Messages in this thread | | | Date | Sun, 28 Nov 2004 15:25:29 +0100 (CET) | Subject | Re: Is controlling DVD speeds via SET_STREAMING supported? | From | "Thomas Fritzsche" <> |
| |
Hi,
(please CC me because I'm not subscribed to the list)
>> What Kernel do you use? > > Linux tienel 2.6.10-rc2-mm1 #1 SMP Wed Nov 17 01:19:53 EET 2004 i686 > GNU/Linux
Maybe you can give a 2.4.27'er kernel a try.
> > Actually now that I rebooted (for DVD flashing) and started back into > linux, after running dvdspeed it also says: > "scsi: unknown opcode 0xb6" (which is SET_STREAMING). Code for this is > in drivers/block/scsi_ioctl.c, and if I read it right, it can't prevent > root from executing that command.
I have the same impression after reading drivers/block/scsi_ioctl.c . I think you will need root permission to send this command, RW-Permission for the device file is not enough! Did you try this as root?
But I'm wondering that scsi_ioctl.c comes into play, because It's a ATAPI-Device. Isn't it? Do you use the scsi emulation? If so please try without.
> > I modified your speed-1.0 to open device O_RDWR, didn't help. > I modified it to also dump_sense after CMD_SEND_PACKET, it's just > duplicate packet.
No this will definitively not solve this issue. I will try to check this in the kernel, but because I'm not a kernel developer I will CC Jens Axboe. Maybe he can help?
Kind Regards, Thomas Fritzsche
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |