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.
109 lines
3.1 KiB
Haskell
109 lines
3.1 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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{-# LANGUAGE CPP #-}
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module Command.Fix where
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import Command
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import Config
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import qualified Annex
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import Annex.Version
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import Annex.ReplaceFile
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import Annex.Content
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import Annex.Perms
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import qualified Annex.Queue
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import qualified Database.Keys
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#if ! defined(mingw32_HOST_OS) && ! defined(__ANDROID__)
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import Utility.Touch
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#endif
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cmd :: Command
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cmd = notDirect $ noCommit $ withGlobalOptions [annexedMatchingOptions] $
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command "fix" SectionMaintenance
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"fix up links to annexed content"
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paramPaths (withParams seek)
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seek :: CmdParams -> CommandSeek
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seek ps = unlessM crippledFileSystem $ do
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fixwhat <- ifM versionSupportsUnlockedPointers
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( return FixAll
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, return FixSymlinks
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)
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l <- workTreeItems ps
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flip withFilesInGit l $ whenAnnexed $ start fixwhat
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data FixWhat = FixSymlinks | FixAll
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start :: FixWhat -> FilePath -> Key -> CommandStart
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start fixwhat file key = do
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currlink <- liftIO $ catchMaybeIO $ readSymbolicLink file
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wantlink <- calcRepo $ gitAnnexLink file key
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case currlink of
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Just l
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| l /= wantlink -> fixby $ fixSymlink file wantlink
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| otherwise -> stop
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Nothing -> case fixwhat of
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FixAll -> fixthin
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FixSymlinks -> stop
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where
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fixby a = do
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showStart "fix" file
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next a
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fixthin = do
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obj <- calcRepo $ gitAnnexLocation key
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stopUnless (isUnmodified key file <&&> isUnmodified key obj) $ do
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thin <- annexThin <$> Annex.getGitConfig
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fs <- liftIO $ catchMaybeIO $ getFileStatus file
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os <- liftIO $ catchMaybeIO $ getFileStatus obj
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case (linkCount <$> fs, linkCount <$> os, thin) of
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(Just 1, Just 1, True) ->
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fixby $ makeHardLink file key
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(Just n, Just n', False) | n > 1 && n == n' ->
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fixby $ breakHardLink file key obj
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_ -> stop
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breakHardLink :: FilePath -> Key -> FilePath -> CommandPerform
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breakHardLink file key obj = do
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replaceFile file $ \tmp -> do
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mode <- liftIO $ catchMaybeIO $ fileMode <$> getFileStatus file
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unlessM (checkedCopyFile key obj tmp mode) $
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error "unable to break hard link"
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thawContent tmp
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modifyContent obj $ freezeContent obj
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Database.Keys.storeInodeCaches key [file]
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next $ return True
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makeHardLink :: FilePath -> Key -> CommandPerform
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makeHardLink file key = do
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replaceFile file $ \tmp -> do
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mode <- liftIO $ catchMaybeIO $ fileMode <$> getFileStatus file
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linkFromAnnex key tmp mode >>= \case
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LinkAnnexFailed -> error "unable to make hard link"
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_ -> noop
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next $ return True
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fixSymlink :: FilePath -> FilePath -> CommandPerform
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fixSymlink file link = do
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liftIO $ do
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#if ! defined(mingw32_HOST_OS) && ! defined(__ANDROID__)
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-- preserve mtime of symlink
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mtime <- catchMaybeIO $ TimeSpec . modificationTime
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<$> getSymbolicLinkStatus file
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#endif
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createDirectoryIfMissing True (parentDir file)
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removeFile file
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createSymbolicLink link file
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#if ! defined(mingw32_HOST_OS) && ! defined(__ANDROID__)
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maybe noop (\t -> touch file t False) mtime
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#endif
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next $ cleanupSymlink file
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cleanupSymlink :: FilePath -> CommandCleanup
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cleanupSymlink file = do
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Annex.Queue.addCommand "add" [Param "--force", Param "--"] [file]
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return True
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