1 /* vi: set sw=4 ts=4: */
3 * Mini init implementation for busybox
6 * Copyright (C) 1995, 1996 by Bruce Perens <bruce@pixar.com>.
7 * Adjusted by so many folks, it's impossible to keep track.
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 /* Turn this on to disable all the dangerous
26 rebooting stuff when debugging.
40 #include <sys/fcntl.h>
41 #include <sys/ioctl.h>
42 #include <sys/mount.h>
43 #include <sys/types.h>
46 # include <sys/syslog.h>
49 /* From <linux/vt.h> */
51 unsigned short v_active; /* active vt */
52 unsigned short v_signal; /* signal to send */
53 unsigned short v_state; /* vt bitmask */
55 #define VT_GETSTATE 0x5603 /* get global vt state info */
57 /* From <linux/serial.h> */
58 struct serial_struct {
67 unsigned short close_delay;
68 char reserved_char[2];
70 unsigned short closing_wait; /* time to wait before closing */
71 unsigned short closing_wait2; /* no longer used... */
77 #ifndef RB_HALT_SYSTEM
78 #define RB_HALT_SYSTEM 0xcdef0123
79 #define RB_ENABLE_CAD 0x89abcdef
80 #define RB_DISABLE_CAD 0
81 #define RB_POWER_OFF 0x4321fedc
82 #define RB_AUTOBOOT 0x01234567
83 #if defined(__GLIBC__)
84 #include <sys/reboot.h>
85 #define init_reboot(magic) reboot(magic)
87 #define init_reboot(magic) reboot(0xfee1dead, 672274793, magic)
92 #define _PATH_STDPATH "/usr/bin:/bin:/usr/sbin:/sbin"
96 #if defined BB_FEATURE_INIT_COREDUMPS
98 * When a file named CORE_ENABLE_FLAG_FILE exists, setrlimit is called
99 * before processes are spawned to set core file size as unlimited.
100 * This is for debugging only. Don't use this is production, unless
101 * you want core dumps lying about....
103 #define CORE_ENABLE_FLAG_FILE "/.init_enable_core"
104 #include <sys/resource.h>
105 #include <sys/time.h>
108 #define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
110 #if defined(__GLIBC__)
111 #include <sys/kdaemon.h>
113 static _syscall2(int, bdflush, int, func, int, data);
114 #endif /* __GLIBC__ */
117 #define VT_PRIMARY "/dev/tty1" /* Primary virtual console */
118 #define VT_SECONDARY "/dev/tty2" /* Virtual console */
119 #define VT_LOG "/dev/tty3" /* Virtual console */
120 #define SERIAL_CON0 "/dev/ttyS0" /* Primary serial console */
121 #define SERIAL_CON1 "/dev/ttyS1" /* Serial console */
122 #define SHELL "/bin/sh" /* Default shell */
123 #define INITTAB "/etc/inittab" /* inittab file location */
125 #define INIT_SCRIPT "/etc/init.d/rcS" /* Default sysinit script. */
131 /* Allowed init action types */
141 /* A mapping between "inittab" action name strings and action type codes. */
142 typedef struct initActionType {
144 initActionEnum action;
147 static const struct initActionType actions[] = {
148 {"sysinit", SYSINIT},
149 {"respawn", RESPAWN},
150 {"askfirst", ASKFIRST},
153 {"ctrlaltdel", CTRLALTDEL},
157 /* Set up a linked list of initActions, to be read from inittab */
158 typedef struct initActionTag initAction;
159 struct initActionTag {
164 initActionEnum action;
166 initAction *initActionList = NULL;
169 static char *secondConsole = VT_SECONDARY;
170 static char *log = VT_LOG;
171 static int kernelVersion = 0;
172 static char termType[32] = "TERM=linux";
173 static char console[32] = _PATH_CONSOLE;
175 static void delete_initAction(initAction * action);
178 /* Print a message to the specified device.
179 * Device may be bitwise-or'd from LOG | CONSOLE */
180 static void message(int device, char *fmt, ...)
181 __attribute__ ((format (printf, 2, 3)));
182 static void message(int device, char *fmt, ...)
189 /* Log the message to syslogd */
193 va_start(arguments, fmt);
194 vsnprintf(msg, sizeof(msg), fmt, arguments);
196 openlog("init", 0, LOG_USER);
197 syslog(LOG_USER|LOG_INFO, msg);
201 static int log_fd = -1;
203 /* Take full control of the log tty, and never close it.
204 * It's mine, all mine! Muhahahaha! */
207 /* don't even try to log, because there is no such console */
209 /* log to main console instead */
211 } else if ((log_fd = device_open(log, O_RDWR|O_NDELAY)) < 0) {
213 fprintf(stderr, "Bummer, can't write to log on %s!\r\n", log);
219 if ((device & LOG) && (log_fd >= 0)) {
220 va_start(arguments, fmt);
221 vdprintf(log_fd, fmt, arguments);
226 if (device & CONSOLE) {
227 /* Always send console messages to /dev/console so people will see them. */
230 device_open(_PATH_CONSOLE,
231 O_WRONLY | O_NOCTTY | O_NDELAY)) >= 0) {
232 va_start(arguments, fmt);
233 vdprintf(fd, fmt, arguments);
237 fprintf(stderr, "Bummer, can't print: ");
238 va_start(arguments, fmt);
239 vfprintf(stderr, fmt, arguments);
246 /* Set terminal settings to reasonable defaults */
247 void set_term(int fd)
253 /* set control chars */
254 tty.c_cc[VINTR] = 3; /* C-c */
255 tty.c_cc[VQUIT] = 28; /* C-\ */
256 tty.c_cc[VERASE] = 127; /* C-? */
257 tty.c_cc[VKILL] = 21; /* C-u */
258 tty.c_cc[VEOF] = 4; /* C-d */
259 tty.c_cc[VSTART] = 17; /* C-q */
260 tty.c_cc[VSTOP] = 19; /* C-s */
261 tty.c_cc[VSUSP] = 26; /* C-z */
263 /* use line dicipline 0 */
266 /* Make it be sane */
267 tty.c_cflag &= CBAUD|CBAUDEX|CSIZE|CSTOPB|PARENB|PARODD;
268 tty.c_cflag |= HUPCL|CLOCAL;
271 tty.c_iflag = ICRNL | IXON | IXOFF;
274 tty.c_oflag = OPOST | ONLCR;
278 ISIG | ICANON | ECHO | ECHOE | ECHOK | ECHOCTL | ECHOKE | IEXTEN;
280 tcsetattr(fd, TCSANOW, &tty);
283 /* How much memory does this machine have? */
284 static int check_free_memory()
288 /* Pre initialize mem_unit in case this kernel is something prior to
289 * the linux 2.4 kernel (which will actually fill in mem_unit... */
291 if (sysinfo(&info) != 0) {
292 printf("Error checking free memory: %s\n", strerror(errno));
295 if (info.mem_unit==0) {
296 /* Looks like we have a kernel prior to Linux 2.4.x */
298 info.totalram/=info.mem_unit;
299 info.totalswap/=info.mem_unit;
301 /* Bah. Linux 2.4.x completely changed sysinfo. This can in theory
302 overflow a 32 bit unsigned long, but who puts more then 4GiB ram+swap
303 on an embedded system? */
305 info.totalram*=info.mem_unit;
306 info.totalswap*=info.mem_unit;
309 return(info.totalram+info.totalswap);
312 static void console_init()
315 int tried_devcons = 0;
316 int tried_vtprimary = 0;
318 struct serial_struct sr;
321 if ((s = getenv("TERM")) != NULL) {
322 snprintf(termType, sizeof(termType) - 1, "TERM=%s", s);
325 if ((s = getenv("CONSOLE")) != NULL) {
326 snprintf(console, sizeof(console) - 1, "%s", s);
329 /* sparc kernel supports console=tty[ab] parameter which is also
330 * passed to init, so catch it here */
331 else if ((s = getenv("console")) != NULL) {
332 /* remap tty[ab] to /dev/ttyS[01] */
333 if (strcmp(s, "ttya") == 0)
334 snprintf(console, sizeof(console) - 1, "%s", SERIAL_CON0);
335 else if (strcmp(s, "ttyb") == 0)
336 snprintf(console, sizeof(console) - 1, "%s", SERIAL_CON1);
340 /* 2.2 kernels: identify the real console backend and try to use it */
341 if (ioctl(0, TIOCGSERIAL, &sr) == 0) {
342 /* this is a serial console */
343 snprintf(console, sizeof(console) - 1, "/dev/ttyS%d", sr.line);
344 } else if (ioctl(0, VT_GETSTATE, &vt) == 0) {
345 /* this is linux virtual tty */
346 snprintf(console, sizeof(console) - 1, "/dev/tty%d",
349 snprintf(console, sizeof(console) - 1, "%s", _PATH_CONSOLE);
354 while ((fd = open(console, O_RDONLY | O_NONBLOCK)) < 0) {
355 /* Can't open selected console -- try /dev/console */
356 if (!tried_devcons) {
358 snprintf(console, sizeof(console) - 1, "%s", _PATH_CONSOLE);
361 /* Can't open selected console -- try vt1 */
362 if (!tried_vtprimary) {
364 snprintf(console, sizeof(console) - 1, "%s", VT_PRIMARY);
370 /* Perhaps we should panic here? */
371 snprintf(console, sizeof(console) - 1, "/dev/null");
373 /* check for serial console and disable logging to tty3 & running a
375 if (ioctl(0, TIOCGSERIAL, &sr) == 0) {
377 secondConsole = NULL;
378 /* Force the TERM setting to vt102 for serial console --
379 * iff TERM is set to linux (the default) */
380 if (strcmp( termType, "TERM=linux" ) == 0)
381 snprintf(termType, sizeof(termType) - 1, "TERM=vt102");
382 message(LOG | CONSOLE,
383 "serial console detected. Disabling virtual terminals.\r\n");
387 message(LOG, "console=%s\n", console);
390 static pid_t run(char *command, char *terminal, int get_enter)
397 static const char press_enter[] =
399 "\nPlease press Enter to activate this console. ";
400 char *environment[] = {
402 "PATH=/usr/bin:/bin:/usr/sbin:/sbin",
410 if ((pid = fork()) == 0) {
417 /* Reset signal handlers set for parent process */
418 signal(SIGUSR1, SIG_DFL);
419 signal(SIGUSR2, SIG_DFL);
420 signal(SIGINT, SIG_DFL);
421 signal(SIGTERM, SIG_DFL);
422 signal(SIGHUP, SIG_DFL);
424 if ((fd = device_open(terminal, O_RDWR)) < 0) {
425 message(LOG | CONSOLE, "Bummer, can't open %s\r\n", terminal);
431 ioctl(0, TIOCSCTTY, 0);
432 tcsetpgrp(0, getpgrp());
435 if (get_enter == TRUE) {
437 * Save memory by not exec-ing anything large (like a shell)
438 * before the user wants it. This is critical if swap is not
439 * enabled and the system has low memory. Generally this will
440 * be run on the second virtual console, and the first will
441 * be allowed to start a shell or whatever an init script
446 pid_t shell_pgid = getpid();
447 message(LOG, "Waiting for enter to start '%s' (pid %d, console %s)\r\n",
448 command, shell_pgid, terminal);
450 write(fileno(stdout), press_enter, sizeof(press_enter) - 1);
451 read(fileno(stdin), &c, 1);
455 /* Log the process name and args */
456 message(LOG, "Starting pid %d, console %s: '%s'\r\n",
457 shell_pgid, terminal, command);
460 /* See if any special /bin/sh requiring characters are present */
461 if (strpbrk(command, "~`!$^&*()=|\\{}[];\"'<>?") != NULL) {
464 strcpy(buf, "exec ");
465 strncat(buf, command, sizeof(buf) - strlen(buf) - 1);
469 /* Convert command (char*) into cmd (char**, one word per string) */
470 for (tmpCmd = command, i = 0;
471 (tmpCmd = strsep(&command, " \t")) != NULL;) {
472 if (*tmpCmd != '\0') {
481 #if defined BB_FEATURE_INIT_COREDUMPS
484 if (stat (CORE_ENABLE_FLAG_FILE, &sb) == 0) {
486 limit.rlim_cur = RLIM_INFINITY;
487 limit.rlim_max = RLIM_INFINITY;
488 setrlimit(RLIMIT_CORE, &limit);
493 /* Now run it. The new program will take over this PID,
494 * so nothing further in init.c should be run. */
495 execve(cmd[0], cmd, environment);
497 /* We're still here? Some error happened. */
498 message(LOG | CONSOLE, "Bummer, could not run '%s': %s\n", cmd[0],
505 static int waitfor(char *command, char *terminal, int get_enter)
508 int pid = run(command, terminal, get_enter);
511 wpid = wait(&status);
512 if (wpid > 0 && wpid != pid) {
521 /* Make sure there is enough memory to do something useful. *
522 * Calls "swapon -a" if needed so be sure /etc/fstab is present... */
523 static void check_memory()
527 if (check_free_memory() > 1000)
530 if (stat("/etc/fstab", &statBuf) == 0) {
531 /* swapon -a requires /proc typically */
532 waitfor("mount proc /proc -t proc", console, FALSE);
533 /* Try to turn on swap */
534 waitfor("swapon -a", console, FALSE);
535 if (check_free_memory() < 1000)
543 "Sorry, your computer does not have enough memory.\r\n");
548 /* Run all commands to be run right before halt/reboot */
549 static void run_lastAction(void)
552 for (a = initActionList; a; a = a->nextPtr) {
553 if (a->action == CTRLALTDEL) {
554 waitfor(a->process, a->console, FALSE);
555 delete_initAction(a);
562 static void shutdown_system(void)
565 /* first disable our SIGHUP signal */
566 signal(SIGHUP, SIG_DFL);
568 /* Allow Ctrl-Alt-Del to reboot system. */
569 init_reboot(RB_ENABLE_CAD);
571 message(CONSOLE|LOG, "\r\nThe system is going down NOW !!\r\n");
574 /* Send signals to every process _except_ pid 1 */
575 message(CONSOLE|LOG, "Sending SIGTERM to all processes.\r\n");
580 message(CONSOLE|LOG, "Sending SIGKILL to all processes.\r\n");
584 /* run everything to be run at "ctrlaltdel" */
588 if (kernelVersion > 0 && kernelVersion <= KERNEL_VERSION(2,2,11)) {
589 /* bdflush, kupdate not needed for kernels >2.2.11 */
595 static void halt_signal(int sig)
599 "The system is halted. Press %s or turn off power\r\n",
600 (secondConsole == NULL) /* serial console */
601 ? "Reset" : "CTRL-ALT-DEL");
604 /* allow time for last message to reach serial console */
607 if (sig == SIGUSR2 && kernelVersion >= KERNEL_VERSION(2,2,0))
608 init_reboot(RB_POWER_OFF);
610 init_reboot(RB_HALT_SYSTEM);
614 static void reboot_signal(int sig)
617 message(CONSOLE|LOG, "Please stand by while rebooting the system.\r\n");
620 /* allow time for last message to reach serial console */
623 init_reboot(RB_AUTOBOOT);
627 #if defined BB_FEATURE_INIT_CHROOT
629 #if ! defined BB_FEATURE_USE_PROCFS
630 #error Sorry, I depend on the /proc filesystem right now.
633 static void check_chroot(int sig)
635 char *argv_init[2] = { "init", NULL, };
636 char *envp_init[3] = { "HOME=/", "TERM=linux", NULL, };
637 char rootpath[256], *tc;
640 if ((fd = open("/proc/sys/kernel/init-chroot", O_RDONLY)) == -1) {
642 "SIGHUP recived, but could not open proc file\r\n");
646 if (read(fd, rootpath, sizeof(rootpath)) == -1) {
648 "SIGHUP recived, but could not read proc file\r\n");
654 if (rootpath[0] == '\0') {
656 "SIGHUP recived, but new root is not valid: %s\r\n",
662 tc = strrchr(rootpath, '\n');
665 /* Ok, making it this far means we commit */
666 message(CONSOLE, "Please stand by, changing root to `%s'.\r\n",
669 /* kill all other programs first */
670 message(CONSOLE, "Sending SIGTERM to all processes.\r\n");
675 message(CONSOLE, "Sending SIGKILL to all processes.\r\n");
680 /* ok, we don't need /proc anymore. we also assume that the signaling
681 * process left the rest of the filesystems alone for us */
684 /* Ok, now we chroot. Hopefully we only have two things mounted, the
685 * new chroot'd mount point, and the old "/" mount. s,
686 * we go ahead and unmount the old "/". This should trigger the kernel
687 * to set things up the Right Way(tm). */
689 if (!chroot(rootpath))
692 /* If the chroot fails, we are already too far to turn back, so we
693 * continue and hope that executing init below will revive the system */
695 /* close all of our descriptors and open new ones */
699 open("/dev/console", O_RDWR, 0);
703 message(CONSOLE, "Executing real init...\r\n");
704 /* execute init in the (hopefully) new root */
705 execve("/sbin/init", argv_init, envp_init);
708 "ERROR: Could not exec new init. Press %s to reboot.\r\n",
709 (secondConsole == NULL) /* serial console */
710 ? "Reset" : "CTRL-ALT-DEL");
713 #endif /* BB_FEATURE_INIT_CHROOT */
715 #endif /* ! DEBUG_INIT */
717 void new_initAction(initActionEnum action, char *process, char *cons)
719 initAction *newAction;
724 /* If BusyBox detects that a serial console is in use,
725 * then entries not refering to the console or null devices will _not_ be run.
726 * The exception to this rule is the null device.
728 if (secondConsole == NULL && strcmp(cons, console)
729 && strcmp(cons, "/dev/null"))
732 newAction = calloc((size_t) (1), sizeof(initAction));
734 message(LOG | CONSOLE, "Memory allocation failure\n");
738 newAction->nextPtr = initActionList;
739 initActionList = newAction;
740 strncpy(newAction->process, process, 255);
741 newAction->action = action;
742 strncpy(newAction->console, cons, 255);
744 // message(LOG|CONSOLE, "process='%s' action='%d' console='%s'\n",
745 // newAction->process, newAction->action, newAction->console);
748 static void delete_initAction(initAction * action)
750 initAction *a, *b = NULL;
752 for (a = initActionList; a; b = a, a = a->nextPtr) {
755 initActionList = a->nextPtr;
757 b->nextPtr = a->nextPtr;
765 /* NOTE that if BB_FEATURE_USE_INITTAB is NOT defined,
766 * then parse_inittab() simply adds in some default
767 * actions(i.e runs INIT_SCRIPT and then starts a pair
768 * of "askfirst" shells). If BB_FEATURE_USE_INITTAB
769 * _is_ defined, but /etc/inittab is missing, this
770 * results in the same set of default behaviors.
772 void parse_inittab(void)
774 #ifdef BB_FEATURE_USE_INITTAB
776 char buf[256], lineAsRead[256], tmpConsole[256];
777 char *id, *runlev, *action, *process, *eol;
778 const struct initActionType *a = actions;
782 file = fopen(INITTAB, "r");
784 /* No inittab file -- set up some default behavior */
786 /* Swapoff on halt/reboot */
787 new_initAction(CTRLALTDEL, "/sbin/swapoff -a > /dev/null 2>&1", console);
788 /* Umount all filesystems on halt/reboot */
789 new_initAction(CTRLALTDEL, "/bin/umount -a -r > /dev/null 2>&1", console);
790 /* Askfirst shell on tty1 */
791 new_initAction(ASKFIRST, SHELL, console);
792 /* Askfirst shell on tty2 */
793 if (secondConsole != NULL)
794 new_initAction(ASKFIRST, SHELL, secondConsole);
796 new_initAction(SYSINIT, INIT_SCRIPT, console);
799 #ifdef BB_FEATURE_USE_INITTAB
802 while (fgets(buf, 255, file) != NULL) {
804 /* Skip leading spaces */
805 for (id = buf; *id == ' ' || *id == '\t'; id++);
807 /* Skip the line if it's a comment */
808 if (*id == '#' || *id == '\n')
811 /* Trim the trailing \n */
812 eol = strrchr(id, '\n');
816 /* Keep a copy around for posterity's sake (and error msgs) */
817 strcpy(lineAsRead, buf);
819 /* Separate the ID field from the runlevels */
820 runlev = strchr(id, ':');
821 if (runlev == NULL || *(runlev + 1) == '\0') {
822 message(LOG | CONSOLE, "Bad inittab entry: %s\n", lineAsRead);
829 /* Separate the runlevels from the action */
830 action = strchr(runlev, ':');
831 if (action == NULL || *(action + 1) == '\0') {
832 message(LOG | CONSOLE, "Bad inittab entry: %s\n", lineAsRead);
839 /* Separate the action from the process */
840 process = strchr(action, ':');
841 if (process == NULL || *(process + 1) == '\0') {
842 message(LOG | CONSOLE, "Bad inittab entry: %s\n", lineAsRead);
849 /* Ok, now process it */
851 while (a->name != 0) {
852 if (strcmp(a->name, action) == 0) {
856 strcpy(tmpConsole, "/dev/");
857 strncat(tmpConsole, id, 200);
858 if (stat(tmpConsole, &statBuf) != 0) {
859 message(LOG | CONSOLE,
860 "device '%s' does not exist. Did you read the directions?\n",
866 new_initAction(a->action, process, id);
874 /* Choke on an unknown action */
875 message(LOG | CONSOLE, "Bad inittab entry: %s\n", lineAsRead);
879 #endif /* BB_FEATURE_USE_INITTAB */
884 extern int init_main(int argc, char **argv)
891 /* Expect to be invoked as init with PID=1 or be invoked as linuxrc */
893 #ifdef BB_FEATURE_LINUXRC
894 && strstr(argv[0], "linuxrc") == NULL
898 usage("init\n\nInit is the parent of all processes.\n\n"
899 "This version of init is designed to be run only "
902 /* Set up sig handlers -- be sure to
903 * clear all of these in run() */
904 signal(SIGUSR1, halt_signal);
905 signal(SIGUSR2, halt_signal);
906 signal(SIGINT, reboot_signal);
907 signal(SIGTERM, reboot_signal);
908 #if defined BB_FEATURE_INIT_CHROOT
909 signal(SIGHUP, check_chroot);
912 /* Turn off rebooting via CTL-ALT-DEL -- we get a
913 * SIGINT on CAD so we can shut things down gracefully... */
914 init_reboot(RB_DISABLE_CAD);
917 /* Figure out what kernel this is running */
918 kernelVersion = get_kernel_revision();
920 /* Figure out where the default console should be */
923 /* Close whatever files are open, and reset the console. */
931 /* Make sure PATH is set to something sane */
932 putenv(_PATH_STDPATH);
937 #if ! defined BB_FEATURE_EXTRA_QUIET
941 "init started: BusyBox v%s (%s) multi-call binary\r\n",
945 #if ! defined BB_FEATURE_EXTRA_QUIET
949 "init(%d) started: BusyBox v%s (%s) multi-call binary\r\n",
950 getpid(), BB_VER, BB_BT);
954 /* Make sure there is enough memory to do something useful. */
957 /* Check if we are supposed to be in single user mode */
958 if (argc > 1 && (!strcmp(argv[1], "single") ||
959 !strcmp(argv[1], "-s") || !strcmp(argv[1], "1"))) {
960 /* Ask first then start a shell on tty2 */
961 if (secondConsole != NULL)
962 new_initAction(ASKFIRST, SHELL, secondConsole);
963 /* Start a shell on tty1 */
964 new_initAction(RESPAWN, SHELL, console);
966 /* Not in single user mode -- see what inittab says */
968 /* NOTE that if BB_FEATURE_USE_INITTAB is NOT defined,
969 * then parse_inittab() simply adds in some default
970 * actions(i.e runs INIT_SCRIPT and then starts a pair
971 * of "askfirst" shells */
975 /* Fix up argv[0] to be certain we claim to be init */
976 strncpy(argv[0], "init", strlen(argv[0])+1);
978 strncpy(argv[1], "\0", strlen(argv[1])+1);
980 /* Now run everything that needs to be run */
982 /* First run the sysinit command */
983 for (a = initActionList; a; a = a->nextPtr) {
984 if (a->action == SYSINIT) {
985 waitfor(a->process, a->console, FALSE);
986 /* Now remove the "sysinit" entry from the list */
987 delete_initAction(a);
990 /* Next run anything that wants to block */
991 for (a = initActionList; a; a = a->nextPtr) {
992 if (a->action == WAIT) {
993 waitfor(a->process, a->console, FALSE);
994 /* Now remove the "wait" entry from the list */
995 delete_initAction(a);
998 /* Next run anything to be run only once */
999 for (a = initActionList; a; a = a->nextPtr) {
1000 if (a->action == ONCE) {
1001 run(a->process, a->console, FALSE);
1002 /* Now remove the "once" entry from the list */
1003 delete_initAction(a);
1006 /* If there is nothing else to do, stop */
1007 if (initActionList == NULL) {
1008 message(LOG | CONSOLE,
1009 "No more tasks for init -- sleeping forever.\n");
1014 /* Now run the looping stuff for the rest of forever */
1016 for (a = initActionList; a; a = a->nextPtr) {
1017 /* Only run stuff with pid==0. If they have
1018 * a pid, that means they are still running */
1020 switch (a->action) {
1022 /* run the respawn stuff */
1023 a->pid = run(a->process, a->console, FALSE);
1026 /* run the askfirst stuff */
1027 a->pid = run(a->process, a->console, TRUE);
1029 /* silence the compiler's incessant whining */
1035 /* Wait for a child process to exit */
1036 wpid = wait(&status);
1038 /* Find out who died and clean up their corpse */
1039 for (a = initActionList; a; a = a->nextPtr) {
1040 if (a->pid == wpid) {
1043 "Process '%s' (pid %d) exited. Scheduling it for restart.\n",
1054 c-file-style: "linux"