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 #define bb_need_full_version
47 #define BB_DECLARE_EXTERN
50 # include <sys/syslog.h>
54 /* From <linux/vt.h> */
56 unsigned short v_active; /* active vt */
57 unsigned short v_signal; /* signal to send */
58 unsigned short v_state; /* vt bitmask */
60 static const int VT_GETSTATE = 0x5603; /* get global vt state info */
62 /* From <linux/serial.h> */
63 struct serial_struct {
72 unsigned short close_delay;
73 char reserved_char[2];
75 unsigned short closing_wait; /* time to wait before closing */
76 unsigned short closing_wait2; /* no longer used... */
82 #ifndef RB_HALT_SYSTEM
83 static const int RB_HALT_SYSTEM = 0xcdef0123;
84 static const int RB_ENABLE_CAD = 0x89abcdef;
85 static const int RB_DISABLE_CAD = 0;
86 #define RB_POWER_OFF 0x4321fedc
87 static const int RB_AUTOBOOT = 0x01234567;
88 #if defined(__GLIBC__) || defined (__UCLIBC__)
89 #include <sys/reboot.h>
90 #define init_reboot(magic) reboot(magic)
92 #define init_reboot(magic) reboot(0xfee1dead, 672274793, magic)
97 #define _PATH_STDPATH "/usr/bin:/bin:/usr/sbin:/sbin"
101 #if defined BB_FEATURE_INIT_COREDUMPS
103 * When a file named CORE_ENABLE_FLAG_FILE exists, setrlimit is called
104 * before processes are spawned to set core file size as unlimited.
105 * This is for debugging only. Don't use this is production, unless
106 * you want core dumps lying about....
108 #define CORE_ENABLE_FLAG_FILE "/.init_enable_core"
109 #include <sys/resource.h>
110 #include <sys/time.h>
113 #define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
115 #if defined(__GLIBC__)
116 #include <sys/kdaemon.h>
118 #include <sys/syscall.h>
119 #include <linux/unistd.h>
120 static _syscall2(int, bdflush, int, func, int, data);
121 #endif /* __GLIBC__ */
124 #define VT_PRIMARY "/dev/tty1" /* Primary virtual console */
125 #define VT_SECONDARY "/dev/tty2" /* Virtual console */
126 #define VT_THIRD "/dev/tty3" /* Virtual console */
127 #define VT_FOURTH "/dev/tty4" /* Virtual console */
128 #define VT_LOG "/dev/tty5" /* Virtual console */
129 #define SERIAL_CON0 "/dev/ttyS0" /* Primary serial console */
130 #define SERIAL_CON1 "/dev/ttyS1" /* Serial console */
131 #define SHELL "-/bin/sh" /* Default shell */
132 #define INITTAB "/etc/inittab" /* inittab file location */
134 #define INIT_SCRIPT "/etc/init.d/rcS" /* Default sysinit script. */
137 #define MAXENV 16 /* Number of env. vars */
138 //static const int MAXENV = 16; /* Number of env. vars */
139 static const int LOG = 0x1;
140 static const int CONSOLE = 0x2;
142 /* Allowed init action types */
153 /* A mapping between "inittab" action name strings and action type codes. */
154 typedef struct initActionType {
156 initActionEnum action;
159 static const struct initActionType actions[] = {
160 {"sysinit", SYSINIT},
161 {"respawn", RESPAWN},
162 {"askfirst", ASKFIRST},
165 {"ctrlaltdel", CTRLALTDEL},
166 {"shutdown", SHUTDOWN},
170 /* Set up a linked list of initActions, to be read from inittab */
171 typedef struct initActionTag initAction;
172 struct initActionTag {
177 initActionEnum action;
179 static initAction *initActionList = NULL;
182 static char *secondConsole = VT_SECONDARY;
183 static char *thirdConsole = VT_THIRD;
184 static char *fourthConsole = VT_FOURTH;
185 static char *log = VT_LOG;
186 static int kernelVersion = 0;
187 static char termType[32] = "TERM=linux";
188 static char console[32] = _PATH_CONSOLE;
190 static void delete_initAction(initAction * action);
194 /* Print a message to the specified device.
195 * Device may be bitwise-or'd from LOG | CONSOLE */
196 static void message(int device, char *fmt, ...)
197 __attribute__ ((format (printf, 2, 3)));
198 static void message(int device, char *fmt, ...)
205 /* Log the message to syslogd */
209 va_start(arguments, fmt);
210 vsnprintf(msg, sizeof(msg), fmt, arguments);
212 openlog(applet_name, 0, LOG_USER);
213 syslog(LOG_USER|LOG_INFO, msg);
217 static int log_fd = -1;
219 /* Take full control of the log tty, and never close it.
220 * It's mine, all mine! Muhahahaha! */
223 /* don't even try to log, because there is no such console */
225 /* log to main console instead */
227 } else if ((log_fd = device_open(log, O_RDWR|O_NDELAY)) < 0) {
229 fprintf(stderr, "Bummer, can't write to log on %s!\r\n", log);
234 if ((device & LOG) && (log_fd >= 0)) {
235 va_start(arguments, fmt);
236 vdprintf(log_fd, fmt, arguments);
241 if (device & CONSOLE) {
242 /* Always send console messages to /dev/console so people will see them. */
245 device_open(_PATH_CONSOLE,
246 O_WRONLY | O_NOCTTY | O_NDELAY)) >= 0) {
247 va_start(arguments, fmt);
248 vdprintf(fd, fmt, arguments);
252 fprintf(stderr, "Bummer, can't print: ");
253 va_start(arguments, fmt);
254 vfprintf(stderr, fmt, arguments);
260 /* Set terminal settings to reasonable defaults */
261 static void set_term(int fd)
267 /* set control chars */
268 tty.c_cc[VINTR] = 3; /* C-c */
269 tty.c_cc[VQUIT] = 28; /* C-\ */
270 tty.c_cc[VERASE] = 127; /* C-? */
271 tty.c_cc[VKILL] = 21; /* C-u */
272 tty.c_cc[VEOF] = 4; /* C-d */
273 tty.c_cc[VSTART] = 17; /* C-q */
274 tty.c_cc[VSTOP] = 19; /* C-s */
275 tty.c_cc[VSUSP] = 26; /* C-z */
277 /* use line dicipline 0 */
280 /* Make it be sane */
281 tty.c_cflag &= CBAUD|CBAUDEX|CSIZE|CSTOPB|PARENB|PARODD;
282 tty.c_cflag |= HUPCL|CLOCAL;
285 tty.c_iflag = ICRNL | IXON | IXOFF;
288 tty.c_oflag = OPOST | ONLCR;
292 ISIG | ICANON | ECHO | ECHOE | ECHOK | ECHOCTL | ECHOKE | IEXTEN;
294 tcsetattr(fd, TCSANOW, &tty);
297 /* How much memory does this machine have?
298 Units are kBytes to avoid overflow on 4GB machines */
299 static int check_free_memory()
302 unsigned int result, u, s=10;
304 if (sysinfo(&info) != 0) {
305 perror_msg("Error checking free memory");
309 /* Kernels 2.0.x and 2.2.x return info.mem_unit==0 with values in bytes.
310 * Kernels 2.4.0 return info.mem_unit in bytes. */
313 while ( (u&1) == 0 && s > 0 ) { u>>=1; s--; }
314 result = (info.totalram>>s) + (info.totalswap>>s);
316 if (result < 0) result = INT_MAX;
320 static void console_init()
323 int tried_devcons = 0;
324 int tried_vtprimary = 0;
326 struct serial_struct sr;
329 if ((s = getenv("TERM")) != NULL) {
330 snprintf(termType, sizeof(termType) - 1, "TERM=%s", s);
333 if ((s = getenv("CONSOLE")) != NULL) {
334 snprintf(console, sizeof(console) - 1, "%s", s);
337 /* sparc kernel supports console=tty[ab] parameter which is also
338 * passed to init, so catch it here */
339 else if ((s = getenv("console")) != NULL) {
340 /* remap tty[ab] to /dev/ttyS[01] */
341 if (strcmp(s, "ttya") == 0)
342 snprintf(console, sizeof(console) - 1, "%s", SERIAL_CON0);
343 else if (strcmp(s, "ttyb") == 0)
344 snprintf(console, sizeof(console) - 1, "%s", SERIAL_CON1);
348 /* 2.2 kernels: identify the real console backend and try to use it */
349 if (ioctl(0, TIOCGSERIAL, &sr) == 0) {
350 /* this is a serial console */
351 snprintf(console, sizeof(console) - 1, "/dev/ttyS%d", sr.line);
352 } else if (ioctl(0, VT_GETSTATE, &vt) == 0) {
353 /* this is linux virtual tty */
354 snprintf(console, sizeof(console) - 1, "/dev/tty%d",
357 snprintf(console, sizeof(console) - 1, "%s", _PATH_CONSOLE);
362 while ((fd = open(console, O_RDONLY | O_NONBLOCK)) < 0) {
363 /* Can't open selected console -- try /dev/console */
364 if (!tried_devcons) {
366 snprintf(console, sizeof(console) - 1, "%s", _PATH_CONSOLE);
369 /* Can't open selected console -- try vt1 */
370 if (!tried_vtprimary) {
372 snprintf(console, sizeof(console) - 1, "%s", VT_PRIMARY);
378 /* Perhaps we should panic here? */
379 snprintf(console, sizeof(console) - 1, "/dev/null");
381 /* check for serial console and disable logging to tty5 & running a
383 if (ioctl(0, TIOCGSERIAL, &sr) == 0) {
385 secondConsole = NULL;
387 fourthConsole = NULL;
388 /* Force the TERM setting to vt102 for serial console --
389 * iff TERM is set to linux (the default) */
390 if (strcmp( termType, "TERM=linux" ) == 0)
391 snprintf(termType, sizeof(termType) - 1, "TERM=vt102");
392 message(LOG | CONSOLE,
393 "serial console detected. Disabling virtual terminals.\r\n");
397 message(LOG, "console=%s\n", console);
400 static void fixup_argv(int argc, char **argv, char *new_argv0)
403 /* Fix up argv[0] to be certain we claim to be init */
404 len = strlen(argv[0]);
405 memset(argv[0], 0, len);
406 strncpy(argv[0], new_argv0, len);
408 /* Wipe argv[1]-argv[N] so they don't clutter the ps listing */
411 memset(argv[len], 0, strlen(argv[len]));
417 static pid_t run(char *command, char *terminal, int get_enter)
423 char *cmd[255], *cmdpath;
426 static const char press_enter[] =
428 #ifdef CUSTOMIZED_BANNER
429 #include CUSTOMIZED_BANNER
432 "\nPlease press Enter to activate this console. ";
433 char *environment[MAXENV+1] = {
436 "PATH=/usr/bin:/bin:/usr/sbin:/sbin",
442 /* inherit environment to the child, merging our values -andy */
443 for (i=0; environ[i]; i++) {
444 for (j=0; environment[j]; j++) {
445 s = strchr(environment[j], '=');
446 if (!strncmp(environ[i], environment[j], s - environment[j]))
449 if (!environment[j]) {
450 environment[j++] = environ[i];
451 environment[j] = NULL;
455 if ((pid = fork()) == 0) {
457 ioctl(0, TIOCNOTTY, 0);
463 /* Reset signal handlers set for parent process */
464 signal(SIGUSR1, SIG_DFL);
465 signal(SIGUSR2, SIG_DFL);
466 signal(SIGINT, SIG_DFL);
467 signal(SIGTERM, SIG_DFL);
468 signal(SIGHUP, SIG_DFL);
470 if ((fd = device_open(terminal, O_RDWR)) < 0) {
471 if (stat(terminal, &sb) != 0) {
472 message(LOG | CONSOLE, "device '%s' does not exist.\n",
476 message(LOG | CONSOLE, "Bummer, can't open %s\r\n", terminal);
482 ioctl(0, TIOCSCTTY, 1);
483 tcsetpgrp(0, getpgrp());
486 /* See if any special /bin/sh requiring characters are present */
487 if (strpbrk(command, "~`!$^&*()=|\\{}[];\"'<>?") != NULL) {
490 strcpy(buf, "exec ");
491 strncat(buf, command, sizeof(buf) - strlen(buf) - 1);
495 /* Convert command (char*) into cmd (char**, one word per string) */
496 for (tmpCmd = command, i = 0;
497 (tmpCmd = strsep(&command, " \t")) != NULL;) {
498 if (*tmpCmd != '\0') {
510 Interactive shells want to see a dash in argv[0]. This
511 typically is handled by login, argv will be setup this
512 way if a dash appears at the front of the command path
516 if (*cmdpath == '-') {
518 /* skip over the dash */
521 /* find the last component in the command pathname */
522 s = get_last_path_component(cmdpath);
524 /* make a new argv[0] */
525 if ((cmd[0] = malloc(strlen(s)+2)) == NULL) {
526 message(LOG | CONSOLE, "malloc failed");
534 if (get_enter == TRUE) {
536 * Save memory by not exec-ing anything large (like a shell)
537 * before the user wants it. This is critical if swap is not
538 * enabled and the system has low memory. Generally this will
539 * be run on the second virtual console, and the first will
540 * be allowed to start a shell or whatever an init script
544 message(LOG, "Waiting for enter to start '%s' (pid %d, console %s)\r\n",
545 cmd[0], getpid(), terminal);
547 write(fileno(stdout), press_enter, sizeof(press_enter) - 1);
552 /* Log the process name and args */
553 message(LOG, "Starting pid %d, console %s: '%s'\r\n",
554 getpid(), terminal, command);
557 #if defined BB_FEATURE_INIT_COREDUMPS
558 if (stat (CORE_ENABLE_FLAG_FILE, &sb) == 0) {
560 limit.rlim_cur = RLIM_INFINITY;
561 limit.rlim_max = RLIM_INFINITY;
562 setrlimit(RLIMIT_CORE, &limit);
566 /* Now run it. The new program will take over this PID,
567 * so nothing further in init.c should be run. */
568 execve(cmdpath, cmd, environment);
570 /* We're still here? Some error happened. */
571 message(LOG | CONSOLE, "Bummer, could not run '%s': %s\n", cmdpath,
578 static int waitfor(char *command, char *terminal, int get_enter)
581 int pid = run(command, terminal, get_enter);
584 wpid = wait(&status);
585 if (wpid > 0 && wpid != pid) {
594 /* Make sure there is enough memory to do something useful. *
595 * Calls "swapon -a" if needed so be sure /etc/fstab is present... */
596 static void check_memory()
600 if (check_free_memory() > 1000)
603 if (stat("/etc/fstab", &statBuf) == 0) {
604 /* swapon -a requires /proc typically */
605 waitfor("mount proc /proc -t proc", console, FALSE);
606 /* Try to turn on swap */
607 waitfor("swapon -a", console, FALSE);
608 if (check_free_memory() < 1000)
616 "Sorry, your computer does not have enough memory.\r\n");
621 /* Run all commands to be run right before halt/reboot */
622 static void run_actions(initActionEnum action)
625 for (a = initActionList; a; a = tmp) {
627 if (a->action == action) {
628 waitfor(a->process, a->console, FALSE);
629 delete_initAction(a);
636 static void shutdown_system(void)
639 /* first disable our SIGHUP signal */
640 signal(SIGHUP, SIG_DFL);
642 /* Allow Ctrl-Alt-Del to reboot system. */
643 init_reboot(RB_ENABLE_CAD);
645 message(CONSOLE|LOG, "\r\nThe system is going down NOW !!\r\n");
648 /* Send signals to every process _except_ pid 1 */
649 message(CONSOLE|LOG, "Sending SIGTERM to all processes.\r\n");
654 message(CONSOLE|LOG, "Sending SIGKILL to all processes.\r\n");
658 /* run everything to be run at "ctrlaltdel" */
659 run_actions(SHUTDOWN);
662 if (kernelVersion > 0 && kernelVersion <= KERNEL_VERSION(2,2,11)) {
663 /* bdflush, kupdate not needed for kernels >2.2.11 */
669 static void halt_signal(int sig)
673 "The system is halted. Press %s or turn off power\r\n",
674 (secondConsole == NULL) /* serial console */
675 ? "Reset" : "CTRL-ALT-DEL");
678 /* allow time for last message to reach serial console */
681 if (sig == SIGUSR2 && kernelVersion >= KERNEL_VERSION(2,2,0))
682 init_reboot(RB_POWER_OFF);
684 init_reboot(RB_HALT_SYSTEM);
688 static void reboot_signal(int sig)
691 message(CONSOLE|LOG, "Please stand by while rebooting the system.\r\n");
694 /* allow time for last message to reach serial console */
697 init_reboot(RB_AUTOBOOT);
701 static void ctrlaltdel_signal(int sig)
703 run_actions(CTRLALTDEL);
706 #endif /* ! DEBUG_INIT */
708 static void new_initAction(initActionEnum action, char *process, char *cons)
710 initAction *newAction;
715 /* If BusyBox detects that a serial console is in use,
716 * then entries not refering to the console or null devices will _not_ be run.
717 * The exception to this rule is the null device.
719 if (secondConsole == NULL && strcmp(cons, console)
720 && strcmp(cons, "/dev/null"))
723 newAction = calloc((size_t) (1), sizeof(initAction));
725 message(LOG | CONSOLE, "Memory allocation failure\n");
729 newAction->nextPtr = initActionList;
730 initActionList = newAction;
731 strncpy(newAction->process, process, 255);
732 newAction->action = action;
733 strncpy(newAction->console, cons, 255);
735 // message(LOG|CONSOLE, "process='%s' action='%d' console='%s'\n",
736 // newAction->process, newAction->action, newAction->console);
739 static void delete_initAction(initAction * action)
741 initAction *a, *b = NULL;
743 for (a = initActionList; a; b = a, a = a->nextPtr) {
746 initActionList = a->nextPtr;
748 b->nextPtr = a->nextPtr;
756 /* NOTE that if BB_FEATURE_USE_INITTAB is NOT defined,
757 * then parse_inittab() simply adds in some default
758 * actions(i.e runs INIT_SCRIPT and then starts a pair
759 * of "askfirst" shells). If BB_FEATURE_USE_INITTAB
760 * _is_ defined, but /etc/inittab is missing, this
761 * results in the same set of default behaviors.
763 static void parse_inittab(void)
765 #ifdef BB_FEATURE_USE_INITTAB
767 char buf[256], lineAsRead[256], tmpConsole[256];
768 char *id, *runlev, *action, *process, *eol;
769 const struct initActionType *a = actions;
773 file = fopen(INITTAB, "r");
775 /* No inittab file -- set up some default behavior */
777 /* Reboot on Ctrl-Alt-Del */
778 new_initAction(CTRLALTDEL, "/sbin/reboot", console);
779 /* Swapoff on halt/reboot */
780 new_initAction(SHUTDOWN, "/sbin/swapoff -a", console);
781 /* Umount all filesystems on halt/reboot */
782 new_initAction(SHUTDOWN, "/bin/umount -a -r", console);
783 /* Askfirst shell on tty1 */
784 new_initAction(ASKFIRST, SHELL, console);
785 /* Askfirst shell on tty2 */
786 if (secondConsole != NULL)
787 new_initAction(ASKFIRST, SHELL, secondConsole);
788 /* Askfirst shell on tty3 */
789 if (thirdConsole != NULL)
790 new_initAction(ASKFIRST, SHELL, thirdConsole);
791 /* Askfirst shell on tty4 */
792 if (fourthConsole != NULL)
793 new_initAction(ASKFIRST, SHELL, fourthConsole);
795 new_initAction(SYSINIT, INIT_SCRIPT, console);
798 #ifdef BB_FEATURE_USE_INITTAB
801 while (fgets(buf, 255, file) != NULL) {
803 /* Skip leading spaces */
804 for (id = buf; *id == ' ' || *id == '\t'; id++);
806 /* Skip the line if it's a comment */
807 if (*id == '#' || *id == '\n')
810 /* Trim the trailing \n */
811 eol = strrchr(id, '\n');
815 /* Keep a copy around for posterity's sake (and error msgs) */
816 strcpy(lineAsRead, buf);
818 /* Separate the ID field from the runlevels */
819 runlev = strchr(id, ':');
820 if (runlev == NULL || *(runlev + 1) == '\0') {
821 message(LOG | CONSOLE, "Bad inittab entry: %s\n", lineAsRead);
828 /* Separate the runlevels from the action */
829 action = strchr(runlev, ':');
830 if (action == NULL || *(action + 1) == '\0') {
831 message(LOG | CONSOLE, "Bad inittab entry: %s\n", lineAsRead);
838 /* Separate the action from the process */
839 process = strchr(action, ':');
840 if (process == NULL || *(process + 1) == '\0') {
841 message(LOG | CONSOLE, "Bad inittab entry: %s\n", lineAsRead);
848 /* Ok, now process it */
850 while (a->name != 0) {
851 if (strcmp(a->name, action) == 0) {
853 strcpy(tmpConsole, "/dev/");
854 strncat(tmpConsole, id, 200);
857 new_initAction(a->action, process, id);
865 /* Choke on an unknown action */
866 message(LOG | CONSOLE, "Bad inittab entry: %s\n", lineAsRead);
870 #endif /* BB_FEATURE_USE_INITTAB */
875 extern int init_main(int argc, char **argv)
882 /* Expect to be invoked as init with PID=1 or be invoked as linuxrc */
884 #ifdef BB_FEATURE_LINUXRC
885 && strstr(applet_name, "linuxrc") == NULL
891 /* Set up sig handlers -- be sure to
892 * clear all of these in run() */
893 signal(SIGUSR1, halt_signal);
894 signal(SIGUSR2, halt_signal);
895 signal(SIGINT, ctrlaltdel_signal);
896 signal(SIGTERM, reboot_signal);
898 /* Turn off rebooting via CTL-ALT-DEL -- we get a
899 * SIGINT on CAD so we can shut things down gracefully... */
900 init_reboot(RB_DISABLE_CAD);
903 /* Figure out what kernel this is running */
904 kernelVersion = get_kernel_revision();
906 /* Figure out where the default console should be */
909 /* Close whatever files are open, and reset the console. */
917 /* Make sure PATH is set to something sane */
918 putenv("PATH="_PATH_STDPATH);
923 #if ! defined BB_FEATURE_EXTRA_QUIET
927 "init started: %s\r\n", full_version);
930 #if ! defined BB_FEATURE_EXTRA_QUIET
934 "init(%d) started: %s\r\n", getpid(), full_version);
938 /* Make sure there is enough memory to do something useful. */
941 /* Check if we are supposed to be in single user mode */
942 if (argc > 1 && (!strcmp(argv[1], "single") ||
943 !strcmp(argv[1], "-s") || !strcmp(argv[1], "1"))) {
944 /* Ask first then start a shell on tty2-4 */
945 if (secondConsole != NULL)
946 new_initAction(ASKFIRST, SHELL, secondConsole);
947 if (thirdConsole != NULL)
948 new_initAction(ASKFIRST, SHELL, thirdConsole);
949 if (fourthConsole != NULL)
950 new_initAction(ASKFIRST, SHELL, fourthConsole);
951 /* Start a shell on tty1 */
952 new_initAction(RESPAWN, SHELL, console);
954 /* Not in single user mode -- see what inittab says */
956 /* NOTE that if BB_FEATURE_USE_INITTAB is NOT defined,
957 * then parse_inittab() simply adds in some default
958 * actions(i.e runs INIT_SCRIPT and then starts a pair
959 * of "askfirst" shells */
963 /* Make the command line just say "init" -- thats all, nothing else */
964 fixup_argv(argc, argv, "init");
966 /* Now run everything that needs to be run */
968 /* First run the sysinit command */
969 for (a = initActionList; a; a = tmp) {
971 if (a->action == SYSINIT) {
972 waitfor(a->process, a->console, FALSE);
973 /* Now remove the "sysinit" entry from the list */
974 delete_initAction(a);
977 /* Next run anything that wants to block */
978 for (a = initActionList; a; a = tmp) {
980 if (a->action == WAIT) {
981 waitfor(a->process, a->console, FALSE);
982 /* Now remove the "wait" entry from the list */
983 delete_initAction(a);
986 /* Next run anything to be run only once */
987 for (a = initActionList; a; a = tmp) {
989 if (a->action == ONCE) {
990 run(a->process, a->console, FALSE);
991 /* Now remove the "once" entry from the list */
992 delete_initAction(a);
995 /* If there is nothing else to do, stop */
996 if (initActionList == NULL) {
997 message(LOG | CONSOLE,
998 "No more tasks for init -- sleeping forever.\n");
1003 /* Now run the looping stuff for the rest of forever */
1005 for (a = initActionList; a; a = a->nextPtr) {
1006 /* Only run stuff with pid==0. If they have
1007 * a pid, that means they are still running */
1009 switch (a->action) {
1011 /* run the respawn stuff */
1012 a->pid = run(a->process, a->console, FALSE);
1015 /* run the askfirst stuff */
1016 a->pid = run(a->process, a->console, TRUE);
1018 /* silence the compiler's incessant whining */
1024 /* Wait for a child process to exit */
1025 wpid = wait(&status);
1027 /* Find out who died and clean up their corpse */
1028 for (a = initActionList; a; a = a->nextPtr) {
1029 if (a->pid == wpid) {
1032 "Process '%s' (pid %d) exited. Scheduling it for restart.\n",
1043 c-file-style: "linux"