[monitoring-plugins] Improving output when swap space has zero size

[Jan Wagner]

 Module: monitoring-plugins
 Branch: master
 Commit: 441913dcb700cb92b8a0448b813d60fccc436bc8
 Author: Jan Wagner <w...@cyconet.org>
   Date: Sun Oct 19 22:58:47 2014 +0200
    URL: 
https://www.monitoring-plugins.org/repositories/monitoring-plugins/commit/?id=441913d

Improving output when swap space has zero size

---

 plugins/check_swap.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/plugins/check_swap.c b/plugins/check_swap.c
index 4a573c7..63c9505 100644
--- a/plugins/check_swap.c
+++ b/plugins/check_swap.c
@@ -349,6 +349,9 @@ main (int argc, char **argv)
 
        /* if total_swap_mb == 0, let's not divide by 0 */
        if(total_swap_mb) {
+               if(total_swap_mb == 0) {
+                       status = "- Swap is either disabled, not present, or of 
zero size. ";
+               }
                percent_used = 100 * ((double) used_swap_mb) / ((double) 
total_swap_mb);
        } else {
                percent_used = 100;