Add Kill API for shim service

Signed-off-by: Qiang Huang <h.huangqiang@huawei.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,
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api/services/execution/execution.pb.go

@@ -1951,7 +1951,7 @@ func init() {
 
 var fileDescriptorExecution = []byte{
 	// 586 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x94, 0x53, 0x4d, 0x6f, 0xd3, 0x40,
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0x94, 0x53, 0x4d, 0x6f, 0xd3, 0x40,
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api/services/images/images.pb.go

@@ -125,9 +125,14 @@ const _ = grpc.SupportPackageIsVersion4
 // Client API for Images service
 
 type ImagesClient interface {
+	// Get returns an image by name.
 	Get(ctx context.Context, in *GetRequest, opts ...grpc.CallOption) (*GetResponse, error)
+	// Put assigns the name to a given target image based on the provided
+	// image.
 	Put(ctx context.Context, in *PutRequest, opts ...grpc.CallOption) (*google_protobuf1.Empty, error)
+	// List returns a list of all images known to containerd.
 	List(ctx context.Context, in *ListRequest, opts ...grpc.CallOption) (*ListResponse, error)
+	// Delete deletes the image by name.
 	Delete(ctx context.Context, in *DeleteRequest, opts ...grpc.CallOption) (*google_protobuf1.Empty, error)
 }
 
@@ -178,9 +183,14 @@ func (c *imagesClient) Delete(ctx context.Context, in *DeleteRequest, opts ...gr
 // Server API for Images service
 
 type ImagesServer interface {
+	// Get returns an image by name.
 	Get(context.Context, *GetRequest) (*GetResponse, error)
+	// Put assigns the name to a given target image based on the provided
+	// image.
 	Put(context.Context, *PutRequest) (*google_protobuf1.Empty, error)
+	// List returns a list of all images known to containerd.
 	List(context.Context, *ListRequest) (*ListResponse, error)
+	// Delete deletes the image by name.
 	Delete(context.Context, *DeleteRequest) (*google_protobuf1.Empty, error)
 }
 
@@ -1325,7 +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,
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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,
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api/services/shim/shim.pb.go

@@ -24,6 +24,7 @@
 		PauseRequest
 		ResumeRequest
 		ExitRequest
+		KillRequest
 */
 package shim
 
@@ -191,6 +192,15 @@ func (m *ExitRequest) Reset()                    { *m = ExitRequest{} }
 func (*ExitRequest) ProtoMessage()               {}
 func (*ExitRequest) Descriptor() ([]byte, []int) { return fileDescriptorShim, []int{14} }
 
+type KillRequest struct {
+	Signal uint32 `protobuf:"varint,1,opt,name=signal,proto3" json:"signal,omitempty"`
+	All    bool   `protobuf:"varint,2,opt,name=all,proto3" json:"all,omitempty"`
+}
+
+func (m *KillRequest) Reset()                    { *m = KillRequest{} }
+func (*KillRequest) ProtoMessage()               {}
+func (*KillRequest) Descriptor() ([]byte, []int) { return fileDescriptorShim, []int{15} }
+
 func init() {
 	proto.RegisterType((*CreateRequest)(nil), "containerd.v1.services.shim.CreateRequest")
 	proto.RegisterType((*CreateResponse)(nil), "containerd.v1.services.shim.CreateResponse")
@@ -207,6 +217,7 @@ func init() {
 	proto.RegisterType((*PauseRequest)(nil), "containerd.v1.services.shim.PauseRequest")
 	proto.RegisterType((*ResumeRequest)(nil), "containerd.v1.services.shim.ResumeRequest")
 	proto.RegisterType((*ExitRequest)(nil), "containerd.v1.services.shim.ExitRequest")
+	proto.RegisterType((*KillRequest)(nil), "containerd.v1.services.shim.KillRequest")
 }
 
 // Reference imports to suppress errors if they are not otherwise used.
@@ -230,6 +241,7 @@ type ShimClient interface {
 	Pause(ctx context.Context, in *PauseRequest, opts ...grpc.CallOption) (*google_protobuf1.Empty, error)
 	Resume(ctx context.Context, in *ResumeRequest, opts ...grpc.CallOption) (*google_protobuf1.Empty, error)
 	Exit(ctx context.Context, in *ExitRequest, opts ...grpc.CallOption) (*google_protobuf1.Empty, error)
+	Kill(ctx context.Context, in *KillRequest, opts ...grpc.CallOption) (*google_protobuf1.Empty, error)
 }
 
 type shimClient struct {
@@ -353,6 +365,15 @@ func (c *shimClient) Exit(ctx context.Context, in *ExitRequest, opts ...grpc.Cal
 	return out, nil
 }
 
+func (c *shimClient) Kill(ctx context.Context, in *KillRequest, opts ...grpc.CallOption) (*google_protobuf1.Empty, error) {
+	out := new(google_protobuf1.Empty)
+	err := grpc.Invoke(ctx, "/containerd.v1.services.shim.Shim/Kill", in, out, c.cc, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 // Server API for Shim service
 
 type ShimServer interface {
@@ -366,6 +387,7 @@ type ShimServer interface {
 	Pause(context.Context, *PauseRequest) (*google_protobuf1.Empty, error)
 	Resume(context.Context, *ResumeRequest) (*google_protobuf1.Empty, error)
 	Exit(context.Context, *ExitRequest) (*google_protobuf1.Empty, error)
+	Kill(context.Context, *KillRequest) (*google_protobuf1.Empty, error)
 }
 
 func RegisterShimServer(s *grpc.Server, srv ShimServer) {
@@ -555,6 +577,24 @@ func _Shim_Exit_Handler(srv interface{}, ctx context.Context, dec func(interface
 	return interceptor(ctx, in, info, handler)
 }
 
+func _Shim_Kill_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(KillRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(ShimServer).Kill(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/containerd.v1.services.shim.Shim/Kill",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(ShimServer).Kill(ctx, req.(*KillRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 var _Shim_serviceDesc = grpc.ServiceDesc{
 	ServiceName: "containerd.v1.services.shim.Shim",
 	HandlerType: (*ShimServer)(nil),
@@ -595,6 +635,10 @@ var _Shim_serviceDesc = grpc.ServiceDesc{
 			MethodName: "Exit",
 			Handler:    _Shim_Exit_Handler,
 		},
+		{
+			MethodName: "Kill",
+			Handler:    _Shim_Kill_Handler,
+		},
 	},
 	Streams: []grpc.StreamDesc{
 		{
@@ -1067,6 +1111,39 @@ func (m *ExitRequest) MarshalTo(dAtA []byte) (int, error) {
 	return i, nil
 }
 
+func (m *KillRequest) 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 *KillRequest) MarshalTo(dAtA []byte) (int, error) {
+	var i int
+	_ = i
+	var l int
+	_ = l
+	if m.Signal != 0 {
+		dAtA[i] = 0x8
+		i++
+		i = encodeVarintShim(dAtA, i, uint64(m.Signal))
+	}
+	if m.All {
+		dAtA[i] = 0x10
+		i++
+		if m.All {
+			dAtA[i] = 1
+		} else {
+			dAtA[i] = 0
+		}
+		i++
+	}
+	return i, nil
+}
+
 func encodeFixed64Shim(dAtA []byte, offset int, v uint64) int {
 	dAtA[offset] = uint8(v)
 	dAtA[offset+1] = uint8(v >> 8)
@@ -1290,6 +1367,18 @@ func (m *ExitRequest) Size() (n int) {
 	return n
 }
 
+func (m *KillRequest) Size() (n int) {
+	var l int
+	_ = l
+	if m.Signal != 0 {
+		n += 1 + sovShim(uint64(m.Signal))
+	}
+	if m.All {
+		n += 2
+	}
+	return n
+}
+
 func sovShim(x uint64) (n int) {
 	for {
 		n++
@@ -1467,6 +1556,17 @@ func (this *ExitRequest) String() string {
 	}, "")
 	return s
 }
+func (this *KillRequest) String() string {
+	if this == nil {
+		return "nil"
+	}
+	s := strings.Join([]string{`&KillRequest{`,
+		`Signal:` + fmt.Sprintf("%v", this.Signal) + `,`,
+		`All:` + fmt.Sprintf("%v", this.All) + `,`,
+		`}`,
+	}, "")
+	return s
+}
 func valueToStringShim(v interface{}) string {
 	rv := reflect.ValueOf(v)
 	if rv.IsNil() {
@@ -2937,6 +3037,95 @@ func (m *ExitRequest) Unmarshal(dAtA []byte) error {
 	}
 	return nil
 }
+func (m *KillRequest) 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 ErrIntOverflowShim
+			}
+			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: KillRequest: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: KillRequest: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		case 1:
+			if wireType != 0 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Signal", wireType)
+			}
+			m.Signal = 0
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowShim
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				m.Signal |= (uint32(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+		case 2:
+			if wireType != 0 {
+				return fmt.Errorf("proto: wrong wireType = %d for field All", wireType)
+			}
+			var v int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowShim
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				v |= (int(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			m.All = bool(v != 0)
+		default:
+			iNdEx = preIndex
+			skippy, err := skipShim(dAtA[iNdEx:])
+			if err != nil {
+				return err
+			}
+			if skippy < 0 {
+				return ErrInvalidLengthShim
+			}
+			if (iNdEx + skippy) > l {
+				return io.ErrUnexpectedEOF
+			}
+			iNdEx += skippy
+		}
+	}
+
+	if iNdEx > l {
+		return io.ErrUnexpectedEOF
+	}
+	return nil
+}
 func skipShim(dAtA []byte) (n int, err error) {
 	l := len(dAtA)
 	iNdEx := 0
@@ -3047,55 +3236,58 @@ func init() {
 }
 
 var fileDescriptorShim = []byte{
-	// 800 bytes of a gzipped FileDescriptorProto
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+	0xe9, 0x9f, 0xbf, 0xb3, 0xc0, 0xd7, 0xf2, 0x3d, 0x96, 0xe5, 0x6a, 0x2d, 0xb6, 0x94, 0xbb, 0xa5,
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+	0xed, 0x3f, 0x3e, 0x00, 0x69, 0x92, 0x7f, 0x03, 0xdd, 0x89, 0x58, 0xa2, 0x8f, 0xf7, 0xde, 0xa8,
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+	0x65, 0xd3, 0xc8, 0x03, 0x06, 0x47, 0xcb, 0xa1, 0x85, 0x87, 0x2d, 0xcd, 0xf8, 0xbb, 0x1f, 0x51,
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+	0xeb, 0x3d, 0x50, 0xcb, 0xdd, 0x92, 0x7f, 0x53, 0x00, 0x8d, 0xfd, 0xbf, 0x00, 0x47, 0x0b, 0xa3,
-	0x75, 0xd7, 0x7a, 0xbb, 0xee, 0x5a, 0x7f, 0xad, 0xbb, 0xd6, 0x7f, 0xeb, 0xae, 0x35, 0x71, 0x14,
+	0xa5, 0xff, 0x2d, 0xf5, 0x34, 0x66, 0xfb, 0x56, 0x8e, 0x9c, 0x8a, 0xd6, 0x91, 0x53, 0x71, 0x40,
-	0xf2, 0xc5, 0xff, 0x01, 0x00, 0x00, 0xff, 0xff, 0x0a, 0x76, 0x56, 0x67, 0xa7, 0x08, 0x00, 0x00,
+	0x26, 0x29, 0xc8, 0x96, 0x4c, 0x1b, 0x9a, 0x6d, 0xca, 0xf4, 0xdc, 0x7b, 0xfd, 0x66, 0x70, 0xef,
+	0x9f, 0x37, 0x83, 0x7b, 0xbf, 0xad, 0x06, 0xd6, 0xeb, 0xd5, 0xc0, 0xfa, 0x7b, 0x35, 0xb0, 0xfe,
+	0x5b, 0x0d, 0xac, 0x5b, 0x47, 0x21, 0x9f, 0xfd, 0x1f, 0x00, 0x00, 0xff, 0xff, 0xe1, 0x25, 0x57,
+	0xa4, 0x2a, 0x09, 0x00, 0x00,
 }

api/services/shim/shim.proto

@@ -19,6 +19,7 @@ service Shim {
 	rpc Pause(PauseRequest) returns (google.protobuf.Empty);
 	rpc Resume(ResumeRequest) returns (google.protobuf.Empty);
 	rpc Exit(ExitRequest) returns (google.protobuf.Empty);
+	rpc Kill(KillRequest) returns (google.protobuf.Empty);
 }
 
 message CreateRequest {
@@ -95,3 +96,8 @@ message ResumeRequest {
 
 message ExitRequest {
 }
+
+message KillRequest {
+	uint32 signal = 1;
+	bool all = 2;
+}

api/types/container/container.pb.go

@@ -1316,7 +1316,7 @@ func init() {
 
 var fileDescriptorContainer = []byte{
 	// 516 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x8c, 0x53, 0x41, 0x8b, 0xd3, 0x5c,
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0x8c, 0x53, 0x41, 0x8b, 0xd3, 0x5c,
 	0x14, 0xed, 0x4b, 0xd2, 0xb4, 0xbd, 0x65, 0xfa, 0x3d, 0xde, 0x27, 0x12, 0x47, 0xc8, 0x84, 0x22,
 	0x18, 0x04, 0x53, 0xec, 0x6c, 0xdc, 0x76, 0x9a, 0x30, 0x16, 0x31, 0xad, 0xaf, 0x29, 0xce, 0xae,
 	0x64, 0x9a, 0x10, 0x9f, 0xcc, 0x24, 0x25, 0x79, 0xad, 0xce, 0xce, 0x9f, 0x37, 0x4b, 0x97, 0xae,

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,

linux/shim/client.go

@@ -61,6 +61,10 @@ func (c *client) Resume(ctx context.Context, in *shimapi.ResumeRequest, opts ...
 	return c.s.Resume(ctx, in)
 }
 
+func (c *client) Kill(ctx context.Context, in *shimapi.KillRequest, opts ...grpc.CallOption) (*google_protobuf.Empty, error) {
+	return c.s.Kill(ctx, in)
+}
+
 func (c *client) Exit(ctx context.Context, in *shimapi.ExitRequest, opts ...grpc.CallOption) (*google_protobuf.Empty, error) {
 	// don't exit the calling process for the client
 	// but make sure we unmount the containers rootfs for this client

linux/shim/init.go

@@ -158,6 +158,12 @@ func (p *initProcess) Resume(context context.Context) error {
 	return p.runc.Resume(context, p.id)
 }
 
+func (p *initProcess) Kill(context context.Context, signal uint32, all bool) error {
+	return p.runc.Kill(context, p.id, int(signal), &runc.KillOpts{
+		All: all,
+	})
+}
+
 func (p *initProcess) killAll(context context.Context) error {
 	return p.runc.Kill(context, p.id, int(syscall.SIGKILL), &runc.KillOpts{
 		All: true,

linux/shim/service.go

@@ -217,3 +217,10 @@ func (s *Service) Exit(ctx context.Context, r *shimapi.ExitRequest) (*google_pro
 	}
 	return empty, nil
 }
+
+func (s *Service) Kill(ctx context.Context, r *shimapi.KillRequest) (*google_protobuf.Empty, error) {
+	if err := s.initProcess.Kill(ctx, r.Signal, r.All); err != nil {
+		return nil, err
+	}
+	return empty, nil
+}

snapshot/storage/proto/record.pb.go

@@ -447,7 +447,7 @@ func init() {
 
 var fileDescriptorRecord = []byte{
 	// 304 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xe2, 0x72, 0x49, 0xcf, 0x2c, 0xc9,
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0xe2, 0x72, 0x49, 0xcf, 0x2c, 0xc9,
 	0x28, 0x4d, 0xd2, 0x4b, 0xce, 0xcf, 0xd5, 0x4f, 0xce, 0xcf, 0x2b, 0x49, 0xcc, 0xcc, 0x4b, 0x2d,
 	0x4a, 0x41, 0x66, 0x16, 0xe7, 0x25, 0x16, 0x14, 0x67, 0xe4, 0x97, 0xe8, 0x17, 0x97, 0xe4, 0x17,
 	0x25, 0xa6, 0xa7, 0xea, 0x17, 0x14, 0xe5, 0x97, 0xe4, 0xeb, 0x17, 0xa5, 0x26, 0xe7, 0x17, 0xa5,