6481991208
Like import was using ActionItemWorkTreeFile, it's ok to use it for export, even though it might not correspond with a file in the work tree. And renamed it to ActionItemTreeFile to make that clearer. Note that when an export has to rename files, it still uses ActionItemOther, so file will still be null in that case, but as no file is being transferred, that seems ok.
139 lines
4.4 KiB
Haskell
139 lines
4.4 KiB
Haskell
{- git-annex command
|
|
-
|
|
- Copyright 2012-2016 Joey Hess <id@joeyh.name>
|
|
-
|
|
- Licensed under the GNU AGPL version 3 or higher.
|
|
-}
|
|
|
|
module Command.ReKey where
|
|
|
|
import Command
|
|
import qualified Annex
|
|
import Annex.Content
|
|
import Annex.Ingest
|
|
import Annex.Link
|
|
import Annex.Perms
|
|
import Annex.ReplaceFile
|
|
import Logs.Location
|
|
import Git.FilePath
|
|
import qualified Database.Keys
|
|
import Annex.InodeSentinal
|
|
import Utility.InodeCache
|
|
import qualified Utility.RawFilePath as R
|
|
|
|
cmd :: Command
|
|
cmd = command "rekey" SectionPlumbing
|
|
"change keys used for files"
|
|
(paramRepeating $ paramPair paramPath paramKey)
|
|
(seek <$$> optParser)
|
|
|
|
data ReKeyOptions = ReKeyOptions
|
|
{ reKeyThese :: CmdParams
|
|
, batchOption :: BatchMode
|
|
}
|
|
|
|
optParser :: CmdParamsDesc -> Parser ReKeyOptions
|
|
optParser desc = ReKeyOptions
|
|
<$> cmdParams desc
|
|
<*> parseBatchOption
|
|
|
|
-- Split on the last space, since a FilePath can contain whitespace,
|
|
-- but a Key very rarely does.
|
|
batchParser :: String -> Annex (Either String (RawFilePath, Key))
|
|
batchParser s = case separate (== ' ') (reverse s) of
|
|
(rk, rf)
|
|
| null rk || null rf -> return $ Left "Expected: \"file key\""
|
|
| otherwise -> case deserializeKey (reverse rk) of
|
|
Nothing -> return $ Left "bad key"
|
|
Just k -> do
|
|
let f = reverse rf
|
|
f' <- liftIO $ relPathCwdToFile (toRawFilePath f)
|
|
return $ Right (f', k)
|
|
|
|
seek :: ReKeyOptions -> CommandSeek
|
|
seek o = case batchOption o of
|
|
Batch fmt -> batchInput fmt batchParser
|
|
(batchCommandAction . uncurry start)
|
|
NoBatch -> withPairs
|
|
(\(si, p) -> commandAction (start si (parsekey p)))
|
|
(reKeyThese o)
|
|
where
|
|
parsekey (file, skey) =
|
|
(toRawFilePath file, fromMaybe (giveup "bad key") (deserializeKey skey))
|
|
|
|
start :: SeekInput -> (RawFilePath, Key) -> CommandStart
|
|
start si (file, newkey) = ifAnnexed file go stop
|
|
where
|
|
go oldkey
|
|
| oldkey == newkey = stop
|
|
| otherwise = starting "rekey" ai si $
|
|
perform file oldkey newkey
|
|
|
|
ai = ActionItemTreeFile file
|
|
|
|
perform :: RawFilePath -> Key -> Key -> CommandPerform
|
|
perform file oldkey newkey = do
|
|
ifM (inAnnex oldkey)
|
|
( unlessM (linkKey file oldkey newkey) $
|
|
giveup "failed creating link from old to new key"
|
|
, unlessM (Annex.getState Annex.force) $
|
|
giveup $ fromRawFilePath file ++ " is not available (use --force to override)"
|
|
)
|
|
next $ cleanup file oldkey newkey
|
|
|
|
{- Make a hard link to the old key content (when supported),
|
|
- to avoid wasting disk space. -}
|
|
linkKey :: RawFilePath -> Key -> Key -> Annex Bool
|
|
linkKey file oldkey newkey = ifM (isJust <$> isAnnexLink file)
|
|
{- If the object file is already hardlinked to elsewhere, a hard
|
|
- link won't be made by getViaTmpFromDisk, but a copy instead.
|
|
- This avoids hard linking to content linked to an
|
|
- unlocked file, which would leave the new key unlocked
|
|
- and vulnerable to corruption. -}
|
|
( getViaTmpFromDisk RetrievalAllKeysSecure DefaultVerify newkey (AssociatedFile Nothing) $ \tmp -> unVerified $ do
|
|
oldobj <- calcRepo (gitAnnexLocation oldkey)
|
|
isJust <$> linkOrCopy' (return True) newkey oldobj tmp Nothing
|
|
, do
|
|
{- The file being rekeyed is itself an unlocked file; if
|
|
- it's hard linked to the old key, that link must be broken. -}
|
|
oldobj <- calcRepo (gitAnnexLocation oldkey)
|
|
v <- tryNonAsync $ do
|
|
st <- liftIO $ R.getFileStatus file
|
|
when (linkCount st > 1) $ do
|
|
freezeContent oldobj
|
|
replaceWorkTreeFile (fromRawFilePath file) $ \tmp -> do
|
|
let tmp' = toRawFilePath tmp
|
|
unlessM (checkedCopyFile oldkey oldobj tmp' Nothing) $
|
|
error "can't lock old key"
|
|
thawContent tmp'
|
|
ic <- withTSDelta (liftIO . genInodeCache file)
|
|
case v of
|
|
Left e -> do
|
|
warning (show e)
|
|
return False
|
|
Right () -> do
|
|
r <- linkToAnnex newkey file ic
|
|
return $ case r of
|
|
LinkAnnexFailed -> False
|
|
LinkAnnexOk -> True
|
|
LinkAnnexNoop -> True
|
|
)
|
|
|
|
cleanup :: RawFilePath -> Key -> Key -> CommandCleanup
|
|
cleanup file oldkey newkey = do
|
|
ifM (isJust <$> isAnnexLink file)
|
|
( do
|
|
-- Update symlink to use the new key.
|
|
liftIO $ removeFile (fromRawFilePath file)
|
|
addLink (CheckGitIgnore False) file newkey Nothing
|
|
, do
|
|
mode <- liftIO $ catchMaybeIO $ fileMode <$> R.getFileStatus file
|
|
liftIO $ whenM (isJust <$> isPointerFile file) $
|
|
writePointerFile file newkey mode
|
|
stagePointerFile file mode =<< hashPointerFile newkey
|
|
Database.Keys.removeAssociatedFile oldkey
|
|
=<< inRepo (toTopFilePath file)
|
|
)
|
|
whenM (inAnnex newkey) $
|
|
logStatus newkey InfoPresent
|
|
return True
|