From: Theodore Ts'o <tytso@mit.edu>
Date: Thu, 12 Jun 2025 16:33:44 +0000 (-0230)
Subject: fuse2fs: correctly handle system errno values in __translate_error()
X-Git-Url: https://git.whamcloud.com/?a=commitdiff_plain;h=71f046a788adbae163c9398fccf50fff89bb9083;p=tools%2Fe2fsprogs.git

fuse2fs: correctly handle system errno values in __translate_error()

Fixes: 81cbf1ef4f5dab ("misc: add fuse2fs, a FUSE server for e2fsprogs")
Reported-by: "Darrick J. Wong" <djwong@kernel.org>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
---

diff --git a/misc/fuse2fs.c b/misc/fuse2fs.c
index bc49edf..97b1c5b 100644
--- a/misc/fuse2fs.c
+++ b/misc/fuse2fs.c
@@ -4659,9 +4659,9 @@ static int __translate_error(ext2_filsys fs, ext2_ino_t ino, errcode_t err,
 	int is_err = 0;
 
 	/* Translate ext2 error to unix error code */
-	if (err < EXT2_ET_BASE)
-		goto no_translation;
 	switch (err) {
+	case 0:
+		break;
 	case EXT2_ET_NO_MEMORY:
 	case EXT2_ET_TDB_ERR_OOM:
 		ret = -ENOMEM;
@@ -4755,11 +4755,10 @@ static int __translate_error(ext2_filsys fs, ext2_ino_t ino, errcode_t err,
 		break;
 	default:
 		is_err = 1;
-		ret = -EIO;
+		ret = (err < 256) ? -err : -EIO;
 		break;
 	}
 
-no_translation:
 	if (!is_err)
 		return ret;