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Restrict idleprio to superuser:

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Realtime priority has to be restricted for reasons which should be
obvious. However, for idle priority, there is a potential for
system deadlock if an idleprio process gains a lock on a resource
that other processes need (and the idleprio process can't run
due to a CPU-bound normal process). Fix me! XXX
PR: 5639
This commit is contained in:
David Greenman 1998-02-04 18:43:10 +00:00
parent 1754677b27
commit 1540674007
1 changed files with 11 additions and 1 deletions
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12
sys/kern/kern_resource.c
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@ -36,7 +36,7 @@
* SUCH DAMAGE.
*
* @(#)kern_resource.c 8.5 (Berkeley) 1/21/94
* $Id: kern_resource.c,v 1.29 1997/12/16 17:40:17 eivind Exp $
* $Id: kern_resource.c,v 1.30 1998/01/19 12:39:00 bde Exp $
*/
#include "opt_compat.h"
@ -258,7 +258,17 @@ rtprio(curp, uap)
if (uap->pid)
return (EPERM);
/* can't set realtime priority */
/*
* Realtime priority has to be restricted for reasons which should be
* obvious. However, for idle priority, there is a potential for
* system deadlock if an idleprio process gains a lock on a resource
* that other processes need (and the idleprio process can't run
* due to a CPU-bound normal process). Fix me! XXX
*/
#if 0
if (rtp.type == RTP_PRIO_REALTIME)
#endif
if (rtp.type != RTP_PRIO_NORMAL)
return (EPERM);
}
switch (rtp.type) {