Messages in this thread |  | | Date | Fri, 01 Sep 2000 08:07:43 +0200 | From | Rene Mayrhofer <> | Subject | Re: Bug: remounting CD-ROM drives does not lock/unlock drive |
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Jens Axboe wrote: > > On Mon, Aug 28 2000, Rene Mayrhofer wrote: > > I already tried to do so, but I could not find a way.to lock the CD-ROM > > tray on my (SCSI DVD) CD-ROM drive after it has been mounted with the door > > not being lock. How can this be done ? > > > > 'setcd -l1' does not work > > I don't know setcd, but issuing a CDROM_LOCKDOOR ioctl with arg 1 > will lock the door. Unmounting is a different issue, because currently > you can't do that if the drive is opened more than once (which it will > be, mount + locking program). I guess we could work around this by allowing > root to unlock a busy drive, or some other hack like that. Ok, now I think to know what you are meaning: The program locking the door should stay active until the CD-ROM should be unlocked, right ?
I always though about issuing some single call to lock or unlock the drive (e.g. setcd), but I never thought about this. What do I have to do to make this possible ? Could you give me some hint on how to allow root to unlock it in a clean way ? I wouldn't be very happy to apply special 'CD-ROM bootable interim hack' patches to each kernel I build for the project. Is there a way to do this general enough so that it can go into the main kernel (maybe another config option in /proc/sys/dev/cdrom if root should be allowed to unlock under all conditions) ?
Thanks for your help, Rene - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/
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