package main import ( "log" "os" "context" "syscall" "github.com/hanwen/go-fuse/v2/fs" "github.com/hanwen/go-fuse/v2/fuse" ) type ITProperty struct { name string Ino uint64 } type ITNode struct { fs.Inode kind int Ino uint64 } var properties = []ITProperty { ITProperty{"heartrate", 2}, ITProperty{"battery", 3}, ITProperty{"motion", 4}, ITProperty{"stepcount", 5}, ITProperty{"version", 6}, ITProperty{"address", 7}, } var _ = (fs.NodeReaddirer)((*ITNode)(nil)) // Readdir is part of the NodeReaddirer interface func (n *ITNode) Readdir(ctx context.Context) (fs.DirStream, syscall.Errno) { switch n.kind { case 0: // root folder r := make([]fuse.DirEntry, 2) r[0] = fuse.DirEntry{ Name: "device", Ino: 0, Mode: fuse.S_IFDIR, } r[1] = fuse.DirEntry{ Name: "fs", Ino: 1, Mode: fuse.S_IFDIR, } return fs.NewListDirStream(r), 0 case 1: // device folder r := make([]fuse.DirEntry, 6) for ind, value := range properties { r[ind] = fuse.DirEntry{ Name: value.name, Ino: value.Ino, Mode: fuse.S_IFREG, } } return fs.NewListDirStream(r), 0 } r := make([]fuse.DirEntry, 0) return fs.NewListDirStream(r), 0 } var _ = (fs.NodeLookuper)((*ITNode)(nil)) func (n *ITNode) Lookup(ctx context.Context, name string, out *fuse.EntryOut) (*fs.Inode, syscall.Errno) { switch n.kind { case 0: // root folder if name == "device" { stable := fs.StableAttr{ Mode: fuse.S_IFDIR, Ino: uint64(0), } operations := &ITNode{kind: 1, Ino: 0} child := n.NewInode(ctx, operations, stable) return child, 0 } else if name == "fs" { stable := fs.StableAttr{ Mode: fuse.S_IFDIR, Ino: uint64(1), } operations := &ITNode{kind: 2, Ino: 1} child := n.NewInode(ctx, operations, stable) return child, 0 } case 1: // device folder for _, value := range properties { if value.name == name { stable := fs.StableAttr{ Mode: fuse.S_IFREG, Ino: uint64(value.Ino), } operations := &ITNode{kind: 3, Ino: value.Ino} child := n.NewInode(ctx, operations, stable) return child, 0 } } return nil, syscall.ENOENT } return nil, syscall.ENOENT } func main() { // This is where we'll mount the FS mntDir := "/tmp/x" os.Mkdir(mntDir, 0755) root := &ITNode{kind: 0} server, err := fs.Mount(mntDir, root, &fs.Options{ MountOptions: fuse.MountOptions{ // Set to true to see how the file system works. Debug: false, }, }) if err != nil { log.Panic(err) } log.Printf("Mounted on %s", mntDir) log.Printf("Unmount by calling 'fusermount -u %s'", mntDir) // Wait until unmount before exiting server.Wait() }