--- Net2/vm/vm_unix.c	2018/04/24 18:03:57	1.1
+++ Net2/vm/vm_unix.c	2018/04/24 18:14:51	1.1.1.3
@@ -37,7 +37,8 @@
  *
  * from: Utah $Hdr: vm_unix.c 1.1 89/11/07$
  *
- *	@(#)vm_unix.c	7.2 (Berkeley) 4/20/91
+ *	from: @(#)vm_unix.c	7.2 (Berkeley) 4/20/91
+ *	vm_unix.c,v 1.3 1993/07/17 16:03:17 mycroft Exp
  */
 
 /*
@@ -50,12 +51,14 @@
 
 #include "vm.h"
 
+struct obreak_args {
+	char	*nsiz;
+};
+
 /* ARGSUSED */
 obreak(p, uap, retval)
 	struct proc *p;
-	struct args {
-		char	*nsiz;
-	} *uap;
+	struct obreak_args *uap;
 	int *retval;
 {
 	register struct vmspace *vm = p->p_vmspace;
@@ -107,24 +110,26 @@ grow(p, sp)
 	/*
 	 * For common case of already allocated (from trap).
 	 */
-	if (sp >= USRSTACK - ctob(vm->vm_ssize))
+	if (sp >= (unsigned)vm->vm_maxsaddr + MAXSSIZ - ctob(vm->vm_ssize))
 		return (1);
 	/*
 	 * Really need to check vs limit and increment stack size if ok.
 	 */
-	si = clrnd(btoc(USRSTACK-sp) - vm->vm_ssize);
+	si = clrnd(btoc(vm->vm_maxsaddr + MAXSSIZ - sp) - vm->vm_ssize);
 	if (vm->vm_ssize + si > btoc(p->p_rlimit[RLIMIT_STACK].rlim_cur))
 		return (0);
 	vm->vm_ssize += si;
 	return (1);
 }
 
+struct ovadvise_args {
+	int	anom;
+};
+
 /* ARGSUSED */
 ovadvise(p, uap, retval)
 	struct proc *p;
-	struct args {
-		int	anom;
-	} *uap;
+	struct ovadvise_args *uap;
 	int *retval;
 {