From 635b5838e95ed85767434207e463173fd91b6040 Mon Sep 17 00:00:00 2001
From: Guillaume Chazarain <guichaz@gmail.com>
Date: Sat, 15 Oct 2011 18:39:32 +0200
Subject: [PATCH] Explain that iotop now requires root.
 https://lkml.org/lkml/2011/10/1/170
 http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=1a51410abe7d0ee4b1d112780f46df87d3621043

---
 iotop/ui.py | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)

diff --git a/iotop/ui.py b/iotop/ui.py
index ef2b3a6..e8da128 100644
--- a/iotop/ui.py
+++ b/iotop/ui.py
@@ -458,10 +458,19 @@ def run_iotop_window(win, options):
     ui.run()
 
 def run_iotop(options):
-    if options.batch:
-        return run_iotop_window(None, options)
-    else:
-        return curses.wrapper(run_iotop_window, options)
+    try:
+        if options.batch:
+            return run_iotop_window(None, options)
+        else:
+            return curses.wrapper(run_iotop_window, options)
+    except OSError, e:
+        if e.errno == errno.EPERM:
+            print >> sys.stderr, e
+            print >> sys.stderr, ('iotop requires root or the NET_ADMIN '
+                                  'capability.')
+            sys.exit(1)
+        else:
+            raise
 
 #
 # Profiling
-- 
2.11.4.GIT