Christoph Kukulies wrote: > I configured a kernel (RH 6.1) 2.2.17-14 to have > IDE-SCSI built in and I believe all that's necessary > for cdrecord (1.8a29). > > Under root I can cdrecord -scanbus and I get > # cdrecord -scanbus > Cdrecord release 1.8a29 Copyright (C) 1995-1999 Jörg Schilling > Using libscg version 'schily-0.1' > scsibus0: > 0,0,0 0) 'LITE-ON ' 'LTR-12101B ' 'LS38' Removable CD-ROM > 0,1,0 1) * > 0,2,0 2) * > 0,3,0 3) * > 0,4,0 4) * > 0,5,0 5) * > 0,6,0 6) * > 0,7,0 7) * > > I also have linked /dev/scd0 to /dev/sg0 > lrwxrwxrwx 1 root root 9 Feb 26 12:52 /dev/sg0 -> /dev/scd0
Christoph, Don't make the above symbolic link. Cdrecord is trying to find which scsi cdrom device (i.e. /dev/scd<n>) corresponds to a scsi generic device (i.e. /dev/sg<m>). Once the relationship is found then cdrecord uses the scsi generic interface to send low level SCSI commands to the cdwriter. Lets say the /dev/scd0 <-> /dev/sg1 . To use cdrecord as a non-root user, read permissions must be set for /dev/scd0 while read-write permissions must be set on /dev/sg1. In Linux this applies whether the cdwriter is on a SCSI parallel interface (SPI), on a ATA/IDE bus (ATAPI cdwriter), ieee1394, usb-2, etc. > I gave scd0 group cdwriter membership and I belong to this group too. > WHen I now do cdrecord -scanbus under my normal user role I get this: > cdrecord -scanbus > Cdrecord release 1.8a29 Copyright (C) 1995-1999 Jörg Schilling > cdrecord: Permission denied. Cannot open '/dev/sg1'. Cannot open SCSI driver. > > It is funny that when I satisfy now sg1 to be linked to scd1 > that cdrecord goes one higher and claims it cannot open sg2 ans so on. Ahhhh. Please don't be so creative. Doug Gilbert -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
