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>
47 # include <sys/syslog.h>
51 /* From <linux/vt.h> */
53 unsigned short v_active; /* active vt */
54 unsigned short v_signal; /* signal to send */
55 unsigned short v_state; /* vt bitmask */
57 static const int VT_GETSTATE = 0x5603; /* get global vt state info */
59 /* From <linux/serial.h> */
60 struct serial_struct {
69 unsigned short close_delay;
70 char reserved_char[2];
72 unsigned short closing_wait; /* time to wait before closing */
73 unsigned short closing_wait2; /* no longer used... */
79 #ifndef RB_HALT_SYSTEM
80 static const int RB_HALT_SYSTEM = 0xcdef0123;
81 static const int RB_ENABLE_CAD = 0x89abcdef;
82 static const int RB_DISABLE_CAD = 0;
83 #define RB_POWER_OFF 0x4321fedc
84 static const int RB_AUTOBOOT = 0x01234567;
87 #if (__GNU_LIBRARY__ > 5) || defined(__dietlibc__)
88 #include <sys/reboot.h>
89 #define init_reboot(magic) reboot(magic)
91 #define init_reboot(magic) reboot(0xfee1dead, 672274793, magic)
95 #define _PATH_STDPATH "/usr/bin:/bin:/usr/sbin:/sbin"
99 #if defined CONFIG_FEATURE_INIT_COREDUMPS
101 * When a file named CORE_ENABLE_FLAG_FILE exists, setrlimit is called
102 * before processes are spawned to set core file size as unlimited.
103 * This is for debugging only. Don't use this is production, unless
104 * you want core dumps lying about....
106 #define CORE_ENABLE_FLAG_FILE "/.init_enable_core"
107 #include <sys/resource.h>
108 #include <sys/time.h>
111 #define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
113 #if __GNU_LIBRARY__ > 5
114 #include <sys/kdaemon.h>
116 extern int bdflush (int func, long int data);
120 #define SHELL "/bin/sh" /* Default shell */
121 #define LOGIN_SHELL "-" SHELL /* Default login shell */
122 #define INITTAB "/etc/inittab" /* inittab file location */
124 #define INIT_SCRIPT "/etc/init.d/rcS" /* Default sysinit script. */
127 #define MAXENV 16 /* Number of env. vars */
128 //static const int MAXENV = 16; /* Number of env. vars */
129 static const int LOG = 0x1;
130 static const int CONSOLE = 0x2;
132 /* Allowed init action types */
143 /* A mapping between "inittab" action name strings and action type codes. */
144 typedef struct initActionType {
146 initActionEnum action;
149 static const struct initActionType actions[] = {
150 {"sysinit", SYSINIT},
151 {"respawn", RESPAWN},
152 {"askfirst", ASKFIRST},
155 {"ctrlaltdel", CTRLALTDEL},
156 {"shutdown", SHUTDOWN},
160 /* Set up a linked list of initActions, to be read from inittab */
161 typedef struct initActionTag initAction;
162 struct initActionTag {
167 initActionEnum action;
169 static initAction *initActionList = NULL;
172 static char *secondConsole = VC_2;
173 static char *thirdConsole = VC_3;
174 static char *fourthConsole = VC_4;
175 static char *log = VC_5;
176 static int kernelVersion = 0;
177 static char termType[32] = "TERM=linux";
178 static char console[32] = _PATH_CONSOLE;
180 static void delete_initAction(initAction * action);
182 static void loop_forever(void)
188 /* Print a message to the specified device.
189 * Device may be bitwise-or'd from LOG | CONSOLE */
190 static void message(int device, char *fmt, ...)
191 __attribute__ ((format (printf, 2, 3)));
192 static void message(int device, char *fmt, ...)
197 #ifdef CONFIG_SYSLOGD
199 /* Log the message to syslogd */
203 va_start(arguments, fmt);
204 vsnprintf(msg, sizeof(msg), fmt, arguments);
206 syslog_msg(LOG_USER, LOG_USER|LOG_INFO, msg);
209 static int log_fd = -1;
211 /* Take full control of the log tty, and never close it.
212 * It's mine, all mine! Muhahahaha! */
215 /* don't even try to log, because there is no such console */
217 /* log to main console instead */
219 } else if ((log_fd = device_open(log, O_RDWR|O_NDELAY)) < 0) {
221 fprintf(stderr, "Bummer, can't write to log on %s!\r\n", log);
226 if ((device & LOG) && (log_fd >= 0)) {
227 va_start(arguments, fmt);
228 vdprintf(log_fd, fmt, arguments);
233 if (device & CONSOLE) {
234 /* Always send console messages to /dev/console so people will see them. */
237 device_open(_PATH_CONSOLE,
238 O_WRONLY | O_NOCTTY | O_NDELAY)) >= 0) {
239 va_start(arguments, fmt);
240 vdprintf(fd, fmt, arguments);
244 fprintf(stderr, "Bummer, can't print: ");
245 va_start(arguments, fmt);
246 vfprintf(stderr, fmt, arguments);
252 /* Set terminal settings to reasonable defaults */
253 static void set_term(int fd)
259 /* set control chars */
260 tty.c_cc[VINTR] = 3; /* C-c */
261 tty.c_cc[VQUIT] = 28; /* C-\ */
262 tty.c_cc[VERASE] = 127; /* C-? */
263 tty.c_cc[VKILL] = 21; /* C-u */
264 tty.c_cc[VEOF] = 4; /* C-d */
265 tty.c_cc[VSTART] = 17; /* C-q */
266 tty.c_cc[VSTOP] = 19; /* C-s */
267 tty.c_cc[VSUSP] = 26; /* C-z */
269 /* use line dicipline 0 */
272 /* Make it be sane */
273 tty.c_cflag &= CBAUD|CBAUDEX|CSIZE|CSTOPB|PARENB|PARODD;
274 tty.c_cflag |= CREAD|HUPCL|CLOCAL;
278 tty.c_iflag = ICRNL | IXON | IXOFF;
281 tty.c_oflag = OPOST | ONLCR;
285 ISIG | ICANON | ECHO | ECHOE | ECHOK | ECHOCTL | ECHOKE | IEXTEN;
287 tcsetattr(fd, TCSANOW, &tty);
290 /* How much memory does this machine have?
291 Units are kBytes to avoid overflow on 4GB machines */
292 static int check_free_memory(void)
295 unsigned int result, u, s=10;
297 if (sysinfo(&info) != 0) {
298 perror_msg("Error checking free memory");
302 /* Kernels 2.0.x and 2.2.x return info.mem_unit==0 with values in bytes.
303 * Kernels 2.4.0 return info.mem_unit in bytes. */
306 while ( (u&1) == 0 && s > 0 ) { u>>=1; s--; }
307 result = (info.totalram>>s) + (info.totalswap>>s);
309 if (result < 0) result = INT_MAX;
313 static void console_init(void)
316 int tried_devcons = 0;
317 int tried_vtprimary = 0;
319 struct serial_struct sr;
322 if ((s = getenv("TERM")) != NULL) {
323 snprintf(termType, sizeof(termType) - 1, "TERM=%s", s);
326 if ((s = getenv("CONSOLE")) != NULL) {
327 safe_strncpy(console, s, sizeof(console));
330 /* sparc kernel supports console=tty[ab] parameter which is also
331 * passed to init, so catch it here */
332 else if ((s = getenv("console")) != NULL) {
333 /* remap tty[ab] to /dev/ttyS[01] */
334 if (strcmp(s, "ttya") == 0)
335 safe_strncpy(console, SC_0, sizeof(console));
336 else if (strcmp(s, "ttyb") == 0)
337 safe_strncpy(console, SC_1, sizeof(console));
341 /* 2.2 kernels: identify the real console backend and try to use it */
342 if (ioctl(0, TIOCGSERIAL, &sr) == 0) {
343 /* this is a serial console */
344 snprintf(console, sizeof(console) - 1, SC_FORMAT, sr.line);
345 } else if (ioctl(0, VT_GETSTATE, &vt) == 0) {
346 /* this is linux virtual tty */
347 snprintf(console, sizeof(console) - 1, VC_FORMAT, vt.v_active);
349 safe_strncpy(console, _PATH_CONSOLE, sizeof(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 safe_strncpy(console, _PATH_CONSOLE, sizeof(console));
361 /* Can't open selected console -- try vt1 */
362 if (!tried_vtprimary) {
364 safe_strncpy(console, VC_1, sizeof(console));
370 /* Perhaps we should panic here? */
371 safe_strncpy(console, "/dev/null", sizeof(console));
373 /* check for serial console and disable logging to tty5 & running a
375 if (ioctl(0, TIOCGSERIAL, &sr) == 0) {
377 secondConsole = NULL;
379 fourthConsole = NULL;
380 /* Force the TERM setting to vt102 for serial console --
381 * iff TERM is set to linux (the default) */
382 if (strcmp( termType, "TERM=linux" ) == 0)
383 safe_strncpy(termType, "TERM=vt102", sizeof(termType));
384 message(LOG | CONSOLE,
385 "serial console detected. Disabling virtual terminals.\r\n");
389 message(LOG, "console=%s\n", console);
392 static void fixup_argv(int argc, char **argv, char *new_argv0)
395 /* Fix up argv[0] to be certain we claim to be init */
396 len = strlen(argv[0]);
397 memset(argv[0], 0, len);
398 strncpy(argv[0], new_argv0, len);
400 /* Wipe argv[1]-argv[N] so they don't clutter the ps listing */
403 memset(argv[len], 0, strlen(argv[len]));
409 static pid_t run(char *command, char *terminal, int get_enter)
415 char *cmd[255], *cmdpath;
418 static const char press_enter[] =
420 #ifdef CUSTOMIZED_BANNER
421 #include CUSTOMIZED_BANNER
424 "\nPlease press Enter to activate this console. ";
425 char *environment[MAXENV+1] = {
428 "PATH=/usr/bin:/bin:/usr/sbin:/sbin",
434 /* inherit environment to the child, merging our values -andy */
435 for (i=0; environ[i]; i++) {
436 for (j=0; environment[j]; j++) {
437 s = strchr(environment[j], '=');
438 if (!strncmp(environ[i], environment[j], s - environment[j]))
441 if (!environment[j]) {
442 environment[j++] = environ[i];
443 environment[j] = NULL;
447 if ((pid = fork()) == 0) {
449 ioctl(0, TIOCNOTTY, 0);
455 /* Reset signal handlers set for parent process */
456 signal(SIGUSR1, SIG_DFL);
457 signal(SIGUSR2, SIG_DFL);
458 signal(SIGINT, SIG_DFL);
459 signal(SIGTERM, SIG_DFL);
460 signal(SIGHUP, SIG_DFL);
462 if ((fd = device_open(terminal, O_RDWR)) < 0) {
463 if (stat(terminal, &sb) != 0) {
464 message(LOG | CONSOLE, "device '%s' does not exist.\n",
468 message(LOG | CONSOLE, "Bummer, can't open %s\r\n", terminal);
474 ioctl(0, TIOCSCTTY, 1);
475 tcsetpgrp(0, getpgrp());
478 /* See if any special /bin/sh requiring characters are present */
479 if (strpbrk(command, "~`!$^&*()=|\\{}[];\"'<>?") != NULL) {
482 strcpy(buf, "exec ");
483 strncat(buf, command, sizeof(buf) - strlen(buf) - 1);
487 /* Convert command (char*) into cmd (char**, one word per string) */
488 for (tmpCmd = command, i = 0;
489 (tmpCmd = strsep(&command, " \t")) != NULL;) {
490 if (*tmpCmd != '\0') {
502 Interactive shells want to see a dash in argv[0]. This
503 typically is handled by login, argv will be setup this
504 way if a dash appears at the front of the command path
508 if (*cmdpath == '-') {
510 /* skip over the dash */
513 /* find the last component in the command pathname */
514 s = get_last_path_component(cmdpath);
516 /* make a new argv[0] */
517 if ((cmd[0] = malloc(strlen(s)+2)) == NULL) {
518 message(LOG | CONSOLE, "malloc failed");
526 if (get_enter == TRUE) {
528 * Save memory by not exec-ing anything large (like a shell)
529 * before the user wants it. This is critical if swap is not
530 * enabled and the system has low memory. Generally this will
531 * be run on the second virtual console, and the first will
532 * be allowed to start a shell or whatever an init script
536 message(LOG, "Waiting for enter to start '%s' (pid %d, console %s)\r\n",
537 cmd[0], getpid(), terminal);
539 write(fileno(stdout), press_enter, sizeof(press_enter) - 1);
544 /* Log the process name and args */
545 message(LOG, "Starting pid %d, console %s: '%s'\r\n",
546 getpid(), terminal, command);
549 #if defined CONFIG_FEATURE_INIT_COREDUMPS
550 if (stat (CORE_ENABLE_FLAG_FILE, &sb) == 0) {
552 limit.rlim_cur = RLIM_INFINITY;
553 limit.rlim_max = RLIM_INFINITY;
554 setrlimit(RLIMIT_CORE, &limit);
558 /* Now run it. The new program will take over this PID,
559 * so nothing further in init.c should be run. */
560 execve(cmdpath, cmd, environment);
562 /* We're still here? Some error happened. */
563 message(LOG | CONSOLE, "Bummer, could not run '%s': %s\n", cmdpath,
570 static int waitfor(char *command, char *terminal, int get_enter)
573 int pid = run(command, terminal, get_enter);
576 wpid = wait(&status);
577 if (wpid > 0 && wpid != pid) {
586 /* Make sure there is enough memory to do something useful. *
587 * Calls "swapon -a" if needed so be sure /etc/fstab is present... */
588 static void check_memory(void)
592 if (check_free_memory() > 1000)
595 if (stat("/etc/fstab", &statBuf) == 0) {
596 /* swapon -a requires /proc typically */
597 waitfor("mount proc /proc -t proc", console, FALSE);
598 /* Try to turn on swap */
599 waitfor("swapon -a", console, FALSE);
600 if (check_free_memory() < 1000)
608 "Sorry, your computer does not have enough memory.\r\n");
612 /* Run all commands to be run right before halt/reboot */
613 static void run_actions(initActionEnum action)
616 for (a = initActionList; a; a = tmp) {
618 if (a->action == action) {
619 waitfor(a->process, a->console, FALSE);
620 delete_initAction(a);
627 static void shutdown_system(void)
630 /* first disable our SIGHUP signal */
631 signal(SIGHUP, SIG_DFL);
633 /* Allow Ctrl-Alt-Del to reboot system. */
634 init_reboot(RB_ENABLE_CAD);
636 message(CONSOLE|LOG, "\r\nThe system is going down NOW !!\r\n");
639 /* Send signals to every process _except_ pid 1 */
640 message(CONSOLE|LOG, "Sending SIGTERM to all processes.\r\n");
645 message(CONSOLE|LOG, "Sending SIGKILL to all processes.\r\n");
649 /* run everything to be run at "shutdown" */
650 run_actions(SHUTDOWN);
653 if (kernelVersion > 0 && kernelVersion <= KERNEL_VERSION(2,2,11)) {
654 /* bdflush, kupdate not needed for kernels >2.2.11 */
660 static void halt_signal(int sig)
664 "The system is halted. Press %s or turn off power\r\n",
665 (secondConsole == NULL) /* serial console */
666 ? "Reset" : "CTRL-ALT-DEL");
669 /* allow time for last message to reach serial console */
672 if (sig == SIGUSR2 && kernelVersion >= KERNEL_VERSION(2,2,0))
673 init_reboot(RB_POWER_OFF);
675 init_reboot(RB_HALT_SYSTEM);
680 static void reboot_signal(int sig)
683 message(CONSOLE|LOG, "Please stand by while rebooting the system.\r\n");
686 /* allow time for last message to reach serial console */
689 init_reboot(RB_AUTOBOOT);
694 static void ctrlaltdel_signal(int sig)
696 run_actions(CTRLALTDEL);
699 #endif /* ! DEBUG_INIT */
701 static void new_initAction(initActionEnum action, char *process, char *cons)
703 initAction *newAction;
704 #ifdef CONFIG_FEATURE_INIT_NORMAL_ORDER
711 /* If BusyBox detects that a serial console is in use,
712 * then entries not refering to the console or null devices will _not_ be run.
713 * The exception to this rule is the null device.
715 if (secondConsole == NULL && strcmp(cons, console)
716 && strcmp(cons, "/dev/null"))
718 if (strcmp(cons, "/dev/null") == 0 && action == ASKFIRST)
721 newAction = calloc((size_t) (1), sizeof(initAction));
723 message(LOG | CONSOLE, "Memory allocation failure\n");
726 #ifdef CONFIG_FEATURE_INIT_NORMAL_ORDER
727 for (a = initActionList; a && a->nextPtr; a = a->nextPtr) ;
729 a->nextPtr = newAction;
731 initActionList = newAction;
734 newAction->nextPtr = initActionList;
735 initActionList = newAction;
737 strncpy(newAction->process, process, 255);
738 newAction->action = action;
739 strncpy(newAction->console, cons, 255);
741 // message(LOG|CONSOLE, "process='%s' action='%d' console='%s'\n",
742 // newAction->process, newAction->action, newAction->console);
745 static void delete_initAction(initAction * action)
747 initAction *a, *b = NULL;
749 for (a = initActionList; a; b = a, a = a->nextPtr) {
752 initActionList = a->nextPtr;
754 b->nextPtr = a->nextPtr;
762 /* NOTE that if CONFIG_FEATURE_USE_INITTAB is NOT defined,
763 * then parse_inittab() simply adds in some default
764 * actions(i.e., runs INIT_SCRIPT and then starts a pair
765 * of "askfirst" shells). If CONFIG_FEATURE_USE_INITTAB
766 * _is_ defined, but /etc/inittab is missing, this
767 * results in the same set of default behaviors.
769 static void parse_inittab(void)
771 #ifdef CONFIG_FEATURE_USE_INITTAB
773 char buf[256], lineAsRead[256], tmpConsole[256];
774 char *id, *runlev, *action, *process, *eol;
775 const struct initActionType *a = actions;
779 file = fopen(INITTAB, "r");
781 /* No inittab file -- set up some default behavior */
783 /* Reboot on Ctrl-Alt-Del */
784 new_initAction(CTRLALTDEL, "/sbin/reboot", console);
785 #ifdef CONFIG_FEATURE_INIT_NORMAL_ORDER
786 /* Umount all filesystems on halt/reboot */
787 new_initAction(SHUTDOWN, "/bin/umount -a -r", console);
788 /* Swapoff on halt/reboot */
789 new_initAction(SHUTDOWN, "/sbin/swapoff -a", console);
791 /* Swapoff on halt/reboot */
792 new_initAction(SHUTDOWN, "/sbin/swapoff -a", console);
793 /* Umount all filesystems on halt/reboot */
794 new_initAction(SHUTDOWN, "/bin/umount -a -r", console);
796 /* Askfirst shell on tty1 */
797 new_initAction(ASKFIRST, LOGIN_SHELL, console);
798 /* Askfirst shell on tty2 */
799 if (secondConsole != NULL)
800 new_initAction(ASKFIRST, LOGIN_SHELL, secondConsole);
801 /* Askfirst shell on tty3 */
802 if (thirdConsole != NULL)
803 new_initAction(ASKFIRST, LOGIN_SHELL, thirdConsole);
804 /* Askfirst shell on tty4 */
805 if (fourthConsole != NULL)
806 new_initAction(ASKFIRST, LOGIN_SHELL, fourthConsole);
808 new_initAction(SYSINIT, INIT_SCRIPT, console);
811 #ifdef CONFIG_FEATURE_USE_INITTAB
814 while (fgets(buf, 255, file) != NULL) {
816 /* Skip leading spaces */
817 for (id = buf; *id == ' ' || *id == '\t'; id++);
819 /* Skip the line if it's a comment */
820 if (*id == '#' || *id == '\n')
823 /* Trim the trailing \n */
824 eol = strrchr(id, '\n');
828 /* Keep a copy around for posterity's sake (and error msgs) */
829 strcpy(lineAsRead, buf);
831 /* Separate the ID field from the runlevels */
832 runlev = strchr(id, ':');
833 if (runlev == NULL || *(runlev + 1) == '\0') {
834 message(LOG | CONSOLE, "Bad inittab entry: %s\n", lineAsRead);
841 /* Separate the runlevels from the action */
842 action = strchr(runlev, ':');
843 if (action == NULL || *(action + 1) == '\0') {
844 message(LOG | CONSOLE, "Bad inittab entry: %s\n", lineAsRead);
851 /* Separate the action from the process */
852 process = strchr(action, ':');
853 if (process == NULL || *(process + 1) == '\0') {
854 message(LOG | CONSOLE, "Bad inittab entry: %s\n", lineAsRead);
861 /* Ok, now process it */
863 while (a->name != 0) {
864 if (strcmp(a->name, action) == 0) {
866 strcpy(tmpConsole, "/dev/");
867 strncat(tmpConsole, id, 200);
870 new_initAction(a->action, process, id);
878 /* Choke on an unknown action */
879 message(LOG | CONSOLE, "Bad inittab entry: %s\n", lineAsRead);
883 #endif /* CONFIG_FEATURE_USE_INITTAB */
888 extern int init_main(int argc, char **argv)
895 /* Expect to be invoked as init with PID=1 or be invoked as linuxrc */
897 #ifdef CONFIG_FEATURE_INITRD
898 && strstr(applet_name, "linuxrc") == NULL
904 /* Set up sig handlers -- be sure to
905 * clear all of these in run() */
906 signal(SIGUSR1, halt_signal);
907 signal(SIGUSR2, halt_signal);
908 signal(SIGINT, ctrlaltdel_signal);
909 signal(SIGTERM, reboot_signal);
911 /* Turn off rebooting via CTL-ALT-DEL -- we get a
912 * SIGINT on CAD so we can shut things down gracefully... */
913 init_reboot(RB_DISABLE_CAD);
916 /* Figure out what kernel this is running */
917 kernelVersion = get_kernel_revision();
919 /* Figure out where the default console should be */
922 /* Close whatever files are open, and reset the console. */
930 /* Make sure PATH is set to something sane */
931 putenv("PATH="_PATH_STDPATH);
936 #if ! defined CONFIG_FEATURE_EXTRA_QUIET
940 "init started: %s\r\n", full_version);
943 #if ! defined CONFIG_FEATURE_EXTRA_QUIET
947 "init(%d) started: %s\r\n", getpid(), full_version);
951 /* Make sure there is enough memory to do something useful. */
954 /* Check if we are supposed to be in single user mode */
955 if (argc > 1 && (!strcmp(argv[1], "single") ||
956 !strcmp(argv[1], "-s") || !strcmp(argv[1], "1"))) {
957 /* Ask first then start a shell on tty2-4 */
958 if (secondConsole != NULL)
959 new_initAction(ASKFIRST, LOGIN_SHELL, secondConsole);
960 if (thirdConsole != NULL)
961 new_initAction(ASKFIRST, LOGIN_SHELL, thirdConsole);
962 if (fourthConsole != NULL)
963 new_initAction(ASKFIRST, LOGIN_SHELL, fourthConsole);
964 /* Start a shell on tty1 */
965 new_initAction(RESPAWN, LOGIN_SHELL, console);
967 /* Not in single user mode -- see what inittab says */
969 /* NOTE that if CONFIG_FEATURE_USE_INITTAB is NOT defined,
970 * then parse_inittab() simply adds in some default
971 * actions(i.e., runs INIT_SCRIPT and then starts a pair
972 * of "askfirst" shells */
976 /* Make the command line just say "init" -- thats all, nothing else */
977 fixup_argv(argc, argv, "init");
979 /* Now run everything that needs to be run */
981 /* First run the sysinit command */
982 run_actions(SYSINIT);
983 /* Next run anything that wants to block */
985 /* Next run anything to be run only once */
986 for (a = initActionList; a; a = tmp) {
988 if (a->action == ONCE) {
989 run(a->process, a->console, FALSE);
990 /* Now remove the "once" entry from the list */
991 delete_initAction(a);
994 /* If there is nothing else to do, stop */
995 if (initActionList == NULL) {
996 message(LOG | CONSOLE,
997 "No more tasks for init -- sleeping forever.\n");
1001 /* Now run the looping stuff for the rest of forever */
1003 for (a = initActionList; a; a = a->nextPtr) {
1004 /* Only run stuff with pid==0. If they have
1005 * a pid, that means they are still running */
1007 switch (a->action) {
1009 /* run the respawn stuff */
1010 a->pid = run(a->process, a->console, FALSE);
1013 /* run the askfirst stuff */
1014 a->pid = run(a->process, a->console, TRUE);
1016 /* silence the compiler's incessant whining */
1022 /* Wait for a child process to exit */
1023 wpid = wait(&status);
1025 /* Find out who died and clean up their corpse */
1026 for (a = initActionList; a; a = a->nextPtr) {
1027 if (a->pid == wpid) {
1030 "Process '%s' (pid %d) exited. Scheduling it for restart.\n",
1041 c-file-style: "linux"