From fcc3b6999ed94cae262ffd7d69030907b9904663 Mon Sep 17 00:00:00 2001
From: Peter Wemm <peter@FreeBSD.org>
Date: Fri, 22 Sep 1995 17:01:28 +0000
Subject: [PATCH] Make ttyname() use posix-style tcgetattr() to check to see
 that it's running on a tty.  (Same as isatty()) The old-style TIOCGETP ioctl
 wouldn't fly if the kernel didn't have COMPAT_43. Submitted by:	Carl
 Fongheiser <cmf@netins.net>

---
 lib/libc/gen/ttyname.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/lib/libc/gen/ttyname.c b/lib/libc/gen/ttyname.c
index 2f47bd66b4c..f024f52e20c 100644
--- a/lib/libc/gen/ttyname.c
+++ b/lib/libc/gen/ttyname.c
@@ -39,7 +39,7 @@ static char sccsid[] = "@(#)ttyname.c	8.2 (Berkeley) 1/27/94";
 #include <sys/stat.h>
 #include <fcntl.h>
 #include <dirent.h>
-#include <sgtty.h>
+#include <termios.h>
 #include <db.h>
 #include <string.h>
 #include <paths.h>
@@ -52,7 +52,7 @@ ttyname(fd)
 	int fd;
 {
 	struct stat sb;
-	struct sgttyb ttyb;
+	struct termios ttyb;
 	DB *db;
 	DBT data, key;
 	struct {
@@ -61,7 +61,7 @@ ttyname(fd)
 	} bkey;
 
 	/* Must be a terminal. */
-	if (ioctl(fd, TIOCGETP, &ttyb) < 0)
+	if (tcgetattr(fd, &ttyb) < 0)
 		return (NULL);
 	/* Must be a character device. */
 	if (fstat(fd, &sb) || !S_ISCHR(sb.st_mode))