how to fix: "/dev/dsp: permission denied"

irasnyd

I keep getting this error when I try to play UT (and other games). The permissions on /dev/dsp are 555 (lr-xr-xr-x).

Genone · Posted: Fri Apr 25, 2003 2:17 am Post subject:

Well, for me /dev/dsp is a symlink to /dev/sound/dsp, which has permissions set to 660 (rw-rw----). This file is owned by user root and group audio. So you have to be either root or be in the audio group to use this.

irasnyd · Posted: Fri Apr 25, 2003 6:15 am Post subject:

Yep. Got it working. I guess when I tried to add myself to the audio group, I screwed something up, because I did it again, and now it's working great.

Thanks!

PARENA · Guru Joined: 06 Jan 2003 Posts: 349

I have a different problem. Using devfs and it says this in /etc/devfsd.conf

Anarky · n00b Joined: 25 May 2003 Posts: 30 Location: France

I also have this problem

Menno · n00b Joined: 28 May 2003 Posts: 6

The same like Anarky and Parena. I set /dev/sound to root.audio, with 660 through /etc/devfsd.conf. But indeed after a regular user has worked on the system, he/she is owner with 600 permissions.

I hope someone will come up with a solution.... I started digging but until now no result.

All the best

DuF · Advocate Joined: 09 Dec 2002 Posts: 2687 Location: Paris

Maybe there is a link with :

Menno · n00b Joined: 28 May 2003 Posts: 6

Yes, you are right, that's it.
Thanks a lot!
Menno

Menno · n00b Joined: 28 May 2003 Posts: 6

I followed DuF his advice to look at console.perms. I chose to comment out sound, and now it works fine. Permissions are set by /etc/devfsd.conf. I also fixed some permissions on floppy in console.perms, but here is what happens:
Permissions and ownership are set to:
<console> 0660 <floppy> 0660 root.floppy
But when "menno" or another user logs in, the permissions/ownership is as follows:
brw-rw---- 1 menno floppy 2, 28 Jan 1 1970 0u1440
Isn't this strange? This means that if a user logs in, he/she will become owner instead of root, who is explicitly set in /etc/security/console.perms.
I checked the man page, but no result, can someone explain this behaviour?

Thanks again!

DuF · Advocate Joined: 09 Dec 2002 Posts: 2687 Location: Paris

Yes, it's that, the first logged is the owner of the files, don't know why, but I've read this in this forum... maybe you can try to search threads about console.perms in gentoo forums to look if someone provide an explanation.

Menno · n00b Joined: 28 May 2003 Posts: 6

Yeah, good idea but I did that already, I read a lot of nice things but not that. Still this behaviour is strange. For example: A user starts the system, logs in, browses the web etc. Then he likes to scan a picture so he plugs the USB-scanner. The permissions will not be set by console.perms until somebody else logs in. Strange IMHO, I would think permissions need to be dealt with in one place (devfs is most suitable I'd say), this leads to confusion.

Thanks again!

gagern · n00b Joined: 26 Nov 2003 Posts: 54

The format of console.perm is:

Menno · n00b Joined: 28 May 2003 Posts: 6

This clarifies things, thanks. I think you mean can't instead of "can'"?

OK, it is possible to share devices as usual, by using perms of 0660 for example. However, my personal opinion is that it remains strange that the "first" logged in person becomes owner, not that it is very important, but it just doesn't make sense IMHO. On a single user system things are OK, but on a multi-user system it looks messy IMHO. Therefore I commented out things in console.perms and let devfsd.conf handle my permissions.

Thanks again!
Meno