void reload_inittab()
{
int i;
int oldnum;
char saveline[NUMCMD][CMDSIZ];
pid_t savepid[NUMCMD];
for (i=0; i<numcmd; i++) {
savepid[i] = inittab[i].pid;
strcpy(saveline[i], inittab[i].fullline);
}
oldnum = numcmd;
read_inittab();
/* See which ones still exist */
for(i = 0; i < numcmd; i++) {
int j;
for(j = 0; j < oldnum; j++) {
if(strcmp(saveline[j], inittab[i].fullline) == 0) {
inittab[i].pid = savepid[j];
savepid[j] = -1;
break;
}
}
}
/* Kill off processes no longer needed */
for(i = 0; i < oldnum; i++) {
if (savepid[i] > 1)
kill(savepid[i], SIGTERM);
}
}
void reload_inittab()
{
int i;
int oldnum;
char ** saveline = (char **) malloc(inittab_size * sizeof(char *));
pid_t * savepid = (pid_t*) malloc(inittab_size * sizeof(pid_t));
if (!saveline || !savepid) {
/* another failure case - what DO you do if init fails */
err("malloc failed");
_exit(1);
}
for (i=0; i<numcmd; i++) {
savepid[i] = inittab[i].pid;
saveline[i] = strdup(inittab[i].fullline);
if (!saveline[i]) {
err("malloc failed");
_exit(1);
}
}
oldnum = numcmd;
read_inittab();
/* See which ones still exist */
for(i = 0; i < numcmd; i++) {
int j;
for(j = 0; j < oldnum; j++) {
if(strcmp(saveline[j], inittab[i].fullline) == 0) {
inittab[i].pid = savepid[j];
savepid[j] = -1;
break;
}
}
}
/* Kill off processes no longer needed and free memory */
for(i = 0; i < oldnum; i++) {
if (savepid[i] > 1)
kill(savepid[i], SIGTERM);
free(saveline[i]);
}
free(saveline);
free(savepid);
}
int main(int argc, char *argv[])
{
int i;
struct sigaction sa;
/*
* setup all the signal handlers here
*/
memset(&sa, 0, sizeof(sa));
/* sa.sa_flags = SA_RESETHAND we want to keep the handlers armed */
sa.sa_handler = tstp_handler;
sigaction(SIGTSTP, &sa, NULL);
sa.sa_handler = cont_handler;
sigaction(SIGCONT, &sa, NULL);
sa.sa_handler = int_handler;
sigaction(SIGINT, &sa, NULL);
sa.sa_handler = respawn_children;
sigaction(SIGALRM, &sa, NULL);
sa.sa_handler = hup_handler;
sigaction(SIGHUP, &sa, NULL);
#if defined(CONSOLE_BAUD_RATE) && LINUX_VERSION_CODE < 0x020100
set_console_baud(CONSOLE_BAUD_RATE);
#endif
/*
* start up in single user mode if /etc/singleboot exists or if
* argv[1] is "single".
*/
if(boot_single(0, argc, argv)) enter_single();
#ifdef CONFIG_RTL865X
for(i = 1; i < argc; i++) {
if(argv[i] && !strcmp(argv[i], "uart1"))
boot_uart1=1;;
}
#endif
#ifdef RUN_RC
/* Register console if defined by boot */
#if LINUX_VERSION_CODE < 0x020100
if ((console_device = getenv("CONSOLE"))) {
char *sp;
unsetenv("CONSOLE");
if ((sp = strchr(console_device, ','))) {
*sp++ = 0;
set_console_baud(atoi(sp));
}
}
make_ascii_tty();
#else
{
struct stat st;
if (isatty(1)) {
have_console = 1;
make_ascii_tty();
} else if (fstat(1, &st) == -1 && errno == EBADF) {
close(0); close(1); close(2);
open("/dev/null", O_RDWR);
dup(0);
dup(0);
}
}
#endif
/*If we get a SIGTSTP before multi-user mode, do nothing*/
while(stopped)
pause();
if(do_rc() != 0 && boot_single(1, argc, argv) && !stopped)
enter_single();
while(stopped) /*Also if /etc/rc fails & we get SIGTSTP*/
pause();
#endif
write_wtmp(); /* write boottime record */
read_inittab();
#ifdef DEBUGGING
for(i = 0; i < numcmd; i++) {
char **p;
p = inittab[i].toks;
printf("toks= %s %s %s %s\n",p[0], p[1], p[2], p[3]);
printf("tty= %s\n", inittab[i].tty);
printf("termcap= %s\n", inittab[i].termcap);
}
/*exit(0);*/
#endif
#if LINUX_VERSION_CODE < 0x020100
for(i = 0; i < getdtablesize(); i++) close(i);
#else
i = 0;
if (have_console)
i = 3;
for(; i < getdtablesize(); i++) close(i);
#endif
for (;;) {
pid_t pid;
int vec;
if (run_sigint_processing) {
run_sigint_processing = 0;
sigint_processing();
}
respawn_children();
if (reload) {
reload = 0;
reload_inittab();
continue; /* process all reloads before waiting */
}
pid = wait(&vec);
alarm(0);
/* clear utmp entry, and append to wtmp if possible */
#if 0 /* DAVIDM */
{
struct utmp *ut;
int ut_fd;
utmpname(_PATH_UTMP);
setutent();
while((ut = getutent())) {
if(ut->ut_pid == pid) {
time(&ut->ut_time);
bzero(&ut->ut_user, UT_NAMESIZE);
bzero(&ut->ut_host, sizeof(ut->ut_host));
ut->ut_type = DEAD_PROCESS;
ut->ut_pid = 0;
ut->ut_addr = 0;
endutent();
pututline(ut);
if((ut_fd = open(_PATH_WTMP, O_APPEND|O_WRONLY)) >= 0) {
flock(ut_fd, LOCK_EX|LOCK_NB);
write(ut_fd, (const void *)ut, sizeof(struct utmp));
flock(ut_fd, LOCK_UN|LOCK_NB);
close(ut_fd);
}
break;
}
}
endutent();
}
#endif
for(i = 0; i < numcmd; i++) {
if(pid == inittab[i].pid) {
inittab[i].pid = -1;
}
}
}
}
