Migrated urunc from containerd v1.x to v2.x

This commit:
1. Upgrades dependency and fixes file structure - go.mod, go.sum, vendor/
2. Upgraded shim bootstrapping logic - containerd-shim-urunc-v2/main.go
3. Added backward compatible TTRPC Protocol layer - pkg/containerd-shim/task_service.go
4. Migrated init function and error mapping to accomodate containerd's v2 changes. - task_plugin.go, task_service.go

Signed-off-by: Arijit Dubey <arijitdubey2018@gmail.com>

Author: Cicada1107

cmd/containerd-shim-urunc-v2/main.go

@@ -16,12 +16,53 @@ package main
 
 import (
 	"context"
+	"io"
+	"os"
+	"sync"
 
-	"github.com/containerd/containerd/runtime/v2/runc/manager"
-	"github.com/containerd/containerd/runtime/v2/shim"
+	bootapi "github.com/containerd/containerd/api/runtime/bootstrap/v1"
+	"github.com/containerd/containerd/v2/cmd/containerd-shim-runc-v2/manager"
+	"github.com/containerd/containerd/v2/pkg/protobuf/proto"
+	"github.com/containerd/containerd/v2/pkg/shim"
 	_ "github.com/urunc-dev/urunc/pkg/containerd-shim"
 )
 
 func main() {
-	shim.RunManager(context.Background(), manager.NewShimManager("io.containerd.urunc.v2"))
+	var isStart bool
+	for _, arg := range os.Args {
+		if arg == "start" {
+			isStart = true
+			break
+		}
+	}
+
+	if isStart {
+		r, w, err := os.Pipe()
+		if err == nil {
+			oldStdout := os.Stdout
+			os.Stdout = w
+
+			var wg sync.WaitGroup
+			wg.Add(1)
+			go func() {
+				defer wg.Done()
+				data, _ := io.ReadAll(r)
+				var result bootapi.BootstrapResult
+				if err := proto.Unmarshal(data, &result); err == nil && result.Address != "" {
+					oldStdout.WriteString(result.Address)
+				} else {
+					oldStdout.Write(data)
+				}
+			}()
+
+			shim.RunShim(context.Background(), manager.NewShimManager("io.containerd.urunc.v2"))
+
+			os.Stdout = oldStdout
+			w.Close()
+			wg.Wait()
+			return
+		}
+	}
+
+	shim.RunShim(context.Background(), manager.NewShimManager("io.containerd.urunc.v2"))
 }

go.mod

@@ -1,15 +1,17 @@
 module github.com/urunc-dev/urunc
 
-go 1.25.0
+go 1.26.3
 
 require (
 	github.com/BurntSushi/toml v1.6.0
 	github.com/asaskevich/govalidator v0.0.0-20230301143203-a9d515a09cc2
 	github.com/cavaliergopher/cpio v1.0.1
-	github.com/containerd/containerd v1.7.30
-	github.com/containerd/containerd/api v1.10.0
+	github.com/containerd/containerd/api v1.11.1
+	github.com/containerd/containerd/v2 v2.3.1
+	github.com/containerd/errdefs/pkg v0.3.0
 	github.com/containerd/log v0.1.0
-	github.com/containerd/ttrpc v1.2.7
+	github.com/containerd/plugin v1.1.0
+	github.com/containerd/ttrpc v1.2.8
 	github.com/creack/pty v1.1.24
 	github.com/elastic/go-seccomp-bpf v1.6.0
 	github.com/hashicorp/go-version v1.9.0
@@ -21,7 +23,7 @@ require (
 	github.com/onsi/gomega v1.39.1
 	github.com/opencontainers/image-spec v1.1.1
 	github.com/opencontainers/runc v1.3.4
-	github.com/opencontainers/runtime-spec v1.2.1
+	github.com/opencontainers/runtime-spec v1.3.0
 	github.com/prometheus-community/pro-bing v0.8.0
 	github.com/rs/zerolog v1.35.1
 	github.com/sirupsen/logrus v1.9.4
@@ -30,27 +32,25 @@ require (
 	github.com/vishvananda/netlink v1.3.1
 	github.com/vishvananda/netns v0.0.5
 	golang.org/x/sys v0.43.0
-	google.golang.org/grpc v1.79.3
-	k8s.io/cri-api v0.35.4
+	google.golang.org/grpc v1.80.0
+	k8s.io/cri-api v0.36.0
 )
 
 require (
 	github.com/Masterminds/semver/v3 v3.4.0 // indirect
-	github.com/Microsoft/go-winio v0.6.2 // indirect
-	github.com/Microsoft/hcsshim v0.13.0 // indirect
+	github.com/Microsoft/go-winio v0.6.3-0.20251027160822-ad3df93bed29 // indirect
+	github.com/Microsoft/hcsshim v0.15.0-rc.1 // indirect
 	github.com/cilium/ebpf v0.20.0 // indirect
-	github.com/containerd/cgroups/v3 v3.1.0 // indirect
+	github.com/containerd/cgroups/v3 v3.1.3 // indirect
 	github.com/containerd/console v1.0.5 // indirect
-	github.com/containerd/continuity v0.4.5 // indirect
+	github.com/containerd/continuity v0.5.0 // indirect
 	github.com/containerd/errdefs v1.0.0 // indirect
-	github.com/containerd/errdefs/pkg v0.3.0 // indirect
 	github.com/containerd/fifo v1.1.0 // indirect
-	github.com/containerd/go-runc v1.0.0 // indirect
-	github.com/containerd/platforms v0.2.1 // indirect
+	github.com/containerd/go-runc v1.1.0 // indirect
+	github.com/containerd/platforms v1.0.0-rc.4 // indirect
 	github.com/containerd/typeurl/v2 v2.2.3 // indirect
 	github.com/coreos/go-systemd/v22 v22.7.0 // indirect
 	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
-	github.com/docker/go-events v0.0.0-20250808211157-605354379745 // indirect
 	github.com/docker/go-units v0.5.0 // indirect
 	github.com/go-logr/logr v1.4.3 // indirect
 	github.com/go-task/slim-sprig/v3 v3.0.0 // indirect
@@ -60,26 +60,24 @@ require (
 	github.com/google/go-cmp v0.7.0 // indirect
 	github.com/google/pprof v0.0.0-20260115054156-294ebfa9ad83 // indirect
 	github.com/google/uuid v1.6.0 // indirect
-	github.com/klauspost/compress v1.18.3 // indirect
+	github.com/klauspost/compress v1.18.5 // indirect
 	github.com/mattn/go-colorable v0.1.14 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
 	github.com/mdlayher/socket v0.5.1 // indirect
+	github.com/mdlayher/vsock v1.2.1 // indirect
 	github.com/moby/sys/mountinfo v0.7.2 // indirect
-	github.com/moby/sys/sequential v0.6.0 // indirect
-	github.com/moby/sys/user v0.4.0 // indirect
 	github.com/opencontainers/go-digest v1.0.0 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
 	github.com/stretchr/objx v0.5.3 // indirect
 	go.opencensus.io v0.24.0 // indirect
 	go.yaml.in/yaml/v3 v3.0.4 // indirect
-	golang.org/x/mod v0.32.0 // indirect
-	golang.org/x/net v0.49.0 // indirect
-	golang.org/x/sync v0.19.0 // indirect
-	golang.org/x/text v0.33.0 // indirect
-	golang.org/x/tools v0.41.0 // indirect
-	google.golang.org/genproto v0.0.0-20260128011058-8636f8732409 // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20260128011058-8636f8732409 // indirect
-	google.golang.org/protobuf v1.36.11 // indirect
+	golang.org/x/mod v0.35.0 // indirect
+	golang.org/x/net v0.52.0 // indirect
+	golang.org/x/sync v0.20.0 // indirect
+	golang.org/x/text v0.35.0 // indirect
+	golang.org/x/tools v0.43.0 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20260406210006-6f92a3bedf2d // indirect
+	google.golang.org/protobuf v1.36.12-0.20260120151049-f2248ac996af // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )