a3b714ddd9
9cb250f7be got the ones in RawFilePath,
but there were others that used the one from unix-compat, which fails at
runtime on windows. To avoid this,
import System.PosixCompat.Files hiding removeLink
This commit was sponsored by Ethan Aubin.
72 lines
2.3 KiB
Haskell
72 lines
2.3 KiB
Haskell
{- git-annex pointer files
|
|
-
|
|
- Copyright 2010-2018 Joey Hess <id@joeyh.name>
|
|
-
|
|
- Licensed under the GNU AGPL version 3 or higher.
|
|
-}
|
|
|
|
{-# LANGUAGE CPP #-}
|
|
|
|
module Annex.Content.PointerFile where
|
|
|
|
import Annex.Common
|
|
import Annex.Perms
|
|
import Annex.Link
|
|
import Annex.ReplaceFile
|
|
import Annex.InodeSentinal
|
|
import Annex.Content.LowLevel
|
|
import Utility.InodeCache
|
|
import qualified Utility.RawFilePath as R
|
|
#if ! defined(mingw32_HOST_OS)
|
|
import Utility.Touch
|
|
import System.Posix.Files (modificationTimeHiRes)
|
|
#endif
|
|
|
|
{- Populates a pointer file with the content of a key.
|
|
-
|
|
- If the file already has some other content, it is not modified.
|
|
-
|
|
- Returns an InodeCache if it populated the pointer file.
|
|
-}
|
|
populatePointerFile :: Restage -> Key -> RawFilePath -> RawFilePath -> Annex (Maybe InodeCache)
|
|
populatePointerFile restage k obj f = go =<< liftIO (isPointerFile f)
|
|
where
|
|
go (Just k') | k == k' = do
|
|
let f' = fromRawFilePath f
|
|
destmode <- liftIO $ catchMaybeIO $ fileMode <$> R.getFileStatus f
|
|
liftIO $ removeWhenExistsWith R.removeLink f
|
|
(ic, populated) <- replaceWorkTreeFile f' $ \tmp -> do
|
|
let tmp' = toRawFilePath tmp
|
|
ok <- linkOrCopy k obj tmp' destmode >>= \case
|
|
Just _ -> thawContent tmp' >> return True
|
|
Nothing -> liftIO (writePointerFile tmp' k destmode) >> return False
|
|
ic <- withTSDelta (liftIO . genInodeCache tmp')
|
|
return (ic, ok)
|
|
maybe noop (restagePointerFile restage f) ic
|
|
if populated
|
|
then return ic
|
|
else return Nothing
|
|
go _ = return Nothing
|
|
|
|
{- Removes the content from a pointer file, replacing it with a pointer.
|
|
-
|
|
- Does not check if the pointer file is modified. -}
|
|
depopulatePointerFile :: Key -> RawFilePath -> Annex ()
|
|
depopulatePointerFile key file = do
|
|
let file' = fromRawFilePath file
|
|
st <- liftIO $ catchMaybeIO $ getFileStatus file'
|
|
let mode = fmap fileMode st
|
|
secureErase file
|
|
liftIO $ removeWhenExistsWith R.removeLink file
|
|
ic <- replaceWorkTreeFile file' $ \tmp -> do
|
|
let tmp' = toRawFilePath tmp
|
|
liftIO $ writePointerFile tmp' key mode
|
|
#if ! defined(mingw32_HOST_OS)
|
|
-- Don't advance mtime; this avoids unncessary re-smudging
|
|
-- by git in some cases.
|
|
liftIO $ maybe noop
|
|
(\t -> touch tmp' t False)
|
|
(fmap modificationTimeHiRes st)
|
|
#endif
|
|
withTSDelta (liftIO . genInodeCache (toRawFilePath tmp))
|
|
maybe noop (restagePointerFile (Restage True) file) ic
|