/dev/hdc file permissions Questions

[Mark Sargent]

Paul Howarth wrote:

>On Wed, 2005-03-09 at 16:07 +0900, Mark Sargent wrote:
>  
>
>>Mark Sargent wrote:
>>
>>    
>>
>>>Hi All,
>>>
>>>sometimes I load a scsi cd-rw at boot. It's always loaded as /dev/hdc. 
>>>I have a coupla Qs about permissions etc. When it's loaded each time, 
>>>does the file /dev/hdc permissions get altered each time.? I ask this, 
>>>because, 2 dys ago, I changed the permissions of the file to 666, so 
>>>as to allow K3b to burn in root mode. This is because the burn process 
>>>stops mid burn with a 254 error stating cdrecord is not being run with 
>>>root priviliges. But, the permissions are back as 600 today. I would 
>>>have thought the file's permissions stay changed despite the loading 
>>>or not of a block device to that file.? Am I wrong..?
>>>
>>>      
>>>
>>Hi All,
>>
>>just to delve into this a little more; what are the default udev 
>>permissions/ownership for /dev/hdc /dev/scd0.? I get the following,
>>
>>[root at localhost dev]# ls -alh hdc scd0
>>brw-------  1 coolboarderguy disk 22, 0 Mar  9  2005 hdc
>>brw-------  1 coolboarderguy disk 11, 0 Mar  9  2005 scd0
>>
>>Shouldn't they be owned by root..? If no, then I get problems with 
>>cdrecorder/K3b. Burning stops mid-burn and gives the 254 error saying 
>>that cdrecorder is not with root priviliges. Little confused. Cheers.
>>    
>>
>
>You'll find there's a symlink created by udev:
>
>/dev/cdwriter -> hdc
>
>The device pointed to by this symlink will be owned by the currently-
>logged-in user, so that they can access the device.
>
>See /etc/security/console.perms
>
>The idea is to support cd burning as a non-root user, but it appears
>that this isn't working...
>
>Paul.
>  
>
Hi All,

thanx, Paul. I can only get K3b to burn with /dev/scd0 at 666 
permissions. Anything else and I get an error message, halfway through 
the burn process, along with permanently non-usable media(cd-r type). 
Cheers.

Mark Sargent.