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/*
* dm - nodm X display manager
*
* Copyright 2011 Enrico Zini <enrico@enricozini.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef NODM_DISPLAY_MANAGER_H
#define NODM_DISPLAY_MANAGER_H
#include "xserver.h"
#include "xsession.h"
#include "vt.h"
#include <time.h>
#include <signal.h>
struct nodm_display_manager
{
/// X server supervision
struct nodm_xserver srv;
/// X session supervision
struct nodm_xsession session;
/// VT allocation
struct nodm_vt vt;
/**
* The minimum time (in seconds) that a session should last to be
* considered successful
*/
int conf_minimum_session_time;
/// Time the last session started
time_t last_session_start;
/// Original signal mask at program startup
sigset_t orig_signal_mask;
/// Storage for split server arguments used by nodm_x_cmdline_split
char** _srv_split_argv;
void* _srv_split_args;
/// Storage for vtN argument from dynamic VT allocation
char _vtarg[10];
};
/// Initialise a display_manager structure with default values
void nodm_display_manager_init(struct nodm_display_manager* dm);
/// Cleanup at the end of the display manager
void nodm_display_manager_cleanup(struct nodm_display_manager* dm);
/**
* Start X and the X session
*
* This function sets the signal mask to block all signals. The original signal
* mask is restored by nodm_display_manager_cleanup().
*/
int nodm_display_manager_start(struct nodm_display_manager* dm);
/// Restart X and the X session after they died
int nodm_display_manager_restart(struct nodm_display_manager* dm);
/// Wait for X or the X session to end
int nodm_display_manager_wait(struct nodm_display_manager* dm, int* session_status);
/// Stop X and the X session
int nodm_display_manager_stop(struct nodm_display_manager* dm);
/**
* nodm wait/restart loop.
*
* Wait for the X server or session to terminate and restart them.
*
* If the session was very short-lived, it wants for an incremental amount of
* time before restarting it.
*/
int nodm_display_manager_wait_restart_loop(struct nodm_display_manager* dm);
/**
* Split xcmdline using wordexp shell-like expansion and set dm->srv.argv.
*
* If the first token starts with '/' or '.', it is used as the X server, else
* "X" is used as the server.
*
* If the second token (or the first if the first was not recognised as a path
* to the X server) looks like ":<NUMBER>", it is used as the display name,
* else ":0" is used.
*/
int nodm_display_manager_parse_xcmdline(struct nodm_display_manager* dm, const char* xcmdline);
/// Dump all internal status to stderr
void nodm_display_manager_dump_status(struct nodm_display_manager* dm);
#endif
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