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;
90 #if __GNU_LIBRARY__ > 5
91 #include <sys/reboot.h>
92 #define init_reboot(magic) reboot(magic)
94 #define init_reboot(magic) reboot(0xfee1dead, 672274793, magic)
98 #define _PATH_STDPATH "/usr/bin:/bin:/usr/sbin:/sbin"
102 #if defined BB_FEATURE_INIT_COREDUMPS
104 * When a file named CORE_ENABLE_FLAG_FILE exists, setrlimit is called
105 * before processes are spawned to set core file size as unlimited.
106 * This is for debugging only. Don't use this is production, unless
107 * you want core dumps lying about....
109 #define CORE_ENABLE_FLAG_FILE "/.init_enable_core"
110 #include <sys/resource.h>
111 #include <sys/time.h>
114 #define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
116 #if __GNU_LIBRARY__ > 5
117 #include <sys/kdaemon.h>
119 extern int bdflush (int func, long int data);
123 #define VT_PRIMARY "/dev/tty1" /* Primary virtual console */
124 #define VT_SECONDARY "/dev/tty2" /* Virtual console */
125 #define VT_THIRD "/dev/tty3" /* Virtual console */
126 #define VT_FOURTH "/dev/tty4" /* Virtual console */
127 #define VT_LOG "/dev/tty5" /* Virtual console */
128 #define SERIAL_CON0 "/dev/ttyS0" /* Primary serial console */
129 #define SERIAL_CON1 "/dev/ttyS1" /* Serial console */
130 #define SHELL "-/bin/sh" /* Default shell */
131 #define INITTAB "/etc/inittab" /* inittab file location */
133 #define INIT_SCRIPT "/etc/init.d/rcS" /* Default sysinit script. */
136 #define MAXENV 16 /* Number of env. vars */
137 //static const int MAXENV = 16; /* Number of env. vars */
138 static const int LOG = 0x1;
139 static const int CONSOLE = 0x2;
141 /* Allowed init action types */
152 /* A mapping between "inittab" action name strings and action type codes. */
153 typedef struct initActionType {
155 initActionEnum action;
158 static const struct initActionType actions[] = {
159 {"sysinit", SYSINIT},
160 {"respawn", RESPAWN},
161 {"askfirst", ASKFIRST},
164 {"ctrlaltdel", CTRLALTDEL},
165 {"shutdown", SHUTDOWN},
169 /* Set up a linked list of initActions, to be read from inittab */
170 typedef struct initActionTag initAction;
171 struct initActionTag {
176 initActionEnum action;
178 static initAction *initActionList = NULL;
181 static char *secondConsole = VT_SECONDARY;
182 static char *thirdConsole = VT_THIRD;
183 static char *fourthConsole = VT_FOURTH;
184 static char *log = VT_LOG;
185 static int kernelVersion = 0;
186 static char termType[32] = "TERM=linux";
187 static char console[32] = _PATH_CONSOLE;
189 static void delete_initAction(initAction * action);
193 /* Print a message to the specified device.
194 * Device may be bitwise-or'd from LOG | CONSOLE */
195 static void message(int device, char *fmt, ...)
196 __attribute__ ((format (printf, 2, 3)));
197 static void message(int device, char *fmt, ...)
204 /* Log the message to syslogd */
208 va_start(arguments, fmt);
209 vsnprintf(msg, sizeof(msg), fmt, arguments);
211 openlog(applet_name, 0, LOG_USER);
212 syslog(LOG_USER|LOG_INFO, msg);
216 static int log_fd = -1;
218 /* Take full control of the log tty, and never close it.
219 * It's mine, all mine! Muhahahaha! */
222 /* don't even try to log, because there is no such console */
224 /* log to main console instead */
226 } else if ((log_fd = device_open(log, O_RDWR|O_NDELAY)) < 0) {
228 fprintf(stderr, "Bummer, can't write to log on %s!\r\n", log);
233 if ((device & LOG) && (log_fd >= 0)) {
234 va_start(arguments, fmt);
235 vdprintf(log_fd, fmt, arguments);
240 if (device & CONSOLE) {
241 /* Always send console messages to /dev/console so people will see them. */
244 device_open(_PATH_CONSOLE,
245 O_WRONLY | O_NOCTTY | O_NDELAY)) >= 0) {
246 va_start(arguments, fmt);
247 vdprintf(fd, fmt, arguments);
251 fprintf(stderr, "Bummer, can't print: ");
252 va_start(arguments, fmt);
253 vfprintf(stderr, fmt, arguments);
259 /* Set terminal settings to reasonable defaults */
260 static void set_term(int fd)
266 /* set control chars */
267 tty.c_cc[VINTR] = 3; /* C-c */
268 tty.c_cc[VQUIT] = 28; /* C-\ */
269 tty.c_cc[VERASE] = 127; /* C-? */
270 tty.c_cc[VKILL] = 21; /* C-u */
271 tty.c_cc[VEOF] = 4; /* C-d */
272 tty.c_cc[VSTART] = 17; /* C-q */
273 tty.c_cc[VSTOP] = 19; /* C-s */
274 tty.c_cc[VSUSP] = 26; /* C-z */
276 /* use line dicipline 0 */
279 /* Make it be sane */
280 tty.c_cflag &= CBAUD|CBAUDEX|CSIZE|CSTOPB|PARENB|PARODD;
281 tty.c_cflag |= HUPCL|CLOCAL;
284 tty.c_iflag = ICRNL | IXON | IXOFF;
287 tty.c_oflag = OPOST | ONLCR;
291 ISIG | ICANON | ECHO | ECHOE | ECHOK | ECHOCTL | ECHOKE | IEXTEN;
293 tcsetattr(fd, TCSANOW, &tty);
296 /* How much memory does this machine have?
297 Units are kBytes to avoid overflow on 4GB machines */
298 static int check_free_memory()
301 unsigned int result, u, s=10;
303 if (sysinfo(&info) != 0) {
304 perror_msg("Error checking free memory");
308 /* Kernels 2.0.x and 2.2.x return info.mem_unit==0 with values in bytes.
309 * Kernels 2.4.0 return info.mem_unit in bytes. */
312 while ( (u&1) == 0 && s > 0 ) { u>>=1; s--; }
313 result = (info.totalram>>s) + (info.totalswap>>s);
315 if (result < 0) result = INT_MAX;
319 static void console_init()
322 int tried_devcons = 0;
323 int tried_vtprimary = 0;
325 struct serial_struct sr;
328 if ((s = getenv("TERM")) != NULL) {
329 snprintf(termType, sizeof(termType) - 1, "TERM=%s", s);
332 if ((s = getenv("CONSOLE")) != NULL) {
333 snprintf(console, sizeof(console) - 1, "%s", s);
336 /* sparc kernel supports console=tty[ab] parameter which is also
337 * passed to init, so catch it here */
338 else if ((s = getenv("console")) != NULL) {
339 /* remap tty[ab] to /dev/ttyS[01] */
340 if (strcmp(s, "ttya") == 0)
341 snprintf(console, sizeof(console) - 1, "%s", SERIAL_CON0);
342 else if (strcmp(s, "ttyb") == 0)
343 snprintf(console, sizeof(console) - 1, "%s", SERIAL_CON1);
347 /* 2.2 kernels: identify the real console backend and try to use it */
348 if (ioctl(0, TIOCGSERIAL, &sr) == 0) {
349 /* this is a serial console */
350 snprintf(console, sizeof(console) - 1, "/dev/ttyS%d", sr.line);
351 } else if (ioctl(0, VT_GETSTATE, &vt) == 0) {
352 /* this is linux virtual tty */
353 snprintf(console, sizeof(console) - 1, "/dev/tty%d",
356 snprintf(console, sizeof(console) - 1, "%s", _PATH_CONSOLE);
361 while ((fd = open(console, O_RDONLY | O_NONBLOCK)) < 0) {
362 /* Can't open selected console -- try /dev/console */
363 if (!tried_devcons) {
365 snprintf(console, sizeof(console) - 1, "%s", _PATH_CONSOLE);
368 /* Can't open selected console -- try vt1 */
369 if (!tried_vtprimary) {
371 snprintf(console, sizeof(console) - 1, "%s", VT_PRIMARY);
377 /* Perhaps we should panic here? */
378 snprintf(console, sizeof(console) - 1, "/dev/null");
380 /* check for serial console and disable logging to tty5 & running a
382 if (ioctl(0, TIOCGSERIAL, &sr) == 0) {
384 secondConsole = NULL;
386 fourthConsole = NULL;
387 /* Force the TERM setting to vt102 for serial console --
388 * iff TERM is set to linux (the default) */
389 if (strcmp( termType, "TERM=linux" ) == 0)
390 snprintf(termType, sizeof(termType) - 1, "TERM=vt102");
391 message(LOG | CONSOLE,
392 "serial console detected. Disabling virtual terminals.\r\n");
396 message(LOG, "console=%s\n", console);
399 static void fixup_argv(int argc, char **argv, char *new_argv0)
402 /* Fix up argv[0] to be certain we claim to be init */
403 len = strlen(argv[0]);
404 memset(argv[0], 0, len);
405 strncpy(argv[0], new_argv0, len);
407 /* Wipe argv[1]-argv[N] so they don't clutter the ps listing */
410 memset(argv[len], 0, strlen(argv[len]));
416 static pid_t run(char *command, char *terminal, int get_enter)
422 char *cmd[255], *cmdpath;
425 static const char press_enter[] =
427 #ifdef CUSTOMIZED_BANNER
428 #include CUSTOMIZED_BANNER
431 "\nPlease press Enter to activate this console. ";
432 char *environment[MAXENV+1] = {
435 "PATH=/usr/bin:/bin:/usr/sbin:/sbin",
441 /* inherit environment to the child, merging our values -andy */
442 for (i=0; environ[i]; i++) {
443 for (j=0; environment[j]; j++) {
444 s = strchr(environment[j], '=');
445 if (!strncmp(environ[i], environment[j], s - environment[j]))
448 if (!environment[j]) {
449 environment[j++] = environ[i];
450 environment[j] = NULL;
454 if ((pid = fork()) == 0) {
456 ioctl(0, TIOCNOTTY, 0);
462 /* Reset signal handlers set for parent process */
463 signal(SIGUSR1, SIG_DFL);
464 signal(SIGUSR2, SIG_DFL);
465 signal(SIGINT, SIG_DFL);
466 signal(SIGTERM, SIG_DFL);
467 signal(SIGHUP, SIG_DFL);
469 if ((fd = device_open(terminal, O_RDWR)) < 0) {
470 if (stat(terminal, &sb) != 0) {
471 message(LOG | CONSOLE, "device '%s' does not exist.\n",
475 message(LOG | CONSOLE, "Bummer, can't open %s\r\n", terminal);
481 ioctl(0, TIOCSCTTY, 1);
482 tcsetpgrp(0, getpgrp());
485 /* See if any special /bin/sh requiring characters are present */
486 if (strpbrk(command, "~`!$^&*()=|\\{}[];\"'<>?") != NULL) {
489 strcpy(buf, "exec ");
490 strncat(buf, command, sizeof(buf) - strlen(buf) - 1);
494 /* Convert command (char*) into cmd (char**, one word per string) */
495 for (tmpCmd = command, i = 0;
496 (tmpCmd = strsep(&command, " \t")) != NULL;) {
497 if (*tmpCmd != '\0') {
509 Interactive shells want to see a dash in argv[0]. This
510 typically is handled by login, argv will be setup this
511 way if a dash appears at the front of the command path
515 if (*cmdpath == '-') {
517 /* skip over the dash */
520 /* find the last component in the command pathname */
521 s = get_last_path_component(cmdpath);
523 /* make a new argv[0] */
524 if ((cmd[0] = malloc(strlen(s)+2)) == NULL) {
525 message(LOG | CONSOLE, "malloc failed");
533 if (get_enter == TRUE) {
535 * Save memory by not exec-ing anything large (like a shell)
536 * before the user wants it. This is critical if swap is not
537 * enabled and the system has low memory. Generally this will
538 * be run on the second virtual console, and the first will
539 * be allowed to start a shell or whatever an init script
543 message(LOG, "Waiting for enter to start '%s' (pid %d, console %s)\r\n",
544 cmd[0], getpid(), terminal);
546 write(fileno(stdout), press_enter, sizeof(press_enter) - 1);
551 /* Log the process name and args */
552 message(LOG, "Starting pid %d, console %s: '%s'\r\n",
553 getpid(), terminal, command);
556 #if defined BB_FEATURE_INIT_COREDUMPS
557 if (stat (CORE_ENABLE_FLAG_FILE, &sb) == 0) {
559 limit.rlim_cur = RLIM_INFINITY;
560 limit.rlim_max = RLIM_INFINITY;
561 setrlimit(RLIMIT_CORE, &limit);
565 /* Now run it. The new program will take over this PID,
566 * so nothing further in init.c should be run. */
567 execve(cmdpath, cmd, environment);
569 /* We're still here? Some error happened. */
570 message(LOG | CONSOLE, "Bummer, could not run '%s': %s\n", cmdpath,
577 static int waitfor(char *command, char *terminal, int get_enter)
580 int pid = run(command, terminal, get_enter);
583 wpid = wait(&status);
584 if (wpid > 0 && wpid != pid) {
593 /* Make sure there is enough memory to do something useful. *
594 * Calls "swapon -a" if needed so be sure /etc/fstab is present... */
595 static void check_memory()
599 if (check_free_memory() > 1000)
602 if (stat("/etc/fstab", &statBuf) == 0) {
603 /* swapon -a requires /proc typically */
604 waitfor("mount proc /proc -t proc", console, FALSE);
605 /* Try to turn on swap */
606 waitfor("swapon -a", console, FALSE);
607 if (check_free_memory() < 1000)
615 "Sorry, your computer does not have enough memory.\r\n");
620 /* Run all commands to be run right before halt/reboot */
621 static void run_actions(initActionEnum action)
624 for (a = initActionList; a; a = tmp) {
626 if (a->action == action) {
627 waitfor(a->process, a->console, FALSE);
628 delete_initAction(a);
635 static void shutdown_system(void)
638 /* first disable our SIGHUP signal */
639 signal(SIGHUP, SIG_DFL);
641 /* Allow Ctrl-Alt-Del to reboot system. */
642 init_reboot(RB_ENABLE_CAD);
644 message(CONSOLE|LOG, "\r\nThe system is going down NOW !!\r\n");
647 /* Send signals to every process _except_ pid 1 */
648 message(CONSOLE|LOG, "Sending SIGTERM to all processes.\r\n");
653 message(CONSOLE|LOG, "Sending SIGKILL to all processes.\r\n");
657 /* run everything to be run at "shutdown" */
658 run_actions(SHUTDOWN);
661 if (kernelVersion > 0 && kernelVersion <= KERNEL_VERSION(2,2,11)) {
662 /* bdflush, kupdate not needed for kernels >2.2.11 */
668 static void halt_signal(int sig)
672 "The system is halted. Press %s or turn off power\r\n",
673 (secondConsole == NULL) /* serial console */
674 ? "Reset" : "CTRL-ALT-DEL");
677 /* allow time for last message to reach serial console */
680 if (sig == SIGUSR2 && kernelVersion >= KERNEL_VERSION(2,2,0))
681 init_reboot(RB_POWER_OFF);
683 init_reboot(RB_HALT_SYSTEM);
687 static void reboot_signal(int sig)
690 message(CONSOLE|LOG, "Please stand by while rebooting the system.\r\n");
693 /* allow time for last message to reach serial console */
696 init_reboot(RB_AUTOBOOT);
700 static void ctrlaltdel_signal(int sig)
702 run_actions(CTRLALTDEL);
705 #endif /* ! DEBUG_INIT */
707 static void new_initAction(initActionEnum action, char *process, char *cons)
709 initAction *newAction;
714 /* If BusyBox detects that a serial console is in use,
715 * then entries not refering to the console or null devices will _not_ be run.
716 * The exception to this rule is the null device.
718 if (secondConsole == NULL && strcmp(cons, console)
719 && strcmp(cons, "/dev/null"))
722 newAction = calloc((size_t) (1), sizeof(initAction));
724 message(LOG | CONSOLE, "Memory allocation failure\n");
728 newAction->nextPtr = initActionList;
729 initActionList = newAction;
730 strncpy(newAction->process, process, 255);
731 newAction->action = action;
732 strncpy(newAction->console, cons, 255);
734 // message(LOG|CONSOLE, "process='%s' action='%d' console='%s'\n",
735 // newAction->process, newAction->action, newAction->console);
738 static void delete_initAction(initAction * action)
740 initAction *a, *b = NULL;
742 for (a = initActionList; a; b = a, a = a->nextPtr) {
745 initActionList = a->nextPtr;
747 b->nextPtr = a->nextPtr;
755 /* NOTE that if BB_FEATURE_USE_INITTAB is NOT defined,
756 * then parse_inittab() simply adds in some default
757 * actions(i.e runs INIT_SCRIPT and then starts a pair
758 * of "askfirst" shells). If BB_FEATURE_USE_INITTAB
759 * _is_ defined, but /etc/inittab is missing, this
760 * results in the same set of default behaviors.
762 static void parse_inittab(void)
764 #ifdef BB_FEATURE_USE_INITTAB
766 char buf[256], lineAsRead[256], tmpConsole[256];
767 char *id, *runlev, *action, *process, *eol;
768 const struct initActionType *a = actions;
772 file = fopen(INITTAB, "r");
774 /* No inittab file -- set up some default behavior */
776 /* Reboot on Ctrl-Alt-Del */
777 new_initAction(CTRLALTDEL, "/sbin/reboot", console);
778 /* Swapoff on halt/reboot */
779 new_initAction(SHUTDOWN, "/sbin/swapoff -a", console);
780 /* Umount all filesystems on halt/reboot */
781 new_initAction(SHUTDOWN, "/bin/umount -a -r", console);
782 /* Askfirst shell on tty1 */
783 new_initAction(ASKFIRST, SHELL, console);
784 /* Askfirst shell on tty2 */
785 if (secondConsole != NULL)
786 new_initAction(ASKFIRST, SHELL, secondConsole);
787 /* Askfirst shell on tty3 */
788 if (thirdConsole != NULL)
789 new_initAction(ASKFIRST, SHELL, thirdConsole);
790 /* Askfirst shell on tty4 */
791 if (fourthConsole != NULL)
792 new_initAction(ASKFIRST, SHELL, fourthConsole);
794 new_initAction(SYSINIT, INIT_SCRIPT, console);
797 #ifdef BB_FEATURE_USE_INITTAB
800 while (fgets(buf, 255, file) != NULL) {
802 /* Skip leading spaces */
803 for (id = buf; *id == ' ' || *id == '\t'; id++);
805 /* Skip the line if it's a comment */
806 if (*id == '#' || *id == '\n')
809 /* Trim the trailing \n */
810 eol = strrchr(id, '\n');
814 /* Keep a copy around for posterity's sake (and error msgs) */
815 strcpy(lineAsRead, buf);
817 /* Separate the ID field from the runlevels */
818 runlev = strchr(id, ':');
819 if (runlev == NULL || *(runlev + 1) == '\0') {
820 message(LOG | CONSOLE, "Bad inittab entry: %s\n", lineAsRead);
827 /* Separate the runlevels from the action */
828 action = strchr(runlev, ':');
829 if (action == NULL || *(action + 1) == '\0') {
830 message(LOG | CONSOLE, "Bad inittab entry: %s\n", lineAsRead);
837 /* Separate the action from the process */
838 process = strchr(action, ':');
839 if (process == NULL || *(process + 1) == '\0') {
840 message(LOG | CONSOLE, "Bad inittab entry: %s\n", lineAsRead);
847 /* Ok, now process it */
849 while (a->name != 0) {
850 if (strcmp(a->name, action) == 0) {
852 strcpy(tmpConsole, "/dev/");
853 strncat(tmpConsole, id, 200);
856 new_initAction(a->action, process, id);
864 /* Choke on an unknown action */
865 message(LOG | CONSOLE, "Bad inittab entry: %s\n", lineAsRead);
869 #endif /* BB_FEATURE_USE_INITTAB */
874 extern int init_main(int argc, char **argv)
881 /* Expect to be invoked as init with PID=1 or be invoked as linuxrc */
883 #ifdef BB_FEATURE_LINUXRC
884 && strstr(applet_name, "linuxrc") == NULL
890 /* Set up sig handlers -- be sure to
891 * clear all of these in run() */
892 signal(SIGUSR1, halt_signal);
893 signal(SIGUSR2, halt_signal);
894 signal(SIGINT, ctrlaltdel_signal);
895 signal(SIGTERM, reboot_signal);
897 /* Turn off rebooting via CTL-ALT-DEL -- we get a
898 * SIGINT on CAD so we can shut things down gracefully... */
899 init_reboot(RB_DISABLE_CAD);
902 /* Figure out what kernel this is running */
903 kernelVersion = get_kernel_revision();
905 /* Figure out where the default console should be */
908 /* Close whatever files are open, and reset the console. */
916 /* Make sure PATH is set to something sane */
917 putenv("PATH="_PATH_STDPATH);
922 #if ! defined BB_FEATURE_EXTRA_QUIET
926 "init started: %s\r\n", full_version);
929 #if ! defined BB_FEATURE_EXTRA_QUIET
933 "init(%d) started: %s\r\n", getpid(), full_version);
937 /* Make sure there is enough memory to do something useful. */
940 /* Check if we are supposed to be in single user mode */
941 if (argc > 1 && (!strcmp(argv[1], "single") ||
942 !strcmp(argv[1], "-s") || !strcmp(argv[1], "1"))) {
943 /* Ask first then start a shell on tty2-4 */
944 if (secondConsole != NULL)
945 new_initAction(ASKFIRST, SHELL, secondConsole);
946 if (thirdConsole != NULL)
947 new_initAction(ASKFIRST, SHELL, thirdConsole);
948 if (fourthConsole != NULL)
949 new_initAction(ASKFIRST, SHELL, fourthConsole);
950 /* Start a shell on tty1 */
951 new_initAction(RESPAWN, SHELL, console);
953 /* Not in single user mode -- see what inittab says */
955 /* NOTE that if BB_FEATURE_USE_INITTAB is NOT defined,
956 * then parse_inittab() simply adds in some default
957 * actions(i.e runs INIT_SCRIPT and then starts a pair
958 * of "askfirst" shells */
962 /* Make the command line just say "init" -- thats all, nothing else */
963 fixup_argv(argc, argv, "init");
965 /* Now run everything that needs to be run */
967 /* First run the sysinit command */
968 for (a = initActionList; a; a = tmp) {
970 if (a->action == SYSINIT) {
971 waitfor(a->process, a->console, FALSE);
972 /* Now remove the "sysinit" entry from the list */
973 delete_initAction(a);
976 /* Next run anything that wants to block */
977 for (a = initActionList; a; a = tmp) {
979 if (a->action == WAIT) {
980 waitfor(a->process, a->console, FALSE);
981 /* Now remove the "wait" entry from the list */
982 delete_initAction(a);
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");
1002 /* Now run the looping stuff for the rest of forever */
1004 for (a = initActionList; a; a = a->nextPtr) {
1005 /* Only run stuff with pid==0. If they have
1006 * a pid, that means they are still running */
1008 switch (a->action) {
1010 /* run the respawn stuff */
1011 a->pid = run(a->process, a->console, FALSE);
1014 /* run the askfirst stuff */
1015 a->pid = run(a->process, a->console, TRUE);
1017 /* silence the compiler's incessant whining */
1023 /* Wait for a child process to exit */
1024 wpid = wait(&status);
1026 /* Find out who died and clean up their corpse */
1027 for (a = initActionList; a; a = a->nextPtr) {
1028 if (a->pid == wpid) {
1031 "Process '%s' (pid %d) exited. Scheduling it for restart.\n",
1042 c-file-style: "linux"