linux-ext4 - [patch 07/15] compat_ioctl: hook up compat handler for FIEMAP ioctl

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Message-Id: <200908062207.n76M7b3d004529@imap1.linux-foundation.org>
Date:	Thu, 06 Aug 2009 15:07:37 -0700
From:	akpm@...ux-foundation.org
To:	torvalds@...ux-foundation.org
Cc:	akpm@...ux-foundation.org, sandeen@...hat.com, arnd@...db.de,
	jack@...e.cz, josef@...hat.com, linux-ext4@...r.kernel.org,
	lkml@....ca, stable@...nel.org
Subject: [patch 07/15] compat_ioctl: hook up compat handler for FIEMAP ioctl

From: Eric Sandeen <sandeen@...hat.com>

The FIEMAP_IOC_FIEMAP mapping ioctl was missing a 32-bit compat handler,
which means that 32-bit suerspace on 64-bit kernels cannot use this ioctl
command.

The structure is nicely aligned, padded, and sized, so it is just this
simple.

Tested w/ 32-bit ioctl tester (from Josef) on a 64-bit kernel on ext4.

Signed-off-by: Eric Sandeen <sandeen@...hat.com>
Cc: <linux-ext4@...r.kernel.org>
Cc: Mark Lord <lkml@....ca>
Cc: Arnd Bergmann <arnd@...db.de>
Cc: Josef Bacik <josef@...hat.com>
Cc: Jan Kara <jack@...e.cz>
Cc: <stable@...nel.org>
Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
---

 fs/compat_ioctl.c |    1 +
 1 file changed, 1 insertion(+)

diff -puN fs/compat_ioctl.c~compat_ioctl-hook-up-compat-handler-for-fiemap-ioctl fs/compat_ioctl.c
--- a/fs/compat_ioctl.c~compat_ioctl-hook-up-compat-handler-for-fiemap-ioctl
+++ a/fs/compat_ioctl.c
@@ -1905,6 +1905,7 @@ COMPATIBLE_IOCTL(FIONCLEX)
 COMPATIBLE_IOCTL(FIOASYNC)
 COMPATIBLE_IOCTL(FIONBIO)
 COMPATIBLE_IOCTL(FIONREAD)  /* This is also TIOCINQ */
+COMPATIBLE_IOCTL(FS_IOC_FIEMAP)
 /* 0x00 */
 COMPATIBLE_IOCTL(FIBMAP)
 COMPATIBLE_IOCTL(FIGETBSZ)
_
--
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