linux-kernel - Re: [RFC/PATCH] usb-storage: wait for device scanning before mounting root

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: <Pine.LNX.4.44L0.0806191735570.2229-100000@iolanthe.rowland.org>
Date:	Thu, 19 Jun 2008 17:39:35 -0400 (EDT)
From:	Alan Stern <stern@...land.harvard.edu>
To:	Matthew Wilcox <matthew@....cx>
cc:	Pekka J Enberg <penberg@...helsinki.fi>,
	Stefan Richter <stefanr@...6.in-berlin.de>,
	<linux-kernel@...r.kernel.org>, <dsd@...too.org>,
	<mdharm-usb@...-eyed-alien.net>, <linux-usb@...r.kernel.org>,
	<vegardno@....uio.no>, <James.Bottomley@...senPartnership.com>,
	<linux-scsi@...r.kernel.org>, Greg KH <greg@...ah.com>
Subject: Re: [RFC/PATCH] usb-storage: wait for device scanning before mounting
 root

On Thu, 19 Jun 2008, Matthew Wilcox wrote:

> This discussion seemed to die off ... did anything ever come of it?

As I recall, it died because the whole notion was very poorly defined
to begin with.  The idea was to stop waiting when all the SCSI buses
had been scanned -- but there's no way to know when that occurs because
new buses can be added at any time.

Maybe a better approach would be to poll at reasonable intervals 
(HZ/10, for example) for the existence of the root device.  If it 
hasn't appeared after some reasonable time (30 seconds?) then give up.

Alan Stern

--
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/