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/*
* (C) 2010,2011 Thomas Renninger <trenn@suse.de>, Novell Inc.
*
* Licensed under the terms of the GNU GPL License version 2.
*
* Ideas taken over from the perf userspace tool (included in the Linus
* kernel git repo): subcommand builtins and param parsing.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "builtin.h"
#include "helpers/helpers.h"
#include "helpers/bitmask.h"
struct cmd_struct {
const char *cmd;
int (*main)(int, const char **);
void (*usage)(void);
int needs_root;
};
#define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
int cmd_help(int argc, const char **argv);
/* Global cpu_info object available for all binaries
* Info only retrieved from CPU 0
*
* Values will be zero/unknown on non X86 archs
*/
struct cpupower_cpu_info cpupower_cpu_info;
int run_as_root;
/* Affected cpus chosen by -c/--cpu param */
struct bitmask *cpus_chosen;
#ifdef DEBUG
int be_verbose;
#endif
static void print_help(void);
static struct cmd_struct commands[] = {
{ "frequency-info", cmd_freq_info, freq_info_help, 0 },
{ "frequency-set", cmd_freq_set, freq_set_help, 1 },
{ "idle-info", cmd_idle_info, idle_info_help, 0 },
{ "set", cmd_set, set_help, 1 },
{ "info", cmd_info, info_help, 0 },
{ "monitor", cmd_monitor, monitor_help, 0 },
{ "help", cmd_help, print_help, 0 },
/* { "bench", cmd_bench, NULL, 1 }, */
};
int cmd_help(int argc, const char **argv)
{
unsigned int i;
if (argc > 1) {
for (i = 0; i < ARRAY_SIZE(commands); i++) {
struct cmd_struct *p = commands + i;
if (strcmp(p->cmd, argv[1]))
continue;
if (p->usage) {
p->usage();
return EXIT_SUCCESS;
}
}
}
print_help();
if (argc == 1)
return EXIT_SUCCESS; /* cpupower help */
return EXIT_FAILURE;
}
static void print_help(void)
{
unsigned int i;
#ifdef DEBUG
printf(_("cpupower [ -d ][ -c cpulist ] subcommand [ARGS]\n"));
printf(_(" -d, --debug May increase output (stderr) on some subcommands\n"));
#else
printf(_("cpupower [ -c cpulist ] subcommand [ARGS]\n"));
#endif
printf(_("cpupower --version\n"));
printf(_("Supported subcommands are:\n"));
for (i = 0; i < ARRAY_SIZE(commands); i++)
printf("\t%s\n", commands[i].cmd);
printf(_("\nSome subcommands can make use of the -c cpulist option.\n"));
printf(_("Look at the general cpupower manpage how to use it\n"));
printf(_("and read up the subcommand's manpage whether it is supported.\n"));
printf(_("\nUse cpupower help subcommand for getting help for above subcommands.\n"));
}
static void print_version(void)
{
printf(PACKAGE " " VERSION "\n");
printf(_("Report errors and bugs to %s, please.\n"), PACKAGE_BUGREPORT);
}
static void handle_options(int *argc, const char ***argv)
{
int ret, x, new_argc = 0;
if (*argc < 1)
return;
for (x = 0; x < *argc && ((*argv)[x])[0] == '-'; x++) {
const char *param = (*argv)[x];
if (!strcmp(param, "-h") || !strcmp(param, "--help")) {
print_help();
exit(EXIT_SUCCESS);
} else if (!strcmp(param, "-c") || !strcmp(param, "--cpu")) {
if (*argc < 2) {
print_help();
exit(EXIT_FAILURE);
}
if (!strcmp((*argv)[x+1], "all"))
bitmask_setall(cpus_chosen);
else {
ret = bitmask_parselist(
(*argv)[x+1], cpus_chosen);
if (ret < 0) {
fprintf(stderr, _("Error parsing cpu "
"list\n"));
exit(EXIT_FAILURE);
}
}
x += 1;
/* Cut out param: cpupower -c 1 info -> cpupower info */
new_argc += 2;
continue;
} else if (!strcmp(param, "-v") ||
!strcmp(param, "--version")) {
print_version();
exit(EXIT_SUCCESS);
#ifdef DEBUG
} else if (!strcmp(param, "-d") || !strcmp(param, "--debug")) {
be_verbose = 1;
new_argc++;
continue;
#endif
} else {
fprintf(stderr, "Unknown option: %s\n", param);
print_help();
exit(EXIT_FAILURE);
}
}
*argc -= new_argc;
*argv += new_argc;
}
int main(int argc, const char *argv[])
{
const char *cmd;
unsigned int i, ret;
cpus_chosen = bitmask_alloc(sysconf(_SC_NPROCESSORS_CONF));
argc--;
argv += 1;
handle_options(&argc, &argv);
cmd = argv[0];
if (argc < 1) {
print_help();
return EXIT_FAILURE;
}
setlocale(LC_ALL, "");
textdomain(PACKAGE);
/* Turn "perf cmd --help" into "perf help cmd" */
if (argc > 1 && !strcmp(argv[1], "--help")) {
argv[1] = argv[0];
argv[0] = cmd = "help";
}
get_cpu_info(0, &cpupower_cpu_info);
run_as_root = !getuid();
for (i = 0; i < ARRAY_SIZE(commands); i++) {
struct cmd_struct *p = commands + i;
if (strcmp(p->cmd, cmd))
continue;
if (!run_as_root && p->needs_root) {
fprintf(stderr, _("Subcommand %s needs root "
"privileges\n"), cmd);
return EXIT_FAILURE;
}
ret = p->main(argc, argv);
if (cpus_chosen)
bitmask_free(cpus_chosen);
return ret;
}
print_help();
return EXIT_FAILURE;
}
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