linux-kernel - [PATCH] Fix error handling in HDIO

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Date:	Mon, 30 Apr 2007 12:54:48 +0200
From:	Andreas Schwab <schwab@...e.de>
To:	linux-kernel@...r.kernel.org
Subject: [PATCH] Fix error handling in HDIO_GETGEO compat wrapper

Don't clobber error from sys_ioctl in HDIO_GETGEO compat wrapper.

Signed-off-by: Andreas Schwab <schwab@...e.de>

---
 fs/compat_ioctl.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- linux-2.6.21.orig/fs/compat_ioctl.c	2007-04-26 13:40:52.000000000 +0200
+++ linux-2.6.21/fs/compat_ioctl.c	2007-04-29 23:50:45.000000000 +0200
@@ -670,8 +670,10 @@ static int hdio_getgeo(unsigned int fd, 
 	if (!err) {
 		err = copy_to_user (ugeo, &geo, 4);
 		err |= __put_user (geo.start, &ugeo->start);
+		if (err)
+			err = -EFAULT;
 	}
-	return err ? -EFAULT : 0;
+	return err;
 }
 
 static int hdio_ioctl_trans(unsigned int fd, unsigned int cmd, unsigned long arg)

Andreas.

-- 
Andreas Schwab, SuSE Labs, schwab@...e.de
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
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