Ronald J. Hall wrote: > On Friday 13 May 2005 11:36 am, Miark wrote: > >>On Fri, 13 May 2005 10:05:32 +0100, Margot wrote: >> >>[a half-mile of useless quotes snipped--take a hint people] >> >> >>>One thing nobody seems to have mentioned so far - to burn >>>successfully, you must use k3b as root, not as normal user. >>> >>>If you open k3b as root - either use a root terminal to open >>>k3b, or use the command kdesu k3b in a run command box and >>>then give your root password - then you should have access to >>>ALL files, no need to copy them to /home. >> >>I've always understood that one should do as little as possible >>as root for security and whatever other reasons. Isn't this kind >>of a Bad Thing (tm) to make people su for such a common task? >> >>Miark > > > I feel the same way here Miark. After years and years of being told not to do > anything as root, unless absolutely necessary, MDK has suddenly, > inexplicably, reversed course. > > The question is, why? The info I'm getting is, that its a done deal. Also I > hear the other distros are not doing this (can someone verify this?). So it > comes back to, why MDK? > >From what I have read, it sounds liek you need to be root to set the priority of the burn process high enough to insure the buffer is always full. It is ether that, or burn a LOT slower to insure this. This is because of some changes to the kernel that prevent user-space programs from changing some settings. I think this was to prevent userspace programs from being able to slow the machine to a crawl. the downside is that it hampers programs like k3b when run as a normal user. There is a kernel patch to get around this, but then you open yourself up to the same problmes the change was made to correct.
What is needed is a program that does the actual burning that is suid root. (Sets the User ID to root when the program is run.) The problem here is that the program needs to be verry limmited in function so that it can not be used to break system security. Writing programs that can be run by normal users, with root access is not an easy thing! Mikkel -- Do not meddle in the affairs of dragons, for you are crunchy and taste good with Ketchup!
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