227 lines
6.6 KiB
Haskell
227 lines
6.6 KiB
Haskell
{- git-annex command
|
|
-
|
|
- Copyright 2010, 2013 Joey Hess <joey@kitenet.net>
|
|
-
|
|
- Licensed under the GNU GPL version 3 or higher.
|
|
-}
|
|
|
|
{-# LANGUAGE CPP #-}
|
|
|
|
module Command.Add where
|
|
|
|
import Common.Annex
|
|
import Annex.Exception
|
|
import Command
|
|
import Types.KeySource
|
|
import Backend
|
|
import Logs.Location
|
|
import Annex.Content
|
|
import Annex.Content.Direct
|
|
import Annex.Perms
|
|
import Annex.Link
|
|
import qualified Annex
|
|
import qualified Annex.Queue
|
|
#ifndef __ANDROID__
|
|
import Utility.Touch
|
|
#endif
|
|
import Utility.FileMode
|
|
import Config
|
|
import Utility.InodeCache
|
|
import Annex.FileMatcher
|
|
|
|
def :: [Command]
|
|
def = [notBareRepo $ command "add" paramPaths seek SectionCommon
|
|
"add files to annex"]
|
|
|
|
{- Add acts on both files not checked into git yet, and unlocked files.
|
|
-
|
|
- In direct mode, it acts on any files that have changed. -}
|
|
seek :: [CommandSeek]
|
|
seek =
|
|
[ go withFilesNotInGit
|
|
, whenNotDirect $ go withFilesUnlocked
|
|
, whenDirect $ go withFilesMaybeModified
|
|
]
|
|
where
|
|
go a = withValue largeFilesMatcher $ \matcher ->
|
|
a $ \file -> ifM (checkFileMatcher matcher file <||> Annex.getState Annex.force)
|
|
( start file
|
|
, stop
|
|
)
|
|
|
|
{- The add subcommand annexes a file, generating a key for it using a
|
|
- backend, and then moving it into the annex directory and setting up
|
|
- the symlink pointing to its content. -}
|
|
start :: FilePath -> CommandStart
|
|
start file = ifAnnexed file addpresent add
|
|
where
|
|
add = do
|
|
ms <- liftIO $ catchMaybeIO $ getSymbolicLinkStatus file
|
|
case ms of
|
|
Nothing -> stop
|
|
Just s
|
|
| isSymbolicLink s || not (isRegularFile s) -> stop
|
|
| otherwise -> do
|
|
showStart "add" file
|
|
next $ perform file
|
|
addpresent (key, _) = ifM isDirect
|
|
( ifM (goodContent key file) ( stop , add )
|
|
, fixup key
|
|
)
|
|
fixup key = do
|
|
-- fixup from an interrupted add; the symlink
|
|
-- is present but not yet added to git
|
|
showStart "add" file
|
|
liftIO $ removeFile file
|
|
next $ next $ cleanup file key =<< inAnnex key
|
|
|
|
{- The file that's being added is locked down before a key is generated,
|
|
- to prevent it from being modified in between. It's hard linked into a
|
|
- temporary location, and its writable bits are removed. It could still be
|
|
- written to by a process that already has it open for writing.
|
|
-
|
|
- Lockdown can fail if a file gets deleted, and Nothing will be returned.
|
|
-}
|
|
lockDown :: FilePath -> Annex (Maybe KeySource)
|
|
lockDown file = ifM (crippledFileSystem)
|
|
( liftIO $ catchMaybeIO $ do
|
|
cache <- genInodeCache file
|
|
return $ KeySource
|
|
{ keyFilename = file
|
|
, contentLocation = file
|
|
, inodeCache = cache
|
|
}
|
|
, do
|
|
tmp <- fromRepo gitAnnexTmpDir
|
|
createAnnexDirectory tmp
|
|
liftIO $ catchMaybeIO $ do
|
|
preventWrite file
|
|
(tmpfile, h) <- openTempFile tmp (takeFileName file)
|
|
hClose h
|
|
nukeFile tmpfile
|
|
createLink file tmpfile
|
|
cache <- genInodeCache tmpfile
|
|
return $ KeySource
|
|
{ keyFilename = file
|
|
, contentLocation = tmpfile
|
|
, inodeCache = cache
|
|
}
|
|
)
|
|
|
|
{- Ingests a locked down file into the annex.
|
|
-
|
|
- In direct mode, leaves the file alone, and just updates bookkeeping
|
|
- information.
|
|
-}
|
|
ingest :: (Maybe KeySource) -> Annex (Maybe Key)
|
|
ingest Nothing = return Nothing
|
|
ingest (Just source) = do
|
|
backend <- chooseBackend $ keyFilename source
|
|
k <- genKey source backend
|
|
cache <- liftIO $ genInodeCache $ contentLocation source
|
|
case (cache, inodeCache source) of
|
|
(_, Nothing) -> go k cache
|
|
(Just newc, Just c) | compareStrong c newc -> go k cache
|
|
_ -> failure "changed while it was being added"
|
|
where
|
|
go k cache = ifM isDirect ( godirect k cache , goindirect k cache )
|
|
|
|
goindirect (Just (key, _)) _ = do
|
|
handle (undo (keyFilename source) key) $
|
|
moveAnnex key $ contentLocation source
|
|
liftIO $ nukeFile $ keyFilename source
|
|
return $ Just key
|
|
goindirect Nothing _ = failure "failed to generate a key"
|
|
|
|
godirect (Just (key, _)) (Just cache) = do
|
|
addInodeCache key cache
|
|
finishIngestDirect key source
|
|
return $ Just key
|
|
godirect _ _ = failure "failed to generate a key"
|
|
|
|
failure msg = do
|
|
warning $ keyFilename source ++ " " ++ msg
|
|
when (contentLocation source /= keyFilename source) $
|
|
liftIO $ nukeFile $ contentLocation source
|
|
return Nothing
|
|
|
|
finishIngestDirect :: Key -> KeySource -> Annex ()
|
|
finishIngestDirect key source = do
|
|
void $ addAssociatedFile key $ keyFilename source
|
|
unlessM crippledFileSystem $
|
|
liftIO $ allowWrite $ keyFilename source
|
|
when (contentLocation source /= keyFilename source) $
|
|
liftIO $ nukeFile $ contentLocation source
|
|
|
|
perform :: FilePath -> CommandPerform
|
|
perform file =
|
|
maybe stop (\key -> next $ cleanup file key True)
|
|
=<< ingest =<< lockDown file
|
|
|
|
{- On error, put the file back so it doesn't seem to have vanished.
|
|
- This can be called before or after the symlink is in place. -}
|
|
undo :: FilePath -> Key -> IOException -> Annex a
|
|
undo file key e = do
|
|
whenM (inAnnex key) $ do
|
|
liftIO $ nukeFile file
|
|
handle tryharder $ fromAnnex key file
|
|
logStatus key InfoMissing
|
|
throw e
|
|
where
|
|
-- fromAnnex could fail if the file ownership is weird
|
|
tryharder :: IOException -> Annex ()
|
|
tryharder _ = do
|
|
src <- calcRepo $ gitAnnexLocation key
|
|
liftIO $ moveFile src file
|
|
|
|
{- Creates the symlink to the annexed content, returns the link target. -}
|
|
link :: FilePath -> Key -> Bool -> Annex String
|
|
link file key hascontent = handle (undo file key) $ do
|
|
l <- inRepo $ gitAnnexLink file key
|
|
replaceFile file $ makeAnnexLink l
|
|
|
|
#ifndef __ANDROID__
|
|
when hascontent $ do
|
|
-- touch the symlink to have the same mtime as the
|
|
-- file it points to
|
|
liftIO $ do
|
|
mtime <- modificationTime <$> getFileStatus file
|
|
touch file (TimeSpec mtime) False
|
|
#endif
|
|
|
|
return l
|
|
|
|
{- Creates the symlink to the annexed content, and stages it in git.
|
|
-
|
|
- As long as the filesystem supports symlinks, we use
|
|
- git add, rather than directly staging the symlink to git.
|
|
- Using git add is best because it allows the queuing to work
|
|
- and is faster (staging the symlink runs hash-object commands each time).
|
|
- Also, using git add allows it to skip gitignored files, unless forced
|
|
- to include them.
|
|
-}
|
|
addLink :: FilePath -> Key -> Bool -> Annex ()
|
|
addLink file key hascontent = ifM (coreSymlinks <$> Annex.getGitConfig)
|
|
( do
|
|
_ <- link file key hascontent
|
|
params <- ifM (Annex.getState Annex.force)
|
|
( return [Param "-f"]
|
|
, return []
|
|
)
|
|
Annex.Queue.addCommand "add" (params++[Param "--"]) [file]
|
|
, do
|
|
l <- link file key hascontent
|
|
addAnnexLink l file
|
|
)
|
|
|
|
cleanup :: FilePath -> Key -> Bool -> CommandCleanup
|
|
cleanup file key hascontent = do
|
|
when hascontent $
|
|
logStatus key InfoPresent
|
|
ifM (isDirect <&&> pure hascontent)
|
|
( do
|
|
l <- inRepo $ gitAnnexLink file key
|
|
stageSymlink file =<< hashSymlink l
|
|
, addLink file key hascontent
|
|
)
|
|
return True
|