linux-kernel - Re: [PATCH] serial: DCC(JTAG) serial and console emulation support

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]

Date:	Fri, 08 Oct 2010 08:23:54 -0700
From:	Daniel Walker <dwalker@...eaurora.org>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
Cc:	Mike Frysinger <vapier@...too.org>, linux-kernel@...r.kernel.org,
	"Hyok S. Choi" <hyok.choi@...sung.com>,
	Tony Lindgren <tony@...mide.com>,
	Jeff Ohlstein <johlstei@...cinc.com>,
	Greg Kroah-Hartman <gregkh@...e.de>,
	Ben Dooks <ben-linux@...ff.org>,
	Alan Cox <alan@...ux.intel.com>,
	Kukjin Kim <kgene.kim@...sung.com>,
	Feng Tang <feng.tang@...el.com>,
	Tobias Klauser <tklauser@...tanz.ch>,
	Jason Wessel <jason.wessel@...driver.com>,
	Philippe Langlais <philippe.langlais@...ricsson.com>
Subject: Re: [PATCH] serial: DCC(JTAG) serial and console emulation support

On Fri, 2010-10-08 at 09:13 +0100, Alan Cox wrote:
> > It is , what's to stop any userspace from using ttyS0 ? .. There's lots
> > of binary userspaces in the embedded world, along with many strange
> > usages ..
> 
> So you change your file system, whoopee.

I'm assuming Hyok added this because it wasn't easy or possible to
change the file system .. I can imagine there are debugging situations
where that's true.

> And if your hypothetical user isn't able to do this then maybe instead of
> trying to screw up the kernel for everyone they should ask an
> undergraduate student who is smart enough to help them.

I don't think the kernel is going to implode if we allow an optional
ttyS override for debugging purposes.. I just don't see that "screwing"
up the kernel. I can even embedded that inside the C file, and not make
it a Kconfig option ..

Daniel

-- 
Sent by an consultant of the Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora
Forum.


--
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/