github.com/docker/go-units/size.go

@@ -1,95 +0,0 @@
-package units
-
-import (
-	"fmt"
-	"regexp"
-	"strconv"
-	"strings"
-)
-
-// See: http://en.wikipedia.org/wiki/Binary_prefix
-const (
-	// Decimal
-
-	KB = 1000
-	MB = 1000 * KB
-	GB = 1000 * MB
-	TB = 1000 * GB
-	PB = 1000 * TB
-
-	// Binary
-
-	KiB = 1024
-	MiB = 1024 * KiB
-	GiB = 1024 * MiB
-	TiB = 1024 * GiB
-	PiB = 1024 * TiB
-)
-
-type unitMap map[string]int64
-
-var (
-	decimalMap = unitMap{"k": KB, "m": MB, "g": GB, "t": TB, "p": PB}
-	binaryMap  = unitMap{"k": KiB, "m": MiB, "g": GiB, "t": TiB, "p": PiB}
-	sizeRegex  = regexp.MustCompile(`^(\d+(\.\d+)*) ?([kKmMgGtTpP])?[bB]?$`)
-)
-
-var decimapAbbrs = []string{"B", "kB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB"}
-var binaryAbbrs = []string{"B", "KiB", "MiB", "GiB", "TiB", "PiB", "EiB", "ZiB", "YiB"}
-
-// CustomSize returns a human-readable approximation of a size
-// using custom format.
-func CustomSize(format string, size float64, base float64, _map []string) string {
-	i := 0
-	for size >= base {
-		size = size / base
-		i++
-	}
-	return fmt.Sprintf(format, size, _map[i])
-}
-
-// HumanSize returns a human-readable approximation of a size
-// capped at 4 valid numbers (eg. "2.746 MB", "796 KB").
-func HumanSize(size float64) string {
-	return CustomSize("%.4g %s", size, 1000.0, decimapAbbrs)
-}
-
-// BytesSize returns a human-readable size in bytes, kibibytes,
-// mebibytes, gibibytes, or tebibytes (eg. "44kiB", "17MiB").
-func BytesSize(size float64) string {
-	return CustomSize("%.4g %s", size, 1024.0, binaryAbbrs)
-}
-
-// FromHumanSize returns an integer from a human-readable specification of a
-// size using SI standard (eg. "44kB", "17MB").
-func FromHumanSize(size string) (int64, error) {
-	return parseSize(size, decimalMap)
-}
-
-// RAMInBytes parses a human-readable string representing an amount of RAM
-// in bytes, kibibytes, mebibytes, gibibytes, or tebibytes and
-// returns the number of bytes, or -1 if the string is unparseable.
-// Units are case-insensitive, and the 'b' suffix is optional.
-func RAMInBytes(size string) (int64, error) {
-	return parseSize(size, binaryMap)
-}
-
-// Parses the human-readable size string into the amount it represents.
-func parseSize(sizeStr string, uMap unitMap) (int64, error) {
-	matches := sizeRegex.FindStringSubmatch(sizeStr)
-	if len(matches) != 4 {
-		return -1, fmt.Errorf("invalid size: '%s'", sizeStr)
-	}
-
-	size, err := strconv.ParseFloat(matches[1], 64)
-	if err != nil {
-		return -1, err
-	}
-
-	unitPrefix := strings.ToLower(matches[3])
-	if mul, ok := uMap[unitPrefix]; ok {
-		size *= float64(mul)
-	}
-
-	return int64(size), nil
-}

vendor/src/github.com/docker/go-units/ulimit.go

@@ -1,118 +0,0 @@
-package units
-
-import (
-	"fmt"
-	"strconv"
-	"strings"
-)
-
-// Ulimit is a human friendly version of Rlimit.
-type Ulimit struct {
-	Name string
-	Hard int64
-	Soft int64
-}
-
-// Rlimit specifies the resource limits, such as max open files.
-type Rlimit struct {
-	Type int    `json:"type,omitempty"`
-	Hard uint64 `json:"hard,omitempty"`
-	Soft uint64 `json:"soft,omitempty"`
-}
-
-const (
-	// magic numbers for making the syscall
-	// some of these are defined in the syscall package, but not all.
-	// Also since Windows client doesn't get access to the syscall package, need to
-	//	define these here
-	rlimitAs         = 9
-	rlimitCore       = 4
-	rlimitCPU        = 0
-	rlimitData       = 2
-	rlimitFsize      = 1
-	rlimitLocks      = 10
-	rlimitMemlock    = 8
-	rlimitMsgqueue   = 12
-	rlimitNice       = 13
-	rlimitNofile     = 7
-	rlimitNproc      = 6
-	rlimitRss        = 5
-	rlimitRtprio     = 14
-	rlimitRttime     = 15
-	rlimitSigpending = 11
-	rlimitStack      = 3
-)
-
-var ulimitNameMapping = map[string]int{
-	//"as":         rlimitAs, // Disabled since this doesn't seem usable with the way Docker inits a container.
-	"core":       rlimitCore,
-	"cpu":        rlimitCPU,
-	"data":       rlimitData,
-	"fsize":      rlimitFsize,
-	"locks":      rlimitLocks,
-	"memlock":    rlimitMemlock,
-	"msgqueue":   rlimitMsgqueue,
-	"nice":       rlimitNice,
-	"nofile":     rlimitNofile,
-	"nproc":      rlimitNproc,
-	"rss":        rlimitRss,
-	"rtprio":     rlimitRtprio,
-	"rttime":     rlimitRttime,
-	"sigpending": rlimitSigpending,
-	"stack":      rlimitStack,
-}
-
-// ParseUlimit parses and returns a Ulimit from the specified string.
-func ParseUlimit(val string) (*Ulimit, error) {
-	parts := strings.SplitN(val, "=", 2)
-	if len(parts) != 2 {
-		return nil, fmt.Errorf("invalid ulimit argument: %s", val)
-	}
-
-	if _, exists := ulimitNameMapping[parts[0]]; !exists {
-		return nil, fmt.Errorf("invalid ulimit type: %s", parts[0])
-	}
-
-	var (
-		soft int64
-		hard = &soft // default to soft in case no hard was set
-		temp int64
-		err  error
-	)
-	switch limitVals := strings.Split(parts[1], ":"); len(limitVals) {
-	case 2:
-		temp, err = strconv.ParseInt(limitVals[1], 10, 64)
-		if err != nil {
-			return nil, err
-		}
-		hard = &temp
-		fallthrough
-	case 1:
-		soft, err = strconv.ParseInt(limitVals[0], 10, 64)
-		if err != nil {
-			return nil, err
-		}
-	default:
-		return nil, fmt.Errorf("too many limit value arguments - %s, can only have up to two, `soft[:hard]`", parts[1])
-	}
-
-	if soft > *hard {
-		return nil, fmt.Errorf("ulimit soft limit must be less than or equal to hard limit: %d > %d", soft, *hard)
-	}
-
-	return &Ulimit{Name: parts[0], Soft: soft, Hard: *hard}, nil
-}
-
-// GetRlimit returns the RLimit corresponding to Ulimit.
-func (u *Ulimit) GetRlimit() (*Rlimit, error) {
-	t, exists := ulimitNameMapping[u.Name]
-	if !exists {
-		return nil, fmt.Errorf("invalid ulimit name %s", u.Name)
-	}
-
-	return &Rlimit{Type: t, Soft: uint64(u.Soft), Hard: uint64(u.Hard)}, nil
-}
-
-func (u *Ulimit) String() string {
-	return fmt.Sprintf("%s=%d:%d", u.Name, u.Soft, u.Hard)
-}

vendor/src/github.com/godbus/dbus/CONTRIBUTING.md

@@ -1,50 +0,0 @@
-# How to Contribute
-
-## Getting Started
-
-- Fork the repository on GitHub
-- Read the [README](README.markdown) for build and test instructions
-- Play with the project, submit bugs, submit patches!
-
-## Contribution Flow
-
-This is a rough outline of what a contributor's workflow looks like:
-
-- Create a topic branch from where you want to base your work (usually master).
-- Make commits of logical units.
-- Make sure your commit messages are in the proper format (see below).
-- Push your changes to a topic branch in your fork of the repository.
-- Make sure the tests pass, and add any new tests as appropriate.
-- Submit a pull request to the original repository.
-
-Thanks for your contributions!
-
-### Format of the Commit Message
-
-We follow a rough convention for commit messages that is designed to answer two
-questions: what changed and why. The subject line should feature the what and
-the body of the commit should describe the why.
-
-```
-scripts: add the test-cluster command
-
-this uses tmux to setup a test cluster that you can easily kill and
-start for debugging.
-
-Fixes #38
-```
-
-The format can be described more formally as follows:
-
-```
-<subsystem>: <what changed>
-<BLANK LINE>
-<why this change was made>
-<BLANK LINE>
-<footer>
-```
-
-The first line is the subject and should be no longer than 70 characters, the
-second line is always blank, and other lines should be wrapped at 80 characters.
-This allows the message to be easier to read on GitHub as well as in various
-git tools.

vendor/src/github.com/godbus/dbus/MAINTAINERS

@@ -1,2 +0,0 @@
-Brandon Philips <brandon@ifup.org> (@philips)
-Brian Waldon <brian@waldon.cc> (@bcwaldon)

vendor/src/github.com/godbus/dbus/README.markdown

@@ -1,41 +0,0 @@
-dbus
-----
-
-dbus is a simple library that implements native Go client bindings for the
-D-Bus message bus system.
-
-### Features
-
-* Complete native implementation of the D-Bus message protocol
-* Go-like API (channels for signals / asynchronous method calls, Goroutine-safe connections)
-* Subpackages that help with the introspection / property interfaces
-
-### Installation
-
-This packages requires Go 1.1. If you installed it and set up your GOPATH, just run:
-
-```
-go get github.com/godbus/dbus
-```
-
-If you want to use the subpackages, you can install them the same way.
-
-### Usage
-
-The complete package documentation and some simple examples are available at
-[godoc.org](http://godoc.org/github.com/godbus/dbus). Also, the
-[_examples](https://github.com/godbus/dbus/tree/master/_examples) directory
-gives a short overview over the basic usage. 
-
-#### Projects using godbus
-- [notify](https://github.com/esiqveland/notify) provides desktop notifications over dbus into a library.
-
-Please note that the API is considered unstable for now and may change without
-further notice.
-
-### License
-
-go.dbus is available under the Simplified BSD License; see LICENSE for the full
-text.
-
-Nearly all of the credit for this library goes to github.com/guelfey/go.dbus.

vendor/src/github.com/godbus/dbus/auth.go

@@ -1,253 +0,0 @@
-package dbus
-
-import (
-	"bufio"
-	"bytes"
-	"errors"
-	"io"
-	"os"
-	"strconv"
-)
-
-// AuthStatus represents the Status of an authentication mechanism.
-type AuthStatus byte
-
-const (
-	// AuthOk signals that authentication is finished; the next command
-	// from the server should be an OK.
-	AuthOk AuthStatus = iota
-
-	// AuthContinue signals that additional data is needed; the next command
-	// from the server should be a DATA.
-	AuthContinue
-
-	// AuthError signals an error; the server sent invalid data or some
-	// other unexpected thing happened and the current authentication
-	// process should be aborted.
-	AuthError
-)
-
-type authState byte
-
-const (
-	waitingForData authState = iota
-	waitingForOk
-	waitingForReject
-)
-
-// Auth defines the behaviour of an authentication mechanism.
-type Auth interface {
-	// Return the name of the mechnism, the argument to the first AUTH command
-	// and the next status.
-	FirstData() (name, resp []byte, status AuthStatus)
-
-	// Process the given DATA command, and return the argument to the DATA
-	// command and the next status. If len(resp) == 0, no DATA command is sent.
-	HandleData(data []byte) (resp []byte, status AuthStatus)
-}
-
-// Auth authenticates the connection, trying the given list of authentication
-// mechanisms (in that order). If nil is passed, the EXTERNAL and
-// DBUS_COOKIE_SHA1 mechanisms are tried for the current user. For private
-// connections, this method must be called before sending any messages to the
-// bus. Auth must not be called on shared connections.
-func (conn *Conn) Auth(methods []Auth) error {
-	if methods == nil {
-		uid := strconv.Itoa(os.Getuid())
-		methods = []Auth{AuthExternal(uid), AuthCookieSha1(uid, getHomeDir())}
-	}
-	in := bufio.NewReader(conn.transport)
-	err := conn.transport.SendNullByte()
-	if err != nil {
-		return err
-	}
-	err = authWriteLine(conn.transport, []byte("AUTH"))
-	if err != nil {
-		return err
-	}
-	s, err := authReadLine(in)
-	if err != nil {
-		return err
-	}
-	if len(s) < 2 || !bytes.Equal(s[0], []byte("REJECTED")) {
-		return errors.New("dbus: authentication protocol error")
-	}
-	s = s[1:]
-	for _, v := range s {
-		for _, m := range methods {
-			if name, data, status := m.FirstData(); bytes.Equal(v, name) {
-				var ok bool
-				err = authWriteLine(conn.transport, []byte("AUTH"), []byte(v), data)
-				if err != nil {
-					return err
-				}
-				switch status {
-				case AuthOk:
-					err, ok = conn.tryAuth(m, waitingForOk, in)
-				case AuthContinue:
-					err, ok = conn.tryAuth(m, waitingForData, in)
-				default:
-					panic("dbus: invalid authentication status")
-				}
-				if err != nil {
-					return err
-				}
-				if ok {
-					if conn.transport.SupportsUnixFDs() {
-						err = authWriteLine(conn, []byte("NEGOTIATE_UNIX_FD"))
-						if err != nil {
-							return err
-						}
-						line, err := authReadLine(in)
-						if err != nil {
-							return err
-						}
-						switch {
-						case bytes.Equal(line[0], []byte("AGREE_UNIX_FD")):
-							conn.EnableUnixFDs()
-							conn.unixFD = true
-						case bytes.Equal(line[0], []byte("ERROR")):
-						default:
-							return errors.New("dbus: authentication protocol error")
-						}
-					}
-					err = authWriteLine(conn.transport, []byte("BEGIN"))
-					if err != nil {
-						return err
-					}
-					go conn.inWorker()
-					go conn.outWorker()
-					return nil
-				}
-			}
-		}
-	}
-	return errors.New("dbus: authentication failed")
-}
-
-// tryAuth tries to authenticate with m as the mechanism, using state as the
-// initial authState and in for reading input. It returns (nil, true) on
-// success, (nil, false) on a REJECTED and (someErr, false) if some other
-// error occured.
-func (conn *Conn) tryAuth(m Auth, state authState, in *bufio.Reader) (error, bool) {
-	for {
-		s, err := authReadLine(in)
-		if err != nil {
-			return err, false
-		}
-		switch {
-		case state == waitingForData && string(s[0]) == "DATA":
-			if len(s) != 2 {
-				err = authWriteLine(conn.transport, []byte("ERROR"))
-				if err != nil {
-					return err, false
-				}
-				continue
-			}
-			data, status := m.HandleData(s[1])
-			switch status {
-			case AuthOk, AuthContinue:
-				if len(data) != 0 {
-					err = authWriteLine(conn.transport, []byte("DATA"), data)
-					if err != nil {
-						return err, false
-					}
-				}
-				if status == AuthOk {
-					state = waitingForOk
-				}
-			case AuthError:
-				err = authWriteLine(conn.transport, []byte("ERROR"))
-				if err != nil {
-					return err, false
-				}
-			}
-		case state == waitingForData && string(s[0]) == "REJECTED":
-			return nil, false
-		case state == waitingForData && string(s[0]) == "ERROR":
-			err = authWriteLine(conn.transport, []byte("CANCEL"))
-			if err != nil {
-				return err, false
-			}
-			state = waitingForReject
-		case state == waitingForData && string(s[0]) == "OK":
-			if len(s) != 2 {
-				err = authWriteLine(conn.transport, []byte("CANCEL"))
-				if err != nil {
-					return err, false
-				}
-				state = waitingForReject
-			}
-			conn.uuid = string(s[1])
-			return nil, true
-		case state == waitingForData:
-			err = authWriteLine(conn.transport, []byte("ERROR"))
-			if err != nil {
-				return err, false
-			}
-		case state == waitingForOk && string(s[0]) == "OK":
-			if len(s) != 2 {
-				err = authWriteLine(conn.transport, []byte("CANCEL"))
-				if err != nil {
-					return err, false
-				}
-				state = waitingForReject
-			}
-			conn.uuid = string(s[1])
-			return nil, true
-		case state == waitingForOk && string(s[0]) == "REJECTED":
-			return nil, false
-		case state == waitingForOk && (string(s[0]) == "DATA" ||
-			string(s[0]) == "ERROR"):
-
-			err = authWriteLine(conn.transport, []byte("CANCEL"))
-			if err != nil {
-				return err, false
-			}
-			state = waitingForReject
-		case state == waitingForOk:
-			err = authWriteLine(conn.transport, []byte("ERROR"))
-			if err != nil {
-				return err, false
-			}
-		case state == waitingForReject && string(s[0]) == "REJECTED":
-			return nil, false
-		case state == waitingForReject:
-			return errors.New("dbus: authentication protocol error"), false
-		default:
-			panic("dbus: invalid auth state")
-		}
-	}
-}
-
-// authReadLine reads a line and separates it into its fields.
-func authReadLine(in *bufio.Reader) ([][]byte, error) {
-	data, err := in.ReadBytes('\n')
-	if err != nil {
-		return nil, err
-	}
-	data = bytes.TrimSuffix(data, []byte("\r\n"))
-	return bytes.Split(data, []byte{' '}), nil
-}
-
-// authWriteLine writes the given line in the authentication protocol format
-// (elements of data separated by a " " and terminated by "\r\n").
-func authWriteLine(out io.Writer, data ...[]byte) error {
-	buf := make([]byte, 0)
-	for i, v := range data {
-		buf = append(buf, v...)
-		if i != len(data)-1 {
-			buf = append(buf, ' ')
-		}
-	}
-	buf = append(buf, '\r')
-	buf = append(buf, '\n')
-	n, err := out.Write(buf)
-	if err != nil {
-		return err
-	}
-	if n != len(buf) {
-		return io.ErrUnexpectedEOF
-	}
-	return nil
-}

vendor/src/github.com/godbus/dbus/auth_external.go

@@ -1,26 +0,0 @@
-package dbus
-
-import (
-	"encoding/hex"
-)
-
-// AuthExternal returns an Auth that authenticates as the given user with the
-// EXTERNAL mechanism.
-func AuthExternal(user string) Auth {
-	return authExternal{user}
-}
-
-// AuthExternal implements the EXTERNAL authentication mechanism.
-type authExternal struct {
-	user string
-}
-
-func (a authExternal) FirstData() ([]byte, []byte, AuthStatus) {
-	b := make([]byte, 2*len(a.user))
-	hex.Encode(b, []byte(a.user))
-	return []byte("EXTERNAL"), b, AuthOk
-}
-
-func (a authExternal) HandleData(b []byte) ([]byte, AuthStatus) {
-	return nil, AuthError
-}

vendor/src/github.com/godbus/dbus/auth_sha1.go

@@ -1,102 +0,0 @@
-package dbus
-
-import (
-	"bufio"
-	"bytes"
-	"crypto/rand"
-	"crypto/sha1"
-	"encoding/hex"
-	"os"
-)
-
-// AuthCookieSha1 returns an Auth that authenticates as the given user with the
-// DBUS_COOKIE_SHA1 mechanism. The home parameter should specify the home
-// directory of the user.
-func AuthCookieSha1(user, home string) Auth {
-	return authCookieSha1{user, home}
-}
-
-type authCookieSha1 struct {
-	user, home string
-}
-
-func (a authCookieSha1) FirstData() ([]byte, []byte, AuthStatus) {
-	b := make([]byte, 2*len(a.user))
-	hex.Encode(b, []byte(a.user))
-	return []byte("DBUS_COOKIE_SHA1"), b, AuthContinue
-}
-
-func (a authCookieSha1) HandleData(data []byte) ([]byte, AuthStatus) {
-	challenge := make([]byte, len(data)/2)
-	_, err := hex.Decode(challenge, data)
-	if err != nil {
-		return nil, AuthError
-	}
-	b := bytes.Split(challenge, []byte{' '})
-	if len(b) != 3 {
-		return nil, AuthError
-	}
-	context := b[0]
-	id := b[1]
-	svchallenge := b[2]
-	cookie := a.getCookie(context, id)
-	if cookie == nil {
-		return nil, AuthError
-	}
-	clchallenge := a.generateChallenge()
-	if clchallenge == nil {
-		return nil, AuthError
-	}
-	hash := sha1.New()
-	hash.Write(bytes.Join([][]byte{svchallenge, clchallenge, cookie}, []byte{':'}))
-	hexhash := make([]byte, 2*hash.Size())
-	hex.Encode(hexhash, hash.Sum(nil))
-	data = append(clchallenge, ' ')
-	data = append(data, hexhash...)
-	resp := make([]byte, 2*len(data))
-	hex.Encode(resp, data)
-	return resp, AuthOk
-}
-
-// getCookie searches for the cookie identified by id in context and returns
-// the cookie content or nil. (Since HandleData can't return a specific error,
-// but only whether an error occured, this function also doesn't bother to
-// return an error.)
-func (a authCookieSha1) getCookie(context, id []byte) []byte {
-	file, err := os.Open(a.home + "/.dbus-keyrings/" + string(context))
-	if err != nil {
-		return nil
-	}
-	defer file.Close()
-	rd := bufio.NewReader(file)
-	for {
-		line, err := rd.ReadBytes('\n')
-		if err != nil {
-			return nil
-		}
-		line = line[:len(line)-1]
-		b := bytes.Split(line, []byte{' '})
-		if len(b) != 3 {
-			return nil
-		}
-		if bytes.Equal(b[0], id) {
-			return b[2]
-		}
-	}
-}
-
-// generateChallenge returns a random, hex-encoded challenge, or nil on error
-// (see above).
-func (a authCookieSha1) generateChallenge() []byte {
-	b := make([]byte, 16)
-	n, err := rand.Read(b)
-	if err != nil {
-		return nil
-	}
-	if n != 16 {
-		return nil
-	}
-	enc := make([]byte, 32)
-	hex.Encode(enc, b)
-	return enc
-}

vendor/src/github.com/godbus/dbus/call.go

@@ -1,36 +0,0 @@
-package dbus
-
-import (
-	"errors"
-)
-
-// Call represents a pending or completed method call.
-type Call struct {
-	Destination string
-	Path        ObjectPath
-	Method      string
-	Args        []interface{}
-
-	// Strobes when the call is complete.
-	Done chan *Call
-
-	// After completion, the error status. If this is non-nil, it may be an
-	// error message from the peer (with Error as its type) or some other error.
-	Err error
-
-	// Holds the response once the call is done.
-	Body []interface{}
-}
-
-var errSignature = errors.New("dbus: mismatched signature")
-
-// Store stores the body of the reply into the provided pointers. It returns
-// an error if the signatures of the body and retvalues don't match, or if
-// the error status is not nil.
-func (c *Call) Store(retvalues ...interface{}) error {
-	if c.Err != nil {
-		return c.Err
-	}
-
-	return Store(c.Body, retvalues...)
-}

vendor/src/github.com/godbus/dbus/conn.go

@@ -1,636 +0,0 @@
-package dbus
-
-import (
-	"errors"
-	"io"
-	"os"
-	"reflect"
-	"strings"
-	"sync"
-)
-
-const defaultSystemBusAddress = "unix:path=/var/run/dbus/system_bus_socket"
-
-var (
-	systemBus     *Conn
-	systemBusLck  sync.Mutex
-	sessionBus    *Conn
-	sessionBusLck sync.Mutex
-)
-
-// ErrClosed is the error returned by calls on a closed connection.
-var ErrClosed = errors.New("dbus: connection closed by user")
-
-// Conn represents a connection to a message bus (usually, the system or
-// session bus).
-//
-// Connections are either shared or private. Shared connections
-// are shared between calls to the functions that return them. As a result,
-// the methods Close, Auth and Hello must not be called on them.
-//
-// Multiple goroutines may invoke methods on a connection simultaneously.
-type Conn struct {
-	transport
-
-	busObj BusObject
-	unixFD bool
-	uuid   string
-
-	names    []string
-	namesLck sync.RWMutex
-
-	serialLck  sync.Mutex
-	nextSerial uint32
-	serialUsed map[uint32]bool
-
-	calls    map[uint32]*Call
-	callsLck sync.RWMutex
-
-	handlers    map[ObjectPath]map[string]exportedObj
-	handlersLck sync.RWMutex
-
-	out    chan *Message
-	closed bool
-	outLck sync.RWMutex
-
-	signals    []chan<- *Signal
-	signalsLck sync.Mutex
-
-	eavesdropped    chan<- *Message
-	eavesdroppedLck sync.Mutex
-}
-
-// SessionBus returns a shared connection to the session bus, connecting to it
-// if not already done.
-func SessionBus() (conn *Conn, err error) {
-	sessionBusLck.Lock()
-	defer sessionBusLck.Unlock()
-	if sessionBus != nil {
-		return sessionBus, nil
-	}
-	defer func() {
-		if conn != nil {
-			sessionBus = conn
-		}
-	}()
-	conn, err = SessionBusPrivate()
-	if err != nil {
-		return
-	}
-	if err = conn.Auth(nil); err != nil {
-		conn.Close()
-		conn = nil
-		return
-	}
-	if err = conn.Hello(); err != nil {
-		conn.Close()
-		conn = nil
-	}
-	return
-}
-
-// SessionBusPrivate returns a new private connection to the session bus.
-func SessionBusPrivate() (*Conn, error) {
-	address := os.Getenv("DBUS_SESSION_BUS_ADDRESS")
-	if address != "" && address != "autolaunch:" {
-		return Dial(address)
-	}
-
-	return sessionBusPlatform()
-}
-
-// SystemBus returns a shared connection to the system bus, connecting to it if
-// not already done.
-func SystemBus() (conn *Conn, err error) {
-	systemBusLck.Lock()
-	defer systemBusLck.Unlock()
-	if systemBus != nil {
-		return systemBus, nil
-	}
-	defer func() {
-		if conn != nil {
-			systemBus = conn
-		}
-	}()
-	conn, err = SystemBusPrivate()
-	if err != nil {
-		return
-	}
-	if err = conn.Auth(nil); err != nil {
-		conn.Close()
-		conn = nil
-		return
-	}
-	if err = conn.Hello(); err != nil {
-		conn.Close()
-		conn = nil
-	}
-	return
-}
-
-// SystemBusPrivate returns a new private connection to the system bus.
-func SystemBusPrivate() (*Conn, error) {
-	address := os.Getenv("DBUS_SYSTEM_BUS_ADDRESS")
-	if address != "" {
-		return Dial(address)
-	}
-	return Dial(defaultSystemBusAddress)
-}
-
-// Dial establishes a new private connection to the message bus specified by address.
-func Dial(address string) (*Conn, error) {
-	tr, err := getTransport(address)
-	if err != nil {
-		return nil, err
-	}
-	return newConn(tr)
-}
-
-// NewConn creates a new private *Conn from an already established connection.
-func NewConn(conn io.ReadWriteCloser) (*Conn, error) {
-	return newConn(genericTransport{conn})
-}
-
-// newConn creates a new *Conn from a transport.
-func newConn(tr transport) (*Conn, error) {
-	conn := new(Conn)
-	conn.transport = tr
-	conn.calls = make(map[uint32]*Call)
-	conn.out = make(chan *Message, 10)
-	conn.handlers = make(map[ObjectPath]map[string]exportedObj)
-	conn.nextSerial = 1
-	conn.serialUsed = map[uint32]bool{0: true}
-	conn.busObj = conn.Object("org.freedesktop.DBus", "/org/freedesktop/DBus")
-	return conn, nil
-}
-
-// BusObject returns the object owned by the bus daemon which handles
-// administrative requests.
-func (conn *Conn) BusObject() BusObject {
-	return conn.busObj
-}
-
-// Close closes the connection. Any blocked operations will return with errors
-// and the channels passed to Eavesdrop and Signal are closed. This method must
-// not be called on shared connections.
-func (conn *Conn) Close() error {
-	conn.outLck.Lock()
-	if conn.closed {
-		// inWorker calls Close on read error, the read error may
-		// be caused by another caller calling Close to shutdown the
-		// dbus connection, a double-close scenario we prevent here.
-		conn.outLck.Unlock()
-		return nil
-	}
-	close(conn.out)
-	conn.closed = true
-	conn.outLck.Unlock()
-	conn.signalsLck.Lock()
-	for _, ch := range conn.signals {
-		close(ch)
-	}
-	conn.signalsLck.Unlock()
-	conn.eavesdroppedLck.Lock()
-	if conn.eavesdropped != nil {
-		close(conn.eavesdropped)
-	}
-	conn.eavesdroppedLck.Unlock()
-	return conn.transport.Close()
-}
-
-// Eavesdrop causes conn to send all incoming messages to the given channel
-// without further processing. Method replies, errors and signals will not be
-// sent to the appropiate channels and method calls will not be handled. If nil
-// is passed, the normal behaviour is restored.
-//
-// The caller has to make sure that ch is sufficiently buffered;
-// if a message arrives when a write to ch is not possible, the message is
-// discarded.
-func (conn *Conn) Eavesdrop(ch chan<- *Message) {
-	conn.eavesdroppedLck.Lock()
-	conn.eavesdropped = ch
-	conn.eavesdroppedLck.Unlock()
-}
-
-// getSerial returns an unused serial.
-func (conn *Conn) getSerial() uint32 {
-	conn.serialLck.Lock()
-	defer conn.serialLck.Unlock()
-	n := conn.nextSerial
-	for conn.serialUsed[n] {
-		n++
-	}
-	conn.serialUsed[n] = true
-	conn.nextSerial = n + 1
-	return n
-}
-
-// Hello sends the initial org.freedesktop.DBus.Hello call. This method must be
-// called after authentication, but before sending any other messages to the
-// bus. Hello must not be called for shared connections.
-func (conn *Conn) Hello() error {
-	var s string
-	err := conn.busObj.Call("org.freedesktop.DBus.Hello", 0).Store(&s)
-	if err != nil {
-		return err
-	}
-	conn.namesLck.Lock()
-	conn.names = make([]string, 1)
-	conn.names[0] = s
-	conn.namesLck.Unlock()
-	return nil
-}
-
-// inWorker runs in an own goroutine, reading incoming messages from the
-// transport and dispatching them appropiately.
-func (conn *Conn) inWorker() {
-	for {
-		msg, err := conn.ReadMessage()
-		if err == nil {
-			conn.eavesdroppedLck.Lock()
-			if conn.eavesdropped != nil {
-				select {
-				case conn.eavesdropped <- msg:
-				default:
-				}
-				conn.eavesdroppedLck.Unlock()
-				continue
-			}
-			conn.eavesdroppedLck.Unlock()
-			dest, _ := msg.Headers[FieldDestination].value.(string)
-			found := false
-			if dest == "" {
-				found = true
-			} else {
-				conn.namesLck.RLock()
-				if len(conn.names) == 0 {
-					found = true
-				}
-				for _, v := range conn.names {
-					if dest == v {
-						found = true
-						break
-					}
-				}
-				conn.namesLck.RUnlock()
-			}
-			if !found {
-				// Eavesdropped a message, but no channel for it is registered.
-				// Ignore it.
-				continue
-			}
-			switch msg.Type {
-			case TypeMethodReply, TypeError:
-				serial := msg.Headers[FieldReplySerial].value.(uint32)
-				conn.callsLck.Lock()
-				if c, ok := conn.calls[serial]; ok {
-					if msg.Type == TypeError {
-						name, _ := msg.Headers[FieldErrorName].value.(string)
-						c.Err = Error{name, msg.Body}
-					} else {
-						c.Body = msg.Body
-					}
-					c.Done <- c
-					conn.serialLck.Lock()
-					delete(conn.serialUsed, serial)
-					conn.serialLck.Unlock()
-					delete(conn.calls, serial)
-				}
-				conn.callsLck.Unlock()
-			case TypeSignal:
-				iface := msg.Headers[FieldInterface].value.(string)
-				member := msg.Headers[FieldMember].value.(string)
-				// as per http://dbus.freedesktop.org/doc/dbus-specification.html ,
-				// sender is optional for signals.
-				sender, _ := msg.Headers[FieldSender].value.(string)
-				if iface == "org.freedesktop.DBus" && sender == "org.freedesktop.DBus" {
-					if member == "NameLost" {
-						// If we lost the name on the bus, remove it from our
-						// tracking list.
-						name, ok := msg.Body[0].(string)
-						if !ok {
-							panic("Unable to read the lost name")
-						}
-						conn.namesLck.Lock()
-						for i, v := range conn.names {
-							if v == name {
-								conn.names = append(conn.names[:i],
-									conn.names[i+1:]...)
-							}
-						}
-						conn.namesLck.Unlock()
-					} else if member == "NameAcquired" {
-						// If we acquired the name on the bus, add it to our
-						// tracking list.
-						name, ok := msg.Body[0].(string)
-						if !ok {
-							panic("Unable to read the acquired name")
-						}
-						conn.namesLck.Lock()
-						conn.names = append(conn.names, name)
-						conn.namesLck.Unlock()
-					}
-				}
-				signal := &Signal{
-					Sender: sender,
-					Path:   msg.Headers[FieldPath].value.(ObjectPath),
-					Name:   iface + "." + member,
-					Body:   msg.Body,
-				}
-				conn.signalsLck.Lock()
-				for _, ch := range conn.signals {
-					ch <- signal
-				}
-				conn.signalsLck.Unlock()
-			case TypeMethodCall:
-				go conn.handleCall(msg)
-			}
-		} else if _, ok := err.(InvalidMessageError); !ok {
-			// Some read error occured (usually EOF); we can't really do
-			// anything but to shut down all stuff and returns errors to all
-			// pending replies.
-			conn.Close()
-			conn.callsLck.RLock()
-			for _, v := range conn.calls {
-				v.Err = err
-				v.Done <- v
-			}
-			conn.callsLck.RUnlock()
-			return
-		}
-		// invalid messages are ignored
-	}
-}
-
-// Names returns the list of all names that are currently owned by this
-// connection. The slice is always at least one element long, the first element
-// being the unique name of the connection.
-func (conn *Conn) Names() []string {
-	conn.namesLck.RLock()
-	// copy the slice so it can't be modified
-	s := make([]string, len(conn.names))
-	copy(s, conn.names)
-	conn.namesLck.RUnlock()
-	return s
-}
-
-// Object returns the object identified by the given destination name and path.
-func (conn *Conn) Object(dest string, path ObjectPath) BusObject {
-	return &Object{conn, dest, path}
-}
-
-// outWorker runs in an own goroutine, encoding and sending messages that are
-// sent to conn.out.
-func (conn *Conn) outWorker() {
-	for msg := range conn.out {
-		err := conn.SendMessage(msg)
-		conn.callsLck.RLock()
-		if err != nil {
-			if c := conn.calls[msg.serial]; c != nil {
-				c.Err = err
-				c.Done <- c
-			}
-			conn.serialLck.Lock()
-			delete(conn.serialUsed, msg.serial)
-			conn.serialLck.Unlock()
-		} else if msg.Type != TypeMethodCall {
-			conn.serialLck.Lock()
-			delete(conn.serialUsed, msg.serial)
-			conn.serialLck.Unlock()
-		}
-		conn.callsLck.RUnlock()
-	}
-}
-
-// Send sends the given message to the message bus. You usually don't need to
-// use this; use the higher-level equivalents (Call / Go, Emit and Export)
-// instead. If msg is a method call and NoReplyExpected is not set, a non-nil
-// call is returned and the same value is sent to ch (which must be buffered)
-// once the call is complete. Otherwise, ch is ignored and a Call structure is
-// returned of which only the Err member is valid.
-func (conn *Conn) Send(msg *Message, ch chan *Call) *Call {
-	var call *Call
-
-	msg.serial = conn.getSerial()
-	if msg.Type == TypeMethodCall && msg.Flags&FlagNoReplyExpected == 0 {
-		if ch == nil {
-			ch = make(chan *Call, 5)
-		} else if cap(ch) == 0 {
-			panic("dbus: unbuffered channel passed to (*Conn).Send")
-		}
-		call = new(Call)
-		call.Destination, _ = msg.Headers[FieldDestination].value.(string)
-		call.Path, _ = msg.Headers[FieldPath].value.(ObjectPath)
-		iface, _ := msg.Headers[FieldInterface].value.(string)
-		member, _ := msg.Headers[FieldMember].value.(string)
-		call.Method = iface + "." + member
-		call.Args = msg.Body
-		call.Done = ch
-		conn.callsLck.Lock()
-		conn.calls[msg.serial] = call
-		conn.callsLck.Unlock()
-		conn.outLck.RLock()
-		if conn.closed {
-			call.Err = ErrClosed
-			call.Done <- call
-		} else {
-			conn.out <- msg
-		}
-		conn.outLck.RUnlock()
-	} else {
-		conn.outLck.RLock()
-		if conn.closed {
-			call = &Call{Err: ErrClosed}
-		} else {
-			conn.out <- msg
-			call = &Call{Err: nil}
-		}
-		conn.outLck.RUnlock()
-	}
-	return call
-}
-
-// sendError creates an error message corresponding to the parameters and sends
-// it to conn.out.
-func (conn *Conn) sendError(e Error, dest string, serial uint32) {
-	msg := new(Message)
-	msg.Type = TypeError
-	msg.serial = conn.getSerial()
-	msg.Headers = make(map[HeaderField]Variant)
-	if dest != "" {
-		msg.Headers[FieldDestination] = MakeVariant(dest)
-	}
-	msg.Headers[FieldErrorName] = MakeVariant(e.Name)
-	msg.Headers[FieldReplySerial] = MakeVariant(serial)
-	msg.Body = e.Body
-	if len(e.Body) > 0 {
-		msg.Headers[FieldSignature] = MakeVariant(SignatureOf(e.Body...))
-	}
-	conn.outLck.RLock()
-	if !conn.closed {
-		conn.out <- msg
-	}
-	conn.outLck.RUnlock()
-}
-
-// sendReply creates a method reply message corresponding to the parameters and
-// sends it to conn.out.
-func (conn *Conn) sendReply(dest string, serial uint32, values ...interface{}) {
-	msg := new(Message)
-	msg.Type = TypeMethodReply
-	msg.serial = conn.getSerial()
-	msg.Headers = make(map[HeaderField]Variant)
-	if dest != "" {
-		msg.Headers[FieldDestination] = MakeVariant(dest)
-	}
-	msg.Headers[FieldReplySerial] = MakeVariant(serial)
-	msg.Body = values
-	if len(values) > 0 {
-		msg.Headers[FieldSignature] = MakeVariant(SignatureOf(values...))
-	}
-	conn.outLck.RLock()
-	if !conn.closed {
-		conn.out <- msg
-	}
-	conn.outLck.RUnlock()
-}
-
-// Signal registers the given channel to be passed all received signal messages.
-// The caller has to make sure that ch is sufficiently buffered; if a message
-// arrives when a write to c is not possible, it is discarded.
-//
-// Multiple of these channels can be registered at the same time.
-//
-// These channels are "overwritten" by Eavesdrop; i.e., if there currently is a
-// channel for eavesdropped messages, this channel receives all signals, and
-// none of the channels passed to Signal will receive any signals.
-func (conn *Conn) Signal(ch chan<- *Signal) {
-	conn.signalsLck.Lock()
-	conn.signals = append(conn.signals, ch)
-	conn.signalsLck.Unlock()
-}
-
-// RemoveSignal removes the given channel from the list of the registered channels.
-func (conn *Conn) RemoveSignal(ch chan<- *Signal) {
-	conn.signalsLck.Lock()
-	for i := len(conn.signals) - 1; i >= 0; i-- {
-		if ch == conn.signals[i] {
-			copy(conn.signals[i:], conn.signals[i+1:])
-			conn.signals[len(conn.signals)-1] = nil
-			conn.signals = conn.signals[:len(conn.signals)-1]
-		}
-	}
-	conn.signalsLck.Unlock()
-}
-
-// SupportsUnixFDs returns whether the underlying transport supports passing of
-// unix file descriptors. If this is false, method calls containing unix file
-// descriptors will return an error and emitted signals containing them will
-// not be sent.
-func (conn *Conn) SupportsUnixFDs() bool {
-	return conn.unixFD
-}
-
-// Error represents a D-Bus message of type Error.
-type Error struct {
-	Name string
-	Body []interface{}
-}
-
-func NewError(name string, body []interface{}) *Error {
-	return &Error{name, body}
-}
-
-func (e Error) Error() string {
-	if len(e.Body) >= 1 {
-		s, ok := e.Body[0].(string)
-		if ok {
-			return s
-		}
-	}
-	return e.Name
-}
-
-// Signal represents a D-Bus message of type Signal. The name member is given in
-// "interface.member" notation, e.g. org.freedesktop.D-Bus.NameLost.
-type Signal struct {
-	Sender string
-	Path   ObjectPath
-	Name   string
-	Body   []interface{}
-}
-
-// transport is a D-Bus transport.
-type transport interface {
-	// Read and Write raw data (for example, for the authentication protocol).
-	io.ReadWriteCloser
-
-	// Send the initial null byte used for the EXTERNAL mechanism.
-	SendNullByte() error
-
-	// Returns whether this transport supports passing Unix FDs.
-	SupportsUnixFDs() bool
-
-	// Signal the transport that Unix FD passing is enabled for this connection.
-	EnableUnixFDs()
-
-	// Read / send a message, handling things like Unix FDs.
-	ReadMessage() (*Message, error)
-	SendMessage(*Message) error
-}
-
-var (
-	transports = make(map[string]func(string) (transport, error))
-)
-
-func getTransport(address string) (transport, error) {
-	var err error
-	var t transport
-
-	addresses := strings.Split(address, ";")
-	for _, v := range addresses {
-		i := strings.IndexRune(v, ':')
-		if i == -1 {
-			err = errors.New("dbus: invalid bus address (no transport)")
-			continue
-		}
-		f := transports[v[:i]]
-		if f == nil {
-			err = errors.New("dbus: invalid bus address (invalid or unsupported transport)")
-			continue
-		}
-		t, err = f(v[i+1:])
-		if err == nil {
-			return t, nil
-		}
-	}
-	return nil, err
-}
-
-// dereferenceAll returns a slice that, assuming that vs is a slice of pointers
-// of arbitrary types, containes the values that are obtained from dereferencing
-// all elements in vs.
-func dereferenceAll(vs []interface{}) []interface{} {
-	for i := range vs {
-		v := reflect.ValueOf(vs[i])
-		v = v.Elem()
-		vs[i] = v.Interface()
-	}
-	return vs
-}
-
-// getKey gets a key from a the list of keys. Returns "" on error / not found...
-func getKey(s, key string) string {
-	i := strings.Index(s, key)
-	if i == -1 {
-		return ""
-	}
-	if i+len(key)+1 >= len(s) || s[i+len(key)] != '=' {
-		return ""
-	}
-	j := strings.Index(s, ",")
-	if j == -1 {
-		j = len(s)
-	}
-	return s[i+len(key)+1 : j]
-}

vendor/src/github.com/godbus/dbus/conn_darwin.go

@@ -1,21 +0,0 @@
-package dbus
-
-import (
-	"errors"
-	"os/exec"
-)
-
-func sessionBusPlatform() (*Conn, error) {
-	cmd := exec.Command("launchctl", "getenv", "DBUS_LAUNCHD_SESSION_BUS_SOCKET")
-	b, err := cmd.CombinedOutput()
-
-	if err != nil {
-		return nil, err
-	}
-
-	if len(b) == 0 {
-		return nil, errors.New("dbus: couldn't determine address of session bus")
-	}
-
-	return Dial("unix:path=" + string(b[:len(b)-1]))
-}

vendor/src/github.com/godbus/dbus/conn_other.go

@@ -1,27 +0,0 @@
-// +build !darwin
-
-package dbus
-
-import (
-	"bytes"
-	"errors"
-	"os/exec"
-)
-
-func sessionBusPlatform() (*Conn, error) {
-	cmd := exec.Command("dbus-launch")
-	b, err := cmd.CombinedOutput()
-
-	if err != nil {
-		return nil, err
-	}
-
-	i := bytes.IndexByte(b, '=')
-	j := bytes.IndexByte(b, '\n')
-
-	if i == -1 || j == -1 {
-		return nil, errors.New("dbus: couldn't determine address of session bus")
-	}
-
-	return Dial(string(b[i+1 : j]))
-}

vendor/src/github.com/godbus/dbus/dbus.go

@@ -1,258 +0,0 @@
-package dbus
-
-import (
-	"errors"
-	"reflect"
-	"strings"
-)
-
-var (
-	byteType        = reflect.TypeOf(byte(0))
-	boolType        = reflect.TypeOf(false)
-	uint8Type       = reflect.TypeOf(uint8(0))
-	int16Type       = reflect.TypeOf(int16(0))
-	uint16Type      = reflect.TypeOf(uint16(0))
-	int32Type       = reflect.TypeOf(int32(0))
-	uint32Type      = reflect.TypeOf(uint32(0))
-	int64Type       = reflect.TypeOf(int64(0))
-	uint64Type      = reflect.TypeOf(uint64(0))
-	float64Type     = reflect.TypeOf(float64(0))
-	stringType      = reflect.TypeOf("")
-	signatureType   = reflect.TypeOf(Signature{""})
-	objectPathType  = reflect.TypeOf(ObjectPath(""))
-	variantType     = reflect.TypeOf(Variant{Signature{""}, nil})
-	interfacesType  = reflect.TypeOf([]interface{}{})
-	unixFDType      = reflect.TypeOf(UnixFD(0))
-	unixFDIndexType = reflect.TypeOf(UnixFDIndex(0))
-)
-
-// An InvalidTypeError signals that a value which cannot be represented in the
-// D-Bus wire format was passed to a function.
-type InvalidTypeError struct {
-	Type reflect.Type
-}
-
-func (e InvalidTypeError) Error() string {
-	return "dbus: invalid type " + e.Type.String()
-}
-
-// Store copies the values contained in src to dest, which must be a slice of
-// pointers. It converts slices of interfaces from src to corresponding structs
-// in dest. An error is returned if the lengths of src and dest or the types of
-// their elements don't match.
-func Store(src []interface{}, dest ...interface{}) error {
-	if len(src) != len(dest) {
-		return errors.New("dbus.Store: length mismatch")
-	}
-
-	for i := range src {
-		if err := store(src[i], dest[i]); err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
-func store(src, dest interface{}) error {
-	if reflect.TypeOf(dest).Elem() == reflect.TypeOf(src) {
-		reflect.ValueOf(dest).Elem().Set(reflect.ValueOf(src))
-		return nil
-	} else if hasStruct(dest) {
-		rv := reflect.ValueOf(dest).Elem()
-		switch rv.Kind() {
-		case reflect.Struct:
-			vs, ok := src.([]interface{})
-			if !ok {
-				return errors.New("dbus.Store: type mismatch")
-			}
-			t := rv.Type()
-			ndest := make([]interface{}, 0, rv.NumField())
-			for i := 0; i < rv.NumField(); i++ {
-				field := t.Field(i)
-				if field.PkgPath == "" && field.Tag.Get("dbus") != "-" {
-					ndest = append(ndest, rv.Field(i).Addr().Interface())
-				}
-			}
-			if len(vs) != len(ndest) {
-				return errors.New("dbus.Store: type mismatch")
-			}
-			err := Store(vs, ndest...)
-			if err != nil {
-				return errors.New("dbus.Store: type mismatch")
-			}
-		case reflect.Slice:
-			sv := reflect.ValueOf(src)
-			if sv.Kind() != reflect.Slice {
-				return errors.New("dbus.Store: type mismatch")
-			}
-			rv.Set(reflect.MakeSlice(rv.Type(), sv.Len(), sv.Len()))
-			for i := 0; i < sv.Len(); i++ {
-				if err := store(sv.Index(i).Interface(), rv.Index(i).Addr().Interface()); err != nil {
-					return err
-				}
-			}
-		case reflect.Map:
-			sv := reflect.ValueOf(src)
-			if sv.Kind() != reflect.Map {
-				return errors.New("dbus.Store: type mismatch")
-			}
-			keys := sv.MapKeys()
-			rv.Set(reflect.MakeMap(sv.Type()))
-			for _, key := range keys {
-				v := reflect.New(sv.Type().Elem())
-				if err := store(v, sv.MapIndex(key).Interface()); err != nil {
-					return err
-				}
-				rv.SetMapIndex(key, v.Elem())
-			}
-		default:
-			return errors.New("dbus.Store: type mismatch")
-		}
-		return nil
-	} else {
-		return errors.New("dbus.Store: type mismatch")
-	}
-}
-
-func hasStruct(v interface{}) bool {
-	t := reflect.TypeOf(v)
-	for {
-		switch t.Kind() {
-		case reflect.Struct:
-			return true
-		case reflect.Slice, reflect.Ptr, reflect.Map:
-			t = t.Elem()
-		default:
-			return false
-		}
-	}
-}
-
-// An ObjectPath is an object path as defined by the D-Bus spec.
-type ObjectPath string
-
-// IsValid returns whether the object path is valid.
-func (o ObjectPath) IsValid() bool {
-	s := string(o)
-	if len(s) == 0 {
-		return false
-	}
-	if s[0] != '/' {
-		return false
-	}
-	if s[len(s)-1] == '/' && len(s) != 1 {
-		return false
-	}
-	// probably not used, but technically possible
-	if s == "/" {
-		return true
-	}
-	split := strings.Split(s[1:], "/")
-	for _, v := range split {
-		if len(v) == 0 {
-			return false
-		}
-		for _, c := range v {
-			if !isMemberChar(c) {
-				return false
-			}
-		}
-	}
-	return true
-}
-
-// A UnixFD is a Unix file descriptor sent over the wire. See the package-level
-// documentation for more information about Unix file descriptor passsing.
-type UnixFD int32
-
-// A UnixFDIndex is the representation of a Unix file descriptor in a message.
-type UnixFDIndex uint32
-
-// alignment returns the alignment of values of type t.
-func alignment(t reflect.Type) int {
-	switch t {
-	case variantType:
-		return 1
-	case objectPathType:
-		return 4
-	case signatureType:
-		return 1
-	case interfacesType: // sometimes used for structs
-		return 8
-	}
-	switch t.Kind() {
-	case reflect.Uint8:
-		return 1
-	case reflect.Uint16, reflect.Int16:
-		return 2
-	case reflect.Uint32, reflect.Int32, reflect.String, reflect.Array, reflect.Slice, reflect.Map:
-		return 4
-	case reflect.Uint64, reflect.Int64, reflect.Float64, reflect.Struct:
-		return 8
-	case reflect.Ptr:
-		return alignment(t.Elem())
-	}
-	return 1
-}
-
-// isKeyType returns whether t is a valid type for a D-Bus dict.
-func isKeyType(t reflect.Type) bool {
-	switch t.Kind() {
-	case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64,
-		reflect.Int16, reflect.Int32, reflect.Int64, reflect.Float64,
-		reflect.String:
-
-		return true
-	}
-	return false
-}
-
-// isValidInterface returns whether s is a valid name for an interface.
-func isValidInterface(s string) bool {
-	if len(s) == 0 || len(s) > 255 || s[0] == '.' {
-		return false
-	}
-	elem := strings.Split(s, ".")
-	if len(elem) < 2 {
-		return false
-	}
-	for _, v := range elem {
-		if len(v) == 0 {
-			return false
-		}
-		if v[0] >= '0' && v[0] <= '9' {
-			return false
-		}
-		for _, c := range v {
-			if !isMemberChar(c) {
-				return false
-			}
-		}
-	}
-	return true
-}
-
-// isValidMember returns whether s is a valid name for a member.
-func isValidMember(s string) bool {
-	if len(s) == 0 || len(s) > 255 {
-		return false
-	}
-	i := strings.Index(s, ".")
-	if i != -1 {
-		return false
-	}
-	if s[0] >= '0' && s[0] <= '9' {
-		return false
-	}
-	for _, c := range s {
-		if !isMemberChar(c) {
-			return false
-		}
-	}
-	return true
-}
-
-func isMemberChar(c rune) bool {
-	return (c >= '0' && c <= '9') || (c >= 'A' && c <= 'Z') ||
-		(c >= 'a' && c <= 'z') || c == '_'
-}

vendor/src/github.com/godbus/dbus/decoder.go

@@ -1,228 +0,0 @@
-package dbus
-
-import (
-	"encoding/binary"
-	"io"
-	"reflect"
-)
-
-type decoder struct {
-	in    io.Reader
-	order binary.ByteOrder
-	pos   int
-}
-
-// newDecoder returns a new decoder that reads values from in. The input is
-// expected to be in the given byte order.
-func newDecoder(in io.Reader, order binary.ByteOrder) *decoder {
-	dec := new(decoder)
-	dec.in = in
-	dec.order = order
-	return dec
-}
-
-// align aligns the input to the given boundary and panics on error.
-func (dec *decoder) align(n int) {
-	if dec.pos%n != 0 {
-		newpos := (dec.pos + n - 1) & ^(n - 1)
-		empty := make([]byte, newpos-dec.pos)
-		if _, err := io.ReadFull(dec.in, empty); err != nil {
-			panic(err)
-		}
-		dec.pos = newpos
-	}
-}
-
-// Calls binary.Read(dec.in, dec.order, v) and panics on read errors.
-func (dec *decoder) binread(v interface{}) {
-	if err := binary.Read(dec.in, dec.order, v); err != nil {
-		panic(err)
-	}
-}
-
-func (dec *decoder) Decode(sig Signature) (vs []interface{}, err error) {
-	defer func() {
-		var ok bool
-		v := recover()
-		if err, ok = v.(error); ok {
-			if err == io.EOF || err == io.ErrUnexpectedEOF {
-				err = FormatError("unexpected EOF")
-			}
-		}
-	}()
-	vs = make([]interface{}, 0)
-	s := sig.str
-	for s != "" {
-		err, rem := validSingle(s, 0)
-		if err != nil {
-			return nil, err
-		}
-		v := dec.decode(s[:len(s)-len(rem)], 0)
-		vs = append(vs, v)
-		s = rem
-	}
-	return vs, nil
-}
-
-func (dec *decoder) decode(s string, depth int) interface{} {
-	dec.align(alignment(typeFor(s)))
-	switch s[0] {
-	case 'y':
-		var b [1]byte
-		if _, err := dec.in.Read(b[:]); err != nil {
-			panic(err)
-		}
-		dec.pos++
-		return b[0]
-	case 'b':
-		i := dec.decode("u", depth).(uint32)
-		switch {
-		case i == 0:
-			return false
-		case i == 1:
-			return true
-		default:
-			panic(FormatError("invalid value for boolean"))
-		}
-	case 'n':
-		var i int16
-		dec.binread(&i)
-		dec.pos += 2
-		return i
-	case 'i':
-		var i int32
-		dec.binread(&i)
-		dec.pos += 4
-		return i
-	case 'x':
-		var i int64
-		dec.binread(&i)
-		dec.pos += 8
-		return i
-	case 'q':
-		var i uint16
-		dec.binread(&i)
-		dec.pos += 2
-		return i
-	case 'u':
-		var i uint32
-		dec.binread(&i)
-		dec.pos += 4
-		return i
-	case 't':
-		var i uint64
-		dec.binread(&i)
-		dec.pos += 8
-		return i
-	case 'd':
-		var f float64
-		dec.binread(&f)
-		dec.pos += 8
-		return f
-	case 's':
-		length := dec.decode("u", depth).(uint32)
-		b := make([]byte, int(length)+1)
-		if _, err := io.ReadFull(dec.in, b); err != nil {
-			panic(err)
-		}
-		dec.pos += int(length) + 1
-		return string(b[:len(b)-1])
-	case 'o':
-		return ObjectPath(dec.decode("s", depth).(string))
-	case 'g':
-		length := dec.decode("y", depth).(byte)
-		b := make([]byte, int(length)+1)
-		if _, err := io.ReadFull(dec.in, b); err != nil {
-			panic(err)
-		}
-		dec.pos += int(length) + 1
-		sig, err := ParseSignature(string(b[:len(b)-1]))
-		if err != nil {
-			panic(err)
-		}
-		return sig
-	case 'v':
-		if depth >= 64 {
-			panic(FormatError("input exceeds container depth limit"))
-		}
-		var variant Variant
-		sig := dec.decode("g", depth).(Signature)
-		if len(sig.str) == 0 {
-			panic(FormatError("variant signature is empty"))
-		}
-		err, rem := validSingle(sig.str, 0)
-		if err != nil {
-			panic(err)
-		}
-		if rem != "" {
-			panic(FormatError("variant signature has multiple types"))
-		}
-		variant.sig = sig
-		variant.value = dec.decode(sig.str, depth+1)
-		return variant
-	case 'h':
-		return UnixFDIndex(dec.decode("u", depth).(uint32))
-	case 'a':
-		if len(s) > 1 && s[1] == '{' {
-			ksig := s[2:3]
-			vsig := s[3 : len(s)-1]
-			v := reflect.MakeMap(reflect.MapOf(typeFor(ksig), typeFor(vsig)))
-			if depth >= 63 {
-				panic(FormatError("input exceeds container depth limit"))
-			}
-			length := dec.decode("u", depth).(uint32)
-			// Even for empty maps, the correct padding must be included
-			dec.align(8)
-			spos := dec.pos
-			for dec.pos < spos+int(length) {
-				dec.align(8)
-				if !isKeyType(v.Type().Key()) {
-					panic(InvalidTypeError{v.Type()})
-				}
-				kv := dec.decode(ksig, depth+2)
-				vv := dec.decode(vsig, depth+2)
-				v.SetMapIndex(reflect.ValueOf(kv), reflect.ValueOf(vv))
-			}
-			return v.Interface()
-		}
-		if depth >= 64 {
-			panic(FormatError("input exceeds container depth limit"))
-		}
-		length := dec.decode("u", depth).(uint32)
-		v := reflect.MakeSlice(reflect.SliceOf(typeFor(s[1:])), 0, int(length))
-		// Even for empty arrays, the correct padding must be included
-		dec.align(alignment(typeFor(s[1:])))
-		spos := dec.pos
-		for dec.pos < spos+int(length) {
-			ev := dec.decode(s[1:], depth+1)
-			v = reflect.Append(v, reflect.ValueOf(ev))
-		}
-		return v.Interface()
-	case '(':
-		if depth >= 64 {
-			panic(FormatError("input exceeds container depth limit"))
-		}
-		dec.align(8)
-		v := make([]interface{}, 0)
-		s = s[1 : len(s)-1]
-		for s != "" {
-			err, rem := validSingle(s, 0)
-			if err != nil {
-				panic(err)
-			}
-			ev := dec.decode(s[:len(s)-len(rem)], depth+1)
-			v = append(v, ev)
-			s = rem
-		}
-		return v
-	default:
-		panic(SignatureError{Sig: s})
-	}
-}
-
-// A FormatError is an error in the wire format.
-type FormatError string
-
-func (e FormatError) Error() string {
-	return "dbus: wire format error: " + string(e)
-}

vendor/src/github.com/godbus/dbus/doc.go

@@ -1,63 +0,0 @@
-/*
-Package dbus implements bindings to the D-Bus message bus system.
-
-To use the message bus API, you first need to connect to a bus (usually the
-session or system bus). The acquired connection then can be used to call methods
-on remote objects and emit or receive signals. Using the Export method, you can
-arrange D-Bus methods calls to be directly translated to method calls on a Go
-value.
-
-Conversion Rules
-
-For outgoing messages, Go types are automatically converted to the
-corresponding D-Bus types. The following types are directly encoded as their
-respective D-Bus equivalents:
-
-     Go type     | D-Bus type
-     ------------+-----------
-     byte        | BYTE
-     bool        | BOOLEAN
-     int16       | INT16
-     uint16      | UINT16
-     int32       | INT32
-     uint32      | UINT32
-     int64       | INT64
-     uint64      | UINT64
-     float64     | DOUBLE
-     string      | STRING
-     ObjectPath  | OBJECT_PATH
-     Signature   | SIGNATURE
-     Variant     | VARIANT
-     UnixFDIndex | UNIX_FD
-
-Slices and arrays encode as ARRAYs of their element type.
-
-Maps encode as DICTs, provided that their key type can be used as a key for
-a DICT.
-
-Structs other than Variant and Signature encode as a STRUCT containing their
-exported fields. Fields whose tags contain `dbus:"-"` and unexported fields will
-be skipped.
-
-Pointers encode as the value they're pointed to.
-
-Trying to encode any other type or a slice, map or struct containing an
-unsupported type will result in an InvalidTypeError.
-
-For incoming messages, the inverse of these rules are used, with the exception
-of STRUCTs. Incoming STRUCTS are represented as a slice of empty interfaces
-containing the struct fields in the correct order. The Store function can be
-used to convert such values to Go structs.
-
-Unix FD passing
-
-Handling Unix file descriptors deserves special mention. To use them, you should
-first check that they are supported on a connection by calling SupportsUnixFDs.
-If it returns true, all method of Connection will translate messages containing
-UnixFD's to messages that are accompanied by the given file descriptors with the
-UnixFD values being substituted by the correct indices. Similarily, the indices
-of incoming messages are automatically resolved. It shouldn't be necessary to use
-UnixFDIndex.
-
-*/
-package dbus

vendor/src/github.com/godbus/dbus/encoder.go

@@ -1,208 +0,0 @@
-package dbus
-
-import (
-	"bytes"
-	"encoding/binary"
-	"io"
-	"reflect"
-)
-
-// An encoder encodes values to the D-Bus wire format.
-type encoder struct {
-	out   io.Writer
-	order binary.ByteOrder
-	pos   int
-}
-
-// NewEncoder returns a new encoder that writes to out in the given byte order.
-func newEncoder(out io.Writer, order binary.ByteOrder) *encoder {
-	return newEncoderAtOffset(out, 0, order)
-}
-
-// newEncoderAtOffset returns a new encoder that writes to out in the given
-// byte order. Specify the offset to initialize pos for proper alignment
-// computation.
-func newEncoderAtOffset(out io.Writer, offset int, order binary.ByteOrder) *encoder {
-	enc := new(encoder)
-	enc.out = out
-	enc.order = order
-	enc.pos = offset
-	return enc
-}
-
-// Aligns the next output to be on a multiple of n. Panics on write errors.
-func (enc *encoder) align(n int) {
-	pad := enc.padding(0, n)
-	if pad > 0 {
-		empty := make([]byte, pad)
-		if _, err := enc.out.Write(empty); err != nil {
-			panic(err)
-		}
-		enc.pos += pad
-	}
-}
-
-// pad returns the number of bytes of padding, based on current position and additional offset.
-// and alignment.
-func (enc *encoder) padding(offset, algn int) int {
-	abs := enc.pos + offset
-	if abs%algn != 0 {
-		newabs := (abs + algn - 1) & ^(algn - 1)
-		return newabs - abs
-	}
-	return 0
-}
-
-// Calls binary.Write(enc.out, enc.order, v) and panics on write errors.
-func (enc *encoder) binwrite(v interface{}) {
-	if err := binary.Write(enc.out, enc.order, v); err != nil {
-		panic(err)
-	}
-}
-
-// Encode encodes the given values to the underyling reader. All written values
-// are aligned properly as required by the D-Bus spec.
-func (enc *encoder) Encode(vs ...interface{}) (err error) {
-	defer func() {
-		err, _ = recover().(error)
-	}()
-	for _, v := range vs {
-		enc.encode(reflect.ValueOf(v), 0)
-	}
-	return nil
-}
-
-// encode encodes the given value to the writer and panics on error. depth holds
-// the depth of the container nesting.
-func (enc *encoder) encode(v reflect.Value, depth int) {
-	enc.align(alignment(v.Type()))
-	switch v.Kind() {
-	case reflect.Uint8:
-		var b [1]byte
-		b[0] = byte(v.Uint())
-		if _, err := enc.out.Write(b[:]); err != nil {
-			panic(err)
-		}
-		enc.pos++
-	case reflect.Bool:
-		if v.Bool() {
-			enc.encode(reflect.ValueOf(uint32(1)), depth)
-		} else {
-			enc.encode(reflect.ValueOf(uint32(0)), depth)
-		}
-	case reflect.Int16:
-		enc.binwrite(int16(v.Int()))
-		enc.pos += 2
-	case reflect.Uint16:
-		enc.binwrite(uint16(v.Uint()))
-		enc.pos += 2
-	case reflect.Int32:
-		enc.binwrite(int32(v.Int()))
-		enc.pos += 4
-	case reflect.Uint32:
-		enc.binwrite(uint32(v.Uint()))
-		enc.pos += 4
-	case reflect.Int64:
-		enc.binwrite(v.Int())
-		enc.pos += 8
-	case reflect.Uint64:
-		enc.binwrite(v.Uint())
-		enc.pos += 8
-	case reflect.Float64:
-		enc.binwrite(v.Float())
-		enc.pos += 8
-	case reflect.String:
-		enc.encode(reflect.ValueOf(uint32(len(v.String()))), depth)
-		b := make([]byte, v.Len()+1)
-		copy(b, v.String())
-		b[len(b)-1] = 0
-		n, err := enc.out.Write(b)
-		if err != nil {
-			panic(err)
-		}
-		enc.pos += n
-	case reflect.Ptr:
-		enc.encode(v.Elem(), depth)
-	case reflect.Slice, reflect.Array:
-		if depth >= 64 {
-			panic(FormatError("input exceeds container depth limit"))
-		}
-		// Lookahead offset: 4 bytes for uint32 length (with alignment),
-		// plus alignment for elements.
-		n := enc.padding(0, 4) + 4
-		offset := enc.pos + n + enc.padding(n, alignment(v.Type().Elem()))
-
-		var buf bytes.Buffer
-		bufenc := newEncoderAtOffset(&buf, offset, enc.order)
-
-		for i := 0; i < v.Len(); i++ {
-			bufenc.encode(v.Index(i), depth+1)
-		}
-		enc.encode(reflect.ValueOf(uint32(buf.Len())), depth)
-		length := buf.Len()
-		enc.align(alignment(v.Type().Elem()))
-		if _, err := buf.WriteTo(enc.out); err != nil {
-			panic(err)
-		}
-		enc.pos += length
-	case reflect.Struct:
-		if depth >= 64 && v.Type() != signatureType {
-			panic(FormatError("input exceeds container depth limit"))
-		}
-		switch t := v.Type(); t {
-		case signatureType:
-			str := v.Field(0)
-			enc.encode(reflect.ValueOf(byte(str.Len())), depth+1)
-			b := make([]byte, str.Len()+1)
-			copy(b, str.String())
-			b[len(b)-1] = 0
-			n, err := enc.out.Write(b)
-			if err != nil {
-				panic(err)
-			}
-			enc.pos += n
-		case variantType:
-			variant := v.Interface().(Variant)
-			enc.encode(reflect.ValueOf(variant.sig), depth+1)
-			enc.encode(reflect.ValueOf(variant.value), depth+1)
-		default:
-			for i := 0; i < v.Type().NumField(); i++ {
-				field := t.Field(i)
-				if field.PkgPath == "" && field.Tag.Get("dbus") != "-" {
-					enc.encode(v.Field(i), depth+1)
-				}
-			}
-		}
-	case reflect.Map:
-		// Maps are arrays of structures, so they actually increase the depth by
-		// 2.
-		if depth >= 63 {
-			panic(FormatError("input exceeds container depth limit"))
-		}
-		if !isKeyType(v.Type().Key()) {
-			panic(InvalidTypeError{v.Type()})
-		}
-		keys := v.MapKeys()
-		// Lookahead offset: 4 bytes for uint32 length (with alignment),
-		// plus 8-byte alignment
-		n := enc.padding(0, 4) + 4
-		offset := enc.pos + n + enc.padding(n, 8)
-
-		var buf bytes.Buffer
-		bufenc := newEncoderAtOffset(&buf, offset, enc.order)
-		for _, k := range keys {
-			bufenc.align(8)
-			bufenc.encode(k, depth+2)
-			bufenc.encode(v.MapIndex(k), depth+2)
-		}
-		enc.encode(reflect.ValueOf(uint32(buf.Len())), depth)
-		length := buf.Len()
-		enc.align(8)
-		if _, err := buf.WriteTo(enc.out); err != nil {
-			panic(err)
-		}
-		enc.pos += length
-	default:
-		panic(InvalidTypeError{v.Type()})
-	}
-}

vendor/src/github.com/godbus/dbus/export.go

@@ -1,468 +0,0 @@
-package dbus
-
-import (
-	"bytes"
-	"errors"
-	"fmt"
-	"reflect"
-	"strings"
-)
-
-var (
-	errmsgInvalidArg = Error{
-		"org.freedesktop.DBus.Error.InvalidArgs",
-		[]interface{}{"Invalid type / number of args"},
-	}
-	errmsgNoObject = Error{
-		"org.freedesktop.DBus.Error.NoSuchObject",
-		[]interface{}{"No such object"},
-	}
-	errmsgUnknownMethod = Error{
-		"org.freedesktop.DBus.Error.UnknownMethod",
-		[]interface{}{"Unknown / invalid method"},
-	}
-)
-
-// exportedObj represents an exported object. It stores a precomputed
-// method table that represents the methods exported on the bus.
-type exportedObj struct {
-	methods map[string]reflect.Value
-
-	// Whether or not this export is for the entire subtree
-	includeSubtree bool
-}
-
-func (obj exportedObj) Method(name string) (reflect.Value, bool) {
-	out, exists := obj.methods[name]
-	return out, exists
-}
-
-// Sender is a type which can be used in exported methods to receive the message
-// sender.
-type Sender string
-
-func computeMethodName(name string, mapping map[string]string) string {
-	newname, ok := mapping[name]
-	if ok {
-		name = newname
-	}
-	return name
-}
-
-func getMethods(in interface{}, mapping map[string]string) map[string]reflect.Value {
-	if in == nil {
-		return nil
-	}
-	methods := make(map[string]reflect.Value)
-	val := reflect.ValueOf(in)
-	typ := val.Type()
-	for i := 0; i < typ.NumMethod(); i++ {
-		methtype := typ.Method(i)
-		method := val.Method(i)
-		t := method.Type()
-		// only track valid methods must return *Error as last arg
-		// and must be exported
-		if t.NumOut() == 0 ||
-			t.Out(t.NumOut()-1) != reflect.TypeOf(&errmsgInvalidArg) ||
-			methtype.PkgPath != "" {
-			continue
-		}
-		// map names while building table
-		methods[computeMethodName(methtype.Name, mapping)] = method
-	}
-	return methods
-}
-
-// searchHandlers will look through all registered handlers looking for one
-// to handle the given path. If a verbatim one isn't found, it will check for
-// a subtree registration for the path as well.
-func (conn *Conn) searchHandlers(path ObjectPath) (map[string]exportedObj, bool) {
-	conn.handlersLck.RLock()
-	defer conn.handlersLck.RUnlock()
-
-	handlers, ok := conn.handlers[path]
-	if ok {
-		return handlers, ok
-	}
-
-	// If handlers weren't found for this exact path, look for a matching subtree
-	// registration
-	handlers = make(map[string]exportedObj)
-	path = path[:strings.LastIndex(string(path), "/")]
-	for len(path) > 0 {
-		var subtreeHandlers map[string]exportedObj
-		subtreeHandlers, ok = conn.handlers[path]
-		if ok {
-			for iface, handler := range subtreeHandlers {
-				// Only include this handler if it registered for the subtree
-				if handler.includeSubtree {
-					handlers[iface] = handler
-				}
-			}
-
-			break
-		}
-
-		path = path[:strings.LastIndex(string(path), "/")]
-	}
-
-	return handlers, ok
-}
-
-// handleCall handles the given method call (i.e. looks if it's one of the
-// pre-implemented ones and searches for a corresponding handler if not).
-func (conn *Conn) handleCall(msg *Message) {
-	name := msg.Headers[FieldMember].value.(string)
-	path := msg.Headers[FieldPath].value.(ObjectPath)
-	ifaceName, hasIface := msg.Headers[FieldInterface].value.(string)
-	sender, hasSender := msg.Headers[FieldSender].value.(string)
-	serial := msg.serial
-	if ifaceName == "org.freedesktop.DBus.Peer" {
-		switch name {
-		case "Ping":
-			conn.sendReply(sender, serial)
-		case "GetMachineId":
-			conn.sendReply(sender, serial, conn.uuid)
-		default:
-			conn.sendError(errmsgUnknownMethod, sender, serial)
-		}
-		return
-	} else if ifaceName == "org.freedesktop.DBus.Introspectable" && name == "Introspect" {
-		if _, ok := conn.handlers[path]; !ok {
-			subpath := make(map[string]struct{})
-			var xml bytes.Buffer
-			xml.WriteString("<node>")
-			for h, _ := range conn.handlers {
-				p := string(path)
-				if p != "/" {
-					p += "/"
-				}
-				if strings.HasPrefix(string(h), p) {
-					node_name := strings.Split(string(h[len(p):]), "/")[0]
-					subpath[node_name] = struct{}{}
-				}
-			}
-			for s, _ := range subpath {
-				xml.WriteString("\n\t<node name=\"" + s + "\"/>")
-			}
-			xml.WriteString("\n</node>")
-			conn.sendReply(sender, serial, xml.String())
-			return
-		}
-	}
-	if len(name) == 0 {
-		conn.sendError(errmsgUnknownMethod, sender, serial)
-	}
-
-	// Find the exported handler (if any) for this path
-	handlers, ok := conn.searchHandlers(path)
-	if !ok {
-		conn.sendError(errmsgNoObject, sender, serial)
-		return
-	}
-
-	var m reflect.Value
-	var exists bool
-	if hasIface {
-		iface := handlers[ifaceName]
-		m, exists = iface.Method(name)
-	} else {
-		for _, v := range handlers {
-			m, exists = v.Method(name)
-			if exists {
-				break
-			}
-		}
-	}
-
-	if !exists {
-		conn.sendError(errmsgUnknownMethod, sender, serial)
-		return
-	}
-
-	t := m.Type()
-	vs := msg.Body
-	pointers := make([]interface{}, t.NumIn())
-	decode := make([]interface{}, 0, len(vs))
-	for i := 0; i < t.NumIn(); i++ {
-		tp := t.In(i)
-		val := reflect.New(tp)
-		pointers[i] = val.Interface()
-		if tp == reflect.TypeOf((*Sender)(nil)).Elem() {
-			val.Elem().SetString(sender)
-		} else if tp == reflect.TypeOf((*Message)(nil)).Elem() {
-			val.Elem().Set(reflect.ValueOf(*msg))
-		} else {
-			decode = append(decode, pointers[i])
-		}
-	}
-
-	if len(decode) != len(vs) {
-		conn.sendError(errmsgInvalidArg, sender, serial)
-		return
-	}
-
-	if err := Store(vs, decode...); err != nil {
-		conn.sendError(errmsgInvalidArg, sender, serial)
-		return
-	}
-
-	// Extract parameters
-	params := make([]reflect.Value, len(pointers))
-	for i := 0; i < len(pointers); i++ {
-		params[i] = reflect.ValueOf(pointers[i]).Elem()
-	}
-
-	// Call method
-	ret := m.Call(params)
-	if em := ret[t.NumOut()-1].Interface().(*Error); em != nil {
-		conn.sendError(*em, sender, serial)
-		return
-	}
-
-	if msg.Flags&FlagNoReplyExpected == 0 {
-		reply := new(Message)
-		reply.Type = TypeMethodReply
-		reply.serial = conn.getSerial()
-		reply.Headers = make(map[HeaderField]Variant)
-		if hasSender {
-			reply.Headers[FieldDestination] = msg.Headers[FieldSender]
-		}
-		reply.Headers[FieldReplySerial] = MakeVariant(msg.serial)
-		reply.Body = make([]interface{}, len(ret)-1)
-		for i := 0; i < len(ret)-1; i++ {
-			reply.Body[i] = ret[i].Interface()
-		}
-		if len(ret) != 1 {
-			reply.Headers[FieldSignature] = MakeVariant(SignatureOf(reply.Body...))
-		}
-		conn.outLck.RLock()
-		if !conn.closed {
-			conn.out <- reply
-		}
-		conn.outLck.RUnlock()
-	}
-}
-
-// Emit emits the given signal on the message bus. The name parameter must be
-// formatted as "interface.member", e.g., "org.freedesktop.DBus.NameLost".
-func (conn *Conn) Emit(path ObjectPath, name string, values ...interface{}) error {
-	if !path.IsValid() {
-		return errors.New("dbus: invalid object path")
-	}
-	i := strings.LastIndex(name, ".")
-	if i == -1 {
-		return errors.New("dbus: invalid method name")
-	}
-	iface := name[:i]
-	member := name[i+1:]
-	if !isValidMember(member) {
-		return errors.New("dbus: invalid method name")
-	}
-	if !isValidInterface(iface) {
-		return errors.New("dbus: invalid interface name")
-	}
-	msg := new(Message)
-	msg.Type = TypeSignal
-	msg.serial = conn.getSerial()
-	msg.Headers = make(map[HeaderField]Variant)
-	msg.Headers[FieldInterface] = MakeVariant(iface)
-	msg.Headers[FieldMember] = MakeVariant(member)
-	msg.Headers[FieldPath] = MakeVariant(path)
-	msg.Body = values
-	if len(values) > 0 {
-		msg.Headers[FieldSignature] = MakeVariant(SignatureOf(values...))
-	}
-	conn.outLck.RLock()
-	defer conn.outLck.RUnlock()
-	if conn.closed {
-		return ErrClosed
-	}
-	conn.out <- msg
-	return nil
-}
-
-// Export registers the given value to be exported as an object on the
-// message bus.
-//
-// If a method call on the given path and interface is received, an exported
-// method with the same name is called with v as the receiver if the
-// parameters match and the last return value is of type *Error. If this
-// *Error is not nil, it is sent back to the caller as an error.
-// Otherwise, a method reply is sent with the other return values as its body.
-//
-// Any parameters with the special type Sender are set to the sender of the
-// dbus message when the method is called. Parameters of this type do not
-// contribute to the dbus signature of the method (i.e. the method is exposed
-// as if the parameters of type Sender were not there).
-//
-// Similarly, any parameters with the type Message are set to the raw message
-// received on the bus. Again, parameters of this type do not contribute to the
-// dbus signature of the method.
-//
-// Every method call is executed in a new goroutine, so the method may be called
-// in multiple goroutines at once.
-//
-// Method calls on the interface org.freedesktop.DBus.Peer will be automatically
-// handled for every object.
-//
-// Passing nil as the first parameter will cause conn to cease handling calls on
-// the given combination of path and interface.
-//
-// Export returns an error if path is not a valid path name.
-func (conn *Conn) Export(v interface{}, path ObjectPath, iface string) error {
-	return conn.ExportWithMap(v, nil, path, iface)
-}
-
-// ExportWithMap works exactly like Export but provides the ability to remap
-// method names (e.g. export a lower-case method).
-//
-// The keys in the map are the real method names (exported on the struct), and
-// the values are the method names to be exported on DBus.
-func (conn *Conn) ExportWithMap(v interface{}, mapping map[string]string, path ObjectPath, iface string) error {
-	return conn.export(getMethods(v, mapping), path, iface, false)
-}
-
-// ExportSubtree works exactly like Export but registers the given value for
-// an entire subtree rather under the root path provided.
-//
-// In order to make this useful, one parameter in each of the value's exported
-// methods should be a Message, in which case it will contain the raw message
-// (allowing one to get access to the path that caused the method to be called).
-//
-// Note that more specific export paths take precedence over less specific. For
-// example, a method call using the ObjectPath /foo/bar/baz will call a method
-// exported on /foo/bar before a method exported on /foo.
-func (conn *Conn) ExportSubtree(v interface{}, path ObjectPath, iface string) error {
-	return conn.ExportSubtreeWithMap(v, nil, path, iface)
-}
-
-// ExportSubtreeWithMap works exactly like ExportSubtree but provides the
-// ability to remap method names (e.g. export a lower-case method).
-//
-// The keys in the map are the real method names (exported on the struct), and
-// the values are the method names to be exported on DBus.
-func (conn *Conn) ExportSubtreeWithMap(v interface{}, mapping map[string]string, path ObjectPath, iface string) error {
-	return conn.export(getMethods(v, mapping), path, iface, true)
-}
-
-// ExportMethodTable like Export registers the given methods as an object
-// on the message bus. Unlike Export the it uses a method table to define
-// the object instead of a native go object.
-//
-// The method table is a map from method name to function closure
-// representing the method. This allows an object exported on the bus to not
-// necessarily be a native go object. It can be useful for generating exposed
-// methods on the fly.
-//
-// Any non-function objects in the method table are ignored.
-func (conn *Conn) ExportMethodTable(methods map[string]interface{}, path ObjectPath, iface string) error {
-	return conn.exportMethodTable(methods, path, iface, false)
-}
-
-// Like ExportSubtree, but with the same caveats as ExportMethodTable.
-func (conn *Conn) ExportSubtreeMethodTable(methods map[string]interface{}, path ObjectPath, iface string) error {
-	return conn.exportMethodTable(methods, path, iface, true)
-}
-
-func (conn *Conn) exportMethodTable(methods map[string]interface{}, path ObjectPath, iface string, includeSubtree bool) error {
-	out := make(map[string]reflect.Value)
-	for name, method := range methods {
-		rval := reflect.ValueOf(method)
-		if rval.Kind() != reflect.Func {
-			continue
-		}
-		t := rval.Type()
-		// only track valid methods must return *Error as last arg
-		if t.NumOut() == 0 ||
-			t.Out(t.NumOut()-1) != reflect.TypeOf(&errmsgInvalidArg) {
-			continue
-		}
-		out[name] = rval
-	}
-	return conn.export(out, path, iface, includeSubtree)
-}
-
-// exportWithMap is the worker function for all exports/registrations.
-func (conn *Conn) export(methods map[string]reflect.Value, path ObjectPath, iface string, includeSubtree bool) error {
-	if !path.IsValid() {
-		return fmt.Errorf(`dbus: Invalid path name: "%s"`, path)
-	}
-
-	conn.handlersLck.Lock()
-	defer conn.handlersLck.Unlock()
-
-	// Remove a previous export if the interface is nil
-	if methods == nil {
-		if _, ok := conn.handlers[path]; ok {
-			delete(conn.handlers[path], iface)
-			if len(conn.handlers[path]) == 0 {
-				delete(conn.handlers, path)
-			}
-		}
-
-		return nil
-	}
-
-	// If this is the first handler for this path, make a new map to hold all
-	// handlers for this path.
-	if _, ok := conn.handlers[path]; !ok {
-		conn.handlers[path] = make(map[string]exportedObj)
-	}
-
-	// Finally, save this handler
-	conn.handlers[path][iface] = exportedObj{
-		methods:        methods,
-		includeSubtree: includeSubtree,
-	}
-
-	return nil
-}
-
-// ReleaseName calls org.freedesktop.DBus.ReleaseName and awaits a response.
-func (conn *Conn) ReleaseName(name string) (ReleaseNameReply, error) {
-	var r uint32
-	err := conn.busObj.Call("org.freedesktop.DBus.ReleaseName", 0, name).Store(&r)
-	if err != nil {
-		return 0, err
-	}
-	return ReleaseNameReply(r), nil
-}
-
-// RequestName calls org.freedesktop.DBus.RequestName and awaits a response.
-func (conn *Conn) RequestName(name string, flags RequestNameFlags) (RequestNameReply, error) {
-	var r uint32
-	err := conn.busObj.Call("org.freedesktop.DBus.RequestName", 0, name, flags).Store(&r)
-	if err != nil {
-		return 0, err
-	}
-	return RequestNameReply(r), nil
-}
-
-// ReleaseNameReply is the reply to a ReleaseName call.
-type ReleaseNameReply uint32
-
-const (
-	ReleaseNameReplyReleased ReleaseNameReply = 1 + iota
-	ReleaseNameReplyNonExistent
-	ReleaseNameReplyNotOwner
-)
-
-// RequestNameFlags represents the possible flags for a RequestName call.
-type RequestNameFlags uint32
-
-const (
-	NameFlagAllowReplacement RequestNameFlags = 1 << iota
-	NameFlagReplaceExisting
-	NameFlagDoNotQueue
-)
-
-// RequestNameReply is the reply to a RequestName call.
-type RequestNameReply uint32
-
-const (
-	RequestNameReplyPrimaryOwner RequestNameReply = 1 + iota
-	RequestNameReplyInQueue
-	RequestNameReplyExists
-	RequestNameReplyAlreadyOwner
-)

vendor/src/github.com/godbus/dbus/homedir.go

@@ -1,28 +0,0 @@
-package dbus
-
-import (
-	"os"
-	"sync"
-)
-
-var (
-	homeDir     string
-	homeDirLock sync.Mutex
-)
-
-func getHomeDir() string {
-	homeDirLock.Lock()
-	defer homeDirLock.Unlock()
-
-	if homeDir != "" {
-		return homeDir
-	}
-
-	homeDir = os.Getenv("HOME")
-	if homeDir != "" {
-		return homeDir
-	}
-
-	homeDir = lookupHomeDir()
-	return homeDir
-}

vendor/src/github.com/godbus/dbus/homedir_dynamic.go

@@ -1,15 +0,0 @@
-// +build !static_build
-
-package dbus
-
-import (
-	"os/user"
-)
-
-func lookupHomeDir() string {
-	u, err := user.Current()
-	if err != nil {
-		return "/"
-	}
-	return u.HomeDir
-}

vendor/src/github.com/godbus/dbus/homedir_static.go

@@ -1,45 +0,0 @@
-// +build static_build
-
-package dbus
-
-import (
-	"bufio"
-	"os"
-	"strconv"
-	"strings"
-)
-
-func lookupHomeDir() string {
-	myUid := os.Getuid()
-
-	f, err := os.Open("/etc/passwd")
-	if err != nil {
-		return "/"
-	}
-	defer f.Close()
-
-	s := bufio.NewScanner(f)
-
-	for s.Scan() {
-		if err := s.Err(); err != nil {
-			break
-		}
-
-		line := strings.TrimSpace(s.Text())
-		if line == "" {
-			continue
-		}
-
-		parts := strings.Split(line, ":")
-
-		if len(parts) >= 6 {
-			uid, err := strconv.Atoi(parts[2])
-			if err == nil && uid == myUid {
-				return parts[5]
-			}
-		}
-	}
-
-	// Default to / if we can't get a better value
-	return "/"
-}

vendor/src/github.com/godbus/dbus/message.go

@@ -1,346 +0,0 @@
-package dbus
-
-import (
-	"bytes"
-	"encoding/binary"
-	"errors"
-	"io"
-	"reflect"
-	"strconv"
-)
-
-const protoVersion byte = 1
-
-// Flags represents the possible flags of a D-Bus message.
-type Flags byte
-
-const (
-	// FlagNoReplyExpected signals that the message is not expected to generate
-	// a reply. If this flag is set on outgoing messages, any possible reply
-	// will be discarded.
-	FlagNoReplyExpected Flags = 1 << iota
-	// FlagNoAutoStart signals that the message bus should not automatically
-	// start an application when handling this message.
-	FlagNoAutoStart
-)
-
-// Type represents the possible types of a D-Bus message.
-type Type byte
-
-const (
-	TypeMethodCall Type = 1 + iota
-	TypeMethodReply
-	TypeError
-	TypeSignal
-	typeMax
-)
-
-func (t Type) String() string {
-	switch t {
-	case TypeMethodCall:
-		return "method call"
-	case TypeMethodReply:
-		return "reply"
-	case TypeError:
-		return "error"
-	case TypeSignal:
-		return "signal"
-	}
-	return "invalid"
-}
-
-// HeaderField represents the possible byte codes for the headers
-// of a D-Bus message.
-type HeaderField byte
-
-const (
-	FieldPath HeaderField = 1 + iota
-	FieldInterface
-	FieldMember
-	FieldErrorName
-	FieldReplySerial
-	FieldDestination
-	FieldSender
-	FieldSignature
-	FieldUnixFDs
-	fieldMax
-)
-
-// An InvalidMessageError describes the reason why a D-Bus message is regarded as
-// invalid.
-type InvalidMessageError string
-
-func (e InvalidMessageError) Error() string {
-	return "dbus: invalid message: " + string(e)
-}
-
-// fieldType are the types of the various header fields.
-var fieldTypes = [fieldMax]reflect.Type{
-	FieldPath:        objectPathType,
-	FieldInterface:   stringType,
-	FieldMember:      stringType,
-	FieldErrorName:   stringType,
-	FieldReplySerial: uint32Type,
-	FieldDestination: stringType,
-	FieldSender:      stringType,
-	FieldSignature:   signatureType,
-	FieldUnixFDs:     uint32Type,
-}
-
-// requiredFields lists the header fields that are required by the different
-// message types.
-var requiredFields = [typeMax][]HeaderField{
-	TypeMethodCall:  {FieldPath, FieldMember},
-	TypeMethodReply: {FieldReplySerial},
-	TypeError:       {FieldErrorName, FieldReplySerial},
-	TypeSignal:      {FieldPath, FieldInterface, FieldMember},
-}
-
-// Message represents a single D-Bus message.
-type Message struct {
-	Type
-	Flags
-	Headers map[HeaderField]Variant
-	Body    []interface{}
-
-	serial uint32
-}
-
-type header struct {
-	Field byte
-	Variant
-}
-
-// DecodeMessage tries to decode a single message in the D-Bus wire format
-// from the given reader. The byte order is figured out from the first byte.
-// The possibly returned error can be an error of the underlying reader, an
-// InvalidMessageError or a FormatError.
-func DecodeMessage(rd io.Reader) (msg *Message, err error) {
-	var order binary.ByteOrder
-	var hlength, length uint32
-	var typ, flags, proto byte
-	var headers []header
-
-	b := make([]byte, 1)
-	_, err = rd.Read(b)
-	if err != nil {
-		return
-	}
-	switch b[0] {
-	case 'l':
-		order = binary.LittleEndian
-	case 'B':
-		order = binary.BigEndian
-	default:
-		return nil, InvalidMessageError("invalid byte order")
-	}
-
-	dec := newDecoder(rd, order)
-	dec.pos = 1
-
-	msg = new(Message)
-	vs, err := dec.Decode(Signature{"yyyuu"})
-	if err != nil {
-		return nil, err
-	}
-	if err = Store(vs, &typ, &flags, &proto, &length, &msg.serial); err != nil {
-		return nil, err
-	}
-	msg.Type = Type(typ)
-	msg.Flags = Flags(flags)
-
-	// get the header length separately because we need it later
-	b = make([]byte, 4)
-	_, err = io.ReadFull(rd, b)
-	if err != nil {
-		return nil, err
-	}
-	binary.Read(bytes.NewBuffer(b), order, &hlength)
-	if hlength+length+16 > 1<<27 {
-		return nil, InvalidMessageError("message is too long")
-	}
-	dec = newDecoder(io.MultiReader(bytes.NewBuffer(b), rd), order)
-	dec.pos = 12
-	vs, err = dec.Decode(Signature{"a(yv)"})
-	if err != nil {
-		return nil, err
-	}
-	if err = Store(vs, &headers); err != nil {
-		return nil, err
-	}
-
-	msg.Headers = make(map[HeaderField]Variant)
-	for _, v := range headers {
-		msg.Headers[HeaderField(v.Field)] = v.Variant
-	}
-
-	dec.align(8)
-	body := make([]byte, int(length))
-	if length != 0 {
-		_, err := io.ReadFull(rd, body)
-		if err != nil {
-			return nil, err
-		}
-	}
-
-	if err = msg.IsValid(); err != nil {
-		return nil, err
-	}
-	sig, _ := msg.Headers[FieldSignature].value.(Signature)
-	if sig.str != "" {
-		buf := bytes.NewBuffer(body)
-		dec = newDecoder(buf, order)
-		vs, err := dec.Decode(sig)
-		if err != nil {
-			return nil, err
-		}
-		msg.Body = vs
-	}
-
-	return
-}
-
-// EncodeTo encodes and sends a message to the given writer. The byte order must
-// be either binary.LittleEndian or binary.BigEndian. If the message is not
-// valid or an error occurs when writing, an error is returned.
-func (msg *Message) EncodeTo(out io.Writer, order binary.ByteOrder) error {
-	if err := msg.IsValid(); err != nil {
-		return err
-	}
-	var vs [7]interface{}
-	switch order {
-	case binary.LittleEndian:
-		vs[0] = byte('l')
-	case binary.BigEndian:
-		vs[0] = byte('B')
-	default:
-		return errors.New("dbus: invalid byte order")
-	}
-	body := new(bytes.Buffer)
-	enc := newEncoder(body, order)
-	if len(msg.Body) != 0 {
-		enc.Encode(msg.Body...)
-	}
-	vs[1] = msg.Type
-	vs[2] = msg.Flags
-	vs[3] = protoVersion
-	vs[4] = uint32(len(body.Bytes()))
-	vs[5] = msg.serial
-	headers := make([]header, 0, len(msg.Headers))
-	for k, v := range msg.Headers {
-		headers = append(headers, header{byte(k), v})
-	}
-	vs[6] = headers
-	var buf bytes.Buffer
-	enc = newEncoder(&buf, order)
-	enc.Encode(vs[:]...)
-	enc.align(8)
-	body.WriteTo(&buf)
-	if buf.Len() > 1<<27 {
-		return InvalidMessageError("message is too long")
-	}
-	if _, err := buf.WriteTo(out); err != nil {
-		return err
-	}
-	return nil
-}
-
-// IsValid checks whether msg is a valid message and returns an
-// InvalidMessageError if it is not.
-func (msg *Message) IsValid() error {
-	if msg.Flags & ^(FlagNoAutoStart|FlagNoReplyExpected) != 0 {
-		return InvalidMessageError("invalid flags")
-	}
-	if msg.Type == 0 || msg.Type >= typeMax {
-		return InvalidMessageError("invalid message type")
-	}
-	for k, v := range msg.Headers {
-		if k == 0 || k >= fieldMax {
-			return InvalidMessageError("invalid header")
-		}
-		if reflect.TypeOf(v.value) != fieldTypes[k] {
-			return InvalidMessageError("invalid type of header field")
-		}
-	}
-	for _, v := range requiredFields[msg.Type] {
-		if _, ok := msg.Headers[v]; !ok {
-			return InvalidMessageError("missing required header")
-		}
-	}
-	if path, ok := msg.Headers[FieldPath]; ok {
-		if !path.value.(ObjectPath).IsValid() {
-			return InvalidMessageError("invalid path name")
-		}
-	}
-	if iface, ok := msg.Headers[FieldInterface]; ok {
-		if !isValidInterface(iface.value.(string)) {
-			return InvalidMessageError("invalid interface name")
-		}
-	}
-	if member, ok := msg.Headers[FieldMember]; ok {
-		if !isValidMember(member.value.(string)) {
-			return InvalidMessageError("invalid member name")
-		}
-	}
-	if errname, ok := msg.Headers[FieldErrorName]; ok {
-		if !isValidInterface(errname.value.(string)) {
-			return InvalidMessageError("invalid error name")
-		}
-	}
-	if len(msg.Body) != 0 {
-		if _, ok := msg.Headers[FieldSignature]; !ok {
-			return InvalidMessageError("missing signature")
-		}
-	}
-	return nil
-}
-
-// Serial returns the message's serial number. The returned value is only valid
-// for messages received by eavesdropping.
-func (msg *Message) Serial() uint32 {
-	return msg.serial
-}
-
-// String returns a string representation of a message similar to the format of
-// dbus-monitor.
-func (msg *Message) String() string {
-	if err := msg.IsValid(); err != nil {
-		return "<invalid>"
-	}
-	s := msg.Type.String()
-	if v, ok := msg.Headers[FieldSender]; ok {
-		s += " from " + v.value.(string)
-	}
-	if v, ok := msg.Headers[FieldDestination]; ok {
-		s += " to " + v.value.(string)
-	}
-	s += " serial " + strconv.FormatUint(uint64(msg.serial), 10)
-	if v, ok := msg.Headers[FieldReplySerial]; ok {
-		s += " reply_serial " + strconv.FormatUint(uint64(v.value.(uint32)), 10)
-	}
-	if v, ok := msg.Headers[FieldUnixFDs]; ok {
-		s += " unixfds " + strconv.FormatUint(uint64(v.value.(uint32)), 10)
-	}
-	if v, ok := msg.Headers[FieldPath]; ok {
-		s += " path " + string(v.value.(ObjectPath))
-	}
-	if v, ok := msg.Headers[FieldInterface]; ok {
-		s += " interface " + v.value.(string)
-	}
-	if v, ok := msg.Headers[FieldErrorName]; ok {
-		s += " error " + v.value.(string)
-	}
-	if v, ok := msg.Headers[FieldMember]; ok {
-		s += " member " + v.value.(string)
-	}
-	if len(msg.Body) != 0 {
-		s += "\n"
-	}
-	for i, v := range msg.Body {
-		s += "  " + MakeVariant(v).String()
-		if i != len(msg.Body)-1 {
-			s += "\n"
-		}
-	}
-	return s
-}

vendor/src/github.com/godbus/dbus/object.go

@@ -1,136 +0,0 @@
-package dbus
-
-import (
-	"errors"
-	"strings"
-)
-
-// BusObject is the interface of a remote object on which methods can be
-// invoked.
-type BusObject interface {
-	Call(method string, flags Flags, args ...interface{}) *Call
-	Go(method string, flags Flags, ch chan *Call, args ...interface{}) *Call
-	GetProperty(p string) (Variant, error)
-	Destination() string
-	Path() ObjectPath
-}
-
-// Object represents a remote object on which methods can be invoked.
-type Object struct {
-	conn *Conn
-	dest string
-	path ObjectPath
-}
-
-// Call calls a method with (*Object).Go and waits for its reply.
-func (o *Object) Call(method string, flags Flags, args ...interface{}) *Call {
-	return <-o.Go(method, flags, make(chan *Call, 1), args...).Done
-}
-
-// AddMatchSignal subscribes BusObject to signals from specified interface and
-// method (member).
-func (o *Object) AddMatchSignal(iface, member string) *Call {
-	return o.Call(
-		"org.freedesktop.DBus.AddMatch",
-		0,
-		"type='signal',interface='"+iface+"',member='"+member+"'",
-	)
-}
-
-// Go calls a method with the given arguments asynchronously. It returns a
-// Call structure representing this method call. The passed channel will
-// return the same value once the call is done. If ch is nil, a new channel
-// will be allocated. Otherwise, ch has to be buffered or Go will panic.
-//
-// If the flags include FlagNoReplyExpected, ch is ignored and a Call structure
-// is returned of which only the Err member is valid.
-//
-// If the method parameter contains a dot ('.'), the part before the last dot
-// specifies the interface on which the method is called.
-func (o *Object) Go(method string, flags Flags, ch chan *Call, args ...interface{}) *Call {
-	iface := ""
-	i := strings.LastIndex(method, ".")
-	if i != -1 {
-		iface = method[:i]
-	}
-	method = method[i+1:]
-	msg := new(Message)
-	msg.Type = TypeMethodCall
-	msg.serial = o.conn.getSerial()
-	msg.Flags = flags & (FlagNoAutoStart | FlagNoReplyExpected)
-	msg.Headers = make(map[HeaderField]Variant)
-	msg.Headers[FieldPath] = MakeVariant(o.path)
-	msg.Headers[FieldDestination] = MakeVariant(o.dest)
-	msg.Headers[FieldMember] = MakeVariant(method)
-	if iface != "" {
-		msg.Headers[FieldInterface] = MakeVariant(iface)
-	}
-	msg.Body = args
-	if len(args) > 0 {
-		msg.Headers[FieldSignature] = MakeVariant(SignatureOf(args...))
-	}
-	if msg.Flags&FlagNoReplyExpected == 0 {
-		if ch == nil {
-			ch = make(chan *Call, 10)
-		} else if cap(ch) == 0 {
-			panic("dbus: unbuffered channel passed to (*Object).Go")
-		}
-		call := &Call{
-			Destination: o.dest,
-			Path:        o.path,
-			Method:      method,
-			Args:        args,
-			Done:        ch,
-		}
-		o.conn.callsLck.Lock()
-		o.conn.calls[msg.serial] = call
-		o.conn.callsLck.Unlock()
-		o.conn.outLck.RLock()
-		if o.conn.closed {
-			call.Err = ErrClosed
-			call.Done <- call
-		} else {
-			o.conn.out <- msg
-		}
-		o.conn.outLck.RUnlock()
-		return call
-	}
-	o.conn.outLck.RLock()
-	defer o.conn.outLck.RUnlock()
-	if o.conn.closed {
-		return &Call{Err: ErrClosed}
-	}
-	o.conn.out <- msg
-	return &Call{Err: nil}
-}
-
-// GetProperty calls org.freedesktop.DBus.Properties.GetProperty on the given
-// object. The property name must be given in interface.member notation.
-func (o *Object) GetProperty(p string) (Variant, error) {
-	idx := strings.LastIndex(p, ".")
-	if idx == -1 || idx+1 == len(p) {
-		return Variant{}, errors.New("dbus: invalid property " + p)
-	}
-
-	iface := p[:idx]
-	prop := p[idx+1:]
-
-	result := Variant{}
-	err := o.Call("org.freedesktop.DBus.Properties.Get", 0, iface, prop).Store(&result)
-
-	if err != nil {
-		return Variant{}, err
-	}
-
-	return result, nil
-}
-
-// Destination returns the destination that calls on o are sent to.
-func (o *Object) Destination() string {
-	return o.dest
-}
-
-// Path returns the path that calls on o are sent to.
-func (o *Object) Path() ObjectPath {
-	return o.path
-}

vendor/src/github.com/godbus/dbus/sig.go

@@ -1,257 +0,0 @@
-package dbus
-
-import (
-	"fmt"
-	"reflect"
-	"strings"
-)
-
-var sigToType = map[byte]reflect.Type{
-	'y': byteType,
-	'b': boolType,
-	'n': int16Type,
-	'q': uint16Type,
-	'i': int32Type,
-	'u': uint32Type,
-	'x': int64Type,
-	't': uint64Type,
-	'd': float64Type,
-	's': stringType,
-	'g': signatureType,
-	'o': objectPathType,
-	'v': variantType,
-	'h': unixFDIndexType,
-}
-
-// Signature represents a correct type signature as specified by the D-Bus
-// specification. The zero value represents the empty signature, "".
-type Signature struct {
-	str string
-}
-
-// SignatureOf returns the concatenation of all the signatures of the given
-// values. It panics if one of them is not representable in D-Bus.
-func SignatureOf(vs ...interface{}) Signature {
-	var s string
-	for _, v := range vs {
-		s += getSignature(reflect.TypeOf(v))
-	}
-	return Signature{s}
-}
-
-// SignatureOfType returns the signature of the given type. It panics if the
-// type is not representable in D-Bus.
-func SignatureOfType(t reflect.Type) Signature {
-	return Signature{getSignature(t)}
-}
-
-// getSignature returns the signature of the given type and panics on unknown types.
-func getSignature(t reflect.Type) string {
-	// handle simple types first
-	switch t.Kind() {
-	case reflect.Uint8:
-		return "y"
-	case reflect.Bool:
-		return "b"
-	case reflect.Int16:
-		return "n"
-	case reflect.Uint16:
-		return "q"
-	case reflect.Int32:
-		if t == unixFDType {
-			return "h"
-		}
-		return "i"
-	case reflect.Uint32:
-		if t == unixFDIndexType {
-			return "h"
-		}
-		return "u"
-	case reflect.Int64:
-		return "x"
-	case reflect.Uint64:
-		return "t"
-	case reflect.Float64:
-		return "d"
-	case reflect.Ptr:
-		return getSignature(t.Elem())
-	case reflect.String:
-		if t == objectPathType {
-			return "o"
-		}
-		return "s"
-	case reflect.Struct:
-		if t == variantType {
-			return "v"
-		} else if t == signatureType {
-			return "g"
-		}
-		var s string
-		for i := 0; i < t.NumField(); i++ {
-			field := t.Field(i)
-			if field.PkgPath == "" && field.Tag.Get("dbus") != "-" {
-				s += getSignature(t.Field(i).Type)
-			}
-		}
-		return "(" + s + ")"
-	case reflect.Array, reflect.Slice:
-		return "a" + getSignature(t.Elem())
-	case reflect.Map:
-		if !isKeyType(t.Key()) {
-			panic(InvalidTypeError{t})
-		}
-		return "a{" + getSignature(t.Key()) + getSignature(t.Elem()) + "}"
-	}
-	panic(InvalidTypeError{t})
-}
-
-// ParseSignature returns the signature represented by this string, or a
-// SignatureError if the string is not a valid signature.
-func ParseSignature(s string) (sig Signature, err error) {
-	if len(s) == 0 {
-		return
-	}
-	if len(s) > 255 {
-		return Signature{""}, SignatureError{s, "too long"}
-	}
-	sig.str = s
-	for err == nil && len(s) != 0 {
-		err, s = validSingle(s, 0)
-	}
-	if err != nil {
-		sig = Signature{""}
-	}
-
-	return
-}
-
-// ParseSignatureMust behaves like ParseSignature, except that it panics if s
-// is not valid.
-func ParseSignatureMust(s string) Signature {
-	sig, err := ParseSignature(s)
-	if err != nil {
-		panic(err)
-	}
-	return sig
-}
-
-// Empty retruns whether the signature is the empty signature.
-func (s Signature) Empty() bool {
-	return s.str == ""
-}
-
-// Single returns whether the signature represents a single, complete type.
-func (s Signature) Single() bool {
-	err, r := validSingle(s.str, 0)
-	return err != nil && r == ""
-}
-
-// String returns the signature's string representation.
-func (s Signature) String() string {
-	return s.str
-}
-
-// A SignatureError indicates that a signature passed to a function or received
-// on a connection is not a valid signature.
-type SignatureError struct {
-	Sig    string
-	Reason string
-}
-
-func (e SignatureError) Error() string {
-	return fmt.Sprintf("dbus: invalid signature: %q (%s)", e.Sig, e.Reason)
-}
-
-// Try to read a single type from this string. If it was successfull, err is nil
-// and rem is the remaining unparsed part. Otherwise, err is a non-nil
-// SignatureError and rem is "". depth is the current recursion depth which may
-// not be greater than 64 and should be given as 0 on the first call.
-func validSingle(s string, depth int) (err error, rem string) {
-	if s == "" {
-		return SignatureError{Sig: s, Reason: "empty signature"}, ""
-	}
-	if depth > 64 {
-		return SignatureError{Sig: s, Reason: "container nesting too deep"}, ""
-	}
-	switch s[0] {
-	case 'y', 'b', 'n', 'q', 'i', 'u', 'x', 't', 'd', 's', 'g', 'o', 'v', 'h':
-		return nil, s[1:]
-	case 'a':
-		if len(s) > 1 && s[1] == '{' {
-			i := findMatching(s[1:], '{', '}')
-			if i == -1 {
-				return SignatureError{Sig: s, Reason: "unmatched '{'"}, ""
-			}
-			i++
-			rem = s[i+1:]
-			s = s[2:i]
-			if err, _ = validSingle(s[:1], depth+1); err != nil {
-				return err, ""
-			}
-			err, nr := validSingle(s[1:], depth+1)
-			if err != nil {
-				return err, ""
-			}
-			if nr != "" {
-				return SignatureError{Sig: s, Reason: "too many types in dict"}, ""
-			}
-			return nil, rem
-		}
-		return validSingle(s[1:], depth+1)
-	case '(':
-		i := findMatching(s, '(', ')')
-		if i == -1 {
-			return SignatureError{Sig: s, Reason: "unmatched ')'"}, ""
-		}
-		rem = s[i+1:]
-		s = s[1:i]
-		for err == nil && s != "" {
-			err, s = validSingle(s, depth+1)
-		}
-		if err != nil {
-			rem = ""
-		}
-		return
-	}
-	return SignatureError{Sig: s, Reason: "invalid type character"}, ""
-}
-
-func findMatching(s string, left, right rune) int {
-	n := 0
-	for i, v := range s {
-		if v == left {
-			n++
-		} else if v == right {
-			n--
-		}
-		if n == 0 {
-			return i
-		}
-	}
-	return -1
-}
-
-// typeFor returns the type of the given signature. It ignores any left over
-// characters and panics if s doesn't start with a valid type signature.
-func typeFor(s string) (t reflect.Type) {
-	err, _ := validSingle(s, 0)
-	if err != nil {
-		panic(err)
-	}
-
-	if t, ok := sigToType[s[0]]; ok {
-		return t
-	}
-	switch s[0] {
-	case 'a':
-		if s[1] == '{' {
-			i := strings.LastIndex(s, "}")
-			t = reflect.MapOf(sigToType[s[2]], typeFor(s[3:i]))
-		} else {
-			t = reflect.SliceOf(typeFor(s[1:]))
-		}
-	case '(':
-		t = interfacesType
-	}
-	return
-}

vendor/src/github.com/godbus/dbus/transport_darwin.go

@@ -1,6 +0,0 @@
-package dbus
-
-func (t *unixTransport) SendNullByte() error {
-	_, err := t.Write([]byte{0})
-	return err
-}

vendor/src/github.com/godbus/dbus/transport_generic.go

@@ -1,35 +0,0 @@
-package dbus
-
-import (
-	"encoding/binary"
-	"errors"
-	"io"
-)
-
-type genericTransport struct {
-	io.ReadWriteCloser
-}
-
-func (t genericTransport) SendNullByte() error {
-	_, err := t.Write([]byte{0})
-	return err
-}
-
-func (t genericTransport) SupportsUnixFDs() bool {
-	return false
-}
-
-func (t genericTransport) EnableUnixFDs() {}
-
-func (t genericTransport) ReadMessage() (*Message, error) {
-	return DecodeMessage(t)
-}
-
-func (t genericTransport) SendMessage(msg *Message) error {
-	for _, v := range msg.Body {
-		if _, ok := v.(UnixFD); ok {
-			return errors.New("dbus: unix fd passing not enabled")
-		}
-	}
-	return msg.EncodeTo(t, binary.LittleEndian)
-}

vendor/src/github.com/godbus/dbus/transport_unix.go

@@ -1,196 +0,0 @@
-//+build !windows,!solaris
-
-package dbus
-
-import (
-	"bytes"
-	"encoding/binary"
-	"errors"
-	"io"
-	"net"
-	"syscall"
-)
-
-type oobReader struct {
-	conn *net.UnixConn
-	oob  []byte
-	buf  [4096]byte
-}
-
-func (o *oobReader) Read(b []byte) (n int, err error) {
-	n, oobn, flags, _, err := o.conn.ReadMsgUnix(b, o.buf[:])
-	if err != nil {
-		return n, err
-	}
-	if flags&syscall.MSG_CTRUNC != 0 {
-		return n, errors.New("dbus: control data truncated (too many fds received)")
-	}
-	o.oob = append(o.oob, o.buf[:oobn]...)
-	return n, nil
-}
-
-type unixTransport struct {
-	*net.UnixConn
-	hasUnixFDs bool
-}
-
-func newUnixTransport(keys string) (transport, error) {
-	var err error
-
-	t := new(unixTransport)
-	abstract := getKey(keys, "abstract")
-	path := getKey(keys, "path")
-	switch {
-	case abstract == "" && path == "":
-		return nil, errors.New("dbus: invalid address (neither path nor abstract set)")
-	case abstract != "" && path == "":
-		t.UnixConn, err = net.DialUnix("unix", nil, &net.UnixAddr{Name: "@" + abstract, Net: "unix"})
-		if err != nil {
-			return nil, err
-		}
-		return t, nil
-	case abstract == "" && path != "":
-		t.UnixConn, err = net.DialUnix("unix", nil, &net.UnixAddr{Name: path, Net: "unix"})
-		if err != nil {
-			return nil, err
-		}
-		return t, nil
-	default:
-		return nil, errors.New("dbus: invalid address (both path and abstract set)")
-	}
-}
-
-func init() {
-	transports["unix"] = newUnixTransport
-}
-
-func (t *unixTransport) EnableUnixFDs() {
-	t.hasUnixFDs = true
-}
-
-func (t *unixTransport) ReadMessage() (*Message, error) {
-	var (
-		blen, hlen uint32
-		csheader   [16]byte
-		headers    []header
-		order      binary.ByteOrder
-		unixfds    uint32
-	)
-	// To be sure that all bytes of out-of-band data are read, we use a special
-	// reader that uses ReadUnix on the underlying connection instead of Read
-	// and gathers the out-of-band data in a buffer.
-	rd := &oobReader{conn: t.UnixConn}
-	// read the first 16 bytes (the part of the header that has a constant size),
-	// from which we can figure out the length of the rest of the message
-	if _, err := io.ReadFull(rd, csheader[:]); err != nil {
-		return nil, err
-	}
-	switch csheader[0] {
-	case 'l':
-		order = binary.LittleEndian
-	case 'B':
-		order = binary.BigEndian
-	default:
-		return nil, InvalidMessageError("invalid byte order")
-	}
-	// csheader[4:8] -> length of message body, csheader[12:16] -> length of
-	// header fields (without alignment)
-	binary.Read(bytes.NewBuffer(csheader[4:8]), order, &blen)
-	binary.Read(bytes.NewBuffer(csheader[12:]), order, &hlen)
-	if hlen%8 != 0 {
-		hlen += 8 - (hlen % 8)
-	}
-
-	// decode headers and look for unix fds
-	headerdata := make([]byte, hlen+4)
-	copy(headerdata, csheader[12:])
-	if _, err := io.ReadFull(t, headerdata[4:]); err != nil {
-		return nil, err
-	}
-	dec := newDecoder(bytes.NewBuffer(headerdata), order)
-	dec.pos = 12
-	vs, err := dec.Decode(Signature{"a(yv)"})
-	if err != nil {
-		return nil, err
-	}
-	Store(vs, &headers)
-	for _, v := range headers {
-		if v.Field == byte(FieldUnixFDs) {
-			unixfds, _ = v.Variant.value.(uint32)
-		}
-	}
-	all := make([]byte, 16+hlen+blen)
-	copy(all, csheader[:])
-	copy(all[16:], headerdata[4:])
-	if _, err := io.ReadFull(rd, all[16+hlen:]); err != nil {
-		return nil, err
-	}
-	if unixfds != 0 {
-		if !t.hasUnixFDs {
-			return nil, errors.New("dbus: got unix fds on unsupported transport")
-		}
-		// read the fds from the OOB data
-		scms, err := syscall.ParseSocketControlMessage(rd.oob)
-		if err != nil {
-			return nil, err
-		}
-		if len(scms) != 1 {
-			return nil, errors.New("dbus: received more than one socket control message")
-		}
-		fds, err := syscall.ParseUnixRights(&scms[0])
-		if err != nil {
-			return nil, err
-		}
-		msg, err := DecodeMessage(bytes.NewBuffer(all))
-		if err != nil {
-			return nil, err
-		}
-		// substitute the values in the message body (which are indices for the
-		// array receiver via OOB) with the actual values
-		for i, v := range msg.Body {
-			if j, ok := v.(UnixFDIndex); ok {
-				if uint32(j) >= unixfds {
-					return nil, InvalidMessageError("invalid index for unix fd")
-				}
-				msg.Body[i] = UnixFD(fds[j])
-			}
-		}
-		return msg, nil
-	}
-	return DecodeMessage(bytes.NewBuffer(all))
-}
-
-func (t *unixTransport) SendMessage(msg *Message) error {
-	fds := make([]int, 0)
-	for i, v := range msg.Body {
-		if fd, ok := v.(UnixFD); ok {
-			msg.Body[i] = UnixFDIndex(len(fds))
-			fds = append(fds, int(fd))
-		}
-	}
-	if len(fds) != 0 {
-		if !t.hasUnixFDs {
-			return errors.New("dbus: unix fd passing not enabled")
-		}
-		msg.Headers[FieldUnixFDs] = MakeVariant(uint32(len(fds)))
-		oob := syscall.UnixRights(fds...)
-		buf := new(bytes.Buffer)
-		msg.EncodeTo(buf, binary.LittleEndian)
-		n, oobn, err := t.UnixConn.WriteMsgUnix(buf.Bytes(), oob, nil)
-		if err != nil {
-			return err
-		}
-		if n != buf.Len() || oobn != len(oob) {
-			return io.ErrShortWrite
-		}
-	} else {
-		if err := msg.EncodeTo(t, binary.LittleEndian); err != nil {
-			return nil
-		}
-	}
-	return nil
-}
-
-func (t *unixTransport) SupportsUnixFDs() bool {
-	return true
-}

vendor/src/github.com/godbus/dbus/transport_unixcred_dragonfly.go

@@ -1,95 +0,0 @@
-// The UnixCredentials system call is currently only implemented on Linux
-// http://golang.org/src/pkg/syscall/sockcmsg_linux.go
-// https://golang.org/s/go1.4-syscall
-// http://code.google.com/p/go/source/browse/unix/sockcmsg_linux.go?repo=sys
-
-// Local implementation of the UnixCredentials system call for DragonFly BSD
-
-package dbus
-
-/*
-#include <sys/ucred.h>
-*/
-import "C"
-
-import (
-	"io"
-	"os"
-	"syscall"
-	"unsafe"
-)
-
-// http://golang.org/src/pkg/syscall/ztypes_linux_amd64.go
-// http://golang.org/src/pkg/syscall/ztypes_dragonfly_amd64.go
-type Ucred struct {
-	Pid int32
-	Uid uint32
-	Gid uint32
-}
-
-// http://golang.org/src/pkg/syscall/types_linux.go
-// http://golang.org/src/pkg/syscall/types_dragonfly.go
-// https://github.com/DragonFlyBSD/DragonFlyBSD/blob/master/sys/sys/ucred.h
-const (
-	SizeofUcred = C.sizeof_struct_ucred
-)
-
-// http://golang.org/src/pkg/syscall/sockcmsg_unix.go
-func cmsgAlignOf(salen int) int {
-	// From http://golang.org/src/pkg/syscall/sockcmsg_unix.go
-	//salign := sizeofPtr
-	// NOTE: It seems like 64-bit Darwin and DragonFly BSD kernels
-	// still require 32-bit aligned access to network subsystem.
-	//if darwin64Bit || dragonfly64Bit {
-	//	salign = 4
-	//}
-	salign := 4
-	return (salen + salign - 1) & ^(salign - 1)
-}
-
-// http://golang.org/src/pkg/syscall/sockcmsg_unix.go
-func cmsgData(h *syscall.Cmsghdr) unsafe.Pointer {
-	return unsafe.Pointer(uintptr(unsafe.Pointer(h)) + uintptr(cmsgAlignOf(syscall.SizeofCmsghdr)))
-}
-
-// http://golang.org/src/pkg/syscall/sockcmsg_linux.go
-// UnixCredentials encodes credentials into a socket control message
-// for sending to another process. This can be used for
-// authentication.
-func UnixCredentials(ucred *Ucred) []byte {
-	b := make([]byte, syscall.CmsgSpace(SizeofUcred))
-	h := (*syscall.Cmsghdr)(unsafe.Pointer(&b[0]))
-	h.Level = syscall.SOL_SOCKET
-	h.Type = syscall.SCM_CREDS
-	h.SetLen(syscall.CmsgLen(SizeofUcred))
-	*((*Ucred)(cmsgData(h))) = *ucred
-	return b
-}
-
-// http://golang.org/src/pkg/syscall/sockcmsg_linux.go
-// ParseUnixCredentials decodes a socket control message that contains
-// credentials in a Ucred structure. To receive such a message, the
-// SO_PASSCRED option must be enabled on the socket.
-func ParseUnixCredentials(m *syscall.SocketControlMessage) (*Ucred, error) {
-	if m.Header.Level != syscall.SOL_SOCKET {
-		return nil, syscall.EINVAL
-	}
-	if m.Header.Type != syscall.SCM_CREDS {
-		return nil, syscall.EINVAL
-	}
-	ucred := *(*Ucred)(unsafe.Pointer(&m.Data[0]))
-	return &ucred, nil
-}
-
-func (t *unixTransport) SendNullByte() error {
-	ucred := &Ucred{Pid: int32(os.Getpid()), Uid: uint32(os.Getuid()), Gid: uint32(os.Getgid())}
-	b := UnixCredentials(ucred)
-	_, oobn, err := t.UnixConn.WriteMsgUnix([]byte{0}, b, nil)
-	if err != nil {
-		return err
-	}
-	if oobn != len(b) {
-		return io.ErrShortWrite
-	}
-	return nil
-}

vendor/src/github.com/godbus/dbus/transport_unixcred_linux.go

@@ -1,25 +0,0 @@
-// The UnixCredentials system call is currently only implemented on Linux
-// http://golang.org/src/pkg/syscall/sockcmsg_linux.go
-// https://golang.org/s/go1.4-syscall
-// http://code.google.com/p/go/source/browse/unix/sockcmsg_linux.go?repo=sys
-
-package dbus
-
-import (
-	"io"
-	"os"
-	"syscall"
-)
-
-func (t *unixTransport) SendNullByte() error {
-	ucred := &syscall.Ucred{Pid: int32(os.Getpid()), Uid: uint32(os.Getuid()), Gid: uint32(os.Getgid())}
-	b := syscall.UnixCredentials(ucred)
-	_, oobn, err := t.UnixConn.WriteMsgUnix([]byte{0}, b, nil)
-	if err != nil {
-		return err
-	}
-	if oobn != len(b) {
-		return io.ErrShortWrite
-	}
-	return nil
-}

vendor/src/github.com/godbus/dbus/variant.go

@@ -1,139 +0,0 @@
-package dbus
-
-import (
-	"bytes"
-	"fmt"
-	"reflect"
-	"sort"
-	"strconv"
-)
-
-// Variant represents the D-Bus variant type.
-type Variant struct {
-	sig   Signature
-	value interface{}
-}
-
-// MakeVariant converts the given value to a Variant. It panics if v cannot be
-// represented as a D-Bus type.
-func MakeVariant(v interface{}) Variant {
-	return Variant{SignatureOf(v), v}
-}
-
-// ParseVariant parses the given string as a variant as described at
-// https://developer.gnome.org/glib/unstable/gvariant-text.html. If sig is not
-// empty, it is taken to be the expected signature for the variant.
-func ParseVariant(s string, sig Signature) (Variant, error) {
-	tokens := varLex(s)
-	p := &varParser{tokens: tokens}
-	n, err := varMakeNode(p)
-	if err != nil {
-		return Variant{}, err
-	}
-	if sig.str == "" {
-		sig, err = varInfer(n)
-		if err != nil {
-			return Variant{}, err
-		}
-	}
-	v, err := n.Value(sig)
-	if err != nil {
-		return Variant{}, err
-	}
-	return MakeVariant(v), nil
-}
-
-// format returns a formatted version of v and whether this string can be parsed
-// unambigously.
-func (v Variant) format() (string, bool) {
-	switch v.sig.str[0] {
-	case 'b', 'i':
-		return fmt.Sprint(v.value), true
-	case 'n', 'q', 'u', 'x', 't', 'd', 'h':
-		return fmt.Sprint(v.value), false
-	case 's':
-		return strconv.Quote(v.value.(string)), true
-	case 'o':
-		return strconv.Quote(string(v.value.(ObjectPath))), false
-	case 'g':
-		return strconv.Quote(v.value.(Signature).str), false
-	case 'v':
-		s, unamb := v.value.(Variant).format()
-		if !unamb {
-			return "<@" + v.value.(Variant).sig.str + " " + s + ">", true
-		}
-		return "<" + s + ">", true
-	case 'y':
-		return fmt.Sprintf("%#x", v.value.(byte)), false
-	}
-	rv := reflect.ValueOf(v.value)
-	switch rv.Kind() {
-	case reflect.Slice:
-		if rv.Len() == 0 {
-			return "[]", false
-		}
-		unamb := true
-		buf := bytes.NewBuffer([]byte("["))
-		for i := 0; i < rv.Len(); i++ {
-			// TODO: slooow
-			s, b := MakeVariant(rv.Index(i).Interface()).format()
-			unamb = unamb && b
-			buf.WriteString(s)
-			if i != rv.Len()-1 {
-				buf.WriteString(", ")
-			}
-		}
-		buf.WriteByte(']')
-		return buf.String(), unamb
-	case reflect.Map:
-		if rv.Len() == 0 {
-			return "{}", false
-		}
-		unamb := true
-		var buf bytes.Buffer
-		kvs := make([]string, rv.Len())
-		for i, k := range rv.MapKeys() {
-			s, b := MakeVariant(k.Interface()).format()
-			unamb = unamb && b
-			buf.Reset()
-			buf.WriteString(s)
-			buf.WriteString(": ")
-			s, b = MakeVariant(rv.MapIndex(k).Interface()).format()
-			unamb = unamb && b
-			buf.WriteString(s)
-			kvs[i] = buf.String()
-		}
-		buf.Reset()
-		buf.WriteByte('{')
-		sort.Strings(kvs)
-		for i, kv := range kvs {
-			if i > 0 {
-				buf.WriteString(", ")
-			}
-			buf.WriteString(kv)
-		}
-		buf.WriteByte('}')
-		return buf.String(), unamb
-	}
-	return `"INVALID"`, true
-}
-
-// Signature returns the D-Bus signature of the underlying value of v.
-func (v Variant) Signature() Signature {
-	return v.sig
-}
-
-// String returns the string representation of the underlying value of v as
-// described at https://developer.gnome.org/glib/unstable/gvariant-text.html.
-func (v Variant) String() string {
-	s, unamb := v.format()
-	if !unamb {
-		return "@" + v.sig.str + " " + s
-	}
-	return s
-}
-
-// Value returns the underlying value of v.
-func (v Variant) Value() interface{} {
-	return v.value
-}

vendor/src/github.com/godbus/dbus/variant_lexer.go

@@ -1,284 +0,0 @@
-package dbus
-
-import (
-	"fmt"
-	"strings"
-	"unicode"
-	"unicode/utf8"
-)
-
-// Heavily inspired by the lexer from text/template.
-
-type varToken struct {
-	typ varTokenType
-	val string
-}
-
-type varTokenType byte
-
-const (
-	tokEOF varTokenType = iota
-	tokError
-	tokNumber
-	tokString
-	tokBool
-	tokArrayStart
-	tokArrayEnd
-	tokDictStart
-	tokDictEnd
-	tokVariantStart
-	tokVariantEnd
-	tokComma
-	tokColon
-	tokType
-	tokByteString
-)
-
-type varLexer struct {
-	input  string
-	start  int
-	pos    int
-	width  int
-	tokens []varToken
-}
-
-type lexState func(*varLexer) lexState
-
-func varLex(s string) []varToken {
-	l := &varLexer{input: s}
-	l.run()
-	return l.tokens
-}
-
-func (l *varLexer) accept(valid string) bool {
-	if strings.IndexRune(valid, l.next()) >= 0 {
-		return true
-	}
-	l.backup()
-	return false
-}
-
-func (l *varLexer) backup() {
-	l.pos -= l.width
-}
-
-func (l *varLexer) emit(t varTokenType) {
-	l.tokens = append(l.tokens, varToken{t, l.input[l.start:l.pos]})
-	l.start = l.pos
-}
-
-func (l *varLexer) errorf(format string, v ...interface{}) lexState {
-	l.tokens = append(l.tokens, varToken{
-		tokError,
-		fmt.Sprintf(format, v...),
-	})
-	return nil
-}
-
-func (l *varLexer) ignore() {
-	l.start = l.pos
-}
-
-func (l *varLexer) next() rune {
-	var r rune
-
-	if l.pos >= len(l.input) {
-		l.width = 0
-		return -1
-	}
-	r, l.width = utf8.DecodeRuneInString(l.input[l.pos:])
-	l.pos += l.width
-	return r
-}
-
-func (l *varLexer) run() {
-	for state := varLexNormal; state != nil; {
-		state = state(l)
-	}
-}
-
-func (l *varLexer) peek() rune {
-	r := l.next()
-	l.backup()
-	return r
-}
-
-func varLexNormal(l *varLexer) lexState {
-	for {
-		r := l.next()
-		switch {
-		case r == -1:
-			l.emit(tokEOF)
-			return nil
-		case r == '[':
-			l.emit(tokArrayStart)
-		case r == ']':
-			l.emit(tokArrayEnd)
-		case r == '{':
-			l.emit(tokDictStart)
-		case r == '}':
-			l.emit(tokDictEnd)
-		case r == '<':
-			l.emit(tokVariantStart)
-		case r == '>':
-			l.emit(tokVariantEnd)
-		case r == ':':
-			l.emit(tokColon)
-		case r == ',':
-			l.emit(tokComma)
-		case r == '\'' || r == '"':
-			l.backup()
-			return varLexString
-		case r == '@':
-			l.backup()
-			return varLexType
-		case unicode.IsSpace(r):
-			l.ignore()
-		case unicode.IsNumber(r) || r == '+' || r == '-':
-			l.backup()
-			return varLexNumber
-		case r == 'b':
-			pos := l.start
-			if n := l.peek(); n == '"' || n == '\'' {
-				return varLexByteString
-			}
-			// not a byte string; try to parse it as a type or bool below
-			l.pos = pos + 1
-			l.width = 1
-			fallthrough
-		default:
-			// either a bool or a type. Try bools first.
-			l.backup()
-			if l.pos+4 <= len(l.input) {
-				if l.input[l.pos:l.pos+4] == "true" {
-					l.pos += 4
-					l.emit(tokBool)
-					continue
-				}
-			}
-			if l.pos+5 <= len(l.input) {
-				if l.input[l.pos:l.pos+5] == "false" {
-					l.pos += 5
-					l.emit(tokBool)
-					continue
-				}
-			}
-			// must be a type.
-			return varLexType
-		}
-	}
-}
-
-var varTypeMap = map[string]string{
-	"boolean":    "b",
-	"byte":       "y",
-	"int16":      "n",
-	"uint16":     "q",
-	"int32":      "i",
-	"uint32":     "u",
-	"int64":      "x",
-	"uint64":     "t",
-	"double":     "f",
-	"string":     "s",
-	"objectpath": "o",
-	"signature":  "g",
-}
-
-func varLexByteString(l *varLexer) lexState {
-	q := l.next()
-Loop:
-	for {
-		switch l.next() {
-		case '\\':
-			if r := l.next(); r != -1 {
-				break
-			}
-			fallthrough
-		case -1:
-			return l.errorf("unterminated bytestring")
-		case q:
-			break Loop
-		}
-	}
-	l.emit(tokByteString)
-	return varLexNormal
-}
-
-func varLexNumber(l *varLexer) lexState {
-	l.accept("+-")
-	digits := "0123456789"
-	if l.accept("0") {
-		if l.accept("x") {
-			digits = "0123456789abcdefABCDEF"
-		} else {
-			digits = "01234567"
-		}
-	}
-	for strings.IndexRune(digits, l.next()) >= 0 {
-	}
-	l.backup()
-	if l.accept(".") {
-		for strings.IndexRune(digits, l.next()) >= 0 {
-		}
-		l.backup()
-	}
-	if l.accept("eE") {
-		l.accept("+-")
-		for strings.IndexRune("0123456789", l.next()) >= 0 {
-		}
-		l.backup()
-	}
-	if r := l.peek(); unicode.IsLetter(r) {
-		l.next()
-		return l.errorf("bad number syntax: %q", l.input[l.start:l.pos])
-	}
-	l.emit(tokNumber)
-	return varLexNormal
-}
-
-func varLexString(l *varLexer) lexState {
-	q := l.next()
-Loop:
-	for {
-		switch l.next() {
-		case '\\':
-			if r := l.next(); r != -1 {
-				break
-			}
-			fallthrough
-		case -1:
-			return l.errorf("unterminated string")
-		case q:
-			break Loop
-		}
-	}
-	l.emit(tokString)
-	return varLexNormal
-}
-
-func varLexType(l *varLexer) lexState {
-	at := l.accept("@")
-	for {
-		r := l.next()
-		if r == -1 {
-			break
-		}
-		if unicode.IsSpace(r) {
-			l.backup()
-			break
-		}
-	}
-	if at {
-		if _, err := ParseSignature(l.input[l.start+1 : l.pos]); err != nil {
-			return l.errorf("%s", err)
-		}
-	} else {
-		if _, ok := varTypeMap[l.input[l.start:l.pos]]; ok {
-			l.emit(tokType)
-			return varLexNormal
-		}
-		return l.errorf("unrecognized type %q", l.input[l.start:l.pos])
-	}
-	l.emit(tokType)
-	return varLexNormal
-}

vendor/src/github.com/godbus/dbus/variant_parser.go

@@ -1,817 +0,0 @@
-package dbus
-
-import (
-	"bytes"
-	"errors"
-	"fmt"
-	"io"
-	"reflect"
-	"strconv"
-	"strings"
-	"unicode/utf8"
-)
-
-type varParser struct {
-	tokens []varToken
-	i      int
-}
-
-func (p *varParser) backup() {
-	p.i--
-}
-
-func (p *varParser) next() varToken {
-	if p.i < len(p.tokens) {
-		t := p.tokens[p.i]
-		p.i++
-		return t
-	}
-	return varToken{typ: tokEOF}
-}
-
-type varNode interface {
-	Infer() (Signature, error)
-	String() string
-	Sigs() sigSet
-	Value(Signature) (interface{}, error)
-}
-
-func varMakeNode(p *varParser) (varNode, error) {
-	var sig Signature
-
-	for {
-		t := p.next()
-		switch t.typ {
-		case tokEOF:
-			return nil, io.ErrUnexpectedEOF
-		case tokError:
-			return nil, errors.New(t.val)
-		case tokNumber:
-			return varMakeNumNode(t, sig)
-		case tokString:
-			return varMakeStringNode(t, sig)
-		case tokBool:
-			if sig.str != "" && sig.str != "b" {
-				return nil, varTypeError{t.val, sig}
-			}
-			b, err := strconv.ParseBool(t.val)
-			if err != nil {
-				return nil, err
-			}
-			return boolNode(b), nil
-		case tokArrayStart:
-			return varMakeArrayNode(p, sig)
-		case tokVariantStart:
-			return varMakeVariantNode(p, sig)
-		case tokDictStart:
-			return varMakeDictNode(p, sig)
-		case tokType:
-			if sig.str != "" {
-				return nil, errors.New("unexpected type annotation")
-			}
-			if t.val[0] == '@' {
-				sig.str = t.val[1:]
-			} else {
-				sig.str = varTypeMap[t.val]
-			}
-		case tokByteString:
-			if sig.str != "" && sig.str != "ay" {
-				return nil, varTypeError{t.val, sig}
-			}
-			b, err := varParseByteString(t.val)
-			if err != nil {
-				return nil, err
-			}
-			return byteStringNode(b), nil
-		default:
-			return nil, fmt.Errorf("unexpected %q", t.val)
-		}
-	}
-}
-
-type varTypeError struct {
-	val string
-	sig Signature
-}
-
-func (e varTypeError) Error() string {
-	return fmt.Sprintf("dbus: can't parse %q as type %q", e.val, e.sig.str)
-}
-
-type sigSet map[Signature]bool
-
-func (s sigSet) Empty() bool {
-	return len(s) == 0
-}
-
-func (s sigSet) Intersect(s2 sigSet) sigSet {
-	r := make(sigSet)
-	for k := range s {
-		if s2[k] {
-			r[k] = true
-		}
-	}
-	return r
-}
-
-func (s sigSet) Single() (Signature, bool) {
-	if len(s) == 1 {
-		for k := range s {
-			return k, true
-		}
-	}
-	return Signature{}, false
-}
-
-func (s sigSet) ToArray() sigSet {
-	r := make(sigSet, len(s))
-	for k := range s {
-		r[Signature{"a" + k.str}] = true
-	}
-	return r
-}
-
-type numNode struct {
-	sig Signature
-	str string
-	val interface{}
-}
-
-var numSigSet = sigSet{
-	Signature{"y"}: true,
-	Signature{"n"}: true,
-	Signature{"q"}: true,
-	Signature{"i"}: true,
-	Signature{"u"}: true,
-	Signature{"x"}: true,
-	Signature{"t"}: true,
-	Signature{"d"}: true,
-}
-
-func (n numNode) Infer() (Signature, error) {
-	if strings.ContainsAny(n.str, ".e") {
-		return Signature{"d"}, nil
-	}
-	return Signature{"i"}, nil
-}
-
-func (n numNode) String() string {
-	return n.str
-}
-
-func (n numNode) Sigs() sigSet {
-	if n.sig.str != "" {
-		return sigSet{n.sig: true}
-	}
-	if strings.ContainsAny(n.str, ".e") {
-		return sigSet{Signature{"d"}: true}
-	}
-	return numSigSet
-}
-
-func (n numNode) Value(sig Signature) (interface{}, error) {
-	if n.sig.str != "" && n.sig != sig {
-		return nil, varTypeError{n.str, sig}
-	}
-	if n.val != nil {
-		return n.val, nil
-	}
-	return varNumAs(n.str, sig)
-}
-
-func varMakeNumNode(tok varToken, sig Signature) (varNode, error) {
-	if sig.str == "" {
-		return numNode{str: tok.val}, nil
-	}
-	num, err := varNumAs(tok.val, sig)
-	if err != nil {
-		return nil, err
-	}
-	return numNode{sig: sig, val: num}, nil
-}
-
-func varNumAs(s string, sig Signature) (interface{}, error) {
-	isUnsigned := false
-	size := 32
-	switch sig.str {
-	case "n":
-		size = 16
-	case "i":
-	case "x":
-		size = 64
-	case "y":
-		size = 8
-		isUnsigned = true
-	case "q":
-		size = 16
-		isUnsigned = true
-	case "u":
-		isUnsigned = true
-	case "t":
-		size = 64
-		isUnsigned = true
-	case "d":
-		d, err := strconv.ParseFloat(s, 64)
-		if err != nil {
-			return nil, err
-		}
-		return d, nil
-	default:
-		return nil, varTypeError{s, sig}
-	}
-	base := 10
-	if strings.HasPrefix(s, "0x") {
-		base = 16
-		s = s[2:]
-	}
-	if strings.HasPrefix(s, "0") && len(s) != 1 {
-		base = 8
-		s = s[1:]
-	}
-	if isUnsigned {
-		i, err := strconv.ParseUint(s, base, size)
-		if err != nil {
-			return nil, err
-		}
-		var v interface{} = i
-		switch sig.str {
-		case "y":
-			v = byte(i)
-		case "q":
-			v = uint16(i)
-		case "u":
-			v = uint32(i)
-		}
-		return v, nil
-	}
-	i, err := strconv.ParseInt(s, base, size)
-	if err != nil {
-		return nil, err
-	}
-	var v interface{} = i
-	switch sig.str {
-	case "n":
-		v = int16(i)
-	case "i":
-		v = int32(i)
-	}
-	return v, nil
-}
-
-type stringNode struct {
-	sig Signature
-	str string      // parsed
-	val interface{} // has correct type
-}
-
-var stringSigSet = sigSet{
-	Signature{"s"}: true,
-	Signature{"g"}: true,
-	Signature{"o"}: true,
-}
-
-func (n stringNode) Infer() (Signature, error) {
-	return Signature{"s"}, nil
-}
-
-func (n stringNode) String() string {
-	return n.str
-}
-
-func (n stringNode) Sigs() sigSet {
-	if n.sig.str != "" {
-		return sigSet{n.sig: true}
-	}
-	return stringSigSet
-}
-
-func (n stringNode) Value(sig Signature) (interface{}, error) {
-	if n.sig.str != "" && n.sig != sig {
-		return nil, varTypeError{n.str, sig}
-	}
-	if n.val != nil {
-		return n.val, nil
-	}
-	switch {
-	case sig.str == "g":
-		return Signature{n.str}, nil
-	case sig.str == "o":
-		return ObjectPath(n.str), nil
-	case sig.str == "s":
-		return n.str, nil
-	default:
-		return nil, varTypeError{n.str, sig}
-	}
-}
-
-func varMakeStringNode(tok varToken, sig Signature) (varNode, error) {
-	if sig.str != "" && sig.str != "s" && sig.str != "g" && sig.str != "o" {
-		return nil, fmt.Errorf("invalid type %q for string", sig.str)
-	}
-	s, err := varParseString(tok.val)
-	if err != nil {
-		return nil, err
-	}
-	n := stringNode{str: s}
-	if sig.str == "" {
-		return stringNode{str: s}, nil
-	}
-	n.sig = sig
-	switch sig.str {
-	case "o":
-		n.val = ObjectPath(s)
-	case "g":
-		n.val = Signature{s}
-	case "s":
-		n.val = s
-	}
-	return n, nil
-}
-
-func varParseString(s string) (string, error) {
-	// quotes are guaranteed to be there
-	s = s[1 : len(s)-1]
-	buf := new(bytes.Buffer)
-	for len(s) != 0 {
-		r, size := utf8.DecodeRuneInString(s)
-		if r == utf8.RuneError && size == 1 {
-			return "", errors.New("invalid UTF-8")
-		}
-		s = s[size:]
-		if r != '\\' {
-			buf.WriteRune(r)
-			continue
-		}
-		r, size = utf8.DecodeRuneInString(s)
-		if r == utf8.RuneError && size == 1 {
-			return "", errors.New("invalid UTF-8")
-		}
-		s = s[size:]
-		switch r {
-		case 'a':
-			buf.WriteRune(0x7)
-		case 'b':
-			buf.WriteRune(0x8)
-		case 'f':
-			buf.WriteRune(0xc)
-		case 'n':
-			buf.WriteRune('\n')
-		case 'r':
-			buf.WriteRune('\r')
-		case 't':
-			buf.WriteRune('\t')
-		case '\n':
-		case 'u':
-			if len(s) < 4 {
-				return "", errors.New("short unicode escape")
-			}
-			r, err := strconv.ParseUint(s[:4], 16, 32)
-			if err != nil {
-				return "", err
-			}
-			buf.WriteRune(rune(r))
-			s = s[4:]
-		case 'U':
-			if len(s) < 8 {
-				return "", errors.New("short unicode escape")
-			}
-			r, err := strconv.ParseUint(s[:8], 16, 32)
-			if err != nil {
-				return "", err
-			}
-			buf.WriteRune(rune(r))
-			s = s[8:]
-		default:
-			buf.WriteRune(r)
-		}
-	}
-	return buf.String(), nil
-}
-
-var boolSigSet = sigSet{Signature{"b"}: true}
-
-type boolNode bool
-
-func (boolNode) Infer() (Signature, error) {
-	return Signature{"b"}, nil
-}
-
-func (b boolNode) String() string {
-	if b {
-		return "true"
-	}
-	return "false"
-}
-
-func (boolNode) Sigs() sigSet {
-	return boolSigSet
-}
-
-func (b boolNode) Value(sig Signature) (interface{}, error) {
-	if sig.str != "b" {
-		return nil, varTypeError{b.String(), sig}
-	}
-	return bool(b), nil
-}
-
-type arrayNode struct {
-	set      sigSet
-	children []varNode
-	val      interface{}
-}
-
-func (n arrayNode) Infer() (Signature, error) {
-	for _, v := range n.children {
-		csig, err := varInfer(v)
-		if err != nil {
-			continue
-		}
-		return Signature{"a" + csig.str}, nil
-	}
-	return Signature{}, fmt.Errorf("can't infer type for %q", n.String())
-}
-
-func (n arrayNode) String() string {
-	s := "["
-	for i, v := range n.children {
-		s += v.String()
-		if i != len(n.children)-1 {
-			s += ", "
-		}
-	}
-	return s + "]"
-}
-
-func (n arrayNode) Sigs() sigSet {
-	return n.set
-}
-
-func (n arrayNode) Value(sig Signature) (interface{}, error) {
-	if n.set.Empty() {
-		// no type information whatsoever, so this must be an empty slice
-		return reflect.MakeSlice(typeFor(sig.str), 0, 0).Interface(), nil
-	}
-	if !n.set[sig] {
-		return nil, varTypeError{n.String(), sig}
-	}
-	s := reflect.MakeSlice(typeFor(sig.str), len(n.children), len(n.children))
-	for i, v := range n.children {
-		rv, err := v.Value(Signature{sig.str[1:]})
-		if err != nil {
-			return nil, err
-		}
-		s.Index(i).Set(reflect.ValueOf(rv))
-	}
-	return s.Interface(), nil
-}
-
-func varMakeArrayNode(p *varParser, sig Signature) (varNode, error) {
-	var n arrayNode
-	if sig.str != "" {
-		n.set = sigSet{sig: true}
-	}
-	if t := p.next(); t.typ == tokArrayEnd {
-		return n, nil
-	} else {
-		p.backup()
-	}
-Loop:
-	for {
-		t := p.next()
-		switch t.typ {
-		case tokEOF:
-			return nil, io.ErrUnexpectedEOF
-		case tokError:
-			return nil, errors.New(t.val)
-		}
-		p.backup()
-		cn, err := varMakeNode(p)
-		if err != nil {
-			return nil, err
-		}
-		if cset := cn.Sigs(); !cset.Empty() {
-			if n.set.Empty() {
-				n.set = cset.ToArray()
-			} else {
-				nset := cset.ToArray().Intersect(n.set)
-				if nset.Empty() {
-					return nil, fmt.Errorf("can't parse %q with given type information", cn.String())
-				}
-				n.set = nset
-			}
-		}
-		n.children = append(n.children, cn)
-		switch t := p.next(); t.typ {
-		case tokEOF:
-			return nil, io.ErrUnexpectedEOF
-		case tokError:
-			return nil, errors.New(t.val)
-		case tokArrayEnd:
-			break Loop
-		case tokComma:
-			continue
-		default:
-			return nil, fmt.Errorf("unexpected %q", t.val)
-		}
-	}
-	return n, nil
-}
-
-type variantNode struct {
-	n varNode
-}
-
-var variantSet = sigSet{
-	Signature{"v"}: true,
-}
-
-func (variantNode) Infer() (Signature, error) {
-	return Signature{"v"}, nil
-}
-
-func (n variantNode) String() string {
-	return "<" + n.n.String() + ">"
-}
-
-func (variantNode) Sigs() sigSet {
-	return variantSet
-}
-
-func (n variantNode) Value(sig Signature) (interface{}, error) {
-	if sig.str != "v" {
-		return nil, varTypeError{n.String(), sig}
-	}
-	sig, err := varInfer(n.n)
-	if err != nil {
-		return nil, err
-	}
-	v, err := n.n.Value(sig)
-	if err != nil {
-		return nil, err
-	}
-	return MakeVariant(v), nil
-}
-
-func varMakeVariantNode(p *varParser, sig Signature) (varNode, error) {
-	n, err := varMakeNode(p)
-	if err != nil {
-		return nil, err
-	}
-	if t := p.next(); t.typ != tokVariantEnd {
-		return nil, fmt.Errorf("unexpected %q", t.val)
-	}
-	vn := variantNode{n}
-	if sig.str != "" && sig.str != "v" {
-		return nil, varTypeError{vn.String(), sig}
-	}
-	return variantNode{n}, nil
-}
-
-type dictEntry struct {
-	key, val varNode
-}
-
-type dictNode struct {
-	kset, vset sigSet
-	children   []dictEntry
-	val        interface{}
-}
-
-func (n dictNode) Infer() (Signature, error) {
-	for _, v := range n.children {
-		ksig, err := varInfer(v.key)
-		if err != nil {
-			continue
-		}
-		vsig, err := varInfer(v.val)
-		if err != nil {
-			continue
-		}
-		return Signature{"a{" + ksig.str + vsig.str + "}"}, nil
-	}
-	return Signature{}, fmt.Errorf("can't infer type for %q", n.String())
-}
-
-func (n dictNode) String() string {
-	s := "{"
-	for i, v := range n.children {
-		s += v.key.String() + ": " + v.val.String()
-		if i != len(n.children)-1 {
-			s += ", "
-		}
-	}
-	return s + "}"
-}
-
-func (n dictNode) Sigs() sigSet {
-	r := sigSet{}
-	for k := range n.kset {
-		for v := range n.vset {
-			sig := "a{" + k.str + v.str + "}"
-			r[Signature{sig}] = true
-		}
-	}
-	return r
-}
-
-func (n dictNode) Value(sig Signature) (interface{}, error) {
-	set := n.Sigs()
-	if set.Empty() {
-		// no type information -> empty dict
-		return reflect.MakeMap(typeFor(sig.str)).Interface(), nil
-	}
-	if !set[sig] {
-		return nil, varTypeError{n.String(), sig}
-	}
-	m := reflect.MakeMap(typeFor(sig.str))
-	ksig := Signature{sig.str[2:3]}
-	vsig := Signature{sig.str[3 : len(sig.str)-1]}
-	for _, v := range n.children {
-		kv, err := v.key.Value(ksig)
-		if err != nil {
-			return nil, err
-		}
-		vv, err := v.val.Value(vsig)
-		if err != nil {
-			return nil, err
-		}
-		m.SetMapIndex(reflect.ValueOf(kv), reflect.ValueOf(vv))
-	}
-	return m.Interface(), nil
-}
-
-func varMakeDictNode(p *varParser, sig Signature) (varNode, error) {
-	var n dictNode
-
-	if sig.str != "" {
-		if len(sig.str) < 5 {
-			return nil, fmt.Errorf("invalid signature %q for dict type", sig)
-		}
-		ksig := Signature{string(sig.str[2])}
-		vsig := Signature{sig.str[3 : len(sig.str)-1]}
-		n.kset = sigSet{ksig: true}
-		n.vset = sigSet{vsig: true}
-	}
-	if t := p.next(); t.typ == tokDictEnd {
-		return n, nil
-	} else {
-		p.backup()
-	}
-Loop:
-	for {
-		t := p.next()
-		switch t.typ {
-		case tokEOF:
-			return nil, io.ErrUnexpectedEOF
-		case tokError:
-			return nil, errors.New(t.val)
-		}
-		p.backup()
-		kn, err := varMakeNode(p)
-		if err != nil {
-			return nil, err
-		}
-		if kset := kn.Sigs(); !kset.Empty() {
-			if n.kset.Empty() {
-				n.kset = kset
-			} else {
-				n.kset = kset.Intersect(n.kset)
-				if n.kset.Empty() {
-					return nil, fmt.Errorf("can't parse %q with given type information", kn.String())
-				}
-			}
-		}
-		t = p.next()
-		switch t.typ {
-		case tokEOF:
-			return nil, io.ErrUnexpectedEOF
-		case tokError:
-			return nil, errors.New(t.val)
-		case tokColon:
-		default:
-			return nil, fmt.Errorf("unexpected %q", t.val)
-		}
-		t = p.next()
-		switch t.typ {
-		case tokEOF:
-			return nil, io.ErrUnexpectedEOF
-		case tokError:
-			return nil, errors.New(t.val)
-		}
-		p.backup()
-		vn, err := varMakeNode(p)
-		if err != nil {
-			return nil, err
-		}
-		if vset := vn.Sigs(); !vset.Empty() {
-			if n.vset.Empty() {
-				n.vset = vset
-			} else {
-				n.vset = n.vset.Intersect(vset)
-				if n.vset.Empty() {
-					return nil, fmt.Errorf("can't parse %q with given type information", vn.String())
-				}
-			}
-		}
-		n.children = append(n.children, dictEntry{kn, vn})
-		t = p.next()
-		switch t.typ {
-		case tokEOF:
-			return nil, io.ErrUnexpectedEOF
-		case tokError:
-			return nil, errors.New(t.val)
-		case tokDictEnd:
-			break Loop
-		case tokComma:
-			continue
-		default:
-			return nil, fmt.Errorf("unexpected %q", t.val)
-		}
-	}
-	return n, nil
-}
-
-type byteStringNode []byte
-
-var byteStringSet = sigSet{
-	Signature{"ay"}: true,
-}
-
-func (byteStringNode) Infer() (Signature, error) {
-	return Signature{"ay"}, nil
-}
-
-func (b byteStringNode) String() string {
-	return string(b)
-}
-
-func (b byteStringNode) Sigs() sigSet {
-	return byteStringSet
-}
-
-func (b byteStringNode) Value(sig Signature) (interface{}, error) {
-	if sig.str != "ay" {
-		return nil, varTypeError{b.String(), sig}
-	}
-	return []byte(b), nil
-}
-
-func varParseByteString(s string) ([]byte, error) {
-	// quotes and b at start are guaranteed to be there
-	b := make([]byte, 0, 1)
-	s = s[2 : len(s)-1]
-	for len(s) != 0 {
-		c := s[0]
-		s = s[1:]
-		if c != '\\' {
-			b = append(b, c)
-			continue
-		}
-		c = s[0]
-		s = s[1:]
-		switch c {
-		case 'a':
-			b = append(b, 0x7)
-		case 'b':
-			b = append(b, 0x8)
-		case 'f':
-			b = append(b, 0xc)
-		case 'n':
-			b = append(b, '\n')
-		case 'r':
-			b = append(b, '\r')
-		case 't':
-			b = append(b, '\t')
-		case 'x':
-			if len(s) < 2 {
-				return nil, errors.New("short escape")
-			}
-			n, err := strconv.ParseUint(s[:2], 16, 8)
-			if err != nil {
-				return nil, err
-			}
-			b = append(b, byte(n))
-			s = s[2:]
-		case '0':
-			if len(s) < 3 {
-				return nil, errors.New("short escape")
-			}
-			n, err := strconv.ParseUint(s[:3], 8, 8)
-			if err != nil {
-				return nil, err
-			}
-			b = append(b, byte(n))
-			s = s[3:]
-		default:
-			b = append(b, c)
-		}
-	}
-	return append(b, 0), nil
-}
-
-func varInfer(n varNode) (Signature, error) {
-	if sig, ok := n.Sigs().Single(); ok {
-		return sig, nil
-	}
-	return n.Infer()
-}

vendor/src/github.com/opencontainers/runc/libcontainer/README.md

@@ -1,241 +0,0 @@
-Libcontainer provides a native Go implementation for creating containers
-with namespaces, cgroups, capabilities, and filesystem access controls.
-It allows you to manage the lifecycle of the container performing additional operations
-after the container is created.
-
-
-#### Container
-A container is a self contained execution environment that shares the kernel of the
-host system and which is (optionally) isolated from other containers in the system.
-
-#### Using libcontainer
-
-Because containers are spawned in a two step process you will need a binary that
-will be executed as the init process for the container. In libcontainer, we use
-the current binary (/proc/self/exe) to be executed as the init process, and use
-arg "init", we call the first step process "bootstrap", so you always need a "init"
-function as the entry of "bootstrap".
-
-```go
-func init() {
-	if len(os.Args) > 1 && os.Args[1] == "init" {
-		runtime.GOMAXPROCS(1)
-		runtime.LockOSThread()
-		factory, _ := libcontainer.New("")
-		if err := factory.StartInitialization(); err != nil {
-			logrus.Fatal(err)
-		}
-		panic("--this line should have never been executed, congratulations--")
-	}
-}
-```
-
-Then to create a container you first have to initialize an instance of a factory
-that will handle the creation and initialization for a container.
-
-```go
-factory, err := libcontainer.New("/var/lib/container", libcontainer.Cgroupfs, libcontainer.InitArgs(os.Args[0], "init"))
-if err != nil {
-	logrus.Fatal(err)
-	return
-}
-```
-
-Once you have an instance of the factory created we can create a configuration
-struct describing how the container is to be created. A sample would look similar to this:
-
-```go
-defaultMountFlags := syscall.MS_NOEXEC | syscall.MS_NOSUID | syscall.MS_NODEV
-config := &configs.Config{
-	Rootfs: "/your/path/to/rootfs",
-	Capabilities: []string{
-		"CAP_CHOWN",
-		"CAP_DAC_OVERRIDE",
-		"CAP_FSETID",
-		"CAP_FOWNER",
-		"CAP_MKNOD",
-		"CAP_NET_RAW",
-		"CAP_SETGID",
-		"CAP_SETUID",
-		"CAP_SETFCAP",
-		"CAP_SETPCAP",
-		"CAP_NET_BIND_SERVICE",
-		"CAP_SYS_CHROOT",
-		"CAP_KILL",
-		"CAP_AUDIT_WRITE",
-	},
-	Namespaces: configs.Namespaces([]configs.Namespace{
-		{Type: configs.NEWNS},
-		{Type: configs.NEWUTS},
-		{Type: configs.NEWIPC},
-		{Type: configs.NEWPID},
-		{Type: configs.NEWUSER},
-		{Type: configs.NEWNET},
-	}),
-	Cgroups: &configs.Cgroup{
-		Name:   "test-container",
-		Parent: "system",
-		Resources: &configs.Resources{
-			MemorySwappiness: nil,
-			AllowAllDevices:  false,
-			AllowedDevices:   configs.DefaultAllowedDevices,
-		},
-	},
-	MaskPaths: []string{
-		"/proc/kcore",
-	},
-	ReadonlyPaths: []string{
-		"/proc/sys", "/proc/sysrq-trigger", "/proc/irq", "/proc/bus",
-	},
-	Devices:  configs.DefaultAutoCreatedDevices,
-	Hostname: "testing",
-	Mounts: []*configs.Mount{
-		{
-			Source:      "proc",
-			Destination: "/proc",
-			Device:      "proc",
-			Flags:       defaultMountFlags,
-		},
-		{
-			Source:      "tmpfs",
-			Destination: "/dev",
-			Device:      "tmpfs",
-			Flags:       syscall.MS_NOSUID | syscall.MS_STRICTATIME,
-			Data:        "mode=755",
-		},
-		{
-			Source:      "devpts",
-			Destination: "/dev/pts",
-			Device:      "devpts",
-			Flags:       syscall.MS_NOSUID | syscall.MS_NOEXEC,
-			Data:        "newinstance,ptmxmode=0666,mode=0620,gid=5",
-		},
-		{
-			Device:      "tmpfs",
-			Source:      "shm",
-			Destination: "/dev/shm",
-			Data:        "mode=1777,size=65536k",
-			Flags:       defaultMountFlags,
-		},
-		{
-			Source:      "mqueue",
-			Destination: "/dev/mqueue",
-			Device:      "mqueue",
-			Flags:       defaultMountFlags,
-		},
-		{
-			Source:      "sysfs",
-			Destination: "/sys",
-			Device:      "sysfs",
-			Flags:       defaultMountFlags | syscall.MS_RDONLY,
-		},
-	},
-	UidMappings: []configs.IDMap{
-		{
-			ContainerID: 0,
-			HostID: 1000,
-			Size: 65536,
-		},
-	},
-	GidMappings: []configs.IDMap{
-		{
-			ContainerID: 0,
-			HostID: 1000,
-			Size: 65536,
-		},
-	},
-	Networks: []*configs.Network{
-		{
-			Type:    "loopback",
-			Address: "127.0.0.1/0",
-			Gateway: "localhost",
-		},
-	},
-	Rlimits: []configs.Rlimit{
-		{
-			Type: syscall.RLIMIT_NOFILE,
-			Hard: uint64(1025),
-			Soft: uint64(1025),
-		},
-	},
-}
-```
-
-Once you have the configuration populated you can create a container:
-
-```go
-container, err := factory.Create("container-id", config)
-if err != nil {
-	logrus.Fatal(err)
-	return
-}
-```
-
-To spawn bash as the initial process inside the container and have the
-processes pid returned in order to wait, signal, or kill the process:
-
-```go
-process := &libcontainer.Process{
-	Args:   []string{"/bin/bash"},
-	Env:    []string{"PATH=/bin"},
-	User:   "daemon",
-	Stdin:  os.Stdin,
-	Stdout: os.Stdout,
-	Stderr: os.Stderr,
-}
-
-err := container.Start(process)
-if err != nil {
-	logrus.Fatal(err)
-	container.Destroy()
-	return
-}
-
-// wait for the process to finish.
-_, err := process.Wait()
-if err != nil {
-	logrus.Fatal(err)
-}
-
-// destroy the container.
-container.Destroy()
-```
-
-Additional ways to interact with a running container are:
-
-```go
-// return all the pids for all processes running inside the container.
-processes, err := container.Processes()
-
-// get detailed cpu, memory, io, and network statistics for the container and
-// it's processes.
-stats, err := container.Stats()
-
-// pause all processes inside the container.
-container.Pause()
-
-// resume all paused processes.
-container.Resume()
-
-// send signal to container's init process.
-container.Signal(signal)
-```
-
-
-#### Checkpoint & Restore
-
-libcontainer now integrates [CRIU](http://criu.org/) for checkpointing and restoring containers.
-This let's you save the state of a process running inside a container to disk, and then restore
-that state into a new process, on the same machine or on another machine.
-
-`criu` version 1.5.2 or higher is required to use checkpoint and restore.
-If you don't already  have `criu` installed, you can build it from source, following the
-[online instructions](http://criu.org/Installation). `criu` is also installed in the docker image
-generated when building libcontainer with docker.
-
-
-## Copyright and license
-
-Code and documentation copyright 2014 Docker, inc. Code released under the Apache 2.0 license.
-Docs released under Creative commons.
-

vendor/src/github.com/opencontainers/runc/libcontainer/SPEC.md

@@ -1,335 +0,0 @@
-## Container Specification - v1
-
-This is the standard configuration for version 1 containers.  It includes
-namespaces, standard filesystem setup, a default Linux capability set, and
-information about resource reservations.  It also has information about any 
-populated environment settings for the processes running inside a container.
-
-Along with the configuration of how a container is created the standard also
-discusses actions that can be performed on a container to manage and inspect
-information about the processes running inside.
-
-The v1 profile is meant to be able to accommodate the majority of applications
-with a strong security configuration.
-
-### System Requirements and Compatibility
-
-Minimum requirements:
-* Kernel version - 3.10 recommended 2.6.2x minimum(with backported patches)
-* Mounted cgroups with each subsystem in its own hierarchy
-
-
-### Namespaces
-
-|     Flag      | Enabled | 
-| ------------  | ------- |
-| CLONE_NEWPID  |    1    |
-| CLONE_NEWUTS  |    1    |
-| CLONE_NEWIPC  |    1    |
-| CLONE_NEWNET  |    1    |
-| CLONE_NEWNS   |    1    |
-| CLONE_NEWUSER |    1    |
-
-Namespaces are created for the container via the `clone` syscall.  
-
-
-### Filesystem
-
-A root filesystem must be provided to a container for execution.  The container
-will use this root filesystem (rootfs) to jail and spawn processes inside where
-the binaries and system libraries are local to that directory.  Any binaries
-to be executed must be contained within this rootfs.
-
-Mounts that happen inside the container are automatically cleaned up when the
-container exits as the mount namespace is destroyed and the kernel will 
-unmount all the mounts that were setup within that namespace.
-
-For a container to execute properly there are certain filesystems that 
-are required to be mounted within the rootfs that the runtime will setup.
-
-|     Path    |  Type  |                  Flags                 |                 Data                     |
-| ----------- | ------ | -------------------------------------- | ---------------------------------------- |
-| /proc       | proc   | MS_NOEXEC,MS_NOSUID,MS_NODEV           |                                          |
-| /dev        | tmpfs  | MS_NOEXEC,MS_STRICTATIME               | mode=755                                 |
-| /dev/shm    | tmpfs  | MS_NOEXEC,MS_NOSUID,MS_NODEV           | mode=1777,size=65536k                    |
-| /dev/mqueue | mqueue | MS_NOEXEC,MS_NOSUID,MS_NODEV           |                                          |
-| /dev/pts    | devpts | MS_NOEXEC,MS_NOSUID                    | newinstance,ptmxmode=0666,mode=620,gid=5 |
-| /sys        | sysfs  | MS_NOEXEC,MS_NOSUID,MS_NODEV,MS_RDONLY |                                          |
-
-
-After a container's filesystems are mounted within the newly created 
-mount namespace `/dev` will need to be populated with a set of device nodes.
-It is expected that a rootfs does not need to have any device nodes specified
-for `/dev` within the rootfs as the container will setup the correct devices
-that are required for executing a container's process.
-
-|      Path    | Mode |   Access   |
-| ------------ | ---- | ---------- |
-| /dev/null    | 0666 |  rwm       |
-| /dev/zero    | 0666 |  rwm       |
-| /dev/full    | 0666 |  rwm       |
-| /dev/tty     | 0666 |  rwm       |
-| /dev/random  | 0666 |  rwm       |
-| /dev/urandom | 0666 |  rwm       |
-| /dev/fuse    | 0666 |  rwm       |
-
-
-**ptmx**
-`/dev/ptmx` will need to be a symlink to the host's `/dev/ptmx` within
-the container.  
-
-The use of a pseudo TTY is optional within a container and it should support both.
-If a pseudo is provided to the container `/dev/console` will need to be 
-setup by binding the console in `/dev/` after it has been populated and mounted
-in tmpfs.
-
-|      Source     | Destination  | UID GID | Mode | Type |
-| --------------- | ------------ | ------- | ---- | ---- |
-| *pty host path* | /dev/console | 0 0     | 0600 | bind | 
-
-
-After `/dev/null` has been setup we check for any external links between
-the container's io, STDIN, STDOUT, STDERR.  If the container's io is pointing
-to `/dev/null` outside the container we close and `dup2` the `/dev/null` 
-that is local to the container's rootfs.
-
-
-After the container has `/proc` mounted a few standard symlinks are setup 
-within `/dev/` for the io.
-
-|    Source       | Destination |
-| --------------- | ----------- |
-| /proc/self/fd   | /dev/fd     |
-| /proc/self/fd/0 | /dev/stdin  |
-| /proc/self/fd/1 | /dev/stdout |
-| /proc/self/fd/2 | /dev/stderr |
-
-A `pivot_root` is used to change the root for the process, effectively 
-jailing the process inside the rootfs.
-
-```c
-put_old = mkdir(...);
-pivot_root(rootfs, put_old);
-chdir("/");
-unmount(put_old, MS_DETACH);
-rmdir(put_old);
-```
-
-For container's running with a rootfs inside `ramfs` a `MS_MOVE` combined
-with a `chroot` is required as `pivot_root` is not supported in `ramfs`.
-
-```c
-mount(rootfs, "/", NULL, MS_MOVE, NULL);
-chroot(".");
-chdir("/");
-```
-
-The `umask` is set back to `0022` after the filesystem setup has been completed.
-
-### Resources
-
-Cgroups are used to handle resource allocation for containers.  This includes
-system resources like cpu, memory, and device access.
-
-| Subsystem  | Enabled |
-| ---------- | ------- |
-| devices    | 1       |
-| memory     | 1       |
-| cpu        | 1       |
-| cpuacct    | 1       |
-| cpuset     | 1       |
-| blkio      | 1       |
-| perf_event | 1       |
-| freezer    | 1       |
-| hugetlb    | 1       |
-| pids       | 1       |
-
-
-All cgroup subsystem are joined so that statistics can be collected from
-each of the subsystems.  Freezer does not expose any stats but is joined
-so that containers can be paused and resumed.
-
-The parent process of the container's init must place the init pid inside
-the correct cgroups before the initialization begins.  This is done so
-that no processes or threads escape the cgroups.  This sync is 
-done via a pipe ( specified in the runtime section below ) that the container's
-init process will block waiting for the parent to finish setup.
-
-### Security 
-
-The standard set of Linux capabilities that are set in a container
-provide a good default for security and flexibility for the applications.
-
-
-|     Capability       | Enabled |
-| -------------------- | ------- |
-| CAP_NET_RAW          | 1       |
-| CAP_NET_BIND_SERVICE | 1       |
-| CAP_AUDIT_READ       | 1       |
-| CAP_AUDIT_WRITE      | 1       |
-| CAP_DAC_OVERRIDE     | 1       |
-| CAP_SETFCAP          | 1       |
-| CAP_SETPCAP          | 1       |
-| CAP_SETGID           | 1       |
-| CAP_SETUID           | 1       |
-| CAP_MKNOD            | 1       |
-| CAP_CHOWN            | 1       |
-| CAP_FOWNER           | 1       |
-| CAP_FSETID           | 1       |
-| CAP_KILL             | 1       |
-| CAP_SYS_CHROOT       | 1       |
-| CAP_NET_BROADCAST    | 0       |
-| CAP_SYS_MODULE       | 0       |
-| CAP_SYS_RAWIO        | 0       |
-| CAP_SYS_PACCT        | 0       |
-| CAP_SYS_ADMIN        | 0       |
-| CAP_SYS_NICE         | 0       |
-| CAP_SYS_RESOURCE     | 0       |
-| CAP_SYS_TIME         | 0       |
-| CAP_SYS_TTY_CONFIG   | 0       |
-| CAP_AUDIT_CONTROL    | 0       |
-| CAP_MAC_OVERRIDE     | 0       |
-| CAP_MAC_ADMIN        | 0       |
-| CAP_NET_ADMIN        | 0       |
-| CAP_SYSLOG           | 0       |
-| CAP_DAC_READ_SEARCH  | 0       |
-| CAP_LINUX_IMMUTABLE  | 0       |
-| CAP_IPC_LOCK         | 0       |
-| CAP_IPC_OWNER        | 0       |
-| CAP_SYS_PTRACE       | 0       |
-| CAP_SYS_BOOT         | 0       |
-| CAP_LEASE            | 0       |
-| CAP_WAKE_ALARM       | 0       |
-| CAP_BLOCK_SUSPEND    | 0       |
-
-
-Additional security layers like [apparmor](https://wiki.ubuntu.com/AppArmor)
-and [selinux](http://selinuxproject.org/page/Main_Page) can be used with
-the containers.  A container should support setting an apparmor profile or 
-selinux process and mount labels if provided in the configuration.  
-
-Standard apparmor profile:
-```c
-#include <tunables/global>
-profile <profile_name> flags=(attach_disconnected,mediate_deleted) {
-  #include <abstractions/base>
-  network,
-  capability,
-  file,
-  umount,
-
-  deny @{PROC}/sys/fs/** wklx,
-  deny @{PROC}/sysrq-trigger rwklx,
-  deny @{PROC}/mem rwklx,
-  deny @{PROC}/kmem rwklx,
-  deny @{PROC}/sys/kernel/[^s][^h][^m]* wklx,
-  deny @{PROC}/sys/kernel/*/** wklx,
-
-  deny mount,
-
-  deny /sys/[^f]*/** wklx,
-  deny /sys/f[^s]*/** wklx,
-  deny /sys/fs/[^c]*/** wklx,
-  deny /sys/fs/c[^g]*/** wklx,
-  deny /sys/fs/cg[^r]*/** wklx,
-  deny /sys/firmware/efi/efivars/** rwklx,
-  deny /sys/kernel/security/** rwklx,
-}
-```
-
-*TODO: seccomp work is being done to find a good default config*
-
-### Runtime and Init Process
-
-During container creation the parent process needs to talk to the container's init 
-process and have a form of synchronization.  This is accomplished by creating
-a pipe that is passed to the container's init.  When the init process first spawns 
-it will block on its side of the pipe until the parent closes its side.  This
-allows the parent to have time to set the new process inside a cgroup hierarchy 
-and/or write any uid/gid mappings required for user namespaces.  
-The pipe is passed to the init process via FD 3.
-
-The application consuming libcontainer should be compiled statically.  libcontainer
-does not define any init process and the arguments provided are used to `exec` the
-process inside the application.  There should be no long running init within the 
-container spec.
-
-If a pseudo tty is provided to a container it will open and `dup2` the console
-as the container's STDIN, STDOUT, STDERR as well as mounting the console
-as `/dev/console`.
-
-An extra set of mounts are provided to a container and setup for use.  A container's
-rootfs can contain some non portable files inside that can cause side effects during
-execution of a process.  These files are usually created and populated with the container
-specific information via the runtime.  
-
-**Extra runtime files:**
-* /etc/hosts 
-* /etc/resolv.conf
-* /etc/hostname
-* /etc/localtime
-
-
-#### Defaults
-
-There are a few defaults that can be overridden by users, but in their omission
-these apply to processes within a container.
-
-|       Type          |             Value              |
-| ------------------- | ------------------------------ |
-| Parent Death Signal | SIGKILL                        | 
-| UID                 | 0                              |
-| GID                 | 0                              |
-| GROUPS              | 0, NULL                        |
-| CWD                 | "/"                            |
-| $HOME               | Current user's home dir or "/" |
-| Readonly rootfs     | false                          |
-| Pseudo TTY          | false                          |
-
-
-## Actions
-
-After a container is created there is a standard set of actions that can
-be done to the container.  These actions are part of the public API for 
-a container.
-
-|     Action     |                         Description                                |
-| -------------- | ------------------------------------------------------------------ |
-| Get processes  | Return all the pids for processes running inside a container       | 
-| Get Stats      | Return resource statistics for the container as a whole            |
-| Wait           | Wait waits on the container's init process ( pid 1 )               |
-| Wait Process   | Wait on any of the container's processes returning the exit status | 
-| Destroy        | Kill the container's init process and remove any filesystem state  |
-| Signal         | Send a signal to the container's init process                      |
-| Signal Process | Send a signal to any of the container's processes                  |
-| Pause          | Pause all processes inside the container                           |
-| Resume         | Resume all processes inside the container if paused                |
-| Exec           | Execute a new process inside of the container  ( requires setns )  |
-| Set            | Setup configs of the container after it's created                  |
-
-### Execute a new process inside of a running container.
-
-User can execute a new process inside of a running container. Any binaries to be
-executed must be accessible within the container's rootfs.
-
-The started process will run inside the container's rootfs. Any changes
-made by the process to the container's filesystem will persist after the
-process finished executing.
-
-The started process will join all the container's existing namespaces. When the
-container is paused, the process will also be paused and will resume when
-the container is unpaused.  The started process will only run when the container's
-primary process (PID 1) is running, and will not be restarted when the container
-is restarted.
-
-#### Planned additions
-
-The started process will have its own cgroups nested inside the container's
-cgroups. This is used for process tracking and optionally resource allocation
-handling for the new process. Freezer cgroup is required, the rest of the cgroups
-are optional. The process executor must place its pid inside the correct
-cgroups before starting the process. This is done so that no child processes or
-threads can escape the cgroups.
-
-When the process is stopped, the process executor will try (in a best-effort way)
-to stop all its children and remove the sub-cgroups.

vendor/src/github.com/opencontainers/runc/libcontainer/apparmor/apparmor.go

@@ -1,39 +0,0 @@
-// +build apparmor,linux
-
-package apparmor
-
-// #cgo LDFLAGS: -lapparmor
-// #include <sys/apparmor.h>
-// #include <stdlib.h>
-import "C"
-import (
-	"fmt"
-	"io/ioutil"
-	"os"
-	"unsafe"
-)
-
-// IsEnabled returns true if apparmor is enabled for the host.
-func IsEnabled() bool {
-	if _, err := os.Stat("/sys/kernel/security/apparmor"); err == nil && os.Getenv("container") == "" {
-		if _, err = os.Stat("/sbin/apparmor_parser"); err == nil {
-			buf, err := ioutil.ReadFile("/sys/module/apparmor/parameters/enabled")
-			return err == nil && len(buf) > 1 && buf[0] == 'Y'
-		}
-	}
-	return false
-}
-
-// ApplyProfile will apply the profile with the specified name to the process after
-// the next exec.
-func ApplyProfile(name string) error {
-	if name == "" {
-		return nil
-	}
-	cName := C.CString(name)
-	defer C.free(unsafe.Pointer(cName))
-	if _, err := C.aa_change_onexec(cName); err != nil {
-		return fmt.Errorf("apparmor failed to apply profile: %s", err)
-	}
-	return nil
-}

vendor/src/github.com/opencontainers/runc/libcontainer/apparmor/apparmor_disabled.go

@@ -1,20 +0,0 @@
-// +build !apparmor !linux
-
-package apparmor
-
-import (
-	"errors"
-)
-
-var ErrApparmorNotEnabled = errors.New("apparmor: config provided but apparmor not supported")
-
-func IsEnabled() bool {
-	return false
-}
-
-func ApplyProfile(name string) error {
-	if name != "" {
-		return ErrApparmorNotEnabled
-	}
-	return nil
-}

vendor/src/github.com/opencontainers/runc/libcontainer/capabilities_linux.go

@@ -1,69 +0,0 @@
-// +build linux
-
-package libcontainer
-
-import (
-	"fmt"
-	"os"
-	"strings"
-
-	"github.com/syndtr/gocapability/capability"
-)
-
-const allCapabilityTypes = capability.CAPS | capability.BOUNDS
-
-var capabilityMap map[string]capability.Cap
-
-func init() {
-	capabilityMap = make(map[string]capability.Cap)
-	last := capability.CAP_LAST_CAP
-	// workaround for RHEL6 which has no /proc/sys/kernel/cap_last_cap
-	if last == capability.Cap(63) {
-		last = capability.CAP_BLOCK_SUSPEND
-	}
-	for _, cap := range capability.List() {
-		if cap > last {
-			continue
-		}
-		capKey := fmt.Sprintf("CAP_%s", strings.ToUpper(cap.String()))
-		capabilityMap[capKey] = cap
-	}
-}
-
-func newCapWhitelist(caps []string) (*whitelist, error) {
-	l := []capability.Cap{}
-	for _, c := range caps {
-		v, ok := capabilityMap[c]
-		if !ok {
-			return nil, fmt.Errorf("unknown capability %q", c)
-		}
-		l = append(l, v)
-	}
-	pid, err := capability.NewPid(os.Getpid())
-	if err != nil {
-		return nil, err
-	}
-	return &whitelist{
-		keep: l,
-		pid:  pid,
-	}, nil
-}
-
-type whitelist struct {
-	pid  capability.Capabilities
-	keep []capability.Cap
-}
-
-// dropBoundingSet drops the capability bounding set to those specified in the whitelist.
-func (w *whitelist) dropBoundingSet() error {
-	w.pid.Clear(capability.BOUNDS)
-	w.pid.Set(capability.BOUNDS, w.keep...)
-	return w.pid.Apply(capability.BOUNDS)
-}
-
-// drop drops all capabilities for the current process except those specified in the whitelist.
-func (w *whitelist) drop() error {
-	w.pid.Clear(allCapabilityTypes)
-	w.pid.Set(allCapabilityTypes, w.keep...)
-	return w.pid.Apply(allCapabilityTypes)
-}

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

@@ -1,64 +0,0 @@
-// +build linux
-
-package cgroups
-
-import (
-	"fmt"
-
-	"github.com/opencontainers/runc/libcontainer/configs"
-)
-
-type Manager interface {
-	// Applies cgroup configuration to the process with the specified pid
-	Apply(pid int) error
-
-	// Returns the PIDs inside the cgroup set
-	GetPids() ([]int, error)
-
-	// Returns the PIDs inside the cgroup set & all sub-cgroups
-	GetAllPids() ([]int, error)
-
-	// Returns statistics for the cgroup set
-	GetStats() (*Stats, error)
-
-	// Toggles the freezer cgroup according with specified state
-	Freeze(state configs.FreezerState) error
-
-	// Destroys the cgroup set
-	Destroy() error
-
-	// NewCgroupManager() and LoadCgroupManager() require following attributes:
-	// 	Paths   map[string]string
-	// 	Cgroups *cgroups.Cgroup
-	// Paths maps cgroup subsystem to path at which it is mounted.
-	// Cgroups specifies specific cgroup settings for the various subsystems
-
-	// Returns cgroup paths to save in a state file and to be able to
-	// restore the object later.
-	GetPaths() map[string]string
-
-	// Set the cgroup as configured.
-	Set(container *configs.Config) error
-}
-
-type NotFoundError struct {
-	Subsystem string
-}
-
-func (e *NotFoundError) Error() string {
-	return fmt.Sprintf("mountpoint for %s not found", e.Subsystem)
-}
-
-func NewNotFoundError(sub string) error {
-	return &NotFoundError{
-		Subsystem: sub,
-	}
-}
-
-func IsNotFound(err error) bool {
-	if err == nil {
-		return false
-	}
-	_, ok := err.(*NotFoundError)
-	return ok
-}

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

@@ -1,3 +0,0 @@
-// +build !linux
-
-package cgroups

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

@@ -1,400 +0,0 @@
-// +build linux
-
-package fs
-
-import (
-	"errors"
-	"fmt"
-	"io"
-	"io/ioutil"
-	"os"
-	"path/filepath"
-	"strconv"
-	"sync"
-
-	"github.com/opencontainers/runc/libcontainer/cgroups"
-	"github.com/opencontainers/runc/libcontainer/configs"
-	libcontainerUtils "github.com/opencontainers/runc/libcontainer/utils"
-)
-
-var (
-	subsystems = subsystemSet{
-		&CpusetGroup{},
-		&DevicesGroup{},
-		&MemoryGroup{},
-		&CpuGroup{},
-		&CpuacctGroup{},
-		&PidsGroup{},
-		&BlkioGroup{},
-		&HugetlbGroup{},
-		&NetClsGroup{},
-		&NetPrioGroup{},
-		&PerfEventGroup{},
-		&FreezerGroup{},
-		&NameGroup{GroupName: "name=systemd", Join: true},
-	}
-	CgroupProcesses  = "cgroup.procs"
-	HugePageSizes, _ = cgroups.GetHugePageSize()
-)
-
-var errSubsystemDoesNotExist = errors.New("cgroup: subsystem does not exist")
-
-type subsystemSet []subsystem
-
-func (s subsystemSet) Get(name string) (subsystem, error) {
-	for _, ss := range s {
-		if ss.Name() == name {
-			return ss, nil
-		}
-	}
-	return nil, errSubsystemDoesNotExist
-}
-
-type subsystem interface {
-	// Name returns the name of the subsystem.
-	Name() string
-	// Returns the stats, as 'stats', corresponding to the cgroup under 'path'.
-	GetStats(path string, stats *cgroups.Stats) error
-	// Removes the cgroup represented by 'cgroupData'.
-	Remove(*cgroupData) error
-	// Creates and joins the cgroup represented by 'cgroupData'.
-	Apply(*cgroupData) error
-	// Set the cgroup represented by cgroup.
-	Set(path string, cgroup *configs.Cgroup) error
-}
-
-type Manager struct {
-	mu      sync.Mutex
-	Cgroups *configs.Cgroup
-	Paths   map[string]string
-}
-
-// The absolute path to the root of the cgroup hierarchies.
-var cgroupRootLock sync.Mutex
-var cgroupRoot string
-
-// Gets the cgroupRoot.
-func getCgroupRoot() (string, error) {
-	cgroupRootLock.Lock()
-	defer cgroupRootLock.Unlock()
-
-	if cgroupRoot != "" {
-		return cgroupRoot, nil
-	}
-
-	root, err := cgroups.FindCgroupMountpointDir()
-	if err != nil {
-		return "", err
-	}
-
-	if _, err := os.Stat(root); err != nil {
-		return "", err
-	}
-
-	cgroupRoot = root
-	return cgroupRoot, nil
-}
-
-type cgroupData struct {
-	root      string
-	innerPath string
-	config    *configs.Cgroup
-	pid       int
-}
-
-func (m *Manager) Apply(pid int) (err error) {
-	if m.Cgroups == nil {
-		return nil
-	}
-
-	var c = m.Cgroups
-
-	d, err := getCgroupData(m.Cgroups, pid)
-	if err != nil {
-		return err
-	}
-
-	if c.Paths != nil {
-		paths := make(map[string]string)
-		for name, path := range c.Paths {
-			_, err := d.path(name)
-			if err != nil {
-				if cgroups.IsNotFound(err) {
-					continue
-				}
-				return err
-			}
-			paths[name] = path
-		}
-		m.Paths = paths
-		return cgroups.EnterPid(m.Paths, pid)
-	}
-
-	m.mu.Lock()
-	defer m.mu.Unlock()
-	paths := make(map[string]string)
-	for _, sys := range subsystems {
-		if err := sys.Apply(d); err != nil {
-			return err
-		}
-		// TODO: Apply should, ideally, be reentrant or be broken up into a separate
-		// create and join phase so that the cgroup hierarchy for a container can be
-		// created then join consists of writing the process pids to cgroup.procs
-		p, err := d.path(sys.Name())
-		if err != nil {
-			if cgroups.IsNotFound(err) {
-				continue
-			}
-			return err
-		}
-		paths[sys.Name()] = p
-	}
-	m.Paths = paths
-	return nil
-}
-
-func (m *Manager) Destroy() error {
-	if m.Cgroups.Paths != nil {
-		return nil
-	}
-	m.mu.Lock()
-	defer m.mu.Unlock()
-	if err := cgroups.RemovePaths(m.Paths); err != nil {
-		return err
-	}
-	m.Paths = make(map[string]string)
-	return nil
-}
-
-func (m *Manager) GetPaths() map[string]string {
-	m.mu.Lock()
-	paths := m.Paths
-	m.mu.Unlock()
-	return paths
-}
-
-func (m *Manager) GetStats() (*cgroups.Stats, error) {
-	m.mu.Lock()
-	defer m.mu.Unlock()
-	stats := cgroups.NewStats()
-	for name, path := range m.Paths {
-		sys, err := subsystems.Get(name)
-		if err == errSubsystemDoesNotExist || !cgroups.PathExists(path) {
-			continue
-		}
-		if err := sys.GetStats(path, stats); err != nil {
-			return nil, err
-		}
-	}
-	return stats, nil
-}
-
-func (m *Manager) Set(container *configs.Config) error {
-	for _, sys := range subsystems {
-		// Generate fake cgroup data.
-		d, err := getCgroupData(container.Cgroups, -1)
-		if err != nil {
-			return err
-		}
-		// Get the path, but don't error out if the cgroup wasn't found.
-		path, err := d.path(sys.Name())
-		if err != nil && !cgroups.IsNotFound(err) {
-			return err
-		}
-
-		if err := sys.Set(path, container.Cgroups); err != nil {
-			return err
-		}
-	}
-
-	if m.Paths["cpu"] != "" {
-		if err := CheckCpushares(m.Paths["cpu"], container.Cgroups.Resources.CpuShares); err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
-// Freeze toggles the container's freezer cgroup depending on the state
-// provided
-func (m *Manager) Freeze(state configs.FreezerState) error {
-	d, err := getCgroupData(m.Cgroups, 0)
-	if err != nil {
-		return err
-	}
-	dir, err := d.path("freezer")
-	if err != nil {
-		return err
-	}
-	prevState := m.Cgroups.Resources.Freezer
-	m.Cgroups.Resources.Freezer = state
-	freezer, err := subsystems.Get("freezer")
-	if err != nil {
-		return err
-	}
-	err = freezer.Set(dir, m.Cgroups)
-	if err != nil {
-		m.Cgroups.Resources.Freezer = prevState
-		return err
-	}
-	return nil
-}
-
-func (m *Manager) GetPids() ([]int, error) {
-	dir, err := getCgroupPath(m.Cgroups)
-	if err != nil {
-		return nil, err
-	}
-	return cgroups.GetPids(dir)
-}
-
-func (m *Manager) GetAllPids() ([]int, error) {
-	dir, err := getCgroupPath(m.Cgroups)
-	if err != nil {
-		return nil, err
-	}
-	return cgroups.GetAllPids(dir)
-}
-
-func getCgroupPath(c *configs.Cgroup) (string, error) {
-	d, err := getCgroupData(c, 0)
-	if err != nil {
-		return "", err
-	}
-
-	return d.path("devices")
-}
-
-func getCgroupData(c *configs.Cgroup, pid int) (*cgroupData, error) {
-	root, err := getCgroupRoot()
-	if err != nil {
-		return nil, err
-	}
-
-	if (c.Name != "" || c.Parent != "") && c.Path != "" {
-		return nil, fmt.Errorf("cgroup: either Path or Name and Parent should be used")
-	}
-
-	// XXX: Do not remove this code. Path safety is important! -- cyphar
-	cgPath := libcontainerUtils.CleanPath(c.Path)
-	cgParent := libcontainerUtils.CleanPath(c.Parent)
-	cgName := libcontainerUtils.CleanPath(c.Name)
-
-	innerPath := cgPath
-	if innerPath == "" {
-		innerPath = filepath.Join(cgParent, cgName)
-	}
-
-	return &cgroupData{
-		root:      root,
-		innerPath: innerPath,
-		config:    c,
-		pid:       pid,
-	}, nil
-}
-
-func (raw *cgroupData) parentPath(subsystem, mountpoint, root string) (string, error) {
-	// Use GetThisCgroupDir instead of GetInitCgroupDir, because the creating
-	// process could in container and shared pid namespace with host, and
-	// /proc/1/cgroup could point to whole other world of cgroups.
-	initPath, err := cgroups.GetThisCgroupDir(subsystem)
-	if err != nil {
-		return "", err
-	}
-	// This is needed for nested containers, because in /proc/self/cgroup we
-	// see pathes from host, which don't exist in container.
-	relDir, err := filepath.Rel(root, initPath)
-	if err != nil {
-		return "", err
-	}
-	return filepath.Join(mountpoint, relDir), nil
-}
-
-func (raw *cgroupData) path(subsystem string) (string, error) {
-	mnt, root, err := cgroups.FindCgroupMountpointAndRoot(subsystem)
-	// If we didn't mount the subsystem, there is no point we make the path.
-	if err != nil {
-		return "", err
-	}
-
-	// If the cgroup name/path is absolute do not look relative to the cgroup of the init process.
-	if filepath.IsAbs(raw.innerPath) {
-		// Sometimes subsystems can be mounted togethger as 'cpu,cpuacct'.
-		return filepath.Join(raw.root, filepath.Base(mnt), raw.innerPath), nil
-	}
-
-	parentPath, err := raw.parentPath(subsystem, mnt, root)
-	if err != nil {
-		return "", err
-	}
-
-	return filepath.Join(parentPath, raw.innerPath), nil
-}
-
-func (raw *cgroupData) join(subsystem string) (string, error) {
-	path, err := raw.path(subsystem)
-	if err != nil {
-		return "", err
-	}
-	if err := os.MkdirAll(path, 0755); err != nil {
-		return "", err
-	}
-	if err := writeFile(path, CgroupProcesses, strconv.Itoa(raw.pid)); err != nil {
-		return "", err
-	}
-	return path, nil
-}
-
-func writeFile(dir, file, data string) error {
-	// Normally dir should not be empty, one case is that cgroup subsystem
-	// is not mounted, we will get empty dir, and we want it fail here.
-	if dir == "" {
-		return fmt.Errorf("no such directory for %s", file)
-	}
-	if err := ioutil.WriteFile(filepath.Join(dir, file), []byte(data), 0700); err != nil {
-		return fmt.Errorf("failed to write %v to %v: %v", data, file, err)
-	}
-	return nil
-}
-
-func readFile(dir, file string) (string, error) {
-	data, err := ioutil.ReadFile(filepath.Join(dir, file))
-	return string(data), err
-}
-
-func removePath(p string, err error) error {
-	if err != nil {
-		return err
-	}
-	if p != "" {
-		return os.RemoveAll(p)
-	}
-	return nil
-}
-
-func CheckCpushares(path string, c int64) error {
-	var cpuShares int64
-
-	if c == 0 {
-		return nil
-	}
-
-	fd, err := os.Open(filepath.Join(path, "cpu.shares"))
-	if err != nil {
-		return err
-	}
-	defer fd.Close()
-
-	_, err = fmt.Fscanf(fd, "%d", &cpuShares)
-	if err != nil && err != io.EOF {
-		return err
-	}
-
-	if c > cpuShares {
-		return fmt.Errorf("The maximum allowed cpu-shares is %d", cpuShares)
-	} else if c < cpuShares {
-		return fmt.Errorf("The minimum allowed cpu-shares is %d", cpuShares)
-	}
-
-	return nil
-}

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

@@ -1,237 +0,0 @@
-// +build linux
-
-package fs
-
-import (
-	"bufio"
-	"fmt"
-	"os"
-	"path/filepath"
-	"strconv"
-	"strings"
-
-	"github.com/opencontainers/runc/libcontainer/cgroups"
-	"github.com/opencontainers/runc/libcontainer/configs"
-)
-
-type BlkioGroup struct {
-}
-
-func (s *BlkioGroup) Name() string {
-	return "blkio"
-}
-
-func (s *BlkioGroup) Apply(d *cgroupData) error {
-	_, err := d.join("blkio")
-	if err != nil && !cgroups.IsNotFound(err) {
-		return err
-	}
-	return nil
-}
-
-func (s *BlkioGroup) Set(path string, cgroup *configs.Cgroup) error {
-	if cgroup.Resources.BlkioWeight != 0 {
-		if err := writeFile(path, "blkio.weight", strconv.FormatUint(uint64(cgroup.Resources.BlkioWeight), 10)); err != nil {
-			return err
-		}
-	}
-
-	if cgroup.Resources.BlkioLeafWeight != 0 {
-		if err := writeFile(path, "blkio.leaf_weight", strconv.FormatUint(uint64(cgroup.Resources.BlkioLeafWeight), 10)); err != nil {
-			return err
-		}
-	}
-	for _, wd := range cgroup.Resources.BlkioWeightDevice {
-		if err := writeFile(path, "blkio.weight_device", wd.WeightString()); err != nil {
-			return err
-		}
-		if err := writeFile(path, "blkio.leaf_weight_device", wd.LeafWeightString()); err != nil {
-			return err
-		}
-	}
-	for _, td := range cgroup.Resources.BlkioThrottleReadBpsDevice {
-		if err := writeFile(path, "blkio.throttle.read_bps_device", td.String()); err != nil {
-			return err
-		}
-	}
-	for _, td := range cgroup.Resources.BlkioThrottleWriteBpsDevice {
-		if err := writeFile(path, "blkio.throttle.write_bps_device", td.String()); err != nil {
-			return err
-		}
-	}
-	for _, td := range cgroup.Resources.BlkioThrottleReadIOPSDevice {
-		if err := writeFile(path, "blkio.throttle.read_iops_device", td.String()); err != nil {
-			return err
-		}
-	}
-	for _, td := range cgroup.Resources.BlkioThrottleWriteIOPSDevice {
-		if err := writeFile(path, "blkio.throttle.write_iops_device", td.String()); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (s *BlkioGroup) Remove(d *cgroupData) error {
-	return removePath(d.path("blkio"))
-}
-
-/*
-examples:
-
-    blkio.sectors
-    8:0 6792
-
-    blkio.io_service_bytes
-    8:0 Read 1282048
-    8:0 Write 2195456
-    8:0 Sync 2195456
-    8:0 Async 1282048
-    8:0 Total 3477504
-    Total 3477504
-
-    blkio.io_serviced
-    8:0 Read 124
-    8:0 Write 104
-    8:0 Sync 104
-    8:0 Async 124
-    8:0 Total 228
-    Total 228
-
-    blkio.io_queued
-    8:0 Read 0
-    8:0 Write 0
-    8:0 Sync 0
-    8:0 Async 0
-    8:0 Total 0
-    Total 0
-*/
-
-func splitBlkioStatLine(r rune) bool {
-	return r == ' ' || r == ':'
-}
-
-func getBlkioStat(path string) ([]cgroups.BlkioStatEntry, error) {
-	var blkioStats []cgroups.BlkioStatEntry
-	f, err := os.Open(path)
-	if err != nil {
-		if os.IsNotExist(err) {
-			return blkioStats, nil
-		}
-		return nil, err
-	}
-	defer f.Close()
-
-	sc := bufio.NewScanner(f)
-	for sc.Scan() {
-		// format: dev type amount
-		fields := strings.FieldsFunc(sc.Text(), splitBlkioStatLine)
-		if len(fields) < 3 {
-			if len(fields) == 2 && fields[0] == "Total" {
-				// skip total line
-				continue
-			} else {
-				return nil, fmt.Errorf("Invalid line found while parsing %s: %s", path, sc.Text())
-			}
-		}
-
-		v, err := strconv.ParseUint(fields[0], 10, 64)
-		if err != nil {
-			return nil, err
-		}
-		major := v
-
-		v, err = strconv.ParseUint(fields[1], 10, 64)
-		if err != nil {
-			return nil, err
-		}
-		minor := v
-
-		op := ""
-		valueField := 2
-		if len(fields) == 4 {
-			op = fields[2]
-			valueField = 3
-		}
-		v, err = strconv.ParseUint(fields[valueField], 10, 64)
-		if err != nil {
-			return nil, err
-		}
-		blkioStats = append(blkioStats, cgroups.BlkioStatEntry{Major: major, Minor: minor, Op: op, Value: v})
-	}
-
-	return blkioStats, nil
-}
-
-func (s *BlkioGroup) GetStats(path string, stats *cgroups.Stats) error {
-	// Try to read CFQ stats available on all CFQ enabled kernels first
-	if blkioStats, err := getBlkioStat(filepath.Join(path, "blkio.io_serviced_recursive")); err == nil && blkioStats != nil {
-		return getCFQStats(path, stats)
-	}
-	return getStats(path, stats) // Use generic stats as fallback
-}
-
-func getCFQStats(path string, stats *cgroups.Stats) error {
-	var blkioStats []cgroups.BlkioStatEntry
-	var err error
-
-	if blkioStats, err = getBlkioStat(filepath.Join(path, "blkio.sectors_recursive")); err != nil {
-		return err
-	}
-	stats.BlkioStats.SectorsRecursive = blkioStats
-
-	if blkioStats, err = getBlkioStat(filepath.Join(path, "blkio.io_service_bytes_recursive")); err != nil {
-		return err
-	}
-	stats.BlkioStats.IoServiceBytesRecursive = blkioStats
-
-	if blkioStats, err = getBlkioStat(filepath.Join(path, "blkio.io_serviced_recursive")); err != nil {
-		return err
-	}
-	stats.BlkioStats.IoServicedRecursive = blkioStats
-
-	if blkioStats, err = getBlkioStat(filepath.Join(path, "blkio.io_queued_recursive")); err != nil {
-		return err
-	}
-	stats.BlkioStats.IoQueuedRecursive = blkioStats
-
-	if blkioStats, err = getBlkioStat(filepath.Join(path, "blkio.io_service_time_recursive")); err != nil {
-		return err
-	}
-	stats.BlkioStats.IoServiceTimeRecursive = blkioStats
-
-	if blkioStats, err = getBlkioStat(filepath.Join(path, "blkio.io_wait_time_recursive")); err != nil {
-		return err
-	}
-	stats.BlkioStats.IoWaitTimeRecursive = blkioStats
-
-	if blkioStats, err = getBlkioStat(filepath.Join(path, "blkio.io_merged_recursive")); err != nil {
-		return err
-	}
-	stats.BlkioStats.IoMergedRecursive = blkioStats
-
-	if blkioStats, err = getBlkioStat(filepath.Join(path, "blkio.time_recursive")); err != nil {
-		return err
-	}
-	stats.BlkioStats.IoTimeRecursive = blkioStats
-
-	return nil
-}
-
-func getStats(path string, stats *cgroups.Stats) error {
-	var blkioStats []cgroups.BlkioStatEntry
-	var err error
-
-	if blkioStats, err = getBlkioStat(filepath.Join(path, "blkio.throttle.io_service_bytes")); err != nil {
-		return err
-	}
-	stats.BlkioStats.IoServiceBytesRecursive = blkioStats
-
-	if blkioStats, err = getBlkioStat(filepath.Join(path, "blkio.throttle.io_serviced")); err != nil {
-		return err
-	}
-	stats.BlkioStats.IoServicedRecursive = blkioStats
-
-	return nil
-}

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

@@ -1,94 +0,0 @@
-// +build linux
-
-package fs
-
-import (
-	"bufio"
-	"os"
-	"path/filepath"
-	"strconv"
-
-	"github.com/opencontainers/runc/libcontainer/cgroups"
-	"github.com/opencontainers/runc/libcontainer/configs"
-)
-
-type CpuGroup struct {
-}
-
-func (s *CpuGroup) Name() string {
-	return "cpu"
-}
-
-func (s *CpuGroup) Apply(d *cgroupData) error {
-	// We always want to join the cpu group, to allow fair cpu scheduling
-	// on a container basis
-	_, err := d.join("cpu")
-	if err != nil && !cgroups.IsNotFound(err) {
-		return err
-	}
-	return nil
-}
-
-func (s *CpuGroup) Set(path string, cgroup *configs.Cgroup) error {
-	if cgroup.Resources.CpuShares != 0 {
-		if err := writeFile(path, "cpu.shares", strconv.FormatInt(cgroup.Resources.CpuShares, 10)); err != nil {
-			return err
-		}
-	}
-	if cgroup.Resources.CpuPeriod != 0 {
-		if err := writeFile(path, "cpu.cfs_period_us", strconv.FormatInt(cgroup.Resources.CpuPeriod, 10)); err != nil {
-			return err
-		}
-	}
-	if cgroup.Resources.CpuQuota != 0 {
-		if err := writeFile(path, "cpu.cfs_quota_us", strconv.FormatInt(cgroup.Resources.CpuQuota, 10)); err != nil {
-			return err
-		}
-	}
-	if cgroup.Resources.CpuRtPeriod != 0 {
-		if err := writeFile(path, "cpu.rt_period_us", strconv.FormatInt(cgroup.Resources.CpuRtPeriod, 10)); err != nil {
-			return err
-		}
-	}
-	if cgroup.Resources.CpuRtRuntime != 0 {
-		if err := writeFile(path, "cpu.rt_runtime_us", strconv.FormatInt(cgroup.Resources.CpuRtRuntime, 10)); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (s *CpuGroup) Remove(d *cgroupData) error {
-	return removePath(d.path("cpu"))
-}
-
-func (s *CpuGroup) GetStats(path string, stats *cgroups.Stats) error {
-	f, err := os.Open(filepath.Join(path, "cpu.stat"))
-	if err != nil {
-		if os.IsNotExist(err) {
-			return nil
-		}
-		return err
-	}
-	defer f.Close()
-
-	sc := bufio.NewScanner(f)
-	for sc.Scan() {
-		t, v, err := getCgroupParamKeyValue(sc.Text())
-		if err != nil {
-			return err
-		}
-		switch t {
-		case "nr_periods":
-			stats.CpuStats.ThrottlingData.Periods = v
-
-		case "nr_throttled":
-			stats.CpuStats.ThrottlingData.ThrottledPeriods = v
-
-		case "throttled_time":
-			stats.CpuStats.ThrottlingData.ThrottledTime = v
-		}
-	}
-	return nil
-}

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

@@ -1,121 +0,0 @@
-// +build linux
-
-package fs
-
-import (
-	"fmt"
-	"io/ioutil"
-	"path/filepath"
-	"strconv"
-	"strings"
-
-	"github.com/opencontainers/runc/libcontainer/cgroups"
-	"github.com/opencontainers/runc/libcontainer/configs"
-	"github.com/opencontainers/runc/libcontainer/system"
-)
-
-const (
-	cgroupCpuacctStat   = "cpuacct.stat"
-	nanosecondsInSecond = 1000000000
-)
-
-var clockTicks = uint64(system.GetClockTicks())
-
-type CpuacctGroup struct {
-}
-
-func (s *CpuacctGroup) Name() string {
-	return "cpuacct"
-}
-
-func (s *CpuacctGroup) Apply(d *cgroupData) error {
-	// we just want to join this group even though we don't set anything
-	if _, err := d.join("cpuacct"); err != nil && !cgroups.IsNotFound(err) {
-		return err
-	}
-
-	return nil
-}
-
-func (s *CpuacctGroup) Set(path string, cgroup *configs.Cgroup) error {
-	return nil
-}
-
-func (s *CpuacctGroup) Remove(d *cgroupData) error {
-	return removePath(d.path("cpuacct"))
-}
-
-func (s *CpuacctGroup) GetStats(path string, stats *cgroups.Stats) error {
-	userModeUsage, kernelModeUsage, err := getCpuUsageBreakdown(path)
-	if err != nil {
-		return err
-	}
-
-	totalUsage, err := getCgroupParamUint(path, "cpuacct.usage")
-	if err != nil {
-		return err
-	}
-
-	percpuUsage, err := getPercpuUsage(path)
-	if err != nil {
-		return err
-	}
-
-	stats.CpuStats.CpuUsage.TotalUsage = totalUsage
-	stats.CpuStats.CpuUsage.PercpuUsage = percpuUsage
-	stats.CpuStats.CpuUsage.UsageInUsermode = userModeUsage
-	stats.CpuStats.CpuUsage.UsageInKernelmode = kernelModeUsage
-	return nil
-}
-
-// Returns user and kernel usage breakdown in nanoseconds.
-func getCpuUsageBreakdown(path string) (uint64, uint64, error) {
-	userModeUsage := uint64(0)
-	kernelModeUsage := uint64(0)
-	const (
-		userField   = "user"
-		systemField = "system"
-	)
-
-	// Expected format:
-	// user <usage in ticks>
-	// system <usage in ticks>
-	data, err := ioutil.ReadFile(filepath.Join(path, cgroupCpuacctStat))
-	if err != nil {
-		return 0, 0, err
-	}
-	fields := strings.Fields(string(data))
-	if len(fields) != 4 {
-		return 0, 0, fmt.Errorf("failure - %s is expected to have 4 fields", filepath.Join(path, cgroupCpuacctStat))
-	}
-	if fields[0] != userField {
-		return 0, 0, fmt.Errorf("unexpected field %q in %q, expected %q", fields[0], cgroupCpuacctStat, userField)
-	}
-	if fields[2] != systemField {
-		return 0, 0, fmt.Errorf("unexpected field %q in %q, expected %q", fields[2], cgroupCpuacctStat, systemField)
-	}
-	if userModeUsage, err = strconv.ParseUint(fields[1], 10, 64); err != nil {
-		return 0, 0, err
-	}
-	if kernelModeUsage, err = strconv.ParseUint(fields[3], 10, 64); err != nil {
-		return 0, 0, err
-	}
-
-	return (userModeUsage * nanosecondsInSecond) / clockTicks, (kernelModeUsage * nanosecondsInSecond) / clockTicks, nil
-}
-
-func getPercpuUsage(path string) ([]uint64, error) {
-	percpuUsage := []uint64{}
-	data, err := ioutil.ReadFile(filepath.Join(path, "cpuacct.usage_percpu"))
-	if err != nil {
-		return percpuUsage, err
-	}
-	for _, value := range strings.Fields(string(data)) {
-		value, err := strconv.ParseUint(value, 10, 64)
-		if err != nil {
-			return percpuUsage, fmt.Errorf("Unable to convert param value to uint64: %s", err)
-		}
-		percpuUsage = append(percpuUsage, value)
-	}
-	return percpuUsage, nil
-}

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

@@ -1,139 +0,0 @@
-// +build linux
-
-package fs
-
-import (
-	"bytes"
-	"fmt"
-	"io/ioutil"
-	"os"
-	"path/filepath"
-	"strconv"
-
-	"github.com/opencontainers/runc/libcontainer/cgroups"
-	"github.com/opencontainers/runc/libcontainer/configs"
-	libcontainerUtils "github.com/opencontainers/runc/libcontainer/utils"
-)
-
-type CpusetGroup struct {
-}
-
-func (s *CpusetGroup) Name() string {
-	return "cpuset"
-}
-
-func (s *CpusetGroup) Apply(d *cgroupData) error {
-	dir, err := d.path("cpuset")
-	if err != nil && !cgroups.IsNotFound(err) {
-		return err
-	}
-	return s.ApplyDir(dir, d.config, d.pid)
-}
-
-func (s *CpusetGroup) Set(path string, cgroup *configs.Cgroup) error {
-	if cgroup.Resources.CpusetCpus != "" {
-		if err := writeFile(path, "cpuset.cpus", cgroup.Resources.CpusetCpus); err != nil {
-			return err
-		}
-	}
-	if cgroup.Resources.CpusetMems != "" {
-		if err := writeFile(path, "cpuset.mems", cgroup.Resources.CpusetMems); err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
-func (s *CpusetGroup) Remove(d *cgroupData) error {
-	return removePath(d.path("cpuset"))
-}
-
-func (s *CpusetGroup) GetStats(path string, stats *cgroups.Stats) error {
-	return nil
-}
-
-func (s *CpusetGroup) ApplyDir(dir string, cgroup *configs.Cgroup, pid int) error {
-	// This might happen if we have no cpuset cgroup mounted.
-	// Just do nothing and don't fail.
-	if dir == "" {
-		return nil
-	}
-	root, err := getCgroupRoot()
-	if err != nil {
-		return err
-	}
-	if err := s.ensureParent(dir, root); err != nil {
-		return err
-	}
-	// because we are not using d.join we need to place the pid into the procs file
-	// unlike the other subsystems
-	if err := writeFile(dir, "cgroup.procs", strconv.Itoa(pid)); err != nil {
-		return err
-	}
-
-	return nil
-}
-
-func (s *CpusetGroup) getSubsystemSettings(parent string) (cpus []byte, mems []byte, err error) {
-	if cpus, err = ioutil.ReadFile(filepath.Join(parent, "cpuset.cpus")); err != nil {
-		return
-	}
-	if mems, err = ioutil.ReadFile(filepath.Join(parent, "cpuset.mems")); err != nil {
-		return
-	}
-	return cpus, mems, nil
-}
-
-// ensureParent makes sure that the parent directory of current is created
-// and populated with the proper cpus and mems files copied from
-// it's parent.
-func (s *CpusetGroup) ensureParent(current, root string) error {
-	parent := filepath.Dir(current)
-	if libcontainerUtils.CleanPath(parent) == root {
-		return nil
-	}
-	// Avoid infinite recursion.
-	if parent == current {
-		return fmt.Errorf("cpuset: cgroup parent path outside cgroup root")
-	}
-	if err := s.ensureParent(parent, root); err != nil {
-		return err
-	}
-	if err := os.MkdirAll(current, 0755); err != nil {
-		return err
-	}
-	return s.copyIfNeeded(current, parent)
-}
-
-// copyIfNeeded copies the cpuset.cpus and cpuset.mems from the parent
-// directory to the current directory if the file's contents are 0
-func (s *CpusetGroup) copyIfNeeded(current, parent string) error {
-	var (
-		err                      error
-		currentCpus, currentMems []byte
-		parentCpus, parentMems   []byte
-	)
-
-	if currentCpus, currentMems, err = s.getSubsystemSettings(current); err != nil {
-		return err
-	}
-	if parentCpus, parentMems, err = s.getSubsystemSettings(parent); err != nil {
-		return err
-	}
-
-	if s.isEmpty(currentCpus) {
-		if err := writeFile(current, "cpuset.cpus", string(parentCpus)); err != nil {
-			return err
-		}
-	}
-	if s.isEmpty(currentMems) {
-		if err := writeFile(current, "cpuset.mems", string(parentMems)); err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
-func (s *CpusetGroup) isEmpty(b []byte) bool {
-	return len(bytes.Trim(b, "\n")) == 0
-}

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

@@ -1,78 +0,0 @@
-// +build linux
-
-package fs
-
-import (
-	"github.com/opencontainers/runc/libcontainer/cgroups"
-	"github.com/opencontainers/runc/libcontainer/configs"
-	"github.com/opencontainers/runc/libcontainer/system"
-)
-
-type DevicesGroup struct {
-}
-
-func (s *DevicesGroup) Name() string {
-	return "devices"
-}
-
-func (s *DevicesGroup) Apply(d *cgroupData) error {
-	_, err := d.join("devices")
-	if err != nil {
-		// We will return error even it's `not found` error, devices
-		// cgroup is hard requirement for container's security.
-		return err
-	}
-	return nil
-}
-
-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 {
-			file := "devices.deny"
-			if dev.Allow {
-				file = "devices.allow"
-			}
-			if err := writeFile(path, file, dev.CgroupString()); err != nil {
-				return err
-			}
-		}
-		return nil
-	}
-	if !cgroup.Resources.AllowAllDevices {
-		if err := writeFile(path, "devices.deny", "a"); err != nil {
-			return err
-		}
-
-		for _, dev := range cgroup.Resources.AllowedDevices {
-			if err := writeFile(path, "devices.allow", dev.CgroupString()); err != nil {
-				return err
-			}
-		}
-		return nil
-	}
-
-	if err := writeFile(path, "devices.allow", "a"); err != nil {
-		return err
-	}
-
-	for _, dev := range cgroup.Resources.DeniedDevices {
-		if err := writeFile(path, "devices.deny", dev.CgroupString()); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (s *DevicesGroup) Remove(d *cgroupData) error {
-	return removePath(d.path("devices"))
-}
-
-func (s *DevicesGroup) GetStats(path string, stats *cgroups.Stats) error {
-	return nil
-}

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

@@ -1,61 +0,0 @@
-// +build linux
-
-package fs
-
-import (
-	"fmt"
-	"strings"
-	"time"
-
-	"github.com/opencontainers/runc/libcontainer/cgroups"
-	"github.com/opencontainers/runc/libcontainer/configs"
-)
-
-type FreezerGroup struct {
-}
-
-func (s *FreezerGroup) Name() string {
-	return "freezer"
-}
-
-func (s *FreezerGroup) Apply(d *cgroupData) error {
-	_, err := d.join("freezer")
-	if err != nil && !cgroups.IsNotFound(err) {
-		return err
-	}
-	return nil
-}
-
-func (s *FreezerGroup) Set(path string, cgroup *configs.Cgroup) error {
-	switch cgroup.Resources.Freezer {
-	case configs.Frozen, configs.Thawed:
-		if err := writeFile(path, "freezer.state", string(cgroup.Resources.Freezer)); err != nil {
-			return err
-		}
-
-		for {
-			state, err := readFile(path, "freezer.state")
-			if err != nil {
-				return err
-			}
-			if strings.TrimSpace(state) == string(cgroup.Resources.Freezer) {
-				break
-			}
-			time.Sleep(1 * time.Millisecond)
-		}
-	case configs.Undefined:
-		return nil
-	default:
-		return fmt.Errorf("Invalid argument '%s' to freezer.state", string(cgroup.Resources.Freezer))
-	}
-
-	return nil
-}
-
-func (s *FreezerGroup) Remove(d *cgroupData) error {
-	return removePath(d.path("freezer"))
-}
-
-func (s *FreezerGroup) GetStats(path string, stats *cgroups.Stats) error {
-	return nil
-}

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

@@ -1,3 +0,0 @@
-// +build !linux
-
-package fs

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

@@ -1,71 +0,0 @@
-// +build linux
-
-package fs
-
-import (
-	"fmt"
-	"strconv"
-	"strings"
-
-	"github.com/opencontainers/runc/libcontainer/cgroups"
-	"github.com/opencontainers/runc/libcontainer/configs"
-)
-
-type HugetlbGroup struct {
-}
-
-func (s *HugetlbGroup) Name() string {
-	return "hugetlb"
-}
-
-func (s *HugetlbGroup) Apply(d *cgroupData) error {
-	_, err := d.join("hugetlb")
-	if err != nil && !cgroups.IsNotFound(err) {
-		return err
-	}
-	return nil
-}
-
-func (s *HugetlbGroup) Set(path string, cgroup *configs.Cgroup) error {
-	for _, hugetlb := range cgroup.Resources.HugetlbLimit {
-		if err := writeFile(path, strings.Join([]string{"hugetlb", hugetlb.Pagesize, "limit_in_bytes"}, "."), strconv.FormatUint(hugetlb.Limit, 10)); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (s *HugetlbGroup) Remove(d *cgroupData) error {
-	return removePath(d.path("hugetlb"))
-}
-
-func (s *HugetlbGroup) GetStats(path string, stats *cgroups.Stats) error {
-	hugetlbStats := cgroups.HugetlbStats{}
-	for _, pageSize := range HugePageSizes {
-		usage := strings.Join([]string{"hugetlb", pageSize, "usage_in_bytes"}, ".")
-		value, err := getCgroupParamUint(path, usage)
-		if err != nil {
-			return fmt.Errorf("failed to parse %s - %v", usage, err)
-		}
-		hugetlbStats.Usage = value
-
-		maxUsage := strings.Join([]string{"hugetlb", pageSize, "max_usage_in_bytes"}, ".")
-		value, err = getCgroupParamUint(path, maxUsage)
-		if err != nil {
-			return fmt.Errorf("failed to parse %s - %v", maxUsage, err)
-		}
-		hugetlbStats.MaxUsage = value
-
-		failcnt := strings.Join([]string{"hugetlb", pageSize, "failcnt"}, ".")
-		value, err = getCgroupParamUint(path, failcnt)
-		if err != nil {
-			return fmt.Errorf("failed to parse %s - %v", failcnt, err)
-		}
-		hugetlbStats.Failcnt = value
-
-		stats.HugetlbStats[pageSize] = hugetlbStats
-	}
-
-	return nil
-}

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

@@ -1,290 +0,0 @@
-// +build linux
-
-package fs
-
-import (
-	"bufio"
-	"fmt"
-	"math"
-	"os"
-	"path/filepath"
-	"strconv"
-	"strings"
-
-	"github.com/opencontainers/runc/libcontainer/cgroups"
-	"github.com/opencontainers/runc/libcontainer/configs"
-	"github.com/opencontainers/runc/libcontainer/system"
-)
-
-type MemoryGroup struct {
-}
-
-func (s *MemoryGroup) Name() string {
-	return "memory"
-}
-
-func (s *MemoryGroup) Apply(d *cgroupData) (err error) {
-	path, err := d.path("memory")
-	if err != nil && !cgroups.IsNotFound(err) {
-		return err
-	}
-	if memoryAssigned(d.config) {
-		if path != "" {
-			if err := os.MkdirAll(path, 0755); err != nil {
-				return err
-			}
-		}
-		// We have to set kernel memory here, as we can't change it once
-		// processes have been attached to the cgroup.
-		if err := s.SetKernelMemory(path, d.config); err != nil {
-			return err
-		}
-	}
-
-	defer func() {
-		if err != nil {
-			os.RemoveAll(path)
-		}
-	}()
-
-	// We need to join memory cgroup after set memory limits, because
-	// kmem.limit_in_bytes can only be set when the cgroup is empty.
-	_, err = d.join("memory")
-	if err != nil && !cgroups.IsNotFound(err) {
-		return err
-	}
-	return nil
-}
-
-func (s *MemoryGroup) SetKernelMemory(path string, cgroup *configs.Cgroup) error {
-	// This has to be done separately because it has special
-	// constraints (it can only be initialized before setting up a
-	// hierarchy or adding a task to the cgroups. However, if
-	// sucessfully initialized, it can be updated anytime afterwards)
-	if cgroup.Resources.KernelMemory != 0 {
-		kmemInitialized := false
-		// Is kmem.limit_in_bytes already set?
-		kmemValue, err := getCgroupParamUint(path, "memory.kmem.limit_in_bytes")
-		if err != nil {
-			return err
-		}
-		switch system.GetLongBit() {
-		case 32:
-			kmemInitialized = uint32(kmemValue) != uint32(math.MaxUint32)
-		case 64:
-			kmemInitialized = kmemValue != uint64(math.MaxUint64)
-		}
-
-		if !kmemInitialized {
-			// If hierarchy is set, we can't change the limit
-			usesHierarchy, err := getCgroupParamUint(path, "memory.use_hierarchy")
-			if err != nil {
-				return err
-			}
-			if usesHierarchy != 0 {
-				return fmt.Errorf("cannot initialize kmem.limit_in_bytes if use_hierarchy is already set")
-			}
-
-			// If there's already tasks in the cgroup, we can't change the limit either
-			tasks, err := getCgroupParamString(path, "tasks")
-			if err != nil {
-				return err
-			}
-			if tasks != "" {
-				return fmt.Errorf("cannot initialize kmem.limit_in_bytes after task have joined this cgroup")
-			}
-		}
-
-		if err := writeFile(path, "memory.kmem.limit_in_bytes", strconv.FormatInt(cgroup.Resources.KernelMemory, 10)); err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
-func setMemoryAndSwap(path string, cgroup *configs.Cgroup) error {
-	// When memory and swap memory are both set, we need to handle the cases
-	// for updating container.
-	if cgroup.Resources.Memory != 0 && cgroup.Resources.MemorySwap > 0 {
-		memoryUsage, err := getMemoryData(path, "")
-		if err != nil {
-			return err
-		}
-
-		// When update memory limit, we should adapt the write sequence
-		// for memory and swap memory, so it won't fail because the new
-		// value and the old value don't fit kernel's validation.
-		if memoryUsage.Limit < uint64(cgroup.Resources.MemorySwap) {
-			if err := writeFile(path, "memory.memsw.limit_in_bytes", strconv.FormatInt(cgroup.Resources.MemorySwap, 10)); err != nil {
-				return err
-			}
-			if err := writeFile(path, "memory.limit_in_bytes", strconv.FormatInt(cgroup.Resources.Memory, 10)); err != nil {
-				return err
-			}
-		} else {
-			if err := writeFile(path, "memory.limit_in_bytes", strconv.FormatInt(cgroup.Resources.Memory, 10)); err != nil {
-				return err
-			}
-			if err := writeFile(path, "memory.memsw.limit_in_bytes", strconv.FormatInt(cgroup.Resources.MemorySwap, 10)); err != nil {
-				return err
-			}
-		}
-	} else {
-		if cgroup.Resources.Memory != 0 {
-			if err := writeFile(path, "memory.limit_in_bytes", strconv.FormatInt(cgroup.Resources.Memory, 10)); err != nil {
-				return err
-			}
-		}
-		if cgroup.Resources.MemorySwap > 0 {
-			if err := writeFile(path, "memory.memsw.limit_in_bytes", strconv.FormatInt(cgroup.Resources.MemorySwap, 10)); err != nil {
-				return err
-			}
-		}
-	}
-
-	return nil
-}
-
-func (s *MemoryGroup) Set(path string, cgroup *configs.Cgroup) error {
-	if err := setMemoryAndSwap(path, cgroup); err != nil {
-		return err
-	}
-
-	if err := s.SetKernelMemory(path, cgroup); err != nil {
-		return err
-	}
-
-	if cgroup.Resources.MemoryReservation != 0 {
-		if err := writeFile(path, "memory.soft_limit_in_bytes", strconv.FormatInt(cgroup.Resources.MemoryReservation, 10)); err != nil {
-			return err
-		}
-	}
-	if cgroup.Resources.KernelMemoryTCP != 0 {
-		if err := writeFile(path, "memory.kmem.tcp.limit_in_bytes", strconv.FormatInt(cgroup.Resources.KernelMemoryTCP, 10)); err != nil {
-			return err
-		}
-	}
-	if cgroup.Resources.OomKillDisable {
-		if err := writeFile(path, "memory.oom_control", "1"); err != nil {
-			return err
-		}
-	}
-	if cgroup.Resources.MemorySwappiness == nil || int64(*cgroup.Resources.MemorySwappiness) == -1 {
-		return nil
-	} else if int64(*cgroup.Resources.MemorySwappiness) >= 0 && int64(*cgroup.Resources.MemorySwappiness) <= 100 {
-		if err := writeFile(path, "memory.swappiness", strconv.FormatInt(*cgroup.Resources.MemorySwappiness, 10)); err != nil {
-			return err
-		}
-	} else {
-		return fmt.Errorf("invalid value:%d. valid memory swappiness range is 0-100", int64(*cgroup.Resources.MemorySwappiness))
-	}
-
-	return nil
-}
-
-func (s *MemoryGroup) Remove(d *cgroupData) error {
-	return removePath(d.path("memory"))
-}
-
-func (s *MemoryGroup) GetStats(path string, stats *cgroups.Stats) error {
-	// Set stats from memory.stat.
-	statsFile, err := os.Open(filepath.Join(path, "memory.stat"))
-	if err != nil {
-		if os.IsNotExist(err) {
-			return nil
-		}
-		return err
-	}
-	defer statsFile.Close()
-
-	sc := bufio.NewScanner(statsFile)
-	for sc.Scan() {
-		t, v, err := getCgroupParamKeyValue(sc.Text())
-		if err != nil {
-			return fmt.Errorf("failed to parse memory.stat (%q) - %v", sc.Text(), err)
-		}
-		stats.MemoryStats.Stats[t] = v
-	}
-	stats.MemoryStats.Cache = stats.MemoryStats.Stats["cache"]
-
-	memoryUsage, err := getMemoryData(path, "")
-	if err != nil {
-		return err
-	}
-	stats.MemoryStats.Usage = memoryUsage
-	swapUsage, err := getMemoryData(path, "memsw")
-	if err != nil {
-		return err
-	}
-	stats.MemoryStats.SwapUsage = swapUsage
-	kernelUsage, err := getMemoryData(path, "kmem")
-	if err != nil {
-		return err
-	}
-	stats.MemoryStats.KernelUsage = kernelUsage
-	kernelTCPUsage, err := getMemoryData(path, "kmem.tcp")
-	if err != nil {
-		return err
-	}
-	stats.MemoryStats.KernelTCPUsage = kernelTCPUsage
-
-	return nil
-}
-
-func memoryAssigned(cgroup *configs.Cgroup) bool {
-	return cgroup.Resources.Memory != 0 ||
-		cgroup.Resources.MemoryReservation != 0 ||
-		cgroup.Resources.MemorySwap > 0 ||
-		cgroup.Resources.KernelMemory > 0 ||
-		cgroup.Resources.KernelMemoryTCP > 0 ||
-		cgroup.Resources.OomKillDisable ||
-		(cgroup.Resources.MemorySwappiness != nil && *cgroup.Resources.MemorySwappiness != -1)
-}
-
-func getMemoryData(path, name string) (cgroups.MemoryData, error) {
-	memoryData := cgroups.MemoryData{}
-
-	moduleName := "memory"
-	if name != "" {
-		moduleName = strings.Join([]string{"memory", name}, ".")
-	}
-	usage := strings.Join([]string{moduleName, "usage_in_bytes"}, ".")
-	maxUsage := strings.Join([]string{moduleName, "max_usage_in_bytes"}, ".")
-	failcnt := strings.Join([]string{moduleName, "failcnt"}, ".")
-	limit := strings.Join([]string{moduleName, "limit_in_bytes"}, ".")
-
-	value, err := getCgroupParamUint(path, usage)
-	if err != nil {
-		if moduleName != "memory" && os.IsNotExist(err) {
-			return cgroups.MemoryData{}, nil
-		}
-		return cgroups.MemoryData{}, fmt.Errorf("failed to parse %s - %v", usage, err)
-	}
-	memoryData.Usage = value
-	value, err = getCgroupParamUint(path, maxUsage)
-	if err != nil {
-		if moduleName != "memory" && os.IsNotExist(err) {
-			return cgroups.MemoryData{}, nil
-		}
-		return cgroups.MemoryData{}, fmt.Errorf("failed to parse %s - %v", maxUsage, err)
-	}
-	memoryData.MaxUsage = value
-	value, err = getCgroupParamUint(path, failcnt)
-	if err != nil {
-		if moduleName != "memory" && os.IsNotExist(err) {
-			return cgroups.MemoryData{}, nil
-		}
-		return cgroups.MemoryData{}, fmt.Errorf("failed to parse %s - %v", failcnt, err)
-	}
-	memoryData.Failcnt = value
-	value, err = getCgroupParamUint(path, limit)
-	if err != nil {
-		if moduleName != "memory" && os.IsNotExist(err) {
-			return cgroups.MemoryData{}, nil
-		}
-		return cgroups.MemoryData{}, fmt.Errorf("failed to parse %s - %v", limit, err)
-	}
-	memoryData.Limit = value
-
-	return memoryData, nil
-}

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

@@ -1,40 +0,0 @@
-// +build linux
-
-package fs
-
-import (
-	"github.com/opencontainers/runc/libcontainer/cgroups"
-	"github.com/opencontainers/runc/libcontainer/configs"
-)
-
-type NameGroup struct {
-	GroupName string
-	Join      bool
-}
-
-func (s *NameGroup) Name() string {
-	return s.GroupName
-}
-
-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
-}
-
-func (s *NameGroup) Set(path string, cgroup *configs.Cgroup) error {
-	return nil
-}
-
-func (s *NameGroup) Remove(d *cgroupData) error {
-	if s.Join {
-		removePath(d.path(s.GroupName))
-	}
-	return nil
-}
-
-func (s *NameGroup) GetStats(path string, stats *cgroups.Stats) error {
-	return nil
-}

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

@@ -1,41 +0,0 @@
-// +build linux
-
-package fs
-
-import (
-	"github.com/opencontainers/runc/libcontainer/cgroups"
-	"github.com/opencontainers/runc/libcontainer/configs"
-)
-
-type NetClsGroup struct {
-}
-
-func (s *NetClsGroup) Name() string {
-	return "net_cls"
-}
-
-func (s *NetClsGroup) Apply(d *cgroupData) error {
-	_, err := d.join("net_cls")
-	if err != nil && !cgroups.IsNotFound(err) {
-		return err
-	}
-	return nil
-}
-
-func (s *NetClsGroup) Set(path string, cgroup *configs.Cgroup) error {
-	if cgroup.Resources.NetClsClassid != "" {
-		if err := writeFile(path, "net_cls.classid", cgroup.Resources.NetClsClassid); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (s *NetClsGroup) Remove(d *cgroupData) error {
-	return removePath(d.path("net_cls"))
-}
-
-func (s *NetClsGroup) GetStats(path string, stats *cgroups.Stats) error {
-	return nil
-}

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

@@ -1,41 +0,0 @@
-// +build linux
-
-package fs
-
-import (
-	"github.com/opencontainers/runc/libcontainer/cgroups"
-	"github.com/opencontainers/runc/libcontainer/configs"
-)
-
-type NetPrioGroup struct {
-}
-
-func (s *NetPrioGroup) Name() string {
-	return "net_prio"
-}
-
-func (s *NetPrioGroup) Apply(d *cgroupData) error {
-	_, err := d.join("net_prio")
-	if err != nil && !cgroups.IsNotFound(err) {
-		return err
-	}
-	return nil
-}
-
-func (s *NetPrioGroup) Set(path string, cgroup *configs.Cgroup) error {
-	for _, prioMap := range cgroup.Resources.NetPrioIfpriomap {
-		if err := writeFile(path, "net_prio.ifpriomap", prioMap.CgroupString()); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (s *NetPrioGroup) Remove(d *cgroupData) error {
-	return removePath(d.path("net_prio"))
-}
-
-func (s *NetPrioGroup) GetStats(path string, stats *cgroups.Stats) error {
-	return nil
-}

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

@@ -1,35 +0,0 @@
-// +build linux
-
-package fs
-
-import (
-	"github.com/opencontainers/runc/libcontainer/cgroups"
-	"github.com/opencontainers/runc/libcontainer/configs"
-)
-
-type PerfEventGroup struct {
-}
-
-func (s *PerfEventGroup) Name() string {
-	return "perf_event"
-}
-
-func (s *PerfEventGroup) Apply(d *cgroupData) error {
-	// we just want to join this group even though we don't set anything
-	if _, err := d.join("perf_event"); err != nil && !cgroups.IsNotFound(err) {
-		return err
-	}
-	return nil
-}
-
-func (s *PerfEventGroup) Set(path string, cgroup *configs.Cgroup) error {
-	return nil
-}
-
-func (s *PerfEventGroup) Remove(d *cgroupData) error {
-	return removePath(d.path("perf_event"))
-}
-
-func (s *PerfEventGroup) GetStats(path string, stats *cgroups.Stats) error {
-	return nil
-}

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

@@ -1,73 +0,0 @@
-// +build linux
-
-package fs
-
-import (
-	"fmt"
-	"path/filepath"
-	"strconv"
-
-	"github.com/opencontainers/runc/libcontainer/cgroups"
-	"github.com/opencontainers/runc/libcontainer/configs"
-)
-
-type PidsGroup struct {
-}
-
-func (s *PidsGroup) Name() string {
-	return "pids"
-}
-
-func (s *PidsGroup) Apply(d *cgroupData) error {
-	_, err := d.join("pids")
-	if err != nil && !cgroups.IsNotFound(err) {
-		return err
-	}
-	return nil
-}
-
-func (s *PidsGroup) Set(path string, cgroup *configs.Cgroup) error {
-	if cgroup.Resources.PidsLimit != 0 {
-		// "max" is the fallback value.
-		limit := "max"
-
-		if cgroup.Resources.PidsLimit > 0 {
-			limit = strconv.FormatInt(cgroup.Resources.PidsLimit, 10)
-		}
-
-		if err := writeFile(path, "pids.max", limit); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func (s *PidsGroup) Remove(d *cgroupData) error {
-	return removePath(d.path("pids"))
-}
-
-func (s *PidsGroup) GetStats(path string, stats *cgroups.Stats) error {
-	current, err := getCgroupParamUint(path, "pids.current")
-	if err != nil {
-		return fmt.Errorf("failed to parse pids.current - %s", err)
-	}
-
-	maxString, err := getCgroupParamString(path, "pids.max")
-	if err != nil {
-		return fmt.Errorf("failed to parse pids.max - %s", err)
-	}
-
-	// Default if pids.max == "max" is 0 -- which represents "no limit".
-	var max uint64
-	if maxString != "max" {
-		max, err = parseUint(maxString, 10, 64)
-		if err != nil {
-			return fmt.Errorf("failed to parse pids.max - unable to parse %q as a uint from Cgroup file %q", maxString, filepath.Join(path, "pids.max"))
-		}
-	}
-
-	stats.PidsStats.Current = current
-	stats.PidsStats.Limit = max
-	return nil
-}

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

@@ -1,79 +0,0 @@
-// +build linux
-
-package fs
-
-import (
-	"errors"
-	"fmt"
-	"io/ioutil"
-	"path/filepath"
-	"strconv"
-	"strings"
-)
-
-var (
-	ErrNotSupportStat = errors.New("stats are not supported for subsystem")
-	ErrNotValidFormat = errors.New("line is not a valid key value format")
-)
-
-// Saturates negative values at zero and returns a uint64.
-// Due to kernel bugs, some of the memory cgroup stats can be negative.
-func parseUint(s string, base, bitSize int) (uint64, error) {
-	value, err := strconv.ParseUint(s, base, bitSize)
-	if err != nil {
-		intValue, intErr := strconv.ParseInt(s, base, bitSize)
-		// 1. Handle negative values greater than MinInt64 (and)
-		// 2. Handle negative values lesser than MinInt64
-		if intErr == nil && intValue < 0 {
-			return 0, nil
-		} else if intErr != nil && intErr.(*strconv.NumError).Err == strconv.ErrRange && intValue < 0 {
-			return 0, nil
-		}
-
-		return value, err
-	}
-
-	return value, nil
-}
-
-// Parses a cgroup param and returns as name, value
-//  i.e. "io_service_bytes 1234" will return as io_service_bytes, 1234
-func getCgroupParamKeyValue(t string) (string, uint64, error) {
-	parts := strings.Fields(t)
-	switch len(parts) {
-	case 2:
-		value, err := parseUint(parts[1], 10, 64)
-		if err != nil {
-			return "", 0, fmt.Errorf("unable to convert param value (%q) to uint64: %v", parts[1], err)
-		}
-
-		return parts[0], value, nil
-	default:
-		return "", 0, ErrNotValidFormat
-	}
-}
-
-// Gets a single uint64 value from the specified cgroup file.
-func getCgroupParamUint(cgroupPath, cgroupFile string) (uint64, error) {
-	fileName := filepath.Join(cgroupPath, cgroupFile)
-	contents, err := ioutil.ReadFile(fileName)
-	if err != nil {
-		return 0, err
-	}
-
-	res, err := parseUint(strings.TrimSpace(string(contents)), 10, 64)
-	if err != nil {
-		return res, fmt.Errorf("unable to parse %q as a uint from Cgroup file %q", string(contents), fileName)
-	}
-	return res, nil
-}
-
-// Gets a string value from the specified cgroup file
-func getCgroupParamString(cgroupPath, cgroupFile string) (string, error) {
-	contents, err := ioutil.ReadFile(filepath.Join(cgroupPath, cgroupFile))
-	if err != nil {
-		return "", err
-	}
-
-	return strings.TrimSpace(string(contents)), nil
-}

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

@@ -1,106 +0,0 @@
-// +build linux
-
-package cgroups
-
-type ThrottlingData struct {
-	// Number of periods with throttling active
-	Periods uint64 `json:"periods,omitempty"`
-	// Number of periods when the container hit its throttling limit.
-	ThrottledPeriods uint64 `json:"throttled_periods,omitempty"`
-	// Aggregate time the container was throttled for in nanoseconds.
-	ThrottledTime uint64 `json:"throttled_time,omitempty"`
-}
-
-// CpuUsage denotes the usage of a CPU.
-// All CPU stats are aggregate since container inception.
-type CpuUsage struct {
-	// Total CPU time consumed.
-	// Units: nanoseconds.
-	TotalUsage uint64 `json:"total_usage,omitempty"`
-	// Total CPU time consumed per core.
-	// Units: nanoseconds.
-	PercpuUsage []uint64 `json:"percpu_usage,omitempty"`
-	// Time spent by tasks of the cgroup in kernel mode.
-	// Units: nanoseconds.
-	UsageInKernelmode uint64 `json:"usage_in_kernelmode"`
-	// Time spent by tasks of the cgroup in user mode.
-	// Units: nanoseconds.
-	UsageInUsermode uint64 `json:"usage_in_usermode"`
-}
-
-type CpuStats struct {
-	CpuUsage       CpuUsage       `json:"cpu_usage,omitempty"`
-	ThrottlingData ThrottlingData `json:"throttling_data,omitempty"`
-}
-
-type MemoryData struct {
-	Usage    uint64 `json:"usage,omitempty"`
-	MaxUsage uint64 `json:"max_usage,omitempty"`
-	Failcnt  uint64 `json:"failcnt"`
-	Limit    uint64 `json:"limit"`
-}
-
-type MemoryStats struct {
-	// memory used for cache
-	Cache uint64 `json:"cache,omitempty"`
-	// usage of memory
-	Usage MemoryData `json:"usage,omitempty"`
-	// usage of memory + swap
-	SwapUsage MemoryData `json:"swap_usage,omitempty"`
-	// usage of kernel memory
-	KernelUsage MemoryData `json:"kernel_usage,omitempty"`
-	// usage of kernel TCP memory
-	KernelTCPUsage MemoryData `json:"kernel_tcp_usage,omitempty"`
-
-	Stats map[string]uint64 `json:"stats,omitempty"`
-}
-
-type PidsStats struct {
-	// number of pids in the cgroup
-	Current uint64 `json:"current,omitempty"`
-	// active pids hard limit
-	Limit uint64 `json:"limit,omitempty"`
-}
-
-type BlkioStatEntry struct {
-	Major uint64 `json:"major,omitempty"`
-	Minor uint64 `json:"minor,omitempty"`
-	Op    string `json:"op,omitempty"`
-	Value uint64 `json:"value,omitempty"`
-}
-
-type BlkioStats struct {
-	// number of bytes tranferred to and from the block device
-	IoServiceBytesRecursive []BlkioStatEntry `json:"io_service_bytes_recursive,omitempty"`
-	IoServicedRecursive     []BlkioStatEntry `json:"io_serviced_recursive,omitempty"`
-	IoQueuedRecursive       []BlkioStatEntry `json:"io_queue_recursive,omitempty"`
-	IoServiceTimeRecursive  []BlkioStatEntry `json:"io_service_time_recursive,omitempty"`
-	IoWaitTimeRecursive     []BlkioStatEntry `json:"io_wait_time_recursive,omitempty"`
-	IoMergedRecursive       []BlkioStatEntry `json:"io_merged_recursive,omitempty"`
-	IoTimeRecursive         []BlkioStatEntry `json:"io_time_recursive,omitempty"`
-	SectorsRecursive        []BlkioStatEntry `json:"sectors_recursive,omitempty"`
-}
-
-type HugetlbStats struct {
-	// current res_counter usage for hugetlb
-	Usage uint64 `json:"usage,omitempty"`
-	// maximum usage ever recorded.
-	MaxUsage uint64 `json:"max_usage,omitempty"`
-	// number of times hugetlb usage allocation failure.
-	Failcnt uint64 `json:"failcnt"`
-}
-
-type Stats struct {
-	CpuStats    CpuStats    `json:"cpu_stats,omitempty"`
-	MemoryStats MemoryStats `json:"memory_stats,omitempty"`
-	PidsStats   PidsStats   `json:"pids_stats,omitempty"`
-	BlkioStats  BlkioStats  `json:"blkio_stats,omitempty"`
-	// the map is in the format "size of hugepage: stats of the hugepage"
-	HugetlbStats map[string]HugetlbStats `json:"hugetlb_stats,omitempty"`
-}
-
-func NewStats() *Stats {
-	memoryStats := MemoryStats{Stats: make(map[string]uint64)}
-	hugetlbStats := make(map[string]HugetlbStats)
-	return &Stats{MemoryStats: memoryStats, HugetlbStats: hugetlbStats}
-}

vendor/src/github.com/opencontainers/runc/libcontainer/cgroups/systemd/apply_nosystemd.go

@@ -1,55 +0,0 @@
-// +build !linux
-
-package systemd
-
-import (
-	"fmt"
-
-	"github.com/opencontainers/runc/libcontainer/cgroups"
-	"github.com/opencontainers/runc/libcontainer/configs"
-)
-
-type Manager struct {
-	Cgroups *configs.Cgroup
-	Paths   map[string]string
-}
-
-func UseSystemd() bool {
-	return false
-}
-
-func (m *Manager) Apply(pid int) error {
-	return fmt.Errorf("Systemd not supported")
-}
-
-func (m *Manager) GetPids() ([]int, error) {
-	return nil, fmt.Errorf("Systemd not supported")
-}
-
-func (m *Manager) GetAllPids() ([]int, error) {
-	return nil, fmt.Errorf("Systemd not supported")
-}
-
-func (m *Manager) Destroy() error {
-	return fmt.Errorf("Systemd not supported")
-}
-
-func (m *Manager) GetPaths() map[string]string {
-	return nil
-}
-
-func (m *Manager) GetStats() (*cgroups.Stats, error) {
-	return nil, fmt.Errorf("Systemd not supported")
-}
-
-func (m *Manager) Set(container *configs.Config) error {
-	return nil, fmt.Errorf("Systemd not supported")
-}
-
-func (m *Manager) Freeze(state configs.FreezerState) error {
-	return fmt.Errorf("Systemd not supported")
-}
-
-func Freeze(c *configs.Cgroup, state configs.FreezerState) error {
-	return fmt.Errorf("Systemd not supported")
-}

vendor/src/github.com/opencontainers/runc/libcontainer/cgroups/systemd/apply_systemd.go

@@ -1,471 +0,0 @@
-// +build linux
-
-package systemd
-
-import (
-	"errors"
-	"fmt"
-	"io/ioutil"
-	"os"
-	"path/filepath"
-	"strconv"
-	"strings"
-	"sync"
-	"time"
-
-	systemdDbus "github.com/coreos/go-systemd/dbus"
-	systemdUtil "github.com/coreos/go-systemd/util"
-	"github.com/godbus/dbus"
-	"github.com/opencontainers/runc/libcontainer/cgroups"
-	"github.com/opencontainers/runc/libcontainer/cgroups/fs"
-	"github.com/opencontainers/runc/libcontainer/configs"
-)
-
-type Manager struct {
-	mu      sync.Mutex
-	Cgroups *configs.Cgroup
-	Paths   map[string]string
-}
-
-type subsystem interface {
-	// Name returns the name of the subsystem.
-	Name() string
-	// Returns the stats, as 'stats', corresponding to the cgroup under 'path'.
-	GetStats(path string, stats *cgroups.Stats) error
-	// Set the cgroup represented by cgroup.
-	Set(path string, cgroup *configs.Cgroup) error
-}
-
-var errSubsystemDoesNotExist = errors.New("cgroup: subsystem does not exist")
-
-type subsystemSet []subsystem
-
-func (s subsystemSet) Get(name string) (subsystem, error) {
-	for _, ss := range s {
-		if ss.Name() == name {
-			return ss, nil
-		}
-	}
-	return nil, errSubsystemDoesNotExist
-}
-
-var subsystems = subsystemSet{
-	&fs.CpusetGroup{},
-	&fs.DevicesGroup{},
-	&fs.MemoryGroup{},
-	&fs.CpuGroup{},
-	&fs.CpuacctGroup{},
-	&fs.PidsGroup{},
-	&fs.BlkioGroup{},
-	&fs.HugetlbGroup{},
-	&fs.PerfEventGroup{},
-	&fs.FreezerGroup{},
-	&fs.NetPrioGroup{},
-	&fs.NetClsGroup{},
-	&fs.NameGroup{GroupName: "name=systemd"},
-}
-
-const (
-	testScopeWait = 4
-)
-
-var (
-	connLock                        sync.Mutex
-	theConn                         *systemdDbus.Conn
-	hasStartTransientUnit           bool
-	hasTransientDefaultDependencies bool
-)
-
-func newProp(name string, units interface{}) systemdDbus.Property {
-	return systemdDbus.Property{
-		Name:  name,
-		Value: dbus.MakeVariant(units),
-	}
-}
-
-func UseSystemd() bool {
-	if !systemdUtil.IsRunningSystemd() {
-		return false
-	}
-
-	connLock.Lock()
-	defer connLock.Unlock()
-
-	if theConn == nil {
-		var err error
-		theConn, err = systemdDbus.New()
-		if err != nil {
-			return false
-		}
-
-		// Assume we have StartTransientUnit
-		hasStartTransientUnit = true
-
-		// But if we get UnknownMethod error we don't
-		if _, err := theConn.StartTransientUnit("test.scope", "invalid", nil, nil); err != nil {
-			if dbusError, ok := err.(dbus.Error); ok {
-				if dbusError.Name == "org.freedesktop.DBus.Error.UnknownMethod" {
-					hasStartTransientUnit = false
-					return hasStartTransientUnit
-				}
-			}
-		}
-
-		// Ensure the scope name we use doesn't exist. Use the Pid to
-		// avoid collisions between multiple libcontainer users on a
-		// single host.
-		scope := fmt.Sprintf("libcontainer-%d-systemd-test-default-dependencies.scope", os.Getpid())
-		testScopeExists := true
-		for i := 0; i <= testScopeWait; i++ {
-			if _, err := theConn.StopUnit(scope, "replace", nil); err != nil {
-				if dbusError, ok := err.(dbus.Error); ok {
-					if strings.Contains(dbusError.Name, "org.freedesktop.systemd1.NoSuchUnit") {
-						testScopeExists = false
-						break
-					}
-				}
-			}
-			time.Sleep(time.Millisecond)
-		}
-
-		// Bail out if we can't kill this scope without testing for DefaultDependencies
-		if testScopeExists {
-			return hasStartTransientUnit
-		}
-
-		// Assume StartTransientUnit on a scope allows DefaultDependencies
-		hasTransientDefaultDependencies = true
-		ddf := newProp("DefaultDependencies", false)
-		if _, err := theConn.StartTransientUnit(scope, "replace", []systemdDbus.Property{ddf}, nil); err != nil {
-			if dbusError, ok := err.(dbus.Error); ok {
-				if strings.Contains(dbusError.Name, "org.freedesktop.DBus.Error.PropertyReadOnly") {
-					hasTransientDefaultDependencies = false
-				}
-			}
-		}
-
-		// Not critical because of the stop unit logic above.
-		theConn.StopUnit(scope, "replace", nil)
-	}
-	return hasStartTransientUnit
-}
-
-func (m *Manager) Apply(pid int) error {
-	var (
-		c          = m.Cgroups
-		unitName   = getUnitName(c)
-		slice      = "system.slice"
-		properties []systemdDbus.Property
-	)
-
-	if c.Paths != nil {
-		paths := make(map[string]string)
-		for name, path := range c.Paths {
-			_, err := getSubsystemPath(m.Cgroups, name)
-			if err != nil {
-				// Don't fail if a cgroup hierarchy was not found, just skip this subsystem
-				if cgroups.IsNotFound(err) {
-					continue
-				}
-				return err
-			}
-			paths[name] = path
-		}
-		m.Paths = paths
-		return cgroups.EnterPid(m.Paths, pid)
-	}
-
-	if c.Parent != "" {
-		slice = c.Parent
-	}
-
-	properties = append(properties,
-		systemdDbus.PropSlice(slice),
-		systemdDbus.PropDescription("docker container "+c.Name),
-		newProp("PIDs", []uint32{uint32(pid)}),
-		// This is only supported on systemd versions 218 and above.
-		newProp("Delegate", true),
-	)
-
-	// Always enable accounting, this gets us the same behaviour as the fs implementation,
-	// plus the kernel has some problems with joining the memory cgroup at a later time.
-	properties = append(properties,
-		newProp("MemoryAccounting", true),
-		newProp("CPUAccounting", true),
-		newProp("BlockIOAccounting", true))
-
-	if hasTransientDefaultDependencies {
-		properties = append(properties,
-			newProp("DefaultDependencies", false))
-	}
-
-	if c.Resources.Memory != 0 {
-		properties = append(properties,
-			newProp("MemoryLimit", uint64(c.Resources.Memory)))
-	}
-
-	if c.Resources.CpuShares != 0 {
-		properties = append(properties,
-			newProp("CPUShares", uint64(c.Resources.CpuShares)))
-	}
-
-	if c.Resources.BlkioWeight != 0 {
-		properties = append(properties,
-			newProp("BlockIOWeight", uint64(c.Resources.BlkioWeight)))
-	}
-
-	// We have to set kernel memory here, as we can't change it once
-	// processes have been attached to the cgroup.
-	if c.Resources.KernelMemory != 0 {
-		if err := setKernelMemory(c); err != nil {
-			return err
-		}
-	}
-
-	if _, err := theConn.StartTransientUnit(unitName, "replace", properties, nil); err != nil {
-		return err
-	}
-
-	if err := joinCgroups(c, pid); err != nil {
-		return err
-	}
-
-	paths := make(map[string]string)
-	for _, s := range subsystems {
-		subsystemPath, err := getSubsystemPath(m.Cgroups, s.Name())
-		if err != nil {
-			// Don't fail if a cgroup hierarchy was not found, just skip this subsystem
-			if cgroups.IsNotFound(err) {
-				continue
-			}
-			return err
-		}
-		paths[s.Name()] = subsystemPath
-	}
-	m.Paths = paths
-	return nil
-}
-
-func (m *Manager) Destroy() error {
-	if m.Cgroups.Paths != nil {
-		return nil
-	}
-	m.mu.Lock()
-	defer m.mu.Unlock()
-	theConn.StopUnit(getUnitName(m.Cgroups), "replace", nil)
-	if err := cgroups.RemovePaths(m.Paths); err != nil {
-		return err
-	}
-	m.Paths = make(map[string]string)
-	return nil
-}
-
-func (m *Manager) GetPaths() map[string]string {
-	m.mu.Lock()
-	paths := m.Paths
-	m.mu.Unlock()
-	return paths
-}
-
-func writeFile(dir, file, data string) error {
-	// Normally dir should not be empty, one case is that cgroup subsystem
-	// is not mounted, we will get empty dir, and we want it fail here.
-	if dir == "" {
-		return fmt.Errorf("no such directory for %s", file)
-	}
-	return ioutil.WriteFile(filepath.Join(dir, file), []byte(data), 0700)
-}
-
-func join(c *configs.Cgroup, subsystem string, pid int) (string, error) {
-	path, err := getSubsystemPath(c, subsystem)
-	if err != nil {
-		return "", err
-	}
-	if err := os.MkdirAll(path, 0755); err != nil {
-		return "", err
-	}
-	if err := writeFile(path, "cgroup.procs", strconv.Itoa(pid)); err != nil {
-		return "", err
-	}
-
-	return path, nil
-}
-
-func joinCgroups(c *configs.Cgroup, pid int) error {
-	for _, sys := range subsystems {
-		name := sys.Name()
-		switch name {
-		case "name=systemd":
-			// let systemd handle this
-			break
-		case "cpuset":
-			path, err := getSubsystemPath(c, name)
-			if err != nil && !cgroups.IsNotFound(err) {
-				return err
-			}
-			s := &fs.CpusetGroup{}
-			if err := s.ApplyDir(path, c, pid); err != nil {
-				return err
-			}
-			break
-		default:
-			_, err := join(c, name, pid)
-			if err != nil {
-				// Even if it's `not found` error, we'll return err
-				// because devices cgroup is hard requirement for
-				// container security.
-				if name == "devices" {
-					return err
-				}
-				// For other subsystems, omit the `not found` error
-				// because they are optional.
-				if !cgroups.IsNotFound(err) {
-					return err
-				}
-			}
-		}
-	}
-
-	return nil
-}
-
-// systemd represents slice heirarchy using `-`, so we need to follow suit when
-// generating the path of slice. Essentially, test-a-b.slice becomes
-// test.slice/test-a.slice/test-a-b.slice.
-func expandSlice(slice string) (string, error) {
-	suffix := ".slice"
-	// Name has to end with ".slice", but can't be just ".slice".
-	if len(slice) < len(suffix) || !strings.HasSuffix(slice, suffix) {
-		return "", fmt.Errorf("invalid slice name: %s", slice)
-	}
-
-	// Path-separators are not allowed.
-	if strings.Contains(slice, "/") {
-		return "", fmt.Errorf("invalid slice name: %s", slice)
-	}
-
-	var path, prefix string
-	sliceName := strings.TrimSuffix(slice, suffix)
-	for _, component := range strings.Split(sliceName, "-") {
-		// test--a.slice isn't permitted, nor is -test.slice.
-		if component == "" {
-			return "", fmt.Errorf("invalid slice name: %s", slice)
-		}
-
-		// Append the component to the path and to the prefix.
-		path += prefix + component + suffix + "/"
-		prefix += component + "-"
-	}
-
-	return path, nil
-}
-
-func getSubsystemPath(c *configs.Cgroup, subsystem string) (string, error) {
-	mountpoint, err := cgroups.FindCgroupMountpoint(subsystem)
-	if err != nil {
-		return "", err
-	}
-
-	initPath, err := cgroups.GetInitCgroupDir(subsystem)
-	if err != nil {
-		return "", err
-	}
-
-	slice := "system.slice"
-	if c.Parent != "" {
-		slice = c.Parent
-	}
-
-	slice, err = expandSlice(slice)
-	if err != nil {
-		return "", err
-	}
-
-	return filepath.Join(mountpoint, initPath, slice, getUnitName(c)), nil
-}
-
-func (m *Manager) Freeze(state configs.FreezerState) error {
-	path, err := getSubsystemPath(m.Cgroups, "freezer")
-	if err != nil {
-		return err
-	}
-	prevState := m.Cgroups.Resources.Freezer
-	m.Cgroups.Resources.Freezer = state
-	freezer, err := subsystems.Get("freezer")
-	if err != nil {
-		return err
-	}
-	err = freezer.Set(path, m.Cgroups)
-	if err != nil {
-		m.Cgroups.Resources.Freezer = prevState
-		return err
-	}
-	return nil
-}
-
-func (m *Manager) GetPids() ([]int, error) {
-	path, err := getSubsystemPath(m.Cgroups, "devices")
-	if err != nil {
-		return nil, err
-	}
-	return cgroups.GetPids(path)
-}
-
-func (m *Manager) GetAllPids() ([]int, error) {
-	path, err := getSubsystemPath(m.Cgroups, "devices")
-	if err != nil {
-		return nil, err
-	}
-	return cgroups.GetAllPids(path)
-}
-
-func (m *Manager) GetStats() (*cgroups.Stats, error) {
-	m.mu.Lock()
-	defer m.mu.Unlock()
-	stats := cgroups.NewStats()
-	for name, path := range m.Paths {
-		sys, err := subsystems.Get(name)
-		if err == errSubsystemDoesNotExist || !cgroups.PathExists(path) {
-			continue
-		}
-		if err := sys.GetStats(path, stats); err != nil {
-			return nil, err
-		}
-	}
-
-	return stats, nil
-}
-
-func (m *Manager) Set(container *configs.Config) error {
-	for _, sys := range subsystems {
-		// Get the subsystem path, but don't error out for not found cgroups.
-		path, err := getSubsystemPath(container.Cgroups, sys.Name())
-		if err != nil && !cgroups.IsNotFound(err) {
-			return err
-		}
-
-		if err := sys.Set(path, container.Cgroups); err != nil {
-			return err
-		}
-	}
-
-	if m.Paths["cpu"] != "" {
-		if err := fs.CheckCpushares(m.Paths["cpu"], container.Cgroups.Resources.CpuShares); err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
-func getUnitName(c *configs.Cgroup) string {
-	return fmt.Sprintf("%s-%s.scope", c.ScopePrefix, c.Name)
-}
-
-func setKernelMemory(c *configs.Cgroup) error {
-	path, err := getSubsystemPath(c, "memory")
-	if err != nil && !cgroups.IsNotFound(err) {
-		return err
-	}
-
-	return os.MkdirAll(path, 0755)
-}

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

@@ -1,397 +0,0 @@
-// +build linux
-
-package cgroups
-
-import (
-	"bufio"
-	"fmt"
-	"io"
-	"io/ioutil"
-	"os"
-	"path/filepath"
-	"strconv"
-	"strings"
-	"time"
-
-	"github.com/docker/go-units"
-)
-
-const cgroupNamePrefix = "name="
-
-// https://www.kernel.org/doc/Documentation/cgroup-v1/cgroups.txt
-func FindCgroupMountpoint(subsystem string) (string, error) {
-	// We are not using mount.GetMounts() because it's super-inefficient,
-	// parsing it directly sped up x10 times because of not using Sscanf.
-	// It was one of two major performance drawbacks in container start.
-	if !isSubsystemAvailable(subsystem) {
-		return "", NewNotFoundError(subsystem)
-	}
-	f, err := os.Open("/proc/self/mountinfo")
-	if err != nil {
-		return "", err
-	}
-	defer f.Close()
-
-	scanner := bufio.NewScanner(f)
-	for scanner.Scan() {
-		txt := scanner.Text()
-		fields := strings.Split(txt, " ")
-		for _, opt := range strings.Split(fields[len(fields)-1], ",") {
-			if opt == subsystem {
-				return fields[4], nil
-			}
-		}
-	}
-	if err := scanner.Err(); err != nil {
-		return "", err
-	}
-
-	return "", NewNotFoundError(subsystem)
-}
-
-func FindCgroupMountpointAndRoot(subsystem string) (string, string, error) {
-	if !isSubsystemAvailable(subsystem) {
-		return "", "", NewNotFoundError(subsystem)
-	}
-	f, err := os.Open("/proc/self/mountinfo")
-	if err != nil {
-		return "", "", err
-	}
-	defer f.Close()
-
-	scanner := bufio.NewScanner(f)
-	for scanner.Scan() {
-		txt := scanner.Text()
-		fields := strings.Split(txt, " ")
-		for _, opt := range strings.Split(fields[len(fields)-1], ",") {
-			if opt == subsystem {
-				return fields[4], fields[3], nil
-			}
-		}
-	}
-	if err := scanner.Err(); err != nil {
-		return "", "", err
-	}
-
-	return "", "", NewNotFoundError(subsystem)
-}
-
-func isSubsystemAvailable(subsystem string) bool {
-	cgroups, err := ParseCgroupFile("/proc/self/cgroup")
-	if err != nil {
-		return false
-	}
-	_, avail := cgroups[subsystem]
-	return avail
-}
-
-func FindCgroupMountpointDir() (string, error) {
-	f, err := os.Open("/proc/self/mountinfo")
-	if err != nil {
-		return "", err
-	}
-	defer f.Close()
-
-	scanner := bufio.NewScanner(f)
-	for scanner.Scan() {
-		text := scanner.Text()
-		fields := strings.Split(text, " ")
-		// Safe as mountinfo encodes mountpoints with spaces as \040.
-		index := strings.Index(text, " - ")
-		postSeparatorFields := strings.Fields(text[index+3:])
-		numPostFields := len(postSeparatorFields)
-
-		// This is an error as we can't detect if the mount is for "cgroup"
-		if numPostFields == 0 {
-			return "", fmt.Errorf("Found no fields post '-' in %q", text)
-		}
-
-		if postSeparatorFields[0] == "cgroup" {
-			// Check that the mount is properly formated.
-			if numPostFields < 3 {
-				return "", fmt.Errorf("Error found less than 3 fields post '-' in %q", text)
-			}
-
-			return filepath.Dir(fields[4]), nil
-		}
-	}
-	if err := scanner.Err(); err != nil {
-		return "", err
-	}
-
-	return "", NewNotFoundError("cgroup")
-}
-
-type Mount struct {
-	Mountpoint string
-	Root       string
-	Subsystems []string
-}
-
-func (m Mount) GetThisCgroupDir(cgroups map[string]string) (string, error) {
-	if len(m.Subsystems) == 0 {
-		return "", fmt.Errorf("no subsystem for mount")
-	}
-
-	return getControllerPath(m.Subsystems[0], cgroups)
-}
-
-func getCgroupMountsHelper(ss map[string]bool, mi io.Reader) ([]Mount, error) {
-	res := make([]Mount, 0, len(ss))
-	scanner := bufio.NewScanner(mi)
-	numFound := 0
-	for scanner.Scan() && numFound < len(ss) {
-		txt := scanner.Text()
-		sepIdx := strings.Index(txt, " - ")
-		if sepIdx == -1 {
-			return nil, fmt.Errorf("invalid mountinfo format")
-		}
-		if txt[sepIdx+3:sepIdx+9] != "cgroup" {
-			continue
-		}
-		fields := strings.Split(txt, " ")
-		m := Mount{
-			Mountpoint: fields[4],
-			Root:       fields[3],
-		}
-		for _, opt := range strings.Split(fields[len(fields)-1], ",") {
-			if !ss[opt] {
-				continue
-			}
-			if strings.HasPrefix(opt, cgroupNamePrefix) {
-				m.Subsystems = append(m.Subsystems, opt[len(cgroupNamePrefix):])
-			} else {
-				m.Subsystems = append(m.Subsystems, opt)
-			}
-			numFound++
-		}
-		res = append(res, m)
-	}
-	if err := scanner.Err(); err != nil {
-		return nil, err
-	}
-	return res, nil
-}
-
-func GetCgroupMounts() ([]Mount, error) {
-	f, err := os.Open("/proc/self/mountinfo")
-	if err != nil {
-		return nil, err
-	}
-	defer f.Close()
-
-	all, err := ParseCgroupFile("/proc/self/cgroup")
-	if err != nil {
-		return nil, err
-	}
-
-	allMap := make(map[string]bool)
-	for s := range all {
-		allMap[s] = true
-	}
-	return getCgroupMountsHelper(allMap, f)
-}
-
-// GetAllSubsystems returns all the cgroup subsystems supported by the kernel
-func GetAllSubsystems() ([]string, error) {
-	f, err := os.Open("/proc/cgroups")
-	if err != nil {
-		return nil, err
-	}
-	defer f.Close()
-
-	subsystems := []string{}
-
-	s := bufio.NewScanner(f)
-	for s.Scan() {
-		if err := s.Err(); err != nil {
-			return nil, err
-		}
-		text := s.Text()
-		if text[0] != '#' {
-			parts := strings.Fields(text)
-			if len(parts) >= 4 && parts[3] != "0" {
-				subsystems = append(subsystems, parts[0])
-			}
-		}
-	}
-	return subsystems, nil
-}
-
-// GetThisCgroupDir returns the relative path to the cgroup docker is running in.
-func GetThisCgroupDir(subsystem string) (string, error) {
-	cgroups, err := ParseCgroupFile("/proc/self/cgroup")
-	if err != nil {
-		return "", err
-	}
-
-	return getControllerPath(subsystem, cgroups)
-}
-
-func GetInitCgroupDir(subsystem string) (string, error) {
-
-	cgroups, err := ParseCgroupFile("/proc/1/cgroup")
-	if err != nil {
-		return "", err
-	}
-
-	return getControllerPath(subsystem, cgroups)
-}
-
-func readProcsFile(dir string) ([]int, error) {
-	f, err := os.Open(filepath.Join(dir, "cgroup.procs"))
-	if err != nil {
-		return nil, err
-	}
-	defer f.Close()
-
-	var (
-		s   = bufio.NewScanner(f)
-		out = []int{}
-	)
-
-	for s.Scan() {
-		if t := s.Text(); t != "" {
-			pid, err := strconv.Atoi(t)
-			if err != nil {
-				return nil, err
-			}
-			out = append(out, pid)
-		}
-	}
-	return out, nil
-}
-
-func ParseCgroupFile(path string) (map[string]string, error) {
-	f, err := os.Open(path)
-	if err != nil {
-		return nil, err
-	}
-	defer f.Close()
-
-	s := bufio.NewScanner(f)
-	cgroups := make(map[string]string)
-
-	for s.Scan() {
-		if err := s.Err(); err != nil {
-			return nil, err
-		}
-
-		text := s.Text()
-		parts := strings.Split(text, ":")
-
-		for _, subs := range strings.Split(parts[1], ",") {
-			cgroups[subs] = parts[2]
-		}
-	}
-	return cgroups, nil
-}
-
-func getControllerPath(subsystem string, cgroups map[string]string) (string, error) {
-
-	if p, ok := cgroups[subsystem]; ok {
-		return p, nil
-	}
-
-	if p, ok := cgroups[cgroupNamePrefix+subsystem]; ok {
-		return p, nil
-	}
-
-	return "", NewNotFoundError(subsystem)
-}
-
-func PathExists(path string) bool {
-	if _, err := os.Stat(path); err != nil {
-		return false
-	}
-	return true
-}
-
-func EnterPid(cgroupPaths map[string]string, pid int) error {
-	for _, path := range cgroupPaths {
-		if PathExists(path) {
-			if err := ioutil.WriteFile(filepath.Join(path, "cgroup.procs"),
-				[]byte(strconv.Itoa(pid)), 0700); err != nil {
-				return err
-			}
-		}
-	}
-	return nil
-}
-
-// RemovePaths iterates over the provided paths removing them.
-// We trying to remove all paths five times with increasing delay between tries.
-// If after all there are not removed cgroups - appropriate error will be
-// returned.
-func RemovePaths(paths map[string]string) (err error) {
-	delay := 10 * time.Millisecond
-	for i := 0; i < 5; i++ {
-		if i != 0 {
-			time.Sleep(delay)
-			delay *= 2
-		}
-		for s, p := range paths {
-			os.RemoveAll(p)
-			// TODO: here probably should be logging
-			_, err := os.Stat(p)
-			// We need this strange way of checking cgroups existence because
-			// RemoveAll almost always returns error, even on already removed
-			// cgroups
-			if os.IsNotExist(err) {
-				delete(paths, s)
-			}
-		}
-		if len(paths) == 0 {
-			return nil
-		}
-	}
-	return fmt.Errorf("Failed to remove paths: %v", paths)
-}
-
-func GetHugePageSize() ([]string, error) {
-	var pageSizes []string
-	sizeList := []string{"B", "kB", "MB", "GB", "TB", "PB"}
-	files, err := ioutil.ReadDir("/sys/kernel/mm/hugepages")
-	if err != nil {
-		return pageSizes, err
-	}
-	for _, st := range files {
-		nameArray := strings.Split(st.Name(), "-")
-		pageSize, err := units.RAMInBytes(nameArray[1])
-		if err != nil {
-			return []string{}, err
-		}
-		sizeString := units.CustomSize("%g%s", float64(pageSize), 1024.0, sizeList)
-		pageSizes = append(pageSizes, sizeString)
-	}
-
-	return pageSizes, nil
-}
-
-// GetPids returns all pids, that were added to cgroup at path.
-func GetPids(path string) ([]int, error) {
-	return readProcsFile(path)
-}
-
-// GetAllPids returns all pids, that were added to cgroup at path and to all its
-// subcgroups.
-func GetAllPids(path string) ([]int, error) {
-	var pids []int
-	// collect pids from all sub-cgroups
-	err := filepath.Walk(path, func(p string, info os.FileInfo, iErr error) error {
-		dir, file := filepath.Split(p)
-		if file != "cgroup.procs" {
-			return nil
-		}
-		if iErr != nil {
-			return iErr
-		}
-		cPids, err := readProcsFile(dir)
-		if err != nil {
-			return err
-		}
-		pids = append(pids, cPids...)
-		return nil
-	})
-	return pids, err
-}

vendor/src/github.com/opencontainers/runc/libcontainer/compat_1.5_linux.go

@@ -1,10 +0,0 @@
-// +build linux,!go1.5
-
-package libcontainer
-
-import "syscall"
-
-// GidMappingsEnableSetgroups was added in Go 1.5, so do nothing when building
-// with earlier versions
-func enableSetgroups(sys *syscall.SysProcAttr) {
-}