linux-ext4 - [PATCH 2/2] ext2fs: check fsync error code

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Message-Id: <1481122518-19021-2-git-send-email-dmonakhov@openvz.org>
Date:   Wed,  7 Dec 2016 18:55:18 +0400
From:   Dmitry Monakhov <dmonakhov@...nvz.org>
To:     linux-ext4@...r.kernel.org
Cc:     tytso@....edu, Dmitry Monakhov <dmonakhov@...nvz.org>
Subject: [PATCH 2/2] ext2fs: check fsync error code

testcase: f_mke2fs_baddisk
Signed-off-by: Dmitry Monakhov <dmonakhov@...nvz.org>
---
 lib/ext2fs/unix_io.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lib/ext2fs/unix_io.c b/lib/ext2fs/unix_io.c
index 429ea24..6c54cbe 100644
--- a/lib/ext2fs/unix_io.c
+++ b/lib/ext2fs/unix_io.c
@@ -1030,7 +1030,10 @@ static errcode_t unix_flush(io_channel channel)
 #ifndef NO_IO_CACHE
 	retval = flush_cached_blocks(channel, data, 0);
 #endif
-	fsync(data->dev);
+	if(fsync(data->dev)) {
+		if (!retval)
+			retval = errno;
+	}
 	return retval;
 }
 
-- 
2.7.4

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