7be690f326
Support running v7 upgrade in a repo where there is no branch checked out, but HEAD is set directly to some other ref. This commit was sponsored by Jack Hill on Patreon.
112 lines
3.6 KiB
Haskell
112 lines
3.6 KiB
Haskell
{- git-annex worktree files
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-
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- Copyright 2013-2019 Joey Hess <id@joeyh.name>
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-
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- Licensed under the GNU AGPL version 3 or higher.
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-}
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module Annex.WorkTree where
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import Annex.Common
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import Annex.Link
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import Annex.CatFile
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import Annex.Version
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import Annex.Content
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import Annex.ReplaceFile
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import Annex.CurrentBranch
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import Annex.InodeSentinal
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import Utility.InodeCache
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import Config
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import Git.FilePath
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import qualified Git.Ref
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import qualified Git.Branch
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import qualified Git.LsTree
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import qualified Git.Types
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import Database.Types
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import qualified Database.Keys
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import qualified Database.Keys.SQL
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{- Looks up the key corresponding to an annexed file in the work tree,
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- by examining what the file links to.
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-
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- An unlocked file will not have a link on disk, so fall back to
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- looking for a pointer to a key in git.
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-
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- When in an adjusted branch that may have hidden the file, looks for a
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- pointer to a key in the original branch.
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-}
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lookupFile :: FilePath -> Annex (Maybe Key)
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lookupFile = lookupFile' catkeyfile
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where
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catkeyfile file =
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ifM (liftIO $ doesFileExist file)
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( catKeyFile file
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, catKeyFileHidden file =<< getCurrentBranch
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)
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lookupFileNotHidden :: FilePath -> Annex (Maybe Key)
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lookupFileNotHidden = lookupFile' catkeyfile
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where
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catkeyfile file =
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ifM (liftIO $ doesFileExist file)
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( catKeyFile file
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, return Nothing
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)
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lookupFile' :: (FilePath -> Annex (Maybe Key)) -> FilePath -> Annex (Maybe Key)
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lookupFile' catkeyfile file = isAnnexLink file >>= \case
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Just key -> return (Just key)
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Nothing -> ifM (versionSupportsUnlockedPointers <||> isDirect)
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( catkeyfile file
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, return Nothing
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)
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{- Modifies an action to only act on files that are already annexed,
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- and passes the key on to it. -}
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whenAnnexed :: (FilePath -> Key -> Annex (Maybe a)) -> FilePath -> Annex (Maybe a)
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whenAnnexed a file = ifAnnexed file (a file) (return Nothing)
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ifAnnexed :: FilePath -> (Key -> Annex a) -> Annex a -> Annex a
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ifAnnexed file yes no = maybe no yes =<< lookupFile file
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{- Find all unlocked files and update the keys database for them.
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-
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- This is expensive, and so normally the associated files are updated
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- incrementally when changes are noticed. So, this only needs to be done
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- when initializing/upgrading a v6+ mode repository.
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-
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- Also, the content for the unlocked file may already be present as
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- an annex object. If so, make the unlocked file use that content.
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-}
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scanUnlockedFiles :: Annex ()
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scanUnlockedFiles = whenM (inRepo $ Git.Ref.exists Git.Ref.headRef) $ do
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showSideAction "scanning for unlocked files"
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Database.Keys.runWriter $
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liftIO . Database.Keys.SQL.dropAllAssociatedFiles
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(l, cleanup) <- inRepo $ Git.LsTree.lsTree Git.LsTree.LsTreeRecursive Git.Ref.headRef
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forM_ l $ \i ->
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when (isregfile i) $
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maybe noop (add i)
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=<< catKey (Git.LsTree.sha i)
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liftIO $ void cleanup
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where
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isregfile i = case Git.Types.toTreeItemType (Git.LsTree.mode i) of
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Just Git.Types.TreeFile -> True
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Just Git.Types.TreeExecutable -> True
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_ -> False
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add i k = do
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let tf = Git.LsTree.file i
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Database.Keys.runWriter $
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liftIO . Database.Keys.SQL.addAssociatedFileFast (toIKey k) tf
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whenM (inAnnex k) $ do
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f <- fromRepo $ fromTopFilePath tf
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destmode <- liftIO $ catchMaybeIO $ fileMode <$> getFileStatus f
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ic <- replaceFile f $ \tmp ->
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linkFromAnnex k tmp destmode >>= \case
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LinkAnnexOk ->
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withTSDelta (liftIO . genInodeCache tmp)
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LinkAnnexNoop -> return Nothing
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LinkAnnexFailed -> liftIO $ do
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writePointerFile tmp k destmode
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return Nothing
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maybe noop (restagePointerFile (Restage True) f) ic
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