1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
|
{- git-annex-shell command
-
- Copyright 2015 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU AGPL version 3 or higher.
-}
module Command.LockContent where
import Command
import Annex.Content
import Remote.Helper.Ssh (contentLockedMarker)
import Utility.SimpleProtocol
cmd :: Command
cmd = noCommit $
command "lockcontent" SectionPlumbing
"locks key's content in the annex, preventing it being dropped"
paramKey
(withParams seek)
seek :: CmdParams -> CommandSeek
seek = withWords (commandAction . start)
-- First, lock the content, then print out "OK".
-- Wait for the caller to send a line before dropping the lock.
start :: [String] -> CommandStart
start [ks] = do
ok <- lockContentShared k (const locksuccess)
`catchNonAsync` (const $ return False)
liftIO $ if ok
then exitSuccess
else exitFailure
where
k = fromMaybe (giveup "bad key") (deserializeKey ks)
locksuccess = liftIO $ do
putStrLn contentLockedMarker
hFlush stdout
_ <- getProtocolLine stdin
return True
start _ = giveup "Specify exactly 1 key."
|
