Update godeps

vendor/github.com/opencontainers/runc/libcontainer/configs/cgroup_unix.go

@@ -11,15 +11,22 @@ const (
 )
 
 type Cgroup struct {
-	Name string `json:"name"`
+	// Deprecated, use Path instead
+	Name string `json:"name,omitempty"`
 
-	// name of parent cgroup or slice
-	Parent string `json:"parent"`
+	// name of parent of cgroup or slice
+	// Deprecated, use Path instead
+	Parent string `json:"parent,omitempty"`
+
+	// Path specifies the path to cgroups that are created and/or joined by the container.
+	// The path is assumed to be relative to the host system cgroup mountpoint.
+	Path string `json:"path"`
 
 	// ScopePrefix decribes prefix for the scope name
 	ScopePrefix string `json:"scope_prefix"`
 
-	// Paths represent the cgroups paths to join
+	// Paths represent the absolute cgroups paths to join.
+	// This takes precedence over Path.
 	Paths map[string]string
 
 	// Resources contains various cgroups settings to apply
@@ -28,11 +35,14 @@ type Cgroup struct {
 
 type Resources struct {
 	// If this is true allow access to any kind of device within the container.  If false, allow access only to devices explicitly listed in the allowed_devices list.
-	AllowAllDevices bool `json:"allow_all_devices"`
+	// Deprecated
+	AllowAllDevices bool `json:"allow_all_devices,omitempty"`
+	// Deprecated
+	AllowedDevices []*Device `json:"allowed_devices,omitempty"`
+	// Deprecated
+	DeniedDevices []*Device `json:"denied_devices,omitempty"`
 
-	AllowedDevices []*Device `json:"allowed_devices"`
-
-	DeniedDevices []*Device `json:"denied_devices"`
+	Devices []*Device `json:"devices"`
 
 	// Memory limit (in bytes)
 	Memory int64 `json:"memory"`
@@ -46,6 +56,9 @@ type Resources struct {
 	// Kernel memory limit (in bytes)
 	KernelMemory int64 `json:"kernel_memory"`
 
+	// Kernel memory limit for TCP use (in bytes)
+	KernelMemoryTCP int64 `json:"kernel_memory_tcp"`
+
 	// CPU shares (relative weight vs. other containers)
 	CpuShares int64 `json:"cpu_shares"`
 
@@ -101,7 +114,7 @@ type Resources struct {
 	OomKillDisable bool `json:"oom_kill_disable"`
 
 	// Tuning swappiness behaviour per cgroup
-	MemorySwappiness int64 `json:"memory_swappiness"`
+	MemorySwappiness *int64 `json:"memory_swappiness"`
 
 	// Set priority of network traffic for container
 	NetPrioIfpriomap []*IfPrioMap `json:"net_prio_ifpriomap"`

vendor/github.com/opencontainers/runc/libcontainer/configs/config.go

@@ -3,7 +3,11 @@ package configs
 import (
 	"bytes"
 	"encoding/json"
+	"fmt"
 	"os/exec"
+	"time"
+
+	"github.com/Sirupsen/logrus"
 )
 
 type Rlimit struct {
@@ -29,7 +33,7 @@ type Seccomp struct {
 	Syscalls      []*Syscall `json:"syscalls"`
 }
 
-// An action to be taken upon rule match in Seccomp
+// Action is taken upon rule match in Seccomp
 type Action int
 
 const (
@@ -40,7 +44,7 @@ const (
 	Trace
 )
 
-// A comparison operator to be used when matching syscall arguments in Seccomp
+// Operator is a comparison operator to be used when matching syscall arguments in Seccomp
 type Operator int
 
 const (
@@ -53,7 +57,7 @@ const (
 	MaskEqualTo
 )
 
-// A rule to match a specific syscall argument in Seccomp
+// Arg is a rule to match a specific syscall argument in Seccomp
 type Arg struct {
 	Index    uint     `json:"index"`
 	Value    uint64   `json:"value"`
@@ -61,7 +65,7 @@ type Arg struct {
 	Op       Operator `json:"op"`
 }
 
-// An rule to match a syscall in Seccomp
+// Syscall is a rule to match a syscall in Seccomp
 type Syscall struct {
 	Name   string `json:"name"`
 	Action Action `json:"action"`
@@ -128,15 +132,15 @@ type Config struct {
 
 	// AppArmorProfile specifies the profile to apply to the process running in the container and is
 	// change at the time the process is execed
-	AppArmorProfile string `json:"apparmor_profile"`
+	AppArmorProfile string `json:"apparmor_profile,omitempty"`
 
 	// ProcessLabel specifies the label to apply to the process running in the container.  It is
 	// commonly used by selinux
-	ProcessLabel string `json:"process_label"`
+	ProcessLabel string `json:"process_label,omitempty"`
 
 	// Rlimits specifies the resource limits, such as max open files, to set in the container
 	// If Rlimits are not set, the container will inherit rlimits from the parent process
-	Rlimits []Rlimit `json:"rlimits"`
+	Rlimits []Rlimit `json:"rlimits,omitempty"`
 
 	// OomScoreAdj specifies the adjustment to be made by the kernel when calculating oom scores
 	// for a process. Valid values are between the range [-1000, '1000'], where processes with
@@ -171,12 +175,22 @@ type Config struct {
 	// A default action to be taken if no rules match is also given.
 	Seccomp *Seccomp `json:"seccomp"`
 
+	// NoNewPrivileges controls whether processes in the container can gain additional privileges.
+	NoNewPrivileges bool `json:"no_new_privileges,omitempty"`
+
 	// Hooks are a collection of actions to perform at various container lifecycle events.
-	// Hooks are not able to be marshaled to json but they are also not needed to.
-	Hooks *Hooks `json:"-"`
+	// CommandHooks are serialized to JSON, but other hooks are not.
+	Hooks *Hooks
 
 	// Version is the version of opencontainer specification that is supported.
 	Version string `json:"version"`
+
+	// Labels are user defined metadata that is stored in the config and populated on the state
+	Labels []string `json:"labels"`
+
+	// NoNewKeyring will not allocated a new session keyring for the container.  It will use the
+	// callers keyring in this case.
+	NoNewKeyring bool `json:"no_new_keyring"`
 }
 
 type Hooks struct {
@@ -191,12 +205,59 @@ type Hooks struct {
 	Poststop []Hook
 }
 
+func (hooks *Hooks) UnmarshalJSON(b []byte) error {
+	var state struct {
+		Prestart  []CommandHook
+		Poststart []CommandHook
+		Poststop  []CommandHook
+	}
+
+	if err := json.Unmarshal(b, &state); err != nil {
+		return err
+	}
+
+	deserialize := func(shooks []CommandHook) (hooks []Hook) {
+		for _, shook := range shooks {
+			hooks = append(hooks, shook)
+		}
+
+		return hooks
+	}
+
+	hooks.Prestart = deserialize(state.Prestart)
+	hooks.Poststart = deserialize(state.Poststart)
+	hooks.Poststop = deserialize(state.Poststop)
+	return nil
+}
+
+func (hooks Hooks) MarshalJSON() ([]byte, error) {
+	serialize := func(hooks []Hook) (serializableHooks []CommandHook) {
+		for _, hook := range hooks {
+			switch chook := hook.(type) {
+			case CommandHook:
+				serializableHooks = append(serializableHooks, chook)
+			default:
+				logrus.Warnf("cannot serialize hook of type %T, skipping", hook)
+			}
+		}
+
+		return serializableHooks
+	}
+
+	return json.Marshal(map[string]interface{}{
+		"prestart":  serialize(hooks.Prestart),
+		"poststart": serialize(hooks.Poststart),
+		"poststop":  serialize(hooks.Poststop),
+	})
+}
+
 // HookState is the payload provided to a hook on execution.
 type HookState struct {
-	Version string `json:"version"`
-	ID      string `json:"id"`
-	Pid     int    `json:"pid"`
-	Root    string `json:"root"`
+	Version    string `json:"ociVersion"`
+	ID         string `json:"id"`
+	Pid        int    `json:"pid"`
+	Root       string `json:"root"`
+	BundlePath string `json:"bundlePath"`
 }
 
 type Hook interface {
@@ -204,7 +265,7 @@ type Hook interface {
 	Run(HookState) error
 }
 
-// NewFunctionHooks will call the provided function when the hook is run.
+// NewFunctionHook will call the provided function when the hook is run.
 func NewFunctionHook(f func(HookState) error) FuncHook {
 	return FuncHook{
 		run: f,
@@ -220,13 +281,14 @@ func (f FuncHook) Run(s HookState) error {
 }
 
 type Command struct {
-	Path string   `json:"path"`
-	Args []string `json:"args"`
-	Env  []string `json:"env"`
-	Dir  string   `json:"dir"`
+	Path    string         `json:"path"`
+	Args    []string       `json:"args"`
+	Env     []string       `json:"env"`
+	Dir     string         `json:"dir"`
+	Timeout *time.Duration `json:"timeout"`
 }
 
-// NewCommandHooks will execute the provided command when the hook is run.
+// NewCommandHook will execute the provided command when the hook is run.
 func NewCommandHook(cmd Command) CommandHook {
 	return CommandHook{
 		Command: cmd,
@@ -248,5 +310,23 @@ func (c Command) Run(s HookState) error {
 		Env:   c.Env,
 		Stdin: bytes.NewReader(b),
 	}
-	return cmd.Run()
+	errC := make(chan error, 1)
+	go func() {
+		out, err := cmd.CombinedOutput()
+		if err != nil {
+			err = fmt.Errorf("%s: %s", err, out)
+		}
+		errC <- err
+	}()
+	if c.Timeout != nil {
+		select {
+		case err := <-errC:
+			return err
+		case <-time.After(*c.Timeout):
+			cmd.Process.Kill()
+			cmd.Wait()
+			return fmt.Errorf("hook ran past specified timeout of %.1fs", c.Timeout.Seconds())
+		}
+	}
+	return <-errC
 }

vendor/github.com/opencontainers/runc/libcontainer/configs/config_unix.go

@@ -4,7 +4,7 @@ package configs
 
 import "fmt"
 
-// Gets the root uid for the process on host which could be non-zero
+// HostUID gets the root uid for the process on host which could be non-zero
 // when user namespaces are enabled.
 func (c Config) HostUID() (int, error) {
 	if c.Namespaces.Contains(NEWUSER) {
@@ -21,7 +21,7 @@ func (c Config) HostUID() (int, error) {
 	return 0, nil
 }
 
-// Gets the root gid for the process on host which could be non-zero
+// HostGID gets the root gid for the process on host which could be non-zero
 // when user namespaces are enabled.
 func (c Config) HostGID() (int, error) {
 	if c.Namespaces.Contains(NEWUSER) {

vendor/github.com/opencontainers/runc/libcontainer/configs/device.go

@@ -35,6 +35,9 @@ type Device struct {
 
 	// Gid of the device.
 	Gid uint32 `json:"gid"`
+
+	// Write the file to the allowed list
+	Allow bool `json:"allow"`
 }
 
 func (d *Device) CgroupString() string {

vendor/github.com/opencontainers/runc/libcontainer/configs/device_defaults.go

@@ -3,7 +3,7 @@
 package configs
 
 var (
-	// These are devices that are to be both allowed and created.
+	// DefaultSimpleDevices are devices that are to be both allowed and created.
 	DefaultSimpleDevices = []*Device{
 		// /dev/null and zero
 		{

vendor/github.com/opencontainers/runc/libcontainer/configs/namespaces_syscall.go

@@ -18,7 +18,7 @@ var namespaceInfo = map[NamespaceType]int{
 }
 
 // CloneFlags parses the container's Namespaces options to set the correct
-// flags on clone, unshare. This functions returns flags only for new namespaces.
+// flags on clone, unshare. This function returns flags only for new namespaces.
 func (n *Namespaces) CloneFlags() uintptr {
 	var flag int
 	for _, v := range *n {

vendor/github.com/opencontainers/runc/libcontainer/configs/namespaces_syscall_unsupported.go

@@ -8,7 +8,7 @@ func (n *Namespace) Syscall() int {
 }
 
 // CloneFlags parses the container's Namespaces options to set the correct
-// flags on clone, unshare. This functions returns flags only for new namespaces.
+// flags on clone, unshare. This function returns flags only for new namespaces.
 func (n *Namespaces) CloneFlags() uintptr {
 	panic("No namespace syscall support")
 	return uintptr(0)

vendor/github.com/opencontainers/runc/libcontainer/configs/namespaces_unix.go

@@ -2,7 +2,11 @@
 
 package configs
 
-import "fmt"
+import (
+	"fmt"
+	"os"
+	"sync"
+)
 
 const (
 	NEWNET  NamespaceType = "NEWNET"
@@ -13,6 +17,51 @@ const (
 	NEWUSER NamespaceType = "NEWUSER"
 )
 
+var (
+	nsLock              sync.Mutex
+	supportedNamespaces = make(map[NamespaceType]bool)
+)
+
+// nsToFile converts the namespace type to its filename
+func nsToFile(ns NamespaceType) string {
+	switch ns {
+	case NEWNET:
+		return "net"
+	case NEWNS:
+		return "mnt"
+	case NEWPID:
+		return "pid"
+	case NEWIPC:
+		return "ipc"
+	case NEWUSER:
+		return "user"
+	case NEWUTS:
+		return "uts"
+	}
+	return ""
+}
+
+// IsNamespaceSupported returns whether a namespace is available or
+// not
+func IsNamespaceSupported(ns NamespaceType) bool {
+	nsLock.Lock()
+	defer nsLock.Unlock()
+	supported, ok := supportedNamespaces[ns]
+	if ok {
+		return supported
+	}
+	nsFile := nsToFile(ns)
+	// if the namespace type is unknown, just return false
+	if nsFile == "" {
+		return false
+	}
+	_, err := os.Stat(fmt.Sprintf("/proc/self/ns/%s", nsFile))
+	// a namespace is supported if it exists and we have permissions to read it
+	supported = err == nil
+	supportedNamespaces[ns] = supported
+	return supported
+}
+
 func NamespaceTypes() []NamespaceType {
 	return []NamespaceType{
 		NEWNET,
@@ -35,26 +84,7 @@ func (n *Namespace) GetPath(pid int) string {
 	if n.Path != "" {
 		return n.Path
 	}
-	return fmt.Sprintf("/proc/%d/ns/%s", pid, n.file())
-}
-
-func (n *Namespace) file() string {
-	file := ""
-	switch n.Type {
-	case NEWNET:
-		file = "net"
-	case NEWNS:
-		file = "mnt"
-	case NEWPID:
-		file = "pid"
-	case NEWIPC:
-		file = "ipc"
-	case NEWUSER:
-		file = "user"
-	case NEWUTS:
-		file = "uts"
-	}
-	return file
+	return fmt.Sprintf("/proc/%d/ns/%s", pid, nsToFile(n.Type))
 }
 
 func (n *Namespaces) Remove(t NamespaceType) bool {
@@ -87,3 +117,11 @@ func (n *Namespaces) index(t NamespaceType) int {
 func (n *Namespaces) Contains(t NamespaceType) bool {
 	return n.index(t) != -1
 }
+
+func (n *Namespaces) PathOf(t NamespaceType) string {
+	i := n.index(t)
+	if i == -1 {
+		return ""
+	}
+	return (*n)[i].Path
+}