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Init is now even more perfect then before.

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-Erik
This commit is contained in:
Erik Andersen
2000-01-07 11:40:44 +00:00
parent 286b0de74d
commit 96e2abd084
7 changed files with 74 additions and 81 deletions
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46
init.c
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@@ -61,9 +61,11 @@
#define VT_LOG "/dev/tty3" /* Virtual console */
#define SERIAL_CON0 "/dev/ttyS0" /* Primary serial console */
#define SERIAL_CON1 "/dev/ttyS1" /* Serial console */
#define SHELL "-sh" /* Default shell */
#define SHELL "/bin/sh" /* Default shell */
#define INITTAB "/etc/inittab" /* inittab file location */
#ifndef INIT_SCRIPT
#define INIT_SCRIPT "/etc/init.d/rcS" /* Default sysinit script. */
#endif
#define LOG 0x1
#define CONSOLE 0x2
@@ -330,6 +332,7 @@ static pid_t run(char* command,
"\nPlease press Enter to activate this console. ";
if ((pid = fork()) == 0) {
int fd;
pid_t shell_pgid = getpid ();
/* Clean up */
@@ -338,17 +341,14 @@ static pid_t run(char* command,
close(2);
setsid();
if (device_open(terminal, O_RDWR) < 0) {
if ((fd=device_open(terminal, O_RDWR)) < 0) {
message(LOG|CONSOLE, "Bummer, can't open %s\r\n", terminal);
exit(1);
}
dup(0);
dup(0);
/* Grab control of the terminal. */
if (tcsetpgrp (0, getpgrp()) < 0) {
message(LOG|CONSOLE, "tcsetpgrp error: %s\r\n", strerror(errno));
}
set_term(0);
dup(fd);
dup(fd);
set_term(fd);
tcsetpgrp (fd, getpgrp());
/* Reset signal handlers set for parent process */
signal(SIGUSR1, SIG_DFL);
@@ -497,7 +497,7 @@ static void reboot_signal(int sig)
#endif
void new_initAction (const struct initActionType *a,
void new_initAction (initActionEnum action,
char* process, char* cons)
{
initAction* newAction;
@@ -517,7 +517,7 @@ void new_initAction (const struct initActionType *a,
newAction->nextPtr = initActionList;
initActionList = newAction;
strncpy( newAction->process, process, 255);
newAction->action = a->action;
newAction->action = action;
if (*cons != '\0') {
strncpy(newAction->console, cons, 255);
} else
@@ -561,12 +561,12 @@ void parse_inittab(void)
/* No inittab file -- set up some default behavior */
#endif
/* Askfirst shell on tty1 */
new_initAction( &(actions[3]), SHELL, console );
new_initAction( ASKFIRST, SHELL, console );
/* Askfirst shell on tty2 */
if (second_console != NULL)
new_initAction( &(actions[3]), SHELL, second_console );
new_initAction( ASKFIRST, SHELL, second_console );
/* sysinit */
new_initAction( &(actions[0]), INIT_SCRIPT, console );
new_initAction( SYSINIT, INIT_SCRIPT, console );
return;
#ifdef BB_FEATURE_USE_INITTAB
@@ -584,7 +584,6 @@ void parse_inittab(void)
/* Keep a copy around for posterity's sake (and error msgs) */
strcpy(lineAsRead, buf);
message(LOG|CONSOLE, "read='%s'\n", lineAsRead);
/* Grab the ID field */
s=p;
@@ -628,7 +627,7 @@ message(LOG|CONSOLE, "read='%s'\n", lineAsRead);
}
s = tmpConsole;
}
new_initAction( a, q, s);
new_initAction( a->action, q, s);
foundIt=TRUE;
}
a++;
@@ -712,9 +711,9 @@ extern int init_main(int argc, char **argv)
{
/* Ask first then start a shell on tty2 */
if (second_console != NULL)
new_initAction( &(actions[3]), SHELL, second_console);
new_initAction( ASKFIRST, SHELL, second_console);
/* Ask first then start a shell on tty1 */
new_initAction( &(actions[3]), SHELL, console);
new_initAction( ASKFIRST, SHELL, console);
} else {
/* Not in single user mode -- see what inittab says */
@@ -731,7 +730,7 @@ extern int init_main(int argc, char **argv)
/* First run the sysinit command */
for( a=initActionList ; a; a=a->nextPtr) {
if (a->action == SYSINIT) {
waitfor(a->process, console, FALSE);
waitfor(a->process, a->console, FALSE);
/* Now remove the "sysinit" entry from the list */
delete_initAction( a);
}
@@ -739,7 +738,7 @@ extern int init_main(int argc, char **argv)
/* Next run anything that wants to block */
for( a=initActionList ; a; a=a->nextPtr) {
if (a->action == WAIT) {
waitfor(a->process, console, FALSE);
waitfor(a->process, a->console, FALSE);
/* Now remove the "wait" entry from the list */
delete_initAction( a);
}
@@ -747,7 +746,7 @@ extern int init_main(int argc, char **argv)
/* Next run anything to be run only once */
for( a=initActionList ; a; a=a->nextPtr) {
if (a->action == ONCE) {
run(a->process, console, FALSE);
run(a->process, a->console, FALSE);
/* Now remove the "once" entry from the list */
delete_initAction( a);
}
@@ -760,7 +759,6 @@ extern int init_main(int argc, char **argv)
/* Now run the looping stuff for the rest of forever */
while (1) {
message(LOG|CONSOLE, "Looping\n");
for( a=initActionList ; a; a=a->nextPtr) {
/* Only run stuff with pid==0. If they have
* a pid, that means they are still running */
@@ -768,11 +766,11 @@ extern int init_main(int argc, char **argv)
switch(a->action) {
case RESPAWN:
/* run the respawn stuff */
a->pid = run(a->process, console, FALSE);
a->pid = run(a->process, a->console, FALSE);
break;
case ASKFIRST:
/* run the askfirst stuff */
a->pid = run(a->process, console, TRUE);
a->pid = run(a->process, a->console, TRUE);
break;
/* silence the compiler's incessant whining */
default: