From d847d66e9923386c309e293d57167f68dbae0523 Mon Sep 17 00:00:00 2001
From: Isaac Connor <iconnor@pseudo.connortechnology.com>
Date: Tue, 26 Apr 2016 14:40:40 -0400
Subject: [PATCH] handle disk_free_space error

---
 web/includes/functions.php | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/web/includes/functions.php b/web/includes/functions.php
index ed9850ca3..15db5511a 100644
--- a/web/includes/functions.php
+++ b/web/includes/functions.php
@@ -1676,7 +1676,12 @@ function getDiskPercent()
         Error("disk_total_space returned false for " . ZM_DIR_EVENTS );
         return 0;
     }
-    $space = round(($total - disk_free_space(ZM_DIR_EVENTS)) / $total * 100);
+    $free = disk_free_space(ZM_DIR_EVENTS);
+    if ( ! $free ) {
+        Error("disk_free_space returned false for " . ZM_DIR_EVENTS );
+        return 0;
+    }
+    $space = round(($total - $free) / $total * 100);
     return( $space );
 }