Initial commit

ffs/furresdir.go

@@ -0,0 +1,133 @@
+package ffs
+
+import (
+	"context"
+	"fmt"
+	"fusetest/furcadia"
+	"os"
+	"syscall"
+	"time"
+
+	"bazil.org/fuse"
+	"bazil.org/fuse/fs"
+)
+
+///////////////////////////////////////////////////////////////////////////////////////////////////
+// CONSTANTS //////////////////////////////////////////////////////////////////////////////////////
+///////////////////////////////////////////////////////////////////////////////////////////////////
+
+const (
+	FURRES_DIR_INODE_BASE = 0x1000
+	FURRES_DIR_MAX_INODES = 0x1000
+)
+
+///////////////////////////////////////////////////////////////////////////////////////////////////
+// TYPE: DreamsDir ////////////////////////////////////////////////////////////////////////////////
+///////////////////////////////////////////////////////////////////////////////////////////////////
+
+type FurresDir struct {
+	_attr    fuse.Attr
+	_entries []fuse.Dirent
+	_index   map[string]int
+}
+
+func NewFurresDir(inodeBase uint64, rootUID, rootGID uint32) *FurresDir {
+	now := time.Now()
+	dir := &FurresDir{
+		_attr: fuse.Attr{
+			Inode: inodeBase,
+			Nlink: 1,
+			Mode:  os.ModeDir | 0500,
+			Uid:   rootUID,
+			Gid:   rootGID,
+			Atime: now,
+			Ctime: now,
+			Mtime: now,
+		},
+		_index: make(map[string]int),
+	}
+
+	// add basic entries
+	dir._entries = append(
+		dir._entries,
+		fuse.Dirent{Inode: dir._attr.Inode, Name: ".", Type: fuse.DT_Dir},
+		fuse.Dirent{Inode: ROOT_INODE, Name: "..", Type: fuse.DT_Dir},
+	)
+
+	// add basic entries to the index
+	for i := range dir._entries {
+		dirent := &dir._entries[i]
+		dir._index[dirent.Name] = i
+	}
+
+	return dir
+}
+
+func (d *FurresDir) GetAttr() *fuse.Attr {
+	return &d._attr
+}
+
+func (d *FurresDir) Attr(ctx context.Context, a *fuse.Attr) error {
+	*a = d._attr
+	return nil
+}
+
+func (d *FurresDir) ReadDirAll(ctx context.Context) ([]fuse.Dirent, error) {
+	return d._entries, nil
+	// pounce := G_FS._pounce
+	// furres := pounce.Furres
+	// items := make([]fuse.Dirent, len(furres)+2)
+
+	// items[0] = fuse.Dirent{Inode: d._attr.Inode, Name: ".", Type: fuse.DT_Dir}
+	// items[1] = fuse.Dirent{Inode: ROOT_INODE, Name: "..", Type: fuse.DT_Dir}
+
+	// var i uint64 = 2
+	// for _, furre := range furres {
+	// 	items[i] = fuse.Dirent{
+	// 		Inode: d._attr.Inode + i - 1,
+	// 		Name:  furre.DisplayName,
+	// 		Type:  fuse.DT_File,
+	// 	}
+	// 	i++
+	// }
+
+	// return items, nil
+}
+
+func (d *FurresDir) Lookup(ctx context.Context, name string) (fs.Node, error) {
+	if name == "." {
+		return d, nil
+	}
+
+	// find dirent for the given name
+
+	direntIndex, exists = d._index[name]
+	if !exists {
+		return nil, syscall.ENOENT
+	}
+
+	furres := G_FS._pounce.Furres
+	shortname := furcadia.GetShortName(name)
+	furre, exists := furres[shortname]
+	if !exists {
+		fmt.Printf("[F] FurresDir().Lookup('%v' -> %v): ENOENT\n", name, shortname)
+		return nil, syscall.ENOENT
+	}
+
+	fmt.Printf("[F] FurresDir().Lookup('%v'): OK\n", name)
+	now := time.Now()
+	return &FurreFile{
+		Furre: furre,
+		_attr: fuse.Attr{
+			Inode: 0,
+			Nlink: 1,
+			Mode:  0400,
+			Size:  0,
+			Ctime: now,
+			Atime: now,
+			Mtime: now,
+			Uid:   d._attr.Uid,
+			Gid:   d._attr.Gid,
+		},
+	}, nil
+}