git-annex/Command/Unlock.hs

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{- git-annex command
-
- Copyright 2010-2022 Joey Hess <id@joeyh.name>
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-
- Licensed under the GNU AGPL version 3 or higher.
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-}
module Command.Unlock where
import Command
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import Annex.Content
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import Annex.Perms
import Annex.Link
import Annex.ReplaceFile
import Annex.InodeSentinal
import Utility.InodeCache
import Git.FilePath
import qualified Database.Keys
import qualified Utility.RawFilePath as R
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import System.PosixCompat.Files (fileMode)
cmd :: Command
cmd = mkcmd "unlock" "unlock files for modification"
editcmd :: Command
editcmd = mkcmd "edit" "same as unlock"
mkcmd :: String -> String -> Command
mkcmd n d = withAnnexOptions [jsonOptions, annexedMatchingOptions] $
command n SectionCommon d paramPaths (withParams seek)
seek :: CmdParams -> CommandSeek
seek ps = withFilesInGitAnnex ww seeker =<< workTreeItems ww ps
where
ww = WarnUnmatchLsFiles
seeker = AnnexedFileSeeker
{ startAction = start
, checkContentPresent = Nothing
, usesLocationLog = False
}
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start :: SeekInput -> RawFilePath -> Key -> CommandStart
start si file key = ifM (isJust <$> isAnnexLink file)
( starting "unlock" ai si $ perform file key
, stop
)
where
ai = mkActionItem (key, AssociatedFile (Just file))
perform :: RawFilePath -> Key -> CommandPerform
perform dest key = do
destmode <- liftIO $ catchMaybeIO $ fileMode <$> R.getFileStatus dest
destic <- replaceWorkTreeFile (fromRawFilePath dest) $ \tmp -> do
ifM (inAnnex key)
( do
r <- linkFromAnnex' key (toRawFilePath tmp) destmode
case r of
LinkAnnexOk -> return ()
LinkAnnexNoop -> return ()
LinkAnnexFailed -> error "unlock failed"
, liftIO $ writePointerFile (toRawFilePath tmp) key destmode
)
withTSDelta (liftIO . genInodeCache (toRawFilePath tmp))
next $ cleanup dest destic key destmode
cleanup :: RawFilePath -> Maybe InodeCache -> Key -> Maybe FileMode -> CommandCleanup
cleanup dest destic key destmode = do
stagePointerFile dest destmode =<< hashPointerFile key
maybe noop (restagePointerFile (Restage True) dest) destic
Database.Keys.addAssociatedFile key =<< inRepo (toTopFilePath dest)
return True