mirror of https://github.com/restic/restic.git
104 lines
2.0 KiB
Go
104 lines
2.0 KiB
Go
package fuse
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import (
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"os"
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"bazil.org/fuse"
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"bazil.org/fuse/fs"
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"golang.org/x/net/context"
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"github.com/restic/restic"
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"github.com/restic/restic/repository"
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)
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// Statically ensure that *dir implement those interface
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var _ = fs.HandleReadDirAller(&dir{})
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var _ = fs.NodeStringLookuper(&dir{})
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type dir struct {
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repo *repository.Repository
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items map[string]*restic.Node
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inode uint64
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}
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func newDir(repo *repository.Repository, node *restic.Node) (*dir, error) {
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tree, err := restic.LoadTree(repo, *node.Subtree)
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if err != nil {
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return nil, err
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}
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items := make(map[string]*restic.Node)
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for _, node := range tree.Nodes {
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items[node.Name] = node
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}
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return &dir{
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repo: repo,
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items: items,
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inode: node.Inode,
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}, nil
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}
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func newDirFromSnapshot(repo *repository.Repository, snapshot SnapshotWithId) (*dir, error) {
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tree, err := restic.LoadTree(repo, *snapshot.Tree)
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if err != nil {
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return nil, err
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}
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items := make(map[string]*restic.Node)
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for _, node := range tree.Nodes {
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items[node.Name] = node
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}
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return &dir{
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repo: repo,
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items: items,
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inode: inodeFromBackendId(snapshot.ID),
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}, nil
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}
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func (d *dir) Attr(ctx context.Context, a *fuse.Attr) error {
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a.Inode = d.inode
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a.Mode = os.ModeDir | 0555
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return nil
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}
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func (d *dir) ReadDirAll(ctx context.Context) ([]fuse.Dirent, error) {
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ret := make([]fuse.Dirent, 0, len(d.items))
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for _, node := range d.items {
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var typ fuse.DirentType
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switch node.Type {
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case "dir":
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typ = fuse.DT_Dir
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case "file":
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typ = fuse.DT_File
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case "symlink":
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typ = fuse.DT_Link
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}
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ret = append(ret, fuse.Dirent{
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Inode: node.Inode,
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Type: typ,
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Name: node.Name,
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})
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}
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return ret, nil
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}
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func (d *dir) Lookup(ctx context.Context, name string) (fs.Node, error) {
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node, ok := d.items[name]
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if !ok {
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return nil, fuse.ENOENT
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}
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switch node.Type {
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case "dir":
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return newDir(d.repo, node)
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case "file":
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return newFile(d.repo, node)
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case "symlink":
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return newLink(d.repo, node)
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default:
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return nil, fuse.ENOENT
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}
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}
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