mirror of https://github.com/octoleo/restic.git
110 lines
2.4 KiB
Go
110 lines
2.4 KiB
Go
// +build !openbsd
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// +build !windows
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package fuse
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import (
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"fmt"
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"os"
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"time"
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"github.com/restic/restic/internal/debug"
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"github.com/restic/restic/internal/restic"
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"golang.org/x/net/context"
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"bazil.org/fuse"
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"bazil.org/fuse/fs"
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)
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// SnapshotsDir is a fuse directory which contains snapshots.
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type SnapshotsDir struct {
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inode uint64
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root *Root
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snapshots restic.Snapshots
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names map[string]*restic.Snapshot
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}
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// ensure that *DirSnapshots implements these interfaces
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var _ = fs.HandleReadDirAller(&SnapshotsDir{})
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var _ = fs.NodeStringLookuper(&SnapshotsDir{})
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// NewSnapshotsDir returns a new directory containing snapshots.
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func NewSnapshotsDir(root *Root, inode uint64, snapshots restic.Snapshots) *SnapshotsDir {
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debug.Log("create snapshots dir with %d snapshots, inode %d", len(snapshots), inode)
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d := &SnapshotsDir{
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root: root,
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inode: inode,
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snapshots: snapshots,
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names: make(map[string]*restic.Snapshot, len(snapshots)),
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}
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for _, sn := range snapshots {
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name := sn.Time.Format(time.RFC3339)
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for i := 1; ; i++ {
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if _, ok := d.names[name]; !ok {
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break
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}
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name = fmt.Sprintf("%s-%d", sn.Time.Format(time.RFC3339), i)
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}
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d.names[name] = sn
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debug.Log(" add snapshot %v as dir %v", sn.ID().Str(), name)
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}
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return d
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}
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// Attr returns the attributes for the root node.
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func (d *SnapshotsDir) Attr(ctx context.Context, attr *fuse.Attr) error {
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attr.Inode = d.inode
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attr.Mode = os.ModeDir | 0555
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if !d.root.cfg.OwnerIsRoot {
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attr.Uid = uint32(os.Getuid())
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attr.Gid = uint32(os.Getgid())
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}
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debug.Log("attr: %v", attr)
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return nil
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}
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// ReadDirAll returns all entries of the root node.
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func (d *SnapshotsDir) ReadDirAll(ctx context.Context) ([]fuse.Dirent, error) {
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debug.Log("ReadDirAll()")
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items := []fuse.Dirent{
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{
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Inode: d.inode,
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Name: ".",
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Type: fuse.DT_Dir,
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},
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{
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Inode: d.root.inode,
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Name: "..",
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Type: fuse.DT_Dir,
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},
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}
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for name := range d.names {
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items = append(items, fuse.Dirent{
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Inode: fs.GenerateDynamicInode(d.inode, name),
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Name: name,
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Type: fuse.DT_Dir,
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})
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}
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return items, nil
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}
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// Lookup returns a specific entry from the root node.
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func (d *SnapshotsDir) Lookup(ctx context.Context, name string) (fs.Node, error) {
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debug.Log("Lookup(%s)", name)
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sn, ok := d.names[name]
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if !ok {
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return nil, fuse.ENOENT
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}
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return newDirFromSnapshot(ctx, d.root, fs.GenerateDynamicInode(d.inode, name), sn)
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}
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