From 65d6e8871c95e822ad956b2ec2bfee2a3f3b66bf Mon Sep 17 00:00:00 2001
From: Gregory Nutt <gnutt@nuttx.org>
Date: Thu, 27 Sep 2018 17:01:10 -0600
Subject: [PATCH] apps/examples/fstest:  Call statfs() and show state of file
 system on each loop.

---
 examples/fstest/Kconfig       |  3 +--
 examples/fstest/fstest_main.c | 20 ++++++++++++++++++++
 2 files changed, 21 insertions(+), 2 deletions(-)

diff --git a/examples/fstest/Kconfig b/examples/fstest/Kconfig
index be9f31a5b..28505184c 100644
--- a/examples/fstest/Kconfig
+++ b/examples/fstest/Kconfig
@@ -42,7 +42,7 @@ config EXAMPLES_FSTEST_NLOOPS
 
 config EXAMPLES_FSTEST_SPIFFS
 	bool "Enable SPIFFS testing"
-	default n
+	default y
 	depends on FS_SPIFFS
 	---help---
 		SPIFFS garbage collection and integrity checking will be performed
@@ -51,7 +51,6 @@ config EXAMPLES_FSTEST_SPIFFS
 		If this option is not selected then the SPIFFS FLASH will likely
 		become full before you finish the test.
 
-
 config EXAMPLES_FSTEST_VERBOSE
 	bool "Verbose output"
 	default n
diff --git a/examples/fstest/fstest_main.c b/examples/fstest/fstest_main.c
index 5abe902b0..d658da122 100644
--- a/examples/fstest/fstest_main.c
+++ b/examples/fstest/fstest_main.c
@@ -41,6 +41,7 @@
 
 #include <sys/mount.h>
 #include <sys/ioctl.h>
+#include <sys/statfs.h>
 
 #include <stdint.h>
 #include <stdio.h>
@@ -823,6 +824,7 @@ int main(int argc, FAR char *argv[])
 int fstest_main(int argc, char *argv[])
 #endif
 {
+  struct statfs buf;
   unsigned int i;
   int ret;
 
@@ -923,6 +925,24 @@ int fstest_main(int argc, char *argv[])
 #endif
         }
 
+      /* Show file system usage */
+
+      ret = statfs(g_mountdir, &buf);
+      if (ret < 0)
+        {
+           printf("ERROR: statfs failed: %d\n", errno);
+        }
+      else
+        {
+           printf("File System:\n");
+           printf("  Block Size:      &lu\n", (unsigned long)buf.f_bsize);
+           printf("  No. Blocks:      %lu\n", (unsigned long)buf.f_blocks);
+           printf("  Free Blocks:     %ld\n", (long)buf.f_bfree);
+           printf("  Avail. Blocks:   %ld\n", (long)buf.f_bavail);
+           printf("  No. File Nodes:  %ld\n", (long)buf.f_files);
+           printf("  Free File Nodes: %ld\n", (long)buf.f_ffree);
+        }
+
       /* Show memory usage */
 
       fstest_loopmemusage();