6583448bab
Added --json-error-messages option, which includes error messages in the json output, rather than outputting them to stderr. The actual rediretion of errors is not implemented yet, this is only the docs and option plumbing. This commit was supported by the NSF-funded DataLad project.
120 lines
3.2 KiB
Haskell
120 lines
3.2 KiB
Haskell
{- git-annex command
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-
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- Copyright 2010,2015 Joey Hess <id@joeyh.name>
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-
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- Licensed under the GNU GPL version 3 or higher.
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-}
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module Command.Lock where
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import Command
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import qualified Annex.Queue
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import qualified Annex
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import Annex.Version
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import Annex.Content
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import Annex.Link
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import Annex.InodeSentinal
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import Annex.Perms
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import Annex.ReplaceFile
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import Utility.InodeCache
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import qualified Database.Keys
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import Annex.Ingest
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import Logs.Location
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import Git.FilePath
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cmd :: Command
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cmd = notDirect $ withGlobalOptions [jsonOptions, annexedMatchingOptions] $
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command "lock" SectionCommon
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"undo unlock command"
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paramPaths (withParams seek)
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seek :: CmdParams -> CommandSeek
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seek ps = do
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l <- workTreeItems ps
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ifM versionSupportsUnlockedPointers
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( withFilesInGit (whenAnnexed startNew) l
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, do
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withFilesOldUnlocked startOld l
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withFilesOldUnlockedToBeCommitted startOld l
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)
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startNew :: FilePath -> Key -> CommandStart
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startNew file key = ifM (isJust <$> isAnnexLink file)
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( stop
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, do
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showStart "lock" file
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go =<< liftIO (isPointerFile file)
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)
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where
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go (Just key')
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| key' == key = cont
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| otherwise = errorModified
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go Nothing =
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ifM (isUnmodified key file)
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( cont
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, ifM (Annex.getState Annex.force)
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( cont
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, errorModified
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)
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)
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cont = next $ performNew file key
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performNew :: FilePath -> Key -> CommandPerform
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performNew file key = do
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lockdown =<< calcRepo (gitAnnexLocation key)
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addLink file key
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=<< withTSDelta (liftIO . genInodeCache file)
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next $ cleanupNew file key
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where
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lockdown obj = do
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ifM (isUnmodified key obj)
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( breakhardlink obj
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, repopulate obj
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)
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whenM (liftIO $ doesFileExist obj) $
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freezeContent obj
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-- It's ok if the file is hard linked to obj, but if some other
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-- associated file is, we need to break that link to lock down obj.
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breakhardlink obj = whenM (catchBoolIO $ (> 1) . linkCount <$> liftIO (getFileStatus obj)) $ do
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mfc <- withTSDelta (liftIO . genInodeCache file)
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unlessM (sameInodeCache obj (maybeToList mfc)) $ do
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modifyContent obj $ replaceFile obj $ \tmp -> do
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unlessM (checkedCopyFile key obj tmp Nothing) $
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giveup "unable to lock file"
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Database.Keys.storeInodeCaches key [obj]
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-- Try to repopulate obj from an unmodified associated file.
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repopulate obj = modifyContent obj $ do
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g <- Annex.gitRepo
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fs <- map (`fromTopFilePath` g)
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<$> Database.Keys.getAssociatedFiles key
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mfile <- firstM (isUnmodified key) fs
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liftIO $ nukeFile obj
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case mfile of
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Just unmodified ->
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unlessM (checkedCopyFile key unmodified obj Nothing)
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lostcontent
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Nothing -> lostcontent
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lostcontent = logStatus key InfoMissing
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cleanupNew :: FilePath -> Key -> CommandCleanup
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cleanupNew file key = do
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Database.Keys.removeAssociatedFile key =<< inRepo (toTopFilePath file)
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return True
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startOld :: FilePath -> CommandStart
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startOld file = do
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showStart "lock" file
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unlessM (Annex.getState Annex.force)
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errorModified
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next $ performOld file
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performOld :: FilePath -> CommandPerform
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performOld file = do
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Annex.Queue.addCommand "checkout" [Param "--"] [file]
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next $ return True
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errorModified :: a
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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)"
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