bump runc@b263a43430ac6996a4302b891688544225197294

Signed-off-by: Antonio Murdaca <runcom@redhat.com>

vendor/github.com/opencontainers/runc/libcontainer/console.go

@@ -1,15 +1,73 @@
 package libcontainer
 
-import "io"
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"os"
+)
 
 // Console represents a pseudo TTY.
 type Console interface {
-	io.ReadWriter
-	io.Closer
+	io.ReadWriteCloser
 
 	// Path returns the filesystem path to the slave side of the pty.
 	Path() string
 
 	// Fd returns the fd for the master of the pty.
-	Fd() uintptr
+	File() *os.File
+}
+
+const (
+	TerminalInfoVersion uint32 = 201610041
+	TerminalInfoType    uint8  = 'T'
+)
+
+// TerminalInfo is the structure which is passed as the non-ancillary data
+// in the sendmsg(2) call when runc is run with --console-socket. It
+// contains some information about the container which the console master fd
+// relates to (to allow for consumers to use a single unix socket to handle
+// multiple containers). This structure will probably move to runtime-spec
+// at some point. But for now it lies in libcontainer.
+type TerminalInfo struct {
+	// Version of the API.
+	Version uint32 `json:"version"`
+
+	// Type of message (future proofing).
+	Type uint8 `json:"type"`
+
+	// Container contains the ID of the container.
+	ContainerID string `json:"container_id"`
+}
+
+func (ti *TerminalInfo) String() string {
+	encoded, err := json.Marshal(*ti)
+	if err != nil {
+		panic(err)
+	}
+	return string(encoded)
+}
+
+func NewTerminalInfo(containerId string) *TerminalInfo {
+	return &TerminalInfo{
+		Version:     TerminalInfoVersion,
+		Type:        TerminalInfoType,
+		ContainerID: containerId,
+	}
+}
+
+func GetTerminalInfo(encoded string) (*TerminalInfo, error) {
+	ti := new(TerminalInfo)
+	if err := json.Unmarshal([]byte(encoded), ti); err != nil {
+		return nil, err
+	}
+
+	if ti.Type != TerminalInfoType {
+		return nil, fmt.Errorf("terminal info: incorrect type in payload (%q): %q", TerminalInfoType, ti.Type)
+	}
+	if ti.Version != TerminalInfoVersion {
+		return nil, fmt.Errorf("terminal info: incorrect version in payload (%q): %q", TerminalInfoVersion, ti.Version)
+	}
+
+	return ti, nil
 }