lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Message-ID: <20120126223037.GE28368@quack.suse.cz>
Date:	Thu, 26 Jan 2012 23:30:37 +0100
From:	Jan Kara <jack@...e.cz>
To:	Paolo Bonzini <pbonzini@...hat.com>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>, linux-scsi@...r.kernel.org,
	Jens Axboe <axboe@...nel.dk>,
	James Bottomley <JBottomley@...allels.com>, mmarek@...e.cz
Subject: Ioctl warning for a partition

  Hello,

  with your patches (commit 0bfc96cb in particular) to limit ioctl on
partitions we get warning:
dd: sending ioctl 80306d02 to a partition!
because dd checks whether given device is a tape (it's MTIOCGET ioctl).
It's easy enough to silence the warning the same way as
CDROM_GET_CAPABILITY since the ioctl is safe but it's not so simple for
32-bit userspace.  MTIOCGET32 is defined only in fs/compat_ioctl.c so we
cannot easily add it to scsi_verify_blk_ioctl(). Any opinion how to cleanly
solve this? The only idea I had was to define compat structures and ioctl
numbers in a special header and use it both in fs/compat_ioctl.c and in
block/scsi_ioctl.c.

								Honza
-- 
Jan Kara <jack@...e.cz>
SUSE Labs, CR
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ