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Diffstat (limited to 'Utility/FileMode.hs')
| -rw-r--r-- | Utility/FileMode.hs | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/Utility/FileMode.hs b/Utility/FileMode.hs index ddb89b2aa..0f7046333 100644 --- a/Utility/FileMode.hs +++ b/Utility/FileMode.hs @@ -101,3 +101,12 @@ isSticky = checkMode stickyMode setSticky :: FilePath -> IO () setSticky f = modifyFileMode f $ addModes [stickyMode] + +{- Writes a file, ensuring that its modes do not allow it to be read + - by anyone other than the current user, before any content is written. -} +writeFileProtected :: FilePath -> String -> IO () +writeFileProtected file content = do + h <- openFile file WriteMode + modifyFileMode file $ removeModes [groupReadMode, otherReadMode] + hPutStr h content + hClose h |