From 9ba6e18ce6153f785915f72e8a999b09668d7a6a Mon Sep 17 00:00:00 2001
From: rwatson <rwatson@FreeBSD.org>
Date: Thu, 12 Apr 2001 20:46:26 +0000
Subject: [PATCH] o Limit process information leakage by introducing a
 p_can(...P_CAN_SEE...)   in rtprio()'s RTP_LOOKIP implementation.

Obtained from:	TrustedBSD Project
---
 sys/kern/kern_resource.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sys/kern/kern_resource.c b/sys/kern/kern_resource.c
index fa1add18d109..805d6aafe246 100644
--- a/sys/kern/kern_resource.c
+++ b/sys/kern/kern_resource.c
@@ -264,6 +264,8 @@ rtprio(curp, uap)
 
 	switch (uap->function) {
 	case RTP_LOOKUP:
+		if ((error = p_can(curp, p, P_CAN_SEE, NULL)))
+			return (error);
 		pri_to_rtp(&p->p_pri, &rtp);
 		return (copyout(&rtp, uap->rtp, sizeof(struct rtprio)));
 	case RTP_SET: