Add pause/unpause implementation

This adds pause and unpause to containerd's execution service and the
same commands to the `ctr` client.

Signed-off-by: Phil Estes <estesp@linux.vnet.ibm.com>

api/services/content/content.pb.go

@@ -2588,7 +2588,7 @@ func init() {
 
 var fileDescriptorContent = []byte{
 	// 768 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xb4, 0x55, 0x4f, 0x6f, 0xd3, 0x4e,
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0xb4, 0x55, 0x4f, 0x6f, 0xd3, 0x4e,
 	0x10, 0xcd, 0xe6, 0x8f, 0x7f, 0xcd, 0x24, 0xed, 0x2f, 0x6c, 0x43, 0x15, 0xb9, 0xad, 0x13, 0xc2,
 	0x25, 0xaa, 0x84, 0x53, 0xc2, 0x0d, 0x0e, 0xc8, 0x49, 0x4b, 0x55, 0xa4, 0x52, 0xc9, 0x8d, 0x54,
 	0x71, 0x42, 0x4e, 0xb2, 0x09, 0x96, 0x1a, 0xaf, 0xb1, 0x37, 0x55, 0xe1, 0xc4, 0x05, 0x09, 0xf5,

api/services/execution/execution.pb.go

@@ -23,6 +23,8 @@
 		ExecResponse
 		PtyRequest
 		CloseStdinRequest
+		PauseRequest
+		ResumeRequest
 */
 package execution
 
@@ -193,6 +195,22 @@ func (m *CloseStdinRequest) Reset()                    { *m = CloseStdinRequest{
 func (*CloseStdinRequest) ProtoMessage()               {}
 func (*CloseStdinRequest) Descriptor() ([]byte, []int) { return fileDescriptorExecution, []int{13} }
 
+type PauseRequest struct {
+	ID string `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
+}
+
+func (m *PauseRequest) Reset()                    { *m = PauseRequest{} }
+func (*PauseRequest) ProtoMessage()               {}
+func (*PauseRequest) Descriptor() ([]byte, []int) { return fileDescriptorExecution, []int{14} }
+
+type ResumeRequest struct {
+	ID string `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
+}
+
+func (m *ResumeRequest) Reset()                    { *m = ResumeRequest{} }
+func (*ResumeRequest) ProtoMessage()               {}
+func (*ResumeRequest) Descriptor() ([]byte, []int) { return fileDescriptorExecution, []int{15} }
+
 func init() {
 	proto.RegisterType((*CreateRequest)(nil), "containerd.v1.services.CreateRequest")
 	proto.RegisterType((*CreateResponse)(nil), "containerd.v1.services.CreateResponse")
@@ -208,6 +226,8 @@ func init() {
 	proto.RegisterType((*ExecResponse)(nil), "containerd.v1.services.ExecResponse")
 	proto.RegisterType((*PtyRequest)(nil), "containerd.v1.services.PtyRequest")
 	proto.RegisterType((*CloseStdinRequest)(nil), "containerd.v1.services.CloseStdinRequest")
+	proto.RegisterType((*PauseRequest)(nil), "containerd.v1.services.PauseRequest")
+	proto.RegisterType((*ResumeRequest)(nil), "containerd.v1.services.ResumeRequest")
 }
 
 // Reference imports to suppress errors if they are not otherwise used.
@@ -231,6 +251,8 @@ type ContainerServiceClient interface {
 	Exec(ctx context.Context, in *ExecRequest, opts ...grpc.CallOption) (*ExecResponse, error)
 	Pty(ctx context.Context, in *PtyRequest, opts ...grpc.CallOption) (*google_protobuf.Empty, error)
 	CloseStdin(ctx context.Context, in *CloseStdinRequest, opts ...grpc.CallOption) (*google_protobuf.Empty, error)
+	Pause(ctx context.Context, in *PauseRequest, opts ...grpc.CallOption) (*google_protobuf.Empty, error)
+	Resume(ctx context.Context, in *ResumeRequest, opts ...grpc.CallOption) (*google_protobuf.Empty, error)
 }
 
 type containerServiceClient struct {
@@ -354,6 +376,24 @@ func (c *containerServiceClient) CloseStdin(ctx context.Context, in *CloseStdinR
 	return out, nil
 }
 
+func (c *containerServiceClient) Pause(ctx context.Context, in *PauseRequest, opts ...grpc.CallOption) (*google_protobuf.Empty, error) {
+	out := new(google_protobuf.Empty)
+	err := grpc.Invoke(ctx, "/containerd.v1.services.ContainerService/Pause", in, out, c.cc, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *containerServiceClient) Resume(ctx context.Context, in *ResumeRequest, opts ...grpc.CallOption) (*google_protobuf.Empty, error) {
+	out := new(google_protobuf.Empty)
+	err := grpc.Invoke(ctx, "/containerd.v1.services.ContainerService/Resume", in, out, c.cc, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 // Server API for ContainerService service
 
 type ContainerServiceServer interface {
@@ -367,6 +407,8 @@ type ContainerServiceServer interface {
 	Exec(context.Context, *ExecRequest) (*ExecResponse, error)
 	Pty(context.Context, *PtyRequest) (*google_protobuf.Empty, error)
 	CloseStdin(context.Context, *CloseStdinRequest) (*google_protobuf.Empty, error)
+	Pause(context.Context, *PauseRequest) (*google_protobuf.Empty, error)
+	Resume(context.Context, *ResumeRequest) (*google_protobuf.Empty, error)
 }
 
 func RegisterContainerServiceServer(s *grpc.Server, srv ContainerServiceServer) {
@@ -556,6 +598,42 @@ func _ContainerService_CloseStdin_Handler(srv interface{}, ctx context.Context,
 	return interceptor(ctx, in, info, handler)
 }
 
+func _ContainerService_Pause_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(PauseRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(ContainerServiceServer).Pause(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/containerd.v1.services.ContainerService/Pause",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(ContainerServiceServer).Pause(ctx, req.(*PauseRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _ContainerService_Resume_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(ResumeRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(ContainerServiceServer).Resume(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/containerd.v1.services.ContainerService/Resume",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(ContainerServiceServer).Resume(ctx, req.(*ResumeRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 var _ContainerService_serviceDesc = grpc.ServiceDesc{
 	ServiceName: "containerd.v1.services.ContainerService",
 	HandlerType: (*ContainerServiceServer)(nil),
@@ -596,6 +674,14 @@ var _ContainerService_serviceDesc = grpc.ServiceDesc{
 			MethodName: "CloseStdin",
 			Handler:    _ContainerService_CloseStdin_Handler,
 		},
+		{
+			MethodName: "Pause",
+			Handler:    _ContainerService_Pause_Handler,
+		},
+		{
+			MethodName: "Resume",
+			Handler:    _ContainerService_Resume_Handler,
+		},
 	},
 	Streams: []grpc.StreamDesc{
 		{
@@ -1083,6 +1169,54 @@ func (m *CloseStdinRequest) MarshalTo(dAtA []byte) (int, error) {
 	return i, nil
 }
 
+func (m *PauseRequest) Marshal() (dAtA []byte, err error) {
+	size := m.Size()
+	dAtA = make([]byte, size)
+	n, err := m.MarshalTo(dAtA)
+	if err != nil {
+		return nil, err
+	}
+	return dAtA[:n], nil
+}
+
+func (m *PauseRequest) MarshalTo(dAtA []byte) (int, error) {
+	var i int
+	_ = i
+	var l int
+	_ = l
+	if len(m.ID) > 0 {
+		dAtA[i] = 0xa
+		i++
+		i = encodeVarintExecution(dAtA, i, uint64(len(m.ID)))
+		i += copy(dAtA[i:], m.ID)
+	}
+	return i, nil
+}
+
+func (m *ResumeRequest) Marshal() (dAtA []byte, err error) {
+	size := m.Size()
+	dAtA = make([]byte, size)
+	n, err := m.MarshalTo(dAtA)
+	if err != nil {
+		return nil, err
+	}
+	return dAtA[:n], nil
+}
+
+func (m *ResumeRequest) MarshalTo(dAtA []byte) (int, error) {
+	var i int
+	_ = i
+	var l int
+	_ = l
+	if len(m.ID) > 0 {
+		dAtA[i] = 0xa
+		i++
+		i = encodeVarintExecution(dAtA, i, uint64(len(m.ID)))
+		i += copy(dAtA[i:], m.ID)
+	}
+	return i, nil
+}
+
 func encodeFixed64Execution(dAtA []byte, offset int, v uint64) int {
 	dAtA[offset] = uint8(v)
 	dAtA[offset+1] = uint8(v >> 8)
@@ -1317,6 +1451,26 @@ func (m *CloseStdinRequest) Size() (n int) {
 	return n
 }
 
+func (m *PauseRequest) Size() (n int) {
+	var l int
+	_ = l
+	l = len(m.ID)
+	if l > 0 {
+		n += 1 + l + sovExecution(uint64(l))
+	}
+	return n
+}
+
+func (m *ResumeRequest) Size() (n int) {
+	var l int
+	_ = l
+	l = len(m.ID)
+	if l > 0 {
+		n += 1 + l + sovExecution(uint64(l))
+	}
+	return n
+}
+
 func sovExecution(x uint64) (n int) {
 	for {
 		n++
@@ -1489,6 +1643,26 @@ func (this *CloseStdinRequest) String() string {
 	}, "")
 	return s
 }
+func (this *PauseRequest) String() string {
+	if this == nil {
+		return "nil"
+	}
+	s := strings.Join([]string{`&PauseRequest{`,
+		`ID:` + fmt.Sprintf("%v", this.ID) + `,`,
+		`}`,
+	}, "")
+	return s
+}
+func (this *ResumeRequest) String() string {
+	if this == nil {
+		return "nil"
+	}
+	s := strings.Join([]string{`&ResumeRequest{`,
+		`ID:` + fmt.Sprintf("%v", this.ID) + `,`,
+		`}`,
+	}, "")
+	return s
+}
 func valueToStringExecution(v interface{}) string {
 	rv := reflect.ValueOf(v)
 	if rv.IsNil() {
@@ -3060,6 +3234,164 @@ func (m *CloseStdinRequest) Unmarshal(dAtA []byte) error {
 	}
 	return nil
 }
+func (m *PauseRequest) Unmarshal(dAtA []byte) error {
+	l := len(dAtA)
+	iNdEx := 0
+	for iNdEx < l {
+		preIndex := iNdEx
+		var wire uint64
+		for shift := uint(0); ; shift += 7 {
+			if shift >= 64 {
+				return ErrIntOverflowExecution
+			}
+			if iNdEx >= l {
+				return io.ErrUnexpectedEOF
+			}
+			b := dAtA[iNdEx]
+			iNdEx++
+			wire |= (uint64(b) & 0x7F) << shift
+			if b < 0x80 {
+				break
+			}
+		}
+		fieldNum := int32(wire >> 3)
+		wireType := int(wire & 0x7)
+		if wireType == 4 {
+			return fmt.Errorf("proto: PauseRequest: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: PauseRequest: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		case 1:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field ID", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowExecution
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= (uint64(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthExecution
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.ID = string(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
+		default:
+			iNdEx = preIndex
+			skippy, err := skipExecution(dAtA[iNdEx:])
+			if err != nil {
+				return err
+			}
+			if skippy < 0 {
+				return ErrInvalidLengthExecution
+			}
+			if (iNdEx + skippy) > l {
+				return io.ErrUnexpectedEOF
+			}
+			iNdEx += skippy
+		}
+	}
+
+	if iNdEx > l {
+		return io.ErrUnexpectedEOF
+	}
+	return nil
+}
+func (m *ResumeRequest) Unmarshal(dAtA []byte) error {
+	l := len(dAtA)
+	iNdEx := 0
+	for iNdEx < l {
+		preIndex := iNdEx
+		var wire uint64
+		for shift := uint(0); ; shift += 7 {
+			if shift >= 64 {
+				return ErrIntOverflowExecution
+			}
+			if iNdEx >= l {
+				return io.ErrUnexpectedEOF
+			}
+			b := dAtA[iNdEx]
+			iNdEx++
+			wire |= (uint64(b) & 0x7F) << shift
+			if b < 0x80 {
+				break
+			}
+		}
+		fieldNum := int32(wire >> 3)
+		wireType := int(wire & 0x7)
+		if wireType == 4 {
+			return fmt.Errorf("proto: ResumeRequest: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: ResumeRequest: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		case 1:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field ID", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowExecution
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= (uint64(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthExecution
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.ID = string(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
+		default:
+			iNdEx = preIndex
+			skippy, err := skipExecution(dAtA[iNdEx:])
+			if err != nil {
+				return err
+			}
+			if skippy < 0 {
+				return ErrInvalidLengthExecution
+			}
+			if (iNdEx + skippy) > l {
+				return io.ErrUnexpectedEOF
+			}
+			iNdEx += skippy
+		}
+	}
+
+	if iNdEx > l {
+		return io.ErrUnexpectedEOF
+	}
+	return nil
+}
 func skipExecution(dAtA []byte) (n int, err error) {
 	l := len(dAtA)
 	iNdEx := 0
@@ -3170,56 +3502,59 @@ func init() {
 }
 
 var fileDescriptorExecution = []byte{
-	// 814 bytes of a gzipped FileDescriptorProto
+	// 854 bytes of a gzipped FileDescriptorProto
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-	0x3f, 0x04, 0x00, 0x00, 0xff, 0xff, 0x74, 0xa6, 0x26, 0x26, 0x22, 0x09, 0x00, 0x00,
+	0x06, 0xa6, 0x12, 0xa6, 0x7e, 0xf8, 0x25, 0xe1, 0xea, 0x0a, 0x9d, 0x59, 0xb7, 0x6f, 0xbb, 0x07,
+	0xff, 0xbc, 0xed, 0x1e, 0xfc, 0xba, 0xee, 0x1a, 0xb7, 0xeb, 0xae, 0xf1, 0xf7, 0xba, 0x6b, 0xfc,
+	0xb7, 0xee, 0x1a, 0x97, 0xa6, 0x8c, 0xfc, 0xf2, 0xff, 0x00, 0x00, 0x00, 0xff, 0xff, 0x67, 0xba,
+	0xdb, 0xdc, 0x03, 0x0a, 0x00, 0x00,
 }

api/services/execution/execution.proto

@@ -20,6 +20,8 @@ service ContainerService {
 	rpc Exec(ExecRequest) returns (ExecResponse);
 	rpc Pty(PtyRequest) returns (google.protobuf.Empty);
 	rpc CloseStdin(CloseStdinRequest) returns (google.protobuf.Empty);
+	rpc Pause(PauseRequest) returns (google.protobuf.Empty);
+	rpc Resume(ResumeRequest) returns (google.protobuf.Empty);
 }
 
 message CreateRequest {
@@ -96,3 +98,11 @@ message CloseStdinRequest {
 	string id = 1 [(gogoproto.customname) = "ID"];
 	uint32 pid = 2;
 }
+
+message PauseRequest {
+	string id = 1 [(gogoproto.customname) = "ID"];
+}
+
+message ResumeRequest {
+	string id = 1 [(gogoproto.customname) = "ID"];
+}

api/services/images/images.pb.go

@@ -1335,7 +1335,7 @@ func init() {
 
 var fileDescriptorImages = []byte{
 	// 419 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x94, 0x52, 0x4d, 0x6f, 0xd3, 0x40,
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0x94, 0x52, 0x4d, 0x6f, 0xd3, 0x40,
 	0x10, 0xcd, 0x36, 0xa9, 0x25, 0xc6, 0xe4, 0xb2, 0xaa, 0x90, 0x71, 0x91, 0x6b, 0x99, 0x4b, 0xc5,
 	0x61, 0x0d, 0xe6, 0x02, 0x52, 0x29, 0x22, 0x2a, 0x54, 0x48, 0x1c, 0x2a, 0x1f, 0xb9, 0x39, 0xee,
 	0x60, 0x2c, 0xd5, 0x5e, 0xe3, 0x5d, 0x57, 0xca, 0x0d, 0xfe, 0x5d, 0x8e, 0x1c, 0x39, 0x21, 0xe2,

api/services/rootfs/rootfs.pb.go

@@ -1103,7 +1103,7 @@ func init() {
 
 var fileDescriptorRootfs = []byte{
 	// 428 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xac, 0x52, 0x4d, 0xab, 0xd3, 0x40,
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0xac, 0x52, 0x4d, 0xab, 0xd3, 0x40,
 	0x14, 0xed, 0xf8, 0x24, 0xad, 0x23, 0x7d, 0x8b, 0xc1, 0x45, 0x08, 0x9a, 0x94, 0xb8, 0x29, 0x82,
 	0x09, 0xd6, 0x85, 0x1b, 0x5d, 0xf8, 0x5e, 0x2c, 0xbe, 0x85, 0x20, 0x11, 0xd1, 0x9d, 0x4c, 0x93,
 	0x31, 0x1d, 0x6c, 0xe7, 0x8e, 0x33, 0xd3, 0x42, 0x77, 0xfe, 0x0e, 0x7f, 0x51, 0x97, 0x2e, 0x45,

api/services/shim/shim.pb.go

@@ -3468,7 +3468,7 @@ func init() {
 
 var fileDescriptorShim = []byte{
 	// 913 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x94, 0x55, 0x4f, 0x6f, 0xe3, 0x44,
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0x94, 0x55, 0x4f, 0x6f, 0xe3, 0x44,
 	0x14, 0xaf, 0x93, 0xd4, 0x4d, 0x5f, 0xd6, 0x5d, 0x18, 0x55, 0x95, 0x37, 0x45, 0x49, 0xb1, 0x84,
 	0xc8, 0x2e, 0x92, 0x03, 0xd9, 0x1b, 0x82, 0x43, 0xbb, 0x2d, 0x62, 0x61, 0x91, 0xa2, 0xe9, 0xde,
 	0x90, 0xa8, 0xdc, 0x78, 0x9a, 0x8c, 0x64, 0x7b, 0x8c, 0x67, 0x5c, 0x36, 0x37, 0xce, 0x9c, 0xb8,

api/types/container/container.pb.go

@@ -1364,7 +1364,7 @@ func init() {
 
 var fileDescriptorContainer = []byte{
 	// 576 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x8c, 0x52, 0xcf, 0x6e, 0xd3, 0x4e,
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0x8c, 0x52, 0xcf, 0x6e, 0xd3, 0x4e,
 	0x18, 0xcc, 0xda, 0xce, 0xbf, 0x2f, 0x6a, 0x7e, 0xd6, 0xfe, 0x10, 0x32, 0x41, 0x4a, 0xa2, 0x08,
 	0x09, 0x0b, 0x09, 0x47, 0xa4, 0x17, 0xae, 0x6e, 0x6d, 0x95, 0x0a, 0xe1, 0x84, 0x8d, 0x23, 0x7a,
 	0x8b, 0xdc, 0x78, 0x31, 0x8b, 0x1a, 0xdb, 0xb2, 0xd7, 0x85, 0xde, 0x78, 0x04, 0x9e, 0x81, 0xa7,

api/types/descriptor/descriptor.pb.go

@@ -404,7 +404,7 @@ func init() {
 
 var fileDescriptorDescriptor = []byte{
 	// 229 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xe2, 0x72, 0x4b, 0xcf, 0x2c, 0xc9,
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0xe2, 0x72, 0x4b, 0xcf, 0x2c, 0xc9,
 	0x28, 0x4d, 0xd2, 0x4b, 0xce, 0xcf, 0xd5, 0x4f, 0xce, 0xcf, 0x2b, 0x49, 0xcc, 0xcc, 0x4b, 0x2d,
 	0x4a, 0x41, 0x66, 0x26, 0x16, 0x64, 0xea, 0x97, 0x54, 0x16, 0xa4, 0x16, 0xeb, 0xa7, 0xa4, 0x16,
 	0x27, 0x17, 0x65, 0x16, 0x94, 0xe4, 0x17, 0x21, 0x31, 0xf5, 0x0a, 0x8a, 0xf2, 0x4b, 0xf2, 0x85,

api/types/mount/mount.pb.go

@@ -473,7 +473,7 @@ func init() {
 
 var fileDescriptorMount = []byte{
 	// 197 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xe2, 0xb2, 0x49, 0xcf, 0x2c, 0xc9,
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0xe2, 0xb2, 0x49, 0xcf, 0x2c, 0xc9,
 	0x28, 0x4d, 0xd2, 0x4b, 0xce, 0xcf, 0xd5, 0x4f, 0xce, 0xcf, 0x2b, 0x49, 0xcc, 0xcc, 0x4b, 0x2d,
 	0x4a, 0x41, 0x66, 0x26, 0x16, 0x64, 0xea, 0x97, 0x54, 0x16, 0xa4, 0x16, 0xeb, 0xe7, 0xe6, 0x97,
 	0xe6, 0x95, 0x40, 0x48, 0xbd, 0x82, 0xa2, 0xfc, 0x92, 0x7c, 0x21, 0x61, 0x84, 0x3a, 0xbd, 0x32,

cmd/ctr/main.go

@@ -59,6 +59,8 @@ containerd client
 		killCommand,
 		pprofCommand,
 		execCommand,
+		pauseCommand,
+		resumeCommand,
 	}
 	app.Commands = append(app.Commands, extraCmds...)
 	app.Before = func(context *cli.Context) error {

cmd/ctr/pause.go

@@ -0,0 +1,29 @@
+package main
+
+import (
+	gocontext "context"
+	"errors"
+
+	"github.com/containerd/containerd/api/services/execution"
+	"github.com/urfave/cli"
+)
+
+var pauseCommand = cli.Command{
+	Name:      "pause",
+	Usage:     "pause an existing container",
+	ArgsUsage: "CONTAINER",
+	Action: func(context *cli.Context) error {
+		containers, err := getExecutionService(context)
+		if err != nil {
+			return err
+		}
+		id := context.Args().First()
+		if id == "" {
+			return errors.New("container id must be provided")
+		}
+		_, err = containers.Pause(gocontext.Background(), &execution.PauseRequest{
+			ID: id,
+		})
+		return err
+	},
+}

cmd/ctr/resume.go

@@ -0,0 +1,29 @@
+package main
+
+import (
+	gocontext "context"
+	"errors"
+
+	"github.com/containerd/containerd/api/services/execution"
+	"github.com/urfave/cli"
+)
+
+var resumeCommand = cli.Command{
+	Name:      "resume",
+	Usage:     "resume a paused container",
+	ArgsUsage: "CONTAINER",
+	Action: func(context *cli.Context) error {
+		containers, err := getExecutionService(context)
+		if err != nil {
+			return err
+		}
+		id := context.Args().First()
+		if id == "" {
+			return errors.New("container id must be provided")
+		}
+		_, err = containers.Resume(gocontext.Background(), &execution.ResumeRequest{
+			ID: id,
+		})
+		return err
+	},
+}

container.go

@@ -14,6 +14,10 @@ type Container interface {
 	Start(context.Context) error
 	// State returns the container's state
 	State(context.Context) (State, error)
+	// Pause pauses the container process
+	Pause(context.Context) error
+	// Resume unpauses the container process
+	Resume(context.Context) error
 	// Kill signals a container
 	Kill(context.Context, uint32, bool) error
 	// Exec adds a process into the container
@@ -26,9 +30,6 @@ type Container interface {
 
 type LinuxContainer interface {
 	Container
-
-	Pause(context.Context) error
-	Resume(context.Context) error
 }
 
 type ExecOpts struct {

services/execution/service.go

@@ -188,6 +188,30 @@ func (s *Service) List(ctx context.Context, r *api.ListRequest) (*api.ListRespon
 	return resp, nil
 }
 
+func (s *Service) Pause(ctx context.Context, r *api.PauseRequest) (*google_protobuf.Empty, error) {
+	c, err := s.getContainer(r.ID)
+	if err != nil {
+		return nil, err
+	}
+	err = c.Pause(ctx)
+	if err != nil {
+		return nil, err
+	}
+	return empty, nil
+}
+
+func (s *Service) Resume(ctx context.Context, r *api.ResumeRequest) (*google_protobuf.Empty, error) {
+	c, err := s.getContainer(r.ID)
+	if err != nil {
+		return nil, err
+	}
+	err = c.Resume(ctx)
+	if err != nil {
+		return nil, err
+	}
+	return empty, nil
+}
+
 func (s *Service) Kill(ctx context.Context, r *api.KillRequest) (*google_protobuf.Empty, error) {
 	c, err := s.getContainer(r.ID)
 	if err != nil {

snapshot/storage/proto/record.pb.go

@@ -512,7 +512,7 @@ func init() {
 
 var fileDescriptorRecord = []byte{
 	// 330 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x54, 0x90, 0xbd, 0x4e, 0xf3, 0x30,
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0x54, 0x90, 0xbd, 0x4e, 0xf3, 0x30,
 	0x18, 0x85, 0xe3, 0x7c, 0xf9, 0x42, 0x6b, 0xd1, 0xaa, 0x18, 0x54, 0x59, 0x19, 0x8c, 0xc5, 0x42,
 	0xc4, 0x90, 0x08, 0xb8, 0x82, 0xfe, 0x0d, 0x55, 0x55, 0x21, 0x85, 0x8a, 0x3d, 0x8d, 0xad, 0xd4,
 	0x82, 0xda, 0x95, 0x63, 0x2a, 0xc1, 0xc4, 0x88, 0x7a, 0x0f, 0x9d, 0x60, 0xe3, 0x0e, 0xb8, 0x82,

windows/container.go

@@ -4,6 +4,7 @@ package windows
 
 import (
 	"encoding/json"
+	"fmt"
 	"sync"
 	"time"
 
@@ -101,6 +102,20 @@ func (c *container) Start(ctx context.Context) error {
 	return nil
 }
 
+func (c *container) Pause(ctx context.Context) error {
+	if c.ctr.GetConfiguration().UseHyperV == false {
+		return fmt.Errorf("Windows non-HyperV containers do not support pause")
+	}
+	return c.ctr.Pause()
+}
+
+func (c *container) Resume(ctx context.Context) error {
+	if c.ctr.GetConfiguration().UseHyperV == false {
+		return fmt.Errorf("Windows non-HyperV containers do not support resume")
+	}
+	return c.ctr.Resume()
+}
+
 func (c *container) State(ctx context.Context) (containerd.State, error) {
 	return c, nil
 }

windows/hcs/hcs.go

@@ -299,6 +299,10 @@ func (c *Container) ExitCode() (uint32, error) {
 	return c.processes[0].ExitCode()
 }
 
+func (c *Container) GetConfiguration() Configuration {
+	return c.conf
+}
+
 func (c *Container) AddProcess(ctx context.Context, spec specs.Process, io *IO) (*Process, error) {
 	if len(c.processes) == 0 {
 		return nil, errors.New("container not started")