/* * rc.c * rc - manager for init scripts which control the startup, shutdown * and the running of daemons. * * Also a multicall binary for various commands that can be used in shell * scripts to query service state, mark service state and provide the * einfo family of informational functions. */ /* * Copyright 2007-2008 Roy Marples * All rights reserved * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ const char rc_copyright[] = "Copyright (c) 2007-2008 Roy Marples"; #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "builtins.h" #include "einfo.h" #include "rc.h" #include "rc-logger.h" #include "rc-misc.h" #include "rc-plugin.h" #include "strlist.h" #include "version.h" #define INITSH RC_LIBDIR "/sh/init.sh" #define INITEARLYSH RC_LIBDIR "/sh/init-early.sh" #define HALTSH RC_INITDIR "/halt.sh" #define SHUTDOWN "/sbin/shutdown" #define SULOGIN "/sbin/sulogin" #define INTERACTIVE RC_SVCDIR "/interactive" #define DEVBOOT "/dev/.rcboot" /* Cleanup anything in main */ #define CHAR_FREE(_item) if (_item) { \ free (_item); \ _item = NULL; \ } extern char **environ; static char *RUNLEVEL = NULL; static char *PREVLEVEL = NULL; const char *applet = NULL; static char *runlevel = NULL; static char **env = NULL; static char **newenv = NULL; static char **coldplugged_services = NULL; static char **stop_services = NULL; static char **start_services = NULL; static rc_depinfo_t *deptree = NULL; static char *tmp = NULL; struct termios *termios_orig = NULL; typedef struct pidlist { pid_t pid; struct pidlist *next; } pidlist_t; static pidlist_t *service_pids = NULL; static const char *const types_n[] = { "needsme", NULL }; static const char *const types_nua[] = { "ineed", "iuse", "iafter", NULL }; static void clean_failed (void) { DIR *dp; struct dirent *d; size_t l; char *path; /* Clean the failed services state dir now */ if ((dp = opendir (RC_SVCDIR "/failed"))) { while ((d = readdir (dp))) { if (d->d_name[0] == '.' && (d->d_name[1] == '\0' || (d->d_name[1] == '.' && d->d_name[2] == '\0'))) continue; l = strlen (RC_SVCDIR "/failed/") + strlen (d->d_name) + 1; path = xmalloc (sizeof (char) * l); snprintf (path, l, RC_SVCDIR "/failed/%s", d->d_name); if (path) { if (unlink (path)) eerror ("%s: unlink `%s': %s", applet, path, strerror (errno)); free (path); } } closedir (dp); } } static void cleanup (void) { if (applet && strcmp (applet, "rc") == 0) { pidlist_t *pl = service_pids; rc_plugin_unload (); if (! rc_in_plugin && termios_orig) { tcsetattr (fileno (stdin), TCSANOW, termios_orig); free (termios_orig); } while (pl) { pidlist_t *p = pl->next; free (pl); pl = p; } rc_strlist_free (env); rc_strlist_free (newenv); rc_strlist_free (coldplugged_services); rc_strlist_free (stop_services); rc_strlist_free (start_services); rc_deptree_free (deptree); /* Clean runlevel start, stop markers */ if (! rc_in_plugin && ! rc_in_logger) { rmdir (RC_STARTING); rmdir (RC_STOPPING); clean_failed (); rc_logger_close (); } free (runlevel); } } #ifdef __linux__ static char *proc_getent (const char *ent) { FILE *fp; char *proc; char *p; char *value = NULL; int i; if (! exists ("/proc/cmdline")) return (NULL); if (! (fp = fopen ("/proc/cmdline", "r"))) { eerror ("failed to open `/proc/cmdline': %s", strerror (errno)); return (NULL); } if ((proc = rc_getline (fp)) && (p = strstr (proc, ent))) { i = p - proc; if (i == '\0' || proc[i - 1] == ' ') { p += strlen (ent); if (*p == '=') p++; value = xstrdup (strsep (&p, " ")); } } else errno = ENOENT; free (proc); fclose (fp); return (value); } #endif static char read_key (bool block) { struct termios termios; char c = 0; int fd = fileno (stdin); if (! isatty (fd)) return (false); /* Now save our terminal settings. We need to restore them at exit as we * will be changing it for non-blocking reads for Interactive */ if (! termios_orig) { termios_orig = xmalloc (sizeof (*termios_orig)); tcgetattr (fd, termios_orig); } tcgetattr (fd, &termios); termios.c_lflag &= ~(ICANON | ECHO); if (block) termios.c_cc[VMIN] = 1; else { termios.c_cc[VMIN] = 0; termios.c_cc[VTIME] = 0; } tcsetattr (fd, TCSANOW, &termios); read (fd, &c, 1); tcsetattr (fd, TCSANOW, termios_orig); return (c); } static bool want_interactive (void) { char c; static bool gotinteractive; static bool interactive; if (rc_yesno (getenv ("EINFO_QUIET"))) return (false); if (PREVLEVEL && strcmp (PREVLEVEL, "N") != 0 && strcmp (PREVLEVEL, "S") != 0 && strcmp (PREVLEVEL, "1") != 0) return (false); if (! gotinteractive) { gotinteractive = true; interactive = rc_conf_yesno ("rc_interactive"); } if (! interactive) return (false); c = read_key (false); return ((c == 'I' || c == 'i') ? true : false); } static void mark_interactive (void) { FILE *fp = fopen (INTERACTIVE, "w"); if (fp) fclose (fp); } static void sulogin (bool cont) { int status = 0; struct sigaction sa; sigset_t full; sigset_t old; pid_t pid; #ifdef __linux__ char *e = getenv ("RC_SYS"); /* VPS systems cannot do a sulogin */ if (e && strcmp (e, "VPS") == 0) { execl ("/sbin/halt", "/sbin/halt", "-f", (char *) NULL); eerrorx ("%s: unable to exec `/sbin/halt': %s", applet, strerror (errno)); } #endif newenv = env_filter (); if (! cont) { rc_logger_close (); #ifdef __linux__ execle ("/sbin/sulogin", "/sbin/sulogin", (char *) NULL, newenv); eerrorx ("%s: unable to exec `/sbin/sulogin': %s", applet, strerror (errno)); #else exit (EXIT_SUCCESS); #endif } /* We need to block signals until we have forked */ memset (&sa, 0, sizeof (sa)); sa.sa_handler = SIG_DFL; sigemptyset (&sa.sa_mask); sigfillset (&full); sigprocmask (SIG_SETMASK, &full, &old); pid = vfork (); if (pid == -1) eerrorx ("%s: fork: %s", applet, strerror (errno)); if (pid == 0) { /* Restore default handlers */ sigaction (SIGCHLD, &sa, NULL); sigaction (SIGHUP, &sa, NULL); sigaction (SIGINT, &sa, NULL); sigaction (SIGQUIT, &sa, NULL); sigaction (SIGTERM, &sa, NULL); sigaction (SIGUSR1, &sa, NULL); sigaction (SIGWINCH, &sa, NULL); /* Unmask signals */ sigprocmask (SIG_SETMASK, &old, NULL); if (termios_orig) tcsetattr (fileno (stdin), TCSANOW, termios_orig); #ifdef __linux__ execle (SULOGIN, SULOGIN, (char *) NULL, newenv); eerror ("%s: unable to exec `%s': %s", applet, SULOGIN, strerror (errno)); #else execle ("/bin/sh", "/bin/sh", (char *) NULL, newenv); eerror ("%s: unable to exec `/bin/sh': %s", applet, strerror (errno)); #endif _exit (EXIT_FAILURE); } /* Unmask signals and wait for child */ sigprocmask (SIG_SETMASK, &old, NULL); waitpid (pid, &status, 0); } static void single_user (void) { rc_logger_close (); execl (SHUTDOWN, SHUTDOWN, "now", (char *) NULL); eerrorx ("%s: unable to exec `" SHUTDOWN "': %s", applet, strerror (errno)); } static bool set_ksoftlevel (const char *level) { FILE *fp; if (! level || strcmp (level, getenv ("RC_BOOTLEVEL")) == 0 || strcmp (level, RC_LEVEL_SINGLE) == 0 || strcmp (level, RC_LEVEL_SYSINIT) == 0) { if (exists (RC_KSOFTLEVEL) && unlink (RC_KSOFTLEVEL) != 0) eerror ("unlink `%s': %s", RC_KSOFTLEVEL, strerror (errno)); return (false); } if (! (fp = fopen (RC_KSOFTLEVEL, "w"))) { eerror ("fopen `%s': %s", RC_KSOFTLEVEL, strerror (errno)); return (false); } fprintf (fp, "%s", level); fclose (fp); return (true); } static int get_ksoftlevel (char *buffer, int buffer_len) { FILE *fp; int i = 0; if (! exists (RC_KSOFTLEVEL)) return (0); if (! (fp = fopen (RC_KSOFTLEVEL, "r"))) { eerror ("fopen `%s': %s", RC_KSOFTLEVEL, strerror (errno)); return (-1); } if (fgets (buffer, buffer_len, fp)) { i = strlen (buffer) - 1; if (buffer[i] == '\n') buffer[i] = 0; } fclose (fp); return (i); } static void add_pid (pid_t pid) { pidlist_t *sp = service_pids; if (sp) { while (sp->next) sp = sp->next; sp->next = xmalloc (sizeof (*sp->next)); sp = sp->next; } else sp = service_pids = xmalloc (sizeof (*sp)); memset (sp, 0, sizeof (*sp)); sp->pid = pid; } static void remove_pid (pid_t pid) { pidlist_t *last = NULL; pidlist_t *pl; for (pl = service_pids; pl; pl = pl->next) { if (pl->pid == pid) { if (last) last->next = pl->next; else service_pids = pl->next; free (pl); break; } last = pl; } } static void wait_for_services () { while (waitpid (0, 0, 0) != -1); } static void handle_signal (int sig) { int serrno = errno; char signame[10] = { '\0' }; pidlist_t *pl; pid_t pid; int status = 0; struct winsize ws; sigset_t sset; switch (sig) { case SIGCHLD: do { pid = waitpid (-1, &status, WNOHANG); if (pid < 0) { if (errno != ECHILD) eerror ("waitpid: %s", strerror (errno)); return; } } while (! WIFEXITED (status) && ! WIFSIGNALED (status)); /* Remove that pid from our list */ if (pid > 0) remove_pid (pid); break; case SIGWINCH: if (rc_logger_tty >= 0) { ioctl (STDIN_FILENO, TIOCGWINSZ, &ws); ioctl (rc_logger_tty, TIOCSWINSZ, &ws); } break; case SIGINT: if (! signame[0]) snprintf (signame, sizeof (signame), "SIGINT"); /* FALLTHROUGH */ case SIGTERM: if (! signame[0]) snprintf (signame, sizeof (signame), "SIGTERM"); /* FALLTHROUGH */ case SIGQUIT: if (! signame[0]) snprintf (signame, sizeof (signame), "SIGQUIT"); eerrorx ("%s: caught %s, aborting", applet, signame); /* NOTREACHED */ case SIGUSR1: eerror ("rc: Aborting!"); /* Block child signals */ sigemptyset (&sset); sigaddset (&sset, SIGCHLD); sigprocmask (SIG_BLOCK, &sset, NULL); /* Kill any running services we have started */ for (pl = service_pids; pl; pl = pl->next) kill (pl->pid, SIGTERM); /* Notify plugins we are aborting */ rc_plugin_run (RC_HOOK_ABORT, NULL); /* Only drop into single user mode if we're booting */ if ((PREVLEVEL && (strcmp (PREVLEVEL, "S") == 0 || strcmp (PREVLEVEL, "1") == 0)) || (RUNLEVEL && (strcmp (RUNLEVEL, "S") == 0 || strcmp (RUNLEVEL, "1") == 0))) single_user (); exit (EXIT_FAILURE); /* NOTREACHED */ default: eerror ("%s: caught unknown signal %d", applet, sig); } /* Restore errno */ errno = serrno; } static void run_script (const char *script) { int status = 0; pid_t pid = vfork (); if (pid < 0) eerrorx ("%s: vfork: %s", applet, strerror (errno)); else if (pid == 0) { execl (script, script, (char *) NULL); eerror ("%s: unable to exec `%s': %s", script, applet, strerror (errno)); _exit (EXIT_FAILURE); } do { pid_t wpid = waitpid (pid, &status, 0); if (wpid < 1) eerror ("waitpid: %s", strerror (errno)); } while (! WIFEXITED (status) && ! WIFSIGNALED (status)); if (! WIFEXITED (status) || ! WEXITSTATUS (status) == 0) eerrorx ("%s: failed to exec `%s'", applet, script); } #ifndef PREFIX static void do_coldplug (void) { int i; DIR *dp; struct dirent *d; char *service; if (! rc_conf_yesno ("rc_coldplug") && errno != ENOENT) return; /* We need to ensure our state dirs exist. * We should have a better call than this, but oh well. */ rc_deptree_update_needed (); #ifdef BSD #if defined(__DragonFly__) || defined(__FreeBSD__) /* The net interfaces are easy - they're all in net /dev/net :) */ if ((dp = opendir ("/dev/net"))) { while ((d = readdir (dp))) { i = (strlen ("net.") + strlen (d->d_name) + 1); tmp = xmalloc (sizeof (char) * i); snprintf (tmp, i, "net.%s", d->d_name); if (rc_service_exists (tmp) && service_plugable (tmp)) rc_service_mark (tmp, RC_SERVICE_COLDPLUGGED); CHAR_FREE (tmp); } closedir (dp); } #endif /* The mice are a little more tricky. * If we coldplug anything else, we'll probably do it here. */ if ((dp = opendir ("/dev"))) { while ((d = readdir (dp))) { if (strncmp (d->d_name, "psm", 3) == 0 || strncmp (d->d_name, "ums", 3) == 0) { char *p = d->d_name + 3; if (p && isdigit ((int) *p)) { size_t len; len = (strlen ("moused.") + strlen (d->d_name) + 1); tmp = xmalloc (sizeof (char) * len); snprintf (tmp, len, "moused.%s", d->d_name); if (rc_service_exists (tmp) && service_plugable (tmp)) rc_service_mark (tmp, RC_SERVICE_COLDPLUGGED); CHAR_FREE (tmp); } } } closedir (dp); } #elif __linux__ /* udev likes to start services before we're ready when it does * its coldplugging thing. runscript knows when we're not ready so it * stores a list of coldplugged services in DEVBOOT for us to pick up * here when we are ready for them */ if ((dp = opendir (DEVBOOT))) { while ((d = readdir (dp))) { if (d->d_name[0] == '.' && (d->d_name[1] == '\0' || (d->d_name[1] == '.' && d->d_name[2] == '\0'))) continue; if (rc_service_exists (d->d_name) && service_plugable (d->d_name)) rc_service_mark (d->d_name, RC_SERVICE_COLDPLUGGED); i = strlen (DEVBOOT "/") + strlen (d->d_name) + 1; tmp = xmalloc (sizeof (char) * i); snprintf (tmp, i, DEVBOOT "/%s", d->d_name); if (tmp) { if (unlink (tmp)) eerror ("%s: unlink `%s': %s", applet, tmp, strerror (errno)); free (tmp); } } closedir (dp); rmdir (DEVBOOT); } #endif if (rc_yesno (getenv ("EINFO_QUIET"))) return; /* Load our list of coldplugged services and display them */ einfon ("Device initiated services:%s", ecolor (ECOLOR_HILITE)); coldplugged_services = rc_services_in_state (RC_SERVICE_COLDPLUGGED); STRLIST_FOREACH (coldplugged_services, service, i) printf (" %s", service); printf ("%s\n", ecolor (ECOLOR_NORMAL)); } #endif #include "_usage.h" #define getoptstring "o:" getoptstring_COMMON static const struct option longopts[] = { { "override", 1, NULL, 'o' }, longopts_COMMON }; static const char * const longopts_help[] = { "override the next runlevel to change into\nwhen leaving single user or boot runlevels", longopts_help_COMMON }; #include "_usage.c" int main (int argc, char **argv) { const char *bootlevel = NULL; const char *sys = rc_sys (); char *newlevel = NULL; char *service = NULL; char **deporder = NULL; char **tmplist; int i = 0; int j = 0; bool going_down = false; bool interactive = false; int depoptions = RC_DEP_STRICT | RC_DEP_TRACE; char ksoftbuffer [PATH_MAX]; char pidstr[6]; int opt; bool parallel; int regen = 0; pid_t pid; applet = basename_c (argv[0]); atexit (cleanup); if (! applet) eerrorx ("arguments required"); if (argc > 1 && (strcmp (argv[1], "--version") == 0)) { printf ("%s (OpenRC" #ifdef BRANDING " " BRANDING #endif ")", applet); if (sys) printf (" [%s]", sys); printf (" version " VERSION "\n"); exit (EXIT_SUCCESS); } /* Run our built in applets. If we ran one, we don't return. */ run_applets (argc, argv); argc--; argv++; /* Change dir to / to ensure all scripts don't use stuff in pwd */ chdir ("/"); /* RUNLEVEL is set by sysvinit as is a magic number * RC_SOFTLEVEL is set by us and is the name for this magic number * even though all our userland documentation refers to runlevel */ RUNLEVEL = getenv ("RUNLEVEL"); PREVLEVEL = getenv ("PREVLEVEL"); /* Ensure our environment is pure * Also, add our configuration to it */ env = env_filter (); tmplist = env_config (); rc_strlist_join (&env, tmplist); rc_strlist_free (tmplist); if (env) { char *p; #ifdef __linux__ /* clearenv isn't portable, but there's no harm in using it * if we have it */ clearenv (); #else char *var; /* No clearenv present here then. * We could manipulate environ directly ourselves, but it seems that * some kernels bitch about this according to the environ man pages * so we walk though environ and call unsetenv for each value. */ while (environ[0]) { tmp = xstrdup (environ[0]); p = tmp; var = strsep (&p, "="); unsetenv (var); free (tmp); } tmp = NULL; #endif STRLIST_FOREACH (env, p, i) if (strcmp (p, "RC_SOFTLEVEL") != 0 && strcmp (p, "SOFTLEVEL") != 0) putenv (p); /* We don't free our list as that would be null in environ */ } argc++; argv--; while ((opt = getopt_long (argc, argv, getoptstring, longopts, (int *) 0)) != -1) { switch (opt) { case 'o': if (*optarg == '\0') optarg = NULL; exit (set_ksoftlevel (optarg) ? EXIT_SUCCESS : EXIT_FAILURE); /* NOTREACHED */ case_RC_COMMON_GETOPT } } newlevel = argv[optind++]; #ifndef PREFIX /* OK, so we really are the main RC process * Only root should be able to run us */ if (geteuid () != 0) eerrorx ("%s: root access required", applet); #endif /* Enable logging */ setenv ("EINFO_LOG", "rc", 1); /* Export our PID */ snprintf (pidstr, sizeof (pidstr), "%d", getpid ()); setenv ("RC_PID", pidstr, 1); /* Load current softlevel */ bootlevel = getenv ("RC_BOOTLEVEL"); runlevel = rc_runlevel_get (); rc_logger_open (newlevel ? newlevel : runlevel); /* Setup a signal handler */ signal_setup (SIGINT, handle_signal); signal_setup (SIGQUIT, handle_signal); signal_setup (SIGTERM, handle_signal); signal_setup (SIGUSR1, handle_signal); signal_setup (SIGWINCH, handle_signal); if (! rc_yesno (getenv ("EINFO_QUIET"))) interactive = exists (INTERACTIVE); rc_plugin_load (); /* Check we're in the runlevel requested, ie from * rc single * rc shutdown * rc reboot */ if (newlevel) { if (strcmp (newlevel, RC_LEVEL_SYSINIT) == 0 #ifndef PREFIX && RUNLEVEL && (strcmp (RUNLEVEL, "S") == 0 || strcmp (RUNLEVEL, "1") == 0) #endif ) { struct utsname uts; /* OK, we're either in runlevel 1 or single user mode */ #ifdef __linux__ char *cmd; #endif /* exec init-early.sh if it exists * This should just setup the console to use the correct * font. Maybe it should setup the keyboard too? */ if (exists (INITEARLYSH)) run_script (INITEARLYSH); uname (&uts); printf ("\n %sOpenRC %s" VERSION "%s is starting up %s", ecolor (ECOLOR_GOOD), ecolor (ECOLOR_HILITE), ecolor (ECOLOR_NORMAL), ecolor (ECOLOR_BRACKET)); #ifdef BRANDING printf (BRANDING " (%s)", uts.machine); #else printf ("%s %s (%s)", uts.sysname, uts.release, uts.machine); #endif if (sys) printf (" [%s]", sys); printf ("%s\n\n", ecolor (ECOLOR_NORMAL)); if (! rc_yesno (getenv ("EINFO_QUIET")) && rc_conf_yesno ("rc_interactive")) printf ("Press %sI%s to enter interactive boot mode\n\n", ecolor (ECOLOR_GOOD), ecolor (ECOLOR_NORMAL)); setenv ("RC_SOFTLEVEL", newlevel, 1); rc_plugin_run (RC_HOOK_RUNLEVEL_START_IN, newlevel); run_script (INITSH); #ifdef __linux__ /* If we requested a softlevel, save it now */ set_ksoftlevel (NULL); if ((cmd = proc_getent ("softlevel"))) { set_ksoftlevel (cmd); free (cmd); } #endif #ifndef PREFIX do_coldplug (); #endif rc_plugin_run (RC_HOOK_RUNLEVEL_START_OUT, newlevel); if (want_interactive ()) mark_interactive (); exit (EXIT_SUCCESS); } else if (strcmp (newlevel, RC_LEVEL_SINGLE) == 0) { #ifndef PREFIX if (! RUNLEVEL || (strcmp (RUNLEVEL, "S") != 0 && strcmp (RUNLEVEL, "1") != 0)) { /* Remember the current runlevel for when we come back */ set_ksoftlevel (runlevel); single_user (); } #endif } else if (strcmp (newlevel, RC_LEVEL_REBOOT) == 0) { if (! RUNLEVEL || strcmp (RUNLEVEL, "6") != 0) { rc_logger_close (); execl (SHUTDOWN, SHUTDOWN, "-r", "now", (char *) NULL); eerrorx ("%s: unable to exec `" SHUTDOWN "': %s", applet, strerror (errno)); } } else if (strcmp (newlevel, RC_LEVEL_SHUTDOWN) == 0) { if (! RUNLEVEL || strcmp (RUNLEVEL, "0") != 0) { rc_logger_close (); execl (SHUTDOWN, SHUTDOWN, #ifdef __linux__ "-h", #else "-p", #endif "now", (char *) NULL); eerrorx ("%s: unable to exec `" SHUTDOWN "': %s", applet, strerror (errno)); } } } /* Now we start handling our children */ signal_setup (SIGCHLD, handle_signal); /* We should only use ksoftlevel if we were in single user mode * If not, we need to erase ksoftlevel now. */ if (PREVLEVEL && (strcmp (PREVLEVEL, "1") == 0 || strcmp (PREVLEVEL, "S") == 0 || strcmp (PREVLEVEL, "N") == 0)) { /* Try not to join boot and ksoftlevels together */ if (! newlevel || strcmp (newlevel, getenv ("RC_BOOTLEVEL")) != 0) if (get_ksoftlevel (ksoftbuffer, sizeof (ksoftbuffer))) newlevel = ksoftbuffer; } else if (! RUNLEVEL || (strcmp (RUNLEVEL, "1") != 0 && strcmp (RUNLEVEL, "S") != 0 && strcmp (RUNLEVEL, "N") != 0)) { set_ksoftlevel (NULL); } if (newlevel && (strcmp (newlevel, RC_LEVEL_REBOOT) == 0 || strcmp (newlevel, RC_LEVEL_SHUTDOWN) == 0 || strcmp (newlevel, RC_LEVEL_SINGLE) == 0)) { going_down = true; rc_runlevel_set (newlevel); setenv ("RC_SOFTLEVEL", newlevel, 1); #ifdef __FreeBSD__ /* FIXME: we shouldn't have todo this */ /* For some reason, wait_for_services waits for the logger proccess * to finish as well, but only on FreeBSD. We cannot allow this so * we stop logging now. */ rc_logger_close (); #endif rc_plugin_run (RC_HOOK_RUNLEVEL_STOP_IN, newlevel); } else { rc_plugin_run (RC_HOOK_RUNLEVEL_STOP_IN, runlevel); } /* Check if runlevel is valid if we're changing */ if (newlevel && strcmp (runlevel, newlevel) != 0 && ! going_down) { if (! rc_runlevel_exists (newlevel)) eerrorx ("%s: is not a valid runlevel", newlevel); } /* Load our deptree */ if ((deptree = _rc_deptree_load (®en)) == NULL) eerrorx ("failed to load deptree"); /* Clean the failed services state dir */ clean_failed (); mkdir (RC_STOPPING, 0755); /* Build a list of all services to stop and then work out the * correct order for stopping them */ stop_services = rc_services_in_state (RC_SERVICE_STARTING); tmplist = rc_services_in_state (RC_SERVICE_INACTIVE); rc_strlist_join (&stop_services, tmplist); rc_strlist_free (tmplist); tmplist = rc_services_in_state (RC_SERVICE_STARTED); rc_strlist_join (&stop_services, tmplist); rc_strlist_free (tmplist); deporder = rc_deptree_depends (deptree, types_nua, (const char **) stop_services, runlevel, depoptions | RC_DEP_STOP); rc_strlist_free (stop_services); stop_services = deporder; deporder = NULL; rc_strlist_reverse (stop_services); /* Load our list of coldplugged services */ coldplugged_services = rc_services_in_state (RC_SERVICE_COLDPLUGGED); if (strcmp (newlevel ? newlevel : runlevel, RC_LEVEL_SINGLE) != 0 && strcmp (newlevel ? newlevel : runlevel, RC_LEVEL_SHUTDOWN) != 0 && strcmp (newlevel ? newlevel : runlevel, RC_LEVEL_REBOOT) != 0) { /* We need to include the boot runlevel services if we're not in it */ start_services = rc_services_in_runlevel (bootlevel); if (strcmp (newlevel ? newlevel : runlevel, bootlevel) != 0) { tmplist = rc_services_in_runlevel (newlevel ? newlevel : runlevel); rc_strlist_join (&start_services, tmplist); rc_strlist_free (tmplist); } STRLIST_FOREACH (coldplugged_services, service, i) rc_strlist_add (&start_services, service); } /* Save our softlevel now */ if (going_down) rc_runlevel_set (newlevel); parallel = rc_conf_yesno ("rc_parallel"); /* Now stop the services that shouldn't be running */ STRLIST_FOREACH (stop_services, service, i) { bool found = false; char *conf = NULL; char **stopdeps = NULL; char *svc1 = NULL; char *svc2 = NULL; int k; if (rc_service_state (service) & RC_SERVICE_STOPPED) continue; /* We always stop the service when in these runlevels */ if (going_down) { pid = rc_service_stop (service); if (pid > 0 && ! parallel) rc_waitpid (pid); continue; } /* If we're in the start list then don't bother stopping us */ STRLIST_FOREACH (start_services, svc1, j) if (strcmp (svc1, service) == 0) { found = true; break; } /* Unless we would use a different config file */ if (found) { size_t len; if (! newlevel) continue; len = strlen (service) + strlen (runlevel) + 2; tmp = xmalloc (sizeof (char) * len); snprintf (tmp, len, "%s.%s", service, runlevel); conf = rc_strcatpaths (RC_CONFDIR, tmp, (char *) NULL); found = exists (conf); CHAR_FREE (conf); CHAR_FREE (tmp); if (! found) { len = strlen (service) + strlen (newlevel) + 2; tmp = xmalloc (sizeof (char) * len); snprintf (tmp, len, "%s.%s", service, newlevel); conf = rc_strcatpaths (RC_CONFDIR, tmp, (char *) NULL); found = exists (conf); CHAR_FREE (conf); CHAR_FREE (tmp); if (!found) continue; } } else { /* Allow coldplugged services not to be in the runlevels list */ if (rc_service_state (service) & RC_SERVICE_COLDPLUGGED) continue; } /* We got this far! Or last check is to see if any any service that * going to be started depends on us */ rc_strlist_add (&stopdeps, service); deporder = rc_deptree_depends (deptree, types_n, (const char **) stopdeps, runlevel, RC_DEP_STRICT); rc_strlist_free (stopdeps); stopdeps = NULL; found = false; STRLIST_FOREACH (deporder, svc1, j) { STRLIST_FOREACH (start_services, svc2, k) if (strcmp (svc1, svc2) == 0) { found = true; break; } if (found) break; } rc_strlist_free (deporder); deporder = NULL; /* After all that we can finally stop the blighter! */ if (! found) { pid = rc_service_stop (service); if (pid > 0) { add_pid (pid); if (! parallel) { rc_waitpid (pid); remove_pid (pid); } } } } /* Wait for our services to finish */ wait_for_services (); /* Notify the plugins we have finished */ rc_plugin_run (RC_HOOK_RUNLEVEL_STOP_OUT, runlevel); rmdir (RC_STOPPING); /* Store the new runlevel */ if (newlevel) { rc_runlevel_set (newlevel); free (runlevel); runlevel = xstrdup (newlevel); setenv ("RC_SOFTLEVEL", runlevel, 1); } /* Run the halt script if needed */ if (strcmp (runlevel, RC_LEVEL_SHUTDOWN) == 0 || strcmp (runlevel, RC_LEVEL_REBOOT) == 0) { rc_logger_close (); execl (HALTSH, HALTSH, runlevel, (char *) NULL); eerrorx ("%s: unable to exec `%s': %s", applet, HALTSH, strerror (errno)); } /* Single user is done now */ if (strcmp (runlevel, RC_LEVEL_SINGLE) == 0) { if (exists (INTERACTIVE)) unlink (INTERACTIVE); sulogin (false); } mkdir (RC_STARTING, 0755); rc_plugin_run (RC_HOOK_RUNLEVEL_START_IN, runlevel); /* Re-add our coldplugged services if they stopped */ STRLIST_FOREACH (coldplugged_services, service, i) rc_service_mark (service, RC_SERVICE_COLDPLUGGED); /* Order the services to start */ deporder = rc_deptree_depends (deptree, types_nua, (const char **) start_services, runlevel, depoptions | RC_DEP_START); rc_strlist_free (start_services); start_services = deporder; deporder = NULL; #ifdef __linux__ /* mark any services skipped as started */ if (PREVLEVEL && strcmp (PREVLEVEL, "N") == 0) { if ((service = proc_getent ("noinitd"))) { char *p = service; char *token; while ((token = strsep (&p, ","))) rc_service_mark (token, RC_SERVICE_STARTED); free (service); } } #endif STRLIST_FOREACH (start_services, service, i) { if (rc_service_state (service) & RC_SERVICE_STOPPED) { if (! interactive) interactive = want_interactive (); if (interactive) { interactive_retry: printf ("\n"); einfo ("About to start the service %s", service); eindent (); einfo ("1) Start the service\t\t2) Skip the service"); einfo ("3) Continue boot process\t\t4) Exit to shell"); eoutdent (); interactive_option: switch (read_key (true)) { case '1': break; case '2': continue; case '3': interactive = false; break; case '4': sulogin (true); goto interactive_retry; default: goto interactive_option; } } pid = rc_service_start (service); /* Remember the pid if we're running in parallel */ if (pid > 0) { add_pid (pid); if (! parallel) { rc_waitpid (pid); remove_pid (pid); } } } } /* Wait for our services to finish */ wait_for_services (); rc_plugin_run (RC_HOOK_RUNLEVEL_START_OUT, runlevel); #ifdef __linux__ /* mark any services skipped as stopped */ if (PREVLEVEL && strcmp (PREVLEVEL, "N") == 0) { if ((service = proc_getent ("noinitd"))) { char *p = service; char *token; while ((token = strsep (&p, ","))) rc_service_mark (token, RC_SERVICE_STOPPED); free (service); } } #endif /* Store our interactive status for boot */ if (interactive && strcmp (runlevel, bootlevel) == 0) mark_interactive (); else { if (exists (INTERACTIVE)) unlink (INTERACTIVE); } /* If we're in the boot runlevel and we regenerated our dependencies * we need to delete them so that they are regenerated again in the * default runlevel as they may depend on things that are now available */ if (regen && strcmp (runlevel, bootlevel) == 0) unlink (RC_DEPTREE); return (EXIT_SUCCESS); }