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This commit is contained in:
Eric Andersen
1999-12-07 08:37:31 +00:00
parent 0ecb54a0f3
commit d00c262847
9 changed files with 128 additions and 59 deletions
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76
init.c
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@ -55,6 +55,7 @@
#define VT_LOG "/dev/tty3" /* Virtual console */
#define SERIAL_CON0 "/dev/ttyS0" /* Primary serial console */
#define SERIAL_CON1 "/dev/ttyS1" /* Serial console */
#define GETTY "/sbin/getty" /* Default location of getty */
#define SHELL "/bin/sh" /* Default shell */
#define INITSCRIPT "/etc/init.d/rcS" /* Initscript. */
@ -446,15 +447,19 @@ static void reboot_signal(int sig)
extern int init_main(int argc, char **argv)
{
int run_rc = TRUE;
int wait_for_enter = TRUE;
int run_rc = FALSE;
int single = FALSE;
int wait_for_enter_tty1 = TRUE;
int wait_for_enter_tty2 = TRUE;
pid_t pid1 = 0;
pid_t pid2 = 0;
struct stat statbuf;
const char* const rc_script_command[] = { INITSCRIPT, INITSCRIPT, 0};
const char* const getty1_command[] = { GETTY, GETTY, VT_PRIMARY, 0};
const char* const getty2_command[] = { GETTY, GETTY, VT_SECONDARY, 0};
const char* const shell_command[] = { SHELL, "-" SHELL, 0};
const char* const* tty0_command = shell_command;
const char* const* tty1_command = shell_command;
const char* const* tty2_command = shell_command;
#ifdef BB_INIT_CMD_IF_RC_SCRIPT_EXITS
const char* const rc_exit_command[] = { "BB_INIT_CMD_IF_RC_SCRIPT_EXITS",
"BB_INIT_CMD_IF_RC_SCRIPT_EXITS", 0 };
@ -477,13 +482,6 @@ extern int init_main(int argc, char **argv)
}
#endif
/* Check if we are supposed to be in single user mode */
if ( argc > 1 && (!strcmp(argv[1], "single") ||
!strcmp(argv[1], "-s") || !strcmp(argv[1], "1"))) {
run_rc = FALSE;
}
/* Set up sig handlers -- be sure to
* clear all of these in run() */
signal(SIGUSR1, halt_signal);
@ -529,27 +527,55 @@ extern int init_main(int argc, char **argv)
/* Make sure there is enough memory to do something useful. */
check_memory();
/* Make sure an init script exists before trying to run it */
if (run_rc == TRUE && stat(INITSCRIPT, &statbuf)==0) {
wait_for_enter = FALSE;
tty0_command = rc_script_command;
/* Check if we are supposed to be in single user mode */
if ( argc > 1 && (!strcmp(argv[1], "single") ||
!strcmp(argv[1], "-s") || !strcmp(argv[1], "1"))) {
single = TRUE;
tty1_command = shell_command;
tty2_command = shell_command;
}
/* Make sure an init script exists before trying to run it */
if (single==FALSE && stat(INITSCRIPT, &statbuf)==0) {
run_rc = TRUE;
wait_for_enter_tty1 = FALSE;
tty1_command = rc_script_command;
}
/* Make sure /sbin/getty exists before trying to run it */
if (stat(GETTY, &statbuf)==0) {
char* where;
wait_for_enter_tty2 = FALSE;
where = strrchr( console, '/');
if ( where != NULL) {
strcpy( (char*)getty2_command[2], where);
}
tty2_command = getty2_command;
/* Check on hooking a getty onto tty1 */
if (run_rc == FALSE && single==FALSE) {
wait_for_enter_tty1 = FALSE;
where = strrchr( second_console, '/');
if ( where != NULL) {
strcpy( (char*)getty1_command[2], where);
}
tty1_command = getty1_command;
}
}
/* Ok, now launch the rc script and/or prepare to
* start up some VTs if somebody hits enter...
*/
/* Ok, now launch the tty1_command and tty2_command */
for (;;) {
pid_t wpid;
int status;
if (pid1 == 0 && tty0_command) {
pid1 = run(tty0_command, console, wait_for_enter);
if (pid1 == 0 && tty1_command) {
pid1 = run(tty1_command, console, wait_for_enter_tty1);
}
if (pid2 == 0 && tty1_command && second_console) {
pid2 = run(tty1_command, second_console, TRUE);
#ifdef BB_FEATURE_INIT_SECOND_CONSOLE
if (pid2 == 0 && tty2_command && second_console) {
pid2 = run(tty2_command, second_console, wait_for_enter_tty2);
}
#endif
wpid = wait(&status);
if (wpid > 0 ) {
message(LOG, "pid %d exited, status=%x.\n", wpid, status);
@ -563,14 +589,16 @@ extern int init_main(int argc, char **argv)
else {
pid1 = 0;
run_rc=FALSE;
wait_for_enter=TRUE;
tty0_command=rc_exit_command;
wait_for_enter_tty1=TRUE;
tty1_command=rc_exit_command;
}
#endif
}
#ifdef BB_FEATURE_INIT_SECOND_CONSOLE
if (wpid == pid2) {
pid2 = 0;
}
#endif
sleep(1);
}
}