From 054016e18b2e08c194346e08571394ec2308c3a9 Mon Sep 17 00:00:00 2001
From: Bill Joy <bill@ucbvax.Berkeley.EDU>
Date: Sun, 13 Jul 1980 01:14:41 -0800
Subject: [PATCH] limit code

SCCS-vsn: sys/kern/kern_clock.c 3.14
SCCS-vsn: sys/kern/kern_proc.c 3.16
---
 usr/src/sys/kern/kern_clock.c | 8 +++++---
 usr/src/sys/kern/kern_proc.c  | 7 ++++++-
 2 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/usr/src/sys/kern/kern_clock.c b/usr/src/sys/kern/kern_clock.c
index 115eb9b531..4535d2f36c 100644
--- a/usr/src/sys/kern/kern_clock.c
+++ b/usr/src/sys/kern/kern_clock.c
@@ -1,4 +1,4 @@
-/*	%H%	3.13	kern_clock.c	*/
+/*	%H%	3.14	kern_clock.c	*/
 
 #include "../h/param.h"
 #include "../h/systm.h"
@@ -227,16 +227,18 @@ out:
 		 */
 		if (bclnlist != NULL)
 			wakeup((caddr_t)&proc[2]);
-#ifdef ERNIE
 		if (USERMODE(ps)) {
 			pp = u.u_procp;
+#ifdef ERNIE
 			if (pp->p_uid)
 				if (pp->p_nice == NZERO && u.u_vm.vm_utime > 600 * HZ)
 					pp->p_nice = NZERO+4;
 			(void) setpri(pp);
 			pp->p_pri = pp->p_usrpri;
-		}
 #endif
+			if (u.u_vm.vm_utime+u.u_vm.vm_stime > u.u_limit[LIM_CPU])
+				psignal(pp, SIGXCPU);
+		}
 	}
 	if (!BASEPRI(ps))
 		unhang();
diff --git a/usr/src/sys/kern/kern_proc.c b/usr/src/sys/kern/kern_proc.c
index 0b8fde935b..1b752ace76 100644
--- a/usr/src/sys/kern/kern_proc.c
+++ b/usr/src/sys/kern/kern_proc.c
@@ -1,4 +1,4 @@
-/*	kern_proc.c	3.15	%G%	*/
+/*	kern_proc.c	3.16	%G%	*/
 
 #include "../h/param.h"
 #include "../h/systm.h"
@@ -467,6 +467,7 @@ exit(rv)
 		plock(u.u_rdir);
 		iput(u.u_rdir);
 	}
+	u.u_limit[LIM_FSIZE] = INFINITY;
 	acct();
 	vrelpt(u.u_procp);
 	vrelu(u.u_procp, 0);
@@ -684,6 +685,10 @@ sbreak()
 	if (n < 0)
 		n = 0;
 	d = clrnd(n - u.u_dsize);
+	if (u.u_dsize+d > u.u_limit[LIM_DATA]) {
+		u.u_error = ENOMEM;
+		return;
+	}
 	if (chksize(u.u_tsize, u.u_dsize+d, u.u_ssize))
 		return;
 	if (swpexpand(u.u_dsize+d, u.u_ssize, &u.u_dmap, &u.u_smap)==0)
-- 
2.20.1