From 3147bf2e34f19e06ae21da768cc318bcc185f530 Mon Sep 17 00:00:00 2001
From: Robert Roth <robert.roth.off@gmail.com>
Date: Mon, 9 Dec 2013 01:57:01 +0200
Subject: [PATCH] Log error on statvfs failure.

When doing stat on a FS and failing, log the error message based
on the errno set to help the user find the reason.
https://bugzilla.gnome.org/show_bug.cgi?id=685172
---
 sysdeps/linux/fsusage.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sysdeps/linux/fsusage.c b/sysdeps/linux/fsusage.c
index b1867672..a7fd16c4 100644
--- a/sysdeps/linux/fsusage.c
+++ b/sysdeps/linux/fsusage.c
@@ -15,6 +15,7 @@
 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>
+#include <errno.h>
 #include <mntent.h>
 
 
@@ -197,7 +198,7 @@ glibtop_get_fsusage_s(glibtop *server, glibtop_fsusage *buf, const char *path)
   memset(buf, 0, sizeof(glibtop_fsusage));
 
   if (statvfs(path, &fsd) < 0) {
-    glibtop_warn_r(server, "statvfs '%s' failed", path);
+    glibtop_warn_r(server, "statvfs '%s' failed: %s", path, strerror (errno));
     return;
   }