From ab3d77418c79a735981227cd6fc203dd9590e3a7 Mon Sep 17 00:00:00 2001
From: "Joseph C. Lehner" <joseph.c.lehner@gmail.com>
Date: Wed, 2 Oct 2024 15:18:01 +0200
Subject: [PATCH] Don't seek fd if no -S <offset> was specified

---
 tftp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tftp.c b/tftp.c
index 04509aa..57e65a8 100644
--- a/tftp.c
+++ b/tftp.c
@@ -359,7 +359,7 @@ ssize_t tftp_put(struct nmrpd_args *args)
 			file_remote = args->file_local;
 		}
 
-		if (lseek(fd, args->offset, SEEK_SET) == (off_t)-1) {
+		if (args->offset && (lseek(fd, args->offset, SEEK_SET) == (off_t)-1)) {
 			xperror("lseek");
 			goto cleanup;
 		}