/* sys_linux_init:
* Top level system driver wakeup call.
*/
static int sys_linux_init (void)
{
/* Get OS type */
_unix_read_os_type();
if (os_type != OSTYPE_LINUX) return -1; /* FWIW */
/* This is the only bit that needs root privileges. First
* we attempt to set our euid to 0, in case this is the
* second time we've been called. */
__al_linux_have_ioperms = !seteuid (0);
#ifdef ALLEGRO_LINUX_VGA
__al_linux_have_ioperms &= !iopl (3);
#endif
__al_linux_have_ioperms &= !__al_linux_init_memory();
/* At this stage we can drop the root privileges. */
seteuid (getuid());
/* Initialise dynamic driver lists */
_unix_driver_lists_init();
if (_unix_gfx_driver_list)
_driver_list_append_list(&_unix_gfx_driver_list, _linux_gfx_driver_list);
/* Load dynamic modules */
_unix_load_modules(SYSTEM_LINUX);
/* Initialise VGA helpers */
#ifdef ALLEGRO_LINUX_VGA
if (__al_linux_have_ioperms)
if (__al_linux_init_vga_helpers()) return -1;
#endif
/* Install emergency-exit signal handlers */
old_sig_abrt = signal(SIGABRT, signal_handler);
old_sig_fpe = signal(SIGFPE, signal_handler);
old_sig_ill = signal(SIGILL, signal_handler);
old_sig_segv = signal(SIGSEGV, signal_handler);
old_sig_term = signal(SIGTERM, signal_handler);
old_sig_int = signal(SIGINT, signal_handler);
#ifdef SIGQUIT
old_sig_quit = signal(SIGQUIT, signal_handler);
#endif
/* Initialise async event processing */
if (__al_linux_bgman_init()) {
/* shutdown everything. */
sys_linux_exit();
return -1;
}
/* Mark the beginning of time */
_al_unix_init_time();
return 0;
}
/* al_init will call this. */
ALLEGRO_SYSTEM *iphone_initialize(int flags)
{
(void)flags;
iphone = al_calloc(1, sizeof *iphone);
ALLEGRO_SYSTEM *sys = &iphone->system;
iphone->mutex = al_create_mutex();
iphone->cond = al_create_cond();
sys->vt = _al_get_iphone_system_interface();
_al_vector_init(&sys->displays, sizeof (ALLEGRO_DISPLAY_IPHONE *));
_al_unix_init_time();
_al_iphone_init_path();
return sys;
}
static ALLEGRO_SYSTEM *xglx_initialize(int flags)
{
Display *x11display;
Display *gfxdisplay;
ALLEGRO_SYSTEM_XGLX *s;
(void)flags;
#ifdef DEBUG_X11
_Xdebug = 1;
#endif
XInitThreads();
/* Get an X11 display handle. */
x11display = XOpenDisplay(0);
if (x11display) {
/* Never ask. */
gfxdisplay = XOpenDisplay(0);
if (!gfxdisplay) {
ALLEGRO_ERROR("XOpenDisplay failed second time.\n");
XCloseDisplay(x11display);
return NULL;
}
}
else {
ALLEGRO_INFO("XOpenDisplay failed; assuming headless mode.\n");
gfxdisplay = NULL;
}
_al_unix_init_time();
s = al_calloc(1, sizeof *s);
_al_mutex_init_recursive(&s->lock);
_al_cond_init(&s->resized);
s->inhibit_screensaver = false;
_al_vector_init(&s->system.displays, sizeof (ALLEGRO_DISPLAY_XGLX *));
s->system.vt = xglx_vt;
s->gfxdisplay = gfxdisplay;
s->x11display = x11display;
if (s->x11display) {
ALLEGRO_INFO("XGLX driver connected to X11 (%s %d).\n",
ServerVendor(s->x11display), VendorRelease(s->x11display));
ALLEGRO_INFO("X11 protocol version %d.%d.\n",
ProtocolVersion(s->x11display), ProtocolRevision(s->x11display));
/* We need to put *some* atom into the ClientMessage we send for
* faking mouse movements with al_set_mouse_xy - so let's ask X11
* for one here.
*/
s->AllegroAtom = XInternAtom(x11display, "AllegroAtom", False);
/* Message type for XEmbed protocol. */
s->XEmbedAtom = XInternAtom(x11display, "_XEMBED", False);
_al_thread_create(&s->xevents_thread, _al_xwin_background_thread, s);
s->have_xevents_thread = true;
ALLEGRO_INFO("events thread spawned.\n");
}
return &s->system;
}
/* Create a new system object for the dummy X11 driver. */
static ALLEGRO_SYSTEM *xglx_initialize(int flags)
{
Display *x11display;
Display *gfxdisplay;
ALLEGRO_SYSTEM_XGLX *s;
(void)flags;
#ifdef DEBUG_X11
_Xdebug = 1;
#endif
XInitThreads();
/* Get an X11 display handle. */
x11display = XOpenDisplay(0);
if (!x11display) {
ALLEGRO_ERROR("XOpenDisplay failed.\n");
return NULL;
}
/* Never ask. */
gfxdisplay = XOpenDisplay(0);
if (!gfxdisplay) {
ALLEGRO_ERROR("XOpenDisplay failed.\n");
XCloseDisplay(x11display);
return NULL;
}
_al_unix_init_time();
s = _AL_MALLOC(sizeof *s);
memset(s, 0, sizeof *s);
/* We need to put *some* atom into the ClientMessage we send for
* faking mouse movements with al_set_mouse_xy - so lets ask X11
* for one here.
*/
s->AllegroAtom = XInternAtom(x11display, "AllegroAtom", False);
_al_mutex_init_recursive(&s->lock);
_al_cond_init(&s->resized);
s->inhibit_screensaver = false;
_al_vector_init(&s->system.displays, sizeof (ALLEGRO_DISPLAY_XGLX *));
s->gfxdisplay = gfxdisplay;
s->x11display = x11display;
s->system.vt = xglx_vt;
ALLEGRO_INFO("XGLX driver connected to X11 (%s %d).\n",
ServerVendor(s->x11display), VendorRelease(s->x11display));
ALLEGRO_INFO("X11 protocol version %d.%d.\n",
ProtocolVersion(s->x11display), ProtocolRevision(s->x11display));
#ifdef ALLEGRO_XWINDOWS_WITH_XINERAMA
_al_xsys_xinerama_init(s);
#endif
_al_xglx_store_video_mode(s);
_al_thread_create(&s->thread, xglx_background_thread, s);
ALLEGRO_INFO("events thread spawned.\n");
return &s->system;
}
