From: Jens Axboe <axboe@suse.de>
To: Jim Nelson <jimnelson@btinet.net>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Locking CD tray w/o opening device
Date: Fri, 14 Jun 2002 07:45:56 +0200 [thread overview]
Message-ID: <20020614054556.GE4779@suse.de> (raw)
In-Reply-To: <200206110328.g5B3SgL08447@marc2.theaimsgroup.com> <200206110328.g5B3SgL08447@marc2.theaimsgroup.com> <5.1.0.14.2.20020613150319.00a09360@mail.btinet.net>
On Thu, Jun 13 2002, Jim Nelson wrote:
> At 12:00 AM 6/11/02 -0500, you wrote:
> >You could echo "1" >/proc/sys/dev/cdrom/lock
> >
> >If you do this, even when a cd is *not* in the drive it will be locked.
> >For information like this, it might be best to open xchat, and head to
> >openprojects.net and join #linuxhelp. This is a good question, just
> >perhaps not right for the lkml?
>
>
> Um, No. My /proc/sys/dev/cdrom/lock defaults to a 1, and the drive opens
> when a disc is not present at the touch of the button.
Yeah, the above explanation of 'lock' is wrong. It merely controls
whether the tray should be locked when someone is using the CD-ROM. If
noone is using it, it will still be unlocked. There _is_ a var that
controls permanent locking, however it isn't exported through proc.
You'll have to use the CDROM_LOCKDOOR ioctl.
--
Jens Axboe
next prev parent reply other threads:[~2002-06-14 5:46 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-06-11 3:28 Locking CD tray w/o opening device Hank Leininger
2002-06-11 5:00 ` Austin Gonyou
2002-06-13 20:05 ` Jim Nelson
2002-06-14 5:45 ` Jens Axboe [this message]
-- strict thread matches above, loose matches on Subject: below --
2002-06-11 2:53 Nathan Neulinger
2002-06-11 3:20 ` Erik Andersen
2002-06-11 10:25 ` Andreas Roedl
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