===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/wall/ttymsg.c,v
retrieving revision 1.18
retrieving revision 1.19
diff -c -r1.18 -r1.19
*** src/usr.bin/wall/ttymsg.c	2019/05/16 06:23:15	1.18
--- src/usr.bin/wall/ttymsg.c	2019/06/28 13:35:05	1.19
***************
*** 1,4 ****
! /*	$OpenBSD: ttymsg.c,v 1.18 2019/05/16 06:23:15 deraadt Exp $	*/
  /*	$NetBSD: ttymsg.c,v 1.3 1994/11/17 07:17:55 jtc Exp $	*/
  
  /*
--- 1,4 ----
! /*	$OpenBSD: ttymsg.c,v 1.19 2019/06/28 13:35:05 deraadt Exp $	*/
  /*	$NetBSD: ttymsg.c,v 1.3 1994/11/17 07:17:55 jtc Exp $	*/
  
  /*
***************
*** 91,97 ****
  	 * open will fail on slip lines or exclusive-use lines
  	 * if not running as root; not an error.
  	 */
! 	if ((fd = open(device, O_WRONLY|O_NONBLOCK, 0)) < 0) {
  		if (errno == EBUSY || errno == EACCES)
  			return (NULL);
  		(void) snprintf(errbuf, sizeof(errbuf),
--- 91,97 ----
  	 * open will fail on slip lines or exclusive-use lines
  	 * if not running as root; not an error.
  	 */
! 	if ((fd = open(device, O_WRONLY|O_NONBLOCK, 0)) == -1) {
  		if (errno == EBUSY || errno == EACCES)
  			return (NULL);
  		(void) snprintf(errbuf, sizeof(errbuf),
***************
*** 100,106 ****
  	}
  
  	if (getuid()) {
! 		if (fstat(fd, &st) < 0 ||
  		    (st.st_mode & S_IWGRP) == 0) {
  			close(fd);
  			return (NULL);
--- 100,106 ----
  	}
  
  	if (getuid()) {
! 		if (fstat(fd, &st) == -1 ||
  		    (st.st_mode & S_IWGRP) == 0) {
  			close(fd);
  			return (NULL);
***************
*** 143,149 ****
  				_exit(1);
  			}
  			cpid = fork();
! 			if (cpid < 0) {
  				(void) snprintf(errbuf, sizeof(errbuf),
  				    "fork: %s", strerror(errno));
  				(void) close(fd);
--- 143,149 ----
  				_exit(1);
  			}
  			cpid = fork();
! 			if (cpid == -1) {
  				(void) snprintf(errbuf, sizeof(errbuf),
  				    "fork: %s", strerror(errno));
  				(void) close(fd);