1/*
 2 * builtin-config.c
 3 *
 4 * Copyright (C) 2015, Taeung Song <treeze.taeung@gmail.com>
 5 *
 6 */
 7#include "builtin.h"
 8
 9#include "perf.h"
10
11#include "util/cache.h"
12#include <subcmd/parse-options.h>
13#include "util/util.h"
14#include "util/debug.h"
15
16static bool use_system_config, use_user_config;
17
18static const char * const config_usage[] = {
19	"perf config [<file-option>] [options]",
20	NULL
21};
22
23enum actions {
24	ACTION_LIST = 1
25} actions;
26
27static struct option config_options[] = {
28	OPT_SET_UINT('l', "list", &actions,
29		     "show current config variables", ACTION_LIST),
30	OPT_BOOLEAN(0, "system", &use_system_config, "use system config file"),
31	OPT_BOOLEAN(0, "user", &use_user_config, "use user config file"),
32	OPT_END()
33};
34
35static int show_config(const char *key, const char *value,
36		       void *cb __maybe_unused)
37{
38	if (value)
39		printf("%s=%s\n", key, value);
40	else
41		printf("%s\n", key);
42
43	return 0;
44}
45
46int cmd_config(int argc, const char **argv, const char *prefix __maybe_unused)
47{
48	int ret = 0;
49	char *user_config = mkpath("%s/.perfconfig", getenv("HOME"));
50
51	argc = parse_options(argc, argv, config_options, config_usage,
52			     PARSE_OPT_STOP_AT_NON_OPTION);
53
54	if (use_system_config && use_user_config) {
55		pr_err("Error: only one config file at a time\n");
56		parse_options_usage(config_usage, config_options, "user", 0);
57		parse_options_usage(NULL, config_options, "system", 0);
58		return -1;
59	}
60
61	if (use_system_config)
62		config_exclusive_filename = perf_etc_perfconfig();
63	else if (use_user_config)
64		config_exclusive_filename = user_config;
65
66	switch (actions) {
67	case ACTION_LIST:
68		if (argc) {
69			pr_err("Error: takes no arguments\n");
70			parse_options_usage(config_usage, config_options, "l", 1);
71		} else {
72			ret = perf_config(show_config, NULL);
73			if (ret < 0) {
74				const char * config_filename = config_exclusive_filename;
75				if (!config_exclusive_filename)
76					config_filename = user_config;
77				pr_err("Nothing configured, "
78				       "please check your %s \n", config_filename);
79			}
80		}
81		break;
82	default:
83		usage_with_options(config_usage, config_options);
84	}
85
86	return ret;
87}