Merge branch 'man1-assumption' of https://github.com/tianon/docker into manpages

MAINTAINERS

@@ -1,4 +1,4 @@
-Solomon Hykes <solomon@dotcloud.com> (@shykes)
+Solomon Hykes <solomon@docker.com> (@shykes)
 Guillaume J. Charmes <guillaume@docker.com> (@creack)
 Victor Vieux <vieux@docker.com> (@vieux)
 Michael Crosby <michael@crosbymichael.com> (@crosbymichael)

archive/diff.go

@@ -68,7 +68,7 @@ func ApplyLayer(dest string, layer ArchiveReader) error {
 			parent := filepath.Dir(hdr.Name)
 			parentPath := filepath.Join(dest, parent)
 			if _, err := os.Lstat(parentPath); err != nil && os.IsNotExist(err) {
-				err = os.MkdirAll(parentPath, 600)
+				err = os.MkdirAll(parentPath, 0600)
 				if err != nil {
 					return err
 				}

contrib/man/md/md2man-all.sh

@@ -9,8 +9,14 @@ cd "$(dirname "$(readlink -f "$BASH_SOURCE")")"
 	pwd
 }
 
-mkdir -p ../man1
-
-for FILE in docker*.md; do
-	pandoc -s -t man "$FILE" -o "../man1/${FILE%.*}.1"
+for FILE in *.md; do
+	base="$(basename "$FILE")"
+	name="${base%.md}"
+	num="${name##*.}"
+	if [ -z "$num" -o "$base" = "$num" ]; then
+		# skip files that aren't of the format xxxx.N.md (like README.md)
+		continue
+	fi
+	mkdir -p "../man${num}"
+	pandoc -s -t man "$FILE" -o "../man${num}/${name}"
 done

daemon/execdriver/native/create.go

@@ -7,9 +7,9 @@ import (
 	"github.com/dotcloud/docker/daemon/execdriver"
 	"github.com/dotcloud/docker/daemon/execdriver/native/configuration"
 	"github.com/dotcloud/docker/daemon/execdriver/native/template"
+	"github.com/dotcloud/docker/pkg/apparmor"
 	"github.com/dotcloud/docker/pkg/label"
 	"github.com/dotcloud/docker/pkg/libcontainer"
-	"github.com/dotcloud/docker/pkg/libcontainer/apparmor"
 )
 
 // createContainer populates and configures the container type with the

daemon/execdriver/native/driver.go

@@ -3,12 +3,6 @@ package native
 import (
 	"encoding/json"
 	"fmt"
-	"github.com/dotcloud/docker/daemon/execdriver"
-	"github.com/dotcloud/docker/pkg/cgroups"
-	"github.com/dotcloud/docker/pkg/libcontainer"
-	"github.com/dotcloud/docker/pkg/libcontainer/apparmor"
-	"github.com/dotcloud/docker/pkg/libcontainer/nsinit"
-	"github.com/dotcloud/docker/pkg/system"
 	"io"
 	"io/ioutil"
 	"log"
@@ -18,6 +12,13 @@ import (
 	"strconv"
 	"strings"
 	"syscall"
+
+	"github.com/dotcloud/docker/daemon/execdriver"
+	"github.com/dotcloud/docker/pkg/apparmor"
+	"github.com/dotcloud/docker/pkg/cgroups"
+	"github.com/dotcloud/docker/pkg/libcontainer"
+	"github.com/dotcloud/docker/pkg/libcontainer/nsinit"
+	"github.com/dotcloud/docker/pkg/system"
 )
 
 const (

daemon/execdriver/native/template/default_template.go

@@ -1,9 +1,9 @@
 package template
 
 import (
+	"github.com/dotcloud/docker/pkg/apparmor"
 	"github.com/dotcloud/docker/pkg/cgroups"
 	"github.com/dotcloud/docker/pkg/libcontainer"
-	"github.com/dotcloud/docker/pkg/libcontainer/apparmor"
 )
 
 // New returns the docker default configuration for libcontainer

docs/sources/reference/api/registry_index_spec.md

@@ -644,17 +644,20 @@ You have 3 options:
     >     - X-Docker-Token: Token
     >         signature=123abc,repository=”foo/bar”,access=read
     >
+
 2.  Provide user credentials only
 
     > **Header**:
     > :   Authorization: Basic QWxhZGRpbjpvcGVuIHNlc2FtZQ==
     >
+
 3.  Provide Token
 
     > **Header**:
     > :   Authorization: Token
     >     signature=123abc,repository=”foo/bar”,access=read
     >
+
 ### 6.2 On the Registry
 
 The Registry only supports the Token challenge:

engine/MAINTAINERS

@@ -1 +1 @@
-#Solomon Hykes <solomon@dotcloud.com> Temporarily unavailable
+Solomon Hykes <solomon@docker.com>

hack/infrastructure/MAINTAINERS

@@ -1,2 +0,0 @@
-Ken Cochrane <ken@dotcloud.com> (@kencochrane)
-Jerome Petazzoni <jerome@dotcloud.com> (@jpetazzo)

hack/make.sh

@@ -117,6 +117,14 @@ if [ "$(uname -s)" = 'FreeBSD' ]; then
 	LDFLAGS="$LDFLAGS -extld clang"
 fi
 
+# If sqlite3.h doesn't exist under /usr/include,
+# check /usr/local/include also just in case
+# (e.g. FreeBSD Ports installs it under the directory)
+if [ ! -e /usr/include/sqlite3.h ] && [ -e /usr/local/include/sqlite3.h ]; then
+	export CGO_CFLAGS='-I/usr/local/include'
+	export CGO_LDFLAGS='-L/usr/local/lib'
+fi
+
 HAVE_GO_TEST_COVER=
 if \
 	go help testflag | grep -- -cover > /dev/null \

pkg/apparmor/apparmor.go

@@ -8,12 +8,16 @@ package apparmor
 import "C"
 import (
 	"io/ioutil"
+	"os"
 	"unsafe"
 )
 
 func IsEnabled() bool {
-	buf, err := ioutil.ReadFile("/sys/module/apparmor/parameters/enabled")
-	return err == nil && len(buf) > 1 && buf[0] == 'Y'
+	if _, err := os.Stat("/sys/kernel/security/apparmor"); err == nil {
+		buf, err := ioutil.ReadFile("/sys/module/apparmor/parameters/enabled")
+		return err == nil && len(buf) > 1 && buf[0] == 'Y'
+	}
+	return false
 }
 
 func ApplyProfile(pid int, name string) error {

pkg/apparmor/gen.go

@@ -0,0 +1,94 @@
+package apparmor
+
+import (
+	"io"
+	"os"
+	"text/template"
+)
+
+type data struct {
+	Name         string
+	Imports      []string
+	InnerImports []string
+}
+
+const baseTemplate = `
+{{range $value := .Imports}}
+{{$value}}
+{{end}}
+
+profile {{.Name}} flags=(attach_disconnected,mediate_deleted) {
+{{range $value := .InnerImports}}
+  {{$value}}
+{{end}}
+
+  network,
+  capability,
+  file,
+  umount,
+
+  mount fstype=tmpfs,
+  mount fstype=mqueue,
+  mount fstype=fuse.*,
+  mount fstype=binfmt_misc -> /proc/sys/fs/binfmt_misc/,
+  mount fstype=efivarfs -> /sys/firmware/efi/efivars/,
+  mount fstype=fusectl -> /sys/fs/fuse/connections/,
+  mount fstype=securityfs -> /sys/kernel/security/,
+  mount fstype=debugfs -> /sys/kernel/debug/,
+  mount fstype=proc -> /proc/,
+  mount fstype=sysfs -> /sys/,
+
+  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 options=(ro, remount) -> /,
+  deny mount fstype=debugfs -> /var/lib/ureadahead/debugfs/,
+  deny mount fstype=devpts,
+
+  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,
+}
+`
+
+func generateProfile(out io.Writer) error {
+	compiled, err := template.New("apparmor_profile").Parse(baseTemplate)
+	if err != nil {
+		return err
+	}
+	data := &data{
+		Name: "docker-default",
+	}
+	if tuntablesExists() {
+		data.Imports = append(data.Imports, "#include <tunables/global>")
+	} else {
+		data.Imports = append(data.Imports, "@{PROC}=/proc/")
+	}
+	if abstrctionsEsists() {
+		data.InnerImports = append(data.InnerImports, "#include <abstractions/base>")
+	}
+	if err := compiled.Execute(out, data); err != nil {
+		return err
+	}
+	return nil
+}
+
+// check if the tunables/global exist
+func tuntablesExists() bool {
+	_, err := os.Stat("/etc/apparmor.d/tunables/global")
+	return err == nil
+}
+
+// check if abstractions/base exist
+func abstrctionsEsists() bool {
+	_, err := os.Stat("/etc/apparmor.d/abstractions/base")
+	return err == nil
+}

pkg/apparmor/setup.go

@@ -0,0 +1,83 @@
+package apparmor
+
+import (
+	"fmt"
+	"io"
+	"os"
+	"os/exec"
+	"path"
+)
+
+const (
+	DefaultProfilePath = "/etc/apparmor.d/docker"
+)
+
+func InstallDefaultProfile(backupPath string) error {
+	if !IsEnabled() {
+		return nil
+	}
+
+	// If the profile already exists, check if we already have a backup
+	// if not, do the backup and override it. (docker 0.10 upgrade changed the apparmor profile)
+	// see gh#5049, apparmor blocks signals in ubuntu 14.04
+	if _, err := os.Stat(DefaultProfilePath); err == nil {
+		if _, err := os.Stat(backupPath); err == nil {
+			// If both the profile and the backup are present, do nothing
+			return nil
+		}
+		// Make sure the directory exists
+		if err := os.MkdirAll(path.Dir(backupPath), 0755); err != nil {
+			return err
+		}
+
+		// Create the backup file
+		f, err := os.Create(backupPath)
+		if err != nil {
+			return err
+		}
+		defer f.Close()
+
+		src, err := os.Open(DefaultProfilePath)
+		if err != nil {
+			return err
+		}
+		defer src.Close()
+
+		if _, err := io.Copy(f, src); err != nil {
+			return err
+		}
+	}
+
+	// Make sure /etc/apparmor.d exists
+	if err := os.MkdirAll(path.Dir(DefaultProfilePath), 0755); err != nil {
+		return err
+	}
+
+	f, err := os.OpenFile(DefaultProfilePath, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644)
+	if err != nil {
+		return err
+	}
+	if err := generateProfile(f); err != nil {
+		f.Close()
+		return err
+	}
+	f.Close()
+
+	cmd := exec.Command("/sbin/apparmor_parser", "-r", "-W", "docker")
+	// to use the parser directly we have to make sure we are in the correct
+	// dir with the profile
+	cmd.Dir = "/etc/apparmor.d"
+
+	output, err := cmd.CombinedOutput()
+	if err != nil && !os.IsNotExist(err) {
+		if e, ok := err.(*exec.Error); ok {
+			// keeping with the current profile load code, if the parser does not
+			// exist then just return
+			if e.Err == exec.ErrNotFound || os.IsNotExist(e.Err) {
+				return nil
+			}
+		}
+		return fmt.Errorf("Error loading docker profile: %s (%s)", err, output)
+	}
+	return nil
+}

pkg/cgroups/apply_nosystemd.go

@@ -1,15 +0,0 @@
-// +build !linux
-
-package cgroups
-
-import (
-	"fmt"
-)
-
-func useSystemd() bool {
-	return false
-}
-
-func systemdApply(c *Cgroup, pid int) (ActiveCgroup, error) {
-	return nil, fmt.Errorf("Systemd not supported")
-}

pkg/cgroups/apply_raw.go

@@ -1,256 +0,0 @@
-package cgroups
-
-import (
-	"fmt"
-	"os"
-	"path/filepath"
-	"strconv"
-)
-
-type rawCgroup struct {
-	root   string
-	cgroup string
-}
-
-func rawApply(c *Cgroup, pid int) (ActiveCgroup, error) {
-	// We have two implementation of cgroups support, one is based on
-	// systemd and the dbus api, and one is based on raw cgroup fs operations
-	// following the pre-single-writer model docs at:
-	// http://www.freedesktop.org/wiki/Software/systemd/PaxControlGroups/
-	//
-	// we can pick any subsystem to find the root
-
-	cgroupRoot, err := FindCgroupMountpoint("cpu")
-	if err != nil {
-		return nil, err
-	}
-	cgroupRoot = filepath.Dir(cgroupRoot)
-
-	if _, err := os.Stat(cgroupRoot); err != nil {
-		return nil, fmt.Errorf("cgroups fs not found")
-	}
-
-	cgroup := c.Name
-	if c.Parent != "" {
-		cgroup = filepath.Join(c.Parent, cgroup)
-	}
-
-	raw := &rawCgroup{
-		root:   cgroupRoot,
-		cgroup: cgroup,
-	}
-	for _, g := range []func(*Cgroup, int) error{
-		raw.setupDevices,
-		raw.setupMemory,
-		raw.setupCpu,
-		raw.setupCpuset,
-		raw.setupCpuacct,
-		raw.setupBlkio,
-		raw.setupPerfevent,
-		raw.setupFreezer,
-	} {
-		if err := g(c, pid); err != nil {
-			return nil, err
-		}
-	}
-
-	return raw, nil
-}
-
-func (raw *rawCgroup) path(subsystem string) (string, error) {
-	initPath, err := GetInitCgroupDir(subsystem)
-	if err != nil {
-		return "", err
-	}
-	return filepath.Join(raw.root, subsystem, initPath, raw.cgroup), nil
-}
-
-func (raw *rawCgroup) join(subsystem string, pid int) (string, error) {
-	path, err := raw.path(subsystem)
-	if err != nil {
-		return "", err
-	}
-	if err := os.MkdirAll(path, 0755); err != nil && !os.IsExist(err) {
-		return "", err
-	}
-	if err := writeFile(path, "cgroup.procs", strconv.Itoa(pid)); err != nil {
-		return "", err
-	}
-	return path, nil
-}
-
-func (raw *rawCgroup) setupDevices(c *Cgroup, pid int) (err error) {
-	dir, err := raw.join("devices", pid)
-	if err != nil {
-		return err
-	}
-	defer func() {
-		if err != nil {
-			os.RemoveAll(dir)
-		}
-	}()
-
-	if !c.DeviceAccess {
-
-		if err := writeFile(dir, "devices.deny", "a"); err != nil {
-			return err
-		}
-
-		allow := []string{
-			// allow mknod for any device
-			"c *:* m",
-			"b *:* m",
-
-			// /dev/null, zero, full
-			"c 1:3 rwm",
-			"c 1:5 rwm",
-			"c 1:7 rwm",
-
-			// consoles
-			"c 5:1 rwm",
-			"c 5:0 rwm",
-			"c 4:0 rwm",
-			"c 4:1 rwm",
-
-			// /dev/urandom,/dev/random
-			"c 1:9 rwm",
-			"c 1:8 rwm",
-
-			// /dev/pts/ - pts namespaces are "coming soon"
-			"c 136:* rwm",
-			"c 5:2 rwm",
-
-			// tuntap
-			"c 10:200 rwm",
-		}
-
-		for _, val := range allow {
-			if err := writeFile(dir, "devices.allow", val); err != nil {
-				return err
-			}
-		}
-	}
-	return nil
-}
-
-func (raw *rawCgroup) setupMemory(c *Cgroup, pid int) (err error) {
-	dir, err := raw.join("memory", pid)
-	// only return an error for memory if it was not specified
-	if err != nil && (c.Memory != 0 || c.MemorySwap != 0) {
-		return err
-	}
-	defer func() {
-		if err != nil {
-			os.RemoveAll(dir)
-		}
-	}()
-
-	if c.Memory != 0 || c.MemorySwap != 0 {
-		if c.Memory != 0 {
-			if err := writeFile(dir, "memory.limit_in_bytes", strconv.FormatInt(c.Memory, 10)); err != nil {
-				return err
-			}
-			if err := writeFile(dir, "memory.soft_limit_in_bytes", strconv.FormatInt(c.Memory, 10)); err != nil {
-				return err
-			}
-		}
-		// By default, MemorySwap is set to twice the size of RAM.
-		// If you want to omit MemorySwap, set it to `-1'.
-		if c.MemorySwap != -1 {
-			if err := writeFile(dir, "memory.memsw.limit_in_bytes", strconv.FormatInt(c.Memory*2, 10)); err != nil {
-				return err
-			}
-		}
-	}
-	return nil
-}
-
-func (raw *rawCgroup) setupCpu(c *Cgroup, pid int) (err error) {
-	// We always want to join the cpu group, to allow fair cpu scheduling
-	// on a container basis
-	dir, err := raw.join("cpu", pid)
-	if err != nil {
-		return err
-	}
-	if c.CpuShares != 0 {
-		if err := writeFile(dir, "cpu.shares", strconv.FormatInt(c.CpuShares, 10)); err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
-func (raw *rawCgroup) setupCpuset(c *Cgroup, pid int) (err error) {
-	// we don't want to join this cgroup unless it is specified
-	if c.CpusetCpus != "" {
-		dir, err := raw.join("cpuset", pid)
-		if err != nil && c.CpusetCpus != "" {
-			return err
-		}
-		defer func() {
-			if err != nil {
-				os.RemoveAll(dir)
-			}
-		}()
-
-		if err := writeFile(dir, "cpuset.cpus", c.CpusetCpus); err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
-func (raw *rawCgroup) setupCpuacct(c *Cgroup, pid int) error {
-	// we just want to join this group even though we don't set anything
-	if _, err := raw.join("cpuacct", pid); err != nil && err != ErrNotFound {
-		return err
-	}
-	return nil
-}
-
-func (raw *rawCgroup) setupBlkio(c *Cgroup, pid int) error {
-	// we just want to join this group even though we don't set anything
-	if _, err := raw.join("blkio", pid); err != nil && err != ErrNotFound {
-		return err
-	}
-	return nil
-}
-
-func (raw *rawCgroup) setupPerfevent(c *Cgroup, pid int) error {
-	// we just want to join this group even though we don't set anything
-	if _, err := raw.join("perf_event", pid); err != nil && err != ErrNotFound {
-		return err
-	}
-	return nil
-}
-
-func (raw *rawCgroup) setupFreezer(c *Cgroup, pid int) error {
-	// we just want to join this group even though we don't set anything
-	if _, err := raw.join("freezer", pid); err != nil && err != ErrNotFound {
-		return err
-	}
-	return nil
-}
-
-func (raw *rawCgroup) Cleanup() error {
-	get := func(subsystem string) string {
-		path, _ := raw.path(subsystem)
-		return path
-	}
-
-	for _, path := range []string{
-		get("memory"),
-		get("devices"),
-		get("cpu"),
-		get("cpuset"),
-		get("cpuacct"),
-		get("blkio"),
-		get("perf_event"),
-		get("freezer"),
-	} {
-		if path != "" {
-			os.RemoveAll(path)
-		}
-	}
-	return nil
-}

pkg/cgroups/cgroups.go

@@ -1,14 +1,7 @@
 package cgroups
 
 import (
-	"bufio"
 	"errors"
-	"github.com/dotcloud/docker/pkg/mount"
-	"io"
-	"io/ioutil"
-	"os"
-	"path/filepath"
-	"strings"
 )
 
 var (
@@ -31,77 +24,3 @@ type Cgroup struct {
 type ActiveCgroup interface {
 	Cleanup() error
 }
-
-// https://www.kernel.org/doc/Documentation/cgroups/cgroups.txt
-func FindCgroupMountpoint(subsystem string) (string, error) {
-	mounts, err := mount.GetMounts()
-	if err != nil {
-		return "", err
-	}
-
-	for _, mount := range mounts {
-		if mount.Fstype == "cgroup" {
-			for _, opt := range strings.Split(mount.VfsOpts, ",") {
-				if opt == subsystem {
-					return mount.Mountpoint, nil
-				}
-			}
-		}
-	}
-	return "", ErrNotFound
-}
-
-// Returns the relative path to the cgroup docker is running in.
-func GetThisCgroupDir(subsystem string) (string, error) {
-	f, err := os.Open("/proc/self/cgroup")
-	if err != nil {
-		return "", err
-	}
-	defer f.Close()
-
-	return parseCgroupFile(subsystem, f)
-}
-
-func GetInitCgroupDir(subsystem string) (string, error) {
-	f, err := os.Open("/proc/1/cgroup")
-	if err != nil {
-		return "", err
-	}
-	defer f.Close()
-
-	return parseCgroupFile(subsystem, f)
-}
-
-func parseCgroupFile(subsystem string, r io.Reader) (string, error) {
-	s := bufio.NewScanner(r)
-	for s.Scan() {
-		if err := s.Err(); err != nil {
-			return "", err
-		}
-		text := s.Text()
-		parts := strings.Split(text, ":")
-		for _, subs := range strings.Split(parts[1], ",") {
-			if subs == subsystem {
-				return parts[2], nil
-			}
-		}
-	}
-	return "", ErrNotFound
-}
-
-func writeFile(dir, file, data string) error {
-	return ioutil.WriteFile(filepath.Join(dir, file), []byte(data), 0700)
-}
-
-func (c *Cgroup) Apply(pid int) (ActiveCgroup, error) {
-	// We have two implementation of cgroups support, one is based on
-	// systemd and the dbus api, and one is based on raw cgroup fs operations
-	// following the pre-single-writer model docs at:
-	// http://www.freedesktop.org/wiki/Software/systemd/PaxControlGroups/
-
-	if useSystemd() {
-		return systemdApply(c, pid)
-	} else {
-		return rawApply(c, pid)
-	}
-}

pkg/cgroups/fs/apply_raw.go

@@ -0,0 +1,146 @@
+package fs
+
+import (
+	"fmt"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"strconv"
+
+	"github.com/dotcloud/docker/pkg/cgroups"
+)
+
+var (
+	subsystems = map[string]subsystem{
+		"devices":    &devicesGroup{},
+		"memory":     &memoryGroup{},
+		"cpu":        &cpuGroup{},
+		"cpuset":     &cpusetGroup{},
+		"cpuacct":    &cpuacctGroup{},
+		"blkio":      &blkioGroup{},
+		"perf_event": &perfEventGroup{},
+		"freezer":    &freezerGroup{},
+	}
+)
+
+type subsystem interface {
+	Set(*data) error
+	Remove(*data) error
+	Stats(*data) (map[string]float64, error)
+}
+
+type data struct {
+	root   string
+	cgroup string
+	c      *cgroups.Cgroup
+	pid    int
+}
+
+func Apply(c *cgroups.Cgroup, pid int) (cgroups.ActiveCgroup, error) {
+	// We have two implementation of cgroups support, one is based on
+	// systemd and the dbus api, and one is based on raw cgroup fs operations
+	// following the pre-single-writer model docs at:
+	// http://www.freedesktop.org/wiki/Software/systemd/PaxControlGroups/
+	//
+	// we can pick any subsystem to find the root
+
+	cgroupRoot, err := cgroups.FindCgroupMountpoint("cpu")
+	if err != nil {
+		return nil, err
+	}
+	cgroupRoot = filepath.Dir(cgroupRoot)
+
+	if _, err := os.Stat(cgroupRoot); err != nil {
+		return nil, fmt.Errorf("cgroups fs not found")
+	}
+
+	cgroup := c.Name
+	if c.Parent != "" {
+		cgroup = filepath.Join(c.Parent, cgroup)
+	}
+
+	d := &data{
+		root:   cgroupRoot,
+		cgroup: cgroup,
+		c:      c,
+		pid:    pid,
+	}
+	for _, sys := range subsystems {
+		if err := sys.Set(d); err != nil {
+			return nil, err
+		}
+	}
+	return d, nil
+}
+
+func GetStats(c *cgroups.Cgroup, subsystem string, pid int) (map[string]float64, error) {
+	cgroupRoot, err := cgroups.FindCgroupMountpoint("cpu")
+	if err != nil {
+		return nil, err
+	}
+	cgroupRoot = filepath.Dir(cgroupRoot)
+
+	if _, err := os.Stat(cgroupRoot); err != nil {
+		return nil, fmt.Errorf("cgroups fs not found")
+	}
+
+	cgroup := c.Name
+	if c.Parent != "" {
+		cgroup = filepath.Join(c.Parent, cgroup)
+	}
+
+	d := &data{
+		root:   cgroupRoot,
+		cgroup: cgroup,
+		c:      c,
+		pid:    pid,
+	}
+	sys, exists := subsystems[subsystem]
+	if !exists {
+		return nil, fmt.Errorf("subsystem %s does not exist", subsystem)
+	}
+	return sys.Stats(d)
+}
+
+func (raw *data) path(subsystem string) (string, error) {
+	initPath, err := cgroups.GetInitCgroupDir(subsystem)
+	if err != nil {
+		return "", err
+	}
+	return filepath.Join(raw.root, subsystem, initPath, raw.cgroup), nil
+}
+
+func (raw *data) join(subsystem string) (string, error) {
+	path, err := raw.path(subsystem)
+	if err != nil {
+		return "", err
+	}
+	if err := os.MkdirAll(path, 0755); err != nil && !os.IsExist(err) {
+		return "", err
+	}
+	if err := writeFile(path, "cgroup.procs", strconv.Itoa(raw.pid)); err != nil {
+		return "", err
+	}
+	return path, nil
+}
+
+func (raw *data) Cleanup() error {
+	for _, sys := range subsystems {
+		sys.Remove(raw)
+	}
+	return nil
+}
+
+func writeFile(dir, file, data string) error {
+	return ioutil.WriteFile(filepath.Join(dir, file), []byte(data), 0700)
+}
+
+func removePath(p string, err error) error {
+	if err != nil {
+		return err
+	}
+	if p != "" {
+		return os.RemoveAll(p)
+	}
+	return nil
+}

pkg/cgroups/fs/blkio.go

@@ -0,0 +1,121 @@
+package fs
+
+import (
+	"bufio"
+	"fmt"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"strconv"
+	"strings"
+
+	"github.com/dotcloud/docker/pkg/cgroups"
+)
+
+type blkioGroup struct {
+}
+
+func (s *blkioGroup) Set(d *data) error {
+	// we just want to join this group even though we don't set anything
+	if _, err := d.join("blkio"); err != nil && err != cgroups.ErrNotFound {
+		return err
+	}
+	return nil
+}
+
+func (s *blkioGroup) Remove(d *data) 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 (s *blkioGroup) Stats(d *data) (map[string]float64, error) {
+	var (
+		paramData = make(map[string]float64)
+		params    = []string{
+			"io_service_bytes_recursive",
+			"io_serviced_recursive",
+			"io_queued_recursive",
+		}
+	)
+
+	path, err := d.path("blkio")
+	if err != nil {
+		return nil, err
+	}
+
+	k, v, err := s.getSectors(path)
+	if err != nil {
+		return nil, err
+	}
+	paramData[fmt.Sprintf("blkio.sectors_recursive:%s", k)] = v
+
+	for _, param := range params {
+		f, err := os.Open(filepath.Join(path, fmt.Sprintf("blkio.%s", param)))
+		if err != nil {
+			return nil, err
+		}
+		defer f.Close()
+
+		sc := bufio.NewScanner(f)
+		for sc.Scan() {
+			// format: dev type amount
+			fields := strings.Fields(sc.Text())
+			switch len(fields) {
+			case 3:
+				v, err := strconv.ParseFloat(fields[2], 64)
+				if err != nil {
+					return nil, err
+				}
+				paramData[fmt.Sprintf("%s:%s:%s", param, fields[0], fields[1])] = v
+			case 2:
+				// this is the total line, skip
+			default:
+				return nil, ErrNotValidFormat
+			}
+		}
+	}
+	return paramData, nil
+}
+
+func (s *blkioGroup) getSectors(path string) (string, float64, error) {
+	f, err := os.Open(filepath.Join(path, "blkio.sectors_recursive"))
+	if err != nil {
+		return "", 0, err
+	}
+	defer f.Close()
+
+	data, err := ioutil.ReadAll(f)
+	if err != nil {
+		return "", 0, err
+	}
+	return getCgroupParamKeyValue(string(data))
+}

pkg/cgroups/fs/cpu.go

@@ -0,0 +1,33 @@
+package fs
+
+import (
+	"strconv"
+)
+
+type cpuGroup struct {
+}
+
+func (s *cpuGroup) Set(d *data) error {
+	// We always want to join the cpu group, to allow fair cpu scheduling
+	// on a container basis
+	dir, err := d.join("cpu")
+	if err != nil {
+		return err
+	}
+	if d.c.CpuShares != 0 {
+		if err := writeFile(dir, "cpu.shares", strconv.FormatInt(d.c.CpuShares, 10)); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func (s *cpuGroup) Remove(d *data) error {
+	return removePath(d.path("cpu"))
+}
+
+func (s *cpuGroup) Stats(d *data) (map[string]float64, error) {
+	// we can reuse the cpuacct subsystem to get the cpu stats
+	sys := subsystems["cpuacct"]
+	return sys.Stats(d)
+}

pkg/cgroups/fs/cpuacct.go

@@ -0,0 +1,131 @@
+package fs
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+	"path/filepath"
+	"runtime"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/dotcloud/docker/pkg/cgroups"
+	"github.com/dotcloud/docker/pkg/system"
+)
+
+var (
+	cpuCount   = float64(runtime.NumCPU())
+	clockTicks = float64(system.GetClockTicks())
+)
+
+type cpuacctGroup struct {
+}
+
+func (s *cpuacctGroup) Set(d *data) error {
+	// we just want to join this group even though we don't set anything
+	if _, err := d.join("cpuacct"); err != nil && err != cgroups.ErrNotFound {
+		return err
+	}
+	return nil
+}
+
+func (s *cpuacctGroup) Remove(d *data) error {
+	return removePath(d.path("cpuacct"))
+}
+
+func (s *cpuacctGroup) Stats(d *data) (map[string]float64, error) {
+	var (
+		startCpu, lastCpu, startSystem, lastSystem float64
+		percentage                                 float64
+		paramData                                  = make(map[string]float64)
+	)
+	path, err := d.path("cpuacct")
+	if startCpu, err = s.getCpuUsage(d, path); err != nil {
+		return nil, err
+	}
+	if startSystem, err = s.getSystemCpuUsage(d); err != nil {
+		return nil, err
+	}
+	// sample for 100ms
+	time.Sleep(100 * time.Millisecond)
+	if lastCpu, err = s.getCpuUsage(d, path); err != nil {
+		return nil, err
+	}
+	if lastSystem, err = s.getSystemCpuUsage(d); err != nil {
+		return nil, err
+	}
+
+	var (
+		deltaProc   = lastCpu - startCpu
+		deltaSystem = lastSystem - startSystem
+	)
+	if deltaSystem > 0.0 {
+		percentage = ((deltaProc / deltaSystem) * clockTicks) * cpuCount
+	}
+	// NOTE: a percentage over 100% is valid for POSIX because that means the
+	// processes is using multiple cores
+	paramData["percentage"] = percentage
+	return paramData, nil
+}
+
+func (s *cpuacctGroup) getProcStarttime(d *data) (float64, error) {
+	rawStart, err := system.GetProcessStartTime(d.pid)
+	if err != nil {
+		return 0, err
+	}
+	return strconv.ParseFloat(rawStart, 64)
+}
+
+func (s *cpuacctGroup) getSystemCpuUsage(d *data) (float64, error) {
+
+	f, err := os.Open("/proc/stat")
+	if err != nil {
+		return 0, err
+	}
+	defer f.Close()
+
+	sc := bufio.NewScanner(f)
+	for sc.Scan() {
+		parts := strings.Fields(sc.Text())
+		switch parts[0] {
+		case "cpu":
+			if len(parts) < 8 {
+				return 0, fmt.Errorf("invalid number of cpu fields")
+			}
+
+			var total float64
+			for _, i := range parts[1:8] {
+				v, err := strconv.ParseFloat(i, 64)
+				if err != nil {
+					return 0.0, fmt.Errorf("Unable to convert value %s to float: %s", i, err)
+				}
+				total += v
+			}
+			return total, nil
+		default:
+			continue
+		}
+	}
+	return 0, fmt.Errorf("invalid stat format")
+}
+
+func (s *cpuacctGroup) getCpuUsage(d *data, path string) (float64, error) {
+	cpuTotal := 0.0
+	f, err := os.Open(filepath.Join(path, "cpuacct.stat"))
+	if err != nil {
+		return 0.0, err
+	}
+	defer f.Close()
+
+	sc := bufio.NewScanner(f)
+	for sc.Scan() {
+		_, v, err := getCgroupParamKeyValue(sc.Text())
+		if err != nil {
+			return 0.0, err
+		}
+		// set the raw data in map
+		cpuTotal += v
+	}
+	return cpuTotal, nil
+}

pkg/cgroups/fs/cpuset.go

@@ -0,0 +1,36 @@
+package fs
+
+import (
+	"os"
+)
+
+type cpusetGroup struct {
+}
+
+func (s *cpusetGroup) Set(d *data) error {
+	// we don't want to join this cgroup unless it is specified
+	if d.c.CpusetCpus != "" {
+		dir, err := d.join("cpuset")
+		if err != nil && d.c.CpusetCpus != "" {
+			return err
+		}
+		defer func() {
+			if err != nil {
+				os.RemoveAll(dir)
+			}
+		}()
+
+		if err := writeFile(dir, "cpuset.cpus", d.c.CpusetCpus); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func (s *cpusetGroup) Remove(d *data) error {
+	return removePath(d.path("cpuset"))
+}
+
+func (s *cpusetGroup) Stats(d *data) (map[string]float64, error) {
+	return nil, ErrNotSupportStat
+}

pkg/cgroups/fs/devices.go

@@ -0,0 +1,69 @@
+package fs
+
+import (
+	"os"
+)
+
+type devicesGroup struct {
+}
+
+func (s *devicesGroup) Set(d *data) error {
+	dir, err := d.join("devices")
+	if err != nil {
+		return err
+	}
+	defer func() {
+		if err != nil {
+			os.RemoveAll(dir)
+		}
+	}()
+
+	if !d.c.DeviceAccess {
+		if err := writeFile(dir, "devices.deny", "a"); err != nil {
+			return err
+		}
+
+		allow := []string{
+			// allow mknod for any device
+			"c *:* m",
+			"b *:* m",
+
+			// /dev/null, zero, full
+			"c 1:3 rwm",
+			"c 1:5 rwm",
+			"c 1:7 rwm",
+
+			// consoles
+			"c 5:1 rwm",
+			"c 5:0 rwm",
+			"c 4:0 rwm",
+			"c 4:1 rwm",
+
+			// /dev/urandom,/dev/random
+			"c 1:9 rwm",
+			"c 1:8 rwm",
+
+			// /dev/pts/ - pts namespaces are "coming soon"
+			"c 136:* rwm",
+			"c 5:2 rwm",
+
+			// tuntap
+			"c 10:200 rwm",
+		}
+
+		for _, val := range allow {
+			if err := writeFile(dir, "devices.allow", val); err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
+
+func (s *devicesGroup) Remove(d *data) error {
+	return removePath(d.path("devices"))
+}
+
+func (s *devicesGroup) Stats(d *data) (map[string]float64, error) {
+	return nil, ErrNotSupportStat
+}

pkg/cgroups/fs/freezer.go

@@ -0,0 +1,62 @@
+package fs
+
+import (
+	"fmt"
+	"github.com/dotcloud/docker/pkg/cgroups"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"strconv"
+	"strings"
+)
+
+type freezerGroup struct {
+}
+
+func (s *freezerGroup) Set(d *data) error {
+	// we just want to join this group even though we don't set anything
+	if _, err := d.join("freezer"); err != nil && err != cgroups.ErrNotFound {
+		return err
+	}
+	return nil
+}
+
+func (s *freezerGroup) Remove(d *data) error {
+	return removePath(d.path("freezer"))
+}
+
+func (s *freezerGroup) Stats(d *data) (map[string]float64, error) {
+	var (
+		paramData = make(map[string]float64)
+		params    = []string{
+			"parent_freezing",
+			"self_freezing",
+			// comment out right now because this is string "state",
+		}
+	)
+
+	path, err := d.path("freezer")
+	if err != nil {
+		return nil, err
+	}
+
+	for _, param := range params {
+		f, err := os.Open(filepath.Join(path, fmt.Sprintf("freezer.%s", param)))
+		if err != nil {
+			return nil, err
+		}
+		defer f.Close()
+
+		data, err := ioutil.ReadAll(f)
+		if err != nil {
+			return nil, err
+		}
+
+		v, err := strconv.ParseFloat(strings.TrimSuffix(string(data), "\n"), 64)
+		if err != nil {
+			return nil, err
+		}
+		paramData[param] = v
+	}
+	return paramData, nil
+}

pkg/cgroups/fs/memory.go

@@ -0,0 +1,71 @@
+package fs
+
+import (
+	"bufio"
+	"os"
+	"path/filepath"
+	"strconv"
+)
+
+type memoryGroup struct {
+}
+
+func (s *memoryGroup) Set(d *data) error {
+	dir, err := d.join("memory")
+	// only return an error for memory if it was not specified
+	if err != nil && (d.c.Memory != 0 || d.c.MemorySwap != 0) {
+		return err
+	}
+	defer func() {
+		if err != nil {
+			os.RemoveAll(dir)
+		}
+	}()
+
+	if d.c.Memory != 0 || d.c.MemorySwap != 0 {
+		if d.c.Memory != 0 {
+			if err := writeFile(dir, "memory.limit_in_bytes", strconv.FormatInt(d.c.Memory, 10)); err != nil {
+				return err
+			}
+			if err := writeFile(dir, "memory.soft_limit_in_bytes", strconv.FormatInt(d.c.Memory, 10)); err != nil {
+				return err
+			}
+		}
+		// By default, MemorySwap is set to twice the size of RAM.
+		// If you want to omit MemorySwap, set it to `-1'.
+		if d.c.MemorySwap != -1 {
+			if err := writeFile(dir, "memory.memsw.limit_in_bytes", strconv.FormatInt(d.c.Memory*2, 10)); err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
+
+func (s *memoryGroup) Remove(d *data) error {
+	return removePath(d.path("memory"))
+}
+
+func (s *memoryGroup) Stats(d *data) (map[string]float64, error) {
+	paramData := make(map[string]float64)
+	path, err := d.path("memory")
+	if err != nil {
+		return nil, err
+	}
+
+	f, err := os.Open(filepath.Join(path, "memory.stat"))
+	if err != nil {
+		return nil, err
+	}
+	defer f.Close()
+
+	sc := bufio.NewScanner(f)
+	for sc.Scan() {
+		t, v, err := getCgroupParamKeyValue(sc.Text())
+		if err != nil {
+			return nil, err
+		}
+		paramData[t] = v
+	}
+	return paramData, nil
+}

pkg/cgroups/fs/perf_event.go

@@ -0,0 +1,24 @@
+package fs
+
+import (
+	"github.com/dotcloud/docker/pkg/cgroups"
+)
+
+type perfEventGroup struct {
+}
+
+func (s *perfEventGroup) Set(d *data) error {
+	// we just want to join this group even though we don't set anything
+	if _, err := d.join("perf_event"); err != nil && err != cgroups.ErrNotFound {
+		return err
+	}
+	return nil
+}
+
+func (s *perfEventGroup) Remove(d *data) error {
+	return removePath(d.path("perf_event"))
+}
+
+func (s *perfEventGroup) Stats(d *data) (map[string]float64, error) {
+	return nil, ErrNotSupportStat
+}

pkg/cgroups/fs/utils.go

@@ -0,0 +1,29 @@
+package fs
+
+import (
+	"errors"
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+var (
+	ErrNotSupportStat = errors.New("stats are not supported for subsystem")
+	ErrNotValidFormat = errors.New("line is not a valid key value format")
+)
+
+// 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, float64, error) {
+	parts := strings.Fields(t)
+	switch len(parts) {
+	case 2:
+		value, err := strconv.ParseFloat(parts[1], 64)
+		if err != nil {
+			return "", 0.0, fmt.Errorf("Unable to convert param value to float: %s", err)
+		}
+		return parts[0], value, nil
+	default:
+		return "", 0.0, ErrNotValidFormat
+	}
+}

pkg/cgroups/systemd/apply_nosystemd.go

@@ -0,0 +1,16 @@
+// +build !linux
+
+package systemd
+
+import (
+	"fmt"
+	"github.com/dotcloud/docker/pkg/cgroups"
+)
+
+func UseSystemd() bool {
+	return false
+}
+
+func systemdApply(c *Cgroup, pid int) (cgroups.ActiveCgroup, error) {
+	return nil, fmt.Errorf("Systemd not supported")
+}

pkg/cgroups/systemd/apply_systemd.go

@@ -1,27 +1,35 @@
 // +build linux
 
-package cgroups
+package systemd
 
 import (
 	"fmt"
-	systemd1 "github.com/coreos/go-systemd/dbus"
-	"github.com/dotcloud/docker/pkg/systemd"
-	"github.com/godbus/dbus"
+	"io/ioutil"
 	"path/filepath"
 	"strings"
 	"sync"
+
+	systemd1 "github.com/coreos/go-systemd/dbus"
+	"github.com/dotcloud/docker/pkg/cgroups"
+	"github.com/dotcloud/docker/pkg/systemd"
+	"github.com/godbus/dbus"
 )
 
 type systemdCgroup struct {
 }
 
+type DeviceAllow struct {
+	Node        string
+	Permissions string
+}
+
 var (
 	connLock              sync.Mutex
 	theConn               *systemd1.Conn
 	hasStartTransientUnit bool
 )
 
-func useSystemd() bool {
+func UseSystemd() bool {
 	if !systemd.SdBooted() {
 		return false
 	}
@@ -48,15 +56,9 @@ func useSystemd() bool {
 			}
 		}
 	}
-
 	return hasStartTransientUnit
 }
 
-type DeviceAllow struct {
-	Node        string
-	Permissions string
-}
-
 func getIfaceForUnit(unitName string) string {
 	if strings.HasSuffix(unitName, ".scope") {
 		return "Scope"
@@ -67,11 +69,12 @@ func getIfaceForUnit(unitName string) string {
 	return "Unit"
 }
 
-func systemdApply(c *Cgroup, pid int) (ActiveCgroup, error) {
-	unitName := c.Parent + "-" + c.Name + ".scope"
-	slice := "system.slice"
-
-	var properties []systemd1.Property
+func Apply(c *cgroups.Cgroup, pid int) (cgroups.ActiveCgroup, error) {
+	var (
+		unitName   = c.Parent + "-" + c.Name + ".scope"
+		slice      = "system.slice"
+		properties []systemd1.Property
+	)
 
 	for _, v := range c.UnitProperties {
 		switch v[0] {
@@ -85,7 +88,8 @@ func systemdApply(c *Cgroup, pid int) (ActiveCgroup, error) {
 	properties = append(properties,
 		systemd1.Property{"Slice", dbus.MakeVariant(slice)},
 		systemd1.Property{"Description", dbus.MakeVariant("docker container " + c.Name)},
-		systemd1.Property{"PIDs", dbus.MakeVariant([]uint32{uint32(pid)})})
+		systemd1.Property{"PIDs", dbus.MakeVariant([]uint32{uint32(pid)})},
+	)
 
 	if !c.DeviceAccess {
 		properties = append(properties,
@@ -138,7 +142,7 @@ func systemdApply(c *Cgroup, pid int) (ActiveCgroup, error) {
 	cgroup := props["ControlGroup"].(string)
 
 	if !c.DeviceAccess {
-		mountpoint, err := FindCgroupMountpoint("devices")
+		mountpoint, err := cgroups.FindCgroupMountpoint("devices")
 		if err != nil {
 			return nil, err
 		}
@@ -146,15 +150,14 @@ func systemdApply(c *Cgroup, pid int) (ActiveCgroup, error) {
 		path := filepath.Join(mountpoint, cgroup)
 
 		// /dev/pts/*
-		if err := writeFile(path, "devices.allow", "c 136:* rwm"); err != nil {
+		if err := ioutil.WriteFile(filepath.Join(path, "devices.allow"), []byte("c 136:* rwm"), 0700); err != nil {
 			return nil, err
 		}
 		// tuntap
-		if err := writeFile(path, "devices.allow", "c 10:200 rwm"); err != nil {
+		if err := ioutil.WriteFile(filepath.Join(path, "devices.allow"), []byte("c 10:200 rwm"), 0700); err != nil {
 			return nil, err
 		}
 	}
-
 	return &systemdCgroup{}, nil
 }
 

pkg/cgroups/utils.go

@@ -0,0 +1,67 @@
+package cgroups
+
+import (
+	"bufio"
+	"io"
+	"os"
+	"strings"
+
+	"github.com/dotcloud/docker/pkg/mount"
+)
+
+// https://www.kernel.org/doc/Documentation/cgroups/cgroups.txt
+func FindCgroupMountpoint(subsystem string) (string, error) {
+	mounts, err := mount.GetMounts()
+	if err != nil {
+		return "", err
+	}
+
+	for _, mount := range mounts {
+		if mount.Fstype == "cgroup" {
+			for _, opt := range strings.Split(mount.VfsOpts, ",") {
+				if opt == subsystem {
+					return mount.Mountpoint, nil
+				}
+			}
+		}
+	}
+	return "", ErrNotFound
+}
+
+// Returns the relative path to the cgroup docker is running in.
+func GetThisCgroupDir(subsystem string) (string, error) {
+	f, err := os.Open("/proc/self/cgroup")
+	if err != nil {
+		return "", err
+	}
+	defer f.Close()
+
+	return parseCgroupFile(subsystem, f)
+}
+
+func GetInitCgroupDir(subsystem string) (string, error) {
+	f, err := os.Open("/proc/1/cgroup")
+	if err != nil {
+		return "", err
+	}
+	defer f.Close()
+
+	return parseCgroupFile(subsystem, f)
+}
+
+func parseCgroupFile(subsystem string, r io.Reader) (string, error) {
+	s := bufio.NewScanner(r)
+	for s.Scan() {
+		if err := s.Err(); err != nil {
+			return "", err
+		}
+		text := s.Text()
+		parts := strings.Split(text, ":")
+		for _, subs := range strings.Split(parts[1], ",") {
+			if subs == subsystem {
+				return parts[2], nil
+			}
+		}
+	}
+	return "", ErrNotFound
+}

pkg/graphdb/conn_sqlite3.go

@@ -1,4 +1,4 @@
-// +build amd64
+// +build linux,amd64 freebsd,cgo
 
 package graphdb
 

pkg/graphdb/conn_unsupported.go

@@ -1,4 +1,4 @@
-// +build !linux !amd64
+// +build !linux,!freebsd linux,!amd64 freebsd,!cgo
 
 package graphdb
 

pkg/libcontainer/apparmor/setup.go

@@ -1,128 +0,0 @@
-package apparmor
-
-import (
-	"fmt"
-	"io"
-	"io/ioutil"
-	"os"
-	"os/exec"
-	"path"
-)
-
-const (
-	DefaultProfilePath = "/etc/apparmor.d/docker"
-)
-
-const DefaultProfile = `
-# AppArmor profile from lxc for containers.
-
-#include <tunables/global>
-profile docker-default flags=(attach_disconnected,mediate_deleted) {
-  #include <abstractions/base>
-  network,
-  capability,
-  file,
-  umount,
-
-  # ignore DENIED message on / remount
-  deny mount options=(ro, remount) -> /,
-
-  # allow tmpfs mounts everywhere
-  mount fstype=tmpfs,
-
-  # allow mqueue mounts everywhere
-  mount fstype=mqueue,
-
-  # allow fuse mounts everywhere
-  mount fstype=fuse.*,
-
-  # allow bind mount of /lib/init/fstab for lxcguest
-  mount options=(rw, bind) /lib/init/fstab.lxc/ -> /lib/init/fstab/,
-
-  # deny writes in /proc/sys/fs but allow binfmt_misc to be mounted
-  mount fstype=binfmt_misc -> /proc/sys/fs/binfmt_misc/,
-  deny @{PROC}/sys/fs/** wklx,
-
-  # allow efivars to be mounted, writing to it will be blocked though
-  mount fstype=efivarfs -> /sys/firmware/efi/efivars/,
-
-  # block some other dangerous paths
-  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 writes in /sys except for /sys/fs/cgroup, also allow
-  # fusectl, securityfs and debugfs to be mounted there (read-only)
-  mount fstype=fusectl -> /sys/fs/fuse/connections/,
-  mount fstype=securityfs -> /sys/kernel/security/,
-  mount fstype=debugfs -> /sys/kernel/debug/,
-  deny mount fstype=debugfs -> /var/lib/ureadahead/debugfs/,
-  mount fstype=proc -> /proc/,
-  mount fstype=sysfs -> /sys/,
-  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,
-  mount options=(move) /sys/fs/cgroup/cgmanager/ -> /sys/fs/cgroup/cgmanager.lower/,
-
-  # the container may never be allowed to mount devpts.  If it does, it
-  # will remount the host's devpts.  We could allow it to do it with
-  # the newinstance option (but, right now, we don't).
-  deny mount fstype=devpts,
-}
-`
-
-func InstallDefaultProfile(backupPath string) error {
-	if !IsEnabled() {
-		return nil
-	}
-
-	// If the profile already exists, check if we already have a backup
-	// if not, do the backup and override it. (docker 0.10 upgrade changed the apparmor profile)
-	// see gh#5049, apparmor blocks signals in ubuntu 14.04
-	if _, err := os.Stat(DefaultProfilePath); err == nil {
-		if _, err := os.Stat(backupPath); err == nil {
-			// If both the profile and the backup are present, do nothing
-			return nil
-		}
-		// Make sure the directory exists
-		if err := os.MkdirAll(path.Dir(backupPath), 0755); err != nil {
-			return err
-		}
-
-		// Create the backup file
-		f, err := os.Create(backupPath)
-		if err != nil {
-			return err
-		}
-		defer f.Close()
-		src, err := os.Open(DefaultProfilePath)
-		if err != nil {
-			return err
-		}
-		defer src.Close()
-		if _, err := io.Copy(f, src); err != nil {
-			return err
-		}
-	}
-
-	// Make sure /etc/apparmor.d exists
-	if err := os.MkdirAll(path.Dir(DefaultProfilePath), 0755); err != nil {
-		return err
-	}
-
-	if err := ioutil.WriteFile(DefaultProfilePath, []byte(DefaultProfile), 0644); err != nil {
-		return err
-	}
-
-	output, err := exec.Command("/lib/init/apparmor-profile-load", "docker").CombinedOutput()
-	if err != nil {
-		return fmt.Errorf("Error loading docker profile: %s (%s)", err, output)
-	}
-	return nil
-}

pkg/libcontainer/nsinit/exec.go

@@ -8,6 +8,8 @@ import (
 	"syscall"
 
 	"github.com/dotcloud/docker/pkg/cgroups"
+	"github.com/dotcloud/docker/pkg/cgroups/fs"
+	"github.com/dotcloud/docker/pkg/cgroups/systemd"
 	"github.com/dotcloud/docker/pkg/libcontainer"
 	"github.com/dotcloud/docker/pkg/libcontainer/network"
 	"github.com/dotcloud/docker/pkg/system"
@@ -99,7 +101,11 @@ func (ns *linuxNs) Exec(container *libcontainer.Container, term Terminal, args [
 
 func (ns *linuxNs) SetupCgroups(container *libcontainer.Container, nspid int) (cgroups.ActiveCgroup, error) {
 	if container.Cgroups != nil {
-		return container.Cgroups.Apply(nspid)
+		c := container.Cgroups
+		if systemd.UseSystemd() {
+			return systemd.Apply(c, nspid)
+		}
+		return fs.Apply(c, nspid)
 	}
 	return nil, nil
 }

pkg/libcontainer/nsinit/init.go

@@ -8,9 +8,9 @@ import (
 	"runtime"
 	"syscall"
 
+	"github.com/dotcloud/docker/pkg/apparmor"
 	"github.com/dotcloud/docker/pkg/label"
 	"github.com/dotcloud/docker/pkg/libcontainer"
-	"github.com/dotcloud/docker/pkg/libcontainer/apparmor"
 	"github.com/dotcloud/docker/pkg/libcontainer/capabilities"
 	"github.com/dotcloud/docker/pkg/libcontainer/network"
 	"github.com/dotcloud/docker/pkg/libcontainer/utils"

pkg/system/sysconfig.go

@@ -0,0 +1,13 @@
+// +build linux,cgo
+
+package system
+
+/*
+#include <unistd.h>
+int get_hz(void) { return sysconf(_SC_CLK_TCK); }
+*/
+import "C"
+
+func GetClockTicks() int {
+	return int(C.get_hz())
+}

pkg/system/sysconfig_nocgo.go

@@ -0,0 +1,9 @@
+// +build linux,!cgo
+
+package system
+
+func GetClockTicks() int {
+	// when we cannot call out to C to get the sysconf it is fairly safe to
+	// just return 100
+	return 100
+}

pkg/system/unsupported.go

@@ -17,3 +17,9 @@ func UsetCloseOnExec(fd uintptr) error {
 func Gettid() int {
 	return 0
 }
+
+func GetClockTicks() int {
+	// when we cannot call out to C to get the sysconf it is fairly safe to
+	// just return 100
+	return 100
+}

server/MAINTAINERS

@@ -0,0 +1 @@
+Solomon Hykes <solomon@docker.com>

server/server.go

@@ -1,3 +1,24 @@
+// DEPRECATION NOTICE. PLEASE DO NOT ADD ANYTHING TO THIS FILE.
+//
+// server/server.go is deprecated. We are working on breaking it up into smaller, cleaner
+// pieces which will be easier to find and test. This will help make the code less
+// redundant and more readable.
+//
+// Contributors, please don't add anything to server/server.go, unless it has the explicit
+// goal of helping the deprecation effort.
+//
+// Maintainers, please refuse patches which add code to server/server.go.
+//
+// Instead try the following files:
+// * For code related to local image management, try graph/
+// * For code related to image downloading, uploading, remote search etc, try registry/
+// * For code related to the docker daemon, try daemon/
+// * For small utilities which could potentially be useful outside of Docker, try pkg/
+// * For miscalleneous "util" functions which are docker-specific, try encapsulating them
+//     inside one of the subsystems above. If you really think they should be more widely
+//     available, are you sure you can't remove the docker dependencies and move them to
+//     pkg? In last resort, you can add them to utils/ (but please try not to).
+
 package server
 
 import (