[patch 16/28] compat_ioctl: hook up compat handler for FIEMAP ioctl

[Greg KH]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Eric Sandeen <sandeen@xxxxxxxxxx>

commit 69130c7cf96ea853dc5be599dd6a4b98907d39cc upstream.

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@xxxxxxxxxx>
Cc: <linux-ext4@xxxxxxxxxxxxxxx>
Cc: Mark Lord <lkml@xxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Josef Bacik <josef@xxxxxxxxxx>
Cc: Jan Kara <jack@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>

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

--- a/fs/compat_ioctl.c
+++ b/fs/compat_ioctl.c
@@ -1910,6 +1910,7 @@ 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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