[lug] cdrecord with KRUD9

[Dan Ferris]

I didn't notice cdrecord was suid, so you are in fact correct.

Dan

Gary Hodges wrote:

> Dan Ferris wrote:
>
>> The group permissions on scd1 are set to read only.
>>
>> You could try to set them to 660.
>
>
> Thanks, but I had already tried that and got the same results.  There 
> is also the following in the notes section of man/info cdrecord:
>
> ---
> Never give write permissions  for  non  root  users  to  the  /dev/scg?
> devices  unless  you  would allow anybody to read/write/format all 
> your disks.
> ---
>
> Cheers,
> Gary
>
>
>>
>>
>> Gary Hodges wrote:
>>
>>> I'm having some trouble with cdrecord for regular users after my 
>>> jump to KRUD9 from RH7.2.  The notes section at the end of "man 
>>> cdrecord" suggest installing cdrecord as SUID root.  I think I have 
>>> done this
>>>
>>> [root at space bin]# ls -l cdrecord
>>> -rwsr-x---    1 root     disk       333603 May 12 18:34 cdrecord
>>>
>>> but I'm still getting the following warnings when I run cdrecord:
>>>
>>> cdrecord: Operation not permitted. WARNING: Cannot set RR-scheduler
>>> cdrecord: Permission denied. WARNING: Cannot set priority using 
>>> setpriority().
>>> cdrecord: WARNING: This causes a high risk for buffer underruns.
>>>
>>> If I let it continue it will create the CD, but I didn't used to get 
>>> these warnings.  The group disk exists and I have put myself in that 
>>> group.  I played around with this a week ago and today, trying 
>>> different permissions and omnerships.  Nothing I tried seemed to 
>>> make any difference.  Here are the current permissions and 
>>> ownerships of /dev/cdrom1 and /dev/scd1
>>>
>>> [hodges at space hodges]$ ls -l /dev/cdrom1
>>> lrwxrwxrwx    1 root     root            9 Sep 16 14:19 /dev/cdrom1 
>>> -> /dev/scd1
>>> [hodges at space hodges]$ ls -l /dev/scd1
>>> brw-r-----    1 root     disk      11,   1 Jan 30  2003 /dev/scd1
>>>
>>> Gary
>>>
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>>
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>
>
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