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Re: [Halevt-dev] halevt user cannot change speed on /dev/dvd
From: |
Bengt Nilsson |
Subject: |
Re: [Halevt-dev] halevt user cannot change speed on /dev/dvd |
Date: |
Sat, 7 Jan 2012 12:03:58 +0100 |
7 jan 2012 kl. 01:18 skrev Patrice Dumas:
> On Fri, Jan 06, 2012 at 11:55:41PM +0000, Bengt Nilsson wrote:
>> Hi!
>>
>> I get "permission denied" for the line "/sbin/hdparm -E4 /dev/dvd"
>> when I do "halevt -d", while "halevt -d -u root" works.
>
> My wild guess is that the halevt user should be given some kind
> of permission on the device. So maybe you need to put the halevt
> user in a special device group, like cdrom, or maybe you need
> to add some configuration in Consolekit configuration files.
> If this is indeed the issue at hand, the answer will be
> specific of your GNU/Linux distribution and of your setup.
As myself, I could do this operation from terminal without problems,
I added all groups that I had in my own user id/gid, (halevt had plugin
already), it still did not work for the halevt daemon.
The only difference between me and the halevt user was the id and gid.
>
> To test whether it is linked with halevt or merely a permission
> issue, you can su as the halevt user and check whether the
> command still errors out.
A good idea, I will try it.
>
>> Is it safe to use root as the HALEVT_USER?
>
> Not really.
>
>> Would it not be better to give user halevt enough rights to do this task?
>
> Yes, it would be better.
>
> --
> Pat
>