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-rw-r--r--src/rc.c175
1 files changed, 98 insertions, 77 deletions
diff --git a/src/rc.c b/src/rc.c
index d5482d15..375800af 100644
--- a/src/rc.c
+++ b/src/rc.c
@@ -56,16 +56,14 @@ extern char **environ;
static char *applet = NULL;
static char **env = NULL;
static char **newenv = NULL;
-static char **coldplugged_services;
+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 *mycmd = NULL;
-static char *myarg = NULL;
static char *tmp = NULL;
-struct termios *termios_orig;
+struct termios *termios_orig = NULL;
static void cleanup (void)
{
@@ -76,24 +74,13 @@ static void cleanup (void)
free (termios_orig);
}
- if (env)
- rc_strlist_free (env);
- if (newenv)
- rc_strlist_free (newenv);
- if (coldplugged_services)
- rc_strlist_free (coldplugged_services);
- if (stop_services)
- rc_strlist_free (stop_services);
- if (start_services)
- rc_strlist_free (start_services);
- if (deptree)
- rc_free_deptree (deptree);
- if (types)
- rc_strlist_free (types);
- if (mycmd)
- free (mycmd);
- if (myarg)
- free (myarg);
+ 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_is_dir (RC_SVCDIR "softscripts.new"))
@@ -101,8 +88,7 @@ static void cleanup (void)
if (rc_is_dir (RC_SVCDIR "softscripts.old"))
rc_rm_dir (RC_SVCDIR "softscripts.old", true);
- if (applet)
- free (applet);
+ free (applet);
}
static int do_e (int argc, char **argv)
@@ -335,6 +321,10 @@ static char read_key (bool block)
struct termios termios;
char c = 0;
+ /* This locks up rc for some reason!
+ * Why? it used to work fine... */
+ return 0;
+
if (! isatty (STDIN_FILENO))
return (false);
@@ -378,33 +368,54 @@ static void mark_interactive (void)
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));
+ }
+
if (cont) {
int status = 0;
- pid_t pid = fork();
+ pid_t pid = vfork();
if (pid == -1)
- eerrorx ("%s: fork: %s", applet, strerror (errno));
+ eerrorx ("%s: vfork: %s", applet, strerror (errno));
if (pid == 0) {
newenv = rc_filter_env ();
- mycmd = rc_xstrdup ("/sbin/sulogin");
- myarg = rc_xstrdup (getenv ("CONSOLE"));
- execle (mycmd, mycmd, myarg, (char *) NULL, newenv);
- eerrorx ("%s: unable to exec `/sbin/sulogin': %s", applet, strerror (errno));
+ execl ("/sbin/sulogin", "/sbin/sulogin",
+ getenv ("CONSOLE"), (char *) NULL, newenv);
+ eerror ("%s: unable to exec `/sbin/sulogin': %s", applet,
+ strerror (errno));
+ _exit (EXIT_FAILURE);
}
waitpid (pid, &status, 0);
} else {
newenv = rc_filter_env ();
- mycmd = rc_xstrdup ("/sbin/sulogin");
- myarg = rc_xstrdup (getenv ("CONSOLE"));
- execle (mycmd, mycmd, myarg, (char *) NULL, newenv);
+ execl ("/sbin/sulogin", "/sbin/sulogin",
+ getenv ("CONSOLE"), (char *) NULL, newenv);
eerrorx ("%s: unable to exec `/sbin/sulogin': %s", applet, strerror (errno));
}
#else
- /* Appease gcc */
exit (cont ? EXIT_FAILURE : 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;
@@ -457,6 +468,18 @@ static void handle_signal (int sig)
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 (SIGTERM, SIG_IGN);
+ killpg (getpgrp (), SIGTERM);
+
+ /* If we're in boot runlevel then change into single-user mode */
+ if (strcmp (rc_get_runlevel (), RC_LEVEL_BOOT) == 0)
+ single_user ();
+
+ exit (EXIT_FAILURE);
+ break;
default:
eerror ("%s: caught unknown signal %d", applet, sig);
@@ -480,6 +503,7 @@ int main (int argc, char **argv)
bool interactive = false;
int depoptions = RC_DEP_STRICT | RC_DEP_TRACE;
char ksoftbuffer [PATH_MAX];
+ char pidstr[6];
if (argv[0])
applet = rc_xstrdup (basename (argv[0]));
@@ -509,6 +533,19 @@ int main (int argc, char **argv)
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);
@@ -520,10 +557,14 @@ int main (int argc, char **argv)
atexit (cleanup);
newlevel = argv[0];
+ /* Start a new process group */
+ setpgrp();
+
/* 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 */
@@ -563,6 +604,10 @@ int main (int argc, char **argv)
/* 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 ();
@@ -599,14 +644,14 @@ int main (int argc, char **argv)
setenv ("RC_SOFTLEVEL", newlevel, 1);
rc_plugin_run (rc_hook_runlevel_start_in, newlevel);
- if ((pid = fork ()) == -1)
- eerrorx ("%s: fork: %s", applet, strerror (errno));
+ if ((pid = vfork ()) == -1)
+ eerrorx ("%s: vfork: %s", applet, strerror (errno));
if (pid == 0) {
- mycmd = rc_xstrdup (INITSH);
- execl (mycmd, mycmd, (char *) NULL);
- eerrorx ("%s: unable to exec `" INITSH "': %s",
- applet, strerror (errno));
+ execl (INITSH, INITSH, (char *) NULL);
+ eerror ("%s: unable to exec `" INITSH "': %s",
+ applet, strerror (errno));
+ _exit (EXIT_FAILURE);
}
do {
@@ -695,9 +740,7 @@ int main (int argc, char **argv)
eerrorx ("%s: couldn't find a runlevel called `%s'",
applet, newlevel);
} else {
- mycmd = rc_xstrdup ("/sbin/telinit");
- myarg = rc_xstrdup (lvl);
- execl (mycmd, mycmd, myarg, (char *) NULL);
+ execl ("/sbin/telinit", "/sbin/telinit", lvl, (char *) NULL);
eerrorx ("%s: unable to exec `/sbin/telinit': %s",
applet, strerror (errno));
}
@@ -712,11 +755,6 @@ int main (int argc, char **argv)
rc reboot
*/
if (newlevel) {
- if (myarg) {
- free (myarg);
- myarg = NULL;
- }
-
if (strcmp (newlevel, RC_LEVEL_SINGLE) == 0) {
if (! RUNLEVEL ||
(strcmp (RUNLEVEL, "S") != 0 &&
@@ -724,44 +762,29 @@ int main (int argc, char **argv)
{
/* Remember the current runlevel for when we come back */
set_ksoftlevel (runlevel);
-#ifdef __linux__
- mycmd = rc_xstrdup ("/sbin/telinit");
- myarg = rc_xstrdup ("S");
- execl (mycmd, mycmd, myarg, (char *) NULL);
- eerrorx ("%s: unable to exec `/%s': %s",
- mycmd, 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
+ single_user ();
}
} else if (strcmp (newlevel, RC_LEVEL_REBOOT) == 0) {
if (! RUNLEVEL ||
strcmp (RUNLEVEL, "6") != 0)
{
- mycmd = rc_xstrdup ("/sbin/shutdown");
- myarg = rc_xstrdup ("-r");
- tmp = rc_xstrdup ("now");
- execl (mycmd, mycmd, myarg, tmp, (char *) NULL);
- eerrorx ("%s: unable to exec `%s': %s",
- mycmd, applet, strerror (errno));
+ 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)
{
- mycmd = rc_xstrdup ("/sbin/shutdown");
-#ifdef __linux__
- myarg = rc_xstrdup ("-h");
+ execl ("/sbin/shutdown", "/sbin/shutdown",
+#ifdef __linux
+ "-h",
#else
- myarg = rc_xstrdup ("-p");
+ "-p",
#endif
- tmp = rc_xstrdup ("now");
- execl (mycmd, mycmd, myarg, tmp, (char *) NULL);
- eerrorx ("%s: unable to exec `%s': %s",
- mycmd, applet, strerror (errno));
+ "now", (char *) NULL);
+ eerrorx ("%s: unable to exec `/sbin/shutdown': %s",
+ applet, strerror (errno));
}
}
}
@@ -1060,9 +1083,7 @@ int main (int argc, char **argv)
if (strcmp (runlevel, RC_LEVEL_SHUTDOWN) == 0 ||
strcmp (runlevel, RC_LEVEL_REBOOT) == 0)
{
- mycmd = rc_xstrdup (HALTSH);
- myarg = rc_xstrdup (runlevel);
- execl (mycmd, mycmd, myarg, (char *) NULL);
+ execl (HALTSH, HALTSH, runlevel, (char *) NULL);
eerrorx ("%s: unable to exec `%s': %s",
applet, HALTSH, strerror (errno));
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-27 08:57:40 +0000