v2api: move helpers from node.go to node_helpers.go

internal/fusefrontend/node.go

@@ -3,7 +3,6 @@ package fusefrontend
 import (
 	"context"
 	"os"
-	"path/filepath"
 	"syscall"
 
 	"golang.org/x/sys/unix"
@@ -22,40 +21,6 @@ type Node struct {
 	fs.Inode
 }
 
-// Path returns the relative plaintext path of this node
-func (n *Node) Path() string {
-	return n.Inode.Path(n.Root())
-}
-
-// rootNode returns the Root Node of the filesystem.
-func (n *Node) rootNode() *RootNode {
-	return n.Root().Operations().(*RootNode)
-}
-
-// prepareAtSyscall returns a (dirfd, cName) pair that can be used
-// with the "___at" family of system calls (openat, fstatat, unlinkat...) to
-// access the backing encrypted directory.
-//
-// If you pass a `child` file name, the (dirfd, cName) pair will refer to
-// a child of this node.
-// If `child` is empty, the (dirfd, cName) pair refers to this node itself.
-func (n *Node) prepareAtSyscall(child string) (dirfd int, cName string, errno syscall.Errno) {
-	p := n.Path()
-	if child != "" {
-		p = filepath.Join(p, child)
-	}
-	rn := n.rootNode()
-	if rn.isFiltered(p) {
-		errno = syscall.EPERM
-		return
-	}
-	dirfd, cName, err := rn.openBackingDir(p)
-	if err != nil {
-		errno = fs.ToErrno(err)
-	}
-	return
-}
-
 // Lookup - FUSE call for discovering a file.
 func (n *Node) Lookup(ctx context.Context, name string, out *fuse.EntryOut) (ch *fs.Inode, errno syscall.Errno) {
 	dirfd, cName, errno := n.prepareAtSyscall(name)
@@ -113,23 +78,6 @@ func (n *Node) Getattr(ctx context.Context, f fs.FileHandle, out *fuse.AttrOut)
 	return 0
 }
 
-// newChild attaches a new child inode to n.
-// The passed-in `st` will be modified to get a unique inode number.
-func (n *Node) newChild(ctx context.Context, st *syscall.Stat_t, out *fuse.EntryOut) *fs.Inode {
-	// Get unique inode number
-	rn := n.rootNode()
-	rn.inoMap.TranslateStat(st)
-	out.Attr.FromStat(st)
-	// Create child node
-	id := fs.StableAttr{
-		Mode: uint32(st.Mode),
-		Gen:  1,
-		Ino:  st.Ino,
-	}
-	node := &Node{}
-	return n.NewInode(ctx, node, id)
-}
-
 // Create - FUSE call. Creates a new file.
 //
 // Symlink-safe through the use of Openat().

internal/fusefrontend/node_helpers.go

@@ -2,6 +2,7 @@ package fusefrontend
 
 import (
 	"context"
+	"path/filepath"
 	"syscall"
 
 	"github.com/hanwen/go-fuse/v2/fs"
@@ -63,3 +64,54 @@ func (n *Node) translateSize(dirfd int, cName string, out *fuse.Attr) {
 		out.Size = uint64(len(target))
 	}
 }
+
+// Path returns the relative plaintext path of this node
+func (n *Node) Path() string {
+	return n.Inode.Path(n.Root())
+}
+
+// rootNode returns the Root Node of the filesystem.
+func (n *Node) rootNode() *RootNode {
+	return n.Root().Operations().(*RootNode)
+}
+
+// prepareAtSyscall returns a (dirfd, cName) pair that can be used
+// with the "___at" family of system calls (openat, fstatat, unlinkat...) to
+// access the backing encrypted directory.
+//
+// If you pass a `child` file name, the (dirfd, cName) pair will refer to
+// a child of this node.
+// If `child` is empty, the (dirfd, cName) pair refers to this node itself.
+func (n *Node) prepareAtSyscall(child string) (dirfd int, cName string, errno syscall.Errno) {
+	p := n.Path()
+	if child != "" {
+		p = filepath.Join(p, child)
+	}
+	rn := n.rootNode()
+	if rn.isFiltered(p) {
+		errno = syscall.EPERM
+		return
+	}
+	dirfd, cName, err := rn.openBackingDir(p)
+	if err != nil {
+		errno = fs.ToErrno(err)
+	}
+	return
+}
+
+// newChild attaches a new child inode to n.
+// The passed-in `st` will be modified to get a unique inode number.
+func (n *Node) newChild(ctx context.Context, st *syscall.Stat_t, out *fuse.EntryOut) *fs.Inode {
+	// Get unique inode number
+	rn := n.rootNode()
+	rn.inoMap.TranslateStat(st)
+	out.Attr.FromStat(st)
+	// Create child node
+	id := fs.StableAttr{
+		Mode: uint32(st.Mode),
+		Gen:  1,
+		Ino:  st.Ino,
+	}
+	node := &Node{}
+	return n.NewInode(ctx, node, id)
+}