Remove hcsshim import from repo

defaults_windows.go

@@ -22,7 +22,6 @@ import (
 	"strconv"
 	"strings"
 
-	"github.com/Microsoft/hcsshim/osversion"
 	specs "github.com/opencontainers/image-spec/specs-go/v1"
 	"golang.org/x/sys/windows"
 )
@@ -56,25 +55,25 @@ func (m windowsmatcher) Match(p specs.Platform) bool {
 			return true
 		}
 
-		hostOsVersion := GetOsVersion(m.osVersionPrefix)
-		ctrOsVersion := GetOsVersion(p.OSVersion)
-		return osversion.CheckHostAndContainerCompat(hostOsVersion, ctrOsVersion)
+		hostOsVersion := getOSVersion(m.osVersionPrefix)
+		ctrOsVersion := getOSVersion(p.OSVersion)
+		return checkHostAndContainerCompat(hostOsVersion, ctrOsVersion)
 	}
 
 	return match
 }
 
-func GetOsVersion(osVersionPrefix string) osversion.OSVersion {
+func getOSVersion(osVersionPrefix string) osVersion {
 	parts := strings.Split(osVersionPrefix, ".")
 	if len(parts) < 3 {
-		return osversion.OSVersion{}
+		return osVersion{}
 	}
 
 	majorVersion, _ := strconv.Atoi(parts[0])
 	minorVersion, _ := strconv.Atoi(parts[1])
 	buildNumber, _ := strconv.Atoi(parts[2])
 
-	return osversion.OSVersion{
+	return osVersion{
 		MajorVersion: uint8(majorVersion),
 		MinorVersion: uint8(minorVersion),
 		Build:        uint16(buildNumber),

go.mod

@@ -3,7 +3,6 @@ module github.com/containerd/platforms
 go 1.20
 
 require (
-	github.com/Microsoft/hcsshim v0.10.0
 	github.com/containerd/log v0.1.0
 	github.com/opencontainers/image-spec v1.1.0-rc5
 	github.com/stretchr/testify v1.8.4

go.sum

@@ -1,5 +1,3 @@
-github.com/Microsoft/hcsshim v0.10.0 h1:PbvoxdUGgXxyirmN5Oncp3POLkxEG5LbWCEBfWmHTGA=
-github.com/Microsoft/hcsshim v0.10.0/go.mod h1:3j1trOamcUdi86J5Tr5+1BpqMjSv/QeRWkX2whBF6dY=
 github.com/containerd/log v0.1.0 h1:TCJt7ioM2cr/tfR8GPbGf9/VRAX8D2B4PjzCpfX540I=
 github.com/containerd/log v0.1.0/go.mod h1:VRRf09a7mHDIRezVKTRCrOq78v577GXq3bSa3EhrzVo=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=

platform_compat_windows.go

@@ -0,0 +1,78 @@
+/*
+   Copyright The containerd Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package platforms
+
+// osVersion is a wrapper for Windows version information
+// https://msdn.microsoft.com/en-us/library/windows/desktop/ms724439(v=vs.85).aspx
+type osVersion struct {
+	Version      uint32
+	MajorVersion uint8
+	MinorVersion uint8
+	Build        uint16
+}
+
+// Windows Client and Server build numbers.
+//
+// See:
+// https://learn.microsoft.com/en-us/windows/release-health/release-information
+// https://learn.microsoft.com/en-us/windows/release-health/windows-server-release-info
+// https://learn.microsoft.com/en-us/windows/release-health/windows11-release-information
+const (
+	// rs5 (version 1809, codename "Redstone 5") corresponds to Windows Server
+	// 2019 (ltsc2019), and Windows 10 (October 2018 Update).
+	rs5 = 17763
+
+	// v21H2Server corresponds to Windows Server 2022 (ltsc2022).
+	v21H2Server = 20348
+
+	// v22H2Win11 corresponds to Windows 11 (2022 Update).
+	v22H2Win11 = 22621
+)
+
+// List of stable ABI compliant ltsc releases
+// Note: List must be sorted in ascending order
+var compatLTSCReleases = []uint16{
+	v21H2Server,
+}
+
+// CheckHostAndContainerCompat checks if given host and container
+// OS versions are compatible.
+// It includes support for stable ABI compliant versions as well.
+// Every release after WS 2022 will support the previous ltsc
+// container image. Stable ABI is in preview mode for windows 11 client.
+// Refer: https://learn.microsoft.com/en-us/virtualization/windowscontainers/deploy-containers/version-compatibility?tabs=windows-server-2022%2Cwindows-10#windows-server-host-os-compatibility
+func checkHostAndContainerCompat(host, ctr osVersion) bool {
+	// check major minor versions of host and guest
+	if host.MajorVersion != ctr.MajorVersion ||
+		host.MinorVersion != ctr.MinorVersion {
+		return false
+	}
+
+	// If host is < WS 2022, exact version match is required
+	if host.Build < v21H2Server {
+		return host.Build == ctr.Build
+	}
+
+	var supportedLtscRelease uint16
+	for i := len(compatLTSCReleases) - 1; i >= 0; i-- {
+		if host.Build >= compatLTSCReleases[i] {
+			supportedLtscRelease = compatLTSCReleases[i]
+			break
+		}
+	}
+	return ctr.Build >= supportedLtscRelease && ctr.Build <= host.Build
+}

platform_compat_windows_test.go

@@ -0,0 +1,84 @@
+/*
+   Copyright The containerd Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package platforms
+
+import (
+	"testing"
+)
+
+// Test the platform compatibility of the different
+// OS Versions considering two ltsc container image
+// versions (ltsc2019, ltsc2022)
+func Test_PlatformCompat(t *testing.T) {
+	for testName, tc := range map[string]struct {
+		hostOs    uint16
+		ctrOs     uint16
+		shouldRun bool
+	}{
+		"RS5Host_ltsc2019": {
+			hostOs:    rs5,
+			ctrOs:     rs5,
+			shouldRun: true,
+		},
+		"RS5Host_ltsc2022": {
+			hostOs:    rs5,
+			ctrOs:     v21H2Server,
+			shouldRun: false,
+		},
+		"WS2022Host_ltsc2019": {
+			hostOs:    v21H2Server,
+			ctrOs:     rs5,
+			shouldRun: false,
+		},
+		"WS2022Host_ltsc2022": {
+			hostOs:    v21H2Server,
+			ctrOs:     v21H2Server,
+			shouldRun: true,
+		},
+		"Wind11Host_ltsc2019": {
+			hostOs:    v22H2Win11,
+			ctrOs:     rs5,
+			shouldRun: false,
+		},
+		"Wind11Host_ltsc2022": {
+			hostOs:    v22H2Win11,
+			ctrOs:     v21H2Server,
+			shouldRun: true,
+		},
+	} {
+		// Check if ltsc2019/ltsc2022 guest images are compatible on
+		// the given host OS versions
+		//
+		hostOSVersion := osVersion{
+			MajorVersion: 10,
+			MinorVersion: 0,
+			Build:        tc.hostOs,
+		}
+		ctrOSVersion := osVersion{
+			MajorVersion: 10,
+			MinorVersion: 0,
+			Build:        tc.ctrOs,
+		}
+		if checkHostAndContainerCompat(hostOSVersion, ctrOSVersion) != tc.shouldRun {
+			var expectedResultStr string
+			if !tc.shouldRun {
+				expectedResultStr = " NOT"
+			}
+			t.Fatalf("Failed %v: host %v should%s be able to run guest %v", testName, tc.hostOs, expectedResultStr, tc.ctrOs)
+		}
+	}
+}