[PATCH] Fix block dev compat ioctl handling
Commit 33c2dca4957bd0da3e1af7b96d0758d97e708ef6 (trim file propagation
in block/compat_ioctl.c) removed the handling of some ioctls from
compat_blkdev_driver_ioctl. That caused them to be rejected as unknown
by the compat layer.
Signed-off-by: Andreas Schwab <schwab@suse.de>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/block/compat_ioctl.c b/block/compat_ioctl.c
index 3d3e7a4..d43e608 100644
--- a/block/compat_ioctl.c
+++ b/block/compat_ioctl.c
@@ -677,6 +677,29 @@
case DVD_WRITE_STRUCT:
case DVD_AUTH:
arg = (unsigned long)compat_ptr(arg);
+ /* These intepret arg as an unsigned long, not as a pointer,
+ * so we must not do compat_ptr() conversion. */
+ case HDIO_SET_MULTCOUNT:
+ case HDIO_SET_UNMASKINTR:
+ case HDIO_SET_KEEPSETTINGS:
+ case HDIO_SET_32BIT:
+ case HDIO_SET_NOWERR:
+ case HDIO_SET_DMA:
+ case HDIO_SET_PIO_MODE:
+ case HDIO_SET_NICE:
+ case HDIO_SET_WCACHE:
+ case HDIO_SET_ACOUSTIC:
+ case HDIO_SET_BUSSTATE:
+ case HDIO_SET_ADDRESS:
+ case CDROMEJECT_SW:
+ case CDROM_SET_OPTIONS:
+ case CDROM_CLEAR_OPTIONS:
+ case CDROM_SELECT_SPEED:
+ case CDROM_SELECT_DISC:
+ case CDROM_MEDIA_CHANGED:
+ case CDROM_DRIVE_STATUS:
+ case CDROM_LOCKDOOR:
+ case CDROM_DEBUG:
break;
default:
/* unknown ioctl number */