b223988e22
--backend is no longer a global option, and is only accepted by commands that actually need it. Three commands that used to support backend but don't any longer are watch, webapp, and assistant. It would be possible to make them support it, but I doubt anyone used the option with these. And in the case of webapp and assistant, the option was handled inconsistently, only taking affect when the command is run with an existing git-annex repo, not when it creates a new one. Also, renamed GlobalOption etc to AnnexOption. Because there are many options of this type that are not actually global (any more) and get added to commands that need them. Sponsored-by: Kevin Mueller on Patreon
102 lines
2.9 KiB
Haskell
102 lines
2.9 KiB
Haskell
{- git-annex command
|
|
-
|
|
- Copyright 2010,2015 Joey Hess <id@joeyh.name>
|
|
-
|
|
- Licensed under the GNU AGPL version 3 or higher.
|
|
-}
|
|
|
|
module Command.Lock where
|
|
|
|
import Command
|
|
import qualified Annex
|
|
import Annex.Content
|
|
import Annex.Link
|
|
import Annex.InodeSentinal
|
|
import Annex.Perms
|
|
import Annex.ReplaceFile
|
|
import Utility.InodeCache
|
|
import qualified Database.Keys
|
|
import Annex.Ingest
|
|
import Logs.Location
|
|
import Git.FilePath
|
|
import qualified Utility.RawFilePath as R
|
|
|
|
cmd :: Command
|
|
cmd = withAnnexOptions [jsonOptions, annexedMatchingOptions] $
|
|
command "lock" SectionCommon
|
|
"undo unlock command"
|
|
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
|
|
}
|
|
|
|
start :: SeekInput -> RawFilePath -> Key -> CommandStart
|
|
start si file key = ifM (isJust <$> isAnnexLink file)
|
|
( stop
|
|
, starting "lock" (mkActionItem (key, file)) si $
|
|
go =<< liftIO (isPointerFile file)
|
|
)
|
|
where
|
|
go (Just key')
|
|
| key' == key = cont
|
|
| otherwise = errorModified
|
|
go Nothing =
|
|
ifM (isUnmodified key file)
|
|
( cont
|
|
, ifM (Annex.getRead Annex.force)
|
|
( cont
|
|
, errorModified
|
|
)
|
|
)
|
|
cont = perform file key
|
|
|
|
perform :: RawFilePath -> Key -> CommandPerform
|
|
perform file key = do
|
|
lockdown =<< calcRepo (gitAnnexLocation key)
|
|
addSymlink file key =<< withTSDelta (liftIO . genInodeCache file)
|
|
next $ return True
|
|
where
|
|
lockdown obj = do
|
|
ifM (isUnmodified key obj)
|
|
( breakhardlink obj
|
|
, repopulate obj
|
|
)
|
|
whenM (liftIO $ R.doesPathExist obj) $
|
|
freezeContent obj
|
|
|
|
-- It's ok if the file is hard linked to obj, but if some other
|
|
-- associated file is, we need to break that link to lock down obj.
|
|
breakhardlink obj = whenM (catchBoolIO $ (> 1) . linkCount <$> liftIO (R.getFileStatus obj)) $ do
|
|
mfc <- withTSDelta (liftIO . genInodeCache file)
|
|
unlessM (sameInodeCache obj (maybeToList mfc)) $ do
|
|
modifyContentDir obj $ replaceGitAnnexDirFile (fromRawFilePath obj) $ \tmp -> do
|
|
unlessM (checkedCopyFile key obj (toRawFilePath tmp) Nothing) $
|
|
giveup "unable to lock file"
|
|
Database.Keys.storeInodeCaches key [obj]
|
|
|
|
-- Try to repopulate obj from an unmodified associated file.
|
|
repopulate obj = modifyContentDir obj $ do
|
|
g <- Annex.gitRepo
|
|
fs <- map (`fromTopFilePath` g)
|
|
<$> Database.Keys.getAssociatedFiles key
|
|
mfile <- firstM (isUnmodified key) fs
|
|
liftIO $ removeWhenExistsWith R.removeLink obj
|
|
case mfile of
|
|
Just unmodified ->
|
|
ifM (checkedCopyFile key unmodified obj Nothing)
|
|
( Database.Keys.storeInodeCaches key [obj]
|
|
, lostcontent
|
|
)
|
|
Nothing -> lostcontent
|
|
|
|
lostcontent = logStatus key InfoMissing
|
|
|
|
errorModified :: a
|
|
errorModified = giveup "Locking this file would discard any changes you have made to it. Use 'git annex add' to stage your changes. (Or, use --force to override)"
|