From 68b749ff2f4e269e9902b4f26470fe3e14c5d075 Mon Sep 17 00:00:00 2001
From: Xin LI <delphij@FreeBSD.org>
Date: Sat, 14 May 2005 14:03:21 +0000
Subject: [PATCH] Revert to old ttyname_r behavior that when _ioctl() returns 0
 (SUCCEEDED), return the buffer immediately.  This will permit ssh and/or PAM
 logins broken by previous commit.

The (potential) underlying problem is still under investigation.

Point hat to:	me
---
 lib/libc/gen/ttyname.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/libc/gen/ttyname.c b/lib/libc/gen/ttyname.c
index 54bc24b14e2..56e7ce142ae 100644
--- a/lib/libc/gen/ttyname.c
+++ b/lib/libc/gen/ttyname.c
@@ -83,7 +83,7 @@ ttyname_r(int fd, char *buf, size_t len)
 	fgn.len = len - strlen(buf);
 	fgn.buf = buf + strlen(buf);
 	if (!_ioctl(fd, FIODGNAME, &fgn))
-		return (EINVAL);
+		return (0);
 	devname_r(sb.st_rdev, S_IFCHR,
 	    buf + strlen(buf), sizeof(buf) - strlen(buf));
 	return (0);