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-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <87bn46p2gk.fsf@linux.intel.com>
Date:	Mon, 16 May 2016 16:16:59 +0300
From:	Felipe Balbi <felipe.balbi@...ux.intel.com>
To:	Michal Nazarewicz <mina86@...a86.com>,
	Alan Stern <stern@...land.harvard.edu>
Cc:	"Du\, Changbin" <changbin.du@...el.com>,
	Al Viro <viro@...iv.linux.org.uk>,
	"gregkh\@linuxfoundation.org" <gregkh@...uxfoundation.org>,
	"rui.silva\@linaro.org" <rui.silva@...aro.org>,
	"k.opasiak\@samsung.com" <k.opasiak@...sung.com>,
	"lars\@metafoo.de" <lars@...afoo.de>,
	"linux-usb\@vger.kernel.org" <linux-usb@...r.kernel.org>,
	"linux-kernel\@vger.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] usb: gadget: f_fs: report error if excess data received

Michal Nazarewicz <mina86@...a86.com> writes:

>> Alan Stern <stern@...land.harvard.edu> writes:
>>> The point is that you don't know whether the host sent more data than
>>> expected.  All you know is that the host sent more data than the user
>>> asked the kernel for -- but maybe the user didn't ask for all the
>>> data that he expected.  Maybe the user wanted to retrieve the full
>>> set of data using two read() system calls.
>
> On Mon, May 16 2016, Felipe Balbi wrote:
>> right, but that just means we need to buffer the data instead of bailing
>> out of the first read() completely.
>
> Correct.
>
> I have a ~4h bus ride ahead of me so I’ll try to implement it.  If you
> don’t hear from me by the end of the day, there probably wasn’t enough
> space/comfort in the bus to use a laptop.

Cool, Michal. Thanks

seems like a kfifo would do well here(?)

-- 
balbi

Download attachment "signature.asc" of type "application/pgp-signature" (819 bytes)

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ