From c0fef53b1e038a29ea57825af88fceeebdab874e Mon Sep 17 00:00:00 2001
From: Roland McGrath <roland@gnu.org>
Date: Wed, 5 Apr 1995 04:39:51 +0000
Subject: [PATCH] * misc/login_tty.c [! TIOCSCTTY]: Try an emulation using
 ttyname

 	and open.
---
 ChangeLog        |  3 +++
 misc/login_tty.c | 20 ++++++++++++++++++++
 2 files changed, 23 insertions(+)

diff --git a/ChangeLog b/ChangeLog
index 68e389ad03..82c406b44a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,8 @@
 Wed Apr  5 00:13:45 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
 
+	* misc/login_tty.c [! TIOCSCTTY]: Try an emulation using ttyname
+ 	and open.
+
 	* sysdeps/i386/bsd-_setjmp.S: Fix typo in name: setjmp -> _setjmp.
 
 Tue Apr  4 00:48:53 1995  Roland McGrath  <roland@churchy.gnu.ai.mit.edu>
diff --git a/misc/login_tty.c b/misc/login_tty.c
index 6ea2b9b07f..e4e075c6ed 100644
--- a/misc/login_tty.c
+++ b/misc/login_tty.c
@@ -38,14 +38,34 @@ static char sccsid[] = "@(#)login_tty.c	8.1 (Berkeley) 6/4/93";
 #include <sys/param.h>
 #include <sys/ioctl.h>
 #include <unistd.h>
+#include <fcntl.h>
 
 int
 login_tty(fd)
 	int fd;
 {
 	(void) setsid();
+#ifdef TIOCSCTTY
 	if (ioctl(fd, TIOCSCTTY, (char *)NULL) == -1)
 		return (-1);
+#else
+	{
+	  /* This might work.  */
+	  char *fdname = ttyname (fd);
+	  int newfd;
+	  if (fdname)
+	    {
+	      if (fd != 0)
+		(void) close (0);
+	      if (fd != 1)
+		(void) close (1);
+	      if (fd != 2)
+		(void) close (2);
+	      newfd = open (fdname, O_RDWR);
+	      (void) close (newfd);
+	    }
+	}
+#endif
 	(void) dup2(fd, 0);
 	(void) dup2(fd, 1);
 	(void) dup2(fd, 2);
-- 
2.43.5