int
main (int argc,
char **argv)
{
GMainLoop *main_loop;
GOptionContext *context;
DBusGConnection *connection;
MdmSlave *slave;
static char *display_id = NULL;
MdmSignalHandler *signal_handler;
static GOptionEntry entries [] = {
{ "display-id", 0, 0, G_OPTION_ARG_STRING, &display_id, N_("Display ID"), N_("ID") },
{ NULL }
};
bindtextdomain (GETTEXT_PACKAGE, MATELOCALEDIR);
textdomain (GETTEXT_PACKAGE);
setlocale (LC_ALL, "");
mdm_set_fatal_warnings_if_unstable ();
g_type_init ();
context = g_option_context_new (_("MATE Display Manager Slave"));
g_option_context_add_main_entries (context, entries, NULL);
g_option_context_parse (context, &argc, &argv, NULL);
g_option_context_free (context);
connection = get_system_bus ();
if (connection == NULL) {
goto out;
}
mdm_xerrors_init ();
mdm_log_init ();
settings = mdm_settings_new ();
if (settings == NULL) {
g_warning ("Unable to initialize settings");
goto out;
}
if (! mdm_settings_direct_init (settings, DATADIR "/mdm/mdm.schemas", "/")) {
g_warning ("Unable to initialize settings");
goto out;
}
mdm_log_set_debug (is_debug_set ());
if (display_id == NULL) {
g_critical ("No display ID set");
exit (1);
}
main_loop = g_main_loop_new (NULL, FALSE);
signal_handler = mdm_signal_handler_new ();
mdm_signal_handler_set_fatal_func (signal_handler,
(GDestroyNotify)g_main_loop_quit,
main_loop);
mdm_signal_handler_add (signal_handler, SIGTERM, signal_cb, NULL);
mdm_signal_handler_add (signal_handler, SIGINT, signal_cb, NULL);
mdm_signal_handler_add (signal_handler, SIGILL, signal_cb, NULL);
mdm_signal_handler_add (signal_handler, SIGBUS, signal_cb, NULL);
mdm_signal_handler_add (signal_handler, SIGFPE, signal_cb, NULL);
mdm_signal_handler_add (signal_handler, SIGHUP, signal_cb, NULL);
mdm_signal_handler_add (signal_handler, SIGSEGV, signal_cb, NULL);
mdm_signal_handler_add (signal_handler, SIGABRT, signal_cb, NULL);
mdm_signal_handler_add (signal_handler, SIGUSR1, signal_cb, NULL);
mdm_signal_handler_add (signal_handler, SIGUSR2, signal_cb, NULL);
slave = mdm_product_slave_new (display_id);
if (slave == NULL) {
goto out;
}
g_signal_connect (slave,
"stopped",
G_CALLBACK (on_slave_stopped),
main_loop);
mdm_slave_start (slave);
g_main_loop_run (main_loop);
if (slave != NULL) {
g_object_unref (slave);
}
if (signal_handler != NULL) {
g_object_unref (signal_handler);
}
if (main_loop != NULL) {
g_main_loop_unref (main_loop);
}
out:
g_debug ("Slave finished");
return mdm_return_code;
}
gboolean
mdm_display_manage (MdmDisplay *d)
{
pid_t pid;
int fds[2];
if (!d)
return FALSE;
mdm_debug ("mdm_display_manage: Managing %s", d->name);
if (pipe (fds) < 0) {
mdm_error ("mdm_display_manage: Cannot create pipe");
}
if ( ! mdm_display_check_loop (d))
return FALSE;
if (d->slavepid != 0)
mdm_debug ("mdm_display_manage: Old slave pid is %d", (int)d->slavepid);
/* If we have an old slave process hanging around, kill it */
/* This shouldn't be a normal code path however, so it doesn't matter
* that we are hanging */
whack_old_slave (d, FALSE /* kill_connection */);
/* Ensure that /tmp/.ICE-unix and /tmp/.X11-unix exist and have the
* correct permissions */
mdm_ensure_sanity ();
d->managetime = time (NULL);
mdm_debug ("Forking slave process");
/* Fork slave process */
pid = d->slavepid = fork ();
switch (pid) {
case 0:
setpgid (0, 0);
/* Make the slave it's own leader. This 1) makes killing -pid of
* the daemon work more sanely because the daemon can whack the
* slave much better itself */
setsid ();
/* In the child setup empty mask and set all signals to
* default values, we'll make them more fun later */
mdm_unset_signals ();
d->slavepid = getpid ();
mdm_connection_close (pipeconn);
pipeconn = NULL;
mdm_connection_close (unixconn);
unixconn = NULL;
mdm_log_shutdown ();
/* Debian changes */
#if 0
/* upstream version */
- /* Close everything */
- mdm_close_all_descriptors (0 /* from */, fds[0] /* except */, slave_fifo_pipe_fd /* except2 */);
#endif
/* Close stdin/stdout/stderr. Leave others, as pam modules may have them open */
VE_IGNORE_EINTR (close (0));
VE_IGNORE_EINTR (close (1));
VE_IGNORE_EINTR (close (2));
/* End of Debian changes */
/* No error checking here - if it's messed the best response
* is to ignore & try to continue */
mdm_open_dev_null (O_RDONLY); /* open stdin - fd 0 */
mdm_open_dev_null (O_RDWR); /* open stdout - fd 1 */
mdm_open_dev_null (O_RDWR); /* open stderr - fd 2 */
mdm_log_init ();
d->slave_notify_fd = fds[0];
fcntl (d->slave_notify_fd, F_SETFL, fcntl (d->slave_notify_fd, F_GETFL) | O_NONBLOCK);
mdm_slave_start (d);
/* should never retern */
/* yaikes, how did we ever get here? */
mdm_server_stop (d);
_exit (DISPLAY_REMANAGE);
break;
case -1:
d->slavepid = 0;
mdm_error ("mdm_display_manage: Failed forking MDM slave process for %s", d->name);
return FALSE;
default:
mdm_debug ("mdm_display_manage: Forked slave: %d", (int)pid);
d->master_notify_fd = fds[1];
VE_IGNORE_EINTR (close (fds[0]));
break;
}
/* invalidate chosen hostname */
g_free (d->chosen_hostname);
d->chosen_hostname = NULL;
/* use_chooser can only be temporary, if you want it permanent you set it
up in the server definition with "chooser=true" and it will get set up
during server command line resolution */
d->use_chooser = FALSE;
if (SERVER_IS_LOCAL (d)) {
d->dispstat = DISPLAY_ALIVE;
}
/* reset sleep to 1, to sleep just in case (avoids X server races) */
d->sleep_before_run = 1;
return TRUE;
}
