// Open opens the local backend as specified by config.
func Open(dir string) (*Local, error) {
// test if all necessary dirs are there
for _, d := range paths(dir) {
if _, err := fs.Stat(d); err != nil {
return nil, errors.Wrap(err, "Open")
}
}
return &Local{p: dir}, nil
}
// Save stores data in the backend at the handle.
func (b *Local) Save(h restic.Handle, p []byte) (err error) {
debug.Log("Save %v, length %v", h, len(p))
if err := h.Valid(); err != nil {
return err
}
tmpfile, err := writeToTempfile(filepath.Join(b.p, backend.Paths.Temp), p)
debug.Log("saved %v (%d bytes) to %v", h, len(p), tmpfile)
if err != nil {
return err
}
filename := filename(b.p, h.Type, h.Name)
// test if new path already exists
if _, err := fs.Stat(filename); err == nil {
return errors.Errorf("Rename(): file %v already exists", filename)
}
// create directories if necessary, ignore errors
if h.Type == restic.DataFile {
err = fs.MkdirAll(filepath.Dir(filename), backend.Modes.Dir)
if err != nil {
return errors.Wrap(err, "MkdirAll")
}
}
err = fs.Rename(tmpfile, filename)
debug.Log("save %v: rename %v -> %v: %v",
h, filepath.Base(tmpfile), filepath.Base(filename), err)
if err != nil {
return errors.Wrap(err, "Rename")
}
// set mode to read-only
fi, err := fs.Stat(filename)
if err != nil {
return errors.Wrap(err, "Stat")
}
return setNewFileMode(filename, fi)
}
// Test returns true if a blob of the given type and name exists in the backend.
func (b *Local) Test(t restic.FileType, name string) (bool, error) {
debug.Log("Test %v %v", t, name)
_, err := fs.Stat(filename(b.p, t, name))
if err != nil {
if os.IsNotExist(errors.Cause(err)) {
return false, nil
}
return false, errors.Wrap(err, "Stat")
}
return true, nil
}
// Stat returns information about a blob.
func (b *Local) Stat(h restic.Handle) (restic.FileInfo, error) {
debug.Log("Stat %v", h)
if err := h.Valid(); err != nil {
return restic.FileInfo{}, err
}
fi, err := fs.Stat(filename(b.p, h.Type, h.Name))
if err != nil {
return restic.FileInfo{}, errors.Wrap(err, "Stat")
}
return restic.FileInfo{Size: fi.Size()}, nil
}
func mount(opts MountOptions, gopts GlobalOptions, mountpoint string) error {
debug.Log("start mount")
defer debug.Log("finish mount")
repo, err := OpenRepository(gopts)
if err != nil {
return err
}
err = repo.LoadIndex()
if err != nil {
return err
}
if _, err := resticfs.Stat(mountpoint); os.IsNotExist(errors.Cause(err)) {
Verbosef("Mountpoint %s doesn't exist, creating it\n", mountpoint)
err = resticfs.Mkdir(mountpoint, os.ModeDir|0700)
if err != nil {
return err
}
}
c, err := systemFuse.Mount(
mountpoint,
systemFuse.ReadOnly(),
systemFuse.FSName("restic"),
)
if err != nil {
return err
}
Printf("Now serving the repository at %s\n", mountpoint)
Printf("Don't forget to umount after quitting!\n")
root := fs.Tree{}
root.Add("snapshots", fuse.NewSnapshotsDir(repo, opts.OwnerRoot))
debug.Log("serving mount at %v", mountpoint)
err = fs.Serve(c, &root)
if err != nil {
return err
}
<-c.Ready
return c.MountError
}
