More work on mounting interface

database.go

@@ -23,6 +23,7 @@
 package main
 
 import (
+	"bazil.org/fuse/fs"
 	"io/ioutil"
 	"path/filepath"
 )
@@ -41,6 +42,10 @@ func newDatabase(dir string) (*database, error) {
 	return db, nil
 }
 
+func (this *database) Root() (fs.Node, error) {
+	return this.lastVersion(), nil
+}
+
 func (this *database) load(dir string) error {
 	base, err := filepath.Abs(dir)
 	if err != nil {
@@ -52,7 +57,7 @@ func (this *database) load(dir string) error {
 		return err
 	}
 
-	vers, err := this.version(dirs)
+	vers, err := this.versions(dirs)
 	if err != nil {
 		return err
 	}
@@ -67,7 +72,7 @@ func (this *database) save() error {
 	return nil
 }
 
-func (this *database) version(dirs []string) ([]*version, error) {
+func (this *database) versions(dirs []string) ([]*version, error) {
 	var vers []*version
 
 	var parent *version
@@ -84,6 +89,15 @@ func (this *database) version(dirs []string) ([]*version, error) {
 	return vers, nil
 }
 
+func (this *database) lastVersion() *version {
+	count := len(this.vers)
+	if count == 0 {
+		return nil
+	}
+
+	return this.vers[count-1]
+}
+
 func (this *database) scan(dir string) ([]string, error) {
 	nodes, err := ioutil.ReadDir(dir)
 	if err != nil {

version.go

@@ -23,8 +23,11 @@
 package main
 
 import (
+	"bazil.org/fuse"
+	"bazil.org/fuse/fs"
 	"encoding/json"
 	"fmt"
+	"golang.org/x/net/context"
 	"io/ioutil"
 	"os"
 	"path/filepath"
@@ -72,6 +75,40 @@ func newVersion(base string, parent *version) (*version, error) {
 	return ver, nil
 }
 
+func (this *version) Attr(a *fuse.Attr) {
+	// type Attr struct {
+	// Inode  uint64      // inode number
+	// Size   uint64      // size in bytes
+	// Blocks uint64      // size in blocks
+	// Atime  time.Time   // time of last access
+	// Mtime  time.Time   // time of last modification
+	// Ctime  time.Time   // time of last inode change
+	// Crtime time.Time   // time of creation (OS X only)
+	// Mode   os.FileMode // file mode
+	// Nlink  uint32      // number of links
+	// Uid    uint32      // owner uid
+	// Gid    uint32      // group gid
+	// Rdev   uint32      // device numbers
+	// Flags  uint32      // chflags(2) flags (OS X only)
+	a.Inode = 1
+	a.Mode = os.ModeDir | 0755
+}
+
+func (this *version) Lookup(ctx context.Context, name string) (fs.Node, error) {
+	// if name == "hello" {
+	// 	return File{}, nil
+	// }
+	return nil, fuse.ENOENT
+}
+
+func (this *version) ReadDirAll(ctx context.Context) ([]fuse.Dirent, error) {
+	var dirDirs = []fuse.Dirent{
+		{Inode: 2, Name: "hello", Type: fuse.DT_File},
+	}
+
+	return dirDirs, nil
+}
+
 func (this *version) loadMetadata() error {
 	path := this.metadataPath()
 	if _, err := os.Stat(path); os.IsNotExist(err) {