Index: mem.c
===================================================================
RCS file: /home/cvsup/freebsd/CVS/src/sys/i386/i386/mem.c,v
retrieving revision 1.38
retrieving revision 1.38.2.1
diff -u -r1.38 -r1.38.2.1
--- mem.c	1996/09/27 13:25:06	1.38
+++ mem.c	1997/10/23 22:14:24	1.38.2.1
@@ -169,6 +169,7 @@
 	int fmt;
 	struct proc *p;
 {
+	int error;
 	struct trapframe *fp;
 
 	switch (minor(dev)) {
@@ -179,6 +180,11 @@
 		return ENODEV;
 #endif
 	case 14:
+		error = suser(p->p_ucred, &p->p_acflag);
+		if (error != 0)
+			return (error);
+		if (securelevel > 0)
+			return (EPERM);
 		fp = (struct trapframe *)curproc->p_md.md_regs;
 		fp->tf_eflags |= PSL_IOPL;
 		break;