Merge pull request #3530 from jterry75/revenor_hcsshim

Revendor github.com/Microsoft/hcsshim

vendor.conf

@@ -34,7 +34,7 @@ golang.org/x/sync 42b317875d0fa942474b76e1b46a6060d720ae6e
 github.com/BurntSushi/toml v0.3.1
 github.com/grpc-ecosystem/go-grpc-prometheus 6b7015e65d366bf3f19b2b2a000a831940f0f7e0
 github.com/Microsoft/go-winio v0.4.14
-github.com/Microsoft/hcsshim 8abdbb8205e4192c68b5f84c31197156f31be517
+github.com/Microsoft/hcsshim 9e921883ac929bbe515b39793ece99ce3a9d7706
 google.golang.org/genproto d80a6e20e776b0b17a324d0ba1ab50a39c8e8944
 golang.org/x/text 19e51611da83d6be54ddafce4a4af510cb3e9ea4
 github.com/containerd/ttrpc 1fb3814edf44a76e0ccf503decf726d994919a9a
@@ -44,6 +44,8 @@ github.com/google/go-cmp v0.2.0
 go.etcd.io/bbolt v1.3.3
 github.com/hashicorp/errwrap 7554cd9344cec97297fa6649b055a8c98c2a1e55
 github.com/hashicorp/go-multierror ed905158d87462226a13fe39ddf685ea65f1c11f
+github.com/hashicorp/golang-lru v0.5.1
+go.opencensus.io v0.22.0
 
 # cri dependencies
 github.com/containerd/cri f1d492b0cdd14e76476ee4dd024696ce3634e501 # master

vendor/github.com/Microsoft/hcsshim/cmd/containerd-shim-runhcs-v1/options/runhcs.pb.go

@@ -1,33 +1,19 @@
 // Code generated by protoc-gen-gogo. DO NOT EDIT.
 // source: github.com/Microsoft/hcsshim/cmd/containerd-shim-runhcs-v1/options/runhcs.proto
 
-/*
-	Package options is a generated protocol buffer package.
-
-	It is generated from these files:
-		github.com/Microsoft/hcsshim/cmd/containerd-shim-runhcs-v1/options/runhcs.proto
-
-	It has these top-level messages:
-		Options
-		ProcessDetails
-*/
 package options
 
-import proto "github.com/gogo/protobuf/proto"
+import (
-import fmt "fmt"
+	fmt "fmt"
-import math "math"
+	proto "github.com/gogo/protobuf/proto"
-
+	_ "github.com/gogo/protobuf/types"
-// skipping weak import gogoproto "github.com/gogo/protobuf/gogoproto"
+	github_com_gogo_protobuf_types "github.com/gogo/protobuf/types"
-import _ "github.com/gogo/protobuf/types"
+	io "io"
-
+	math "math"
-import time "time"
+	reflect "reflect"
-
+	strings "strings"
-import types "github.com/gogo/protobuf/types"
+	time "time"
-
+)
-import strings "strings"
-import reflect "reflect"
-
-import io "io"
 
 // Reference imports to suppress errors if they are not otherwise used.
 var _ = proto.Marshal
@@ -54,6 +40,7 @@ var Options_DebugType_name = map[int32]string{
 	1: "FILE",
 	2: "ETW",
 }
+
 var Options_DebugType_value = map[string]int32{
 	"NPIPE": 0,
 	"FILE":  1,
@@ -63,7 +50,10 @@ var Options_DebugType_value = map[string]int32{
 func (x Options_DebugType) String() string {
 	return proto.EnumName(Options_DebugType_name, int32(x))
 }
-func (Options_DebugType) EnumDescriptor() ([]byte, []int) { return fileDescriptorRunhcs, []int{0, 0} }
+
+func (Options_DebugType) EnumDescriptor() ([]byte, []int) {
+	return fileDescriptor_b643df6839c75082, []int{0, 0}
+}
 
 type Options_SandboxIsolation int32
 
@@ -76,6 +66,7 @@ var Options_SandboxIsolation_name = map[int32]string{
 	0: "PROCESS",
 	1: "HYPERVISOR",
 }
+
 var Options_SandboxIsolation_value = map[string]int32{
 	"PROCESS":    0,
 	"HYPERVISOR": 1,
@@ -84,8 +75,9 @@ var Options_SandboxIsolation_value = map[string]int32{
 func (x Options_SandboxIsolation) String() string {
 	return proto.EnumName(Options_SandboxIsolation_name, int32(x))
 }
+
 func (Options_SandboxIsolation) EnumDescriptor() ([]byte, []int) {
-	return fileDescriptorRunhcs, []int{0, 1}
+	return fileDescriptor_b643df6839c75082, []int{0, 1}
 }
 
 // Options are the set of customizations that can be passed at Create time.
@@ -109,18 +101,49 @@ type Options struct {
 	SandboxIsolation Options_SandboxIsolation `protobuf:"varint,6,opt,name=sandbox_isolation,json=sandboxIsolation,proto3,enum=containerd.runhcs.v1.Options_SandboxIsolation" json:"sandbox_isolation,omitempty"`
 	// boot_files_root_path is the path to the directory containing the LCOW
 	// kernel and root FS files.
-	BootFilesRootPath string `protobuf:"bytes,7,opt,name=boot_files_root_path,json=bootFilesRootPath,proto3" json:"boot_files_root_path,omitempty"`
+	BootFilesRootPath    string   `protobuf:"bytes,7,opt,name=boot_files_root_path,json=bootFilesRootPath,proto3" json:"boot_files_root_path,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
 }
 
-func (m *Options) Reset()                    { *m = Options{} }
+func (m *Options) Reset()      { *m = Options{} }
-func (*Options) ProtoMessage()               {}
+func (*Options) ProtoMessage() {}
-func (*Options) Descriptor() ([]byte, []int) { return fileDescriptorRunhcs, []int{0} }
+func (*Options) Descriptor() ([]byte, []int) {
+	return fileDescriptor_b643df6839c75082, []int{0}
+}
+func (m *Options) XXX_Unmarshal(b []byte) error {
+	return m.Unmarshal(b)
+}
+func (m *Options) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	if deterministic {
+		return xxx_messageInfo_Options.Marshal(b, m, deterministic)
+	} else {
+		b = b[:cap(b)]
+		n, err := m.MarshalTo(b)
+		if err != nil {
+			return nil, err
+		}
+		return b[:n], nil
+	}
+}
+func (m *Options) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Options.Merge(m, src)
+}
+func (m *Options) XXX_Size() int {
+	return m.Size()
+}
+func (m *Options) XXX_DiscardUnknown() {
+	xxx_messageInfo_Options.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Options proto.InternalMessageInfo
 
 // ProcessDetails contains additional information about a process. This is the additional
 // info returned in the Pids query.
 type ProcessDetails struct {
 	ImageName                    string    `protobuf:"bytes,1,opt,name=image_name,json=imageName,proto3" json:"image_name,omitempty"`
-	CreatedAt                    time.Time `protobuf:"bytes,2,opt,name=created_at,json=createdAt,stdtime" json:"created_at"`
+	CreatedAt                    time.Time `protobuf:"bytes,2,opt,name=created_at,json=createdAt,proto3,stdtime" json:"created_at"`
 	KernelTime_100Ns             uint64    `protobuf:"varint,3,opt,name=kernel_time_100_ns,json=kernelTime100Ns,proto3" json:"kernel_time_100_ns,omitempty"`
 	MemoryCommitBytes            uint64    `protobuf:"varint,4,opt,name=memory_commit_bytes,json=memoryCommitBytes,proto3" json:"memory_commit_bytes,omitempty"`
 	MemoryWorkingSetPrivateBytes uint64    `protobuf:"varint,5,opt,name=memory_working_set_private_bytes,json=memoryWorkingSetPrivateBytes,proto3" json:"memory_working_set_private_bytes,omitempty"`
@@ -128,18 +151,102 @@ type ProcessDetails struct {
 	ProcessID                    uint32    `protobuf:"varint,7,opt,name=process_id,json=processId,proto3" json:"process_id,omitempty"`
 	UserTime_100Ns               uint64    `protobuf:"varint,8,opt,name=user_time_100_ns,json=userTime100Ns,proto3" json:"user_time_100_ns,omitempty"`
 	ExecID                       string    `protobuf:"bytes,9,opt,name=exec_id,json=execId,proto3" json:"exec_id,omitempty"`
+	XXX_NoUnkeyedLiteral         struct{}  `json:"-"`
+	XXX_unrecognized             []byte    `json:"-"`
+	XXX_sizecache                int32     `json:"-"`
 }
 
-func (m *ProcessDetails) Reset()                    { *m = ProcessDetails{} }
+func (m *ProcessDetails) Reset()      { *m = ProcessDetails{} }
-func (*ProcessDetails) ProtoMessage()               {}
+func (*ProcessDetails) ProtoMessage() {}
-func (*ProcessDetails) Descriptor() ([]byte, []int) { return fileDescriptorRunhcs, []int{1} }
+func (*ProcessDetails) Descriptor() ([]byte, []int) {
+	return fileDescriptor_b643df6839c75082, []int{1}
+}
+func (m *ProcessDetails) XXX_Unmarshal(b []byte) error {
+	return m.Unmarshal(b)
+}
+func (m *ProcessDetails) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	if deterministic {
+		return xxx_messageInfo_ProcessDetails.Marshal(b, m, deterministic)
+	} else {
+		b = b[:cap(b)]
+		n, err := m.MarshalTo(b)
+		if err != nil {
+			return nil, err
+		}
+		return b[:n], nil
+	}
+}
+func (m *ProcessDetails) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_ProcessDetails.Merge(m, src)
+}
+func (m *ProcessDetails) XXX_Size() int {
+	return m.Size()
+}
+func (m *ProcessDetails) XXX_DiscardUnknown() {
+	xxx_messageInfo_ProcessDetails.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_ProcessDetails proto.InternalMessageInfo
 
 func init() {
-	proto.RegisterType((*Options)(nil), "containerd.runhcs.v1.Options")
-	proto.RegisterType((*ProcessDetails)(nil), "containerd.runhcs.v1.ProcessDetails")
 	proto.RegisterEnum("containerd.runhcs.v1.Options_DebugType", Options_DebugType_name, Options_DebugType_value)
 	proto.RegisterEnum("containerd.runhcs.v1.Options_SandboxIsolation", Options_SandboxIsolation_name, Options_SandboxIsolation_value)
+	proto.RegisterType((*Options)(nil), "containerd.runhcs.v1.Options")
+	proto.RegisterType((*ProcessDetails)(nil), "containerd.runhcs.v1.ProcessDetails")
 }
+
+func init() {
+	proto.RegisterFile("github.com/Microsoft/hcsshim/cmd/containerd-shim-runhcs-v1/options/runhcs.proto", fileDescriptor_b643df6839c75082)
+}
+
+var fileDescriptor_b643df6839c75082 = []byte{
+	// 704 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xa4, 0x54, 0x4d, 0x6f, 0xda, 0x48,
+	0x18, 0xc6, 0xe1, 0xd3, 0x6f, 0x96, 0xc4, 0x99, 0xe5, 0x80, 0xb2, 0xbb, 0x80, 0xc8, 0x21, 0x89,
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+	0x2e, 0x1d, 0x4a, 0x08, 0xaf, 0xe7, 0x5b, 0xca, 0x81, 0x6a, 0xff, 0xb1, 0x06, 0x6d, 0x42, 0xb8,
+	0x10, 0x31, 0x37, 0xf6, 0x27, 0xe4, 0xca, 0x09, 0x23, 0x37, 0xc0, 0xf5, 0x42, 0x2a, 0xca, 0x40,
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+	0x50, 0x9b, 0x10, 0xc2, 0x9d, 0x69, 0x38, 0xc7, 0x4c, 0xf6, 0xe4, 0x24, 0x2e, 0x9f, 0xd5, 0xcb,
+	0xb2, 0x96, 0x1d, 0xc1, 0x0d, 0x05, 0x25, 0x3a, 0xb3, 0x5c, 0x3e, 0x6b, 0x1f, 0x82, 0x7a, 0x37,
+	0x1a, 0xa4, 0x42, 0xf1, 0xd4, 0x32, 0xad, 0x81, 0x96, 0x43, 0x15, 0x28, 0x0c, 0xcd, 0x17, 0x03,
+	0x4d, 0x41, 0x65, 0xc8, 0x0f, 0xce, 0xce, 0xb5, 0x8d, 0xb6, 0x01, 0xda, 0xc3, 0x0a, 0xd0, 0x26,
+	0x94, 0x2d, 0x7b, 0x74, 0x32, 0x18, 0x8f, 0xb5, 0x1c, 0xda, 0x02, 0x78, 0xf6, 0xc6, 0x1a, 0xd8,
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+	0xaa, 0x44, 0x4e, 0xdd, 0x08, 0xa3, 0x13, 0x00, 0x8f, 0x62, 0x97, 0x63, 0xdf, 0x71, 0xb9, 0x5c,
+	0xec, 0xe6, 0xf1, 0xae, 0x9e, 0x1e, 0x8c, 0xbe, 0x3e, 0x18, 0xfd, 0x6c, 0x7d, 0x30, 0xbd, 0xca,
+	0xf5, 0x4d, 0x33, 0xf7, 0xf1, 0x5b, 0x53, 0xb1, 0xd5, 0x2c, 0xee, 0x29, 0x47, 0xff, 0x02, 0xba,
+	0xc0, 0x34, 0xc6, 0x73, 0x47, 0x5c, 0x96, 0xd3, 0xed, 0x74, 0x9c, 0x98, 0xc9, 0xd5, 0x16, 0xec,
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+	0xf1, 0x48, 0x14, 0x85, 0xdc, 0x99, 0x2c, 0x39, 0x66, 0x72, 0xc7, 0x05, 0x7b, 0x27, 0xa5, 0x4e,
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+	0xc6, 0x98, 0x5b, 0xa9, 0x28, 0xf5, 0xe9, 0x43, 0xf3, 0x11, 0x1f, 0x36, 0x73, 0x29, 0xf6, 0x33,
+	0x9b, 0x92, 0xb4, 0xf9, 0xeb, 0xa1, 0xcd, 0x58, 0x6a, 0x52, 0x97, 0xff, 0x00, 0x92, 0x74, 0xc0,
+	0x4e, 0xe8, 0xcb, 0x25, 0x57, 0x7b, 0xd5, 0xd5, 0x4d, 0x53, 0xcd, 0xc6, 0x6e, 0xf6, 0x6d, 0x35,
+	0x13, 0x98, 0x3e, 0xda, 0x07, 0x6d, 0xc1, 0x30, 0xfd, 0x69, 0x2c, 0x15, 0x99, 0xa4, 0x2a, 0xf0,
+	0xfb, 0xa1, 0xec, 0x41, 0x19, 0x5f, 0x61, 0x4f, 0x78, 0xaa, 0x62, 0x45, 0x3d, 0x58, 0xdd, 0x34,
+	0x4b, 0x83, 0x2b, 0xec, 0x99, 0x7d, 0xbb, 0x24, 0x28, 0xd3, 0xef, 0xf9, 0xd7, 0xb7, 0x8d, 0xdc,
+	0x97, 0xdb, 0x46, 0xee, 0xc3, 0xaa, 0xa1, 0x5c, 0xaf, 0x1a, 0xca, 0xe7, 0x55, 0x43, 0xf9, 0xbe,
+	0x6a, 0x28, 0x6f, 0x9f, 0xff, 0xfe, 0xdf, 0xcb, 0x93, 0xec, 0xf7, 0x75, 0x6e, 0x52, 0x92, 0x7b,
+	0xff, 0xff, 0x47, 0x00, 0x00, 0x00, 0xff, 0xff, 0xa3, 0x9a, 0x54, 0x17, 0xb5, 0x04, 0x00, 0x00,
+}
+
 func (m *Options) Marshal() (dAtA []byte, err error) {
 	size := m.Size()
 	dAtA = make([]byte, size)
@@ -199,6 +306,9 @@ func (m *Options) MarshalTo(dAtA []byte) (int, error) {
 		i = encodeVarintRunhcs(dAtA, i, uint64(len(m.BootFilesRootPath)))
 		i += copy(dAtA[i:], m.BootFilesRootPath)
 	}
+	if m.XXX_unrecognized != nil {
+		i += copy(dAtA[i:], m.XXX_unrecognized)
+	}
 	return i, nil
 }
 
@@ -225,8 +335,8 @@ func (m *ProcessDetails) MarshalTo(dAtA []byte) (int, error) {
 	}
 	dAtA[i] = 0x12
 	i++
-	i = encodeVarintRunhcs(dAtA, i, uint64(types.SizeOfStdTime(m.CreatedAt)))
+	i = encodeVarintRunhcs(dAtA, i, uint64(github_com_gogo_protobuf_types.SizeOfStdTime(m.CreatedAt)))
-	n1, err := types.StdTimeMarshalTo(m.CreatedAt, dAtA[i:])
+	n1, err := github_com_gogo_protobuf_types.StdTimeMarshalTo(m.CreatedAt, dAtA[i:])
 	if err != nil {
 		return 0, err
 	}
@@ -267,6 +377,9 @@ func (m *ProcessDetails) MarshalTo(dAtA []byte) (int, error) {
 		i = encodeVarintRunhcs(dAtA, i, uint64(len(m.ExecID)))
 		i += copy(dAtA[i:], m.ExecID)
 	}
+	if m.XXX_unrecognized != nil {
+		i += copy(dAtA[i:], m.XXX_unrecognized)
+	}
 	return i, nil
 }
 
@@ -280,6 +393,9 @@ func encodeVarintRunhcs(dAtA []byte, offset int, v uint64) int {
 	return offset + 1
 }
 func (m *Options) Size() (n int) {
+	if m == nil {
+		return 0
+	}
 	var l int
 	_ = l
 	if m.Debug {
@@ -307,17 +423,23 @@ func (m *Options) Size() (n int) {
 	if l > 0 {
 		n += 1 + l + sovRunhcs(uint64(l))
 	}
+	if m.XXX_unrecognized != nil {
+		n += len(m.XXX_unrecognized)
+	}
 	return n
 }
 
 func (m *ProcessDetails) Size() (n int) {
+	if m == nil {
+		return 0
+	}
 	var l int
 	_ = l
 	l = len(m.ImageName)
 	if l > 0 {
 		n += 1 + l + sovRunhcs(uint64(l))
 	}
-	l = types.SizeOfStdTime(m.CreatedAt)
+	l = github_com_gogo_protobuf_types.SizeOfStdTime(m.CreatedAt)
 	n += 1 + l + sovRunhcs(uint64(l))
 	if m.KernelTime_100Ns != 0 {
 		n += 1 + sovRunhcs(uint64(m.KernelTime_100Ns))
@@ -341,6 +463,9 @@ func (m *ProcessDetails) Size() (n int) {
 	if l > 0 {
 		n += 1 + l + sovRunhcs(uint64(l))
 	}
+	if m.XXX_unrecognized != nil {
+		n += len(m.XXX_unrecognized)
+	}
 	return n
 }
 
@@ -369,6 +494,7 @@ func (this *Options) String() string {
 		`SandboxPlatform:` + fmt.Sprintf("%v", this.SandboxPlatform) + `,`,
 		`SandboxIsolation:` + fmt.Sprintf("%v", this.SandboxIsolation) + `,`,
 		`BootFilesRootPath:` + fmt.Sprintf("%v", this.BootFilesRootPath) + `,`,
+		`XXX_unrecognized:` + fmt.Sprintf("%v", this.XXX_unrecognized) + `,`,
 		`}`,
 	}, "")
 	return s
@@ -379,7 +505,7 @@ func (this *ProcessDetails) String() string {
 	}
 	s := strings.Join([]string{`&ProcessDetails{`,
 		`ImageName:` + fmt.Sprintf("%v", this.ImageName) + `,`,
-		`CreatedAt:` + strings.Replace(strings.Replace(this.CreatedAt.String(), "Timestamp", "google_protobuf1.Timestamp", 1), `&`, ``, 1) + `,`,
+		`CreatedAt:` + strings.Replace(strings.Replace(this.CreatedAt.String(), "Timestamp", "types.Timestamp", 1), `&`, ``, 1) + `,`,
 		`KernelTime_100Ns:` + fmt.Sprintf("%v", this.KernelTime_100Ns) + `,`,
 		`MemoryCommitBytes:` + fmt.Sprintf("%v", this.MemoryCommitBytes) + `,`,
 		`MemoryWorkingSetPrivateBytes:` + fmt.Sprintf("%v", this.MemoryWorkingSetPrivateBytes) + `,`,
@@ -387,6 +513,7 @@ func (this *ProcessDetails) String() string {
 		`ProcessID:` + fmt.Sprintf("%v", this.ProcessID) + `,`,
 		`UserTime_100Ns:` + fmt.Sprintf("%v", this.UserTime_100Ns) + `,`,
 		`ExecID:` + fmt.Sprintf("%v", this.ExecID) + `,`,
+		`XXX_unrecognized:` + fmt.Sprintf("%v", this.XXX_unrecognized) + `,`,
 		`}`,
 	}, "")
 	return s
@@ -414,7 +541,7 @@ func (m *Options) Unmarshal(dAtA []byte) error {
 			}
 			b := dAtA[iNdEx]
 			iNdEx++
-			wire |= (uint64(b) & 0x7F) << shift
+			wire |= uint64(b&0x7F) << shift
 			if b < 0x80 {
 				break
 			}
@@ -442,7 +569,7 @@ func (m *Options) Unmarshal(dAtA []byte) error {
 				}
 				b := dAtA[iNdEx]
 				iNdEx++
-				v |= (int(b) & 0x7F) << shift
+				v |= int(b&0x7F) << shift
 				if b < 0x80 {
 					break
 				}
@@ -462,7 +589,7 @@ func (m *Options) Unmarshal(dAtA []byte) error {
 				}
 				b := dAtA[iNdEx]
 				iNdEx++
-				m.DebugType |= (Options_DebugType(b) & 0x7F) << shift
+				m.DebugType |= Options_DebugType(b&0x7F) << shift
 				if b < 0x80 {
 					break
 				}
@@ -481,7 +608,7 @@ func (m *Options) Unmarshal(dAtA []byte) error {
 				}
 				b := dAtA[iNdEx]
 				iNdEx++
-				stringLen |= (uint64(b) & 0x7F) << shift
+				stringLen |= uint64(b&0x7F) << shift
 				if b < 0x80 {
 					break
 				}
@@ -491,6 +618,9 @@ func (m *Options) Unmarshal(dAtA []byte) error {
 				return ErrInvalidLengthRunhcs
 			}
 			postIndex := iNdEx + intStringLen
+			if postIndex < 0 {
+				return ErrInvalidLengthRunhcs
+			}
 			if postIndex > l {
 				return io.ErrUnexpectedEOF
 			}
@@ -510,7 +640,7 @@ func (m *Options) Unmarshal(dAtA []byte) error {
 				}
 				b := dAtA[iNdEx]
 				iNdEx++
-				stringLen |= (uint64(b) & 0x7F) << shift
+				stringLen |= uint64(b&0x7F) << shift
 				if b < 0x80 {
 					break
 				}
@@ -520,6 +650,9 @@ func (m *Options) Unmarshal(dAtA []byte) error {
 				return ErrInvalidLengthRunhcs
 			}
 			postIndex := iNdEx + intStringLen
+			if postIndex < 0 {
+				return ErrInvalidLengthRunhcs
+			}
 			if postIndex > l {
 				return io.ErrUnexpectedEOF
 			}
@@ -539,7 +672,7 @@ func (m *Options) Unmarshal(dAtA []byte) error {
 				}
 				b := dAtA[iNdEx]
 				iNdEx++
-				stringLen |= (uint64(b) & 0x7F) << shift
+				stringLen |= uint64(b&0x7F) << shift
 				if b < 0x80 {
 					break
 				}
@@ -549,6 +682,9 @@ func (m *Options) Unmarshal(dAtA []byte) error {
 				return ErrInvalidLengthRunhcs
 			}
 			postIndex := iNdEx + intStringLen
+			if postIndex < 0 {
+				return ErrInvalidLengthRunhcs
+			}
 			if postIndex > l {
 				return io.ErrUnexpectedEOF
 			}
@@ -568,7 +704,7 @@ func (m *Options) Unmarshal(dAtA []byte) error {
 				}
 				b := dAtA[iNdEx]
 				iNdEx++
-				m.SandboxIsolation |= (Options_SandboxIsolation(b) & 0x7F) << shift
+				m.SandboxIsolation |= Options_SandboxIsolation(b&0x7F) << shift
 				if b < 0x80 {
 					break
 				}
@@ -587,7 +723,7 @@ func (m *Options) Unmarshal(dAtA []byte) error {
 				}
 				b := dAtA[iNdEx]
 				iNdEx++
-				stringLen |= (uint64(b) & 0x7F) << shift
+				stringLen |= uint64(b&0x7F) << shift
 				if b < 0x80 {
 					break
 				}
@@ -597,6 +733,9 @@ func (m *Options) Unmarshal(dAtA []byte) error {
 				return ErrInvalidLengthRunhcs
 			}
 			postIndex := iNdEx + intStringLen
+			if postIndex < 0 {
+				return ErrInvalidLengthRunhcs
+			}
 			if postIndex > l {
 				return io.ErrUnexpectedEOF
 			}
@@ -611,9 +750,13 @@ func (m *Options) Unmarshal(dAtA []byte) error {
 			if skippy < 0 {
 				return ErrInvalidLengthRunhcs
 			}
+			if (iNdEx + skippy) < 0 {
+				return ErrInvalidLengthRunhcs
+			}
 			if (iNdEx + skippy) > l {
 				return io.ErrUnexpectedEOF
 			}
+			m.XXX_unrecognized = append(m.XXX_unrecognized, dAtA[iNdEx:iNdEx+skippy]...)
 			iNdEx += skippy
 		}
 	}
@@ -638,7 +781,7 @@ func (m *ProcessDetails) Unmarshal(dAtA []byte) error {
 			}
 			b := dAtA[iNdEx]
 			iNdEx++
-			wire |= (uint64(b) & 0x7F) << shift
+			wire |= uint64(b&0x7F) << shift
 			if b < 0x80 {
 				break
 			}
@@ -666,7 +809,7 @@ func (m *ProcessDetails) Unmarshal(dAtA []byte) error {
 				}
 				b := dAtA[iNdEx]
 				iNdEx++
-				stringLen |= (uint64(b) & 0x7F) << shift
+				stringLen |= uint64(b&0x7F) << shift
 				if b < 0x80 {
 					break
 				}
@@ -676,6 +819,9 @@ func (m *ProcessDetails) Unmarshal(dAtA []byte) error {
 				return ErrInvalidLengthRunhcs
 			}
 			postIndex := iNdEx + intStringLen
+			if postIndex < 0 {
+				return ErrInvalidLengthRunhcs
+			}
 			if postIndex > l {
 				return io.ErrUnexpectedEOF
 			}
@@ -695,7 +841,7 @@ func (m *ProcessDetails) Unmarshal(dAtA []byte) error {
 				}
 				b := dAtA[iNdEx]
 				iNdEx++
-				msglen |= (int(b) & 0x7F) << shift
+				msglen |= int(b&0x7F) << shift
 				if b < 0x80 {
 					break
 				}
@@ -704,10 +850,13 @@ func (m *ProcessDetails) Unmarshal(dAtA []byte) error {
 				return ErrInvalidLengthRunhcs
 			}
 			postIndex := iNdEx + msglen
+			if postIndex < 0 {
+				return ErrInvalidLengthRunhcs
+			}
 			if postIndex > l {
 				return io.ErrUnexpectedEOF
 			}
-			if err := types.StdTimeUnmarshal(&m.CreatedAt, dAtA[iNdEx:postIndex]); err != nil {
+			if err := github_com_gogo_protobuf_types.StdTimeUnmarshal(&m.CreatedAt, dAtA[iNdEx:postIndex]); err != nil {
 				return err
 			}
 			iNdEx = postIndex
@@ -725,7 +874,7 @@ func (m *ProcessDetails) Unmarshal(dAtA []byte) error {
 				}
 				b := dAtA[iNdEx]
 				iNdEx++
-				m.KernelTime_100Ns |= (uint64(b) & 0x7F) << shift
+				m.KernelTime_100Ns |= uint64(b&0x7F) << shift
 				if b < 0x80 {
 					break
 				}
@@ -744,7 +893,7 @@ func (m *ProcessDetails) Unmarshal(dAtA []byte) error {
 				}
 				b := dAtA[iNdEx]
 				iNdEx++
-				m.MemoryCommitBytes |= (uint64(b) & 0x7F) << shift
+				m.MemoryCommitBytes |= uint64(b&0x7F) << shift
 				if b < 0x80 {
 					break
 				}
@@ -763,7 +912,7 @@ func (m *ProcessDetails) Unmarshal(dAtA []byte) error {
 				}
 				b := dAtA[iNdEx]
 				iNdEx++
-				m.MemoryWorkingSetPrivateBytes |= (uint64(b) & 0x7F) << shift
+				m.MemoryWorkingSetPrivateBytes |= uint64(b&0x7F) << shift
 				if b < 0x80 {
 					break
 				}
@@ -782,7 +931,7 @@ func (m *ProcessDetails) Unmarshal(dAtA []byte) error {
 				}
 				b := dAtA[iNdEx]
 				iNdEx++
-				m.MemoryWorkingSetSharedBytes |= (uint64(b) & 0x7F) << shift
+				m.MemoryWorkingSetSharedBytes |= uint64(b&0x7F) << shift
 				if b < 0x80 {
 					break
 				}
@@ -801,7 +950,7 @@ func (m *ProcessDetails) Unmarshal(dAtA []byte) error {
 				}
 				b := dAtA[iNdEx]
 				iNdEx++
-				m.ProcessID |= (uint32(b) & 0x7F) << shift
+				m.ProcessID |= uint32(b&0x7F) << shift
 				if b < 0x80 {
 					break
 				}
@@ -820,7 +969,7 @@ func (m *ProcessDetails) Unmarshal(dAtA []byte) error {
 				}
 				b := dAtA[iNdEx]
 				iNdEx++
-				m.UserTime_100Ns |= (uint64(b) & 0x7F) << shift
+				m.UserTime_100Ns |= uint64(b&0x7F) << shift
 				if b < 0x80 {
 					break
 				}
@@ -839,7 +988,7 @@ func (m *ProcessDetails) Unmarshal(dAtA []byte) error {
 				}
 				b := dAtA[iNdEx]
 				iNdEx++
-				stringLen |= (uint64(b) & 0x7F) << shift
+				stringLen |= uint64(b&0x7F) << shift
 				if b < 0x80 {
 					break
 				}
@@ -849,6 +998,9 @@ func (m *ProcessDetails) Unmarshal(dAtA []byte) error {
 				return ErrInvalidLengthRunhcs
 			}
 			postIndex := iNdEx + intStringLen
+			if postIndex < 0 {
+				return ErrInvalidLengthRunhcs
+			}
 			if postIndex > l {
 				return io.ErrUnexpectedEOF
 			}
@@ -863,9 +1015,13 @@ func (m *ProcessDetails) Unmarshal(dAtA []byte) error {
 			if skippy < 0 {
 				return ErrInvalidLengthRunhcs
 			}
+			if (iNdEx + skippy) < 0 {
+				return ErrInvalidLengthRunhcs
+			}
 			if (iNdEx + skippy) > l {
 				return io.ErrUnexpectedEOF
 			}
+			m.XXX_unrecognized = append(m.XXX_unrecognized, dAtA[iNdEx:iNdEx+skippy]...)
 			iNdEx += skippy
 		}
 	}
@@ -929,10 +1085,13 @@ func skipRunhcs(dAtA []byte) (n int, err error) {
 					break
 				}
 			}
-			iNdEx += length
 			if length < 0 {
 				return 0, ErrInvalidLengthRunhcs
 			}
+			iNdEx += length
+			if iNdEx < 0 {
+				return 0, ErrInvalidLengthRunhcs
+			}
 			return iNdEx, nil
 		case 3:
 			for {
@@ -961,6 +1120,9 @@ func skipRunhcs(dAtA []byte) (n int, err error) {
 					return 0, err
 				}
 				iNdEx = start + next
+				if iNdEx < 0 {
+					return 0, ErrInvalidLengthRunhcs
+				}
 			}
 			return iNdEx, nil
 		case 4:
@@ -979,55 +1141,3 @@ var (
 	ErrInvalidLengthRunhcs = fmt.Errorf("proto: negative length found during unmarshaling")
 	ErrIntOverflowRunhcs   = fmt.Errorf("proto: integer overflow")
 )
-
-func init() {
-	proto.RegisterFile("github.com/Microsoft/hcsshim/cmd/containerd-shim-runhcs-v1/options/runhcs.proto", fileDescriptorRunhcs)
-}
-
-var fileDescriptorRunhcs = []byte{
-	// 704 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xa4, 0x54, 0x4d, 0x6f, 0xda, 0x48,
-	0x18, 0xc6, 0xe1, 0xd3, 0x6f, 0x96, 0xc4, 0x99, 0xe5, 0x80, 0xb2, 0xbb, 0x80, 0xc8, 0x21, 0x89,
-	0x76, 0x63, 0x43, 0xf6, 0xd8, 0x53, 0x09, 0xa0, 0xba, 0x6a, 0x83, 0x65, 0xa2, 0xa6, 0x1f, 0x07,
-	0xcb, 0xd8, 0x83, 0xb1, 0x82, 0x3d, 0xd6, 0xcc, 0x90, 0x86, 0x5b, 0x7f, 0x42, 0x7f, 0x55, 0x95,
-	0x63, 0x8f, 0x95, 0x2a, 0xa5, 0x0d, 0xbf, 0xa4, 0x9a, 0xb1, 0x49, 0xd4, 0x28, 0xea, 0xa5, 0x27,
-	0xc6, 0xcf, 0xf3, 0xbc, 0xcf, 0xfb, 0x29, 0x60, 0x14, 0x84, 0x7c, 0xb6, 0x98, 0xe8, 0x1e, 0x89,
-	0x8c, 0x97, 0xa1, 0x47, 0x09, 0x23, 0x53, 0x6e, 0xcc, 0x3c, 0xc6, 0x66, 0x61, 0x64, 0x78, 0x91,
-	0x6f, 0x78, 0x24, 0xe6, 0x6e, 0x18, 0x63, 0xea, 0x1f, 0x09, 0xec, 0x88, 0x2e, 0xe2, 0x99, 0xc7,
-	0x8e, 0x2e, 0xbb, 0x06, 0x49, 0x78, 0x48, 0x62, 0x66, 0xa4, 0x88, 0x9e, 0x50, 0xc2, 0x09, 0xaa,
-	0xdd, 0xeb, 0xf5, 0x8c, 0xb8, 0xec, 0xee, 0xd6, 0x02, 0x12, 0x10, 0x29, 0x30, 0xc4, 0x2b, 0xd5,
-	0xee, 0x36, 0x03, 0x42, 0x82, 0x39, 0x36, 0xe4, 0xd7, 0x64, 0x31, 0x35, 0x78, 0x18, 0x61, 0xc6,
-	0xdd, 0x28, 0x49, 0x05, 0xed, 0x4f, 0x79, 0x28, 0x8f, 0xd2, 0x2c, 0xa8, 0x06, 0x45, 0x1f, 0x4f,
-	0x16, 0x41, 0x5d, 0x69, 0x29, 0x07, 0x15, 0x3b, 0xfd, 0x40, 0x43, 0x00, 0xf9, 0x70, 0xf8, 0x32,
-	0xc1, 0xf5, 0x8d, 0x96, 0x72, 0xb0, 0x75, 0xbc, 0xaf, 0x3f, 0x56, 0x83, 0x9e, 0x19, 0xe9, 0x7d,
-	0xa1, 0x3f, 0x5b, 0x26, 0xd8, 0x56, 0xfd, 0xf5, 0x13, 0xed, 0x41, 0x95, 0xe2, 0x20, 0x64, 0x9c,
-	0x2e, 0x1d, 0x4a, 0x08, 0xaf, 0xe7, 0x5b, 0xca, 0x81, 0x6a, 0xff, 0xb1, 0x06, 0x6d, 0x42, 0xb8,
-	0x10, 0x31, 0x37, 0xf6, 0x27, 0xe4, 0xca, 0x09, 0x23, 0x37, 0xc0, 0xf5, 0x42, 0x2a, 0xca, 0x40,
-	0x53, 0x60, 0xe8, 0x10, 0xb4, 0xb5, 0x28, 0x99, 0xbb, 0x7c, 0x4a, 0x68, 0x54, 0x2f, 0x4a, 0xdd,
-	0x76, 0x86, 0x5b, 0x19, 0x8c, 0xde, 0xc1, 0xce, 0x9d, 0x1f, 0x23, 0x73, 0x57, 0xd4, 0x57, 0x2f,
-	0xc9, 0x1e, 0xf4, 0x5f, 0xf7, 0x30, 0xce, 0x32, 0xae, 0xa3, 0xec, 0x75, 0xce, 0x3b, 0x04, 0x19,
-	0x50, 0x9b, 0x10, 0xc2, 0x9d, 0x69, 0x38, 0xc7, 0x4c, 0xf6, 0xe4, 0x24, 0x2e, 0x9f, 0xd5, 0xcb,
-	0xb2, 0x96, 0x1d, 0xc1, 0x0d, 0x05, 0x25, 0x3a, 0xb3, 0x5c, 0x3e, 0x6b, 0x1f, 0x82, 0x7a, 0x37,
-	0x1a, 0xa4, 0x42, 0xf1, 0xd4, 0x32, 0xad, 0x81, 0x96, 0x43, 0x15, 0x28, 0x0c, 0xcd, 0x17, 0x03,
-	0x4d, 0x41, 0x65, 0xc8, 0x0f, 0xce, 0xce, 0xb5, 0x8d, 0xb6, 0x01, 0xda, 0xc3, 0x0a, 0xd0, 0x26,
-	0x94, 0x2d, 0x7b, 0x74, 0x32, 0x18, 0x8f, 0xb5, 0x1c, 0xda, 0x02, 0x78, 0xf6, 0xc6, 0x1a, 0xd8,
-	0xaf, 0xcc, 0xf1, 0xc8, 0xd6, 0x94, 0xf6, 0xd7, 0x3c, 0x6c, 0x59, 0x94, 0x78, 0x98, 0xb1, 0x3e,
-	0xe6, 0x6e, 0x38, 0x67, 0xe8, 0x1f, 0x00, 0x39, 0x44, 0x27, 0x76, 0x23, 0x2c, 0x97, 0xaa, 0xda,
-	0xaa, 0x44, 0x4e, 0xdd, 0x08, 0xa3, 0x13, 0x00, 0x8f, 0x62, 0x97, 0x63, 0xdf, 0x71, 0xb9, 0x5c,
-	0xec, 0xe6, 0xf1, 0xae, 0x9e, 0x1e, 0x8c, 0xbe, 0x3e, 0x18, 0xfd, 0x6c, 0x7d, 0x30, 0xbd, 0xca,
-	0xf5, 0x4d, 0x33, 0xf7, 0xf1, 0x5b, 0x53, 0xb1, 0xd5, 0x2c, 0xee, 0x29, 0x47, 0xff, 0x02, 0xba,
-	0xc0, 0x34, 0xc6, 0x73, 0x47, 0x5c, 0x96, 0xd3, 0xed, 0x74, 0x9c, 0x98, 0xc9, 0xd5, 0x16, 0xec,
-	0xed, 0x94, 0x11, 0x0e, 0xdd, 0x4e, 0xe7, 0x94, 0x21, 0x1d, 0xfe, 0x8c, 0x70, 0x44, 0xe8, 0xd2,
-	0xf1, 0x48, 0x14, 0x85, 0xdc, 0x99, 0x2c, 0x39, 0x66, 0x72, 0xc7, 0x05, 0x7b, 0x27, 0xa5, 0x4e,
-	0x24, 0xd3, 0x13, 0x04, 0x1a, 0x42, 0x2b, 0xd3, 0xbf, 0x27, 0xf4, 0x22, 0x8c, 0x03, 0x87, 0x61,
-	0xee, 0x24, 0x34, 0xbc, 0x74, 0x39, 0xce, 0x82, 0x8b, 0x32, 0xf8, 0xef, 0x54, 0x77, 0x9e, 0xca,
-	0xc6, 0x98, 0x5b, 0xa9, 0x28, 0xf5, 0xe9, 0x43, 0xf3, 0x11, 0x1f, 0x36, 0x73, 0x29, 0xf6, 0x33,
-	0x9b, 0x92, 0xb4, 0xf9, 0xeb, 0xa1, 0xcd, 0x58, 0x6a, 0x52, 0x97, 0xff, 0x00, 0x92, 0x74, 0xc0,
-	0x4e, 0xe8, 0xcb, 0x25, 0x57, 0x7b, 0xd5, 0xd5, 0x4d, 0x53, 0xcd, 0xc6, 0x6e, 0xf6, 0x6d, 0x35,
-	0x13, 0x98, 0x3e, 0xda, 0x07, 0x6d, 0xc1, 0x30, 0xfd, 0x69, 0x2c, 0x15, 0x99, 0xa4, 0x2a, 0xf0,
-	0xfb, 0xa1, 0xec, 0x41, 0x19, 0x5f, 0x61, 0x4f, 0x78, 0xaa, 0x62, 0x45, 0x3d, 0x58, 0xdd, 0x34,
-	0x4b, 0x83, 0x2b, 0xec, 0x99, 0x7d, 0xbb, 0x24, 0x28, 0xd3, 0xef, 0xf9, 0xd7, 0xb7, 0x8d, 0xdc,
-	0x97, 0xdb, 0x46, 0xee, 0xc3, 0xaa, 0xa1, 0x5c, 0xaf, 0x1a, 0xca, 0xe7, 0x55, 0x43, 0xf9, 0xbe,
-	0x6a, 0x28, 0x6f, 0x9f, 0xff, 0xfe, 0xdf, 0xcb, 0x93, 0xec, 0xf7, 0x75, 0x6e, 0x52, 0x92, 0x7b,
-	0xff, 0xff, 0x47, 0x00, 0x00, 0x00, 0xff, 0xff, 0xa3, 0x9a, 0x54, 0x17, 0xb5, 0x04, 0x00, 0x00,
-}

vendor/github.com/Microsoft/hcsshim/container.go

@@ -1,8 +1,10 @@
 package hcsshim
 
 import (
+	"context"
 	"fmt"
 	"os"
+	"sync"
 	"time"
 
 	"github.com/Microsoft/hcsshim/internal/hcs"
@@ -52,7 +54,10 @@ const (
 type ResourceModificationRequestResponse = schema1.ResourceModificationRequestResponse
 
 type container struct {
-	system *hcs.System
+	system   *hcs.System
+	waitOnce sync.Once
+	waitErr  error
+	waitCh   chan struct{}
 }
 
 // createComputeSystemAdditionalJSON is read from the environment at initialisation
@@ -71,61 +76,87 @@ func CreateContainer(id string, c *ContainerConfig) (Container, error) {
 		return nil, fmt.Errorf("failed to merge additional JSON '%s': %s", createContainerAdditionalJSON, err)
 	}
 
-	system, err := hcs.CreateComputeSystem(id, fullConfig)
+	system, err := hcs.CreateComputeSystem(context.Background(), id, fullConfig)
 	if err != nil {
 		return nil, err
 	}
-	return &container{system}, err
+	return &container{system: system}, err
 }
 
 // OpenContainer opens an existing container by ID.
 func OpenContainer(id string) (Container, error) {
-	system, err := hcs.OpenComputeSystem(id)
+	system, err := hcs.OpenComputeSystem(context.Background(), id)
 	if err != nil {
 		return nil, err
 	}
-	return &container{system}, err
+	return &container{system: system}, err
 }
 
 // GetContainers gets a list of the containers on the system that match the query
 func GetContainers(q ComputeSystemQuery) ([]ContainerProperties, error) {
-	return hcs.GetComputeSystems(q)
+	return hcs.GetComputeSystems(context.Background(), q)
 }
 
 // Start synchronously starts the container.
 func (container *container) Start() error {
-	return convertSystemError(container.system.Start(), container)
+	return convertSystemError(container.system.Start(context.Background()), container)
 }
 
 // Shutdown requests a container shutdown, but it may not actually be shutdown until Wait() succeeds.
 func (container *container) Shutdown() error {
-	return convertSystemError(container.system.Shutdown(), container)
+	err := container.system.Shutdown(context.Background())
+	if err != nil {
+		return convertSystemError(err, container)
+	}
+	return &ContainerError{Container: container, Err: ErrVmcomputeOperationPending, Operation: "hcsshim::ComputeSystem::Shutdown"}
 }
 
 // Terminate requests a container terminate, but it may not actually be terminated until Wait() succeeds.
 func (container *container) Terminate() error {
-	return convertSystemError(container.system.Terminate(), container)
+	err := container.system.Terminate(context.Background())
+	if err != nil {
+		return convertSystemError(err, container)
+	}
+	return &ContainerError{Container: container, Err: ErrVmcomputeOperationPending, Operation: "hcsshim::ComputeSystem::Terminate"}
 }
 
 // Waits synchronously waits for the container to shutdown or terminate.
 func (container *container) Wait() error {
-	return convertSystemError(container.system.Wait(), container)
+	err := container.system.Wait()
+	if err == nil {
+		err = container.system.ExitError()
+	}
+	return convertSystemError(err, container)
 }
 
 // WaitTimeout synchronously waits for the container to terminate or the duration to elapse. It
 // returns false if timeout occurs.
-func (container *container) WaitTimeout(t time.Duration) error {
+func (container *container) WaitTimeout(timeout time.Duration) error {
-	return convertSystemError(container.system.WaitTimeout(t), container)
+	container.waitOnce.Do(func() {
+		container.waitCh = make(chan struct{})
+		go func() {
+			container.waitErr = container.Wait()
+			close(container.waitCh)
+		}()
+	})
+	t := time.NewTimer(timeout)
+	defer t.Stop()
+	select {
+	case <-t.C:
+		return &ContainerError{Container: container, Err: ErrTimeout, Operation: "hcsshim::ComputeSystem::Wait"}
+	case <-container.waitCh:
+		return container.waitErr
+	}
 }
 
 // Pause pauses the execution of a container.
 func (container *container) Pause() error {
-	return convertSystemError(container.system.Pause(), container)
+	return convertSystemError(container.system.Pause(context.Background()), container)
 }
 
 // Resume resumes the execution of a container.
 func (container *container) Resume() error {
-	return convertSystemError(container.system.Resume(), container)
+	return convertSystemError(container.system.Resume(context.Background()), container)
 }
 
 // HasPendingUpdates returns true if the container has updates pending to install
@@ -135,7 +166,7 @@ func (container *container) HasPendingUpdates() (bool, error) {
 
 // Statistics returns statistics for the container. This is a legacy v1 call
 func (container *container) Statistics() (Statistics, error) {
-	properties, err := container.system.Properties(schema1.PropertyTypeStatistics)
+	properties, err := container.system.Properties(context.Background(), schema1.PropertyTypeStatistics)
 	if err != nil {
 		return Statistics{}, convertSystemError(err, container)
 	}
@@ -145,7 +176,7 @@ func (container *container) Statistics() (Statistics, error) {
 
 // ProcessList returns an array of ProcessListItems for the container. This is a legacy v1 call
 func (container *container) ProcessList() ([]ProcessListItem, error) {
-	properties, err := container.system.Properties(schema1.PropertyTypeProcessList)
+	properties, err := container.system.Properties(context.Background(), schema1.PropertyTypeProcessList)
 	if err != nil {
 		return nil, convertSystemError(err, container)
 	}
@@ -155,7 +186,7 @@ func (container *container) ProcessList() ([]ProcessListItem, error) {
 
 // This is a legacy v1 call
 func (container *container) MappedVirtualDisks() (map[int]MappedVirtualDiskController, error) {
-	properties, err := container.system.Properties(schema1.PropertyTypeMappedVirtualDisk)
+	properties, err := container.system.Properties(context.Background(), schema1.PropertyTypeMappedVirtualDisk)
 	if err != nil {
 		return nil, convertSystemError(err, container)
 	}
@@ -165,20 +196,20 @@ func (container *container) MappedVirtualDisks() (map[int]MappedVirtualDiskContr
 
 // CreateProcess launches a new process within the container.
 func (container *container) CreateProcess(c *ProcessConfig) (Process, error) {
-	p, err := container.system.CreateProcess(c)
+	p, err := container.system.CreateProcessNoStdio(c)
 	if err != nil {
 		return nil, convertSystemError(err, container)
 	}
-	return &process{p}, nil
+	return &process{p: p.(*hcs.Process)}, nil
 }
 
 // OpenProcess gets an interface to an existing process within the container.
 func (container *container) OpenProcess(pid int) (Process, error) {
-	p, err := container.system.OpenProcess(pid)
+	p, err := container.system.OpenProcess(context.Background(), pid)
 	if err != nil {
 		return nil, convertSystemError(err, container)
 	}
-	return &process{p}, nil
+	return &process{p: p}, nil
 }
 
 // Close cleans up any state associated with the container but does not terminate or wait for it.
@@ -188,5 +219,5 @@ func (container *container) Close() error {
 
 // Modify the System
 func (container *container) Modify(config *ResourceModificationRequestResponse) error {
-	return convertSystemError(container.system.Modify(config), container)
+	return convertSystemError(container.system.Modify(context.Background(), config), container)
 }

vendor/github.com/Microsoft/hcsshim/go.mod

@@ -0,0 +1,35 @@
+module github.com/Microsoft/hcsshim
+
+go 1.12
+
+require (
+	github.com/Microsoft/go-winio v0.4.14
+	github.com/blang/semver v3.1.0+incompatible // indirect
+	github.com/containerd/console v0.0.0-20180822173158-c12b1e7919c1
+	github.com/containerd/containerd v0.0.0-20190214164719-faec567304bb
+	github.com/containerd/continuity v0.0.0-20190426062206-aaeac12a7ffc // indirect
+	github.com/containerd/fifo v0.0.0-20190226154929-a9fb20d87448 // indirect
+	github.com/containerd/go-runc v0.0.0-20180907222934-5a6d9f37cfa3
+	github.com/containerd/ttrpc v0.0.0-20180920185216-2a805f718635
+	github.com/containerd/typeurl v0.0.0-20180627222232-a93fcdb778cd
+	github.com/gogo/protobuf v1.2.1
+	github.com/hashicorp/errwrap v0.0.0-20141028054710-7554cd9344ce // indirect
+	github.com/hashicorp/go-multierror v0.0.0-20161216184304-ed905158d874 // indirect
+	github.com/opencontainers/go-digest v0.0.0-20180430190053-c9281466c8b2 // indirect
+	github.com/opencontainers/runc v0.0.0-20190115041553-12f6a991201f // indirect
+	github.com/opencontainers/runtime-spec v0.0.0-20190207185410-29686dbc5559
+	github.com/opencontainers/runtime-tools v0.0.0-20181011054405-1d69bd0f9c39
+	github.com/pkg/errors v0.8.1
+	github.com/sirupsen/logrus v1.4.1
+	github.com/syndtr/gocapability v0.0.0-20170704070218-db04d3cc01c8 // indirect
+	github.com/urfave/cli v0.0.0-20171014202726-7bc6a0acffa5
+	github.com/xeipuuv/gojsonpointer v0.0.0-20180127040702-4e3ac2762d5f // indirect
+	github.com/xeipuuv/gojsonreference v0.0.0-20180127040603-bd5ef7bd5415 // indirect
+	github.com/xeipuuv/gojsonschema v0.0.0-20180618132009-1d523034197f // indirect
+	go.opencensus.io v0.22.0
+	golang.org/x/sync v0.0.0-20190227155943-e225da77a7e6
+	golang.org/x/sys v0.0.0-20190507160741-ecd444e8653b
+	google.golang.org/grpc v1.20.1
+	gotest.tools v2.2.0+incompatible // indirect
+	k8s.io/kubernetes v1.13.0
+)

vendor/github.com/Microsoft/hcsshim/hnsendpoint.go

@@ -39,11 +39,21 @@ func HNSListEndpointRequest() ([]HNSEndpoint, error) {
 
 // HotAttachEndpoint makes a HCS Call to attach the endpoint to the container
 func HotAttachEndpoint(containerID string, endpointID string) error {
+	endpoint, err := GetHNSEndpointByID(endpointID)
+	isAttached, err := endpoint.IsAttached(containerID)
+	if isAttached {
+		return err
+	}
 	return modifyNetworkEndpoint(containerID, endpointID, Add)
 }
 
 // HotDetachEndpoint makes a HCS Call to detach the endpoint from the container
 func HotDetachEndpoint(containerID string, endpointID string) error {
+	endpoint, err := GetHNSEndpointByID(endpointID)
+	isAttached, err := endpoint.IsAttached(containerID)
+	if !isAttached {
+		return err
+	}
 	return modifyNetworkEndpoint(containerID, endpointID, Remove)
 }
 

vendor/github.com/Microsoft/hcsshim/internal/cow/cow.go

@@ -0,0 +1,80 @@
+package cow
+
+import (
+	"context"
+	"io"
+
+	"github.com/Microsoft/hcsshim/internal/schema1"
+)
+
+// Process is the interface for an OS process running in a container or utility VM.
+type Process interface {
+	// Close releases resources associated with the process and closes the
+	// writer and readers returned by Stdio. Depending on the implementation,
+	// this may also terminate the process.
+	Close() error
+	// CloseStdin causes the process's stdin handle to receive EOF/EPIPE/whatever
+	// is appropriate to indicate that no more data is available.
+	CloseStdin(ctx context.Context) error
+	// Pid returns the process ID.
+	Pid() int
+	// Stdio returns the stdio streams for a process. These may be nil if a stream
+	// was not requested during CreateProcess.
+	Stdio() (_ io.Writer, _ io.Reader, _ io.Reader)
+	// ResizeConsole resizes the virtual terminal associated with the process.
+	ResizeConsole(ctx context.Context, width, height uint16) error
+	// Kill sends a SIGKILL or equivalent signal to the process and returns whether
+	// the signal was delivered. It does not wait for the process to terminate.
+	Kill(ctx context.Context) (bool, error)
+	// Signal sends a signal to the process and returns whether the signal was
+	// delivered. The input is OS specific (either
+	// guestrequest.SignalProcessOptionsWCOW or
+	// guestrequest.SignalProcessOptionsLCOW). It does not wait for the process
+	// to terminate.
+	Signal(ctx context.Context, options interface{}) (bool, error)
+	// Wait waits for the process to complete, or for a connection to the process to be
+	// terminated by some error condition (including calling Close).
+	Wait() error
+	// ExitCode returns the exit code of the process. Returns an error if the process is
+	// not running.
+	ExitCode() (int, error)
+}
+
+// ProcessHost is the interface for creating processes.
+type ProcessHost interface {
+	// CreateProcess creates a process. The configuration is host specific
+	// (either hcsschema.ProcessParameters or lcow.ProcessParameters).
+	CreateProcess(ctx context.Context, config interface{}) (Process, error)
+	// OS returns the host's operating system, "linux" or "windows".
+	OS() string
+	// IsOCI specifies whether this is an OCI-compliant process host. If true,
+	// then the configuration passed to CreateProcess should have an OCI process
+	// spec (or nil if this is the initial process in an OCI container).
+	// Otherwise, it should have the HCS-specific process parameters.
+	IsOCI() bool
+}
+
+// Container is the interface for container objects, either running on the host or
+// in a utility VM.
+type Container interface {
+	ProcessHost
+	// Close releases the resources associated with the container. Depending on
+	// the implementation, this may also terminate the container.
+	Close() error
+	// ID returns the container ID.
+	ID() string
+	// Properties returns the requested container properties.
+	Properties(ctx context.Context, types ...schema1.PropertyType) (*schema1.ContainerProperties, error)
+	// Start starts a container.
+	Start(ctx context.Context) error
+	// Shutdown sends a shutdown request to the container (but does not wait for
+	// the shutdown to complete).
+	Shutdown(ctx context.Context) error
+	// Terminate sends a terminate request to the container (but does not wait
+	// for the terminate to complete).
+	Terminate(ctx context.Context) error
+	// Wait waits for the container to terminate, or for the connection to the
+	// container to be terminated by some error condition (including calling
+	// Close).
+	Wait() error
+}

vendor/github.com/Microsoft/hcsshim/internal/guestrequest/types.go

@@ -1,100 +0,0 @@
-package guestrequest
-
-import (
-	"github.com/Microsoft/hcsshim/internal/schema2"
-)
-
-// Arguably, many of these (at least CombinedLayers) should have been generated
-// by swagger.
-//
-// This will also change package name due to an inbound breaking change.
-
-// This class is used by a modify request to add or remove a combined layers
-// structure in the guest. For windows, the GCS applies a filter in ContainerRootPath
-// using the specified layers as the parent content. Ignores property ScratchPath
-// since the container path is already the scratch path. For linux, the GCS unions
-// the specified layers and ScratchPath together, placing the resulting union
-// filesystem at ContainerRootPath.
-type CombinedLayers struct {
-	ContainerRootPath string            `json:"ContainerRootPath,omitempty"`
-	Layers            []hcsschema.Layer `json:"Layers,omitempty"`
-	ScratchPath       string            `json:"ScratchPath,omitempty"`
-}
-
-// Defines the schema for hosted settings passed to GCS and/or OpenGCS
-
-// SCSI. Scratch space for remote file-system commands, or R/W layer for containers
-type LCOWMappedVirtualDisk struct {
-	MountPath  string `json:"MountPath,omitempty"` // /tmp/scratch for an LCOW utility VM being used as a service VM
-	Lun        uint8  `json:"Lun,omitempty"`
-	Controller uint8  `json:"Controller,omitempty"`
-	ReadOnly   bool   `json:"ReadOnly,omitempty"`
-}
-
-type WCOWMappedVirtualDisk struct {
-	ContainerPath string `json:"ContainerPath,omitempty"`
-	Lun           int32  `json:"Lun,omitempty"`
-}
-
-type LCOWMappedDirectory struct {
-	MountPath string `json:"MountPath,omitempty"`
-	Port      int32  `json:"Port,omitempty"`
-	ShareName string `json:"ShareName,omitempty"` // If empty not using ANames (not currently supported)
-	ReadOnly  bool   `json:"ReadOnly,omitempty"`
-}
-
-// Read-only layers over VPMem
-type LCOWMappedVPMemDevice struct {
-	DeviceNumber uint32 `json:"DeviceNumber,omitempty"`
-	MountPath    string `json:"MountPath,omitempty"` // /tmp/pN
-}
-
-type LCOWNetworkAdapter struct {
-	NamespaceID     string `json:",omitempty"`
-	ID              string `json:",omitempty"`
-	MacAddress      string `json:",omitempty"`
-	IPAddress       string `json:",omitempty"`
-	PrefixLength    uint8  `json:",omitempty"`
-	GatewayAddress  string `json:",omitempty"`
-	DNSSuffix       string `json:",omitempty"`
-	DNSServerList   string `json:",omitempty"`
-	EnableLowMetric bool   `json:",omitempty"`
-	EncapOverhead   uint16 `json:",omitempty"`
-}
-
-type ResourceType string
-
-const (
-	// These are constants for v2 schema modify guest requests.
-	ResourceTypeMappedDirectory   ResourceType = "MappedDirectory"
-	ResourceTypeMappedVirtualDisk ResourceType = "MappedVirtualDisk"
-	ResourceTypeNetwork           ResourceType = "Network"
-	ResourceTypeNetworkNamespace  ResourceType = "NetworkNamespace"
-	ResourceTypeCombinedLayers    ResourceType = "CombinedLayers"
-	ResourceTypeVPMemDevice       ResourceType = "VPMemDevice"
-)
-
-// GuestRequest is for modify commands passed to the guest.
-type GuestRequest struct {
-	RequestType  string       `json:"RequestType,omitempty"`
-	ResourceType ResourceType `json:"ResourceType,omitempty"`
-	Settings     interface{}  `json:"Settings,omitempty"`
-}
-
-type NetworkModifyRequest struct {
-	AdapterId   string      `json:"AdapterId,omitempty"`
-	RequestType string      `json:"RequestType,omitempty"`
-	Settings    interface{} `json:"Settings,omitempty"`
-}
-
-type RS4NetworkModifyRequest struct {
-	AdapterInstanceId string      `json:"AdapterInstanceId,omitempty"`
-	RequestType       string      `json:"RequestType,omitempty"`
-	Settings          interface{} `json:"Settings,omitempty"`
-}
-
-// SignalProcessOptions is the options passed to either WCOW or LCOW
-// to signal a given process.
-type SignalProcessOptions struct {
-	Signal int `json:,omitempty`
-}

vendor/github.com/Microsoft/hcsshim/internal/guid/guid.go

@@ -1,69 +0,0 @@
-package guid
-
-import (
-	"crypto/rand"
-	"encoding/json"
-	"fmt"
-	"io"
-	"strconv"
-	"strings"
-)
-
-var _ = (json.Marshaler)(&GUID{})
-var _ = (json.Unmarshaler)(&GUID{})
-
-type GUID [16]byte
-
-func New() GUID {
-	g := GUID{}
-	_, err := io.ReadFull(rand.Reader, g[:])
-	if err != nil {
-		panic(err)
-	}
-	return g
-}
-
-func (g GUID) String() string {
-	return fmt.Sprintf("%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x-%02x", g[3], g[2], g[1], g[0], g[5], g[4], g[7], g[6], g[8:10], g[10:])
-}
-
-func FromString(s string) GUID {
-	if len(s) != 36 {
-		panic(fmt.Sprintf("invalid GUID length: %d", len(s)))
-	}
-	if s[8] != '-' || s[13] != '-' || s[18] != '-' || s[23] != '-' {
-		panic("invalid GUID format")
-	}
-	indexOrder := [16]int{
-		0, 2, 4, 6,
-		9, 11,
-		14, 16,
-		19, 21,
-		24, 26, 28, 30, 32, 34,
-	}
-	byteOrder := [16]int{
-		3, 2, 1, 0,
-		5, 4,
-		7, 6,
-		8, 9,
-		10, 11, 12, 13, 14, 15,
-	}
-	var g GUID
-	for i, x := range indexOrder {
-		b, err := strconv.ParseInt(s[x:x+2], 16, 16)
-		if err != nil {
-			panic(err)
-		}
-		g[byteOrder[i]] = byte(b)
-	}
-	return g
-}
-
-func (g GUID) MarshalJSON() ([]byte, error) {
-	return json.Marshal(g.String())
-}
-
-func (g *GUID) UnmarshalJSON(data []byte) error {
-	*g = FromString(strings.Trim(string(data), "\""))
-	return nil
-}

vendor/github.com/Microsoft/hcsshim/internal/hcs/callback.go

@@ -1,10 +1,13 @@
 package hcs
 
 import (
+	"fmt"
 	"sync"
 	"syscall"
 
 	"github.com/Microsoft/hcsshim/internal/interop"
+	"github.com/Microsoft/hcsshim/internal/logfields"
+	"github.com/Microsoft/hcsshim/internal/vmcompute"
 	"github.com/sirupsen/logrus"
 )
 
@@ -40,35 +43,83 @@ var (
 )
 
 type hcsNotification uint32
+
+func (hn hcsNotification) String() string {
+	switch hn {
+	case hcsNotificationSystemExited:
+		return "SystemExited"
+	case hcsNotificationSystemCreateCompleted:
+		return "SystemCreateCompleted"
+	case hcsNotificationSystemStartCompleted:
+		return "SystemStartCompleted"
+	case hcsNotificationSystemPauseCompleted:
+		return "SystemPauseCompleted"
+	case hcsNotificationSystemResumeCompleted:
+		return "SystemResumeCompleted"
+	case hcsNotificationSystemCrashReport:
+		return "SystemCrashReport"
+	case hcsNotificationSystemSiloJobCreated:
+		return "SystemSiloJobCreated"
+	case hcsNotificationSystemSaveCompleted:
+		return "SystemSaveCompleted"
+	case hcsNotificationSystemRdpEnhancedModeStateChanged:
+		return "SystemRdpEnhancedModeStateChanged"
+	case hcsNotificationSystemShutdownFailed:
+		return "SystemShutdownFailed"
+	case hcsNotificationSystemGetPropertiesCompleted:
+		return "SystemGetPropertiesCompleted"
+	case hcsNotificationSystemModifyCompleted:
+		return "SystemModifyCompleted"
+	case hcsNotificationSystemCrashInitiated:
+		return "SystemCrashInitiated"
+	case hcsNotificationSystemGuestConnectionClosed:
+		return "SystemGuestConnectionClosed"
+	case hcsNotificationProcessExited:
+		return "ProcessExited"
+	case hcsNotificationInvalid:
+		return "Invalid"
+	case hcsNotificationServiceDisconnect:
+		return "ServiceDisconnect"
+	default:
+		return fmt.Sprintf("Unknown: %d", hn)
+	}
+}
+
 type notificationChannel chan error
 
 type notifcationWatcherContext struct {
 	channels notificationChannels
-	handle   hcsCallback
+	handle   vmcompute.HcsCallback
+
+	systemID  string
+	processID int
 }
 
 type notificationChannels map[hcsNotification]notificationChannel
 
-func newChannels() notificationChannels {
+func newSystemChannels() notificationChannels {
 	channels := make(notificationChannels)
+	for _, notif := range []hcsNotification{
+		hcsNotificationServiceDisconnect,
+		hcsNotificationSystemExited,
+		hcsNotificationSystemCreateCompleted,
+		hcsNotificationSystemStartCompleted,
+		hcsNotificationSystemPauseCompleted,
+		hcsNotificationSystemResumeCompleted,
+	} {
+		channels[notif] = make(notificationChannel, 1)
+	}
+	return channels
+}
 
-	channels[hcsNotificationSystemExited] = make(notificationChannel, 1)
+func newProcessChannels() notificationChannels {
-	channels[hcsNotificationSystemCreateCompleted] = make(notificationChannel, 1)
+	channels := make(notificationChannels)
-	channels[hcsNotificationSystemStartCompleted] = make(notificationChannel, 1)
+	for _, notif := range []hcsNotification{
-	channels[hcsNotificationSystemPauseCompleted] = make(notificationChannel, 1)
+		hcsNotificationServiceDisconnect,
-	channels[hcsNotificationSystemResumeCompleted] = make(notificationChannel, 1)
+		hcsNotificationProcessExited,
-	channels[hcsNotificationProcessExited] = make(notificationChannel, 1)
+	} {
-	channels[hcsNotificationServiceDisconnect] = make(notificationChannel, 1)
+		channels[notif] = make(notificationChannel, 1)
-	channels[hcsNotificationSystemCrashReport] = make(notificationChannel, 1)
+	}
-	channels[hcsNotificationSystemSiloJobCreated] = make(notificationChannel, 1)
-	channels[hcsNotificationSystemSaveCompleted] = make(notificationChannel, 1)
-	channels[hcsNotificationSystemRdpEnhancedModeStateChanged] = make(notificationChannel, 1)
-	channels[hcsNotificationSystemShutdownFailed] = make(notificationChannel, 1)
-	channels[hcsNotificationSystemGetPropertiesCompleted] = make(notificationChannel, 1)
-	channels[hcsNotificationSystemModifyCompleted] = make(notificationChannel, 1)
-	channels[hcsNotificationSystemCrashInitiated] = make(notificationChannel, 1)
-	channels[hcsNotificationSystemGuestConnectionClosed] = make(notificationChannel, 1)
-
 	return channels
 }
 
@@ -92,12 +143,17 @@ func notificationWatcher(notificationType hcsNotification, callbackNumber uintpt
 		return 0
 	}
 
+	log := logrus.WithFields(logrus.Fields{
+		"notification-type": notificationType.String(),
+		"system-id":         context.systemID,
+	})
+	if context.processID != 0 {
+		log.Data[logfields.ProcessID] = context.processID
+	}
+	log.Debug("HCS notification")
+
 	if channel, ok := context.channels[notificationType]; ok {
 		channel <- result
-	} else {
-		logrus.WithFields(logrus.Fields{
-			"notification-type": notificationType,
-		}).Warn("Received a callback of an unsupported type")
 	}
 
 	return 0

vendor/github.com/Microsoft/hcsshim/internal/hcs/errors.go

@@ -1,14 +1,14 @@
 package hcs
 
 import (
+	"context"
 	"encoding/json"
 	"errors"
 	"fmt"
+	"net"
 	"syscall"
 
-	"github.com/Microsoft/hcsshim/internal/interop"
+	"github.com/Microsoft/hcsshim/internal/log"
-	"github.com/Microsoft/hcsshim/internal/logfields"
-	"github.com/sirupsen/logrus"
 )
 
 var (
@@ -117,17 +117,11 @@ func (ev *ErrorEvent) String() string {
 	return evs
 }
 
-func processHcsResult(resultp *uint16) []ErrorEvent {
+func processHcsResult(ctx context.Context, resultJSON string) []ErrorEvent {
-	if resultp != nil {
+	if resultJSON != "" {
-		resultj := interop.ConvertAndFreeCoTaskMemString(resultp)
-		logrus.WithField(logfields.JSON, resultj).
-			Debug("HCS Result")
 		result := &hcsResult{}
-		if err := json.Unmarshal([]byte(resultj), result); err != nil {
+		if err := json.Unmarshal([]byte(resultJSON), result); err != nil {
-			logrus.WithFields(logrus.Fields{
+			log.G(ctx).WithError(err).Warning("Could not unmarshal HCS result")
-				logfields.JSON:  resultj,
-				logrus.ErrorKey: err,
-			}).Warning("Could not unmarshal HCS result")
 			return nil
 		}
 		return result.ErrorEvents
@@ -141,6 +135,8 @@ type HcsError struct {
 	Events []ErrorEvent
 }
 
+var _ net.Error = &HcsError{}
+
 func (e *HcsError) Error() string {
 	s := e.Op + ": " + e.Err.Error()
 	for _, ev := range e.Events {
@@ -149,6 +145,16 @@ func (e *HcsError) Error() string {
 	return s
 }
 
+func (e *HcsError) Temporary() bool {
+	err, ok := e.Err.(net.Error)
+	return ok && err.Temporary()
+}
+
+func (e *HcsError) Timeout() bool {
+	err, ok := e.Err.(net.Error)
+	return ok && err.Timeout()
+}
+
 // ProcessError is an error encountered in HCS during an operation on a Process object
 type ProcessError struct {
 	SystemID string
@@ -158,6 +164,8 @@ type ProcessError struct {
 	Events   []ErrorEvent
 }
 
+var _ net.Error = &ProcessError{}
+
 // SystemError is an error encountered in HCS during an operation on a Container object
 type SystemError struct {
 	ID     string
@@ -167,6 +175,8 @@ type SystemError struct {
 	Events []ErrorEvent
 }
 
+var _ net.Error = &SystemError{}
+
 func (e *SystemError) Error() string {
 	s := e.Op + " " + e.ID + ": " + e.Err.Error()
 	for _, ev := range e.Events {
@@ -178,6 +188,16 @@ func (e *SystemError) Error() string {
 	return s
 }
 
+func (e *SystemError) Temporary() bool {
+	err, ok := e.Err.(net.Error)
+	return ok && err.Temporary()
+}
+
+func (e *SystemError) Timeout() bool {
+	err, ok := e.Err.(net.Error)
+	return ok && err.Timeout()
+}
+
 func makeSystemError(system *System, op string, extra string, err error, events []ErrorEvent) error {
 	// Don't double wrap errors
 	if _, ok := err.(*SystemError); ok {
@@ -200,6 +220,16 @@ func (e *ProcessError) Error() string {
 	return s
 }
 
+func (e *ProcessError) Temporary() bool {
+	err, ok := e.Err.(net.Error)
+	return ok && err.Temporary()
+}
+
+func (e *ProcessError) Timeout() bool {
+	err, ok := e.Err.(net.Error)
+	return ok && err.Timeout()
+}
+
 func makeProcessError(process *Process, op string, err error, events []ErrorEvent) error {
 	// Don't double wrap errors
 	if _, ok := err.(*ProcessError); ok {
@@ -242,6 +272,9 @@ func IsPending(err error) bool {
 // IsTimeout returns a boolean indicating whether the error is caused by
 // a timeout waiting for the operation to complete.
 func IsTimeout(err error) bool {
+	if err, ok := err.(net.Error); ok && err.Timeout() {
+		return true
+	}
 	err = getInnerError(err)
 	return err == ErrTimeout
 }
@@ -272,6 +305,13 @@ func IsNotSupported(err error) bool {
 		err == ErrVmcomputeUnknownMessage
 }
 
+// IsOperationInvalidState returns true when err is caused by
+// `ErrVmcomputeOperationInvalidState`.
+func IsOperationInvalidState(err error) bool {
+	err = getInnerError(err)
+	return err == ErrVmcomputeOperationInvalidState
+}
+
 func getInnerError(err error) error {
 	switch pe := err.(type) {
 	case nil:
@@ -285,3 +325,12 @@ func getInnerError(err error) error {
 	}
 	return err
 }
+
+func getOperationLogResult(err error) (string, error) {
+	switch err {
+	case nil:
+		return "Success", nil
+	default:
+		return "Error", err
+	}
+}

vendor/github.com/Microsoft/hcsshim/internal/hcs/hcs.go

@@ -1,48 +0,0 @@
-// Shim for the Host Compute Service (HCS) to manage Windows Server
-// containers and Hyper-V containers.
-
-package hcs
-
-import (
-	"syscall"
-)
-
-//go:generate go run ../../mksyscall_windows.go -output zsyscall_windows.go hcs.go
-
-//sys hcsEnumerateComputeSystems(query string, computeSystems **uint16, result **uint16) (hr error) = vmcompute.HcsEnumerateComputeSystems?
-//sys hcsCreateComputeSystem(id string, configuration string, identity syscall.Handle, computeSystem *hcsSystem, result **uint16) (hr error) = vmcompute.HcsCreateComputeSystem?
-//sys hcsOpenComputeSystem(id string, computeSystem *hcsSystem, result **uint16) (hr error) = vmcompute.HcsOpenComputeSystem?
-//sys hcsCloseComputeSystem(computeSystem hcsSystem) (hr error) = vmcompute.HcsCloseComputeSystem?
-//sys hcsStartComputeSystem(computeSystem hcsSystem, options string, result **uint16) (hr error) = vmcompute.HcsStartComputeSystem?
-//sys hcsShutdownComputeSystem(computeSystem hcsSystem, options string, result **uint16) (hr error) = vmcompute.HcsShutdownComputeSystem?
-//sys hcsTerminateComputeSystem(computeSystem hcsSystem, options string, result **uint16) (hr error) = vmcompute.HcsTerminateComputeSystem?
-//sys hcsPauseComputeSystem(computeSystem hcsSystem, options string, result **uint16) (hr error) = vmcompute.HcsPauseComputeSystem?
-//sys hcsResumeComputeSystem(computeSystem hcsSystem, options string, result **uint16) (hr error) = vmcompute.HcsResumeComputeSystem?
-//sys hcsGetComputeSystemProperties(computeSystem hcsSystem, propertyQuery string, properties **uint16, result **uint16) (hr error) = vmcompute.HcsGetComputeSystemProperties?
-//sys hcsModifyComputeSystem(computeSystem hcsSystem, configuration string, result **uint16) (hr error) = vmcompute.HcsModifyComputeSystem?
-//sys hcsRegisterComputeSystemCallback(computeSystem hcsSystem, callback uintptr, context uintptr, callbackHandle *hcsCallback) (hr error) = vmcompute.HcsRegisterComputeSystemCallback?
-//sys hcsUnregisterComputeSystemCallback(callbackHandle hcsCallback) (hr error) = vmcompute.HcsUnregisterComputeSystemCallback?
-
-//sys hcsCreateProcess(computeSystem hcsSystem, processParameters string, processInformation *hcsProcessInformation, process *hcsProcess, result **uint16) (hr error) = vmcompute.HcsCreateProcess?
-//sys hcsOpenProcess(computeSystem hcsSystem, pid uint32, process *hcsProcess, result **uint16) (hr error) = vmcompute.HcsOpenProcess?
-//sys hcsCloseProcess(process hcsProcess) (hr error) = vmcompute.HcsCloseProcess?
-//sys hcsTerminateProcess(process hcsProcess, result **uint16) (hr error) = vmcompute.HcsTerminateProcess?
-//sys hcsSignalProcess(process hcsProcess, options string, result **uint16) (hr error) = vmcompute.HcsTerminateProcess?
-//sys hcsGetProcessInfo(process hcsProcess, processInformation *hcsProcessInformation, result **uint16) (hr error) = vmcompute.HcsGetProcessInfo?
-//sys hcsGetProcessProperties(process hcsProcess, processProperties **uint16, result **uint16) (hr error) = vmcompute.HcsGetProcessProperties?
-//sys hcsModifyProcess(process hcsProcess, settings string, result **uint16) (hr error) = vmcompute.HcsModifyProcess?
-//sys hcsGetServiceProperties(propertyQuery string, properties **uint16, result **uint16) (hr error) = vmcompute.HcsGetServiceProperties?
-//sys hcsRegisterProcessCallback(process hcsProcess, callback uintptr, context uintptr, callbackHandle *hcsCallback) (hr error) = vmcompute.HcsRegisterProcessCallback?
-//sys hcsUnregisterProcessCallback(callbackHandle hcsCallback) (hr error) = vmcompute.HcsUnregisterProcessCallback?
-
-type hcsSystem syscall.Handle
-type hcsProcess syscall.Handle
-type hcsCallback syscall.Handle
-
-type hcsProcessInformation struct {
-	ProcessId uint32
-	Reserved  uint32
-	StdInput  syscall.Handle
-	StdOutput syscall.Handle
-	StdError  syscall.Handle
-}

vendor/github.com/Microsoft/hcsshim/internal/hcs/log.go

@@ -1,20 +0,0 @@
-package hcs
-
-import "github.com/sirupsen/logrus"
-
-func logOperationBegin(ctx logrus.Fields, msg string) {
-	logrus.WithFields(ctx).Debug(msg)
-}
-
-func logOperationEnd(ctx logrus.Fields, msg string, err error) {
-	// Copy the log and fields first.
-	log := logrus.WithFields(ctx)
-	if err == nil {
-		log.Debug(msg)
-	} else {
-		// Edit only the copied field data to avoid race conditions on the
-		// write.
-		log.Data[logrus.ErrorKey] = err
-		log.Error(msg)
-	}
-}

vendor/github.com/Microsoft/hcsshim/internal/hcs/process.go

@@ -1,52 +1,45 @@
 package hcs
 
 import (
+	"context"
 	"encoding/json"
 	"io"
 	"sync"
 	"syscall"
 	"time"
 
-	"github.com/Microsoft/hcsshim/internal/guestrequest"
+	"github.com/Microsoft/hcsshim/internal/log"
-	"github.com/Microsoft/hcsshim/internal/interop"
+	"github.com/Microsoft/hcsshim/internal/oc"
-	"github.com/Microsoft/hcsshim/internal/logfields"
+	"github.com/Microsoft/hcsshim/internal/vmcompute"
-	"github.com/sirupsen/logrus"
+	"go.opencensus.io/trace"
 )
 
 // ContainerError is an error encountered in HCS
 type Process struct {
 	handleLock     sync.RWMutex
-	handle         hcsProcess
+	handle         vmcompute.HcsProcess
 	processID      int
 	system         *System
-	cachedPipes    *cachedPipes
+	stdin          io.WriteCloser
+	stdout         io.ReadCloser
+	stderr         io.ReadCloser
 	callbackNumber uintptr
 
-	logctx logrus.Fields
+	closedWaitOnce sync.Once
-
+	waitBlock      chan struct{}
-	waitBlock chan struct{}
+	exitCode       int
-	waitError error
+	waitError      error
 }
 
-func newProcess(process hcsProcess, processID int, computeSystem *System) *Process {
+func newProcess(process vmcompute.HcsProcess, processID int, computeSystem *System) *Process {
 	return &Process{
 		handle:    process,
 		processID: processID,
 		system:    computeSystem,
-		logctx: logrus.Fields{
-			logfields.ContainerID: computeSystem.ID(),
-			logfields.ProcessID:   processID,
-		},
 		waitBlock: make(chan struct{}),
 	}
 }
 
-type cachedPipes struct {
-	stdIn  syscall.Handle
-	stdOut syscall.Handle
-	stdErr syscall.Handle
-}
-
 type processModifyRequest struct {
 	Operation   string
 	ConsoleSize *consoleSize `json:",omitempty"`
@@ -62,7 +55,7 @@ type closeHandle struct {
 	Handle string
 }
 
-type ProcessStatus struct {
+type processStatus struct {
 	ProcessID      uint32
 	Exited         bool
 	ExitCode       uint32
@@ -90,134 +83,153 @@ func (process *Process) SystemID() string {
 	return process.system.ID()
 }
 
-func (process *Process) logOperationBegin(operation string) {
+func (process *Process) processSignalResult(ctx context.Context, err error) (bool, error) {
-	logOperationBegin(
+	switch err {
-		process.logctx,
+	case nil:
-		operation+" - Begin Operation")
+		return true, nil
-}
+	case ErrVmcomputeOperationInvalidState, ErrComputeSystemDoesNotExist, ErrElementNotFound:
-
+		select {
-func (process *Process) logOperationEnd(operation string, err error) {
+		case <-process.waitBlock:
-	var result string
+			// The process exit notification has already arrived.
-	if err == nil {
+		default:
-		result = "Success"
+			// The process should be gone, but we have not received the notification.
-	} else {
+			// After a second, force unblock the process wait to work around a possible
-		result = "Error"
+			// deadlock in the HCS.
+			go func() {
+				time.Sleep(time.Second)
+				process.closedWaitOnce.Do(func() {
+					log.G(ctx).WithError(err).Warn("force unblocking process waits")
+					process.exitCode = -1
+					process.waitError = err
+					close(process.waitBlock)
+				})
+			}()
+		}
+		return false, nil
+	default:
+		return false, err
 	}
-
-	logOperationEnd(
-		process.logctx,
-		operation+" - End Operation - "+result,
-		err)
 }
 
 // Signal signals the process with `options`.
-func (process *Process) Signal(options guestrequest.SignalProcessOptions) (err error) {
+//
+// For LCOW `guestrequest.SignalProcessOptionsLCOW`.
+//
+// For WCOW `guestrequest.SignalProcessOptionsWCOW`.
+func (process *Process) Signal(ctx context.Context, options interface{}) (bool, error) {
 	process.handleLock.RLock()
 	defer process.handleLock.RUnlock()
 
 	operation := "hcsshim::Process::Signal"
-	process.logOperationBegin(operation)
-	defer func() { process.logOperationEnd(operation, err) }()
 
 	if process.handle == 0 {
-		return makeProcessError(process, operation, ErrAlreadyClosed, nil)
+		return false, makeProcessError(process, operation, ErrAlreadyClosed, nil)
 	}
 
 	optionsb, err := json.Marshal(options)
 	if err != nil {
-		return err
+		return false, err
 	}
 
-	optionsStr := string(optionsb)
+	resultJSON, err := vmcompute.HcsSignalProcess(ctx, process.handle, string(optionsb))
-
+	events := processHcsResult(ctx, resultJSON)
-	var resultp *uint16
+	delivered, err := process.processSignalResult(ctx, err)
-	syscallWatcher(process.logctx, func() {
-		err = hcsSignalProcess(process.handle, optionsStr, &resultp)
-	})
-	events := processHcsResult(resultp)
 	if err != nil {
-		return makeProcessError(process, operation, err, events)
+		err = makeProcessError(process, operation, err, events)
 	}
-
+	return delivered, err
-	return nil
 }
 
 // Kill signals the process to terminate but does not wait for it to finish terminating.
-func (process *Process) Kill() (err error) {
+func (process *Process) Kill(ctx context.Context) (bool, error) {
 	process.handleLock.RLock()
 	defer process.handleLock.RUnlock()
 
 	operation := "hcsshim::Process::Kill"
-	process.logOperationBegin(operation)
-	defer func() { process.logOperationEnd(operation, err) }()
 
 	if process.handle == 0 {
-		return makeProcessError(process, operation, ErrAlreadyClosed, nil)
+		return false, makeProcessError(process, operation, ErrAlreadyClosed, nil)
 	}
 
-	var resultp *uint16
+	resultJSON, err := vmcompute.HcsTerminateProcess(ctx, process.handle)
-	syscallWatcher(process.logctx, func() {
+	events := processHcsResult(ctx, resultJSON)
-		err = hcsTerminateProcess(process.handle, &resultp)
+	delivered, err := process.processSignalResult(ctx, err)
-	})
-	events := processHcsResult(resultp)
 	if err != nil {
-		return makeProcessError(process, operation, err, events)
+		err = makeProcessError(process, operation, err, events)
 	}
-
+	return delivered, err
-	return nil
 }
 
 // waitBackground waits for the process exit notification. Once received sets
-// `process.waitError` (if any) and unblocks all `Wait` and `WaitTimeout` calls.
+// `process.waitError` (if any) and unblocks all `Wait` calls.
 //
-// This MUST be called exactly once per `process.handle` but `Wait` and
+// This MUST be called exactly once per `process.handle` but `Wait` is safe to
-// `WaitTimeout` are safe to call multiple times.
+// call multiple times.
 func (process *Process) waitBackground() {
-	process.waitError = waitForNotification(process.callbackNumber, hcsNotificationProcessExited, nil)
+	operation := "hcsshim::Process::waitBackground"
-	close(process.waitBlock)
+	ctx, span := trace.StartSpan(context.Background(), operation)
+	defer span.End()
+	span.AddAttributes(
+		trace.StringAttribute("cid", process.SystemID()),
+		trace.Int64Attribute("pid", int64(process.processID)))
+
+	var (
+		err      error
+		exitCode = -1
+	)
+
+	err = waitForNotification(ctx, process.callbackNumber, hcsNotificationProcessExited, nil)
+	if err != nil {
+		err = makeProcessError(process, operation, err, nil)
+		log.G(ctx).WithError(err).Error("failed wait")
+	} else {
+		process.handleLock.RLock()
+		defer process.handleLock.RUnlock()
+
+		// Make sure we didnt race with Close() here
+		if process.handle != 0 {
+			propertiesJSON, resultJSON, err := vmcompute.HcsGetProcessProperties(ctx, process.handle)
+			events := processHcsResult(ctx, resultJSON)
+			if err != nil {
+				err = makeProcessError(process, operation, err, events)
+			} else {
+				properties := &processStatus{}
+				err = json.Unmarshal([]byte(propertiesJSON), properties)
+				if err != nil {
+					err = makeProcessError(process, operation, err, nil)
+				} else {
+					if properties.LastWaitResult != 0 {
+						log.G(ctx).WithField("wait-result", properties.LastWaitResult).Warning("non-zero last wait result")
+					} else {
+						exitCode = int(properties.ExitCode)
+					}
+				}
+			}
+		}
+	}
+	log.G(ctx).WithField("exitCode", exitCode).Debug("process exited")
+
+	process.closedWaitOnce.Do(func() {
+		process.exitCode = exitCode
+		process.waitError = err
+		close(process.waitBlock)
+	})
+	oc.SetSpanStatus(span, err)
 }
 
 // Wait waits for the process to exit. If the process has already exited returns
 // the pervious error (if any).
-func (process *Process) Wait() (err error) {
+func (process *Process) Wait() error {
-	operation := "hcsshim::Process::Wait"
-	process.logOperationBegin(operation)
-	defer func() { process.logOperationEnd(operation, err) }()
-
 	<-process.waitBlock
-	if process.waitError != nil {
+	return process.waitError
-		return makeProcessError(process, operation, err, nil)
-	}
-	return nil
-}
-
-// WaitTimeout waits for the process to exit or the duration to elapse. If the
-// process has already exited returns the pervious error (if any). If a timeout
-// occurs returns `ErrTimeout`.
-func (process *Process) WaitTimeout(timeout time.Duration) (err error) {
-	operation := "hcssshim::Process::WaitTimeout"
-	process.logOperationBegin(operation)
-	defer func() { process.logOperationEnd(operation, err) }()
-
-	select {
-	case <-process.waitBlock:
-		if process.waitError != nil {
-			return makeProcessError(process, operation, process.waitError, nil)
-		}
-		return nil
-	case <-time.After(timeout):
-		return makeProcessError(process, operation, ErrTimeout, nil)
-	}
 }
 
 // ResizeConsole resizes the console of the process.
-func (process *Process) ResizeConsole(width, height uint16) (err error) {
+func (process *Process) ResizeConsole(ctx context.Context, width, height uint16) error {
 	process.handleLock.RLock()
 	defer process.handleLock.RUnlock()
 
 	operation := "hcsshim::Process::ResizeConsole"
-	process.logOperationBegin(operation)
-	defer func() { process.logOperationEnd(operation, err) }()
 
 	if process.handle == 0 {
 		return makeProcessError(process, operation, ErrAlreadyClosed, nil)
@@ -236,11 +248,8 @@ func (process *Process) ResizeConsole(width, height uint16) (err error) {
 		return err
 	}
 
-	modifyRequestStr := string(modifyRequestb)
+	resultJSON, err := vmcompute.HcsModifyProcess(ctx, process.handle, string(modifyRequestb))
-
+	events := processHcsResult(ctx, resultJSON)
-	var resultp *uint16
-	err = hcsModifyProcess(process.handle, modifyRequestStr, &resultp)
-	events := processHcsResult(resultp)
 	if err != nil {
 		return makeProcessError(process, operation, err, events)
 	}
@@ -248,109 +257,46 @@ func (process *Process) ResizeConsole(width, height uint16) (err error) {
 	return nil
 }
 
-func (process *Process) Properties() (_ *ProcessStatus, err error) {
-	process.handleLock.RLock()
-	defer process.handleLock.RUnlock()
-
-	operation := "hcsshim::Process::Properties"
-	process.logOperationBegin(operation)
-	defer func() { process.logOperationEnd(operation, err) }()
-
-	if process.handle == 0 {
-		return nil, makeProcessError(process, operation, ErrAlreadyClosed, nil)
-	}
-
-	var (
-		resultp     *uint16
-		propertiesp *uint16
-	)
-	syscallWatcher(process.logctx, func() {
-		err = hcsGetProcessProperties(process.handle, &propertiesp, &resultp)
-	})
-	events := processHcsResult(resultp)
-	if err != nil {
-		return nil, makeProcessError(process, operation, err, events)
-	}
-
-	if propertiesp == nil {
-		return nil, ErrUnexpectedValue
-	}
-	propertiesRaw := interop.ConvertAndFreeCoTaskMemBytes(propertiesp)
-
-	properties := &ProcessStatus{}
-	if err := json.Unmarshal(propertiesRaw, properties); err != nil {
-		return nil, makeProcessError(process, operation, err, nil)
-	}
-
-	return properties, nil
-}
-
 // ExitCode returns the exit code of the process. The process must have
 // already terminated.
-func (process *Process) ExitCode() (_ int, err error) {
+func (process *Process) ExitCode() (int, error) {
-	operation := "hcsshim::Process::ExitCode"
+	select {
-	process.logOperationBegin(operation)
+	case <-process.waitBlock:
-	defer func() { process.logOperationEnd(operation, err) }()
+		if process.waitError != nil {
-
+			return -1, process.waitError
-	properties, err := process.Properties()
+		}
-	if err != nil {
+		return process.exitCode, nil
-		return -1, makeProcessError(process, operation, err, nil)
+	default:
+		return -1, makeProcessError(process, "hcsshim::Process::ExitCode", ErrInvalidProcessState, nil)
 	}
-
-	if properties.Exited == false {
-		return -1, makeProcessError(process, operation, ErrInvalidProcessState, nil)
-	}
-
-	if properties.LastWaitResult != 0 {
-		logrus.WithFields(logrus.Fields{
-			logfields.ContainerID: process.SystemID(),
-			logfields.ProcessID:   process.processID,
-			"wait-result":         properties.LastWaitResult,
-		}).Warn("hcsshim::Process::ExitCode - Non-zero last wait result")
-		return -1, nil
-	}
-
-	return int(properties.ExitCode), nil
 }
 
-// Stdio returns the stdin, stdout, and stderr pipes, respectively. Closing
+// StdioLegacy returns the stdin, stdout, and stderr pipes, respectively. Closing
-// these pipes does not close the underlying pipes; it should be possible to
+// these pipes does not close the underlying pipes; but this function can only
-// call this multiple times to get multiple interfaces.
+// be called once on each Process.
-func (process *Process) Stdio() (_ io.WriteCloser, _ io.ReadCloser, _ io.ReadCloser, err error) {
+func (process *Process) StdioLegacy() (_ io.WriteCloser, _ io.ReadCloser, _ io.ReadCloser, err error) {
+	operation := "hcsshim::Process::StdioLegacy"
+	ctx, span := trace.StartSpan(context.Background(), operation)
+	defer span.End()
+	defer func() { oc.SetSpanStatus(span, err) }()
+	span.AddAttributes(
+		trace.StringAttribute("cid", process.SystemID()),
+		trace.Int64Attribute("pid", int64(process.processID)))
+
 	process.handleLock.RLock()
 	defer process.handleLock.RUnlock()
 
-	operation := "hcsshim::Process::Stdio"
-	process.logOperationBegin(operation)
-	defer func() { process.logOperationEnd(operation, err) }()
-
 	if process.handle == 0 {
 		return nil, nil, nil, makeProcessError(process, operation, ErrAlreadyClosed, nil)
 	}
 
-	var stdIn, stdOut, stdErr syscall.Handle
+	processInfo, resultJSON, err := vmcompute.HcsGetProcessInfo(ctx, process.handle)
-
+	events := processHcsResult(ctx, resultJSON)
-	if process.cachedPipes == nil {
+	if err != nil {
-		var (
+		return nil, nil, nil, makeProcessError(process, operation, err, events)
-			processInfo hcsProcessInformation
-			resultp     *uint16
-		)
-		err = hcsGetProcessInfo(process.handle, &processInfo, &resultp)
-		events := processHcsResult(resultp)
-		if err != nil {
-			return nil, nil, nil, makeProcessError(process, operation, err, events)
-		}
-
-		stdIn, stdOut, stdErr = processInfo.StdInput, processInfo.StdOutput, processInfo.StdError
-	} else {
-		// Use cached pipes
-		stdIn, stdOut, stdErr = process.cachedPipes.stdIn, process.cachedPipes.stdOut, process.cachedPipes.stdErr
-
-		// Invalidate the cache
-		process.cachedPipes = nil
 	}
 
-	pipes, err := makeOpenFiles([]syscall.Handle{stdIn, stdOut, stdErr})
+	pipes, err := makeOpenFiles([]syscall.Handle{processInfo.StdInput, processInfo.StdOutput, processInfo.StdError})
 	if err != nil {
 		return nil, nil, nil, makeProcessError(process, operation, err, nil)
 	}
@@ -358,15 +304,19 @@ func (process *Process) Stdio() (_ io.WriteCloser, _ io.ReadCloser, _ io.ReadClo
 	return pipes[0], pipes[1], pipes[2], nil
 }
 
+// Stdio returns the stdin, stdout, and stderr pipes, respectively.
+// To close them, close the process handle.
+func (process *Process) Stdio() (stdin io.Writer, stdout, stderr io.Reader) {
+	return process.stdin, process.stdout, process.stderr
+}
+
 // CloseStdin closes the write side of the stdin pipe so that the process is
 // notified on the read side that there is no more data in stdin.
-func (process *Process) CloseStdin() (err error) {
+func (process *Process) CloseStdin(ctx context.Context) error {
 	process.handleLock.RLock()
 	defer process.handleLock.RUnlock()
 
 	operation := "hcsshim::Process::CloseStdin"
-	process.logOperationBegin(operation)
-	defer func() { process.logOperationEnd(operation, err) }()
 
 	if process.handle == 0 {
 		return makeProcessError(process, operation, ErrAlreadyClosed, nil)
@@ -384,93 +334,113 @@ func (process *Process) CloseStdin() (err error) {
 		return err
 	}
 
-	modifyRequestStr := string(modifyRequestb)
+	resultJSON, err := vmcompute.HcsModifyProcess(ctx, process.handle, string(modifyRequestb))
-
+	events := processHcsResult(ctx, resultJSON)
-	var resultp *uint16
-	err = hcsModifyProcess(process.handle, modifyRequestStr, &resultp)
-	events := processHcsResult(resultp)
 	if err != nil {
 		return makeProcessError(process, operation, err, events)
 	}
 
+	if process.stdin != nil {
+		process.stdin.Close()
+	}
 	return nil
 }
 
 // Close cleans up any state associated with the process but does not kill
 // or wait on it.
 func (process *Process) Close() (err error) {
+	operation := "hcsshim::Process::Close"
+	ctx, span := trace.StartSpan(context.Background(), operation)
+	defer span.End()
+	defer func() { oc.SetSpanStatus(span, err) }()
+	span.AddAttributes(
+		trace.StringAttribute("cid", process.SystemID()),
+		trace.Int64Attribute("pid", int64(process.processID)))
+
 	process.handleLock.Lock()
 	defer process.handleLock.Unlock()
 
-	operation := "hcsshim::Process::Close"
-	process.logOperationBegin(operation)
-	defer func() { process.logOperationEnd(operation, err) }()
-
 	// Don't double free this
 	if process.handle == 0 {
 		return nil
 	}
 
-	if err = process.unregisterCallback(); err != nil {
+	if process.stdin != nil {
+		process.stdin.Close()
+	}
+	if process.stdout != nil {
+		process.stdout.Close()
+	}
+	if process.stderr != nil {
+		process.stderr.Close()
+	}
+
+	if err = process.unregisterCallback(ctx); err != nil {
 		return makeProcessError(process, operation, err, nil)
 	}
 
-	if err = hcsCloseProcess(process.handle); err != nil {
+	if err = vmcompute.HcsCloseProcess(ctx, process.handle); err != nil {
 		return makeProcessError(process, operation, err, nil)
 	}
 
 	process.handle = 0
+	process.closedWaitOnce.Do(func() {
+		process.exitCode = -1
+		process.waitError = ErrAlreadyClosed
+		close(process.waitBlock)
+	})
 
 	return nil
 }
 
-func (process *Process) registerCallback() error {
+func (process *Process) registerCallback(ctx context.Context) error {
-	context := &notifcationWatcherContext{
+	callbackContext := &notifcationWatcherContext{
-		channels: newChannels(),
+		channels:  newProcessChannels(),
+		systemID:  process.SystemID(),
+		processID: process.processID,
 	}
 
 	callbackMapLock.Lock()
 	callbackNumber := nextCallback
 	nextCallback++
-	callbackMap[callbackNumber] = context
+	callbackMap[callbackNumber] = callbackContext
 	callbackMapLock.Unlock()
 
-	var callbackHandle hcsCallback
+	callbackHandle, err := vmcompute.HcsRegisterProcessCallback(ctx, process.handle, notificationWatcherCallback, callbackNumber)
-	err := hcsRegisterProcessCallback(process.handle, notificationWatcherCallback, callbackNumber, &callbackHandle)
 	if err != nil {
 		return err
 	}
-	context.handle = callbackHandle
+	callbackContext.handle = callbackHandle
 	process.callbackNumber = callbackNumber
 
 	return nil
 }
 
-func (process *Process) unregisterCallback() error {
+func (process *Process) unregisterCallback(ctx context.Context) error {
 	callbackNumber := process.callbackNumber
 
 	callbackMapLock.RLock()
-	context := callbackMap[callbackNumber]
+	callbackContext := callbackMap[callbackNumber]
 	callbackMapLock.RUnlock()
 
-	if context == nil {
+	if callbackContext == nil {
 		return nil
 	}
 
-	handle := context.handle
+	handle := callbackContext.handle
 
 	if handle == 0 {
 		return nil
 	}
 
-	// hcsUnregisterProcessCallback has its own syncronization
+	// vmcompute.HcsUnregisterProcessCallback has its own synchronization to
-	// to wait for all callbacks to complete. We must NOT hold the callbackMapLock.
+	// wait for all callbacks to complete. We must NOT hold the callbackMapLock.
-	err := hcsUnregisterProcessCallback(handle)
+	err := vmcompute.HcsUnregisterProcessCallback(ctx, handle)
 	if err != nil {
 		return err
 	}
 
-	closeChannels(context.channels)
+	closeChannels(callbackContext.channels)
 
 	callbackMapLock.Lock()
 	delete(callbackMap, callbackNumber)

vendor/github.com/Microsoft/hcsshim/internal/hcs/system.go

@@ -1,18 +1,23 @@
 package hcs
 
 import (
+	"context"
 	"encoding/json"
+	"errors"
 	"os"
 	"strconv"
+	"strings"
 	"sync"
 	"syscall"
 	"time"
 
-	"github.com/Microsoft/hcsshim/internal/interop"
+	"github.com/Microsoft/hcsshim/internal/cow"
-	"github.com/Microsoft/hcsshim/internal/logfields"
+	"github.com/Microsoft/hcsshim/internal/log"
+	"github.com/Microsoft/hcsshim/internal/oc"
 	"github.com/Microsoft/hcsshim/internal/schema1"
 	"github.com/Microsoft/hcsshim/internal/timeout"
-	"github.com/sirupsen/logrus"
+	"github.com/Microsoft/hcsshim/internal/vmcompute"
+	"go.opencensus.io/trace"
 )
 
 // currentContainerStarts is used to limit the number of concurrent container
@@ -38,53 +43,37 @@ func init() {
 
 type System struct {
 	handleLock     sync.RWMutex
-	handle         hcsSystem
+	handle         vmcompute.HcsSystem
 	id             string
 	callbackNumber uintptr
 
-	logctx logrus.Fields
+	closedWaitOnce sync.Once
+	waitBlock      chan struct{}
+	waitError      error
+	exitError      error
 
-	waitBlock chan struct{}
+	os, typ string
-	waitError error
 }
 
 func newSystem(id string) *System {
 	return &System{
-		id: id,
+		id:        id,
-		logctx: logrus.Fields{
-			logfields.ContainerID: id,
-		},
 		waitBlock: make(chan struct{}),
 	}
 }
 
-func (computeSystem *System) logOperationBegin(operation string) {
-	logOperationBegin(
-		computeSystem.logctx,
-		operation+" - Begin Operation")
-}
-
-func (computeSystem *System) logOperationEnd(operation string, err error) {
-	var result string
-	if err == nil {
-		result = "Success"
-	} else {
-		result = "Error"
-	}
-
-	logOperationEnd(
-		computeSystem.logctx,
-		operation+" - End Operation - "+result,
-		err)
-}
-
 // CreateComputeSystem creates a new compute system with the given configuration but does not start it.
-func CreateComputeSystem(id string, hcsDocumentInterface interface{}) (_ *System, err error) {
+func CreateComputeSystem(ctx context.Context, id string, hcsDocumentInterface interface{}) (_ *System, err error) {
 	operation := "hcsshim::CreateComputeSystem"
 
+	// hcsCreateComputeSystemContext is an async operation. Start the outer span
+	// here to measure the full create time.
+	ctx, span := trace.StartSpan(ctx, operation)
+	defer span.End()
+	defer func() { oc.SetSpanStatus(span, err) }()
+	span.AddAttributes(trace.StringAttribute("cid", id))
+
 	computeSystem := newSystem(id)
-	computeSystem.logOperationBegin(operation)
-	defer func() { computeSystem.logOperationEnd(operation, err) }()
 
 	hcsDocumentB, err := json.Marshal(hcsDocumentInterface)
 	if err != nil {
@@ -93,129 +82,114 @@ func CreateComputeSystem(id string, hcsDocumentInterface interface{}) (_ *System
 
 	hcsDocument := string(hcsDocumentB)
 
-	logrus.WithFields(computeSystem.logctx).
-		WithField(logfields.JSON, hcsDocument).
-		Debug("HCS ComputeSystem Document")
-
 	var (
-		resultp     *uint16
 		identity    syscall.Handle
+		resultJSON  string
 		createError error
 	)
-	syscallWatcher(computeSystem.logctx, func() {
+	computeSystem.handle, resultJSON, createError = vmcompute.HcsCreateComputeSystem(ctx, id, hcsDocument, identity)
-		createError = hcsCreateComputeSystem(id, hcsDocument, identity, &computeSystem.handle, &resultp)
-	})
-
 	if createError == nil || IsPending(createError) {
-		if err = computeSystem.registerCallback(); err != nil {
+		defer func() {
+			if err != nil {
+				computeSystem.Close()
+			}
+		}()
+		if err = computeSystem.registerCallback(ctx); err != nil {
 			// Terminate the compute system if it still exists. We're okay to
 			// ignore a failure here.
-			computeSystem.Terminate()
+			computeSystem.Terminate(ctx)
 			return nil, makeSystemError(computeSystem, operation, "", err, nil)
 		}
 	}
 
-	events, err := processAsyncHcsResult(createError, resultp, computeSystem.callbackNumber, hcsNotificationSystemCreateCompleted, &timeout.SystemCreate)
+	events, err := processAsyncHcsResult(ctx, createError, resultJSON, computeSystem.callbackNumber, hcsNotificationSystemCreateCompleted, &timeout.SystemCreate)
 	if err != nil {
 		if err == ErrTimeout {
 			// Terminate the compute system if it still exists. We're okay to
 			// ignore a failure here.
-			computeSystem.Terminate()
+			computeSystem.Terminate(ctx)
 		}
 		return nil, makeSystemError(computeSystem, operation, hcsDocument, err, events)
 	}
-
 	go computeSystem.waitBackground()
-
+	if err = computeSystem.getCachedProperties(ctx); err != nil {
+		return nil, err
+	}
 	return computeSystem, nil
 }
 
 // OpenComputeSystem opens an existing compute system by ID.
-func OpenComputeSystem(id string) (_ *System, err error) {
+func OpenComputeSystem(ctx context.Context, id string) (*System, error) {
 	operation := "hcsshim::OpenComputeSystem"
 
 	computeSystem := newSystem(id)
-	computeSystem.logOperationBegin(operation)
+	handle, resultJSON, err := vmcompute.HcsOpenComputeSystem(ctx, id)
-	defer func() {
+	events := processHcsResult(ctx, resultJSON)
-		if IsNotExist(err) {
-			computeSystem.logOperationEnd(operation, nil)
-		} else {
-			computeSystem.logOperationEnd(operation, err)
-		}
-	}()
-
-	var (
-		handle  hcsSystem
-		resultp *uint16
-	)
-	err = hcsOpenComputeSystem(id, &handle, &resultp)
-	events := processHcsResult(resultp)
 	if err != nil {
 		return nil, makeSystemError(computeSystem, operation, "", err, events)
 	}
-
 	computeSystem.handle = handle
-
+	defer func() {
-	if err = computeSystem.registerCallback(); err != nil {
+		if err != nil {
+			computeSystem.Close()
+		}
+	}()
+	if err = computeSystem.registerCallback(ctx); err != nil {
 		return nil, makeSystemError(computeSystem, operation, "", err, nil)
 	}
 	go computeSystem.waitBackground()
-
+	if err = computeSystem.getCachedProperties(ctx); err != nil {
+		return nil, err
+	}
 	return computeSystem, nil
 }
 
+func (computeSystem *System) getCachedProperties(ctx context.Context) error {
+	props, err := computeSystem.Properties(ctx)
+	if err != nil {
+		return err
+	}
+	computeSystem.typ = strings.ToLower(props.SystemType)
+	computeSystem.os = strings.ToLower(props.RuntimeOSType)
+	if computeSystem.os == "" && computeSystem.typ == "container" {
+		// Pre-RS5 HCS did not return the OS, but it only supported containers
+		// that ran Windows.
+		computeSystem.os = "windows"
+	}
+	return nil
+}
+
+// OS returns the operating system of the compute system, "linux" or "windows".
+func (computeSystem *System) OS() string {
+	return computeSystem.os
+}
+
+// IsOCI returns whether processes in the compute system should be created via
+// OCI.
+func (computeSystem *System) IsOCI() bool {
+	return computeSystem.os == "linux" && computeSystem.typ == "container"
+}
+
 // GetComputeSystems gets a list of the compute systems on the system that match the query
-func GetComputeSystems(q schema1.ComputeSystemQuery) (_ []schema1.ContainerProperties, err error) {
+func GetComputeSystems(ctx context.Context, q schema1.ComputeSystemQuery) ([]schema1.ContainerProperties, error) {
 	operation := "hcsshim::GetComputeSystems"
-	fields := logrus.Fields{}
-	logOperationBegin(
-		fields,
-		operation+" - Begin Operation")
-
-	defer func() {
-		var result string
-		if err == nil {
-			result = "Success"
-		} else {
-			result = "Error"
-		}
-
-		logOperationEnd(
-			fields,
-			operation+" - End Operation - "+result,
-			err)
-	}()
 
 	queryb, err := json.Marshal(q)
 	if err != nil {
 		return nil, err
 	}
 
-	query := string(queryb)
+	computeSystemsJSON, resultJSON, err := vmcompute.HcsEnumerateComputeSystems(ctx, string(queryb))
-
+	events := processHcsResult(ctx, resultJSON)
-	logrus.WithFields(fields).
-		WithField(logfields.JSON, query).
-		Debug("HCS ComputeSystem Query")
-
-	var (
-		resultp         *uint16
-		computeSystemsp *uint16
-	)
-
-	syscallWatcher(fields, func() {
-		err = hcsEnumerateComputeSystems(query, &computeSystemsp, &resultp)
-	})
-	events := processHcsResult(resultp)
 	if err != nil {
 		return nil, &HcsError{Op: operation, Err: err, Events: events}
 	}
 
-	if computeSystemsp == nil {
+	if computeSystemsJSON == "" {
 		return nil, ErrUnexpectedValue
 	}
-	computeSystemsRaw := interop.ConvertAndFreeCoTaskMemBytes(computeSystemsp)
 	computeSystems := []schema1.ContainerProperties{}
-	if err = json.Unmarshal(computeSystemsRaw, &computeSystems); err != nil {
+	if err = json.Unmarshal([]byte(computeSystemsJSON), &computeSystems); err != nil {
 		return nil, err
 	}
 
@@ -223,16 +197,21 @@ func GetComputeSystems(q schema1.ComputeSystemQuery) (_ []schema1.ContainerPrope
 }
 
 // Start synchronously starts the computeSystem.
-func (computeSystem *System) Start() (err error) {
+func (computeSystem *System) Start(ctx context.Context) (err error) {
+	operation := "hcsshim::System::Start"
+
+	// hcsStartComputeSystemContext is an async operation. Start the outer span
+	// here to measure the full start time.
+	ctx, span := trace.StartSpan(ctx, operation)
+	defer span.End()
+	defer func() { oc.SetSpanStatus(span, err) }()
+	span.AddAttributes(trace.StringAttribute("cid", computeSystem.id))
+
 	computeSystem.handleLock.RLock()
 	defer computeSystem.handleLock.RUnlock()
 
-	operation := "hcsshim::ComputeSystem::Start"
-	computeSystem.logOperationBegin(operation)
-	defer func() { computeSystem.logOperationEnd(operation, err) }()
-
 	if computeSystem.handle == 0 {
-		return makeSystemError(computeSystem, "Start", "", ErrAlreadyClosed, nil)
+		return makeSystemError(computeSystem, operation, "", ErrAlreadyClosed, nil)
 	}
 
 	// This is a very simple backoff-retry loop to limit the number
@@ -261,13 +240,10 @@ func (computeSystem *System) Start() (err error) {
 		}()
 	}
 
-	var resultp *uint16
+	resultJSON, err := vmcompute.HcsStartComputeSystem(ctx, computeSystem.handle, "")
-	syscallWatcher(computeSystem.logctx, func() {
+	events, err := processAsyncHcsResult(ctx, err, resultJSON, computeSystem.callbackNumber, hcsNotificationSystemStartCompleted, &timeout.SystemStart)
-		err = hcsStartComputeSystem(computeSystem.handle, "", &resultp)
-	})
-	events, err := processAsyncHcsResult(err, resultp, computeSystem.callbackNumber, hcsNotificationSystemStartCompleted, &timeout.SystemStart)
 	if err != nil {
-		return makeSystemError(computeSystem, "Start", "", err, events)
+		return makeSystemError(computeSystem, operation, "", err, events)
 	}
 
 	return nil
@@ -278,270 +254,258 @@ func (computeSystem *System) ID() string {
 	return computeSystem.id
 }
 
-// Shutdown requests a compute system shutdown, if IsPending() on the error returned is true,
+// Shutdown requests a compute system shutdown.
-// it may not actually be shut down until Wait() succeeds.
+func (computeSystem *System) Shutdown(ctx context.Context) error {
-func (computeSystem *System) Shutdown() (err error) {
 	computeSystem.handleLock.RLock()
 	defer computeSystem.handleLock.RUnlock()
 
-	operation := "hcsshim::ComputeSystem::Shutdown"
+	operation := "hcsshim::System::Shutdown"
-	computeSystem.logOperationBegin(operation)
-	defer func() {
-		if IsAlreadyStopped(err) || IsPending(err) {
-			computeSystem.logOperationEnd(operation, nil)
-		} else {
-			computeSystem.logOperationEnd(operation, err)
-		}
-	}()
 
 	if computeSystem.handle == 0 {
-		return makeSystemError(computeSystem, "Shutdown", "", ErrAlreadyClosed, nil)
+		return nil
 	}
 
-	var resultp *uint16
+	resultJSON, err := vmcompute.HcsShutdownComputeSystem(ctx, computeSystem.handle, "")
-	syscallWatcher(computeSystem.logctx, func() {
+	events := processHcsResult(ctx, resultJSON)
-		err = hcsShutdownComputeSystem(computeSystem.handle, "", &resultp)
+	switch err {
-	})
+	case nil, ErrVmcomputeAlreadyStopped, ErrComputeSystemDoesNotExist, ErrVmcomputeOperationPending:
-	events := processHcsResult(resultp)
+	default:
-	if err != nil {
+		return makeSystemError(computeSystem, operation, "", err, events)
-		return makeSystemError(computeSystem, "Shutdown", "", err, events)
 	}
-
 	return nil
 }
 
-// Terminate requests a compute system terminate, if IsPending() on the error returned is true,
+// Terminate requests a compute system terminate.
-// it may not actually be shut down until Wait() succeeds.
+func (computeSystem *System) Terminate(ctx context.Context) error {
-func (computeSystem *System) Terminate() (err error) {
 	computeSystem.handleLock.RLock()
 	defer computeSystem.handleLock.RUnlock()
 
-	operation := "hcsshim::ComputeSystem::Terminate"
+	operation := "hcsshim::System::Terminate"
-	computeSystem.logOperationBegin(operation)
-	defer func() {
-		if IsPending(err) {
-			computeSystem.logOperationEnd(operation, nil)
-		} else {
-			computeSystem.logOperationEnd(operation, err)
-		}
-	}()
 
 	if computeSystem.handle == 0 {
-		return makeSystemError(computeSystem, "Terminate", "", ErrAlreadyClosed, nil)
+		return nil
 	}
 
-	var resultp *uint16
+	resultJSON, err := vmcompute.HcsTerminateComputeSystem(ctx, computeSystem.handle, "")
-	syscallWatcher(computeSystem.logctx, func() {
+	events := processHcsResult(ctx, resultJSON)
-		err = hcsTerminateComputeSystem(computeSystem.handle, "", &resultp)
+	switch err {
-	})
+	case nil, ErrVmcomputeAlreadyStopped, ErrComputeSystemDoesNotExist, ErrVmcomputeOperationPending:
-	events := processHcsResult(resultp)
+	default:
-	if err != nil && err != ErrVmcomputeAlreadyStopped {
+		return makeSystemError(computeSystem, operation, "", err, events)
-		return makeSystemError(computeSystem, "Terminate", "", err, events)
 	}
-
 	return nil
 }
 
 // waitBackground waits for the compute system exit notification. Once received
-// sets `computeSystem.waitError` (if any) and unblocks all `Wait`,
+// sets `computeSystem.waitError` (if any) and unblocks all `Wait` calls.
-// `WaitExpectedError`, and `WaitTimeout` calls.
 //
-// This MUST be called exactly once per `computeSystem.handle` but `Wait`,
+// This MUST be called exactly once per `computeSystem.handle` but `Wait` is
-// `WaitExpectedError`, and `WaitTimeout` are safe to call multiple times.
+// safe to call multiple times.
 func (computeSystem *System) waitBackground() {
-	computeSystem.waitError = waitForNotification(computeSystem.callbackNumber, hcsNotificationSystemExited, nil)
+	operation := "hcsshim::System::waitBackground"
-	close(computeSystem.waitBlock)
+	ctx, span := trace.StartSpan(context.Background(), operation)
+	defer span.End()
+	span.AddAttributes(trace.StringAttribute("cid", computeSystem.id))
+
+	err := waitForNotification(ctx, computeSystem.callbackNumber, hcsNotificationSystemExited, nil)
+	switch err {
+	case nil:
+		log.G(ctx).Debug("system exited")
+	case ErrVmcomputeUnexpectedExit:
+		log.G(ctx).Debug("unexpected system exit")
+		computeSystem.exitError = makeSystemError(computeSystem, operation, "", err, nil)
+		err = nil
+	default:
+		err = makeSystemError(computeSystem, operation, "", err, nil)
+	}
+	computeSystem.closedWaitOnce.Do(func() {
+		computeSystem.waitError = err
+		close(computeSystem.waitBlock)
+	})
+	oc.SetSpanStatus(span, err)
 }
 
 // Wait synchronously waits for the compute system to shutdown or terminate. If
 // the compute system has already exited returns the previous error (if any).
-func (computeSystem *System) Wait() (err error) {
+func (computeSystem *System) Wait() error {
-	operation := "hcsshim::ComputeSystem::Wait"
-	computeSystem.logOperationBegin(operation)
-	defer func() { computeSystem.logOperationEnd(operation, err) }()
-
 	<-computeSystem.waitBlock
-	if computeSystem.waitError != nil {
+	return computeSystem.waitError
-		return makeSystemError(computeSystem, "Wait", "", computeSystem.waitError, nil)
-	}
-
-	return nil
 }
 
-// WaitExpectedError synchronously waits for the compute system to shutdown or
+// ExitError returns an error describing the reason the compute system terminated.
-// terminate and returns the error (if any) as long as it does not match
+func (computeSystem *System) ExitError() error {
-// `expected`. If the compute system has already exited returns the previous
-// error (if any) as long as it does not match `expected`.
-func (computeSystem *System) WaitExpectedError(expected error) (err error) {
-	operation := "hcsshim::ComputeSystem::WaitExpectedError"
-	computeSystem.logOperationBegin(operation)
-	defer func() { computeSystem.logOperationEnd(operation, err) }()
-
-	<-computeSystem.waitBlock
-	if computeSystem.waitError != nil && getInnerError(computeSystem.waitError) != expected {
-		return makeSystemError(computeSystem, "WaitExpectedError", "", computeSystem.waitError, nil)
-	}
-	return nil
-}
-
-// WaitTimeout synchronously waits for the compute system to terminate or the
-// duration to elapse. If the timeout expires, `IsTimeout(err) == true`. If
-// the compute system has already exited returns the previous error (if any).
-func (computeSystem *System) WaitTimeout(timeout time.Duration) (err error) {
-	operation := "hcsshim::ComputeSystem::WaitTimeout"
-	computeSystem.logOperationBegin(operation)
-	defer func() { computeSystem.logOperationEnd(operation, err) }()
-
 	select {
 	case <-computeSystem.waitBlock:
 		if computeSystem.waitError != nil {
-			return makeSystemError(computeSystem, "WaitTimeout", "", computeSystem.waitError, nil)
+			return computeSystem.waitError
 		}
-		return nil
+		return computeSystem.exitError
-	case <-time.After(timeout):
+	default:
-		return makeSystemError(computeSystem, "WaitTimeout", "", ErrTimeout, nil)
+		return errors.New("container not exited")
 	}
 }
 
-func (computeSystem *System) Properties(types ...schema1.PropertyType) (_ *schema1.ContainerProperties, err error) {
+func (computeSystem *System) Properties(ctx context.Context, types ...schema1.PropertyType) (*schema1.ContainerProperties, error) {
 	computeSystem.handleLock.RLock()
 	defer computeSystem.handleLock.RUnlock()
 
-	operation := "hcsshim::ComputeSystem::Properties"
+	operation := "hcsshim::System::Properties"
-	computeSystem.logOperationBegin(operation)
-	defer func() { computeSystem.logOperationEnd(operation, err) }()
 
-	queryj, err := json.Marshal(schema1.PropertyQuery{types})
+	queryBytes, err := json.Marshal(schema1.PropertyQuery{PropertyTypes: types})
 	if err != nil {
-		return nil, makeSystemError(computeSystem, "Properties", "", err, nil)
+		return nil, makeSystemError(computeSystem, operation, "", err, nil)
 	}
 
-	logrus.WithFields(computeSystem.logctx).
+	propertiesJSON, resultJSON, err := vmcompute.HcsGetComputeSystemProperties(ctx, computeSystem.handle, string(queryBytes))
-		WithField(logfields.JSON, queryj).
+	events := processHcsResult(ctx, resultJSON)
-		Debug("HCS ComputeSystem Properties Query")
-
-	var resultp, propertiesp *uint16
-	syscallWatcher(computeSystem.logctx, func() {
-		err = hcsGetComputeSystemProperties(computeSystem.handle, string(queryj), &propertiesp, &resultp)
-	})
-	events := processHcsResult(resultp)
 	if err != nil {
-		return nil, makeSystemError(computeSystem, "Properties", "", err, events)
+		return nil, makeSystemError(computeSystem, operation, "", err, events)
 	}
 
-	if propertiesp == nil {
+	if propertiesJSON == "" {
 		return nil, ErrUnexpectedValue
 	}
-	propertiesRaw := interop.ConvertAndFreeCoTaskMemBytes(propertiesp)
 	properties := &schema1.ContainerProperties{}
-	if err := json.Unmarshal(propertiesRaw, properties); err != nil {
+	if err := json.Unmarshal([]byte(propertiesJSON), properties); err != nil {
-		return nil, makeSystemError(computeSystem, "Properties", "", err, nil)
+		return nil, makeSystemError(computeSystem, operation, "", err, nil)
 	}
 
 	return properties, nil
 }
 
 // Pause pauses the execution of the computeSystem. This feature is not enabled in TP5.
-func (computeSystem *System) Pause() (err error) {
+func (computeSystem *System) Pause(ctx context.Context) (err error) {
+	operation := "hcsshim::System::Pause"
+
+	// hcsPauseComputeSystemContext is an async peration. Start the outer span
+	// here to measure the full pause time.
+	ctx, span := trace.StartSpan(ctx, operation)
+	defer span.End()
+	defer func() { oc.SetSpanStatus(span, err) }()
+	span.AddAttributes(trace.StringAttribute("cid", computeSystem.id))
+
 	computeSystem.handleLock.RLock()
 	defer computeSystem.handleLock.RUnlock()
 
-	operation := "hcsshim::ComputeSystem::Pause"
-	computeSystem.logOperationBegin(operation)
-	defer func() { computeSystem.logOperationEnd(operation, err) }()
-
 	if computeSystem.handle == 0 {
-		return makeSystemError(computeSystem, "Pause", "", ErrAlreadyClosed, nil)
+		return makeSystemError(computeSystem, operation, "", ErrAlreadyClosed, nil)
 	}
 
-	var resultp *uint16
+	resultJSON, err := vmcompute.HcsPauseComputeSystem(ctx, computeSystem.handle, "")
-	syscallWatcher(computeSystem.logctx, func() {
+	events, err := processAsyncHcsResult(ctx, err, resultJSON, computeSystem.callbackNumber, hcsNotificationSystemPauseCompleted, &timeout.SystemPause)
-		err = hcsPauseComputeSystem(computeSystem.handle, "", &resultp)
-	})
-	events, err := processAsyncHcsResult(err, resultp, computeSystem.callbackNumber, hcsNotificationSystemPauseCompleted, &timeout.SystemPause)
 	if err != nil {
-		return makeSystemError(computeSystem, "Pause", "", err, events)
+		return makeSystemError(computeSystem, operation, "", err, events)
 	}
 
 	return nil
 }
 
 // Resume resumes the execution of the computeSystem. This feature is not enabled in TP5.
-func (computeSystem *System) Resume() (err error) {
+func (computeSystem *System) Resume(ctx context.Context) (err error) {
+	operation := "hcsshim::System::Resume"
+
+	// hcsResumeComputeSystemContext is an async operation. Start the outer span
+	// here to measure the full restore time.
+	ctx, span := trace.StartSpan(ctx, operation)
+	defer span.End()
+	defer func() { oc.SetSpanStatus(span, err) }()
+	span.AddAttributes(trace.StringAttribute("cid", computeSystem.id))
+
 	computeSystem.handleLock.RLock()
 	defer computeSystem.handleLock.RUnlock()
 
-	operation := "hcsshim::ComputeSystem::Resume"
-	computeSystem.logOperationBegin(operation)
-	defer func() { computeSystem.logOperationEnd(operation, err) }()
-
 	if computeSystem.handle == 0 {
-		return makeSystemError(computeSystem, "Resume", "", ErrAlreadyClosed, nil)
+		return makeSystemError(computeSystem, operation, "", ErrAlreadyClosed, nil)
 	}
 
-	var resultp *uint16
+	resultJSON, err := vmcompute.HcsResumeComputeSystem(ctx, computeSystem.handle, "")
-	syscallWatcher(computeSystem.logctx, func() {
+	events, err := processAsyncHcsResult(ctx, err, resultJSON, computeSystem.callbackNumber, hcsNotificationSystemResumeCompleted, &timeout.SystemResume)
-		err = hcsResumeComputeSystem(computeSystem.handle, "", &resultp)
-	})
-	events, err := processAsyncHcsResult(err, resultp, computeSystem.callbackNumber, hcsNotificationSystemResumeCompleted, &timeout.SystemResume)
 	if err != nil {
-		return makeSystemError(computeSystem, "Resume", "", err, events)
+		return makeSystemError(computeSystem, operation, "", err, events)
 	}
 
 	return nil
 }
 
-// CreateProcess launches a new process within the computeSystem.
+func (computeSystem *System) createProcess(ctx context.Context, operation string, c interface{}) (*Process, *vmcompute.HcsProcessInformation, error) {
-func (computeSystem *System) CreateProcess(c interface{}) (_ *Process, err error) {
 	computeSystem.handleLock.RLock()
 	defer computeSystem.handleLock.RUnlock()
 
-	operation := "hcsshim::ComputeSystem::CreateProcess"
-	computeSystem.logOperationBegin(operation)
-	defer func() { computeSystem.logOperationEnd(operation, err) }()
-
-	var (
-		processInfo   hcsProcessInformation
-		processHandle hcsProcess
-		resultp       *uint16
-	)
-
 	if computeSystem.handle == 0 {
-		return nil, makeSystemError(computeSystem, "CreateProcess", "", ErrAlreadyClosed, nil)
+		return nil, nil, makeSystemError(computeSystem, operation, "", ErrAlreadyClosed, nil)
 	}
 
 	configurationb, err := json.Marshal(c)
 	if err != nil {
-		return nil, makeSystemError(computeSystem, "CreateProcess", "", err, nil)
+		return nil, nil, makeSystemError(computeSystem, operation, "", err, nil)
 	}
 
 	configuration := string(configurationb)
-
+	processInfo, processHandle, resultJSON, err := vmcompute.HcsCreateProcess(ctx, computeSystem.handle, configuration)
-	logrus.WithFields(computeSystem.logctx).
+	events := processHcsResult(ctx, resultJSON)
-		WithField(logfields.JSON, configuration).
-		Debug("HCS ComputeSystem Process Document")
-
-	syscallWatcher(computeSystem.logctx, func() {
-		err = hcsCreateProcess(computeSystem.handle, configuration, &processInfo, &processHandle, &resultp)
-	})
-	events := processHcsResult(resultp)
 	if err != nil {
-		return nil, makeSystemError(computeSystem, "CreateProcess", configuration, err, events)
+		return nil, nil, makeSystemError(computeSystem, operation, configuration, err, events)
 	}
 
-	logrus.WithFields(computeSystem.logctx).
+	log.G(ctx).WithField("pid", processInfo.ProcessId).Debug("created process pid")
-		WithField(logfields.ProcessID, processInfo.ProcessId).
+	return newProcess(processHandle, int(processInfo.ProcessId), computeSystem), &processInfo, nil
-		Debug("HCS ComputeSystem CreateProcess PID")
+}
 
-	process := newProcess(processHandle, int(processInfo.ProcessId), computeSystem)
+// CreateProcessNoStdio launches a new process within the computeSystem. The
-	process.cachedPipes = &cachedPipes{
+// Stdio handles are not cached on the process struct.
-		stdIn:  processInfo.StdInput,
+func (computeSystem *System) CreateProcessNoStdio(c interface{}) (_ cow.Process, err error) {
-		stdOut: processInfo.StdOutput,
+	operation := "hcsshim::System::CreateProcessNoStdio"
-		stdErr: processInfo.StdError,
+	ctx, span := trace.StartSpan(context.Background(), operation)
+	defer span.End()
+	defer func() { oc.SetSpanStatus(span, err) }()
+	span.AddAttributes(trace.StringAttribute("cid", computeSystem.id))
+
+	process, processInfo, err := computeSystem.createProcess(ctx, operation, c)
+	if err != nil {
+		return nil, err
 	}
+	defer func() {
+		if err != nil {
+			process.Close()
+		}
+	}()
 
-	if err = process.registerCallback(); err != nil {
+	// We don't do anything with these handles. Close them so they don't leak.
-		return nil, makeSystemError(computeSystem, "CreateProcess", "", err, nil)
+	syscall.Close(processInfo.StdInput)
+	syscall.Close(processInfo.StdOutput)
+	syscall.Close(processInfo.StdError)
+
+	if err = process.registerCallback(ctx); err != nil {
+		return nil, makeSystemError(computeSystem, operation, "", err, nil)
+	}
+	go process.waitBackground()
+
+	return process, nil
+}
+
+// CreateProcess launches a new process within the computeSystem.
+func (computeSystem *System) CreateProcess(ctx context.Context, c interface{}) (cow.Process, error) {
+	operation := "hcsshim::System::CreateProcess"
+	process, processInfo, err := computeSystem.createProcess(ctx, operation, c)
+	if err != nil {
+		return nil, err
+	}
+	defer func() {
+		if err != nil {
+			process.Close()
+		}
+	}()
+
+	pipes, err := makeOpenFiles([]syscall.Handle{processInfo.StdInput, processInfo.StdOutput, processInfo.StdError})
+	if err != nil {
+		return nil, makeSystemError(computeSystem, operation, "", err, nil)
+	}
+	process.stdin = pipes[0]
+	process.stdout = pipes[1]
+	process.stderr = pipes[2]
+
+	if err = process.registerCallback(ctx); err != nil {
+		return nil, makeSystemError(computeSystem, operation, "", err, nil)
 	}
 	go process.waitBackground()
 
@@ -549,38 +513,25 @@ func (computeSystem *System) CreateProcess(c interface{}) (_ *Process, err error
 }
 
 // OpenProcess gets an interface to an existing process within the computeSystem.
-func (computeSystem *System) OpenProcess(pid int) (_ *Process, err error) {
+func (computeSystem *System) OpenProcess(ctx context.Context, pid int) (*Process, error) {
 	computeSystem.handleLock.RLock()
 	defer computeSystem.handleLock.RUnlock()
 
-	// Add PID for the context of this operation
+	operation := "hcsshim::System::OpenProcess"
-	computeSystem.logctx[logfields.ProcessID] = pid
-	defer delete(computeSystem.logctx, logfields.ProcessID)
-
-	operation := "hcsshim::ComputeSystem::OpenProcess"
-	computeSystem.logOperationBegin(operation)
-	defer func() { computeSystem.logOperationEnd(operation, err) }()
-
-	var (
-		processHandle hcsProcess
-		resultp       *uint16
-	)
 
 	if computeSystem.handle == 0 {
-		return nil, makeSystemError(computeSystem, "OpenProcess", "", ErrAlreadyClosed, nil)
+		return nil, makeSystemError(computeSystem, operation, "", ErrAlreadyClosed, nil)
 	}
 
-	syscallWatcher(computeSystem.logctx, func() {
+	processHandle, resultJSON, err := vmcompute.HcsOpenProcess(ctx, computeSystem.handle, uint32(pid))
-		err = hcsOpenProcess(computeSystem.handle, uint32(pid), &processHandle, &resultp)
+	events := processHcsResult(ctx, resultJSON)
-	})
-	events := processHcsResult(resultp)
 	if err != nil {
-		return nil, makeSystemError(computeSystem, "OpenProcess", "", err, events)
+		return nil, makeSystemError(computeSystem, operation, "", err, events)
 	}
 
 	process := newProcess(processHandle, pid, computeSystem)
-	if err = process.registerCallback(); err != nil {
+	if err = process.registerCallback(ctx); err != nil {
-		return nil, makeSystemError(computeSystem, "OpenProcess", "", err, nil)
+		return nil, makeSystemError(computeSystem, operation, "", err, nil)
 	}
 	go process.waitBackground()
 
@@ -589,68 +540,72 @@ func (computeSystem *System) OpenProcess(pid int) (_ *Process, err error) {
 
 // Close cleans up any state associated with the compute system but does not terminate or wait for it.
 func (computeSystem *System) Close() (err error) {
+	operation := "hcsshim::System::Close"
+	ctx, span := trace.StartSpan(context.Background(), operation)
+	defer span.End()
+	defer func() { oc.SetSpanStatus(span, err) }()
+	span.AddAttributes(trace.StringAttribute("cid", computeSystem.id))
+
 	computeSystem.handleLock.Lock()
 	defer computeSystem.handleLock.Unlock()
 
-	operation := "hcsshim::ComputeSystem::Close"
-	computeSystem.logOperationBegin(operation)
-	defer func() { computeSystem.logOperationEnd(operation, err) }()
-
 	// Don't double free this
 	if computeSystem.handle == 0 {
 		return nil
 	}
 
-	if err = computeSystem.unregisterCallback(); err != nil {
+	if err = computeSystem.unregisterCallback(ctx); err != nil {
-		return makeSystemError(computeSystem, "Close", "", err, nil)
+		return makeSystemError(computeSystem, operation, "", err, nil)
 	}
 
-	syscallWatcher(computeSystem.logctx, func() {
+	err = vmcompute.HcsCloseComputeSystem(ctx, computeSystem.handle)
-		err = hcsCloseComputeSystem(computeSystem.handle)
-	})
 	if err != nil {
-		return makeSystemError(computeSystem, "Close", "", err, nil)
+		return makeSystemError(computeSystem, operation, "", err, nil)
 	}
 
 	computeSystem.handle = 0
+	computeSystem.closedWaitOnce.Do(func() {
+		computeSystem.waitError = ErrAlreadyClosed
+		close(computeSystem.waitBlock)
+	})
 
 	return nil
 }
 
-func (computeSystem *System) registerCallback() error {
+func (computeSystem *System) registerCallback(ctx context.Context) error {
-	context := &notifcationWatcherContext{
+	callbackContext := &notifcationWatcherContext{
-		channels: newChannels(),
+		channels: newSystemChannels(),
+		systemID: computeSystem.id,
 	}
 
 	callbackMapLock.Lock()
 	callbackNumber := nextCallback
 	nextCallback++
-	callbackMap[callbackNumber] = context
+	callbackMap[callbackNumber] = callbackContext
 	callbackMapLock.Unlock()
 
-	var callbackHandle hcsCallback
+	callbackHandle, err := vmcompute.HcsRegisterComputeSystemCallback(ctx, computeSystem.handle, notificationWatcherCallback, callbackNumber)
-	err := hcsRegisterComputeSystemCallback(computeSystem.handle, notificationWatcherCallback, callbackNumber, &callbackHandle)
 	if err != nil {
 		return err
 	}
-	context.handle = callbackHandle
+	callbackContext.handle = callbackHandle
 	computeSystem.callbackNumber = callbackNumber
 
 	return nil
 }
 
-func (computeSystem *System) unregisterCallback() error {
+func (computeSystem *System) unregisterCallback(ctx context.Context) error {
 	callbackNumber := computeSystem.callbackNumber
 
 	callbackMapLock.RLock()
-	context := callbackMap[callbackNumber]
+	callbackContext := callbackMap[callbackNumber]
 	callbackMapLock.RUnlock()
 
-	if context == nil {
+	if callbackContext == nil {
 		return nil
 	}
 
-	handle := context.handle
+	handle := callbackContext.handle
 
 	if handle == 0 {
 		return nil
@@ -658,12 +613,12 @@ func (computeSystem *System) unregisterCallback() error {
 
 	// hcsUnregisterComputeSystemCallback has its own syncronization
 	// to wait for all callbacks to complete. We must NOT hold the callbackMapLock.
-	err := hcsUnregisterComputeSystemCallback(handle)
+	err := vmcompute.HcsUnregisterComputeSystemCallback(ctx, handle)
 	if err != nil {
 		return err
 	}
 
-	closeChannels(context.channels)
+	closeChannels(callbackContext.channels)
 
 	callbackMapLock.Lock()
 	delete(callbackMap, callbackNumber)
@@ -675,36 +630,26 @@ func (computeSystem *System) unregisterCallback() error {
 }
 
 // Modify the System by sending a request to HCS
-func (computeSystem *System) Modify(config interface{}) (err error) {
+func (computeSystem *System) Modify(ctx context.Context, config interface{}) error {
 	computeSystem.handleLock.RLock()
 	defer computeSystem.handleLock.RUnlock()
 
-	operation := "hcsshim::ComputeSystem::Modify"
+	operation := "hcsshim::System::Modify"
-	computeSystem.logOperationBegin(operation)
-	defer func() { computeSystem.logOperationEnd(operation, err) }()
 
 	if computeSystem.handle == 0 {
-		return makeSystemError(computeSystem, "Modify", "", ErrAlreadyClosed, nil)
+		return makeSystemError(computeSystem, operation, "", ErrAlreadyClosed, nil)
 	}
 
-	requestJSON, err := json.Marshal(config)
+	requestBytes, err := json.Marshal(config)
 	if err != nil {
 		return err
 	}
 
-	requestString := string(requestJSON)
+	requestJSON := string(requestBytes)
-
+	resultJSON, err := vmcompute.HcsModifyComputeSystem(ctx, computeSystem.handle, requestJSON)
-	logrus.WithFields(computeSystem.logctx).
+	events := processHcsResult(ctx, resultJSON)
-		WithField(logfields.JSON, requestString).
-		Debug("HCS ComputeSystem Modify Document")
-
-	var resultp *uint16
-	syscallWatcher(computeSystem.logctx, func() {
-		err = hcsModifyComputeSystem(computeSystem.handle, requestString, &resultp)
-	})
-	events := processHcsResult(resultp)
 	if err != nil {
-		return makeSystemError(computeSystem, "Modify", requestString, err, events)
+		return makeSystemError(computeSystem, operation, requestJSON, err, events)
 	}
 
 	return nil

vendor/github.com/Microsoft/hcsshim/internal/hcs/waithelper.go

@@ -1,25 +1,26 @@
 package hcs
 
 import (
+	"context"
 	"time"
 
-	"github.com/sirupsen/logrus"
+	"github.com/Microsoft/hcsshim/internal/log"
 )
 
-func processAsyncHcsResult(err error, resultp *uint16, callbackNumber uintptr, expectedNotification hcsNotification, timeout *time.Duration) ([]ErrorEvent, error) {
+func processAsyncHcsResult(ctx context.Context, err error, resultJSON string, callbackNumber uintptr, expectedNotification hcsNotification, timeout *time.Duration) ([]ErrorEvent, error) {
-	events := processHcsResult(resultp)
+	events := processHcsResult(ctx, resultJSON)
 	if IsPending(err) {
-		return nil, waitForNotification(callbackNumber, expectedNotification, timeout)
+		return nil, waitForNotification(ctx, callbackNumber, expectedNotification, timeout)
 	}
 
 	return events, err
 }
 
-func waitForNotification(callbackNumber uintptr, expectedNotification hcsNotification, timeout *time.Duration) error {
+func waitForNotification(ctx context.Context, callbackNumber uintptr, expectedNotification hcsNotification, timeout *time.Duration) error {
 	callbackMapLock.RLock()
 	if _, ok := callbackMap[callbackNumber]; !ok {
 		callbackMapLock.RUnlock()
-		logrus.Errorf("failed to waitForNotification: callbackNumber %d does not exist in callbackMap", callbackNumber)
+		log.G(ctx).WithField("callbackNumber", callbackNumber).Error("failed to waitForNotification: callbackNumber does not exist in callbackMap")
 		return ErrHandleClose
 	}
 	channels := callbackMap[callbackNumber].channels
@@ -27,7 +28,7 @@ func waitForNotification(callbackNumber uintptr, expectedNotification hcsNotific
 
 	expectedChannel := channels[expectedNotification]
 	if expectedChannel == nil {
-		logrus.Errorf("unknown notification type in waitForNotification %x", expectedNotification)
+		log.G(ctx).WithField("type", expectedNotification).Error("unknown notification type in waitForNotification")
 		return ErrInvalidNotificationType
 	}
 

vendor/github.com/Microsoft/hcsshim/internal/hcs/watcher.go

@@ -1,41 +0,0 @@
-package hcs
-
-import (
-	"context"
-
-	"github.com/Microsoft/hcsshim/internal/logfields"
-	"github.com/Microsoft/hcsshim/internal/timeout"
-	"github.com/sirupsen/logrus"
-)
-
-// syscallWatcher is used as a very simple goroutine around calls into
-// the platform. In some cases, we have seen HCS APIs not returning due to
-// various bugs, and the goroutine making the syscall ends up not returning,
-// prior to its async callback. By spinning up a syscallWatcher, it allows
-// us to at least log a warning if a syscall doesn't complete in a reasonable
-// amount of time.
-//
-// Usage is:
-//
-// syscallWatcher(logContext, func() {
-//    err = <syscall>(args...)
-// })
-//
-
-func syscallWatcher(logContext logrus.Fields, syscallLambda func()) {
-	ctx, cancel := context.WithTimeout(context.Background(), timeout.SyscallWatcher)
-	defer cancel()
-	go watchFunc(ctx, logContext)
-	syscallLambda()
-}
-
-func watchFunc(ctx context.Context, logContext logrus.Fields) {
-	select {
-	case <-ctx.Done():
-		if ctx.Err() != context.Canceled {
-			logrus.WithFields(logContext).
-				WithField(logfields.Timeout, timeout.SyscallWatcher).
-				Warning("Syscall did not complete within operation timeout. This may indicate a platform issue. If it appears to be making no forward progress, obtain the stacks and see if there is a syscall stuck in the platform API for a significant length of time.")
-		}
-	}
-}

vendor/github.com/Microsoft/hcsshim/internal/hns/hnsendpoint.go

@@ -3,6 +3,7 @@ package hns
 import (
 	"encoding/json"
 	"net"
+	"strings"
 
 	"github.com/sirupsen/logrus"
 )
@@ -94,6 +95,27 @@ func GetHNSEndpointByName(endpointName string) (*HNSEndpoint, error) {
 	return nil, EndpointNotFoundError{EndpointName: endpointName}
 }
 
+type endpointAttachInfo struct {
+	SharedContainers json.RawMessage `json:",omitempty"`
+}
+
+func (endpoint *HNSEndpoint) IsAttached(vID string) (bool, error) {
+	attachInfo := endpointAttachInfo{}
+	err := hnsCall("GET", "/endpoints/"+endpoint.Id, "", &attachInfo)
+
+	// Return false allows us to just return the err
+	if err != nil {
+		return false, err
+	}
+
+	if strings.Contains(strings.ToLower(string(attachInfo.SharedContainers)), strings.ToLower(vID)) {
+		return true, nil
+	}
+
+	return false, nil
+
+}
+
 // Create Endpoint by sending EndpointRequest to HNS. TODO: Create a separate HNS interface to place all these methods
 func (endpoint *HNSEndpoint) Create() (*HNSEndpoint, error) {
 	operation := "Create"

vendor/github.com/Microsoft/hcsshim/internal/hns/hnsfuncs.go

@@ -9,23 +9,30 @@ import (
 	"github.com/sirupsen/logrus"
 )
 
-func hnsCall(method, path, request string, returnResponse interface{}) error {
+func hnsCallRawResponse(method, path, request string) (*hnsResponse, error) {
 	var responseBuffer *uint16
 	logrus.Debugf("[%s]=>[%s] Request : %s", method, path, request)
 
 	err := _hnsCall(method, path, request, &responseBuffer)
 	if err != nil {
-		return hcserror.New(err, "hnsCall ", "")
+		return nil, hcserror.New(err, "hnsCall ", "")
 	}
 	response := interop.ConvertAndFreeCoTaskMemString(responseBuffer)
 
 	hnsresponse := &hnsResponse{}
 	if err = json.Unmarshal([]byte(response), &hnsresponse); err != nil {
-		return err
+		return nil, err
 	}
+	return hnsresponse, nil
+}
 
+func hnsCall(method, path, request string, returnResponse interface{}) error {
+	hnsresponse, err := hnsCallRawResponse(method, path, request)
+	if err != nil {
+		return fmt.Errorf("failed during hnsCallRawResponse: %v", err)
+	}
 	if !hnsresponse.Success {
-		return fmt.Errorf("HNS failed with error : %s", hnsresponse.Error)
+		return fmt.Errorf("hns failed with error : %s", hnsresponse.Error)
 	}
 
 	if len(hnsresponse.Output) == 0 {

vendor/github.com/Microsoft/hcsshim/internal/interop/interop.go

@@ -15,10 +15,6 @@ func ConvertAndFreeCoTaskMemString(buffer *uint16) string {
 	return str
 }
 
-func ConvertAndFreeCoTaskMemBytes(buffer *uint16) []byte {
-	return []byte(ConvertAndFreeCoTaskMemString(buffer))
-}
-
 func Win32FromHresult(hr uintptr) syscall.Errno {
 	if hr&0x1fff0000 == 0x00070000 {
 		return syscall.Errno(hr & 0xffff)

vendor/github.com/Microsoft/hcsshim/internal/log/g.go

@@ -0,0 +1,23 @@
+package log
+
+import (
+	"context"
+
+	"github.com/sirupsen/logrus"
+	"go.opencensus.io/trace"
+)
+
+// G returns a `logrus.Entry` with the `TraceID, SpanID` from `ctx` if `ctx`
+// contains an OpenCensus `trace.Span`.
+func G(ctx context.Context) *logrus.Entry {
+	span := trace.FromContext(ctx)
+	if span != nil {
+		sctx := span.SpanContext()
+		return logrus.WithFields(logrus.Fields{
+			"traceID": sctx.TraceID.String(),
+			"spanID":  sctx.SpanID.String(),
+			// "parentSpanID": TODO: JTERRY75 - Try to convince OC to export this?
+		})
+	}
+	return logrus.NewEntry(logrus.StandardLogger())
+}

vendor/github.com/Microsoft/hcsshim/internal/oc/exporter.go

@@ -0,0 +1,43 @@
+package oc
+
+import (
+	"github.com/sirupsen/logrus"
+	"go.opencensus.io/trace"
+)
+
+var _ = (trace.Exporter)(&LogrusExporter{})
+
+// LogrusExporter is an OpenCensus `trace.Exporter` that exports
+// `trace.SpanData` to logrus output.
+type LogrusExporter struct {
+}
+
+// ExportSpan exports `s` based on the the following rules:
+//
+// 1. All output will contain `s.Attributes`, `s.TraceID`, `s.SpanID`,
+// `s.ParentSpanID` for correlation
+//
+// 2. Any calls to .Annotate will not be supported.
+//
+// 3. The span itself will be written at `logrus.InfoLevel` unless
+// `s.Status.Code != 0` in which case it will be written at `logrus.ErrorLevel`
+// providing `s.Status.Message` as the error value.
+func (le *LogrusExporter) ExportSpan(s *trace.SpanData) {
+	// Combine all span annotations with traceID, spanID, parentSpanID
+	baseEntry := logrus.WithFields(logrus.Fields(s.Attributes))
+	baseEntry.Data["traceID"] = s.TraceID.String()
+	baseEntry.Data["spanID"] = s.SpanID.String()
+	baseEntry.Data["parentSpanID"] = s.ParentSpanID.String()
+	baseEntry.Data["startTime"] = s.StartTime
+	baseEntry.Data["endTime"] = s.EndTime
+	baseEntry.Data["duration"] = s.EndTime.Sub(s.StartTime).String()
+	baseEntry.Data["name"] = s.Name
+	baseEntry.Time = s.StartTime
+
+	level := logrus.InfoLevel
+	if s.Status.Code != 0 {
+		level = logrus.ErrorLevel
+		baseEntry.Data[logrus.ErrorKey] = s.Status.Message
+	}
+	baseEntry.Log(level, "Span")
+}

vendor/github.com/Microsoft/hcsshim/internal/oc/span.go

@@ -0,0 +1,17 @@
+package oc
+
+import (
+	"go.opencensus.io/trace"
+)
+
+// SetSpanStatus sets `span.SetStatus` to the proper status depending on `err`. If
+// `err` is `nil` assumes `trace.StatusCodeOk`.
+func SetSpanStatus(span *trace.Span, err error) {
+	status := trace.Status{}
+	if err != nil {
+		// TODO: JTERRY75 - Handle errors in a non-generic way
+		status.Code = trace.StatusCodeUnknown
+		status.Message = err.Error()
+	}
+	span.SetStatus(status)
+}

vendor/github.com/Microsoft/hcsshim/internal/runhcs/container.go

@@ -10,7 +10,7 @@ import (
 	"syscall"
 	"time"
 
-	"github.com/Microsoft/hcsshim/internal/guid"
+	"github.com/Microsoft/go-winio/pkg/guid"
 )
 
 // ContainerState represents the platform agnostic pieces relating to a

vendor/github.com/Microsoft/hcsshim/internal/schema1/schema1.go

@@ -4,7 +4,8 @@ import (
 	"encoding/json"
 	"time"
 
-	"github.com/Microsoft/hcsshim/internal/schema2"
+	"github.com/Microsoft/go-winio/pkg/guid"
+	hcsschema "github.com/Microsoft/hcsshim/internal/schema2"
 )
 
 // ProcessConfig is used as both the input of Container.CreateProcess
@@ -62,7 +63,7 @@ type MappedVirtualDisk struct {
 	CreateInUtilityVM bool   `json:",omitempty"`
 	ReadOnly          bool   `json:",omitempty"`
 	Cache             string `json:",omitempty"` // "" (Unspecified); "Disabled"; "Enabled"; "Private"; "PrivateAllowSharing"
-	AttachOnly        bool   `json:",omitempty:`
+	AttachOnly        bool   `json:",omitempty"`
 }
 
 // AssignedDevice represents a device that has been directly assigned to a container
@@ -133,9 +134,10 @@ type ContainerProperties struct {
 	State                        string
 	Name                         string
 	SystemType                   string
+	RuntimeOSType                string `json:"RuntimeOsType,omitempty"`
 	Owner                        string
 	SiloGUID                     string                              `json:"SiloGuid,omitempty"`
-	RuntimeID                    string                              `json:"RuntimeId,omitempty"`
+	RuntimeID                    guid.GUID                           `json:"RuntimeId,omitempty"`
 	IsRuntimeTemplate            bool                                `json:",omitempty"`
 	RuntimeImagePath             string                              `json:",omitempty"`
 	Stopped                      bool                                `json:",omitempty"`
@@ -214,6 +216,7 @@ type MappedVirtualDiskController struct {
 type GuestDefinedCapabilities struct {
 	NamespaceAddRequestSupported bool `json:",omitempty"`
 	SignalProcessSupported       bool `json:",omitempty"`
+	DumpStacksSupported          bool `json:",omitempty"`
 }
 
 // GuestConnectionInfo is the structure of an iterm return by a GuestConnection call on a utility VM

vendor/github.com/Microsoft/hcsshim/internal/schema2/attachment.go

@@ -10,7 +10,6 @@
 package hcsschema
 
 type Attachment struct {
-
 	Type_ string `json:"Type,omitempty"`
 
 	Path string `json:"Path,omitempty"`

vendor/github.com/Microsoft/hcsshim/internal/schema2/cache_query_stats_response.go

@@ -10,7 +10,6 @@
 package hcsschema
 
 type CacheQueryStatsResponse struct {
-
 	L3OccupancyBytes int32 `json:"L3OccupancyBytes,omitempty"`
 
 	L3TotalBwBytes int32 `json:"L3TotalBwBytes,omitempty"`

vendor/github.com/Microsoft/hcsshim/internal/schema2/close_handle.go

@@ -10,6 +10,5 @@
 package hcsschema
 
 type CloseHandle struct {
-
 	Handle string `json:"Handle,omitempty"`
 }

vendor/github.com/Microsoft/hcsshim/internal/schema2/com_port.go

@@ -11,7 +11,6 @@ package hcsschema
 
 //  ComPort specifies the named pipe that will be used for the port, with empty string indicating a disconnected port.
 type ComPort struct {
-
 	NamedPipe string `json:"NamedPipe,omitempty"`
 
 	OptimizeForDebugger bool `json:"OptimizeForDebugger,omitempty"`

vendor/github.com/Microsoft/hcsshim/internal/schema2/compute_system.go

@@ -10,14 +10,13 @@
 package hcsschema
 
 type ComputeSystem struct {
-
 	Owner string `json:"Owner,omitempty"`
 
 	SchemaVersion *Version `json:"SchemaVersion,omitempty"`
 
 	HostingSystemId string `json:"HostingSystemId,omitempty"`
 
-	HostedSystem *HostedSystem `json:"HostedSystem,omitempty"`
+	HostedSystem interface{} `json:"HostedSystem,omitempty"`
 
 	Container *Container `json:"Container,omitempty"`
 

vendor/github.com/Microsoft/hcsshim/internal/schema2/configuration.go

@@ -25,37 +25,37 @@ func (c contextKey) String() string {
 
 var (
 	// ContextOAuth2 takes a oauth2.TokenSource as authentication for the request.
-	ContextOAuth2    	= contextKey("token")
+	ContextOAuth2 = contextKey("token")
 
 	// ContextBasicAuth takes BasicAuth as authentication for the request.
-	ContextBasicAuth 	= contextKey("basic")
+	ContextBasicAuth = contextKey("basic")
 
 	// ContextAccessToken takes a string oauth2 access token as authentication for the request.
-	ContextAccessToken 	= contextKey("accesstoken")
+	ContextAccessToken = contextKey("accesstoken")
 
 	// ContextAPIKey takes an APIKey as authentication for the request
- 	ContextAPIKey 		= contextKey("apikey")
+	ContextAPIKey = contextKey("apikey")
 )
 
-// BasicAuth provides basic http authentication to a request passed via context using ContextBasicAuth 
+// BasicAuth provides basic http authentication to a request passed via context using ContextBasicAuth
 type BasicAuth struct {
-	UserName      string            `json:"userName,omitempty"`
+	UserName string `json:"userName,omitempty"`
-	Password      string            `json:"password,omitempty"`	
+	Password string `json:"password,omitempty"`
 }
 
 // APIKey provides API key based authentication to a request passed via context using ContextAPIKey
 type APIKey struct {
-	Key 	string
+	Key    string
-	Prefix	string
+	Prefix string
 }
 
 type Configuration struct {
-	BasePath      string            	`json:"basePath,omitempty"`
+	BasePath      string            `json:"basePath,omitempty"`
-	Host          string            	`json:"host,omitempty"`
+	Host          string            `json:"host,omitempty"`
-	Scheme        string            	`json:"scheme,omitempty"`
+	Scheme        string            `json:"scheme,omitempty"`
-	DefaultHeader map[string]string 	`json:"defaultHeader,omitempty"`
+	DefaultHeader map[string]string `json:"defaultHeader,omitempty"`
-	UserAgent     string            	`json:"userAgent,omitempty"`
+	UserAgent     string            `json:"userAgent,omitempty"`
-	HTTPClient 	  *http.Client
+	HTTPClient    *http.Client
 }
 
 func NewConfiguration() *Configuration {
@@ -69,4 +69,4 @@ func NewConfiguration() *Configuration {
 
 func (c *Configuration) AddDefaultHeader(key string, value string) {
 	c.DefaultHeader[key] = value
-}
+}

vendor/github.com/Microsoft/hcsshim/internal/schema2/console_size.go

@@ -10,7 +10,6 @@
 package hcsschema
 
 type ConsoleSize struct {
-
 	Height int32 `json:"Height,omitempty"`
 
 	Width int32 `json:"Width,omitempty"`

vendor/github.com/Microsoft/hcsshim/internal/schema2/container.go

@@ -10,7 +10,6 @@
 package hcsschema
 
 type Container struct {
-
 	GuestOs *GuestOs `json:"GuestOs,omitempty"`
 
 	Storage *Storage `json:"Storage,omitempty"`

vendor/github.com/Microsoft/hcsshim/internal/schema2/container_memory_information.go

@@ -11,7 +11,6 @@ package hcsschema
 
 //  memory usage as viewed from within the container
 type ContainerMemoryInformation struct {
-
 	TotalPhysicalBytes int32 `json:"TotalPhysicalBytes,omitempty"`
 
 	TotalUsage int32 `json:"TotalUsage,omitempty"`

vendor/github.com/Microsoft/hcsshim/internal/schema2/devices.go

@@ -10,7 +10,6 @@
 package hcsschema
 
 type Devices struct {
-
 	ComPorts map[string]ComPort `json:"ComPorts,omitempty"`
 
 	Scsi map[string]Scsi `json:"Scsi,omitempty"`

vendor/github.com/Microsoft/hcsshim/internal/schema2/enhanced_mode_video.go

@@ -10,6 +10,5 @@
 package hcsschema
 
 type EnhancedModeVideo struct {
-
 	ConnectionOptions *RdpConnectionOptions `json:"ConnectionOptions,omitempty"`
 }

vendor/github.com/Microsoft/hcsshim/internal/schema2/flexible_io_device.go

@@ -10,7 +10,6 @@
 package hcsschema
 
 type FlexibleIoDevice struct {
-
 	EmulatorId string `json:"EmulatorId,omitempty"`
 
 	HostingModel string `json:"HostingModel,omitempty"`

vendor/github.com/Microsoft/hcsshim/internal/schema2/guest_crash_reporting.go

@@ -10,6 +10,5 @@
 package hcsschema
 
 type GuestCrashReporting struct {
-
 	WindowsCrashSettings *WindowsCrashReporting `json:"WindowsCrashSettings,omitempty"`
 }

vendor/github.com/Microsoft/hcsshim/internal/schema2/guest_os.go

@@ -10,6 +10,5 @@
 package hcsschema
 
 type GuestOs struct {
-
 	HostName string `json:"HostName,omitempty"`
 }

vendor/github.com/Microsoft/hcsshim/internal/schema2/hosted_system.go

@@ -10,7 +10,6 @@
 package hcsschema
 
 type HostedSystem struct {
-
 	SchemaVersion *Version `json:"SchemaVersion,omitempty"`
 
 	Container *Container `json:"Container,omitempty"`

vendor/github.com/Microsoft/hcsshim/internal/schema2/hv_socket.go

@@ -10,7 +10,6 @@
 package hcsschema
 
 type HvSocket struct {
-
 	Config *HvSocketSystemConfig `json:"Config,omitempty"`
 
 	EnablePowerShellDirect bool `json:"EnablePowerShellDirect,omitempty"`

vendor/github.com/Microsoft/hcsshim/internal/schema2/hv_socket_2.go

@@ -11,6 +11,5 @@ package hcsschema
 
 //  HvSocket configuration for a VM
 type HvSocket2 struct {
-
 	HvSocketConfig *HvSocketSystemConfig `json:"HvSocketConfig,omitempty"`
 }

vendor/github.com/Microsoft/hcsshim/internal/schema2/layer.go

@@ -10,7 +10,6 @@
 package hcsschema
 
 type Layer struct {
-
 	Id string `json:"Id,omitempty"`
 
 	Path string `json:"Path,omitempty"`

vendor/github.com/Microsoft/hcsshim/internal/schema2/mapped_directory.go

@@ -10,7 +10,6 @@
 package hcsschema
 
 type MappedDirectory struct {
-
 	HostPath string `json:"HostPath,omitempty"`
 
 	HostPathType string `json:"HostPathType,omitempty"`

vendor/github.com/Microsoft/hcsshim/internal/schema2/mapped_pipe.go

@@ -10,7 +10,6 @@
 package hcsschema
 
 type MappedPipe struct {
-
 	ContainerPipeName string `json:"ContainerPipeName,omitempty"`
 
 	HostPath string `json:"HostPath,omitempty"`

vendor/github.com/Microsoft/hcsshim/internal/schema2/memory.go

@@ -10,6 +10,5 @@
 package hcsschema
 
 type Memory struct {
-
 	SizeInMB int32 `json:"SizeInMB,omitempty"`
 }

vendor/github.com/Microsoft/hcsshim/internal/schema2/memory_information_for_vm.go

@@ -10,7 +10,6 @@
 package hcsschema
 
 type MemoryInformationForVm struct {
-
 	VirtualNodeCount int32 `json:"VirtualNodeCount,omitempty"`
 
 	VirtualMachineMemory *VmMemory `json:"VirtualMachineMemory,omitempty"`

vendor/github.com/Microsoft/hcsshim/internal/schema2/memory_stats.go

@@ -11,7 +11,6 @@ package hcsschema
 
 //  Memory runtime statistics
 type MemoryStats struct {
-
 	MemoryUsageCommitBytes int32 `json:"MemoryUsageCommitBytes,omitempty"`
 
 	MemoryUsageCommitPeakBytes int32 `json:"MemoryUsageCommitPeakBytes,omitempty"`

vendor/github.com/Microsoft/hcsshim/internal/schema2/network_adapter.go

@@ -10,7 +10,6 @@
 package hcsschema
 
 type NetworkAdapter struct {
-
 	EndpointId string `json:"EndpointId,omitempty"`
 
 	MacAddress string `json:"MacAddress,omitempty"`

vendor/github.com/Microsoft/hcsshim/internal/schema2/networking.go

@@ -10,7 +10,6 @@
 package hcsschema
 
 type Networking struct {
-
 	AllowUnqualifiedDnsQuery bool `json:"AllowUnqualifiedDnsQuery,omitempty"`
 
 	DnsSearchList string `json:"DnsSearchList,omitempty"`

vendor/github.com/Microsoft/hcsshim/internal/schema2/pause_notification.go

@@ -11,6 +11,5 @@ package hcsschema
 
 //  Notification data that is indicated to components running in the Virtual Machine.
 type PauseNotification struct {
-
 	Reason string `json:"Reason,omitempty"`
 }

vendor/github.com/Microsoft/hcsshim/internal/schema2/pause_options.go

@@ -11,7 +11,6 @@ package hcsschema
 
 //  Options for HcsPauseComputeSystem
 type PauseOptions struct {
-
 	SuspensionLevel string `json:"SuspensionLevel,omitempty"`
 
 	HostedNotification *PauseNotification `json:"HostedNotification,omitempty"`

vendor/github.com/Microsoft/hcsshim/internal/schema2/plan9.go

@@ -10,6 +10,5 @@
 package hcsschema
 
 type Plan9 struct {
-
 	Shares []Plan9Share `json:"Shares,omitempty"`
 }

vendor/github.com/Microsoft/hcsshim/internal/schema2/process_details.go

@@ -15,7 +15,6 @@ import (
 
 //  Information about a process running in a container
 type ProcessDetails struct {
-
 	ProcessId int32 `json:"ProcessId,omitempty"`
 
 	ImageName string `json:"ImageName,omitempty"`

vendor/github.com/Microsoft/hcsshim/internal/schema2/process_modify_request.go

@@ -11,7 +11,6 @@ package hcsschema
 
 //  Passed to HcsRpc_ModifyProcess
 type ProcessModifyRequest struct {
-
 	Operation string `json:"Operation,omitempty"`
 
 	ConsoleSize *ConsoleSize `json:"ConsoleSize,omitempty"`

vendor/github.com/Microsoft/hcsshim/internal/schema2/process_parameters.go

@@ -10,7 +10,6 @@
 package hcsschema
 
 type ProcessParameters struct {
-
 	ApplicationName string `json:"ApplicationName,omitempty"`
 
 	CommandLine string `json:"CommandLine,omitempty"`

vendor/github.com/Microsoft/hcsshim/internal/schema2/process_status.go

@@ -11,7 +11,6 @@ package hcsschema
 
 //  Status of a process running in a container
 type ProcessStatus struct {
-
 	ProcessId int32 `json:"ProcessId,omitempty"`
 
 	Exited bool `json:"Exited,omitempty"`

vendor/github.com/Microsoft/hcsshim/internal/schema2/processor.go

@@ -10,7 +10,6 @@
 package hcsschema
 
 type Processor struct {
-
 	Count int32 `json:"Count,omitempty"`
 
 	Maximum int32 `json:"Maximum,omitempty"`

vendor/github.com/Microsoft/hcsshim/internal/schema2/processor_2.go

@@ -10,7 +10,6 @@
 package hcsschema
 
 type Processor2 struct {
-
 	Count int32 `json:"Count,omitempty"`
 
 	Limit int32 `json:"Limit,omitempty"`

vendor/github.com/Microsoft/hcsshim/internal/schema2/processor_stats.go

@@ -11,7 +11,6 @@ package hcsschema
 
 //  CPU runtime statistics
 type ProcessorStats struct {
-
 	TotalRuntime100ns int32 `json:"TotalRuntime100ns,omitempty"`
 
 	RuntimeUser100ns int32 `json:"RuntimeUser100ns,omitempty"`

vendor/github.com/Microsoft/hcsshim/internal/schema2/properties.go

@@ -10,7 +10,6 @@
 package hcsschema
 
 type Properties struct {
-
 	Id string `json:"Id,omitempty"`
 
 	SystemType string `json:"SystemType,omitempty"`

vendor/github.com/Microsoft/hcsshim/internal/schema2/property_query.go

@@ -9,8 +9,7 @@
 
 package hcsschema
 
-//   By default the basic properties will be returned. This query provides a way to  request specific properties. 
+//   By default the basic properties will be returned. This query provides a way to  request specific properties.
 type PropertyQuery struct {
-
 	PropertyTypes []string `json:"PropertyTypes,omitempty"`
 }

vendor/github.com/Microsoft/hcsshim/internal/schema2/rdp_connection_options.go

@@ -10,7 +10,6 @@
 package hcsschema
 
 type RdpConnectionOptions struct {
-
 	AccessSids []string `json:"AccessSids,omitempty"`
 
 	NamedPipe string `json:"NamedPipe,omitempty"`

vendor/github.com/Microsoft/hcsshim/internal/schema2/registry_changes.go

@@ -10,7 +10,6 @@
 package hcsschema
 
 type RegistryChanges struct {
-
 	AddValues []RegistryValue `json:"AddValues,omitempty"`
 
 	DeleteKeys []RegistryKey `json:"DeleteKeys,omitempty"`

vendor/github.com/Microsoft/hcsshim/internal/schema2/registry_key.go

@@ -10,7 +10,6 @@
 package hcsschema
 
 type RegistryKey struct {
-
 	Hive string `json:"Hive,omitempty"`
 
 	Name string `json:"Name,omitempty"`

vendor/github.com/Microsoft/hcsshim/internal/schema2/registry_value.go

@@ -10,7 +10,6 @@
 package hcsschema
 
 type RegistryValue struct {
-
 	Key *RegistryKey `json:"Key,omitempty"`
 
 	Name string `json:"Name,omitempty"`

vendor/github.com/Microsoft/hcsshim/internal/schema2/shared_memory_configuration.go

@@ -10,6 +10,5 @@
 package hcsschema
 
 type SharedMemoryConfiguration struct {
-
 	Regions []SharedMemoryRegion `json:"Regions,omitempty"`
 }

vendor/github.com/Microsoft/hcsshim/internal/schema2/shared_memory_region.go

@@ -10,7 +10,6 @@
 package hcsschema
 
 type SharedMemoryRegion struct {
-
 	SectionName string `json:"SectionName,omitempty"`
 
 	StartOffset int32 `json:"StartOffset,omitempty"`

vendor/github.com/Microsoft/hcsshim/internal/schema2/shared_memory_region_info.go

@@ -10,7 +10,6 @@
 package hcsschema
 
 type SharedMemoryRegionInfo struct {
-
 	SectionName string `json:"SectionName,omitempty"`
 
 	GuestPhysicalAddress int32 `json:"GuestPhysicalAddress,omitempty"`

vendor/github.com/Microsoft/hcsshim/internal/schema2/silo_properties.go

@@ -11,7 +11,6 @@ package hcsschema
 
 //  Silo job information
 type SiloProperties struct {
-
 	Enabled bool `json:"Enabled,omitempty"`
 
 	JobName string `json:"JobName,omitempty"`

vendor/github.com/Microsoft/hcsshim/internal/schema2/statistics.go

@@ -15,7 +15,6 @@ import (
 
 //  Runtime statistics for a container
 type Statistics struct {
-
 	Timestamp time.Time `json:"Timestamp,omitempty"`
 
 	ContainerStartTime time.Time `json:"ContainerStartTime,omitempty"`

vendor/github.com/Microsoft/hcsshim/internal/schema2/storage_qo_s.go

@@ -10,7 +10,6 @@
 package hcsschema
 
 type StorageQoS struct {
-
 	IopsMaximum int32 `json:"IopsMaximum,omitempty"`
 
 	BandwidthMaximum int32 `json:"BandwidthMaximum,omitempty"`

vendor/github.com/Microsoft/hcsshim/internal/schema2/storage_stats.go

@@ -11,7 +11,6 @@ package hcsschema
 
 //  Storage runtime statistics
 type StorageStats struct {
-
 	ReadCountNormalized int32 `json:"ReadCountNormalized,omitempty"`
 
 	ReadSizeBytes int32 `json:"ReadSizeBytes,omitempty"`

vendor/github.com/Microsoft/hcsshim/internal/schema2/topology.go

@@ -10,7 +10,6 @@
 package hcsschema
 
 type Topology struct {
-
 	Memory *Memory2 `json:"Memory,omitempty"`
 
 	Processor *Processor2 `json:"Processor,omitempty"`

vendor/github.com/Microsoft/hcsshim/internal/schema2/uefi.go

@@ -10,7 +10,6 @@
 package hcsschema
 
 type Uefi struct {
-
 	EnableDebugger bool `json:"EnableDebugger,omitempty"`
 
 	SecureBootTemplateId string `json:"SecureBootTemplateId,omitempty"`

vendor/github.com/Microsoft/hcsshim/internal/schema2/uefi_boot_entry.go

@@ -10,7 +10,6 @@
 package hcsschema
 
 type UefiBootEntry struct {
-
 	DeviceType string `json:"DeviceType,omitempty"`
 
 	DevicePath string `json:"DevicePath,omitempty"`

vendor/github.com/Microsoft/hcsshim/internal/schema2/version.go

@@ -10,7 +10,6 @@
 package hcsschema
 
 type Version struct {
-
 	Major int32 `json:"Major,omitempty"`
 
 	Minor int32 `json:"Minor,omitempty"`

vendor/github.com/Microsoft/hcsshim/internal/schema2/video_monitor.go

@@ -10,7 +10,6 @@
 package hcsschema
 
 type VideoMonitor struct {
-
 	HorizontalResolution int32 `json:"HorizontalResolution,omitempty"`
 
 	VerticalResolution int32 `json:"VerticalResolution,omitempty"`

vendor/github.com/Microsoft/hcsshim/internal/schema2/virtual_node_info.go

@@ -10,7 +10,6 @@
 package hcsschema
 
 type VirtualNodeInfo struct {
-
 	VirtualNodeIndex int32 `json:"VirtualNodeIndex,omitempty"`
 
 	PhysicalNodeNumber int32 `json:"PhysicalNodeNumber,omitempty"`

vendor/github.com/Microsoft/hcsshim/internal/schema2/virtual_p_mem_device.go

@@ -10,7 +10,6 @@
 package hcsschema
 
 type VirtualPMemDevice struct {
-
 	HostPath string `json:"HostPath,omitempty"`
 
 	ReadOnly bool `json:"ReadOnly,omitempty"`

vendor/github.com/Microsoft/hcsshim/internal/schema2/virtual_smb.go

@@ -10,7 +10,6 @@
 package hcsschema
 
 type VirtualSmb struct {
-
 	Shares []VirtualSmbShare `json:"Shares,omitempty"`
 
 	DirectFileMappingInMB int64 `json:"DirectFileMappingInMB,omitempty"`

vendor/github.com/Microsoft/hcsshim/internal/schema2/virtual_smb_share.go

@@ -10,7 +10,6 @@
 package hcsschema
 
 type VirtualSmbShare struct {
-
 	Name string `json:"Name,omitempty"`
 
 	Path string `json:"Path,omitempty"`

vendor/github.com/Microsoft/hcsshim/internal/schema2/virtual_smb_share_options.go

@@ -10,7 +10,6 @@
 package hcsschema
 
 type VirtualSmbShareOptions struct {
-
 	ReadOnly bool `json:"ReadOnly,omitempty"`
 
 	//  convert exclusive access to shared read access

vendor/github.com/Microsoft/hcsshim/internal/schema2/vm_memory.go

@@ -10,7 +10,6 @@
 package hcsschema
 
 type VmMemory struct {
-
 	AvailableMemory int32 `json:"AvailableMemory,omitempty"`
 
 	AvailableMemoryBuffer int32 `json:"AvailableMemoryBuffer,omitempty"`

vendor/github.com/Microsoft/hcsshim/internal/schema2/windows_crash_reporting.go

@@ -10,7 +10,6 @@
 package hcsschema
 
 type WindowsCrashReporting struct {
-
 	DumpFileName string `json:"DumpFileName,omitempty"`
 
 	MaxDumpSize int64 `json:"MaxDumpSize,omitempty"`

vendor/github.com/Microsoft/hcsshim/internal/vmcompute/vmcompute.go

@@ -0,0 +1,563 @@
+package vmcompute
+
+import (
+	gcontext "context"
+	"syscall"
+	"time"
+
+	"github.com/Microsoft/hcsshim/internal/interop"
+	"github.com/Microsoft/hcsshim/internal/log"
+	"github.com/Microsoft/hcsshim/internal/logfields"
+	"github.com/Microsoft/hcsshim/internal/oc"
+	"github.com/Microsoft/hcsshim/internal/timeout"
+	"go.opencensus.io/trace"
+)
+
+//go:generate go run ../../mksyscall_windows.go -output zsyscall_windows.go vmcompute.go
+
+//sys hcsEnumerateComputeSystems(query string, computeSystems **uint16, result **uint16) (hr error) = vmcompute.HcsEnumerateComputeSystems?
+//sys hcsCreateComputeSystem(id string, configuration string, identity syscall.Handle, computeSystem *HcsSystem, result **uint16) (hr error) = vmcompute.HcsCreateComputeSystem?
+//sys hcsOpenComputeSystem(id string, computeSystem *HcsSystem, result **uint16) (hr error) = vmcompute.HcsOpenComputeSystem?
+//sys hcsCloseComputeSystem(computeSystem HcsSystem) (hr error) = vmcompute.HcsCloseComputeSystem?
+//sys hcsStartComputeSystem(computeSystem HcsSystem, options string, result **uint16) (hr error) = vmcompute.HcsStartComputeSystem?
+//sys hcsShutdownComputeSystem(computeSystem HcsSystem, options string, result **uint16) (hr error) = vmcompute.HcsShutdownComputeSystem?
+//sys hcsTerminateComputeSystem(computeSystem HcsSystem, options string, result **uint16) (hr error) = vmcompute.HcsTerminateComputeSystem?
+//sys hcsPauseComputeSystem(computeSystem HcsSystem, options string, result **uint16) (hr error) = vmcompute.HcsPauseComputeSystem?
+//sys hcsResumeComputeSystem(computeSystem HcsSystem, options string, result **uint16) (hr error) = vmcompute.HcsResumeComputeSystem?
+//sys hcsGetComputeSystemProperties(computeSystem HcsSystem, propertyQuery string, properties **uint16, result **uint16) (hr error) = vmcompute.HcsGetComputeSystemProperties?
+//sys hcsModifyComputeSystem(computeSystem HcsSystem, configuration string, result **uint16) (hr error) = vmcompute.HcsModifyComputeSystem?
+//sys hcsRegisterComputeSystemCallback(computeSystem HcsSystem, callback uintptr, context uintptr, callbackHandle *HcsCallback) (hr error) = vmcompute.HcsRegisterComputeSystemCallback?
+//sys hcsUnregisterComputeSystemCallback(callbackHandle HcsCallback) (hr error) = vmcompute.HcsUnregisterComputeSystemCallback?
+
+//sys hcsCreateProcess(computeSystem HcsSystem, processParameters string, processInformation *HcsProcessInformation, process *HcsProcess, result **uint16) (hr error) = vmcompute.HcsCreateProcess?
+//sys hcsOpenProcess(computeSystem HcsSystem, pid uint32, process *HcsProcess, result **uint16) (hr error) = vmcompute.HcsOpenProcess?
+//sys hcsCloseProcess(process HcsProcess) (hr error) = vmcompute.HcsCloseProcess?
+//sys hcsTerminateProcess(process HcsProcess, result **uint16) (hr error) = vmcompute.HcsTerminateProcess?
+//sys hcsSignalProcess(process HcsProcess, options string, result **uint16) (hr error) = vmcompute.HcsSignalProcess?
+//sys hcsGetProcessInfo(process HcsProcess, processInformation *HcsProcessInformation, result **uint16) (hr error) = vmcompute.HcsGetProcessInfo?
+//sys hcsGetProcessProperties(process HcsProcess, processProperties **uint16, result **uint16) (hr error) = vmcompute.HcsGetProcessProperties?
+//sys hcsModifyProcess(process HcsProcess, settings string, result **uint16) (hr error) = vmcompute.HcsModifyProcess?
+//sys hcsGetServiceProperties(propertyQuery string, properties **uint16, result **uint16) (hr error) = vmcompute.HcsGetServiceProperties?
+//sys hcsRegisterProcessCallback(process HcsProcess, callback uintptr, context uintptr, callbackHandle *HcsCallback) (hr error) = vmcompute.HcsRegisterProcessCallback?
+//sys hcsUnregisterProcessCallback(callbackHandle HcsCallback) (hr error) = vmcompute.HcsUnregisterProcessCallback?
+
+// errVmcomputeOperationPending is an error encountered when the operation is being completed asynchronously
+const errVmcomputeOperationPending = syscall.Errno(0xC0370103)
+
+// HcsSystem is the handle associated with a created compute system.
+type HcsSystem syscall.Handle
+
+// HcsProcess is the handle associated with a created process in a compute
+// system.
+type HcsProcess syscall.Handle
+
+// HcsCallback is the handle associated with the function to call when events
+// occur.
+type HcsCallback syscall.Handle
+
+// HcsProcessInformation is the structure used when creating or getting process
+// info.
+type HcsProcessInformation struct {
+	// ProcessId is the pid of the created process.
+	ProcessId uint32
+	reserved  uint32
+	// StdInput is the handle associated with the stdin of the process.
+	StdInput syscall.Handle
+	// StdOutput is the handle associated with the stdout of the process.
+	StdOutput syscall.Handle
+	// StdError is the handle associated with the stderr of the process.
+	StdError syscall.Handle
+}
+
+func execute(ctx gcontext.Context, timeout time.Duration, f func() error) error {
+	if timeout > 0 {
+		var cancel gcontext.CancelFunc
+		ctx, cancel = gcontext.WithTimeout(ctx, timeout)
+		defer cancel()
+	}
+
+	done := make(chan error, 1)
+	go func() {
+		done <- f()
+	}()
+	select {
+	case <-ctx.Done():
+		if ctx.Err() == gcontext.DeadlineExceeded {
+			log.G(ctx).WithField(logfields.Timeout, timeout).
+				Warning("Syscall did not complete within operation timeout. This may indicate a platform issue. If it appears to be making no forward progress, obtain the stacks and see if there is a syscall stuck in the platform API for a significant length of time.")
+		}
+		return ctx.Err()
+	case err := <-done:
+		return err
+	}
+}
+
+func HcsEnumerateComputeSystems(ctx gcontext.Context, query string) (computeSystems, result string, hr error) {
+	ctx, span := trace.StartSpan(ctx, "HcsEnumerateComputeSystems")
+	defer span.End()
+	defer func() {
+		if result != "" {
+			span.AddAttributes(trace.StringAttribute("result", result))
+		}
+		oc.SetSpanStatus(span, hr)
+	}()
+	span.AddAttributes(trace.StringAttribute("query", query))
+
+	return computeSystems, result, execute(ctx, timeout.SyscallWatcher, func() error {
+		var (
+			computeSystemsp *uint16
+			resultp         *uint16
+		)
+		err := hcsEnumerateComputeSystems(query, &computeSystemsp, &resultp)
+		if computeSystemsp != nil {
+			computeSystems = interop.ConvertAndFreeCoTaskMemString(computeSystemsp)
+		}
+		if resultp != nil {
+			result = interop.ConvertAndFreeCoTaskMemString(resultp)
+		}
+		return err
+	})
+}
+
+func HcsCreateComputeSystem(ctx gcontext.Context, id string, configuration string, identity syscall.Handle) (computeSystem HcsSystem, result string, hr error) {
+	ctx, span := trace.StartSpan(ctx, "HcsCreateComputeSystem")
+	defer span.End()
+	defer func() {
+		if result != "" {
+			span.AddAttributes(trace.StringAttribute("result", result))
+		}
+		if hr != errVmcomputeOperationPending {
+			oc.SetSpanStatus(span, hr)
+		}
+	}()
+	span.AddAttributes(
+		trace.StringAttribute("id", id),
+		trace.StringAttribute("configuration", configuration))
+
+	return computeSystem, result, execute(ctx, timeout.SystemCreate, func() error {
+		var resultp *uint16
+		err := hcsCreateComputeSystem(id, configuration, identity, &computeSystem, &resultp)
+		if resultp != nil {
+			result = interop.ConvertAndFreeCoTaskMemString(resultp)
+		}
+		return err
+	})
+}
+
+func HcsOpenComputeSystem(ctx gcontext.Context, id string) (computeSystem HcsSystem, result string, hr error) {
+	ctx, span := trace.StartSpan(ctx, "HcsOpenComputeSystem")
+	defer span.End()
+	defer func() {
+		if result != "" {
+			span.AddAttributes(trace.StringAttribute("result", result))
+		}
+		oc.SetSpanStatus(span, hr)
+	}()
+
+	return computeSystem, result, execute(ctx, timeout.SyscallWatcher, func() error {
+		var resultp *uint16
+		err := hcsOpenComputeSystem(id, &computeSystem, &resultp)
+		if resultp != nil {
+			result = interop.ConvertAndFreeCoTaskMemString(resultp)
+		}
+		return err
+	})
+}
+
+func HcsCloseComputeSystem(ctx gcontext.Context, computeSystem HcsSystem) (hr error) {
+	ctx, span := trace.StartSpan(ctx, "HcsCloseComputeSystem")
+	defer span.End()
+	defer func() { oc.SetSpanStatus(span, hr) }()
+
+	return execute(ctx, timeout.SyscallWatcher, func() error {
+		return hcsCloseComputeSystem(computeSystem)
+	})
+}
+
+func HcsStartComputeSystem(ctx gcontext.Context, computeSystem HcsSystem, options string) (result string, hr error) {
+	ctx, span := trace.StartSpan(ctx, "HcsStartComputeSystem")
+	defer span.End()
+	defer func() {
+		if result != "" {
+			span.AddAttributes(trace.StringAttribute("result", result))
+		}
+		if hr != errVmcomputeOperationPending {
+			oc.SetSpanStatus(span, hr)
+		}
+	}()
+	span.AddAttributes(trace.StringAttribute("options", options))
+
+	return result, execute(ctx, timeout.SystemStart, func() error {
+		var resultp *uint16
+		err := hcsStartComputeSystem(computeSystem, options, &resultp)
+		if resultp != nil {
+			result = interop.ConvertAndFreeCoTaskMemString(resultp)
+		}
+		return err
+	})
+}
+
+func HcsShutdownComputeSystem(ctx gcontext.Context, computeSystem HcsSystem, options string) (result string, hr error) {
+	ctx, span := trace.StartSpan(ctx, "HcsShutdownComputeSystem")
+	defer span.End()
+	defer func() {
+		if result != "" {
+			span.AddAttributes(trace.StringAttribute("result", result))
+		}
+		oc.SetSpanStatus(span, hr)
+	}()
+	span.AddAttributes(trace.StringAttribute("options", options))
+
+	return result, execute(ctx, timeout.SyscallWatcher, func() error {
+		var resultp *uint16
+		err := hcsShutdownComputeSystem(computeSystem, options, &resultp)
+		if resultp != nil {
+			result = interop.ConvertAndFreeCoTaskMemString(resultp)
+		}
+		return err
+	})
+}
+
+func HcsTerminateComputeSystem(ctx gcontext.Context, computeSystem HcsSystem, options string) (result string, hr error) {
+	ctx, span := trace.StartSpan(ctx, "HcsTerminateComputeSystem")
+	defer span.End()
+	defer func() {
+		if result != "" {
+			span.AddAttributes(trace.StringAttribute("result", result))
+		}
+		if hr != errVmcomputeOperationPending {
+			oc.SetSpanStatus(span, hr)
+		}
+	}()
+	span.AddAttributes(trace.StringAttribute("options", options))
+
+	return result, execute(ctx, timeout.SyscallWatcher, func() error {
+		var resultp *uint16
+		err := hcsTerminateComputeSystem(computeSystem, options, &resultp)
+		if resultp != nil {
+			result = interop.ConvertAndFreeCoTaskMemString(resultp)
+		}
+		return err
+	})
+}
+
+func HcsPauseComputeSystem(ctx gcontext.Context, computeSystem HcsSystem, options string) (result string, hr error) {
+	ctx, span := trace.StartSpan(ctx, "HcsPauseComputeSystem")
+	defer span.End()
+	defer func() {
+		if result != "" {
+			span.AddAttributes(trace.StringAttribute("result", result))
+		}
+		if hr != errVmcomputeOperationPending {
+			oc.SetSpanStatus(span, hr)
+		}
+	}()
+	span.AddAttributes(trace.StringAttribute("options", options))
+
+	return result, execute(ctx, timeout.SystemPause, func() error {
+		var resultp *uint16
+		err := hcsPauseComputeSystem(computeSystem, options, &resultp)
+		if resultp != nil {
+			result = interop.ConvertAndFreeCoTaskMemString(resultp)
+		}
+		return err
+	})
+}
+
+func HcsResumeComputeSystem(ctx gcontext.Context, computeSystem HcsSystem, options string) (result string, hr error) {
+	ctx, span := trace.StartSpan(ctx, "HcsResumeComputeSystem")
+	defer span.End()
+	defer func() {
+		if result != "" {
+			span.AddAttributes(trace.StringAttribute("result", result))
+		}
+		if hr != errVmcomputeOperationPending {
+			oc.SetSpanStatus(span, hr)
+		}
+	}()
+	span.AddAttributes(trace.StringAttribute("options", options))
+
+	return result, execute(ctx, timeout.SystemResume, func() error {
+		var resultp *uint16
+		err := hcsResumeComputeSystem(computeSystem, options, &resultp)
+		if resultp != nil {
+			result = interop.ConvertAndFreeCoTaskMemString(resultp)
+		}
+		return err
+	})
+}
+
+func HcsGetComputeSystemProperties(ctx gcontext.Context, computeSystem HcsSystem, propertyQuery string) (properties, result string, hr error) {
+	ctx, span := trace.StartSpan(ctx, "HcsGetComputeSystemProperties")
+	defer span.End()
+	defer func() {
+		if result != "" {
+			span.AddAttributes(trace.StringAttribute("result", result))
+		}
+		oc.SetSpanStatus(span, hr)
+	}()
+	span.AddAttributes(trace.StringAttribute("propertyQuery", propertyQuery))
+
+	return properties, result, execute(ctx, timeout.SyscallWatcher, func() error {
+		var (
+			propertiesp *uint16
+			resultp     *uint16
+		)
+		err := hcsGetComputeSystemProperties(computeSystem, propertyQuery, &propertiesp, &resultp)
+		if propertiesp != nil {
+			properties = interop.ConvertAndFreeCoTaskMemString(propertiesp)
+		}
+		if resultp != nil {
+			result = interop.ConvertAndFreeCoTaskMemString(resultp)
+		}
+		return err
+	})
+}
+
+func HcsModifyComputeSystem(ctx gcontext.Context, computeSystem HcsSystem, configuration string) (result string, hr error) {
+	ctx, span := trace.StartSpan(ctx, "HcsModifyComputeSystem")
+	defer span.End()
+	defer func() {
+		if result != "" {
+			span.AddAttributes(trace.StringAttribute("result", result))
+		}
+		oc.SetSpanStatus(span, hr)
+	}()
+	span.AddAttributes(trace.StringAttribute("configuration", configuration))
+
+	return result, execute(ctx, timeout.SyscallWatcher, func() error {
+		var resultp *uint16
+		err := hcsModifyComputeSystem(computeSystem, configuration, &resultp)
+		if resultp != nil {
+			result = interop.ConvertAndFreeCoTaskMemString(resultp)
+		}
+		return err
+	})
+}
+
+func HcsRegisterComputeSystemCallback(ctx gcontext.Context, computeSystem HcsSystem, callback uintptr, context uintptr) (callbackHandle HcsCallback, hr error) {
+	ctx, span := trace.StartSpan(ctx, "HcsRegisterComputeSystemCallback")
+	defer span.End()
+	defer func() { oc.SetSpanStatus(span, hr) }()
+
+	return callbackHandle, execute(ctx, timeout.SyscallWatcher, func() error {
+		return hcsRegisterComputeSystemCallback(computeSystem, callback, context, &callbackHandle)
+	})
+}
+
+func HcsUnregisterComputeSystemCallback(ctx gcontext.Context, callbackHandle HcsCallback) (hr error) {
+	ctx, span := trace.StartSpan(ctx, "HcsUnregisterComputeSystemCallback")
+	defer span.End()
+	defer func() { oc.SetSpanStatus(span, hr) }()
+
+	return execute(ctx, timeout.SyscallWatcher, func() error {
+		return hcsUnregisterComputeSystemCallback(callbackHandle)
+	})
+}
+
+func HcsCreateProcess(ctx gcontext.Context, computeSystem HcsSystem, processParameters string) (processInformation HcsProcessInformation, process HcsProcess, result string, hr error) {
+	ctx, span := trace.StartSpan(ctx, "HcsCreateProcess")
+	defer span.End()
+	defer func() {
+		if result != "" {
+			span.AddAttributes(trace.StringAttribute("result", result))
+		}
+		oc.SetSpanStatus(span, hr)
+	}()
+	span.AddAttributes(trace.StringAttribute("processParameters", processParameters))
+
+	return processInformation, process, result, execute(ctx, timeout.SyscallWatcher, func() error {
+		var resultp *uint16
+		err := hcsCreateProcess(computeSystem, processParameters, &processInformation, &process, &resultp)
+		if resultp != nil {
+			result = interop.ConvertAndFreeCoTaskMemString(resultp)
+		}
+		return err
+	})
+}
+
+func HcsOpenProcess(ctx gcontext.Context, computeSystem HcsSystem, pid uint32) (process HcsProcess, result string, hr error) {
+	ctx, span := trace.StartSpan(ctx, "HcsOpenProcess")
+	defer span.End()
+	defer func() {
+		if result != "" {
+			span.AddAttributes(trace.StringAttribute("result", result))
+		}
+		oc.SetSpanStatus(span, hr)
+	}()
+	span.AddAttributes(trace.Int64Attribute("pid", int64(pid)))
+
+	return process, result, execute(ctx, timeout.SyscallWatcher, func() error {
+		var resultp *uint16
+		err := hcsOpenProcess(computeSystem, pid, &process, &resultp)
+		if resultp != nil {
+			result = interop.ConvertAndFreeCoTaskMemString(resultp)
+		}
+		return err
+	})
+}
+
+func HcsCloseProcess(ctx gcontext.Context, process HcsProcess) (hr error) {
+	ctx, span := trace.StartSpan(ctx, "HcsCloseProcess")
+	defer span.End()
+	defer func() { oc.SetSpanStatus(span, hr) }()
+
+	return execute(ctx, timeout.SyscallWatcher, func() error {
+		return hcsCloseProcess(process)
+	})
+}
+
+func HcsTerminateProcess(ctx gcontext.Context, process HcsProcess) (result string, hr error) {
+	ctx, span := trace.StartSpan(ctx, "HcsTerminateProcess")
+	defer span.End()
+	defer func() {
+		if result != "" {
+			span.AddAttributes(trace.StringAttribute("result", result))
+		}
+		oc.SetSpanStatus(span, hr)
+	}()
+
+	return result, execute(ctx, timeout.SyscallWatcher, func() error {
+		var resultp *uint16
+		err := hcsTerminateProcess(process, &resultp)
+		if resultp != nil {
+			result = interop.ConvertAndFreeCoTaskMemString(resultp)
+		}
+		return err
+	})
+}
+
+func HcsSignalProcess(ctx gcontext.Context, process HcsProcess, options string) (result string, hr error) {
+	ctx, span := trace.StartSpan(ctx, "HcsSignalProcess")
+	defer span.End()
+	defer func() {
+		if result != "" {
+			span.AddAttributes(trace.StringAttribute("result", result))
+		}
+		oc.SetSpanStatus(span, hr)
+	}()
+	span.AddAttributes(trace.StringAttribute("options", options))
+
+	return result, execute(ctx, timeout.SyscallWatcher, func() error {
+		var resultp *uint16
+		err := hcsSignalProcess(process, options, &resultp)
+		if resultp != nil {
+			result = interop.ConvertAndFreeCoTaskMemString(resultp)
+		}
+		return err
+	})
+}
+
+func HcsGetProcessInfo(ctx gcontext.Context, process HcsProcess) (processInformation HcsProcessInformation, result string, hr error) {
+	ctx, span := trace.StartSpan(ctx, "HcsGetProcessInfo")
+	defer span.End()
+	defer func() {
+		if result != "" {
+			span.AddAttributes(trace.StringAttribute("result", result))
+		}
+		oc.SetSpanStatus(span, hr)
+	}()
+
+	return processInformation, result, execute(ctx, timeout.SyscallWatcher, func() error {
+		var resultp *uint16
+		err := hcsGetProcessInfo(process, &processInformation, &resultp)
+		if resultp != nil {
+			result = interop.ConvertAndFreeCoTaskMemString(resultp)
+		}
+		return err
+	})
+}
+
+func HcsGetProcessProperties(ctx gcontext.Context, process HcsProcess) (processProperties, result string, hr error) {
+	ctx, span := trace.StartSpan(ctx, "HcsGetProcessProperties")
+	defer span.End()
+	defer func() {
+		if result != "" {
+			span.AddAttributes(trace.StringAttribute("result", result))
+		}
+		oc.SetSpanStatus(span, hr)
+	}()
+
+	return processProperties, result, execute(ctx, timeout.SyscallWatcher, func() error {
+		var (
+			processPropertiesp *uint16
+			resultp            *uint16
+		)
+		err := hcsGetProcessProperties(process, &processPropertiesp, &resultp)
+		if processPropertiesp != nil {
+			processProperties = interop.ConvertAndFreeCoTaskMemString(processPropertiesp)
+		}
+		if resultp != nil {
+			result = interop.ConvertAndFreeCoTaskMemString(resultp)
+		}
+		return err
+	})
+}
+
+func HcsModifyProcess(ctx gcontext.Context, process HcsProcess, settings string) (result string, hr error) {
+	ctx, span := trace.StartSpan(ctx, "HcsModifyProcess")
+	defer span.End()
+	defer func() {
+		if result != "" {
+			span.AddAttributes(trace.StringAttribute("result", result))
+		}
+		oc.SetSpanStatus(span, hr)
+	}()
+	span.AddAttributes(trace.StringAttribute("settings", settings))
+
+	return result, execute(ctx, timeout.SyscallWatcher, func() error {
+		var resultp *uint16
+		err := hcsModifyProcess(process, settings, &resultp)
+		if resultp != nil {
+			result = interop.ConvertAndFreeCoTaskMemString(resultp)
+		}
+		return err
+	})
+}
+
+func HcsGetServiceProperties(ctx gcontext.Context, propertyQuery string) (properties, result string, hr error) {
+	ctx, span := trace.StartSpan(ctx, "HcsGetServiceProperties")
+	defer span.End()
+	defer func() {
+		if result != "" {
+			span.AddAttributes(trace.StringAttribute("result", result))
+		}
+		oc.SetSpanStatus(span, hr)
+	}()
+	span.AddAttributes(trace.StringAttribute("propertyQuery", propertyQuery))
+
+	return properties, result, execute(ctx, timeout.SyscallWatcher, func() error {
+		var (
+			propertiesp *uint16
+			resultp     *uint16
+		)
+		err := hcsGetServiceProperties(propertyQuery, &propertiesp, &resultp)
+		if propertiesp != nil {
+			properties = interop.ConvertAndFreeCoTaskMemString(propertiesp)
+		}
+		if resultp != nil {
+			result = interop.ConvertAndFreeCoTaskMemString(resultp)
+		}
+		return err
+	})
+}
+
+func HcsRegisterProcessCallback(ctx gcontext.Context, process HcsProcess, callback uintptr, context uintptr) (callbackHandle HcsCallback, hr error) {
+	ctx, span := trace.StartSpan(ctx, "HcsRegisterProcessCallback")
+	defer span.End()
+	defer func() { oc.SetSpanStatus(span, hr) }()
+
+	return callbackHandle, execute(ctx, timeout.SyscallWatcher, func() error {
+		return hcsRegisterProcessCallback(process, callback, context, &callbackHandle)
+	})
+}
+
+func HcsUnregisterProcessCallback(ctx gcontext.Context, callbackHandle HcsCallback) (hr error) {
+	ctx, span := trace.StartSpan(ctx, "HcsUnregisterProcessCallback")
+	defer span.End()
+	defer func() { oc.SetSpanStatus(span, hr) }()
+
+	return execute(ctx, timeout.SyscallWatcher, func() error {
+		return hcsUnregisterProcessCallback(callbackHandle)
+	})
+}

vendor/github.com/Microsoft/hcsshim/internal/vmcompute/zsyscall_windows.go

@@ -1,6 +1,6 @@
 // Code generated mksyscall_windows.exe DO NOT EDIT
 
-package hcs
+package vmcompute
 
 import (
 	"syscall"
@@ -56,13 +56,13 @@ var (
 	procHcsOpenProcess                     = modvmcompute.NewProc("HcsOpenProcess")
 	procHcsCloseProcess                    = modvmcompute.NewProc("HcsCloseProcess")
 	procHcsTerminateProcess                = modvmcompute.NewProc("HcsTerminateProcess")
-
+	procHcsSignalProcess                   = modvmcompute.NewProc("HcsSignalProcess")
-	procHcsGetProcessInfo            = modvmcompute.NewProc("HcsGetProcessInfo")
+	procHcsGetProcessInfo                  = modvmcompute.NewProc("HcsGetProcessInfo")
-	procHcsGetProcessProperties      = modvmcompute.NewProc("HcsGetProcessProperties")
+	procHcsGetProcessProperties            = modvmcompute.NewProc("HcsGetProcessProperties")
-	procHcsModifyProcess             = modvmcompute.NewProc("HcsModifyProcess")
+	procHcsModifyProcess                   = modvmcompute.NewProc("HcsModifyProcess")
-	procHcsGetServiceProperties      = modvmcompute.NewProc("HcsGetServiceProperties")
+	procHcsGetServiceProperties            = modvmcompute.NewProc("HcsGetServiceProperties")
-	procHcsRegisterProcessCallback   = modvmcompute.NewProc("HcsRegisterProcessCallback")
+	procHcsRegisterProcessCallback         = modvmcompute.NewProc("HcsRegisterProcessCallback")
-	procHcsUnregisterProcessCallback = modvmcompute.NewProc("HcsUnregisterProcessCallback")
+	procHcsUnregisterProcessCallback       = modvmcompute.NewProc("HcsUnregisterProcessCallback")
 )
 
 func hcsEnumerateComputeSystems(query string, computeSystems **uint16, result **uint16) (hr error) {
@@ -88,7 +88,7 @@ func _hcsEnumerateComputeSystems(query *uint16, computeSystems **uint16, result
 	return
 }
 
-func hcsCreateComputeSystem(id string, configuration string, identity syscall.Handle, computeSystem *hcsSystem, result **uint16) (hr error) {
+func hcsCreateComputeSystem(id string, configuration string, identity syscall.Handle, computeSystem *HcsSystem, result **uint16) (hr error) {
 	var _p0 *uint16
 	_p0, hr = syscall.UTF16PtrFromString(id)
 	if hr != nil {
@@ -102,7 +102,7 @@ func hcsCreateComputeSystem(id string, configuration string, identity syscall.Ha
 	return _hcsCreateComputeSystem(_p0, _p1, identity, computeSystem, result)
 }
 
-func _hcsCreateComputeSystem(id *uint16, configuration *uint16, identity syscall.Handle, computeSystem *hcsSystem, result **uint16) (hr error) {
+func _hcsCreateComputeSystem(id *uint16, configuration *uint16, identity syscall.Handle, computeSystem *HcsSystem, result **uint16) (hr error) {
 	if hr = procHcsCreateComputeSystem.Find(); hr != nil {
 		return
 	}
@@ -116,7 +116,7 @@ func _hcsCreateComputeSystem(id *uint16, configuration *uint16, identity syscall
 	return
 }
 
-func hcsOpenComputeSystem(id string, computeSystem *hcsSystem, result **uint16) (hr error) {
+func hcsOpenComputeSystem(id string, computeSystem *HcsSystem, result **uint16) (hr error) {
 	var _p0 *uint16
 	_p0, hr = syscall.UTF16PtrFromString(id)
 	if hr != nil {
@@ -125,7 +125,7 @@ func hcsOpenComputeSystem(id string, computeSystem *hcsSystem, result **uint16)
 	return _hcsOpenComputeSystem(_p0, computeSystem, result)
 }
 
-func _hcsOpenComputeSystem(id *uint16, computeSystem *hcsSystem, result **uint16) (hr error) {
+func _hcsOpenComputeSystem(id *uint16, computeSystem *HcsSystem, result **uint16) (hr error) {
 	if hr = procHcsOpenComputeSystem.Find(); hr != nil {
 		return
 	}
@@ -139,7 +139,7 @@ func _hcsOpenComputeSystem(id *uint16, computeSystem *hcsSystem, result **uint16
 	return
 }
 
-func hcsCloseComputeSystem(computeSystem hcsSystem) (hr error) {
+func hcsCloseComputeSystem(computeSystem HcsSystem) (hr error) {
 	if hr = procHcsCloseComputeSystem.Find(); hr != nil {
 		return
 	}
@@ -153,7 +153,7 @@ func hcsCloseComputeSystem(computeSystem hcsSystem) (hr error) {
 	return
 }
 
-func hcsStartComputeSystem(computeSystem hcsSystem, options string, result **uint16) (hr error) {
+func hcsStartComputeSystem(computeSystem HcsSystem, options string, result **uint16) (hr error) {
 	var _p0 *uint16
 	_p0, hr = syscall.UTF16PtrFromString(options)
 	if hr != nil {
@@ -162,7 +162,7 @@ func hcsStartComputeSystem(computeSystem hcsSystem, options string, result **uin
 	return _hcsStartComputeSystem(computeSystem, _p0, result)
 }
 
-func _hcsStartComputeSystem(computeSystem hcsSystem, options *uint16, result **uint16) (hr error) {
+func _hcsStartComputeSystem(computeSystem HcsSystem, options *uint16, result **uint16) (hr error) {
 	if hr = procHcsStartComputeSystem.Find(); hr != nil {
 		return
 	}
@@ -176,7 +176,7 @@ func _hcsStartComputeSystem(computeSystem hcsSystem, options *uint16, result **u
 	return
 }
 
-func hcsShutdownComputeSystem(computeSystem hcsSystem, options string, result **uint16) (hr error) {
+func hcsShutdownComputeSystem(computeSystem HcsSystem, options string, result **uint16) (hr error) {
 	var _p0 *uint16
 	_p0, hr = syscall.UTF16PtrFromString(options)
 	if hr != nil {
@@ -185,7 +185,7 @@ func hcsShutdownComputeSystem(computeSystem hcsSystem, options string, result **
 	return _hcsShutdownComputeSystem(computeSystem, _p0, result)
 }
 
-func _hcsShutdownComputeSystem(computeSystem hcsSystem, options *uint16, result **uint16) (hr error) {
+func _hcsShutdownComputeSystem(computeSystem HcsSystem, options *uint16, result **uint16) (hr error) {
 	if hr = procHcsShutdownComputeSystem.Find(); hr != nil {
 		return
 	}
@@ -199,7 +199,7 @@ func _hcsShutdownComputeSystem(computeSystem hcsSystem, options *uint16, result
 	return
 }
 
-func hcsTerminateComputeSystem(computeSystem hcsSystem, options string, result **uint16) (hr error) {
+func hcsTerminateComputeSystem(computeSystem HcsSystem, options string, result **uint16) (hr error) {
 	var _p0 *uint16
 	_p0, hr = syscall.UTF16PtrFromString(options)
 	if hr != nil {
@@ -208,7 +208,7 @@ func hcsTerminateComputeSystem(computeSystem hcsSystem, options string, result *
 	return _hcsTerminateComputeSystem(computeSystem, _p0, result)
 }
 
-func _hcsTerminateComputeSystem(computeSystem hcsSystem, options *uint16, result **uint16) (hr error) {
+func _hcsTerminateComputeSystem(computeSystem HcsSystem, options *uint16, result **uint16) (hr error) {
 	if hr = procHcsTerminateComputeSystem.Find(); hr != nil {
 		return
 	}
@@ -222,7 +222,7 @@ func _hcsTerminateComputeSystem(computeSystem hcsSystem, options *uint16, result
 	return
 }
 
-func hcsPauseComputeSystem(computeSystem hcsSystem, options string, result **uint16) (hr error) {
+func hcsPauseComputeSystem(computeSystem HcsSystem, options string, result **uint16) (hr error) {
 	var _p0 *uint16
 	_p0, hr = syscall.UTF16PtrFromString(options)
 	if hr != nil {
@@ -231,7 +231,7 @@ func hcsPauseComputeSystem(computeSystem hcsSystem, options string, result **uin
 	return _hcsPauseComputeSystem(computeSystem, _p0, result)
 }
 
-func _hcsPauseComputeSystem(computeSystem hcsSystem, options *uint16, result **uint16) (hr error) {
+func _hcsPauseComputeSystem(computeSystem HcsSystem, options *uint16, result **uint16) (hr error) {
 	if hr = procHcsPauseComputeSystem.Find(); hr != nil {
 		return
 	}
@@ -245,7 +245,7 @@ func _hcsPauseComputeSystem(computeSystem hcsSystem, options *uint16, result **u
 	return
 }
 
-func hcsResumeComputeSystem(computeSystem hcsSystem, options string, result **uint16) (hr error) {
+func hcsResumeComputeSystem(computeSystem HcsSystem, options string, result **uint16) (hr error) {
 	var _p0 *uint16
 	_p0, hr = syscall.UTF16PtrFromString(options)
 	if hr != nil {
@@ -254,7 +254,7 @@ func hcsResumeComputeSystem(computeSystem hcsSystem, options string, result **ui
 	return _hcsResumeComputeSystem(computeSystem, _p0, result)
 }
 
-func _hcsResumeComputeSystem(computeSystem hcsSystem, options *uint16, result **uint16) (hr error) {
+func _hcsResumeComputeSystem(computeSystem HcsSystem, options *uint16, result **uint16) (hr error) {
 	if hr = procHcsResumeComputeSystem.Find(); hr != nil {
 		return
 	}
@@ -268,7 +268,7 @@ func _hcsResumeComputeSystem(computeSystem hcsSystem, options *uint16, result **
 	return
 }
 
-func hcsGetComputeSystemProperties(computeSystem hcsSystem, propertyQuery string, properties **uint16, result **uint16) (hr error) {
+func hcsGetComputeSystemProperties(computeSystem HcsSystem, propertyQuery string, properties **uint16, result **uint16) (hr error) {
 	var _p0 *uint16
 	_p0, hr = syscall.UTF16PtrFromString(propertyQuery)
 	if hr != nil {
@@ -277,7 +277,7 @@ func hcsGetComputeSystemProperties(computeSystem hcsSystem, propertyQuery string
 	return _hcsGetComputeSystemProperties(computeSystem, _p0, properties, result)
 }
 
-func _hcsGetComputeSystemProperties(computeSystem hcsSystem, propertyQuery *uint16, properties **uint16, result **uint16) (hr error) {
+func _hcsGetComputeSystemProperties(computeSystem HcsSystem, propertyQuery *uint16, properties **uint16, result **uint16) (hr error) {
 	if hr = procHcsGetComputeSystemProperties.Find(); hr != nil {
 		return
 	}
@@ -291,7 +291,7 @@ func _hcsGetComputeSystemProperties(computeSystem hcsSystem, propertyQuery *uint
 	return
 }
 
-func hcsModifyComputeSystem(computeSystem hcsSystem, configuration string, result **uint16) (hr error) {
+func hcsModifyComputeSystem(computeSystem HcsSystem, configuration string, result **uint16) (hr error) {
 	var _p0 *uint16
 	_p0, hr = syscall.UTF16PtrFromString(configuration)
 	if hr != nil {
@@ -300,7 +300,7 @@ func hcsModifyComputeSystem(computeSystem hcsSystem, configuration string, resul
 	return _hcsModifyComputeSystem(computeSystem, _p0, result)
 }
 
-func _hcsModifyComputeSystem(computeSystem hcsSystem, configuration *uint16, result **uint16) (hr error) {
+func _hcsModifyComputeSystem(computeSystem HcsSystem, configuration *uint16, result **uint16) (hr error) {
 	if hr = procHcsModifyComputeSystem.Find(); hr != nil {
 		return
 	}
@@ -314,7 +314,7 @@ func _hcsModifyComputeSystem(computeSystem hcsSystem, configuration *uint16, res
 	return
 }
 
-func hcsRegisterComputeSystemCallback(computeSystem hcsSystem, callback uintptr, context uintptr, callbackHandle *hcsCallback) (hr error) {
+func hcsRegisterComputeSystemCallback(computeSystem HcsSystem, callback uintptr, context uintptr, callbackHandle *HcsCallback) (hr error) {
 	if hr = procHcsRegisterComputeSystemCallback.Find(); hr != nil {
 		return
 	}
@@ -328,7 +328,7 @@ func hcsRegisterComputeSystemCallback(computeSystem hcsSystem, callback uintptr,
 	return
 }
 
-func hcsUnregisterComputeSystemCallback(callbackHandle hcsCallback) (hr error) {
+func hcsUnregisterComputeSystemCallback(callbackHandle HcsCallback) (hr error) {
 	if hr = procHcsUnregisterComputeSystemCallback.Find(); hr != nil {
 		return
 	}
@@ -342,7 +342,7 @@ func hcsUnregisterComputeSystemCallback(callbackHandle hcsCallback) (hr error) {
 	return
 }
 
-func hcsCreateProcess(computeSystem hcsSystem, processParameters string, processInformation *hcsProcessInformation, process *hcsProcess, result **uint16) (hr error) {
+func hcsCreateProcess(computeSystem HcsSystem, processParameters string, processInformation *HcsProcessInformation, process *HcsProcess, result **uint16) (hr error) {
 	var _p0 *uint16
 	_p0, hr = syscall.UTF16PtrFromString(processParameters)
 	if hr != nil {
@@ -351,7 +351,7 @@ func hcsCreateProcess(computeSystem hcsSystem, processParameters string, process
 	return _hcsCreateProcess(computeSystem, _p0, processInformation, process, result)
 }
 
-func _hcsCreateProcess(computeSystem hcsSystem, processParameters *uint16, processInformation *hcsProcessInformation, process *hcsProcess, result **uint16) (hr error) {
+func _hcsCreateProcess(computeSystem HcsSystem, processParameters *uint16, processInformation *HcsProcessInformation, process *HcsProcess, result **uint16) (hr error) {
 	if hr = procHcsCreateProcess.Find(); hr != nil {
 		return
 	}
@@ -365,7 +365,7 @@ func _hcsCreateProcess(computeSystem hcsSystem, processParameters *uint16, proce
 	return
 }
 
-func hcsOpenProcess(computeSystem hcsSystem, pid uint32, process *hcsProcess, result **uint16) (hr error) {
+func hcsOpenProcess(computeSystem HcsSystem, pid uint32, process *HcsProcess, result **uint16) (hr error) {
 	if hr = procHcsOpenProcess.Find(); hr != nil {
 		return
 	}
@@ -379,7 +379,7 @@ func hcsOpenProcess(computeSystem hcsSystem, pid uint32, process *hcsProcess, re
 	return
 }
 
-func hcsCloseProcess(process hcsProcess) (hr error) {
+func hcsCloseProcess(process HcsProcess) (hr error) {
 	if hr = procHcsCloseProcess.Find(); hr != nil {
 		return
 	}
@@ -393,7 +393,7 @@ func hcsCloseProcess(process hcsProcess) (hr error) {
 	return
 }
 
-func hcsTerminateProcess(process hcsProcess, result **uint16) (hr error) {
+func hcsTerminateProcess(process HcsProcess, result **uint16) (hr error) {
 	if hr = procHcsTerminateProcess.Find(); hr != nil {
 		return
 	}
@@ -407,7 +407,7 @@ func hcsTerminateProcess(process hcsProcess, result **uint16) (hr error) {
 	return
 }
 
-func hcsSignalProcess(process hcsProcess, options string, result **uint16) (hr error) {
+func hcsSignalProcess(process HcsProcess, options string, result **uint16) (hr error) {
 	var _p0 *uint16
 	_p0, hr = syscall.UTF16PtrFromString(options)
 	if hr != nil {
@@ -416,11 +416,11 @@ func hcsSignalProcess(process hcsProcess, options string, result **uint16) (hr e
 	return _hcsSignalProcess(process, _p0, result)
 }
 
-func _hcsSignalProcess(process hcsProcess, options *uint16, result **uint16) (hr error) {
+func _hcsSignalProcess(process HcsProcess, options *uint16, result **uint16) (hr error) {
-	if hr = procHcsTerminateProcess.Find(); hr != nil {
+	if hr = procHcsSignalProcess.Find(); hr != nil {
 		return
 	}
-	r0, _, _ := syscall.Syscall(procHcsTerminateProcess.Addr(), 3, uintptr(process), uintptr(unsafe.Pointer(options)), uintptr(unsafe.Pointer(result)))
+	r0, _, _ := syscall.Syscall(procHcsSignalProcess.Addr(), 3, uintptr(process), uintptr(unsafe.Pointer(options)), uintptr(unsafe.Pointer(result)))
 	if int32(r0) < 0 {
 		if r0&0x1fff0000 == 0x00070000 {
 			r0 &= 0xffff
@@ -430,7 +430,7 @@ func _hcsSignalProcess(process hcsProcess, options *uint16, result **uint16) (hr
 	return
 }
 
-func hcsGetProcessInfo(process hcsProcess, processInformation *hcsProcessInformation, result **uint16) (hr error) {
+func hcsGetProcessInfo(process HcsProcess, processInformation *HcsProcessInformation, result **uint16) (hr error) {
 	if hr = procHcsGetProcessInfo.Find(); hr != nil {
 		return
 	}
@@ -444,7 +444,7 @@ func hcsGetProcessInfo(process hcsProcess, processInformation *hcsProcessInforma
 	return
 }
 
-func hcsGetProcessProperties(process hcsProcess, processProperties **uint16, result **uint16) (hr error) {
+func hcsGetProcessProperties(process HcsProcess, processProperties **uint16, result **uint16) (hr error) {
 	if hr = procHcsGetProcessProperties.Find(); hr != nil {
 		return
 	}
@@ -458,7 +458,7 @@ func hcsGetProcessProperties(process hcsProcess, processProperties **uint16, res
 	return
 }
 
-func hcsModifyProcess(process hcsProcess, settings string, result **uint16) (hr error) {
+func hcsModifyProcess(process HcsProcess, settings string, result **uint16) (hr error) {
 	var _p0 *uint16
 	_p0, hr = syscall.UTF16PtrFromString(settings)
 	if hr != nil {
@@ -467,7 +467,7 @@ func hcsModifyProcess(process hcsProcess, settings string, result **uint16) (hr
 	return _hcsModifyProcess(process, _p0, result)
 }
 
-func _hcsModifyProcess(process hcsProcess, settings *uint16, result **uint16) (hr error) {
+func _hcsModifyProcess(process HcsProcess, settings *uint16, result **uint16) (hr error) {
 	if hr = procHcsModifyProcess.Find(); hr != nil {
 		return
 	}
@@ -504,7 +504,7 @@ func _hcsGetServiceProperties(propertyQuery *uint16, properties **uint16, result
 	return
 }
 
-func hcsRegisterProcessCallback(process hcsProcess, callback uintptr, context uintptr, callbackHandle *hcsCallback) (hr error) {
+func hcsRegisterProcessCallback(process HcsProcess, callback uintptr, context uintptr, callbackHandle *HcsCallback) (hr error) {
 	if hr = procHcsRegisterProcessCallback.Find(); hr != nil {
 		return
 	}
@@ -518,7 +518,7 @@ func hcsRegisterProcessCallback(process hcsProcess, callback uintptr, context ui
 	return
 }
 
-func hcsUnregisterProcessCallback(callbackHandle hcsCallback) (hr error) {
+func hcsUnregisterProcessCallback(callbackHandle HcsCallback) (hr error) {
 	if hr = procHcsUnregisterProcessCallback.Find(); hr != nil {
 		return
 	}

vendor/github.com/Microsoft/hcsshim/internal/wclayer/layerid.go

@@ -3,7 +3,7 @@ package wclayer
 import (
 	"path/filepath"
 
-	"github.com/Microsoft/hcsshim/internal/guid"
+	"github.com/Microsoft/go-winio/pkg/guid"
 )
 
 // LayerID returns the layer ID of a layer on disk.

vendor/github.com/Microsoft/hcsshim/internal/wclayer/layerutils.go

@@ -6,7 +6,7 @@ package wclayer
 import (
 	"syscall"
 
-	"github.com/Microsoft/hcsshim/internal/guid"
+	"github.com/Microsoft/go-winio/pkg/guid"
 	"github.com/sirupsen/logrus"
 )
 

vendor/github.com/Microsoft/hcsshim/internal/wclayer/nametoguid.go

@@ -1,7 +1,7 @@
 package wclayer
 
 import (
-	"github.com/Microsoft/hcsshim/internal/guid"
+	"github.com/Microsoft/go-winio/pkg/guid"
 	"github.com/Microsoft/hcsshim/internal/hcserror"
 	"github.com/sirupsen/logrus"
 )

vendor/github.com/Microsoft/hcsshim/internal/wclayer/wclayer.go

@@ -1,6 +1,6 @@
 package wclayer
 
-import "github.com/Microsoft/hcsshim/internal/guid"
+import "github.com/Microsoft/go-winio/pkg/guid"
 
 //go:generate go run ../../mksyscall_windows.go -output zsyscall_windows.go wclayer.go
 

vendor/github.com/Microsoft/hcsshim/layer.go

@@ -4,7 +4,7 @@ import (
 	"crypto/sha1"
 	"path/filepath"
 
-	"github.com/Microsoft/hcsshim/internal/guid"
+	"github.com/Microsoft/go-winio/pkg/guid"
 	"github.com/Microsoft/hcsshim/internal/wclayer"
 )
 
@@ -77,7 +77,7 @@ type GUID [16]byte
 
 func NameToGuid(name string) (id GUID, err error) {
 	g, err := wclayer.NameToGuid(name)
-	return GUID(g), err
+	return g.ToWindowsArray(), err
 }
 
 func NewGUID(source string) *GUID {
@@ -88,7 +88,7 @@ func NewGUID(source string) *GUID {
 }
 
 func (g *GUID) ToString() string {
-	return (guid.GUID)(*g).String()
+	return guid.FromWindowsArray(*g).String()
 }
 
 type LayerReader = wclayer.LayerReader

vendor/github.com/Microsoft/hcsshim/pkg/go-runhcs/runhcs_create-scratch.go

@@ -2,9 +2,53 @@ package runhcs
 
 import (
 	"context"
+	"errors"
+	"path/filepath"
+	"strconv"
 )
 
 // CreateScratch creates a scratch vhdx at 'destpath' that is ext4 formatted.
 func (r *Runhcs) CreateScratch(context context.Context, destpath string) error {
-	return r.runOrError(r.command(context, "create-scratch", "--destpath", destpath))
+	return r.CreateScratchWithOpts(context, destpath, nil)
+}
+
+// CreateScratchOpts is the set of options that can be used with the
+// `CreateScratchWithOpts` command.
+type CreateScratchOpts struct {
+	// SizeGB is the size in GB of the scratch file to create.
+	SizeGB int
+	// CacheFile is the path to an existing `scratch.vhx` to copy. If
+	// `CacheFile` does not exit the scratch will be created.
+	CacheFile string
+}
+
+func (opt *CreateScratchOpts) args() ([]string, error) {
+	var out []string
+	if opt.SizeGB < 0 {
+		return nil, errors.New("sizeGB must be >= 0")
+	} else if opt.SizeGB > 0 {
+		out = append(out, "--sizeGB", strconv.Itoa(opt.SizeGB))
+	}
+	if opt.CacheFile != "" {
+		abs, err := filepath.Abs(opt.CacheFile)
+		if err != nil {
+			return nil, err
+		}
+		out = append(out, "--cache-path", abs)
+	}
+	return out, nil
+}
+
+// CreateScratchWithOpts creates a scratch vhdx at 'destpath' that is ext4
+// formatted based on `opts`.
+func (r *Runhcs) CreateScratchWithOpts(context context.Context, destpath string, opts *CreateScratchOpts) error {
+	args := []string{"create-scratch", "--destpath", destpath}
+	if opts != nil {
+		oargs, err := opts.args()
+		if err != nil {
+			return err
+		}
+		args = append(args, oargs...)
+	}
+	return r.runOrError(r.command(context, args...))
 }

vendor/github.com/Microsoft/hcsshim/process.go

@@ -1,7 +1,9 @@
 package hcsshim
 
 import (
+	"context"
 	"io"
+	"sync"
 	"time"
 
 	"github.com/Microsoft/hcsshim/internal/hcs"
@@ -9,7 +11,10 @@ import (
 
 // ContainerError is an error encountered in HCS
 type process struct {
-	p *hcs.Process
+	p        *hcs.Process
+	waitOnce sync.Once
+	waitCh   chan struct{}
+	waitErr  error
 }
 
 // Pid returns the process ID of the process within the container.
@@ -19,7 +24,14 @@ func (process *process) Pid() int {
 
 // Kill signals the process to terminate but does not wait for it to finish terminating.
 func (process *process) Kill() error {
-	return convertProcessError(process.p.Kill(), process)
+	found, err := process.p.Kill(context.Background())
+	if err != nil {
+		return convertProcessError(err, process)
+	}
+	if !found {
+		return &ProcessError{Process: process, Err: ErrElementNotFound, Operation: "hcsshim::Process::Kill"}
+	}
+	return nil
 }
 
 // Wait waits for the process to exit.
@@ -30,7 +42,21 @@ func (process *process) Wait() error {
 // WaitTimeout waits for the process to exit or the duration to elapse. It returns
 // false if timeout occurs.
 func (process *process) WaitTimeout(timeout time.Duration) error {
-	return convertProcessError(process.p.WaitTimeout(timeout), process)
+	process.waitOnce.Do(func() {
+		process.waitCh = make(chan struct{})
+		go func() {
+			process.waitErr = process.Wait()
+			close(process.waitCh)
+		}()
+	})
+	t := time.NewTimer(timeout)
+	defer t.Stop()
+	select {
+	case <-t.C:
+		return &ProcessError{Process: process, Err: ErrTimeout, Operation: "hcsshim::Process::Wait"}
+	case <-process.waitCh:
+		return process.waitErr
+	}
 }
 
 // ExitCode returns the exit code of the process. The process must have
@@ -45,14 +71,14 @@ func (process *process) ExitCode() (int, error) {
 
 // ResizeConsole resizes the console of the process.
 func (process *process) ResizeConsole(width, height uint16) error {
-	return convertProcessError(process.p.ResizeConsole(width, height), process)
+	return convertProcessError(process.p.ResizeConsole(context.Background(), width, height), process)
 }
 
 // Stdio returns the stdin, stdout, and stderr pipes, respectively. Closing
 // these pipes does not close the underlying pipes; it should be possible to
 // call this multiple times to get multiple interfaces.
 func (process *process) Stdio() (io.WriteCloser, io.ReadCloser, io.ReadCloser, error) {
-	stdin, stdout, stderr, err := process.p.Stdio()
+	stdin, stdout, stderr, err := process.p.StdioLegacy()
 	if err != nil {
 		err = convertProcessError(err, process)
 	}
@@ -62,7 +88,7 @@ func (process *process) Stdio() (io.WriteCloser, io.ReadCloser, io.ReadCloser, e
 // CloseStdin closes the write side of the stdin pipe so that the process is
 // notified on the read side that there is no more data in stdin.
 func (process *process) CloseStdin() error {
-	return convertProcessError(process.p.CloseStdin(), process)
+	return convertProcessError(process.p.CloseStdin(context.Background()), process)
 }
 
 // Close cleans up any state associated with the process but does not kill

vendor/github.com/Microsoft/hcsshim/vendor.conf

@@ -1,33 +0,0 @@
-github.com/blang/semver v3.1.0
-github.com/containerd/console c12b1e7919c14469339a5d38f2f8ed9b64a9de23
-github.com/containerd/containerd faec567304bbdf6864b1663d4f813641b5880a4a
-github.com/containerd/go-runc 5a6d9f37cfa36b15efba46dc7ea349fa9b7143c3
-github.com/containerd/ttrpc 2a805f71863501300ae1976d29f0454ae003e85a
-github.com/containerd/typeurl a93fcdb778cd272c6e9b3028b2f42d813e785d40
-github.com/gogo/protobuf v1.0.0
-github.com/golang/protobuf v1.1.0
-github.com/hashicorp/errwrap 7554cd9344cec97297fa6649b055a8c98c2a1e55
-github.com/hashicorp/go-multierror ed905158d87462226a13fe39ddf685ea65f1c11f
-github.com/konsorten/go-windows-terminal-sequences v1.0.1
-github.com/linuxkit/virtsock 8e79449dea0735c1c056d814934dd035734cc97c
-github.com/Microsoft/go-winio c599b533b43b1363d7d7c6cfda5ede70ed73ff13
-github.com/Microsoft/opengcs v0.3.9
-github.com/opencontainers/go-digest c9281466c8b2f606084ac71339773efd177436e7
-github.com/opencontainers/runc 12f6a991201fdb8f82579582d5e00e28fba06d0a
-github.com/opencontainers/runtime-spec 29686dbc5559d93fb1ef402eeda3e35c38d75af4
-github.com/opencontainers/runtime-tools 1d69bd0f9c39677d0630e50664fbc3154ae61b88
-github.com/pkg/errors v0.8.1
-github.com/sirupsen/logrus v1.3.0
-github.com/syndtr/gocapability db04d3cc01c8b54962a58ec7e491717d06cfcc16
-github.com/urfave/cli 7bc6a0acffa589f415f88aca16cc1de5ffd66f9c
-github.com/xeipuuv/gojsonpointer 4e3ac2762d5f479393488629ee9370b50873b3a6
-github.com/xeipuuv/gojsonreference bd5ef7bd5415a7ac448318e64f11a24cd21e594b
-github.com/xeipuuv/gojsonschema 1d523034197ff1f222f6429836dd36a2457a1874
-golang.org/x/crypto ff983b9c42bc9fbf91556e191cc8efb585c16908
-golang.org/x/net ed066c81e75eba56dd9bd2139ade88125b855585
-golang.org/x/sync 37e7f081c4d4c64e13b10787722085407fe5d15f
-golang.org/x/sys e5ecc2a6747ce8d4af18ed98b3de5ae30eb3a5bb
-golang.org/x/text d14c52b222ee852cdba8b07206ca0c614b389876
-google.golang.org/genproto d80a6e20e776b0b17a324d0ba1ab50a39c8e8944
-google.golang.org/grpc v1.12.0
-k8s.io/kubernetes v1.13.0

vendor/github.com/hashicorp/golang-lru/LICENSE

@@ -0,0 +1,362 @@
+Mozilla Public License, version 2.0
+
+1. Definitions
+
+1.1. "Contributor"
+
+     means each individual or legal entity that creates, contributes to the
+     creation of, or owns Covered Software.
+
+1.2. "Contributor Version"
+
+     means the combination of the Contributions of others (if any) used by a
+     Contributor and that particular Contributor's Contribution.
+
+1.3. "Contribution"
+
+     means Covered Software of a particular Contributor.
+
+1.4. "Covered Software"
+
+     means Source Code Form to which the initial Contributor has attached the
+     notice in Exhibit A, the Executable Form of such Source Code Form, and
+     Modifications of such Source Code Form, in each case including portions
+     thereof.
+
+1.5. "Incompatible With Secondary Licenses"
+     means
+
+     a. that the initial Contributor has attached the notice described in
+        Exhibit B to the Covered Software; or
+
+     b. that the Covered Software was made available under the terms of
+        version 1.1 or earlier of the License, but not also under the terms of
+        a Secondary License.
+
+1.6. "Executable Form"
+
+     means any form of the work other than Source Code Form.
+
+1.7. "Larger Work"
+
+     means a work that combines Covered Software with other material, in a
+     separate file or files, that is not Covered Software.
+
+1.8. "License"
+
+     means this document.
+
+1.9. "Licensable"
+
+     means having the right to grant, to the maximum extent possible, whether
+     at the time of the initial grant or subsequently, any and all of the
+     rights conveyed by this License.
+
+1.10. "Modifications"
+
+     means any of the following:
+
+     a. any file in Source Code Form that results from an addition to,
+        deletion from, or modification of the contents of Covered Software; or
+
+     b. any new file in Source Code Form that contains any Covered Software.
+
+1.11. "Patent Claims" of a Contributor
+
+      means any patent claim(s), including without limitation, method,
+      process, and apparatus claims, in any patent Licensable by such
+      Contributor that would be infringed, but for the grant of the License,
+      by the making, using, selling, offering for sale, having made, import,
+      or transfer of either its Contributions or its Contributor Version.
+
+1.12. "Secondary License"
+
+      means either the GNU General Public License, Version 2.0, the GNU Lesser
+      General Public License, Version 2.1, the GNU Affero General Public
+      License, Version 3.0, or any later versions of those licenses.
+
+1.13. "Source Code Form"
+
+      means the form of the work preferred for making modifications.
+
+1.14. "You" (or "Your")
+
+      means an individual or a legal entity exercising rights under this
+      License. For legal entities, "You" includes any entity that controls, is
+      controlled by, or is under common control with You. For purposes of this
+      definition, "control" means (a) the power, direct or indirect, to cause
+      the direction or management of such entity, whether by contract or
+      otherwise, or (b) ownership of more than fifty percent (50%) of the
+      outstanding shares or beneficial ownership of such entity.
+
+
+2. License Grants and Conditions
+
+2.1. Grants
+
+     Each Contributor hereby grants You a world-wide, royalty-free,
+     non-exclusive license:
+
+     a. under intellectual property rights (other than patent or trademark)
+        Licensable by such Contributor to use, reproduce, make available,
+        modify, display, perform, distribute, and otherwise exploit its
+        Contributions, either on an unmodified basis, with Modifications, or
+        as part of a Larger Work; and
+
+     b. under Patent Claims of such Contributor to make, use, sell, offer for
+        sale, have made, import, and otherwise transfer either its
+        Contributions or its Contributor Version.
+
+2.2. Effective Date
+
+     The licenses granted in Section 2.1 with respect to any Contribution
+     become effective for each Contribution on the date the Contributor first
+     distributes such Contribution.
+
+2.3. Limitations on Grant Scope
+
+     The licenses granted in this Section 2 are the only rights granted under
+     this License. No additional rights or licenses will be implied from the
+     distribution or licensing of Covered Software under this License.
+     Notwithstanding Section 2.1(b) above, no patent license is granted by a
+     Contributor:
+
+     a. for any code that a Contributor has removed from Covered Software; or
+
+     b. for infringements caused by: (i) Your and any other third party's
+        modifications of Covered Software, or (ii) the combination of its
+        Contributions with other software (except as part of its Contributor
+        Version); or
+
+     c. under Patent Claims infringed by Covered Software in the absence of
+        its Contributions.
+
+     This License does not grant any rights in the trademarks, service marks,
+     or logos of any Contributor (except as may be necessary to comply with
+     the notice requirements in Section 3.4).
+
+2.4. Subsequent Licenses
+
+     No Contributor makes additional grants as a result of Your choice to
+     distribute the Covered Software under a subsequent version of this
+     License (see Section 10.2) or under the terms of a Secondary License (if
+     permitted under the terms of Section 3.3).
+
+2.5. Representation
+
+     Each Contributor represents that the Contributor believes its
+     Contributions are its original creation(s) or it has sufficient rights to
+     grant the rights to its Contributions conveyed by this License.
+
+2.6. Fair Use
+
+     This License is not intended to limit any rights You have under
+     applicable copyright doctrines of fair use, fair dealing, or other
+     equivalents.
+
+2.7. Conditions
+
+     Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted in
+     Section 2.1.
+
+
+3. Responsibilities
+
+3.1. Distribution of Source Form
+
+     All distribution of Covered Software in Source Code Form, including any
+     Modifications that You create or to which You contribute, must be under
+     the terms of this License. You must inform recipients that the Source
+     Code Form of the Covered Software is governed by the terms of this
+     License, and how they can obtain a copy of this License. You may not
+     attempt to alter or restrict the recipients' rights in the Source Code
+     Form.
+
+3.2. Distribution of Executable Form
+
+     If You distribute Covered Software in Executable Form then:
+
+     a. such Covered Software must also be made available in Source Code Form,
+        as described in Section 3.1, and You must inform recipients of the
+        Executable Form how they can obtain a copy of such Source Code Form by
+        reasonable means in a timely manner, at a charge no more than the cost
+        of distribution to the recipient; and
+
+     b. You may distribute such Executable Form under the terms of this
+        License, or sublicense it under different terms, provided that the
+        license for the Executable Form does not attempt to limit or alter the
+        recipients' rights in the Source Code Form under this License.
+
+3.3. Distribution of a Larger Work
+
+     You may create and distribute a Larger Work under terms of Your choice,
+     provided that You also comply with the requirements of this License for
+     the Covered Software. If the Larger Work is a combination of Covered
+     Software with a work governed by one or more Secondary Licenses, and the
+     Covered Software is not Incompatible With Secondary Licenses, this
+     License permits You to additionally distribute such Covered Software
+     under the terms of such Secondary License(s), so that the recipient of
+     the Larger Work may, at their option, further distribute the Covered
+     Software under the terms of either this License or such Secondary
+     License(s).
+
+3.4. Notices
+
+     You may not remove or alter the substance of any license notices
+     (including copyright notices, patent notices, disclaimers of warranty, or
+     limitations of liability) contained within the Source Code Form of the
+     Covered Software, except that You may alter any license notices to the
+     extent required to remedy known factual inaccuracies.
+
+3.5. Application of Additional Terms
+
+     You may choose to offer, and to charge a fee for, warranty, support,
+     indemnity or liability obligations to one or more recipients of Covered
+     Software. However, You may do so only on Your own behalf, and not on
+     behalf of any Contributor. You must make it absolutely clear that any
+     such warranty, support, indemnity, or liability obligation is offered by
+     You alone, and You hereby agree to indemnify every Contributor for any
+     liability incurred by such Contributor as a result of warranty, support,
+     indemnity or liability terms You offer. You may include additional
+     disclaimers of warranty and limitations of liability specific to any
+     jurisdiction.
+
+4. Inability to Comply Due to Statute or Regulation
+
+   If it is impossible for You to comply with any of the terms of this License
+   with respect to some or all of the Covered Software due to statute,
+   judicial order, or regulation then You must: (a) comply with the terms of
+   this License to the maximum extent possible; and (b) describe the
+   limitations and the code they affect. Such description must be placed in a
+   text file included with all distributions of the Covered Software under
+   this License. Except to the extent prohibited by statute or regulation,
+   such description must be sufficiently detailed for a recipient of ordinary
+   skill to be able to understand it.
+
+5. Termination
+
+5.1. The rights granted under this License will terminate automatically if You
+     fail to comply with any of its terms. However, if You become compliant,
+     then the rights granted under this License from a particular Contributor
+     are reinstated (a) provisionally, unless and until such Contributor
+     explicitly and finally terminates Your grants, and (b) on an ongoing
+     basis, if such Contributor fails to notify You of the non-compliance by
+     some reasonable means prior to 60 days after You have come back into
+     compliance. Moreover, Your grants from a particular Contributor are
+     reinstated on an ongoing basis if such Contributor notifies You of the
+     non-compliance by some reasonable means, this is the first time You have
+     received notice of non-compliance with this License from such
+     Contributor, and You become compliant prior to 30 days after Your receipt
+     of the notice.
+
+5.2. If You initiate litigation against any entity by asserting a patent
+     infringement claim (excluding declaratory judgment actions,
+     counter-claims, and cross-claims) alleging that a Contributor Version
+     directly or indirectly infringes any patent, then the rights granted to
+     You by any and all Contributors for the Covered Software under Section
+     2.1 of this License shall terminate.
+
+5.3. In the event of termination under Sections 5.1 or 5.2 above, all end user
+     license agreements (excluding distributors and resellers) which have been
+     validly granted by You or Your distributors under this License prior to
+     termination shall survive termination.
+
+6. Disclaimer of Warranty
+
+   Covered Software is provided under this License on an "as is" basis,
+   without warranty of any kind, either expressed, implied, or statutory,
+   including, without limitation, warranties that the Covered Software is free
+   of defects, merchantable, fit for a particular purpose or non-infringing.
+   The entire risk as to the quality and performance of the Covered Software
+   is with You. Should any Covered Software prove defective in any respect,
+   You (not any Contributor) assume the cost of any necessary servicing,
+   repair, or correction. This disclaimer of warranty constitutes an essential
+   part of this License. No use of  any Covered Software is authorized under
+   this License except under this disclaimer.
+
+7. Limitation of Liability
+
+   Under no circumstances and under no legal theory, whether tort (including
+   negligence), contract, or otherwise, shall any Contributor, or anyone who
+   distributes Covered Software as permitted above, be liable to You for any
+   direct, indirect, special, incidental, or consequential damages of any
+   character including, without limitation, damages for lost profits, loss of
+   goodwill, work stoppage, computer failure or malfunction, or any and all
+   other commercial damages or losses, even if such party shall have been
+   informed of the possibility of such damages. This limitation of liability
+   shall not apply to liability for death or personal injury resulting from
+   such party's negligence to the extent applicable law prohibits such
+   limitation. Some jurisdictions do not allow the exclusion or limitation of
+   incidental or consequential damages, so this exclusion and limitation may
+   not apply to You.
+
+8. Litigation
+
+   Any litigation relating to this License may be brought only in the courts
+   of a jurisdiction where the defendant maintains its principal place of
+   business and such litigation shall be governed by laws of that
+   jurisdiction, without reference to its conflict-of-law provisions. Nothing
+   in this Section shall prevent a party's ability to bring cross-claims or
+   counter-claims.
+
+9. Miscellaneous
+
+   This License represents the complete agreement concerning the subject
+   matter hereof. If any provision of this License is held to be
+   unenforceable, such provision shall be reformed only to the extent
+   necessary to make it enforceable. Any law or regulation which provides that
+   the language of a contract shall be construed against the drafter shall not
+   be used to construe this License against a Contributor.
+
+
+10. Versions of the License
+
+10.1. New Versions
+
+      Mozilla Foundation is the license steward. Except as provided in Section
+      10.3, no one other than the license steward has the right to modify or
+      publish new versions of this License. Each version will be given a
+      distinguishing version number.
+
+10.2. Effect of New Versions
+
+      You may distribute the Covered Software under the terms of the version
+      of the License under which You originally received the Covered Software,
+      or under the terms of any subsequent version published by the license
+      steward.
+
+10.3. Modified Versions
+
+      If you create software not governed by this License, and you want to
+      create a new license for such software, you may create and use a
+      modified version of this License if you rename the license and remove
+      any references to the name of the license steward (except to note that
+      such modified license differs from this License).
+
+10.4. Distributing Source Code Form that is Incompatible With Secondary
+      Licenses If You choose to distribute Source Code Form that is
+      Incompatible With Secondary Licenses under the terms of this version of
+      the License, the notice described in Exhibit B of this License must be
+      attached.
+
+Exhibit A - Source Code Form License Notice
+
+      This Source Code Form is subject to the
+      terms of the Mozilla Public License, v.
+      2.0. If a copy of the MPL was not
+      distributed with this file, You can
+      obtain one at
+      http://mozilla.org/MPL/2.0/.
+
+If it is not possible or desirable to put the notice in a particular file,
+then You may include the notice in a location (such as a LICENSE file in a
+relevant directory) where a recipient would be likely to look for such a
+notice.
+
+You may add additional accurate notices of copyright ownership.
+
+Exhibit B - "Incompatible With Secondary Licenses" Notice
+
+      This Source Code Form is "Incompatible
+      With Secondary Licenses", as defined by
+      the Mozilla Public License, v. 2.0.

vendor/github.com/hashicorp/golang-lru/README.md

@@ -0,0 +1,25 @@
+golang-lru
+==========
+
+This provides the `lru` package which implements a fixed-size
+thread safe LRU cache. It is based on the cache in Groupcache.
+
+Documentation
+=============
+
+Full docs are available on [Godoc](http://godoc.org/github.com/hashicorp/golang-lru)
+
+Example
+=======
+
+Using the LRU is very simple:
+
+```go
+l, _ := New(128)
+for i := 0; i < 256; i++ {
+    l.Add(i, nil)
+}
+if l.Len() != 128 {
+    panic(fmt.Sprintf("bad len: %v", l.Len()))
+}
+```

vendor/github.com/hashicorp/golang-lru/go.mod

@@ -0,0 +1 @@
+module github.com/hashicorp/golang-lru

vendor/github.com/hashicorp/golang-lru/simplelru/lru.go

@@ -0,0 +1,161 @@
+package simplelru
+
+import (
+	"container/list"
+	"errors"
+)
+
+// EvictCallback is used to get a callback when a cache entry is evicted
+type EvictCallback func(key interface{}, value interface{})
+
+// LRU implements a non-thread safe fixed size LRU cache
+type LRU struct {
+	size      int
+	evictList *list.List
+	items     map[interface{}]*list.Element
+	onEvict   EvictCallback
+}
+
+// entry is used to hold a value in the evictList
+type entry struct {
+	key   interface{}
+	value interface{}
+}
+
+// NewLRU constructs an LRU of the given size
+func NewLRU(size int, onEvict EvictCallback) (*LRU, error) {
+	if size <= 0 {
+		return nil, errors.New("Must provide a positive size")
+	}
+	c := &LRU{
+		size:      size,
+		evictList: list.New(),
+		items:     make(map[interface{}]*list.Element),
+		onEvict:   onEvict,
+	}
+	return c, nil
+}
+
+// Purge is used to completely clear the cache.
+func (c *LRU) Purge() {
+	for k, v := range c.items {
+		if c.onEvict != nil {
+			c.onEvict(k, v.Value.(*entry).value)
+		}
+		delete(c.items, k)
+	}
+	c.evictList.Init()
+}
+
+// Add adds a value to the cache.  Returns true if an eviction occurred.
+func (c *LRU) Add(key, value interface{}) (evicted bool) {
+	// Check for existing item
+	if ent, ok := c.items[key]; ok {
+		c.evictList.MoveToFront(ent)
+		ent.Value.(*entry).value = value
+		return false
+	}
+
+	// Add new item
+	ent := &entry{key, value}
+	entry := c.evictList.PushFront(ent)
+	c.items[key] = entry
+
+	evict := c.evictList.Len() > c.size
+	// Verify size not exceeded
+	if evict {
+		c.removeOldest()
+	}
+	return evict
+}
+
+// Get looks up a key's value from the cache.
+func (c *LRU) Get(key interface{}) (value interface{}, ok bool) {
+	if ent, ok := c.items[key]; ok {
+		c.evictList.MoveToFront(ent)
+		return ent.Value.(*entry).value, true
+	}
+	return
+}
+
+// Contains checks if a key is in the cache, without updating the recent-ness
+// or deleting it for being stale.
+func (c *LRU) Contains(key interface{}) (ok bool) {
+	_, ok = c.items[key]
+	return ok
+}
+
+// Peek returns the key value (or undefined if not found) without updating
+// the "recently used"-ness of the key.
+func (c *LRU) Peek(key interface{}) (value interface{}, ok bool) {
+	var ent *list.Element
+	if ent, ok = c.items[key]; ok {
+		return ent.Value.(*entry).value, true
+	}
+	return nil, ok
+}
+
+// Remove removes the provided key from the cache, returning if the
+// key was contained.
+func (c *LRU) Remove(key interface{}) (present bool) {
+	if ent, ok := c.items[key]; ok {
+		c.removeElement(ent)
+		return true
+	}
+	return false
+}
+
+// RemoveOldest removes the oldest item from the cache.
+func (c *LRU) RemoveOldest() (key interface{}, value interface{}, ok bool) {
+	ent := c.evictList.Back()
+	if ent != nil {
+		c.removeElement(ent)
+		kv := ent.Value.(*entry)
+		return kv.key, kv.value, true
+	}
+	return nil, nil, false
+}
+
+// GetOldest returns the oldest entry
+func (c *LRU) GetOldest() (key interface{}, value interface{}, ok bool) {
+	ent := c.evictList.Back()
+	if ent != nil {
+		kv := ent.Value.(*entry)
+		return kv.key, kv.value, true
+	}
+	return nil, nil, false
+}
+
+// Keys returns a slice of the keys in the cache, from oldest to newest.
+func (c *LRU) Keys() []interface{} {
+	keys := make([]interface{}, len(c.items))
+	i := 0
+	for ent := c.evictList.Back(); ent != nil; ent = ent.Prev() {
+		keys[i] = ent.Value.(*entry).key
+		i++
+	}
+	return keys
+}
+
+// Len returns the number of items in the cache.
+func (c *LRU) Len() int {
+	return c.evictList.Len()
+}
+
+// removeOldest removes the oldest item from the cache.
+func (c *LRU) removeOldest() {
+	ent := c.evictList.Back()
+	if ent != nil {
+		c.removeElement(ent)
+	}
+}
+
+// removeElement is used to remove a given list element from the cache
+func (c *LRU) removeElement(e *list.Element) {
+	c.evictList.Remove(e)
+	kv := e.Value.(*entry)
+	delete(c.items, kv.key)
+	if c.onEvict != nil {
+		c.onEvict(kv.key, kv.value)
+	}
+}

vendor/github.com/hashicorp/golang-lru/simplelru/lru_interface.go

@@ -0,0 +1,36 @@
+package simplelru
+
+// LRUCache is the interface for simple LRU cache.
+type LRUCache interface {
+	// Adds a value to the cache, returns true if an eviction occurred and
+	// updates the "recently used"-ness of the key.
+	Add(key, value interface{}) bool
+
+	// Returns key's value from the cache and
+	// updates the "recently used"-ness of the key. #value, isFound
+	Get(key interface{}) (value interface{}, ok bool)
+
+	// Check if a key exsists in cache without updating the recent-ness.
+	Contains(key interface{}) (ok bool)
+
+	// Returns key's value without updating the "recently used"-ness of the key.
+	Peek(key interface{}) (value interface{}, ok bool)
+
+	// Removes a key from the cache.
+	Remove(key interface{}) bool
+
+	// Removes the oldest entry from cache.
+	RemoveOldest() (interface{}, interface{}, bool)
+
+	// Returns the oldest entry from the cache. #key, value, isFound
+	GetOldest() (interface{}, interface{}, bool)
+
+	// Returns a slice of the keys in the cache, from oldest to newest.
+	Keys() []interface{}
+
+	// Returns the number of items in the cache.
+	Len() int
+
+	// Clear all cache entries
+	Purge()
+}

vendor/go.opencensus.io/LICENSE

@@ -0,0 +1,202 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
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