44 lines
1.1 KiB
Haskell
44 lines
1.1 KiB
Haskell
{- git-annex-shell command
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-
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- Copyright 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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module Command.LockContent where
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import Command
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import Annex.Content
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import Remote.Helper.Ssh (contentLockedMarker)
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cmd :: Command
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cmd = noCommit $
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command "lockcontent" SectionPlumbing
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"locks key's content in the annex, preventing it being dropped"
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paramKey
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(withParams seek)
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seek :: CmdParams -> CommandSeek
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seek = withWords start
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-- First, lock the content. Then, make sure the content is actually
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-- present, and print out a "1". Wait for the caller to send a line before
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-- dropping the lock.
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start :: [String] -> CommandStart
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start [ks] = do
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ok <- lockContentShared k (const locksuccess)
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`catchNonAsync` (const $ return False)
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liftIO $ if ok
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then exitSuccess
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else exitFailure
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where
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k = fromMaybe (error "bad key") (file2key ks)
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locksuccess = ifM (inAnnex k)
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( liftIO $ do
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putStrLn contentLockedMarker
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hFlush stdout
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_ <- getLine
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return True
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, return False
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)
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start _ = error "Specify exactly 1 key."
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