kotovalexarian-likes-github/moby--moby
1
0
Fork 0
mirror of https://github.com/moby/moby.git synced 2022-11-09 12:21:53 -05:00
Code Releases Activity

Fix migration diffid atomic write

Browse source 
Fixes #20267

Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
(cherry picked from commit 056013f97b)
This commit is contained in:
Tonis Tiigi 2016-02-16 11:43:23 -08:00 • committed by Tibor Vass
parent 64368c438a
commit 77f94fd3c5
1 changed files with 11 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

13
migrate/v1/migratev1.go
View file

@ -160,7 +160,12 @@ func calculateLayerChecksum(graphDir, id string, ls checksumCalculator) error {
return err
}
if err := ioutil.WriteFile(filepath.Join(graphDir, id, migrationDiffIDFileName), []byte(diffID), 0600); err != nil {
tmpFile := filepath.Join(graphDir, id, migrationDiffIDFileName+".tmp")
if err := ioutil.WriteFile(tmpFile, []byte(diffID), 0600); err != nil {
return err
}
if err := os.Rename(tmpFile, filepath.Join(graphDir, id, migrationDiffIDFileName)); err != nil {
return err
}
@ -423,7 +428,11 @@ func migrateImage(id, root string, ls graphIDRegistrar, is image.Store, ms metad
history = parentImg.History
}
diffID, err := ioutil.ReadFile(filepath.Join(root, graphDirName, id, migrationDiffIDFileName))
diffIDData, err := ioutil.ReadFile(filepath.Join(root, graphDirName, id, migrationDiffIDFileName))
if err != nil {
return err
}
diffID, err := digest.ParseDigest(string(diffIDData))
if err != nil {
return err
}