int main(int argc, char *argv[])
{
static const char *const devfiles[] = {
"/dev/snd/controlC",
"/dev/snd/pcmC",
"/dev/snd/midiC",
"/dev/snd/hwC",
NULL
};
char *cfgfile = SYS_ASOUNDRC;
char *initfile = DATADIR "/init/00main";
char *pidfile = SYS_PIDFILE;
char *cardname, ncardname[16];
char *cmd;
const char *const *tmp;
int removestate = 0;
int init_fallback = 1; /* new default behavior */
int period = 5*60;
int background = 0;
int daemoncmd = 0;
int use_nice = NO_NICE;
int sched_idle = 0;
struct arg *a;
struct option *o;
int i, j, k, res;
struct option *long_option;
char *short_option;
long_option = calloc(ARRAY_SIZE(args), sizeof(struct option));
if (long_option == NULL)
exit(EXIT_FAILURE);
short_option = malloc(128);
if (short_option == NULL) {
free(long_option);
exit(EXIT_FAILURE);
}
for (i = j = k = 0; i < ARRAY_SIZE(args); i++) {
a = &args[i];
if ((a->sarg & 0xff) == 0)
continue;
o = &long_option[j];
o->name = a->larg;
o->has_arg = (a->sarg & (ENVARG|FILEARG|INTARG)) != 0;
o->flag = NULL;
o->val = a->sarg & 0xff;
j++;
short_option[k++] = o->val;
if (o->has_arg)
short_option[k++] = ':';
}
short_option[k] = '\0';
command = argv[0];
while (1) {
int c;
if ((c = getopt_long(argc, argv, short_option, long_option,
NULL)) < 0)
break;
switch (c) {
case 'h':
help();
res = EXIT_SUCCESS;
goto out;
case 'f':
cfgfile = optarg;
break;
case 'l':
do_lock = 1;
break;
case 'F':
force_restore = 1;
break;
case 'g':
ignore_nocards = 1;
break;
case 'E':
if (putenv(optarg)) {
fprintf(stderr, "environment string '%s' is wrong\n", optarg);
res = EXIT_FAILURE;
goto out;
}
break;
case 'i':
initfile = optarg;
break;
case 'I':
init_fallback = 0;
break;
case 'r':
statefile = optarg;
break;
case 'R':
removestate = 1;
break;
case 'P':
force_restore = 0;
break;
case 'p':
period = atoi(optarg);
if (period < 10)
period = 5*60;
else if (period > 24*60*60)
period = 24*60*60;
break;
case 'e':
pidfile = optarg;
break;
case 'b':
background = 1;
break;
case 's':
use_syslog = 1;
break;
case 'n':
use_nice = atoi(optarg);
if (use_nice < -20)
use_nice = -20;
else if (use_nice > 19)
use_nice = 19;
break;
case 'c':
sched_idle = 1;
break;
case 'd':
debugflag = 1;
break;
case 'v':
printf("alsactl version " SND_UTIL_VERSION_STR "\n");
res = EXIT_SUCCESS;
goto out;
case '?': // error msg already printed
help();
res = EXIT_FAILURE;
goto out;
default: // should never happen
fprintf(stderr,
"Invalid option '%c' (%d) not handled??\n", c, c);
}
}
free(short_option);
short_option = NULL;
free(long_option);
long_option = NULL;
if (argc - optind <= 0) {
fprintf(stderr, "alsactl: Specify command...\n");
res = 0;
goto out;
}
cardname = argc - optind > 1 ? argv[optind + 1] : NULL;
for (tmp = devfiles; cardname != NULL && *tmp != NULL; tmp++) {
int len = strlen(*tmp);
if (!strncmp(cardname, *tmp, len)) {
long l = strtol(cardname + len, NULL, 0);
sprintf(ncardname, "%li", l);
cardname = ncardname;
break;
}
}
/* the global system file should be always locked */
if (strcmp(cfgfile, SYS_ASOUNDRC) == 0)
do_lock = 1;
/* when running in background, use syslog for reports */
if (background) {
use_syslog = 1;
daemon(0, 0);
}
cmd = argv[optind];
daemoncmd = strcmp(cmd, "daemon") == 0 || strcmp(cmd, "rdaemon") == 0;
if (use_syslog) {
openlog("alsactl", LOG_CONS|LOG_PID, LOG_DAEMON);
if (daemoncmd)
syslog(LOG_INFO, "alsactl " SND_UTIL_VERSION_STR " daemon started");
}
if (!strcmp(cmd, "init")) {
res = init(initfile, cardname);
snd_config_update_free_global();
} else if (!strcmp(cmd, "store")) {
res = save_state(cfgfile, cardname);
} else if (!strcmp(cmd, "restore") ||
!strcmp(cmd, "rdaemon") ||
!strcmp(cmd, "nrestore")) {
if (removestate)
remove(statefile);
res = load_state(cfgfile, initfile, cardname, init_fallback);
if (!strcmp(cmd, "rdaemon")) {
do_nice(use_nice, sched_idle);
res = state_daemon(cfgfile, cardname, period, pidfile);
}
if (!strcmp(cmd, "nrestore"))
res = state_daemon_kill(pidfile, "rescan");
} else if (!strcmp(cmd, "daemon")) {
do_nice(use_nice, sched_idle);
res = state_daemon(cfgfile, cardname, period, pidfile);
} else if (!strcmp(cmd, "kill")) {
res = state_daemon_kill(pidfile, cardname);
} else {
fprintf(stderr, "alsactl: Unknown command '%s'...\n", cmd);
res = -ENODEV;
}
snd_config_update_free_global();
if (use_syslog) {
if (daemoncmd)
syslog(LOG_INFO, "alsactl daemon stopped");
closelog();
}
return res < 0 ? -res : 0;
out:
free(short_option);
free(long_option);
return res;
}
/*===========================================================================*
* main *
*===========================================================================*/
PUBLIC int main(void)
{
/* Main routine of the scheduler. */
message m_in; /* the incoming message itself is kept here. */
int call_nr; /* system call number */
int who_e; /* caller's endpoint */
int result; /* result to system call */
int rv;
/* SEF local startup. */
sef_local_startup();
/* Initialize scheduling timers, used for running balance_queues */
init_scheduling();
/* my Hello code*/
printf("\n%s\n", " =========================================================");
printf("%s\n", " Hello, Minix is now using a lottery scheduler.");
printf("%s\n\n", " =========================================================");
/* This is SCHED's main loop - get work and do it, forever and forever. */
while (TRUE) {
int ipc_status;
/* Wait for the next message and extract useful information from it. */
if (sef_receive_status(ANY, &m_in, &ipc_status) != OK)
panic("SCHED sef_receive error");
who_e = m_in.m_source; /* who sent the message */
call_nr = m_in.m_type; /* system call number */
/* Check for system notifications first. Special cases. */
if (is_ipc_notify(ipc_status)) {
switch(who_e) {
case CLOCK:
expire_timers(m_in.NOTIFY_TIMESTAMP);
continue; /* don't reply */
default :
result = ENOSYS;
}
goto sendreply;
}
switch(call_nr) {
case SCHEDULING_INHERIT:
case SCHEDULING_START:
result = do_start_scheduling(&m_in);
break;
case SCHEDULING_STOP:
result = do_stop_scheduling(&m_in);
break;
case SCHEDULING_SET_NICE:
result = do_nice(&m_in);
break;
case SCHEDULING_NO_QUANTUM:
/* This message was sent from the kernel, don't reply */
if (IPC_STATUS_FLAGS_TEST(ipc_status,
IPC_FLG_MSG_FROM_KERNEL)) {
if ((rv = do_noquantum(&m_in)) != (OK)) {
printf("SCHED: Warning, do_noquantum "
"failed with %d\n", rv);
}
continue; /* Don't reply */
}
else {
printf("SCHED: process %d faked "
"SCHEDULING_NO_QUANTUM message!\n",
who_e);
result = EPERM;
}
break;
default:
result = no_sys(who_e, call_nr);
}
sendreply:
/* Send reply. */
if (result != SUSPEND) {
m_in.m_type = result; /* build reply message */
reply(who_e, &m_in); /* send it away */
}
}
return(OK);
}
int main() {
int count;
char *rest, *command_str, *param_str, *param2_str;
//Inicializar terminal...
devreq(KEYBOARD);
devreq(SCREEN);
devreq(TERMINAL);
while(TRUE) {
write(TERMINAL, PROMPT, strlen(PROMPT));
count = read_line(line_buffer, BUFF_LEN);
if (count == -1) {
while (read_line(line_buffer, BUFF_LEN) != 1);
write_line("Line too long");
} else {
line_buffer[count -1] = NULL;
rest = skip_spaces(line_buffer);
if (!*rest) {
command_use_error();
continue;
}
command_str = get_word(&rest);
rest = skip_spaces(rest);
param_str = get_word(&rest);
rest = skip_spaces(rest);
if (strcmp(HELP, command_str) == 0) {
print_shell_use();
} else if (strcmp(ECHO, command_str) == 0) {
write_line(param_str);
} else if (strcmp(PS, command_str) == 0) {
//Imprimir informacion de programas en ejecucion
print_ps(param_str);
} else if (strcmp(LS, command_str) == 0) {
//Imprimir lista de programas disponibles
print_ls(param_str);
} else if (strcmp(RUN, command_str) == 0) {
//Ejecutar un programa en foreground
do_run(param_str);
} else if (strcmp(RUN_BG, command_str) == 0) {
//Ejecutar un programa en background
do_runbg(param_str);
} else if (strcmp(NICE, command_str) == 0) {
param2_str = get_word(&rest);
//Cambiar prioridad de un proceso
do_nice(param_str, param2_str);
} else if (strcmp(KILL, command_str) == 0) {
//Ejecutar un programa en background
do_kill(param_str);
} else
command_use_error();
}
}
return 0;
}
