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| author | dg <dg@FreeBSD.org> | 1998-02-04 18:43:10 +0000 |
|---|---|---|
| committer | dg <dg@FreeBSD.org> | 1998-02-04 18:43:10 +0000 |
| commit | 13eef94007a8aa8da83a505a87e104867aa61262 (patch) | |
| tree | c8e486ad5b5ae4d21b33dd7a87a19667ffc7947b | |
| parent | dbf89ade74811dadd818e1a4fba5cd089a9b701d (diff) | |
| download | FreeBSD-src-13eef94007a8aa8da83a505a87e104867aa61262.zip FreeBSD-src-13eef94007a8aa8da83a505a87e104867aa61262.tar.gz | |
Restrict idleprio to superuser:
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
| -rw-r--r-- | sys/kern/kern_resource.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/sys/kern/kern_resource.c b/sys/kern/kern_resource.c index 5210a0e..d1bb77f 100644 --- a/sys/kern/kern_resource.c +++ b/sys/kern/kern_resource.c @@ -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) { |
