diff options
| author | Stephen Tweedie <sct@redhat.com> | 2005-05-18 15:22:31 (GMT) |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-05-18 16:10:02 (GMT) |
| commit | e72022e13d659bece2fc9cb2dd97afa67047dbca (patch) | |
| tree | c71a8bf39274d7ad105e0618a7f0ff57d1509c17 /drivers | |
| parent | d1ded203adf16b42ca90e9041120ae465ca5c4a6 (diff) | |
| download | linux-e72022e13d659bece2fc9cb2dd97afa67047dbca.tar.xz | |
[PATCH] Fix filp being passed through raw ioctl handler
Don't pass meaningless file handles to block device ioctls.
The recent raw IO ioctl-passthrough fix started passing the raw file
handle into the block device ioctl handler. That's unlikely to be
useful, as the file handle is actually open on a character-mode raw
device, not a block device, so dereferencing it is not going to yield
useful results to a block device ioctl handler.
Previously we just passed NULL; also not a value that can usefully
be dereferenced, but at least if it does happen, we'll oops instead of
silently pretending that the file is a block device, so NULL is the more
defensive option here. This patch reverts to that behaviour.
Noticed by Al Viro.
Signed-off-by: Stephen Tweedie <sct@redhat.com>
Acked-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/char/raw.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/char/raw.c b/drivers/char/raw.c index 131465e..ca5f42b 100644 --- a/drivers/char/raw.c +++ b/drivers/char/raw.c @@ -122,7 +122,7 @@ raw_ioctl(struct inode *inode, struct file *filp, { struct block_device *bdev = filp->private_data; - return blkdev_ioctl(bdev->bd_inode, filp, command, arg); + return blkdev_ioctl(bdev->bd_inode, NULL, command, arg); } static void bind_device(struct raw_config_request *rq) |