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note about coreutils 9.0 supporting CoW by default

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Joey Hess 2021-09-30 14:12:58 -04:00
parent 8f3f25337a
commit 6de57642f4
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6
Utility/CopyFile.hs
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@ -59,7 +59,11 @@ copyFileExternal meta src dest = do
- an efficient copy of a file. Otherwise, returns False.
-
- The dest file must not exist yet, or it will fail to make a CoW copy,
- and will return False. -}
- and will return False.
-
- Note that in coreutil 9.0, cp uses CoW by default, without needing an
- option. This code is only needed to support older versions.
-}
copyCoW :: CopyMetaData -> FilePath -> FilePath -> IO Bool
copyCoW meta src dest
| BuildInfo.cp_reflink_supported = do