diff options
| -rw-r--r-- | init/init.c | 47 |
1 files changed, 26 insertions, 21 deletions
diff --git a/init/init.c b/init/init.c index 61b302556..e2fde5f23 100644 --- a/init/init.c +++ b/init/init.c @@ -33,14 +33,15 @@ #endif /* Allowed init action types */ -#define SYSINIT 0x001 -#define RESPAWN 0x002 -#define ASKFIRST 0x004 -#define WAIT 0x008 -#define ONCE 0x010 -#define CTRLALTDEL 0x020 -#define SHUTDOWN 0x040 -#define RESTART 0x080 +#define SYSINIT 0x01 +#define RESPAWN 0x02 +/* like respawn, but wait for <Enter> to be pressed on tty: */ +#define ASKFIRST 0x04 +#define WAIT 0x08 +#define ONCE 0x10 +#define CTRLALTDEL 0x20 +#define SHUTDOWN 0x40 +#define RESTART 0x80 #define STR_SYSINIT "\x01" #define STR_RESPAWN "\x02" @@ -372,7 +373,10 @@ static pid_t run(const struct init_action *a) sigemptyset(&nmask); sigaddset(&nmask, SIGCHLD); sigprocmask(SIG_BLOCK, &nmask, &omask); - pid = vfork(); + if (BB_MMU && (a->action_type & ASKFIRST)) + pid = fork(); + else + pid = vfork(); sigprocmask(SIG_SETMASK, &omask, NULL); if (pid < 0) @@ -447,7 +451,8 @@ static pid_t run(const struct init_action *a) } #endif - /* NB: on NOMMU we can't wait for input in child */ + /* NB: on NOMMU we can't wait for input in child, so + * "askfirst" will work the same as "respawn". */ if (BB_MMU && (a->action_type & ASKFIRST)) { static const char press_enter[] ALIGN1 = #ifdef CUSTOMIZED_BANNER @@ -499,7 +504,7 @@ static void run_actions(int action_type) for (a = init_action_list; a; a = tmp) { tmp = a->next; - if (a->action_type == action_type) { + if (a->action_type & action_type) { // Pointless: run() will error out if open of device fails. ///* a->terminal of "" means "init's console" */ //if (a->terminal[0] && access(a->terminal, R_OK | W_OK)) { @@ -784,6 +789,7 @@ static void parse_inittab(void) fclose(file); } +#if ENABLE_FEATURE_USE_INITTAB static void reload_signal(int sig ATTRIBUTE_UNUSED) { struct init_action *a, *tmp; @@ -827,8 +833,9 @@ static void reload_signal(int sig ATTRIBUTE_UNUSED) delete_init_action(a); } } - run_actions(RESPAWN); + run_actions(RESPAWN | ASKFIRST); } +#endif int init_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; int init_main(int argc ATTRIBUTE_UNUSED, char **argv) @@ -952,18 +959,16 @@ int init_main(int argc ATTRIBUTE_UNUSED, char **argv) run_actions(ONCE); /* Redefine SIGHUP to reread /etc/inittab */ - if (ENABLE_FEATURE_USE_INITTAB) - signal(SIGHUP, reload_signal); - else - signal(SIGHUP, SIG_IGN); +#if ENABLE_FEATURE_USE_INITTAB + signal(SIGHUP, reload_signal); +#else + signal(SIGHUP, SIG_IGN); +#endif /* Now run the looping stuff for the rest of forever */ while (1) { - /* run the respawn stuff */ - run_actions(RESPAWN); - - /* run the askfirst stuff */ - run_actions(ASKFIRST); + /* run the respawn/askfirst stuff */ + run_actions(RESPAWN | ASKFIRST); /* Don't consume all CPU time -- sleep a bit */ sleep(1); |