From 927e666cb9e1c48551d7237ce5a61eb7a6069aa2 Mon Sep 17 00:00:00 2001
From: Christoph Hellwig <hch@lst.de>
Date: Wed, 23 Mar 2016 20:21:07 +0100
Subject: [PATCH] nvmetcli: print a useful warning when not called as root user

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 nvmetcli | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/nvmetcli b/nvmetcli
index 0650cab..f8ef5c6 100755
--- a/nvmetcli
+++ b/nvmetcli
@@ -18,6 +18,9 @@ License for the specific language governing permissions and limitations
 under the License.
 '''
 
+from __future__ import print_function
+
+import os
 import sys
 import configshell_fb as configshell
 import nvmet.nvme as nvme
@@ -215,6 +218,10 @@ funcs = dict(save=save, restore=restore, clear=clear)
 
 
 def main():
+    if os.geteuid() != 0:
+        print("%s: must run as root." % sys.argv[0], file=sys.stderr)
+        sys.exit(-1)
+
     if len(sys.argv) > 3:
         usage()
 
-- 
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