octoleo/restic
2
2
Fork 0
mirror of https://github.com/octoleo/restic.git synced 2024-12-22 10:58:55 +00:00
Code Issues Releases Wiki Activity

Create parent directories for restore items

Browse Source 
When restoring an item fails with ENOENT, create parent directories and
try again. This is needed for restoring partial trees (as in: the Filter
function didn't return true for the paths leading up to this restore
item).
This commit is contained in:
Sebastian Schmidt 2015-01-01 16:17:33 +01:00
parent fb874ea7cc
commit bd43e27deb
1 changed files with 17 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
restorer.go
View File

@ -5,6 +5,7 @@ import (
"fmt"
"os"
"path/filepath"
"syscall"
"github.com/juju/arrar"
"github.com/restic/restic/backend"
@ -53,6 +54,22 @@ func (res *Restorer) to(dst string, dir string, tree_id backend.ID) error {
if res.Filter == nil ||
res.Filter(filepath.Join(res.sn.Dir, dir, node.Name), dstpath, node) {
err := node.CreateAt(res.ch, dstpath)
// Did it fail because of ENOENT?
if arrar.Check(err, func(err error) bool {
if pe, ok := err.(*os.PathError); ok {
errn, ok := pe.Err.(syscall.Errno)
return ok && errn == syscall.ENOENT
}
return false
}) {
// Create parent directories and retry
err = os.MkdirAll(filepath.Dir(dstpath), 0700)
if err == nil || err == os.ErrExist {
err = node.CreateAt(res.ch, dstpath)
}
}
if err != nil {
err = res.Error(dstpath, node, arrar.Annotate(err, "create node"))
if err != nil {
@ -83,11 +100,6 @@ func (res *Restorer) to(dst string, dir string, tree_id backend.ID) error {
// RestoreTo creates the directories and files in the snapshot below dir.
// Before an item is created, res.Filter is called.
func (res *Restorer) RestoreTo(dir string) error {
err := os.MkdirAll(dir, 0700)
if err != nil && err != os.ErrExist {
return err
}
return res.to(dir, "", res.sn.Tree)
}