From bd4ebe1a1df0e0e9f943796fdf554967a96f38eb Mon Sep 17 00:00:00 2001
From: John Safranek <john@wolfssl.com>
Date: Wed, 8 Jul 2020 15:23:26 -0700
Subject: [PATCH] Add check of return value of chdir().

---
 examples/echoserver/echoserver.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/examples/echoserver/echoserver.c b/examples/echoserver/echoserver.c
index 2a91c0f..1503558 100644
--- a/examples/echoserver/echoserver.c
+++ b/examples/echoserver/echoserver.c
@@ -459,7 +459,10 @@ static int shell_worker(thread_ctx_t* threadCtx)
 
         setenv("HOME", p_passwd->pw_dir, 1);
         setenv("LOGNAME", p_passwd->pw_name, 1);
-        chdir(p_passwd->pw_dir);
+        rc = chdir(p_passwd->pw_dir);
+        if (rc != 0) {
+            return WS_FATAL_ERROR;
+        }
 
         execv("/bin/sh", (char **)args);
     }