From 88d45d641c859eb1714d5e7e917dab0ed354fc9f Mon Sep 17 00:00:00 2001
From: iceman1001 <iceman@iuse.se>
Date: Tue, 2 Aug 2022 22:49:25 +0200
Subject: [PATCH] Do not create empty dump files

---
 client/src/fileutils.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/client/src/fileutils.c b/client/src/fileutils.c
index 8e68ed03f..41831c7cf 100644
--- a/client/src/fileutils.c
+++ b/client/src/fileutils.c
@@ -1952,6 +1952,11 @@ int pm3_load_dump(const char *fn, void **pdump, size_t *dumplen, size_t maxdumpl
 }
 
 int pm3_save_dump(const char *fn, uint8_t *d, size_t n, JSONFileType jsft, size_t blocksize) {
+    if (n == 0) {
+        PrintAndLogEx(INFO, "No data to save. Skipping...");
+        return PM3_EINVARG;
+    }
+
     saveFile(fn, ".bin", d, n);
     saveFileEML(fn, d, n, blocksize);
     saveFileJSON(fn, jsft, d, n, NULL);