diff options
Diffstat (limited to 'tools/perf/builtin-config.c')
| -rw-r--r-- | tools/perf/builtin-config.c | 68 |
1 files changed, 62 insertions, 6 deletions
diff --git a/tools/perf/builtin-config.c b/tools/perf/builtin-config.c index 88a43fe4963c..7c861b54f3a6 100644 --- a/tools/perf/builtin-config.c +++ b/tools/perf/builtin-config.c @@ -17,7 +17,7 @@ static bool use_system_config, use_user_config; static const char * const config_usage[] = { - "perf config [<file-option>] [options] [section.name ...]", + "perf config [<file-option>] [options] [section.name[=value] ...]", NULL }; @@ -33,6 +33,39 @@ static struct option config_options[] = { 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, var, value); + fprintf(fp, "%s\n", first_line); + + /* overwrite configvariables */ + perf_config_items__for_each_entry(&set->sections, section) { + fprintf(fp, "[%s]\n", section->name); + + perf_config_items__for_each_entry(§ion->items, item) { + 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; @@ -82,7 +115,7 @@ static int show_config(struct perf_config_set *set) return 0; } -static int parse_config_arg(char *arg, char **var) +static int parse_config_arg(char *arg, char **var, char **value) { const char *last_dot = strchr(arg, '.'); @@ -99,7 +132,21 @@ static int parse_config_arg(char *arg, char **var) return -1; } - *var = arg; + *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; } @@ -153,7 +200,8 @@ int cmd_config(int argc, const char **argv, const char *prefix __maybe_unused) default: if (argc) { for (i = 0; argv[i]; i++) { - char *var, *arg = strdup(argv[i]); + char *var, *value; + char *arg = strdup(argv[i]); if (!arg) { pr_err("%s: strdup failed\n", __func__); @@ -161,13 +209,21 @@ int cmd_config(int argc, const char **argv, const char *prefix __maybe_unused) break; } - if (parse_config_arg(arg, &var) < 0) { + if (parse_config_arg(arg, &var, &value) < 0) { free(arg); ret = -1; break; } - ret = show_spec_config(set, var); + if (value == NULL) + ret = show_spec_config(set, var); + else { + const char *config_filename = config_exclusive_filename; + + if (!config_exclusive_filename) + config_filename = user_config; + ret = set_config(set, config_filename, var, value); + } free(arg); } } else |