From cdde3550dc188f493daf82ef9d9acf8b85d9d722 Mon Sep 17 00:00:00 2001
From: Maria Matejka <mq@ucw.cz>
Date: Sat, 17 Aug 2019 14:57:41 +0200
Subject: [PATCH] Unix socket: Path length check directly before copying the
 path.

This is not needed as the string is always short enough, anyway
it may be needed in future and one strlen during BIRD start is
cheap enough.
---
 sysdep/unix/io.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/sysdep/unix/io.c b/sysdep/unix/io.c
index f6cc0e32..9d54a2c3 100644
--- a/sysdep/unix/io.c
+++ b/sysdep/unix/io.c
@@ -1495,7 +1495,9 @@ sk_open_unix(sock *s, char *name)
   if (fcntl(fd, F_SETFL, O_NONBLOCK) < 0)
     return -1;
 
-  /* Path length checked in test_old_bird() */
+  /* Path length checked in test_old_bird() but we may need unix sockets for other reasons in future */
+  ASSERT_DIE(strlen(name) < sizeof(sa.sun_path));
+
   sa.sun_family = AF_UNIX;
   strcpy(sa.sun_path, name);