mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-24 17:59:32 +00:00
![Arnaldo Carvalho de Melo](/assets/img/avatar_default.png)
Check that it is not needed and remove, fixing up some fallout for places where it was only serving to get something else. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lkml.kernel.org/n/tip-9h6dg6lsqe2usyqjh5rrues4@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
258 lines
5.7 KiB
C
258 lines
5.7 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* builtin-config.c
|
|
*
|
|
* Copyright (C) 2015, Taeung Song <treeze.taeung@gmail.com>
|
|
*
|
|
*/
|
|
#include "builtin.h"
|
|
|
|
#include "util/cache.h"
|
|
#include <subcmd/parse-options.h>
|
|
#include "util/debug.h"
|
|
#include "util/config.h"
|
|
#include <linux/string.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.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)
|
|
{
|
|
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;
|
|
|
|
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 && item->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;
|
|
bool changed = false;
|
|
|
|
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 {
|
|
do_action_list:
|
|
if (show_config(set) < 0) {
|
|
pr_err("Nothing configured, "
|
|
"please check your %s \n", config_filename);
|
|
goto out_err;
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
if (!argc)
|
|
goto do_action_list;
|
|
|
|
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 (perf_config_set__collect(set, config_filename,
|
|
var, value) < 0) {
|
|
pr_err("Failed to add '%s=%s'\n",
|
|
var, value);
|
|
free(arg);
|
|
goto out_err;
|
|
}
|
|
changed = true;
|
|
}
|
|
free(arg);
|
|
}
|
|
|
|
if (!changed)
|
|
break;
|
|
|
|
if (set_config(set, config_filename) < 0) {
|
|
pr_err("Failed to set the configs on %s\n",
|
|
config_filename);
|
|
goto out_err;
|
|
}
|
|
}
|
|
|
|
ret = 0;
|
|
out_err:
|
|
perf_config_set__delete(set);
|
|
return ret;
|
|
}
|