Subject: Re: OK to allow raw SCSI requests on tapes?
To: Matthias Drochner <drochner@zelux6.zel.kfa-juelich.de>
From: Jason Thorpe <thorpej@nas.nasa.gov>
List: tech-kern
Date: 07/16/1998 10:25:08
On Thu, 16 Jul 1998 12:14:54 +0200 (MET DST)
Matthias Drochner <drochner@zelux6.zel.kfa-juelich.de> wrote:
> Are there objections?
My only concern about this is that you could issue a raw read command,
which could screw up the internal state-keeping of the tape driver...
On the other hand, we supply the rope...
>
> best regards
> Matthias
>
> Index: dev/scsipi/st.c
> ===================================================================
> RCS file: /cvsroot/src/sys/dev/scsipi/st.c,v
> retrieving revision 1.91
> diff -c -2 -r1.91 st.c
> *** st.c 1998/07/15 20:13:57 1.91
> --- st.c 1998/07/16 10:08:39
> ***************
> *** 1320,1328 ****
>
> default:
> ! if (STMODE(dev) == CTLMODE)
> ! error = scsipi_do_ioctl(st->sc_link, dev, cmd, arg,
> ! flag, p);
> ! else
> ! error = ENOTTY;
> break;
> }
> --- 1320,1325 ----
>
> default:
> ! error = scsipi_do_ioctl(st->sc_link, dev, cmd, arg,
> ! flag, p);
> break;
> }
Jason R. Thorpe thorpej@nas.nasa.gov
NASA Ames Research Center Home: +1 408 866 1912
NAS: M/S 258-5 Work: +1 650 604 0935
Moffett Field, CA 94035 Pager: +1 650 940 5942