e36808e167
Amoung other things, this makes unlocking a WORM backed file and then re-adding it without making any changes not add a new object, as the timestamp is preserved.
25 lines
762 B
Haskell
25 lines
762 B
Haskell
{- git-annex file copying
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-
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- Copyright 2010,2012 Joey Hess <joey@kitenet.net>
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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 Utility.CopyFile (copyFileExternal) where
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import Common
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import qualified Build.SysConfig as SysConfig
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{- The cp command is used, because I hate reinventing the wheel,
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- and because this allows easy access to features like cp --reflink. -}
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copyFileExternal :: FilePath -> FilePath -> IO Bool
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copyFileExternal src dest = do
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whenM (doesFileExist dest) $
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removeFile dest
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boolSystem "cp" $ params ++ [File src, File dest]
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where
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params = map snd $ filter fst
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[ (SysConfig.cp_reflink_auto, Param "--reflink=auto")
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, (SysConfig.cp_a, Param "-a")
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, (SysConfig.cp_p && not SysConfig.cp_a, Param "-p")
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]
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