From ca690f60272b5330f632cd18b58ee9af89fbc9ae Mon Sep 17 00:00:00 2001
From: Lorenz Meier <lm@inf.ethz.ch>
Date: Sun, 13 Jan 2013 09:35:56 +0100
Subject: [PATCH] Fixed #153 - when no microSD card is present, test used to
 hang, now aborts with error.

---
 apps/px4/tests/tests_file.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/apps/px4/tests/tests_file.c b/apps/px4/tests/tests_file.c
index 697410cee4..6f75b9812e 100644
--- a/apps/px4/tests/tests_file.c
+++ b/apps/px4/tests/tests_file.c
@@ -37,6 +37,7 @@
  * File write test.
  */
 
+#include <sys/stat.h>
 #include <stdio.h>
 #include <unistd.h>
 #include <fcntl.h>
@@ -51,6 +52,13 @@
 int
 test_file(int argc, char *argv[])
 {
+	/* check if microSD card is mounted */
+	struct stat buffer;
+	if (stat("/fs/microsd/", &buffer)) {
+		warnx("no microSD card mounted, aborting file test");
+		return 1;
+	}
+
 	uint8_t buf[512];
 	hrt_abstime start, end;
 	perf_counter_t wperf = perf_alloc(PC_ELAPSED, "SD writes");