From ff74c402d0502797fe4411178882bb3cb8e3ddd9 Mon Sep 17 00:00:00 2001
From: jiangheng <jiangheng12@huawei.com>
Date: Mon, 7 Mar 2022 23:30:12 +0800
Subject: [PATCH 05/34] fix LD_PRELOAD

---
 src/lstack/api/lstack_wrap.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/lstack/api/lstack_wrap.c b/src/lstack/api/lstack_wrap.c
index 7804ce9..6ee5639 100644
--- a/src/lstack/api/lstack_wrap.c
+++ b/src/lstack/api/lstack_wrap.c
@@ -44,6 +44,14 @@ enum KERNEL_LWIP_PATH {
 
 static inline enum KERNEL_LWIP_PATH select_path(int fd)
 {
+    if (posix_api == NULL) {
+        /* link liblstack.so using LD_PRELOAD mode will read liblstack.so,
+           poisx_api need to be initialized here */
+        if (posix_api_init() != 0) {
+            LSTACK_PRE_LOG(LSTACK_ERR, "posix_api_init failed\n");
+        }
+        return PATH_KERNEL;
+    }
     struct lwip_sock *sock = posix_api->get_socket(fd);
 
     /* AF_UNIX case */
-- 
1.8.3.1