From 08a6ab66b0a8779b25f1b9a7427d790752225b48 Mon Sep 17 00:00:00 2001
From: Shirou WAKAYAMA <shirou.faw@gmail.com>
Date: Sat, 27 Aug 2016 14:02:51 +0900
Subject: [PATCH] disk: If could not get Inodes, return empty.

---
 disk/disk_unix.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/disk/disk_unix.go b/disk/disk_unix.go
index 2858008..3d81331 100644
--- a/disk/disk_unix.go
+++ b/disk/disk_unix.go
@@ -21,6 +21,10 @@ func Usage(path string) (*UsageStat, error) {
 		InodesFree:  (uint64(stat.Ffree)),
 	}
 
+	// if could not get InodesTotal, return empty
+	if ret.InodesTotal < ret.InodesFree {
+		return ret, nil
+	}
 	ret.InodesUsed = (ret.InodesTotal - ret.InodesFree)
 	ret.InodesUsedPercent = (float64(ret.InodesUsed) / float64(ret.InodesTotal)) * 100.0
 	ret.Used = (uint64(stat.Blocks) - uint64(stat.Bfree)) * uint64(bsize)