/*
* _assert ile ilgili uniq/kernel.h'deki tanimlanan macroya bakildiginda
* kullanimi hakkinda daha c*k bilgiye sahip olabilirsiniz.
*
* @param err : hata mesaji
*/
void _assert(const char *err,const char *file,uint32_t line_no){
debug_print(KERN_EMERG,"Kernel Assert Fault : %s",err);
debug_print(KERN_DUMP,"file name : %s, line : %u",file,line_no);
disable_irq();
halt_system();
}
/*
* die,kendisine verilen formatli yada formatsiz karakter
* dizisini hata mesaji olarak ekrana yazdirir ve debug_print'i
* direk kullanirken sistem calismaya devam ederken 'die' ile
* sistem durdurulur.
*
* @param fmt : format
* @param ... : argumanlar
*/
void die(const char *fmt, ...){
char err_msg[4096];
va_list arg_list;
va_start(arg_list,fmt);
vsnprintf(err_msg,sizeof(err_msg)-1,fmt,arg_list);
debug_print(KERN_EMERG,"%s",err_msg);
va_end(arg_list);
disable_irq();
halt_system();
}
int main(int argc, char *argv[])
{
struct sigaction act;
int rc, rc1, rc2, readonly, clobbercfg;
clobbercfg = readonly = 0;
openlog("flatfsd", LOG_PERROR, LOG_DAEMON);
while ((rc = getopt(argc, argv, "vcnribwH123hs?")) != EOF) {
switch (rc) {
case 'w':
clobbercfg++;
readonly++;
break;
case 'r':
readonly++;
break;
case 'n':
nowrite = 1;
break;
case 'c':
#if !defined(USING_FLASH_FILESYSTEM)
rc = flat_check();
if (rc < 0) {
#ifdef LOGGING
char ecmd[64];
sprintf(ecmd, "/bin/logd chksum-bad %d", -rc);
system(ecmd);
#endif
printf("Flash filesystem is invalid %d - check syslog\n", rc);
} else {
printf("Flash filesystem is valid\n");
#ifdef LOGGING
system("/bin/logd chksum-good");
#endif
}
exit(rc);
#else
exit(0);
#endif
break;
case 'v':
version();
exit(0);
break;
case 's':
log_caller("/bin/logd flatfsd-s");
exit(saveconfig());
break;
case 'b':
log_caller("/bin/logd flatfsd-b");
exit(reboot_system());
break;
case 'H':
log_caller("/bin/logd flatfsd-h");
exit(halt_system());
break;
case 'i':
log_caller("/bin/logd flatfsd-i");
exit(reset_config());
break;
case '1':
fsver = 1;
break;
case '2':
fsver = 2;
break;
case '3':
fsver = 3;
break;
case 'h':
case '?':
usage(0);
break;
default:
usage(1);
break;
}
}
if (readonly) {
rc1 = rc2 = 0;
if (clobbercfg ||
#if !defined(USING_FLASH_FILESYSTEM)
((rc = flat_restorefs()) < 0) ||
#endif
(rc1 = flat_filecount()) <= 0 ||
(rc2 = flat_needinit())
) {
#ifdef LOGGING
char ecmd[64];
/* log the reason we have for killing the flatfs */
if (clobbercfg)
sprintf(ecmd, "/bin/logd newflatfs clobbered");
else if (rc < 0)
sprintf(ecmd, "/bin/logd newflatfs recreate=%d", rc);
else if (rc1 <= 0)
sprintf(ecmd, "/bin/logd newflatfs filecount=%d", rc1);
else if (rc2)
sprintf(ecmd, "/bin/logd newflatfs needinit");
else
sprintf(ecmd, "/bin/logd newflatfs unknown");
system(ecmd);
#endif
syslog(LOG_ERR, "Nonexistent or bad flatfs (%d), creating new one...", rc);
flat_clean(1);
if ((rc = flat_new(DEFAULTDIR)) < 0) {
syslog(LOG_ERR, "Failed to create new flatfs, err=%d errno=%d",
rc, errno);
exit(1);
}
save_config_to_flash();
}
syslog(LOG_INFO, "Created %d configuration files (%d bytes)",
numfiles, numbytes);
exit(0);
}
creatpidfile();
act.sa_handler = sighup;
memset(&act.sa_mask, 0, sizeof(act.sa_mask));
act.sa_flags = SA_RESTART;
act.sa_restorer = 0;
sigaction(SIGHUP, &act, NULL);
act.sa_handler = sigusr1;
memset(&act.sa_mask, 0, sizeof(act.sa_mask));
act.sa_flags = SA_RESTART;
act.sa_restorer = 0;
sigaction(SIGUSR1, &act, NULL);
act.sa_handler = sigusr2;
memset(&act.sa_mask, 0, sizeof(act.sa_mask));
act.sa_flags = SA_RESTART;
act.sa_restorer = 0;
sigaction(SIGUSR2, &act, NULL);
act.sa_handler = sigpwr;
memset(&act.sa_mask, 0, sizeof(act.sa_mask));
act.sa_flags = SA_RESTART;
act.sa_restorer = 0;
sigaction(SIGPWR, &act, NULL);
/* Make sure we don't suddenly exit while we are writing */
act.sa_handler = sigexit;
memset(&act.sa_mask, 0, sizeof(act.sa_mask));
act.sa_flags = SA_RESTART;
act.sa_restorer = 0;
sigaction(SIGINT, &act, NULL);
sigaction(SIGTERM, &act, NULL);
sigaction(SIGQUIT, &act, NULL);
register_resetpid();
/*
* Spin forever, waiting for a signal to write...
*/
for (;;) {
if (recv_usr1) {
struct stat st_buf;
recv_usr1 = 0;
/* Don't write out config if temp file exists. */
if (stat(IGNORE_FLASH_WRITE_FILE, &st_buf) == 0) {
syslog(LOG_INFO, "Not writing to flash "
"because %s exists",
IGNORE_FLASH_WRITE_FILE);
continue;
}
save_config_to_flash();
continue;
}
if (recv_hup) {
/*
* Make sure we do the check above first so that we
* commit to flash before rebooting.
*/
recv_hup = 0;
reboot_now();
/*notreached*/
exit(1);
}
if (recv_pwr) {
/*
* Ditto for halt
*/
recv_pwr = 0;
halt_now();
/*notreached*/
exit(1);
}
if (recv_usr2) {
#ifdef LOGGING
system("/bin/logd button");
#endif
recv_usr2 = 0;
current_cmd++;
if (cmd_list[current_cmd].action == NULL) /* wrap */
current_cmd = 0;
}
if (exit_flatfsd)
break;
if (current_cmd)
led_pause();
else if (!recv_hup && !recv_usr1 && !recv_usr2 && !recv_pwr)
pause();
}
return 0;
}
