lxc_config: Add -h and --help flags handler

As the other tools already handle, show usage message when -h or --help are used. Signed-off-by: Marcos Paulo de Souza <marcos.souza.org@gmail.com>

lxc_config: Add -h and --help flags handler
f63ac53e · Marcos Paulo de Souza · c326c196 · f63ac53e
Commit f63ac53e authored Dec 30, 2017 by Marcos Paulo de Souza
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lxc_config.c src/lxc/tools/lxc_config.c +2 -1

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--- a/src/lxc/tools/lxc_config.c
+++ b/src/lxc/tools/lxc_config.c
@@ -64,7 +64,8 @@ int main(int argc, char *argv[])
 	setenv("LXC_UPDATE_CONFIG_FORMAT", "1", 0);
-	if (argc < 2)
+	if (argc < 2 || strcmp(argv[1], "-h") == 0 ||
+			strcmp(argv[1], "--help") == 0)
 		usage(argv[0]);
 	if (strcmp(argv[1], "-l") == 0)
 		list_config_items();