emo/openrc
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
ae160bf293
openrc/src/rc.c

1298 lines
34 KiB
C
Raw Blame History

/*
rc.c
rc - manager for init scripts which control the startup, shutdown
and the running of daemons on a Gentoo system.
Also a multicall binary for various commands that can be used in shell
scripts to query service state, mark service state and provide the
Gentoo einfo family of informational functions.
Copyright 2007 Gentoo Foundation
Released under the GPLv2
*/
#define APPLET "rc"
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/utsname.h>
#include <sys/wait.h>
#include <errno.h>
#include <ctype.h>
#include <getopt.h>
#include <libgen.h>
#include <limits.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <string.h>
#include <termios.h>
#include <unistd.h>
#include "einfo.h"
#include "rc.h"
#include "rc-misc.h"
#include "rc-plugin.h"
#include "strlist.h"
#define INITSH RC_LIBDIR "sh/init.sh"
#define INITEARLYSH RC_LIBDIR "sh/init-early.sh"
#define HALTSH RC_INITDIR "halt.sh"
#define SULOGIN "/sbin/sulogin"
#define RC_SVCDIR_STARTING RC_SVCDIR "starting/"
#define RC_SVCDIR_INACTIVE RC_SVCDIR "inactive/"
#define RC_SVCDIR_STARTED RC_SVCDIR "started/"
#define RC_SVCDIR_COLDPLUGGED RC_SVCDIR "coldplugged/"
#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 *applet = 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 **types = 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 void cleanup (void)
{
pidlist_t *pl = service_pids;
rc_plugin_unload ();
if (! rc_in_plugin && termios_orig) {
tcsetattr (STDIN_FILENO, 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_free_deptree (deptree);
rc_strlist_free (types);
/* Clean runlevel start, stop markers */
if (! rc_in_plugin) {
if (rc_is_dir (RC_SVCDIR "softscripts.new"))
rc_rm_dir (RC_SVCDIR "softscripts.new", true);
if (rc_is_dir (RC_SVCDIR "softscripts.old"))
rc_rm_dir (RC_SVCDIR "softscripts.old", true);
}
free (applet);
}
static int do_e (int argc, char **argv)
{
int retval = EXIT_SUCCESS;
int i;
int l = 0;
char *message = NULL;
char *p;
char *fmt = NULL;
if (strcmp (applet, "eval_ecolors") == 0) {
printf ("GOOD='%s'\nWARN='%s'\nBAD='%s'\nHILITE='%s'\nBRACKET='%s'\nNORMAL='%s'\n",
ecolor (ecolor_good),
ecolor (ecolor_warn),
ecolor (ecolor_bad),
ecolor (ecolor_hilite),
ecolor (ecolor_bracket),
ecolor (ecolor_normal));
exit (EXIT_SUCCESS);
}
if (strcmp (applet, "eend") == 0 ||
strcmp (applet, "ewend") == 0 ||
strcmp (applet, "veend") == 0 ||
strcmp (applet, "vweend") == 0)
{
if (argc > 0) {
errno = 0;
retval = strtol (argv[0], NULL, 0);
if (errno != 0)
retval = EXIT_FAILURE;
else {
argc--;
argv++;
}
}
}
if (argc > 0) {
for (i = 0; i < argc; i++)
l += strlen (argv[i]) + 1;
message = rc_xmalloc (l);
p = message;
for (i = 0; i < argc; i++) {
if (i > 0)
*p++ = ' ';
memcpy (p, argv[i], strlen (argv[i]));
p += strlen (argv[i]);
}
*p = 0;
}
if (message)
fmt = rc_xstrdup ("%s");
if (strcmp (applet, "einfo") == 0)
einfo (fmt, message);
else if (strcmp (applet, "einfon") == 0)
einfon (fmt, message);
else if (strcmp (applet, "ewarn") == 0)
ewarn (fmt, message);
else if (strcmp (applet, "ewarnn") == 0)
ewarnn (fmt, message);
else if (strcmp (applet, "eerror") == 0) {
eerror (fmt, message);
retval = 1;
} else if (strcmp (applet, "eerrorn") == 0) {
eerrorn (fmt, message);
retval = 1;
} else if (strcmp (applet, "ebegin") == 0)
ebegin (fmt, message);
else if (strcmp (applet, "eend") == 0)
eend (retval, fmt, message);
else if (strcmp (applet, "ewend") == 0)
ewend (retval, fmt, message);
else if (strcmp (applet, "veinfo") == 0)
einfov (fmt, message);
else if (strcmp (applet, "veinfon") == 0)
einfovn (fmt, message);
else if (strcmp (applet, "vewarn") == 0)
ewarnv (fmt, message);
else if (strcmp (applet, "vewarnn") == 0)
ewarnvn (fmt, message);
else if (strcmp (applet, "vebegin") == 0)
ebeginv (fmt, message);
else if (strcmp (applet, "veend") == 0)
eendv (retval, fmt, message);
else if (strcmp (applet, "vewend") == 0)
ewendv (retval, fmt, message);
else if (strcmp (applet, "eindent") == 0)
eindent ();
else if (strcmp (applet, "eoutdent") == 0)
eoutdent ();
else if (strcmp (applet, "veindent") == 0)
eindentv ();
else if (strcmp (applet, "veoutdent") == 0)
eoutdentv ();
else if (strcmp (applet, "eflush") == 0)
eflush ();
else {
eerror ("%s: unknown applet", applet);
retval = EXIT_FAILURE;
}
if (fmt)
free (fmt);
if (message)
free (message);
return (retval);
}
static int do_service (int argc, char **argv)
{
bool ok = false;
if (argc < 1 || ! argv[0] || strlen (argv[0]) == 0)
eerrorx ("%s: no service specified", applet);
if (strcmp (applet, "service_started") == 0)
ok = rc_service_state (argv[0], rc_service_started);
else if (strcmp (applet, "service_stopped") == 0)
ok = rc_service_state (argv[0], rc_service_stopped);
else if (strcmp (applet, "service_inactive") == 0)
ok = rc_service_state (argv[0], rc_service_inactive);
else if (strcmp (applet, "service_starting") == 0)
ok = rc_service_state (argv[0], rc_service_starting);
else if (strcmp (applet, "service_stopping") == 0)
ok = rc_service_state (argv[0], rc_service_stopping);
else if (strcmp (applet, "service_coldplugged") == 0)
ok = rc_service_state (argv[0], rc_service_coldplugged);
else if (strcmp (applet, "service_wasinactive") == 0)
ok = rc_service_state (argv[0], rc_service_wasinactive);
else if (strcmp (applet, "service_started_daemon") == 0) {
int idx = 0;
if (argc > 2)
sscanf (argv[2], "%d", &idx);
exit (rc_service_started_daemon (argv[0], argv[1], idx)
? 0 : 1);
} else
eerrorx ("%s: unknown applet", applet);
return (ok ? EXIT_SUCCESS : EXIT_FAILURE);
}
static int do_mark_service (int argc, char **argv)
{
bool ok = false;
char *svcname = getenv ("SVCNAME");
if (argc < 1 || ! argv[0] || strlen (argv[0]) == 0)
eerrorx ("%s: no service specified", applet);
if (strcmp (applet, "mark_service_started") == 0)
ok = rc_mark_service (argv[0], rc_service_started);
else if (strcmp (applet, "mark_service_stopped") == 0)
ok = rc_mark_service (argv[0], rc_service_stopped);
else if (strcmp (applet, "mark_service_inactive") == 0)
ok = rc_mark_service (argv[0], rc_service_inactive);
else if (strcmp (applet, "mark_service_starting") == 0)
ok = rc_mark_service (argv[0], rc_service_starting);
else if (strcmp (applet, "mark_service_stopping") == 0)
ok = rc_mark_service (argv[0], rc_service_stopping);
else if (strcmp (applet, "mark_service_coldplugged") == 0)
ok = rc_mark_service (argv[0], rc_service_coldplugged);
else
eerrorx ("%s: unknown applet", applet);
/* If we're marking ourselves then we need to inform our parent runscript
process so they do not mark us based on our exit code */
if (ok && svcname && strcmp (svcname, argv[0]) == 0) {
char *runscript_pid = getenv ("RC_RUNSCRIPT_PID");
char *mtime;
pid_t pid = 0;
int l;
if (runscript_pid && sscanf (runscript_pid, "%d", &pid) == 1)
if (kill (pid, SIGHUP) != 0)
eerror ("%s: failed to signal parent %d: %s",
applet, pid, strerror (errno));
/* Remove the exclsive time test. This ensures that it's not
in control as well */
l = strlen (RC_SVCDIR "exclusive") +
strlen (svcname) +
strlen (runscript_pid) +
4;
mtime = rc_xmalloc (l);
snprintf (mtime, l, RC_SVCDIR "exclusive/%s.%s",
svcname, runscript_pid);
if (rc_exists (mtime) && unlink (mtime) != 0)
eerror ("%s: unlink: %s", applet, strerror (errno));
free (mtime);
}
return (ok ? EXIT_SUCCESS : EXIT_FAILURE);
}
static int do_options (int argc, char **argv)
{
bool ok = false;
char *service = getenv ("SVCNAME");
if (! service)
eerrorx ("%s: no service specified", applet);
if (argc < 1 || ! argv[0] || strlen (argv[0]) == 0)
eerrorx ("%s: no option specified", applet);
if (strcmp (applet, "get_options") == 0) {
char buffer[1024];
memset (buffer, 0, 1024);
ok = rc_get_service_option (service, argv[0], buffer);
if (ok)
printf ("%s", buffer);
} else if (strcmp (applet, "save_options") == 0)
ok = rc_set_service_option (service, argv[0], argv[1]);
else
eerrorx ("%s: unknown applet", applet);
return (ok ? EXIT_SUCCESS : EXIT_FAILURE);
}
static char read_key (bool block)
{
struct termios termios;
char c = 0;
if (! isatty (STDIN_FILENO))
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 = rc_xmalloc (sizeof (struct termios));
tcgetattr (STDIN_FILENO, termios_orig);
}
tcgetattr (STDIN_FILENO, &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 (STDIN_FILENO, TCSANOW, &termios);
read (STDIN_FILENO, &c, 1);
tcsetattr (STDIN_FILENO, TCSANOW, termios_orig);
return (c);
}
static bool want_interactive (void)
{
char c;
if (! rc_is_env ("RC_INTERACTIVE", "yes"))
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)
{
#ifdef __linux__
char *e = getenv ("RC_SYS");
/* VPS systems cannot do an 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 = rc_filter_env ();
if (cont) {
int status = 0;
#ifdef __linux__
char *tty = ttyname (fileno (stdout));
#endif
pid_t pid = vfork ();
if (pid == -1)
eerrorx ("%s: vfork: %s", applet, strerror (errno));
if (pid == 0) {
#ifdef __linux__
if (tty)
execle (SULOGIN, SULOGIN, tty, (char *) NULL, newenv);
else
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);
}
waitpid (pid, &status, 0);
} else {
#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
}
}
static void single_user (void)
{
#ifdef __linux__
execl ("/sbin/telinit", "/sbin/telinit", "S", (char *) NULL);
eerrorx ("%s: unable to exec `/sbin/telinit': %s",
applet, strerror (errno));
#else
if (kill (1, SIGTERM) != 0)
eerrorx ("%s: unable to send SIGTERM to init (pid 1): %s",
applet, strerror (errno));
exit (EXIT_SUCCESS);
#endif
}
static void set_ksoftlevel (const char *runlevel)
{
FILE *fp;
if (! runlevel ||
strcmp (runlevel, RC_LEVEL_BOOT) == 0 ||
strcmp (runlevel, RC_LEVEL_SINGLE) == 0 ||
strcmp (runlevel, RC_LEVEL_SYSINIT) == 0)
{
if (rc_exists (RC_SVCDIR "ksoftlevel") &&
unlink (RC_SVCDIR "ksoftlevel") != 0)
eerror ("unlink `%s': %s", RC_SVCDIR "ksoftlevel", strerror (errno));
return;
}
if (! (fp = fopen (RC_SVCDIR "ksoftlevel", "w"))) {
eerror ("fopen `%s': %s", RC_SVCDIR "ksoftlevel", strerror (errno));
return;
}
fprintf (fp, "%s", runlevel);
fclose (fp);
}
static void wait_for_services ()
{
int status = 0;
while (wait (&status) != -1);
}
static void add_pid (pid_t pid)
{
pidlist_t *sp = service_pids;
if (sp) {
while (sp->next)
sp = sp->next;
sp->next = rc_xmalloc (sizeof (pidlist_t));
sp = sp->next;
} else
sp = service_pids = rc_xmalloc (sizeof (pidlist_t));
memset (sp, 0, sizeof (pidlist_t));
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 handle_signal (int sig)
{
int serrno = errno;
char signame[10] = { '\0' };
char *run;
char *prev;
pidlist_t *pl;
pid_t pid;
int status = 0;
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 SIGINT:
if (! signame[0])
snprintf (signame, sizeof (signame), "SIGINT");
case SIGTERM:
if (! signame[0])
snprintf (signame, sizeof (signame), "SIGTERM");
case SIGQUIT:
if (! signame[0])
snprintf (signame, sizeof (signame), "SIGQUIT");
eerrorx ("%s: caught %s, aborting", applet, signame);
case SIGUSR1:
eerror ("rc: Aborting!");
/* Kill any running services we have started */
signal (SIGCHLD, SIG_IGN);
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 */
run = getenv ("RUNLEVEL");
prev = getenv ("PREVLEVEL");
if ((prev &&
(strcmp (prev, "S") == 0 ||
strcmp (prev, "1") == 0)) ||
(run &&
(strcmp (run, "S") == 0 ||
strcmp (run, "1") == 0)))
single_user ();
exit (EXIT_FAILURE);
break;
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)
exit (EXIT_FAILURE);
}
#include "_usage.h"
#define getoptstring getoptstring_COMMON
static struct option longopts[] = {
longopts_COMMON
{ NULL, 0, NULL, 0}
};
#include "_usage.c"
int main (int argc, char **argv)
{
char *RUNLEVEL = NULL;
char *PREVLEVEL = NULL;
char *runlevel = NULL;
char *newlevel = NULL;
char *service = NULL;
char **deporder = NULL;
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;
if (argv[0])
applet = rc_xstrdup (basename (argv[0]));
if (! applet)
eerrorx ("arguments required");
argc--;
argv++;
/* Handle multicall stuff */
if (applet[0] == 'e' || (applet[0] == 'v' && applet[1] == 'e'))
exit (do_e (argc, argv));
if (strncmp (applet, "service_", strlen ("service_")) == 0)
exit (do_service (argc, argv));
if (strcmp (applet, "get_options") == 0 ||
strcmp (applet, "save_options") == 0)
exit (do_options (argc, argv));
if (strncmp (applet, "mark_service_", strlen ("mark_service_")) == 0)
exit (do_mark_service (argc, argv));
if (strcmp (applet, "is_runlevel_start") == 0)
exit (rc_runlevel_starting () ? 0 : 1);
else if (strcmp (applet, "is_runlevel_stop") == 0)
exit (rc_runlevel_stopping () ? 0 : 1);
if (strcmp (applet, "rc-abort") == 0) {
char *p = getenv ("RC_PID");
pid_t pid = 0;
if (p && sscanf (p, "%d", &pid) == 1) {
if (kill (pid, SIGUSR1) != 0)
eerrorx ("rc-abort: failed to signal parent %d: %s",
pid, strerror (errno));
exit (EXIT_SUCCESS);
}
exit (EXIT_FAILURE);
}
if (strcmp (applet, "rc" ) != 0)
eerrorx ("%s: unknown applet", applet);
atexit (cleanup);
/* Change dir to / to ensure all scripts don't use stuff in pwd */
chdir ("/");
/* Setup a signal handler */
signal (SIGINT, handle_signal);
signal (SIGQUIT, handle_signal);
signal (SIGTERM, handle_signal);
signal (SIGUSR1, handle_signal);
/* Ensure our environment is pure
Also, add our configuration to it */
env = rc_filter_env ();
env = rc_config_env (env);
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 = rc_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_RC_COMMON_GETOPT
}
}
newlevel = argv[optind++];
/* 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);
/* Enable logging */
setenv ("RC_ELOG", "rc", 1);
/* Export our PID */
snprintf (pidstr, sizeof (pidstr), "%d", getpid ());
setenv ("RC_PID", pidstr, 1);
interactive = rc_exists (INTERACTIVE);
rc_plugin_load ();
/* 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");
if (RUNLEVEL && newlevel) {
if (strcmp (RUNLEVEL, "S") == 0 || strcmp (RUNLEVEL, "1") == 0) {
/* OK, we're either in runlevel 1 or single user mode */
if (strcmp (newlevel, RC_LEVEL_SYSINIT) == 0) {
struct utsname uts;
#ifdef __linux__
FILE *fp;
#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 (rc_exists (INITEARLYSH))
run_script (INITEARLYSH);
uname (&uts);
printf ("\n");
printf (" %sGentoo/%s; %shttp://www.gentoo.org/%s"
"\n Copyright 1999-2007 Gentoo Foundation; "
"Distributed under the GPLv2\n\n",
ecolor (ecolor_good), uts.sysname, ecolor (ecolor_bracket),
ecolor (ecolor_normal));
if (rc_is_env ("RC_INTERACTIVE", "yes"))
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);
/* If we requested a softlevel, save it now */
#ifdef __linux__
set_ksoftlevel (NULL);
if ((fp = fopen ("/proc/cmdline", "r"))) {
char buffer[RC_LINEBUFFER];
char *soft;
memset (buffer, 0, sizeof (buffer));
if (fgets (buffer, RC_LINEBUFFER, fp) &&
(soft = strstr (buffer, "softlevel=")))
{
i = soft - buffer;
if (i == 0 || buffer[i - 1] == ' ') {
char *level;
/* Trim the trailing carriage return if present */
i = strlen (buffer) - 1;
if (buffer[i] == '\n')
buffer[i] = 0;
soft += strlen ("softlevel=");
level = strsep (&soft, " ");
set_ksoftlevel (level);
}
}
fclose (fp);
}
#endif
rc_plugin_run (rc_hook_runlevel_start_out, newlevel);
if (want_interactive ())
mark_interactive ();
exit (EXIT_SUCCESS);
}
#ifdef __linux__
/* Parse the inittab file so we can work out the level to telinit */
if (strcmp (newlevel, RC_LEVEL_BOOT) != 0 &&
strcmp (newlevel, RC_LEVEL_SINGLE) != 0)
{
char **inittab = rc_get_list (NULL, "/etc/inittab");
char *line;
char *p;
char *token;
char lvl[2] = {0, 0};
STRLIST_FOREACH (inittab, line, i) {
p = line;
token = strsep (&p, ":");
if (! token || token[0] != 'l')
continue;
if ((token = strsep (&p, ":")) == NULL)
continue;
/* Snag the level */
lvl[0] = token[0];
/* The name is spaced after this */
if ((token = strsep (&p, " ")) == NULL)
continue;
if ((token = strsep (&p, " ")) == NULL)
continue;
if (strcmp (token, newlevel) == 0)
break;
}
rc_strlist_free (inittab);
/* We have a level, so telinit into it */
if (lvl[0] == 0) {
eerrorx ("%s: couldn't find a runlevel called `%s'",
applet, newlevel);
} else {
execl ("/sbin/telinit", "/sbin/telinit", lvl, (char *) NULL);
eerrorx ("%s: unable to exec `/sbin/telinit': %s",
applet, strerror (errno));
}
}
#endif
}
}
/* Check we're in the runlevel requested, ie from
rc single
rc shutdown
rc reboot
*/
if (newlevel) {
if (strcmp (newlevel, RC_LEVEL_SINGLE) == 0) {
if (! RUNLEVEL ||
(strcmp (RUNLEVEL, "S") != 0 &&
strcmp (RUNLEVEL, "1") != 0))
{
/* Remember the current runlevel for when we come back */
set_ksoftlevel (runlevel);
single_user ();
}
} else if (strcmp (newlevel, RC_LEVEL_REBOOT) == 0) {
if (! RUNLEVEL ||
strcmp (RUNLEVEL, "6") != 0)
{
execl ("/sbin/shutdown", "/sbin/shutdown", "-r", "now", (char *) NULL);
eerrorx ("%s: unable to exec `/sbin/shutdown': %s",
applet, strerror (errno));
}
} else if (strcmp (newlevel, RC_LEVEL_SHUTDOWN) == 0) {
if (! RUNLEVEL ||
strcmp (RUNLEVEL, "0") != 0)
{
execl ("/sbin/shutdown", "/sbin/shutdown",
#ifdef __linux
"-h",
#else
"-p",
#endif
"now", (char *) NULL);
eerrorx ("%s: unable to exec `/sbin/shutdown': %s",
applet, strerror (errno));
}
}
}
/* Export our current softlevel */
runlevel = rc_get_runlevel ();
/* Now we start handling our children */
signal (SIGCHLD, handle_signal);
/* If we're in the default runlevel and ksoftlevel exists, we should use
that instead */
if (newlevel &&
rc_exists (RC_SVCDIR "ksoftlevel") &&
strcmp (newlevel, RC_LEVEL_DEFAULT) == 0)
{
/* 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))
{
FILE *fp;
if (! (fp = fopen (RC_SVCDIR "ksoftlevel", "r")))
eerror ("fopen `%s': %s", RC_SVCDIR "ksoftlevel",
strerror (errno));
else {
if (fgets (ksoftbuffer, sizeof (ksoftbuffer), fp)) {
i = strlen (ksoftbuffer) - 1;
if (ksoftbuffer[i] == '\n')
ksoftbuffer[i] = 0;
newlevel = ksoftbuffer;
}
fclose (fp);
}
} else
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_set_runlevel (newlevel);
setenv ("RC_SOFTLEVEL", newlevel, 1);
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) {
tmp = rc_strcatpaths (RC_RUNLEVELDIR, newlevel, (char *) NULL);
if (! rc_is_dir (tmp))
eerrorx ("%s: is not a valid runlevel", newlevel);
CHAR_FREE (tmp);
}
/* Load our deptree now */
if ((deptree = rc_load_deptree ()) == NULL)
eerrorx ("failed to load deptree");
/* Clean the failed services state dir now */
if (rc_is_dir (RC_SVCDIR "failed"))
rc_rm_dir (RC_SVCDIR "failed", false);
mkdir (RC_SVCDIR "/softscripts.new", 0755);
#ifdef __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 (rc_is_dir (DEVBOOT)) {
start_services = rc_ls_dir (NULL, DEVBOOT, RC_LS_INITD);
rc_rm_dir (DEVBOOT, true);
STRLIST_FOREACH (start_services, service, i)
if (rc_allow_plug (service))
rc_mark_service (service, rc_service_coldplugged);
/* We need to dump this list now.
This may seem redunant, but only Linux needs this and saves on
code bloat. */
rc_strlist_free (start_services);
start_services = NULL;
}
#else
/* BSD's on the other hand populate /dev automagically and use devd.
The only downside of this approach and ours is that we have to hard code
the device node to the init script to simulate the coldplug into
runlevel for our dependency tree to work. */
if (newlevel && strcmp (newlevel, RC_LEVEL_BOOT) == 0 &&
(strcmp (runlevel, RC_LEVEL_SINGLE) == 0 ||
strcmp (runlevel, RC_LEVEL_SYSINIT) == 0) &&
rc_is_env ("RC_COLDPLUG", "yes"))
{
/* The net interfaces are easy - they're all in net /dev/net :) */
start_services = rc_ls_dir (NULL, "/dev/net", 0);
STRLIST_FOREACH (start_services, service, i) {
j = (strlen ("net.") + strlen (service) + 1);
tmp = rc_xmalloc (sizeof (char *) * j);
snprintf (tmp, j, "net.%s", service);
if (rc_service_exists (tmp) && rc_allow_plug (tmp))
rc_mark_service (tmp, rc_service_coldplugged);
CHAR_FREE (tmp);
}
rc_strlist_free (start_services);
/* The mice are a little more tricky.
If we coldplug anything else, we'll probably do it here. */
start_services = rc_ls_dir (NULL, "/dev", 0);
STRLIST_FOREACH (start_services, service, i) {
if (strncmp (service, "psm", 3) == 0 ||
strncmp (service, "ums", 3) == 0)
{
char *p = service + 3;
if (p && isdigit (*p)) {
j = (strlen ("moused.") + strlen (service) + 1);
tmp = rc_xmalloc (sizeof (char *) * j);
snprintf (tmp, j, "moused.%s", service);
if (rc_service_exists (tmp) && rc_allow_plug (tmp))
rc_mark_service (tmp, rc_service_coldplugged);
CHAR_FREE (tmp);
}
}
}
rc_strlist_free (start_services);
start_services = NULL;
}
#endif
/* Build a list of all services to stop and then work out the
correct order for stopping them */
stop_services = rc_ls_dir (stop_services, RC_SVCDIR_STARTING, RC_LS_INITD);
stop_services = rc_ls_dir (stop_services, RC_SVCDIR_INACTIVE, RC_LS_INITD);
stop_services = rc_ls_dir (stop_services, RC_SVCDIR_STARTED, RC_LS_INITD);
types = rc_strlist_add (NULL, "ineed");
types = rc_strlist_add (types, "iuse");
types = rc_strlist_add (types, "iafter");
deporder = rc_get_depends (deptree, types, stop_services,
runlevel, depoptions);
rc_strlist_free (stop_services);
rc_strlist_free (types);
stop_services = deporder;
deporder = NULL;
types = NULL;
rc_strlist_reverse (stop_services);
/* Load our list of coldplugged services */
coldplugged_services = rc_ls_dir (coldplugged_services,
RC_SVCDIR_COLDPLUGGED, RC_LS_INITD);
/* Load our start services now.
We have different rules dependent on runlevel. */
if (newlevel && strcmp (newlevel, RC_LEVEL_BOOT) == 0) {
if (coldplugged_services) {
einfon ("Device initiated services:");
STRLIST_FOREACH (coldplugged_services, service, i) {
printf (" %s", service);
start_services = rc_strlist_add (start_services, service);
}
printf ("\n");
}
tmp = rc_strcatpaths (RC_RUNLEVELDIR, newlevel ? newlevel : runlevel,
(char *) NULL);
start_services = rc_ls_dir (start_services, tmp, RC_LS_INITD);
CHAR_FREE (tmp);
} else {
/* Store our list of coldplugged services */
coldplugged_services = rc_ls_dir (coldplugged_services, RC_SVCDIR_COLDPLUGGED,
RC_LS_INITD);
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_ls_dir (start_services, RC_RUNLEVELDIR RC_LEVEL_BOOT,
RC_LS_INITD);
STRLIST_FOREACH (coldplugged_services, service, i)
start_services = rc_strlist_add (start_services, service);
tmp = rc_strcatpaths (RC_RUNLEVELDIR,
newlevel ? newlevel : runlevel, (char *) NULL);
start_services = rc_ls_dir (start_services, tmp, RC_LS_INITD);
CHAR_FREE (tmp);
}
}
/* Save out softlevel now */
if (going_down)
rc_set_runlevel (newlevel);
types = rc_strlist_add (NULL, "needsme");
types = rc_strlist_add (types, "usesme");
/* 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_t pid = rc_stop_service (service);
if (pid > 0 && ! rc_is_env ("RC_PARALLEL", "yes"))
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) {
int len;
if (! newlevel)
continue;
len = strlen (service) + strlen (runlevel) + 2;
tmp = rc_xmalloc (sizeof (char *) * len);
snprintf (tmp, len, "%s.%s", service, runlevel);
conf = rc_strcatpaths (RC_CONFDIR, tmp, (char *) NULL);
found = rc_exists (conf);
CHAR_FREE (conf);
CHAR_FREE (tmp);
if (! found) {
len = strlen (service) + strlen (newlevel) + 2;
tmp = rc_xmalloc (sizeof (char *) * len);
snprintf (tmp, len, "%s.%s", service, newlevel);
conf = rc_strcatpaths (RC_CONFDIR, tmp, (char *) NULL);
found = rc_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 */
stopdeps = rc_strlist_add (stopdeps, service);
deporder = rc_get_depends (deptree, types, 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_t pid = rc_stop_service (service);
if (pid > 0 && ! rc_is_env ("RC_PARALLEL", "yes"))
rc_waitpid (pid);
}
}
rc_strlist_free (types);
types = NULL;
/* 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_SVCDIR "/softscripts.new");
/* Store the new runlevel */
if (newlevel) {
rc_set_runlevel (newlevel);
runlevel = 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)
{
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 (rc_exists (INTERACTIVE))
unlink (INTERACTIVE);
sulogin (false);
}
mkdir (RC_SVCDIR "softscripts.old", 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_mark_service (service, rc_service_coldplugged);
/* Order the services to start */
types = rc_strlist_add (NULL, "ineed");
types = rc_strlist_add (types, "iuse");
types = rc_strlist_add (types, "iafter");
deporder = rc_get_depends (deptree, types, start_services,
runlevel, depoptions);
rc_strlist_free (types);
types = NULL;
rc_strlist_free (start_services);
start_services = deporder;
deporder = NULL;
STRLIST_FOREACH (start_services, service, i) {
if (rc_service_state (service, rc_service_stopped)) {
pid_t pid;
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;
}
}
/* Remember the pid if we're running in parallel */
if ((pid = rc_start_service (service)))
add_pid (pid);
if (! rc_is_env ("RC_PARALLEL", "yes")) {
rc_waitpid (pid);
remove_pid (pid);
}
}
}
/* Wait for our services to finish */
wait_for_services ();
rc_plugin_run (rc_hook_runlevel_start_out, runlevel);
/* Store our interactive status for boot */
if (interactive && strcmp (runlevel, RC_LEVEL_BOOT) == 0)
mark_interactive ();
else {
if (rc_exists (INTERACTIVE))
unlink (INTERACTIVE);
}
return (EXIT_SUCCESS);
}
Reference in New Issue View Git Blame Copy Permalink