git-annex/Database/Init.hs
Joey Hess f971b199ed
fix init .git/annex/ perms for core.sharedRepository
init: Bug fix: Create .git/annex/ and .git/annex/fsckdb/ directories with
permissions configured by core.sharedRepository.

The fsckfb being created happens to create .git/annex/ and it was not using
createAnnexDirectory. Probably a reversion partly, but maybe the database
directory was always created not honoring core.sharedRepository?

Sponsored-by: Noam Kremen on Patreon
2023-04-26 16:14:21 -04:00

57 lines
1.8 KiB
Haskell

{- Persistent sqlite database initialization
-
- Copyright 2015-2020 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU AGPL version 3 or higher.
-}
{-# LANGUAGE OverloadedStrings #-}
module Database.Init where
import Annex.Common
import Annex.Perms
import Utility.FileMode
import qualified Utility.RawFilePath as R
import Database.Persist.Sqlite
import Lens.Micro
import qualified Data.Text as T
import qualified System.FilePath.ByteString as P
{- Ensures that the database is freshly initialized. Deletes any
- existing database. Pass the migration action for the database.
-
- The permissions of the database are set based on the
- core.sharedRepository setting. Setting these permissions on the main db
- file causes Sqlite to always use the same permissions for additional
- files it writes later on
-}
initDb :: P.RawFilePath -> SqlPersistM () -> Annex ()
initDb db migration = do
let dbdir = P.takeDirectory db
let tmpdbdir = dbdir <> ".tmp"
let tmpdb = tmpdbdir P.</> "db"
let tdb = T.pack (fromRawFilePath tmpdb)
createAnnexDirectory tmpdbdir
liftIO $ runSqliteInfo (enableWAL tdb) migration
setAnnexDirPerm tmpdbdir
-- Work around sqlite bug that prevents it from honoring
-- less restrictive umasks.
liftIO $ R.setFileMode tmpdb =<< defaultFileMode
setAnnexFilePerm tmpdb
liftIO $ do
void $ tryIO $ removeDirectoryRecursive (fromRawFilePath dbdir)
R.rename tmpdbdir dbdir
{- Make sure that the database uses WAL mode, to prevent readers
- from blocking writers, and prevent a writer from blocking readers.
-
- This is the default in recent persistent-sqlite versions, but
- force it on just in case.
-
- Note that once WAL mode is enabled, it will persist whenever the
- database is opened. -}
enableWAL :: T.Text -> SqliteConnectionInfo
enableWAL db = over walEnabled (const True) $
mkSqliteConnectionInfo db