Move Cleanup to its own package

PiperOrigin-RevId: 313663382

3 files changed, 13 insertions, 22 deletions

diff --git a/runsc/container/BUILD b/runsc/container/BUILD
index 46154df60..9a856d65c 100644
--- a/runsc/container/BUILD
+++ b/runsc/container/BUILD
@@ -16,6 +16,7 @@ go_library(
     ],
     deps = [
         "//pkg/abi/linux",
+        "//pkg/cleanup",
         "//pkg/log",
         "//pkg/sentry/control",
         "//pkg/sentry/sighandling",
@@ -53,6 +54,7 @@ go_test(
     deps = [
         "//pkg/abi/linux",
         "//pkg/bits",
+        "//pkg/cleanup",
         "//pkg/log",
         "//pkg/sentry/control",
         "//pkg/sentry/kernel",
diff --git a/runsc/container/container.go b/runsc/container/container.go
index 8539f252d..6d297d0df 100644
--- a/runsc/container/container.go
+++ b/runsc/container/container.go
@@ -31,6 +31,7 @@ import (
 	"github.com/cenkalti/backoff"
 	specs "github.com/opencontainers/runtime-spec/specs-go"
 	"gvisor.dev/gvisor/pkg/abi/linux"
+	"gvisor.dev/gvisor/pkg/cleanup"
 	"gvisor.dev/gvisor/pkg/log"
 	"gvisor.dev/gvisor/pkg/sentry/control"
 	"gvisor.dev/gvisor/pkg/sentry/sighandling"
@@ -293,7 +294,7 @@ func New(conf *boot.Config, args Args) (*Container, error) {
 	}
 	// The Cleanup object cleans up partially created containers when an error
 	// occurs. Any errors occurring during cleanup itself are ignored.
-	cu := specutils.MakeCleanup(func() { _ = c.Destroy() })
+	cu := cleanup.Make(func() { _ = c.Destroy() })
 	defer cu.Clean()
 
 	// Lock the container metadata file to prevent concurrent creations of
@@ -402,7 +403,7 @@ func (c *Container) Start(conf *boot.Config) error {
 	if err := c.Saver.lock(); err != nil {
 		return err
 	}
-	unlock := specutils.MakeCleanup(func() { c.Saver.unlock() })
+	unlock := cleanup.Make(func() { c.Saver.unlock() })
 	defer unlock.Clean()
 
 	if err := c.requireStatus("start", Created); err != nil {
@@ -506,7 +507,7 @@ func Run(conf *boot.Config, args Args) (syscall.WaitStatus, error) {
 	}
 	// Clean up partially created container if an error occurs.
 	// Any errors returned by Destroy() itself are ignored.
-	cu := specutils.MakeCleanup(func() {
+	cu := cleanup.Make(func() {
 		c.Destroy()
 	})
 	defer cu.Clean()
diff --git a/runsc/container/multi_container_test.go b/runsc/container/multi_container_test.go
index e3704b453..dc825abd9 100644
--- a/runsc/container/multi_container_test.go
+++ b/runsc/container/multi_container_test.go
@@ -27,6 +27,7 @@ import (
 	"time"
 
 	specs "github.com/opencontainers/runtime-spec/specs-go"
+	"gvisor.dev/gvisor/pkg/cleanup"
 	"gvisor.dev/gvisor/pkg/sentry/control"
 	"gvisor.dev/gvisor/pkg/sentry/kernel"
 	"gvisor.dev/gvisor/pkg/sync"
@@ -64,29 +65,16 @@ func startContainers(conf *boot.Config, specs []*specs.Spec, ids []string) ([]*C
 		panic("conf.RootDir not set. Call testutil.SetupRootDir() to set.")
 	}
 
-	var (
-		containers []*Container
-		cleanups   []func()
-	)
-	cleanups = append(cleanups, func() {
-		for _, c := range containers {
-			c.Destroy()
-		}
-	})
-	cleanupAll := func() {
-		for _, c := range cleanups {
-			c()
-		}
-	}
-	localClean := specutils.MakeCleanup(cleanupAll)
-	defer localClean.Clean()
+	cu := cleanup.Cleanup{}
+	defer cu.Clean()
 
+	var containers []*Container
 	for i, spec := range specs {
 		bundleDir, cleanup, err := testutil.SetupBundleDir(spec)
 		if err != nil {
 			return nil, nil, fmt.Errorf("error setting up container: %v", err)
 		}
-		cleanups = append(cleanups, cleanup)
+		cu.Add(cleanup)
 
 		args := Args{
 			ID:        ids[i],
@@ -97,6 +85,7 @@ func startContainers(conf *boot.Config, specs []*specs.Spec, ids []string) ([]*C
 		if err != nil {
 			return nil, nil, fmt.Errorf("error creating container: %v", err)
 		}
+		cu.Add(func() { cont.Destroy() })
 		containers = append(containers, cont)
 
 		if err := cont.Start(conf); err != nil {
@@ -104,8 +93,7 @@ func startContainers(conf *boot.Config, specs []*specs.Spec, ids []string) ([]*C
 		}
 	}
 
-	localClean.Release()
-	return containers, cleanupAll, nil
+	return containers, cu.Release(), nil
 }
 
 type execDesc struct {