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