From 6f90ec716a0e486628297a8d74e9f4d8d895e744 Mon Sep 17 00:00:00 2001
From: Jakob Unterwurzacher
Date: Fri, 4 Sep 2015 20:31:06 +0200
Subject: Rebase to cluefs

https://github.com/airnandez/cluefs
---
 frontend/dir.go  |  10 ++++++
 frontend/file.go |   4 ++-
 frontend/fs.go   |  29 +++++++--------
 frontend/node.go | 108 ++-----------------------------------------------------
 4 files changed, 30 insertions(+), 121 deletions(-)
 create mode 100644 frontend/dir.go

(limited to 'frontend')

diff --git a/frontend/dir.go b/frontend/dir.go
new file mode 100644
index 0000000..4703df9
--- /dev/null
+++ b/frontend/dir.go
@@ -0,0 +1,10 @@
+package frontend
+
+import (
+	//"github.com/rfjakob/gocryptfs/cryptfs"
+	"github.com/rfjakob/cluefs/lib/cluefs"
+)
+
+type Dir struct {
+	*cluefs.Dir
+}
diff --git a/frontend/file.go b/frontend/file.go
index 7b292bd..81590e8 100644
--- a/frontend/file.go
+++ b/frontend/file.go
@@ -2,8 +2,10 @@ package frontend
 
 import (
 	"github.com/rfjakob/gocryptfs/cryptfs"
+	"github.com/rfjakob/cluefs/lib/cluefs"
 )
 
 type File struct {
-	cryptfs.File
+	*cryptfs.CryptFile
+	*cluefs.File
 }
diff --git a/frontend/fs.go b/frontend/fs.go
index 637d134..ba6ad09 100644
--- a/frontend/fs.go
+++ b/frontend/fs.go
@@ -2,25 +2,26 @@ package frontend
 
 import (
 	"github.com/rfjakob/gocryptfs/cryptfs"
-	"bazil.org/fuse/fs"
+	"github.com/rfjakob/cluefs/lib/cluefs"
 )
 
 type FS struct {
-	*cryptfs.FS
-	backing string
+	*cryptfs.CryptFS
+	*cluefs.ClueFS
 }
 
-func New(key [16]byte, b string) *FS {
-	return &FS {
-		FS: cryptfs.NewFS(key),
-		backing: b,
-	}
-}
+type nullTracer struct {}
 
-func (fs *FS) Root() (fs.Node, error) {
-	n := Node{
-		backing: "",
-		parentFS: fs,
+func (nullTracer) Trace(op cluefs.FsOperTracer) {}
+
+func NewFS(key [16]byte, backing string) *FS {
+	var nt nullTracer
+	clfs, err := cluefs.NewClueFS(backing, nt)
+	if err != nil {
+		panic(err)
+	}
+	return &FS {
+		CryptFS: cryptfs.NewCryptFS(key),
+		ClueFS: clfs,
 	}
-	return n, nil
 }
diff --git a/frontend/node.go b/frontend/node.go
index 833be2e..7218d54 100644
--- a/frontend/node.go
+++ b/frontend/node.go
@@ -1,113 +1,9 @@
 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"
+	"github.com/rfjakob/cluefs/lib/cluefs"
 )
 
-
 type Node struct {
-	fs.NodeRef
-	backing string
-	parentFS *FS
-}
-
-// FileModeFromStat - create os.FileMode from stat value
-// For some reason, they use different constants.
-// Adapted from https://golang.org/src/os/stat_linux.go
-func FileModeFromStat(st *syscall.Stat_t) os.FileMode {
-	fileMode := os.FileMode(st.Mode & 0777)
-	switch st.Mode & syscall.S_IFMT {
-	case syscall.S_IFBLK:
-		fileMode |= os.ModeDevice
-	case syscall.S_IFCHR:
-		fileMode |= os.ModeDevice | os.ModeCharDevice
-	case syscall.S_IFDIR:
-		fileMode |= os.ModeDir
-	case syscall.S_IFIFO:
-		fileMode |= os.ModeNamedPipe
-	case syscall.S_IFLNK:
-		fileMode |= os.ModeSymlink
-	case syscall.S_IFREG:
-		// nothing to do
-	case syscall.S_IFSOCK:
-		fileMode |= os.ModeSocket
-	}
-	if st.Mode & syscall.S_ISGID != 0 {
-		fileMode |= os.ModeSetgid
-	}
-	if st.Mode & syscall.S_ISUID != 0 {
-		fileMode |= os.ModeSetuid
-	}
-	if st.Mode & syscall.S_ISVTX != 0 {
-		fileMode |= os.ModeSticky
-	}
-	return fileMode
-}
-
-
-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 = FileModeFromStat(s)
-	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
+	*cluefs.Node
 }
-- 
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