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 16 static bool use_system_config, use_user_config; 17 18 static const char * const config_usage[] = { 19 "perf config [<file-option>] [options]", 20 NULL 21 }; 22 23 enum actions { 24 ACTION_LIST = 1 25 } actions; 26 27 static 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 35 static 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 46 int 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 } 88