Skip running the UDS lisafs test for runsc/fsgofer.

In some test environments, the `TEST_TMPDIR` path is too long.
So creating a socket file inside that via bind(2) fails with EINVAL.
bind(2) requires paths to be shorter than 108.

PiperOrigin-RevId: 609110892

pkg/lisafs/testsuite/testsuite.go

@@ -46,6 +46,9 @@ type Tester interface {
 	// SetUserGroupIDSupported returns true if the backing server supports
 	// changing UID/GID for files.
 	SetUserGroupIDSupported() bool
+
+	// BindSupported returns true if the backing server supports BindAt.
+	BindSupported() bool
 }
 
 // RunAllLocalFSTests runs all local FS tests as subtests.
@@ -606,6 +609,9 @@ func testMknod(ctx context.Context, t *testing.T, tester Tester, root lisafs.Cli
 }
 
 func testUDS(ctx context.Context, t *testing.T, tester Tester, root lisafs.ClientFD) {
+	if !tester.BindSupported() {
+		t.Skipf("server does not support BindAt RPC")
+	}
 	const name = "sock"
 	file, socket, stat := bind(ctx, t, root, name, unix.SOCK_STREAM)
 	defer closeFD(ctx, t, file)

runsc/fsgofer/BUILD

@@ -34,6 +34,5 @@ go_test(
         "//pkg/lisafs",
         "//pkg/lisafs/testsuite",
         "//pkg/log",
-        "//runsc/config",
     ],
 )

runsc/fsgofer/lisafs_test.go

@@ -20,7 +20,6 @@ import (
 	"gvisor.dev/gvisor/pkg/lisafs"
 	"gvisor.dev/gvisor/pkg/lisafs/testsuite"
 	"gvisor.dev/gvisor/pkg/log"
-	"gvisor.dev/gvisor/runsc/config"
 	"gvisor.dev/gvisor/runsc/fsgofer"
 )
 
@@ -39,7 +38,7 @@ type tester struct{}
 
 // NewServer implements testsuite.Tester.NewServer.
 func (tester) NewServer(t *testing.T) *lisafs.Server {
-	return &fsgofer.NewLisafsServer(fsgofer.Config{HostUDS: config.HostUDSCreate}).Server
+	return &fsgofer.NewLisafsServer(fsgofer.Config{}).Server
 }
 
 // LinkSupported implements testsuite.Tester.LinkSupported.
@@ -52,6 +51,13 @@ func (tester) SetUserGroupIDSupported() bool {
 	return true
 }
 
+// BindSupported implements testsuite.Tester.BindSupported.
+func (tester) BindSupported() bool {
+	// In some test environments, the mount path is really large and bind(2)
+	// fails with EINVAL if the path length >= 108.
+	return false
+}
+
 func TestFSGofer(t *testing.T) {
 	testsuite.RunAllLocalFSTests(t, tester{})
 }