On Wed, May 03, 2000 at 05:37:42AM -0700, Kenneth Scharf wrote: > I installed grip, but I can't run in unless I am root > (sudo, or suid). The error I get is 'can't access cd > rom drive'. My /dev/scd1 is owned by root, group is > cdrom. The drive is actually on /dev/hdc physically > but I am running scsi-ide emulation. I also have a > 'real' scsi cdrom that is /dev/scd0. I added myself > to the cdrom group (edited /etc/group as root) and > logged out and back in as myself. No joy, still can't > run grip or cdparanoia (actually it was cdparanoia > that issued the error message). I did chmod +s on > cdparanoia and grip and then it worked. But I should > be able to access the cdrom if I'm in the cdrom group? > I can access my /dev/dsp device by adding myself to > the audio group (I don't think xmmm is suid, I can run > it as a user in the audio group). > Ideas?
If it's anything like "real" scsi devices, then the scsi generic devices must be writeable. Unfortunately these device id's can change if you add or remove scsi devices. I wrote a script to correct the permissions at system startup, but I must not be using it since I can't find the script. Anyway, notice that sg2 and sg3 are writeable by group cdrom. Only one of the devices is really writeable, but the script changes all sg devices back to crw------- root:root and then all cdroms (writeable or not) to crw-rw---- root:cdrom. freefall ~/technical $ ll /dev/sg* crw------- 1 root root 21, 0 Aug 18 1999 /dev/sg0 crw------- 1 root root 21, 1 Aug 18 1999 /dev/sg1 crw------- 1 root root 21, 10 Aug 18 1999 /dev/sg10 crw------- 1 root root 21, 11 Aug 18 1999 /dev/sg11 crw------- 1 root root 21, 12 Aug 18 1999 /dev/sg12 crw------- 1 root root 21, 13 Aug 18 1999 /dev/sg13 crw------- 1 root root 21, 14 Aug 18 1999 /dev/sg14 crw------- 1 root root 21, 15 Aug 18 1999 /dev/sg15 crw------- 1 root root 21, 16 Aug 18 1999 /dev/sg16 crw-rw---- 1 root cdrom 21, 2 Aug 18 1999 /dev/sg2 crw-rw---- 1 root cdrom 21, 3 Aug 18 1999 /dev/sg3 crw------- 1 root root 21, 4 Aug 18 1999 /dev/sg4 crw------- 1 root root 21, 5 Aug 18 1999 /dev/sg5 crw------- 1 root root 21, 6 Aug 18 1999 /dev/sg6 crw------- 1 root root 21, 7 Aug 18 1999 /dev/sg7 crw------- 1 root root 21, 8 Aug 18 1999 /dev/sg8 crw------- 1 root root 21, 9 Aug 18 1999 /dev/sg9 I think cdparanoia had some docs on how to determine the scsi generic device number to go along with a particular device, but I don't know how ide emulation affects it. -- Lee Bradshaw [EMAIL PROTECTED] (preferred) Alantro Communications [EMAIL PROTECTED]
