From: Eric Sandeen <[email protected]>
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 <[email protected]>
Cc: <[email protected]>
Cc: Mark Lord <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Josef Bacik <[email protected]>
Cc: Jan Kara <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
---
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)
_