git-annex/Backend/WORM.hs
Joey Hess 341269e035 git-annex (4.20130815) unstable; urgency=low
* assistant, watcher: .gitignore files and other git ignores are now
    honored, when git 1.8.4 or newer is installed.
    (Thanks, Adam Spiers, for getting the necessary support into git for this.)
  * importfeed: Ignores transient problems with feeds. Only exits nonzero
    when a feed has repeatedly had a problems for at least 1 day.
  * importfeed: Fix handling of dots in extensions.
  * Windows: Added support for encrypted special remotes.
  * Windows: Fixed permissions problem that prevented removing files
    from directory special remote. Directory special remotes now fully usable.

# imported from the archive
2013-08-15 04:14:33 -04:00

41 lines
1,023 B
Haskell

{- git-annex "WORM" backend -- Write Once, Read Many
-
- Copyright 2010 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Backend.WORM (backends) where
import Common.Annex
import Types.Backend
import Types.Key
import Types.KeySource
backends :: [Backend]
backends = [backend]
backend :: Backend
backend = Backend
{ name = "WORM"
, getKey = keyValue
, fsckKey = Nothing
, canUpgradeKey = Nothing
}
{- The key includes the file size, modification time, and the
- basename of the filename.
-
- That allows multiple files with the same names to have different keys,
- while also allowing a file to be moved around while retaining the
- same key.
-}
keyValue :: KeySource -> Annex (Maybe Key)
keyValue source = do
stat <- liftIO $ getFileStatus $ contentLocation source
return $ Just Key {
keyName = takeFileName $ keyFilename source,
keyBackendName = name backend,
keySize = Just $ fromIntegral $ fileSize stat,
keyMtime = Just $ modificationTime stat
}