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258 lines
5.7 KiB
258 lines
5.7 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* builtin-config.c |
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* |
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* Copyright (C) 2015, Taeung Song <[email protected]> |
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* |
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*/ |
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#include "builtin.h" |
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#include "util/cache.h" |
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#include <subcmd/parse-options.h> |
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#include "util/debug.h" |
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#include "util/config.h" |
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#include <linux/string.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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static bool use_system_config, use_user_config; |
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static const char * const config_usage[] = { |
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"perf config [<file-option>] [options] [section.name[=value] ...]", |
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NULL |
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}; |
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enum actions { |
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ACTION_LIST = 1 |
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} actions; |
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static struct option config_options[] = { |
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OPT_SET_UINT('l', "list", &actions, |
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"show current config variables", ACTION_LIST), |
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OPT_BOOLEAN(0, "system", &use_system_config, "use system config file"), |
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OPT_BOOLEAN(0, "user", &use_user_config, "use user config file"), |
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OPT_END() |
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}; |
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static int set_config(struct perf_config_set *set, const char *file_name) |
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{ |
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struct perf_config_section *section = NULL; |
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struct perf_config_item *item = NULL; |
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const char *first_line = "# this file is auto-generated."; |
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FILE *fp; |
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if (set == NULL) |
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return -1; |
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fp = fopen(file_name, "w"); |
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if (!fp) |
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return -1; |
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fprintf(fp, "%s\n", first_line); |
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/* overwrite configvariables */ |
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perf_config_items__for_each_entry(&set->sections, section) { |
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if (!use_system_config && section->from_system_config) |
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continue; |
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fprintf(fp, "[%s]\n", section->name); |
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perf_config_items__for_each_entry(§ion->items, item) { |
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if (!use_system_config && item->from_system_config) |
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continue; |
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if (item->value) |
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fprintf(fp, "\t%s = %s\n", |
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item->name, item->value); |
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} |
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} |
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fclose(fp); |
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return 0; |
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} |
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static int show_spec_config(struct perf_config_set *set, const char *var) |
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{ |
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struct perf_config_section *section; |
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struct perf_config_item *item; |
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if (set == NULL) |
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return -1; |
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perf_config_items__for_each_entry(&set->sections, section) { |
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if (!strstarts(var, section->name)) |
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continue; |
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perf_config_items__for_each_entry(§ion->items, item) { |
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const char *name = var + strlen(section->name) + 1; |
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if (strcmp(name, item->name) == 0) { |
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char *value = item->value; |
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if (value) { |
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printf("%s=%s\n", var, value); |
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return 0; |
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} |
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} |
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} |
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} |
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return 0; |
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} |
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static int show_config(struct perf_config_set *set) |
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{ |
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struct perf_config_section *section; |
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struct perf_config_item *item; |
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if (set == NULL) |
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return -1; |
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perf_config_set__for_each_entry(set, section, item) { |
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char *value = item->value; |
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if (value) |
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printf("%s.%s=%s\n", section->name, |
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item->name, value); |
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} |
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return 0; |
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} |
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static int parse_config_arg(char *arg, char **var, char **value) |
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{ |
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const char *last_dot = strchr(arg, '.'); |
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/* |
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* Since "var" actually contains the section name and the real |
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* config variable name separated by a dot, we have to know where the dot is. |
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*/ |
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if (last_dot == NULL || last_dot == arg) { |
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pr_err("The config variable does not contain a section name: %s\n", arg); |
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return -1; |
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} |
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if (!last_dot[1]) { |
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pr_err("The config variable does not contain a variable name: %s\n", arg); |
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return -1; |
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} |
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*value = strchr(arg, '='); |
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if (*value == NULL) |
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*var = arg; |
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else if (!strcmp(*value, "=")) { |
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pr_err("The config variable does not contain a value: %s\n", arg); |
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return -1; |
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} else { |
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*value = *value + 1; /* excluding a first character '=' */ |
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*var = strsep(&arg, "="); |
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if (*var[0] == '\0') { |
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pr_err("invalid config variable: %s\n", arg); |
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return -1; |
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} |
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} |
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return 0; |
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} |
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int cmd_config(int argc, const char **argv) |
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{ |
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int i, ret = -1; |
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struct perf_config_set *set; |
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char *user_config = mkpath("%s/.perfconfig", getenv("HOME")); |
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const char *config_filename; |
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bool changed = false; |
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argc = parse_options(argc, argv, config_options, config_usage, |
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PARSE_OPT_STOP_AT_NON_OPTION); |
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if (use_system_config && use_user_config) { |
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pr_err("Error: only one config file at a time\n"); |
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parse_options_usage(config_usage, config_options, "user", 0); |
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parse_options_usage(NULL, config_options, "system", 0); |
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return -1; |
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} |
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if (use_system_config) |
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config_exclusive_filename = perf_etc_perfconfig(); |
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else if (use_user_config) |
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config_exclusive_filename = user_config; |
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if (!config_exclusive_filename) |
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config_filename = user_config; |
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else |
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config_filename = config_exclusive_filename; |
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/* |
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* At only 'config' sub-command, individually use the config set |
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* because of reinitializing with options config file location. |
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*/ |
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set = perf_config_set__new(); |
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if (!set) |
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goto out_err; |
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switch (actions) { |
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case ACTION_LIST: |
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if (argc) { |
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pr_err("Error: takes no arguments\n"); |
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parse_options_usage(config_usage, config_options, "l", 1); |
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} else { |
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do_action_list: |
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if (show_config(set) < 0) { |
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pr_err("Nothing configured, " |
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"please check your %s \n", config_filename); |
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goto out_err; |
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} |
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} |
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break; |
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default: |
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if (!argc) |
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goto do_action_list; |
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for (i = 0; argv[i]; i++) { |
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char *var, *value; |
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char *arg = strdup(argv[i]); |
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if (!arg) { |
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pr_err("%s: strdup failed\n", __func__); |
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goto out_err; |
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} |
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if (parse_config_arg(arg, &var, &value) < 0) { |
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free(arg); |
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goto out_err; |
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} |
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if (value == NULL) { |
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if (show_spec_config(set, var) < 0) { |
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pr_err("%s is not configured: %s\n", |
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var, config_filename); |
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free(arg); |
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goto out_err; |
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} |
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} else { |
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if (perf_config_set__collect(set, config_filename, |
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var, value) < 0) { |
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pr_err("Failed to add '%s=%s'\n", |
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var, value); |
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free(arg); |
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goto out_err; |
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} |
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changed = true; |
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} |
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free(arg); |
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} |
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if (!changed) |
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break; |
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if (set_config(set, config_filename) < 0) { |
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pr_err("Failed to set the configs on %s\n", |
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config_filename); |
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goto out_err; |
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} |
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} |
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ret = 0; |
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out_err: |
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perf_config_set__delete(set); |
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return ret; |
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}
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