Vendor dependencies

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

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

@@ -0,0 +1,62 @@
+// +build linux
+
+package libcontainer
+
+import (
+	"syscall"
+
+	"github.com/vishvananda/netlink/nl"
+)
+
+// list of known message types we want to send to bootstrap program
+// The number is randomly chosen to not conflict with known netlink types
+const (
+	InitMsg         uint16 = 62000
+	PidAttr         uint16 = 27281
+	ConsolePathAttr uint16 = 27282
+	// When syscall.NLA_HDRLEN is in gccgo, take this out.
+	syscall_NLA_HDRLEN = (syscall.SizeofNlAttr + syscall.NLA_ALIGNTO - 1) & ^(syscall.NLA_ALIGNTO - 1)
+)
+
+type Int32msg struct {
+	Type  uint16
+	Value uint32
+}
+
+// int32msg has the following representation
+// | nlattr len | nlattr type |
+// | uint32 value             |
+func (msg *Int32msg) Serialize() []byte {
+	buf := make([]byte, msg.Len())
+	native := nl.NativeEndian()
+	native.PutUint16(buf[0:2], uint16(msg.Len()))
+	native.PutUint16(buf[2:4], msg.Type)
+	native.PutUint32(buf[4:8], msg.Value)
+	return buf
+}
+
+func (msg *Int32msg) Len() int {
+	return syscall_NLA_HDRLEN + 4
+}
+
+// bytemsg has the following representation
+// | nlattr len | nlattr type |
+// | value              | pad |
+type Bytemsg struct {
+	Type  uint16
+	Value []byte
+}
+
+func (msg *Bytemsg) Serialize() []byte {
+	l := msg.Len()
+	buf := make([]byte, (l+syscall.NLA_ALIGNTO-1) & ^(syscall.NLA_ALIGNTO-1))
+	native := nl.NativeEndian()
+	native.PutUint16(buf[0:2], uint16(l))
+	native.PutUint16(buf[2:4], msg.Type)
+	copy(buf[4:], msg.Value)
+	return buf
+}
+
+func (msg *Bytemsg) Len() int {
+	return syscall_NLA_HDRLEN + len(msg.Value) + 1 // null-terminated
+}