From a4678ce54e37ff4cbd72a75c37c8c8d8a675c38d Mon Sep 17 00:00:00 2001
From: Peter Andersson <pelleplutt1976@gmail.com>
Date: Tue, 3 Nov 2015 18:30:12 +0100
Subject: [PATCH] Zero-size file cannot be seek #57

Thanks @lishen2
---
 src/spiffs_hydrogen.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/spiffs_hydrogen.c b/src/spiffs_hydrogen.c
index 6c31da2..dd9fced 100644
--- a/src/spiffs_hydrogen.c
+++ b/src/spiffs_hydrogen.c
@@ -500,7 +500,7 @@ s32_t SPIFFS_lseek(spiffs *fs, spiffs_file fh, s32_t offs, int whence) {
     break;
   }
 
-  if (offs > (s32_t)fd->size) {
+  if ((offs > (s32_t)fd->size) && (SPIFFS_UNDEFINED_LEN != fd->size)) {
     res = SPIFFS_ERR_END_OF_OBJECT;
   }
   SPIFFS_API_CHECK_RES_UNLOCK(fs, res);