From 1caf06bd7707c4a3b6f576e1bd2d2f20d28484b6 Mon Sep 17 00:00:00 2001
From: YAMAMOTO Takashi <yamamoto@midokura.com>
Date: Fri, 22 Nov 2024 12:33:05 +0900
Subject: [PATCH] system/dd: print help and abort on unknown options

---
 system/dd/dd_main.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/system/dd/dd_main.c b/system/dd/dd_main.c
index dba8837bc..b9526f887 100644
--- a/system/dd/dd_main.c
+++ b/system/dd/dd_main.c
@@ -228,6 +228,11 @@ int main(int argc, FAR char **argv)
         {
           dd.seek = atoi(&argv[i][5]);
         }
+      else
+        {
+          print_usage();
+          goto errout_with_paths;
+        }
     }
 
   if (infile == NULL || outfile == NULL)