fix nil fileEntry

fs/bridge.go

@@ -484,7 +484,9 @@ func (b *rawBridge) Create(cancel <-chan struct{}, input *fuse.CreateIn, name st
 	}
 
 	child, fe := b.addNewChild(parent, name, child, f, input.Flags|syscall.O_CREAT|syscall.O_EXCL, &out.EntryOut)
-	out.Fh = uint64(fe.fh)
+	if fe != nil {
+		out.Fh = uint64(fe.fh)
+	}
 	out.OpenFlags = flags
 
 	b.addBackingID(child, f, &out.OpenOut)

fs/rawbridge_test.go

@@ -0,0 +1,57 @@
+package fs
+
+import (
+	"context"
+	"os"
+	"syscall"
+	"testing"
+	"time"
+
+	"github.com/hanwen/go-fuse/v2/fuse"
+)
+
+// CustomFS is our file system structure.
+type CustomFS struct {
+	Inode
+}
+
+// Implement Create method for CustomFS
+func (f *CustomFS) Create(ctx context.Context, name string, flags uint32, mode uint32, out *fuse.EntryOut) (inode *Inode, fh FileHandle, fuseFlags uint32, errno syscall.Errno) {
+	child := f.NewPersistentInode(ctx, &Inode{}, StableAttr{Mode: fuse.S_IFREG})
+	return child, nil, 0, syscall.F_OK
+}
+
+func TestFileSystem(t *testing.T) {
+	// Create a temporary directory for mounting
+	mountDir, err := os.MkdirTemp("", "go-fuse-test")
+	if err != nil {
+		t.Fatalf("failed to create temp directory: %v", err)
+	}
+	defer os.RemoveAll(mountDir)
+
+	// Create a file system instance
+	root := &CustomFS{}
+	opts := &Options{}
+	opts.MountOptions.Options = append(opts.MountOptions.Options, "rw")
+	server, err := Mount(mountDir, root, &Options{})
+	if err != nil {
+		t.Fatalf("failed to mount filesystem: %v", err)
+	}
+	defer server.Unmount()
+
+	// Waiting for the file system to mount
+	time.Sleep(100 * time.Millisecond)
+
+	// Checking file creation
+	filePath := mountDir + "/test.file"
+	file, err := os.Create(filePath)
+	if err != nil {
+		t.Fatalf("failed to create file in mounted filesystem: %v", err)
+	}
+	file.Close()
+
+	// Check that the file was created
+	if _, err := os.Stat(filePath); os.IsNotExist(err) {
+		t.Fatalf("file not created in mounted filesystem")
+	}
+}