git-annex/Command/Lock.hs
Joey Hess d0b06c17c0
Added --no-check-gitignore option for finer grained control than using --force.
add, addurl, importfeed, import: Added --no-check-gitignore option
for finer grained control than using --force.

(--force is used for too many different things, and at least one
of these also uses it for something else. I would like to reduce
--force's footprint until it only forces drops or a few other data
losses. For now, --force still disables checking ignores too.)

addunused: Don't check .gitignores when adding files. This is a behavior
change, but I justify it by analogy with git add of a gitignored file
adding it, asking to add all unused files back should add them all back,
not skip some. The old behavior was surprising.

In Command.Lock and Command.ReKey, CheckGitIgnore False does not change
behavior, it only makes explicit what is done. Since these commands are run
on annexed files, the file is already checked into git, so git add won't
check ignores.
2020-09-18 13:19:13 -04:00

107 lines
3.1 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 = withGlobalOptions [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.getState Annex.force)
( cont
, errorModified
)
)
cont = perform file key
perform :: RawFilePath -> Key -> CommandPerform
perform file key = do
lockdown =<< calcRepo (gitAnnexLocation key)
addLink (CheckGitIgnore False) (fromRawFilePath file) key
=<< withTSDelta (liftIO . genInodeCache file)
next $ cleanup file key
where
lockdown obj = do
ifM (isUnmodified key obj)
( breakhardlink obj
, repopulate (fromRawFilePath obj)
)
whenM (liftIO $ R.doesPathExist obj) $
freezeContent $ fromRawFilePath 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
let obj' = fromRawFilePath obj
modifyContent obj' $ replaceGitAnnexDirFile obj' $ \tmp -> do
unlessM (checkedCopyFile key obj' tmp Nothing) $
giveup "unable to lock file"
Database.Keys.storeInodeCaches key [obj]
-- Try to repopulate obj from an unmodified associated file.
repopulate obj = modifyContent obj $ do
g <- Annex.gitRepo
fs <- map (`fromTopFilePath` g)
<$> Database.Keys.getAssociatedFiles key
mfile <- firstM (isUnmodified key) fs
liftIO $ nukeFile obj
case mfile of
Just unmodified ->
unlessM (checkedCopyFile key (fromRawFilePath unmodified) obj Nothing)
lostcontent
Nothing -> lostcontent
lostcontent = logStatus key InfoMissing
cleanup :: RawFilePath -> Key -> CommandCleanup
cleanup file key = do
Database.Keys.removeAssociatedFile key =<< inRepo (toTopFilePath file)
return True
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)"