diff options
Diffstat (limited to 'Propellor/Property/File.hs')
| -rw-r--r-- | Propellor/Property/File.hs | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/Propellor/Property/File.hs b/Propellor/Property/File.hs index af4f554f..80c69d9b 100644 --- a/Propellor/Property/File.hs +++ b/Propellor/Property/File.hs @@ -2,6 +2,8 @@ module Propellor.Property.File where import Propellor +import System.Posix.Files + type Line = String -- | Replaces all the content of a file. @@ -32,13 +34,19 @@ fileProperty :: Desc -> ([Line] -> [Line]) -> FilePath -> Property fileProperty desc a f = Property desc $ go =<< doesFileExist f where go True = do - ls <- lines <$> catchDefaultIO [] (readFile f) + ls <- lines <$> readFile f let ls' = a ls if ls' == ls then noChange - else makeChange $ viaTmp writeFile f (unlines ls') + else makeChange $ viaTmp updatefile f (unlines ls') go False = makeChange $ writeFile f (unlines $ a []) + -- viaTmp makes the temp file mode 600. + -- Replicate the original file mode before moving it into place. + updatefile f' content = do + writeFile f' content + getFileStatus f >>= setFileMode f' . fileMode + -- | Ensures a directory exists. dirExists :: FilePath -> Property dirExists d = check (not <$> doesDirectoryExist d) $ Property (d ++ " exists") $ |