From 6662b49d35b75066a51852f7a551f74b0b1cf1eb Mon Sep 17 00:00:00 2001
From: Joey Hess <joeyh@joeyh.name>
Date: Fri, 5 Sep 2025 12:05:13 -0400
Subject: [PATCH] convert all bytestring readFile/writeFile to use
 Utility.FileIO

This is groundwork for setting the close-on-exec flag when opening
files, which will be done in Utility.FileIO or a similar module using the same
function names. The bytestring library does not set that flag, even though it
could, and IMHO should.

Note that there are many calls to the Prelude's readFile/writeFile/appendFile
still in git-annex, and this does not address those.

Sponsored-by: the NIH-funded NICEMAN (ReproNim TR&D3) project
---
 Build/Standalone.hs               | 4 ++--
 Remote/Directory/LegacyChunked.hs | 4 ++--
 Remote/Helper/Special.hs          | 2 +-
 Utility/FileIO.hs                 | 6 ++++--
 4 files changed, 9 insertions(+), 7 deletions(-)

diff --git a/Build/Standalone.hs b/Build/Standalone.hs
index b9a683fb0b..e0e9e56bee 100644
--- a/Build/Standalone.hs
+++ b/Build/Standalone.hs
@@ -15,7 +15,6 @@ import System.Environment (getArgs)
 import Control.Monad.IfElse
 import System.Posix.Files
 import Control.Monad
-import qualified Data.ByteString.Lazy as L
 import qualified Data.Map as M
 
 import Utility.SafeCommand
@@ -26,6 +25,7 @@ import Utility.Path.AbsRel
 import Utility.Directory
 import Utility.Env
 import Utility.SystemDirectory
+import qualified Utility.FileIO as F
 import Build.BundledPrograms
 #ifdef darwin_HOST_OS
 import System.IO
@@ -98,7 +98,7 @@ installGitLibs topdir = do
 						let linktarget' = progDir topdir </> takeFileName linktarget
 						unlessM (doesFileExist linktarget') $ do
 							createDirectoryIfMissing True (takeDirectory linktarget')
-							L.readFile f' >>= L.writeFile (fromOsPath linktarget')
+							F.readFile f >>= F.writeFile linktarget'
 						removeWhenExistsWith removeFile destf
 						rellinktarget <- relPathDirToFile
 							(takeDirectory destf)
diff --git a/Remote/Directory/LegacyChunked.hs b/Remote/Directory/LegacyChunked.hs
index 03dd7e398d..3773ed9172 100644
--- a/Remote/Directory/LegacyChunked.hs
+++ b/Remote/Directory/LegacyChunked.hs
@@ -52,7 +52,7 @@ storeLegacyChunked _ _ [] _ = error "bad storeLegacyChunked call"
 storeLegacyChunked meterupdate chunksize alldests@(firstdest:_) b
 	| L.null b = do
 		-- always write at least one file, even for empty
-		L.writeFile firstdest b
+		F.writeFile (toOsPath firstdest) b
 		return [firstdest]
 	| otherwise = storeLegacyChunked' meterupdate chunksize alldests (L.toChunks b) []
 storeLegacyChunked' :: MeterUpdate -> ChunkSize -> [FilePath] -> [S.ByteString] -> [FilePath] -> IO [FilePath]
@@ -103,7 +103,7 @@ retrieve locations d basek p _dest miv c = withOtherTmp $ \tmpdir -> do
 	let go = \k sink -> do
 		liftIO $ void $ withStoredFiles (fromOsPath d) (legacyLocations locations) k $ \fs -> do
 			forM_ fs $
-				F.appendFile' tmp <=< S.readFile
+				F.appendFile' tmp <=< F.readFile' . toOsPath
 			return True
 		b <- liftIO $ F.readFile tmp
 		liftIO $ removeWhenExistsWith removeFile tmp
diff --git a/Remote/Helper/Special.hs b/Remote/Helper/Special.hs
index cc1fdf20a3..c74cb1dde1 100644
--- a/Remote/Helper/Special.hs
+++ b/Remote/Helper/Special.hs
@@ -96,7 +96,7 @@ mkRetrievalVerifiableKeysSecure gc
 fileStorer :: (Key -> OsPath -> MeterUpdate -> Annex ()) -> Storer
 fileStorer a k (FileContent f) m = a k f m
 fileStorer a k (ByteContent b) m = withTmp k $ \f -> do
-	liftIO $ L.writeFile (fromOsPath f) b
+	liftIO $ F.writeFile f b
 	a k f m
 
 -- A Storer that expects to be provided with a L.ByteString of
diff --git a/Utility/FileIO.hs b/Utility/FileIO.hs
index f10cb20ffc..712877f0cb 100644
--- a/Utility/FileIO.hs
+++ b/Utility/FileIO.hs
@@ -1,4 +1,7 @@
-{- File IO on OsPaths.
+{- This is a subset of the functions provided by file-io.
+ -
+ - When not building with file-io, this provides equvilant
+ - RawFilePath versions.
  -
  - Since Prelude exports many of these as well, this needs to be imported
  - qualified.
@@ -41,7 +44,6 @@ import System.IO (IO, Handle, IOMode)
 import Prelude (return)
 import qualified System.File.OsPath as O
 import qualified Data.ByteString as B
-import qualified Data.ByteString.Lazy as L
 import Control.Applicative
 
 withFile :: OsPath -> IOMode -> (Handle -> IO r) -> IO r 
-- 
2.30.2