From 9f179fe546b9dd323047e09917a508ae3ab3e4dd Mon Sep 17 00:00:00 2001
From: Igor Sysoev <igor@sysoev.ru>
Date: Fri, 30 Oct 2009 19:18:21 +0000
Subject: [PATCH] do not unlink unix domain socket file while online upgrade

---
 src/core/ngx_connection.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/core/ngx_connection.c b/src/core/ngx_connection.c
index b6246c402..6056c3f40 100644
--- a/src/core/ngx_connection.c
+++ b/src/core/ngx_connection.c
@@ -627,7 +627,8 @@ ngx_close_listening_sockets(ngx_cycle_t *cycle)
 #if (NGX_HAVE_UNIX_DOMAIN)
 
         if (ls[i].sockaddr->sa_family == AF_UNIX
-            && ngx_process != NGX_PROCESS_WORKER)
+            && ngx_process != NGX_PROCESS_WORKER
+            && ngx_new_binary == 0)
         {
             u_char *name = ls[i].addr_text.data + sizeof("unix:") - 1;