Re: [gentoo-dev] CDRW permissions and devfsd

[Bauno]

On Tuesday 03 September 2002 19:57, Martin Schlemmer wrote:
> > I really don't think so (everything's wrapped):
>
> I tend to disagree.  At least if not as module:

Of course, if "scsi generic suport" is compiled in the kernel, and not as a 
module, everything works perfectly. No problems at all. But if it's 
compiled as a module (sg), the default devfsd.conf doesn't work...you 
either have to killall -HUP devfsd AFTER the sg module is loaded, or change 
permissions on /dev/scsi/..../generic and NOT on /dev/sg*.

> Also, I think you are going about this the wrong way.  devfsd acts on
> triggers.  The default of cdrecord is to probe /dev/sg*, and not
> /dev/scsi/host.*/bus.*/target.*/lun.*/generic.  Thus rmmod sg, change to
> the "Default Gentoo style" devfsd.conf, killall -HUP devfsd, and then
> do: ls /dev/sg0.  After this check the permissions on
> /dev/scsi/host0/bus0/target0/lun0/generic.

Been there, done that: wrong permissions:

bauniga linux # rmmod sg
bauniga linux # killall -HUP devfsd
bauniga linux # ll /dev/sg0
lr-xr-xr-x    1 root     root           36 Sep  3 20:29 /dev/sg0 -> 
scsi/host0/bus0/target0/lun0/generic
bauniga linux # ll /dev/scsi/host0/bus0/target0/lun0/generic
crw-r-----    1 root     root      21,   0 Jan  1  1970 
/dev/scsi/host0/bus0/target0/lun0/generic


Sorry, but I think I'm right :) : if sg is compiled as module, you either 
killall -HUP devfsd *after* sg is loaded, or change the default devfsd.conf 
as I described in a previous e-mail.


-- 
Bauno - Eurydices, oro, properata retexite fata!
"Even now I can feel it. Buried somewhere deep inside. Watching me... 
waiting. But you know what scares me the most. When I can't fight it 
anymore. When it takes over. When I totally lose control. I like it."