From: mpi <mpi@openbsd.org>
Date: Mon, 8 Jan 2018 11:54:28 +0000 (+0000)
Subject: Allow TIOCUCNTL issued on a pty(4) master in promise "tty".
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=3268d68dcb9980823e813763687348eab97edc5a;p=openbsd

Allow TIOCUCNTL issued on a pty(4) master in promise "tty".

This will be soon be used to emulate BREAK commands in vmd(8).

ok nicm@, ccardenas@, deraadt@
---

diff --git a/sys/kern/kern_pledge.c b/sys/kern/kern_pledge.c
index 232d3003095..3586720d0ad 100644
--- a/sys/kern/kern_pledge.c
+++ b/sys/kern/kern_pledge.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: kern_pledge.c,v 1.226 2017/12/12 01:12:34 deraadt Exp $	*/
+/*	$OpenBSD: kern_pledge.c,v 1.227 2018/01/08 11:54:28 mpi Exp $	*/
 
 /*
  * Copyright (c) 2015 Nicholas Marriott <nicm@openbsd.org>
@@ -1123,6 +1123,14 @@ pledge_ioctl(struct proc *p, long com, struct file *fp)
 			if (cdevsw[major(vp->v_rdev)].d_open != ptmopen)
 				break;
 			return (0);
+		case TIOCUCNTL:		/* vmd */
+			if ((p->p_p->ps_pledge & PLEDGE_RPATH) == 0)
+				break;
+			if ((p->p_p->ps_pledge & PLEDGE_WPATH) == 0)
+				break;
+			if (cdevsw[major(vp->v_rdev)].d_open != ptcopen)
+				break;
+			return (0);
 #endif /* NPTY > 0 */
 		case TIOCSPGRP:
 			if ((p->p_p->ps_pledge & PLEDGE_PROC) == 0)