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Re: cdrecord warning

On Wed, Jun 02, 2004 at 05:48:06PM +0200, Joachim Fahnenmueller wrote:
> Hi everybody,
> when I try to burn a CD as a normal user, I often get this warning:
> cdrecord.mmap: Operation not permitted. WARNING: Cannot set RR-scheduler
> cdrecord.mmap: Permission denied. WARNING: Cannot set priority using
> setpriority().
> cdrecord.mmap: WARNING: This causes a high risk for buffer underruns.
> version: Cdrecord 2.01a16 (i686-pc-linux-gnu)
> kernel: 2.4.18
> Why, and what can I do?

setpriority() needs root privileges to "lower" (ie. make "more
important") a process's priority.

# chmod u+s /usr/bin/cdrecord.mmap


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