tuned-adm: Fix a traceback when run without arguments

Running tuned-adm without arguments using Python 3 results in a traceback. This is because in this case parse_args does not exit with a usage message in Python 3 and the 'action' option is then undefined. So let's check for this case and print the usage message ourselves. There may be a better solution to this, but I wasn't able to come up with anything in a reasonable amount of time. Signed-off-by: Ondřej Lysoněk <[email protected]>
zacikpa · Jul 9, 2018 · 5ff48f7 · 5ff48f7
1 parent d9fc983
commit 5ff48f7
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/tuned-adm.py b/tuned-adm.py
@@ -94,6 +94,9 @@ def check_log_level(value):
 	parser_profile_mode = subparsers.add_parser("profile_mode", help="show current profile selection mode")
 	parser_profile_mode.set_defaults(action="profile_mode")
 
+	if len(sys.argv) < 2:
+		parser.print_usage(file = sys.stderr)
+		sys.exit(1)
 	args = parser.parse_args(sys.argv[1:])
 
 	options = vars(args)