From 6a110b8dde07a4bfa967547be8bf5b3756511a8b Mon Sep 17 00:00:00 2001
From: Jakob Unterwurzacher
Date: Thu, 3 Sep 2015 23:54:12 +0200
Subject: Mounts and show an empty dir

---
 frontend/fs.go   | 10 +++++--
 frontend/node.go | 79 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 87 insertions(+), 2 deletions(-)
 create mode 100644 frontend/node.go

(limited to 'frontend')

diff --git a/frontend/fs.go b/frontend/fs.go
index 4ce3e5c..637d134 100644
--- a/frontend/fs.go
+++ b/frontend/fs.go
@@ -7,14 +7,20 @@ import (
 
 type FS struct {
 	*cryptfs.FS
+	backing string
 }
 
-func New(key [16]byte) *FS {
+func New(key [16]byte, b string) *FS {
 	return &FS {
 		FS: cryptfs.NewFS(key),
+		backing: b,
 	}
 }
 
 func (fs *FS) Root() (fs.Node, error) {
-	return nil, nil
+	n := Node{
+		backing: "",
+		parentFS: fs,
+	}
+	return n, nil
 }
diff --git a/frontend/node.go b/frontend/node.go
new file mode 100644
index 0000000..53ffb26
--- /dev/null
+++ b/frontend/node.go
@@ -0,0 +1,79 @@
+package frontend
+
+import (
+	"fmt"
+	"os"
+	"time"
+	"syscall"
+	"io/ioutil"
+	"path"
+
+	"golang.org/x/net/context"
+
+	//"github.com/rfjakob/gocryptfs/cryptfs"
+	"bazil.org/fuse"
+	"bazil.org/fuse/fs"
+)
+
+
+type Node struct {
+	fs.NodeRef
+	backing string
+	parentFS *FS
+}
+
+func StatToAttr(s *syscall.Stat_t, a *fuse.Attr) {
+	a.Inode = s.Ino
+	a.Size = uint64(s.Size)
+	a.Blocks = uint64(s.Blocks)
+	a.Atime = time.Unix(s.Atim.Sec, s.Atim.Nsec)
+	a.Mtime = time.Unix(s.Mtim.Sec, s.Mtim.Nsec)
+	a.Ctime = time.Unix(s.Ctim.Sec, s.Ctim.Nsec)
+	a.Mode = os.FileMode(s.Mode) | os.ModeDir
+	a.Nlink = uint32(s.Nlink)
+	a.Uid = uint32(s.Uid)
+	a.Gid = uint32(s.Gid)
+	a.Rdev = uint32(s.Rdev)
+}
+
+func (n Node) Attr(ctx context.Context, attr *fuse.Attr) error {
+	var err error
+	var st syscall.Stat_t
+	if n.backing == "" {
+		// When GetAttr is called for the toplevel directory, we always want
+		// to look through symlinks.
+		fmt.Printf("Attr %s\n", n.parentFS.backing)
+		//err = syscall.Stat(n.parentFS.backing, &st)
+		err = syscall.Stat("/", &st)
+	} else {
+		fmt.Printf("Attr %s\n", path.Join(n.parentFS.backing, n.backing))
+		p := path.Join(n.parentFS.backing, n.backing)
+		err = syscall.Lstat(p, &st)
+	}
+	if err != nil {
+		return err
+	}
+	StatToAttr(&st, attr)
+	return nil
+}
+
+func (n *Node) ReadDirAll(ctx context.Context) ([]fuse.Dirent, error) {
+	entries, err := ioutil.ReadDir(n.backing)
+	if err != nil {
+		return nil, err
+	}
+	var fuseEntries []fuse.Dirent
+	for _, e := range entries {
+		var d fuse.Dirent
+		d.Name = e.Name()
+		fuseEntries = append(fuseEntries, d)
+	}
+	return fuseEntries, err
+}
+
+func (n *Node) Lookup(ctx context.Context, name string) (fs.Node, error) {
+	if name == "hello" {
+		return Node{}, nil
+	}
+	return nil, fuse.ENOENT
+}
-- 
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