From f701698297ec1d1230caaa9403362c3a2b95f5ed Mon Sep 17 00:00:00 2001
From: sin <sin@2f30.org>
Date: Fri, 16 Jan 2015 16:19:29 +0000
Subject: [PATCH] Don't do a blocking open in ttytostr()

---
 libutil/tty.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libutil/tty.c b/libutil/tty.c
index 0197f7e..bceb01e 100644
--- a/libutil/tty.c
+++ b/libutil/tty.c
@@ -72,7 +72,7 @@ ttytostr(int tty_maj, int tty_min, char *str, size_t n)
 
 		if ((int)major(sb.st_rdev) == tty_maj &&
 		    (int)minor(sb.st_rdev) == tty_min) {
-			fd = open(path, O_RDONLY);
+			fd = open(path, O_RDONLY | O_NONBLOCK);
 			if (fd < 0)
 				continue;
 			if (isatty(fd)) {