Commit | Line | Data |
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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
30862f2c TS |
2 | /* |
3 | * builtin-config.c | |
4 | * | |
5 | * Copyright (C) 2015, Taeung Song <treeze.taeung@gmail.com> | |
6 | * | |
7 | */ | |
8 | #include "builtin.h" | |
9 | ||
10 | #include "perf.h" | |
11 | ||
12 | #include "util/cache.h" | |
4b6ab94e | 13 | #include <subcmd/parse-options.h> |
30862f2c TS |
14 | #include "util/util.h" |
15 | #include "util/debug.h" | |
860b8d4b | 16 | #include "util/config.h" |
8e99b6d4 | 17 | #include <linux/string.h> |
30862f2c | 18 | |
c7ac2417 TS |
19 | static bool use_system_config, use_user_config; |
20 | ||
30862f2c | 21 | static const char * const config_usage[] = { |
c6fc018a | 22 | "perf config [<file-option>] [options] [section.name[=value] ...]", |
30862f2c TS |
23 | NULL |
24 | }; | |
25 | ||
26 | enum actions { | |
27 | ACTION_LIST = 1 | |
28 | } actions; | |
29 | ||
30 | static struct option config_options[] = { | |
31 | OPT_SET_UINT('l', "list", &actions, | |
32 | "show current config variables", ACTION_LIST), | |
c7ac2417 TS |
33 | OPT_BOOLEAN(0, "system", &use_system_config, "use system config file"), |
34 | OPT_BOOLEAN(0, "user", &use_user_config, "use user config file"), | |
30862f2c TS |
35 | OPT_END() |
36 | }; | |
37 | ||
5c261555 | 38 | static int set_config(struct perf_config_set *set, const char *file_name) |
c6fc018a TS |
39 | { |
40 | struct perf_config_section *section = NULL; | |
41 | struct perf_config_item *item = NULL; | |
42 | const char *first_line = "# this file is auto-generated."; | |
43 | FILE *fp; | |
44 | ||
45 | if (set == NULL) | |
46 | return -1; | |
47 | ||
48 | fp = fopen(file_name, "w"); | |
49 | if (!fp) | |
50 | return -1; | |
51 | ||
c6fc018a TS |
52 | fprintf(fp, "%s\n", first_line); |
53 | ||
54 | /* overwrite configvariables */ | |
55 | perf_config_items__for_each_entry(&set->sections, section) { | |
08d090cf TS |
56 | if (!use_system_config && section->from_system_config) |
57 | continue; | |
c6fc018a TS |
58 | fprintf(fp, "[%s]\n", section->name); |
59 | ||
60 | perf_config_items__for_each_entry(§ion->items, item) { | |
cba225d6 | 61 | if (!use_system_config && item->from_system_config) |
08d090cf | 62 | continue; |
c6fc018a TS |
63 | if (item->value) |
64 | fprintf(fp, "\t%s = %s\n", | |
65 | item->name, item->value); | |
66 | } | |
67 | } | |
68 | fclose(fp); | |
69 | ||
70 | return 0; | |
71 | } | |
72 | ||
90923608 TS |
73 | static int show_spec_config(struct perf_config_set *set, const char *var) |
74 | { | |
75 | struct perf_config_section *section; | |
76 | struct perf_config_item *item; | |
77 | ||
78 | if (set == NULL) | |
79 | return -1; | |
80 | ||
81 | perf_config_items__for_each_entry(&set->sections, section) { | |
8e99b6d4 | 82 | if (!strstarts(var, section->name)) |
90923608 TS |
83 | continue; |
84 | ||
85 | perf_config_items__for_each_entry(§ion->items, item) { | |
86 | const char *name = var + strlen(section->name) + 1; | |
87 | ||
88 | if (strcmp(name, item->name) == 0) { | |
89 | char *value = item->value; | |
90 | ||
91 | if (value) { | |
92 | printf("%s=%s\n", var, value); | |
93 | return 0; | |
94 | } | |
95 | } | |
96 | ||
97 | } | |
98 | } | |
99 | ||
100 | return 0; | |
101 | } | |
102 | ||
860b8d4b | 103 | static int show_config(struct perf_config_set *set) |
30862f2c | 104 | { |
860b8d4b TS |
105 | struct perf_config_section *section; |
106 | struct perf_config_item *item; | |
860b8d4b TS |
107 | |
108 | if (set == NULL) | |
109 | return -1; | |
110 | ||
4a35b349 TS |
111 | perf_config_set__for_each_entry(set, section, item) { |
112 | char *value = item->value; | |
860b8d4b | 113 | |
4a35b349 TS |
114 | if (value) |
115 | printf("%s.%s=%s\n", section->name, | |
116 | item->name, value); | |
860b8d4b | 117 | } |
30862f2c TS |
118 | |
119 | return 0; | |
120 | } | |
121 | ||
c6fc018a | 122 | static int parse_config_arg(char *arg, char **var, char **value) |
36662794 TS |
123 | { |
124 | const char *last_dot = strchr(arg, '.'); | |
125 | ||
126 | /* | |
127 | * Since "var" actually contains the section name and the real | |
128 | * config variable name separated by a dot, we have to know where the dot is. | |
129 | */ | |
130 | if (last_dot == NULL || last_dot == arg) { | |
131 | pr_err("The config variable does not contain a section name: %s\n", arg); | |
132 | return -1; | |
133 | } | |
134 | if (!last_dot[1]) { | |
135 | pr_err("The config variable does not contain a variable name: %s\n", arg); | |
136 | return -1; | |
137 | } | |
138 | ||
c6fc018a TS |
139 | *value = strchr(arg, '='); |
140 | if (*value == NULL) | |
141 | *var = arg; | |
142 | else if (!strcmp(*value, "=")) { | |
143 | pr_err("The config variable does not contain a value: %s\n", arg); | |
144 | return -1; | |
145 | } else { | |
146 | *value = *value + 1; /* excluding a first character '=' */ | |
147 | *var = strsep(&arg, "="); | |
148 | if (*var[0] == '\0') { | |
149 | pr_err("invalid config variable: %s\n", arg); | |
150 | return -1; | |
151 | } | |
152 | } | |
153 | ||
36662794 TS |
154 | return 0; |
155 | } | |
156 | ||
b0ad8ea6 | 157 | int cmd_config(int argc, const char **argv) |
30862f2c | 158 | { |
dfe1c6d7 | 159 | int i, ret = -1; |
860b8d4b | 160 | struct perf_config_set *set; |
c7ac2417 | 161 | char *user_config = mkpath("%s/.perfconfig", getenv("HOME")); |
4341ec6b | 162 | const char *config_filename; |
5c261555 | 163 | bool changed = false; |
30862f2c TS |
164 | |
165 | argc = parse_options(argc, argv, config_options, config_usage, | |
166 | PARSE_OPT_STOP_AT_NON_OPTION); | |
167 | ||
c7ac2417 TS |
168 | if (use_system_config && use_user_config) { |
169 | pr_err("Error: only one config file at a time\n"); | |
170 | parse_options_usage(config_usage, config_options, "user", 0); | |
171 | parse_options_usage(NULL, config_options, "system", 0); | |
172 | return -1; | |
173 | } | |
174 | ||
175 | if (use_system_config) | |
176 | config_exclusive_filename = perf_etc_perfconfig(); | |
177 | else if (use_user_config) | |
178 | config_exclusive_filename = user_config; | |
179 | ||
4341ec6b TS |
180 | if (!config_exclusive_filename) |
181 | config_filename = user_config; | |
182 | else | |
183 | config_filename = config_exclusive_filename; | |
184 | ||
8a0a9c7e TS |
185 | /* |
186 | * At only 'config' sub-command, individually use the config set | |
187 | * because of reinitializing with options config file location. | |
188 | */ | |
860b8d4b | 189 | set = perf_config_set__new(); |
dfe1c6d7 | 190 | if (!set) |
860b8d4b | 191 | goto out_err; |
860b8d4b | 192 | |
30862f2c TS |
193 | switch (actions) { |
194 | case ACTION_LIST: | |
195 | if (argc) { | |
196 | pr_err("Error: takes no arguments\n"); | |
197 | parse_options_usage(config_usage, config_options, "l", 1); | |
198 | } else { | |
41e0d040 | 199 | do_action_list: |
dfe1c6d7 | 200 | if (show_config(set) < 0) { |
30862f2c | 201 | pr_err("Nothing configured, " |
c7ac2417 | 202 | "please check your %s \n", config_filename); |
dfe1c6d7 TS |
203 | goto out_err; |
204 | } | |
30862f2c TS |
205 | } |
206 | break; | |
207 | default: | |
41e0d040 ACM |
208 | if (!argc) |
209 | goto do_action_list; | |
36662794 | 210 | |
8c1cedb4 TS |
211 | for (i = 0; argv[i]; i++) { |
212 | char *var, *value; | |
213 | char *arg = strdup(argv[i]); | |
36662794 | 214 | |
8c1cedb4 TS |
215 | if (!arg) { |
216 | pr_err("%s: strdup failed\n", __func__); | |
dfe1c6d7 | 217 | goto out_err; |
8c1cedb4 TS |
218 | } |
219 | ||
220 | if (parse_config_arg(arg, &var, &value) < 0) { | |
36662794 | 221 | free(arg); |
dfe1c6d7 | 222 | goto out_err; |
36662794 | 223 | } |
8c1cedb4 | 224 | |
4f1fd742 | 225 | if (value == NULL) { |
dfe1c6d7 | 226 | if (show_spec_config(set, var) < 0) { |
4f1fd742 TS |
227 | pr_err("%s is not configured: %s\n", |
228 | var, config_filename); | |
229 | free(arg); | |
dfe1c6d7 | 230 | goto out_err; |
4f1fd742 TS |
231 | } |
232 | } else { | |
5c261555 TS |
233 | if (perf_config_set__collect(set, config_filename, |
234 | var, value) < 0) { | |
235 | pr_err("Failed to add '%s=%s'\n", | |
236 | var, value); | |
4f1fd742 | 237 | free(arg); |
dfe1c6d7 | 238 | goto out_err; |
4f1fd742 | 239 | } |
5c261555 | 240 | changed = true; |
4f1fd742 | 241 | } |
8c1cedb4 TS |
242 | free(arg); |
243 | } | |
5c261555 TS |
244 | |
245 | if (!changed) | |
246 | break; | |
247 | ||
248 | if (set_config(set, config_filename) < 0) { | |
249 | pr_err("Failed to set the configs on %s\n", | |
250 | config_filename); | |
251 | goto out_err; | |
252 | } | |
30862f2c TS |
253 | } |
254 | ||
dfe1c6d7 | 255 | ret = 0; |
860b8d4b | 256 | out_err: |
dfe1c6d7 | 257 | perf_config_set__delete(set); |
30862f2c TS |
258 | return ret; |
259 | } |