861 lines
32 KiB
C
861 lines
32 KiB
C
#undef I3__FILE__
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#define I3__FILE__ "main.c"
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/*
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* vim:ts=4:sw=4:expandtab
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*
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* i3 - an improved dynamic tiling window manager
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* © 2009-2013 Michael Stapelberg and contributors (see also: LICENSE)
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*
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* main.c: Initialization, main loop
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*
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*/
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#include <ev.h>
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#include <fcntl.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/un.h>
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#include <sys/time.h>
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#include <sys/resource.h>
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#include <sys/mman.h>
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#include <sys/stat.h>
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#include "all.h"
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#include "shmlog.h"
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#include "sd-daemon.h"
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/* The original value of RLIMIT_CORE when i3 was started. We need to restore
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* this before starting any other process, since we set RLIMIT_CORE to
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* RLIM_INFINITY for i3 debugging versions. */
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struct rlimit original_rlimit_core;
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/** The number of file descriptors passed via socket activation. */
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int listen_fds;
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static int xkb_event_base;
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int xkb_current_group;
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extern Con *focused;
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char **start_argv;
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xcb_connection_t *conn;
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/* The screen (0 when you are using DISPLAY=:0) of the connection 'conn' */
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int conn_screen;
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/* Display handle for libstartup-notification */
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SnDisplay *sndisplay;
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/* The last timestamp we got from X11 (timestamps are included in some events
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* and are used for some things, like determining a unique ID in startup
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* notification). */
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xcb_timestamp_t last_timestamp = XCB_CURRENT_TIME;
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xcb_screen_t *root_screen;
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xcb_window_t root;
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/* Color depth, visual id and colormap to use when creating windows and
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* pixmaps. Will use 32 bit depth and an appropriate visual, if available,
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* otherwise the root window’s default (usually 24 bit TrueColor). */
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uint8_t root_depth;
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xcb_visualid_t visual_id;
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xcb_colormap_t colormap;
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struct ev_loop *main_loop;
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xcb_key_symbols_t *keysyms;
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/* Those are our connections to X11 for use with libXcursor and XKB */
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Display *xlibdpy, *xkbdpy;
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/* Default shmlog size if not set by user. */
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const int default_shmlog_size = 25 * 1024 * 1024;
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/* The list of key bindings */
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struct bindings_head *bindings;
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/* The list of exec-lines */
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struct autostarts_head autostarts = TAILQ_HEAD_INITIALIZER(autostarts);
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/* The list of exec_always lines */
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struct autostarts_always_head autostarts_always = TAILQ_HEAD_INITIALIZER(autostarts_always);
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/* The list of assignments */
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struct assignments_head assignments = TAILQ_HEAD_INITIALIZER(assignments);
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/* The list of workspace assignments (which workspace should end up on which
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* output) */
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struct ws_assignments_head ws_assignments = TAILQ_HEAD_INITIALIZER(ws_assignments);
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/* We hope that those are supported and set them to true */
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bool xcursor_supported = true;
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bool xkb_supported = true;
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/* This will be set to true when -C is used so that functions can behave
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* slightly differently. We don’t want i3-nagbar to be started when validating
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* the config, for example. */
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bool only_check_config = false;
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/*
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* This callback is only a dummy, see xcb_prepare_cb and xcb_check_cb.
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* See also man libev(3): "ev_prepare" and "ev_check" - customise your event loop
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*
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*/
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static void xcb_got_event(EV_P_ struct ev_io *w, int revents) {
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/* empty, because xcb_prepare_cb and xcb_check_cb are used */
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}
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/*
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* Flush before blocking (and waiting for new events)
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*
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*/
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static void xcb_prepare_cb(EV_P_ ev_prepare *w, int revents) {
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xcb_flush(conn);
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}
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/*
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* Instead of polling the X connection socket we leave this to
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* xcb_poll_for_event() which knows better than we can ever know.
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*
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*/
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static void xcb_check_cb(EV_P_ ev_check *w, int revents) {
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xcb_generic_event_t *event;
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while ((event = xcb_poll_for_event(conn)) != NULL) {
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if (event->response_type == 0) {
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if (event_is_ignored(event->sequence, 0))
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DLOG("Expected X11 Error received for sequence %x\n", event->sequence);
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else {
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xcb_generic_error_t *error = (xcb_generic_error_t*)event;
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DLOG("X11 Error received (probably harmless)! sequence 0x%x, error_code = %d\n",
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error->sequence, error->error_code);
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}
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free(event);
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continue;
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}
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/* Strip off the highest bit (set if the event is generated) */
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int type = (event->response_type & 0x7F);
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handle_event(type, event);
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free(event);
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}
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}
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/*
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* When using xmodmap to change the keyboard mapping, this event
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* is only sent via XKB. Therefore, we need this special handler.
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*
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*/
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static void xkb_got_event(EV_P_ struct ev_io *w, int revents) {
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DLOG("Handling XKB event\n");
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XkbEvent ev;
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/* When using xmodmap, every change (!) gets an own event.
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* Therefore, we just read all events and only handle the
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* mapping_notify once. */
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bool mapping_changed = false;
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while (XPending(xkbdpy)) {
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XNextEvent(xkbdpy, (XEvent*)&ev);
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/* While we should never receive a non-XKB event,
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* better do sanity checking */
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if (ev.type != xkb_event_base)
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continue;
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if (ev.any.xkb_type == XkbMapNotify) {
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mapping_changed = true;
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continue;
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}
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if (ev.any.xkb_type != XkbStateNotify) {
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ELOG("Unknown XKB event received (type %d)\n", ev.any.xkb_type);
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continue;
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}
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/* See The XKB Extension: Library Specification, section 14.1 */
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/* We check if the current group (each group contains
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* two levels) has been changed. Mode_switch activates
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* group XkbGroup2Index */
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if (xkb_current_group == ev.state.group)
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continue;
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xkb_current_group = ev.state.group;
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if (ev.state.group == XkbGroup2Index) {
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DLOG("Mode_switch enabled\n");
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grab_all_keys(conn, true);
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}
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if (ev.state.group == XkbGroup1Index) {
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DLOG("Mode_switch disabled\n");
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ungrab_all_keys(conn);
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grab_all_keys(conn, false);
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}
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}
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if (!mapping_changed)
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return;
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DLOG("Keyboard mapping changed, updating keybindings\n");
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xcb_key_symbols_free(keysyms);
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keysyms = xcb_key_symbols_alloc(conn);
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xcb_numlock_mask = aio_get_mod_mask_for(XCB_NUM_LOCK, keysyms);
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ungrab_all_keys(conn);
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DLOG("Re-grabbing...\n");
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translate_keysyms();
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grab_all_keys(conn, (xkb_current_group == XkbGroup2Index));
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DLOG("Done\n");
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}
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/*
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* Exit handler which destroys the main_loop. Will trigger cleanup handlers.
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*
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*/
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static void i3_exit(void) {
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/* We need ev >= 4 for the following code. Since it is not *that* important (it
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* only makes sure that there are no i3-nagbar instances left behind) we still
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* support old systems with libev 3. */
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#if EV_VERSION_MAJOR >= 4
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ev_loop_destroy(main_loop);
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#endif
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if (*shmlogname != '\0') {
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fprintf(stderr, "Closing SHM log \"%s\"\n", shmlogname);
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fflush(stderr);
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shm_unlink(shmlogname);
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}
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}
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/*
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* (One-shot) Handler for all signals with default action "Term", see signal(7)
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*
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* Unlinks the SHM log and re-raises the signal.
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*
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*/
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static void handle_signal(int sig, siginfo_t *info, void *data) {
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if (*shmlogname != '\0') {
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shm_unlink(shmlogname);
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}
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raise(sig);
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}
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int main(int argc, char *argv[]) {
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/* Keep a symbol pointing to the I3_VERSION string constant so that we have
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* it in gdb backtraces. */
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const char *i3_version __attribute__ ((unused)) = I3_VERSION;
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char *override_configpath = NULL;
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bool autostart = true;
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char *layout_path = NULL;
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bool delete_layout_path = false;
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bool force_xinerama = false;
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char *fake_outputs = NULL;
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bool disable_signalhandler = false;
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static struct option long_options[] = {
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{"no-autostart", no_argument, 0, 'a'},
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{"config", required_argument, 0, 'c'},
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{"version", no_argument, 0, 'v'},
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{"moreversion", no_argument, 0, 'm'},
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{"more-version", no_argument, 0, 'm'},
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{"more_version", no_argument, 0, 'm'},
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{"help", no_argument, 0, 'h'},
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{"layout", required_argument, 0, 'L'},
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{"restart", required_argument, 0, 0},
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{"force-xinerama", no_argument, 0, 0},
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{"force_xinerama", no_argument, 0, 0},
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{"disable-signalhandler", no_argument, 0, 0},
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{"shmlog-size", required_argument, 0, 0},
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{"shmlog_size", required_argument, 0, 0},
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{"get-socketpath", no_argument, 0, 0},
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{"get_socketpath", no_argument, 0, 0},
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{"fake_outputs", required_argument, 0, 0},
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{"fake-outputs", required_argument, 0, 0},
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{"force-old-config-parser-v4.4-only", no_argument, 0, 0},
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{0, 0, 0, 0}
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};
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int option_index = 0, opt;
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setlocale(LC_ALL, "");
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/* Get the RLIMIT_CORE limit at startup time to restore this before
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* starting processes. */
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getrlimit(RLIMIT_CORE, &original_rlimit_core);
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/* Disable output buffering to make redirects in .xsession actually useful for debugging */
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if (!isatty(fileno(stdout)))
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setbuf(stdout, NULL);
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srand(time(NULL));
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/* Init logging *before* initializing debug_build to guarantee early
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* (file) logging. */
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init_logging();
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/* On release builds, disable SHM logging by default. */
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shmlog_size = (is_debug_build() ? default_shmlog_size : 0);
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start_argv = argv;
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while ((opt = getopt_long(argc, argv, "c:CvmaL:hld:V", long_options, &option_index)) != -1) {
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switch (opt) {
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case 'a':
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LOG("Autostart disabled using -a\n");
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autostart = false;
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break;
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case 'L':
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FREE(layout_path);
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layout_path = sstrdup(optarg);
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delete_layout_path = false;
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break;
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case 'c':
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FREE(override_configpath);
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override_configpath = sstrdup(optarg);
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break;
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case 'C':
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LOG("Checking configuration file only (-C)\n");
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only_check_config = true;
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break;
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case 'v':
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printf("i3 version " I3_VERSION " © 2009-2013 Michael Stapelberg and contributors\n");
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exit(EXIT_SUCCESS);
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break;
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case 'm':
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printf("Binary i3 version: " I3_VERSION " © 2009-2013 Michael Stapelberg and contributors\n");
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display_running_version();
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exit(EXIT_SUCCESS);
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break;
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case 'V':
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set_verbosity(true);
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break;
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case 'd':
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LOG("Enabling debug logging\n");
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set_debug_logging(true);
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break;
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case 'l':
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/* DEPRECATED, ignored for the next 3 versions (3.e, 3.f, 3.g) */
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break;
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case 0:
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if (strcmp(long_options[option_index].name, "force-xinerama") == 0 ||
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strcmp(long_options[option_index].name, "force_xinerama") == 0) {
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force_xinerama = true;
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ELOG("Using Xinerama instead of RandR. This option should be "
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"avoided at all cost because it does not refresh the list "
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"of screens, so you cannot configure displays at runtime. "
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"Please check if your driver really does not support RandR "
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"and disable this option as soon as you can.\n");
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break;
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} else if (strcmp(long_options[option_index].name, "disable-signalhandler") == 0) {
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disable_signalhandler = true;
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break;
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} else if (strcmp(long_options[option_index].name, "get-socketpath") == 0 ||
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strcmp(long_options[option_index].name, "get_socketpath") == 0) {
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char *socket_path = root_atom_contents("I3_SOCKET_PATH");
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if (socket_path) {
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printf("%s\n", socket_path);
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exit(EXIT_SUCCESS);
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}
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exit(EXIT_FAILURE);
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} else if (strcmp(long_options[option_index].name, "shmlog-size") == 0 ||
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strcmp(long_options[option_index].name, "shmlog_size") == 0) {
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shmlog_size = atoi(optarg);
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/* Re-initialize logging immediately to get as many
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* logmessages as possible into the SHM log. */
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init_logging();
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LOG("Limiting SHM log size to %d bytes\n", shmlog_size);
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break;
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} else if (strcmp(long_options[option_index].name, "restart") == 0) {
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FREE(layout_path);
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layout_path = sstrdup(optarg);
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delete_layout_path = true;
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break;
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} else if (strcmp(long_options[option_index].name, "fake-outputs") == 0 ||
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strcmp(long_options[option_index].name, "fake_outputs") == 0) {
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LOG("Initializing fake outputs: %s\n", optarg);
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fake_outputs = sstrdup(optarg);
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break;
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} else if (strcmp(long_options[option_index].name, "force-old-config-parser-v4.4-only") == 0) {
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ELOG("You are passing --force-old-config-parser-v4.4-only, but that flag was removed by now.\n");
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break;
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}
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/* fall-through */
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default:
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fprintf(stderr, "Usage: %s [-c configfile] [-d all] [-a] [-v] [-V] [-C]\n", argv[0]);
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fprintf(stderr, "\n");
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fprintf(stderr, "\t-a disable autostart ('exec' lines in config)\n");
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fprintf(stderr, "\t-c <file> use the provided configfile instead\n");
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fprintf(stderr, "\t-C validate configuration file and exit\n");
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fprintf(stderr, "\t-d all enable debug output\n");
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fprintf(stderr, "\t-L <file> path to the serialized layout during restarts\n");
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fprintf(stderr, "\t-v display version and exit\n");
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fprintf(stderr, "\t-V enable verbose mode\n");
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fprintf(stderr, "\n");
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fprintf(stderr, "\t--force-xinerama\n"
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"\tUse Xinerama instead of RandR.\n"
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"\tThis option should only be used if you are stuck with the\n"
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"\told nVidia closed source driver (older than 302.17), which does\n"
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"\tnot support RandR.\n");
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fprintf(stderr, "\n");
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fprintf(stderr, "\t--get-socketpath\n"
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"\tRetrieve the i3 IPC socket path from X11, print it, then exit.\n");
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fprintf(stderr, "\n");
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fprintf(stderr, "\t--shmlog-size <limit>\n"
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"\tLimits the size of the i3 SHM log to <limit> bytes. Setting this\n"
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"\tto 0 disables SHM logging entirely.\n"
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"\tThe default is %d bytes.\n", shmlog_size);
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fprintf(stderr, "\n");
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fprintf(stderr, "If you pass plain text arguments, i3 will interpret them as a command\n"
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"to send to a currently running i3 (like i3-msg). This allows you to\n"
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"use nice and logical commands, such as:\n"
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"\n"
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"\ti3 border none\n"
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"\ti3 floating toggle\n"
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"\ti3 kill window\n"
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"\n");
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exit(EXIT_FAILURE);
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}
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}
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/* If the user passes more arguments, we act like i3-msg would: Just send
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* the arguments as an IPC message to i3. This allows for nice semantic
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* commands such as 'i3 border none'. */
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if (!only_check_config && optind < argc) {
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/* We enable verbose mode so that the user knows what’s going on.
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* This should make it easier to find mistakes when the user passes
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* arguments by mistake. */
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set_verbosity(true);
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LOG("Additional arguments passed. Sending them as a command to i3.\n");
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char *payload = NULL;
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while (optind < argc) {
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if (!payload) {
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payload = sstrdup(argv[optind]);
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} else {
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char *both;
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sasprintf(&both, "%s %s", payload, argv[optind]);
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free(payload);
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payload = both;
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}
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optind++;
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}
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DLOG("Command is: %s (%zd bytes)\n", payload, strlen(payload));
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char *socket_path = root_atom_contents("I3_SOCKET_PATH");
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if (!socket_path) {
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ELOG("Could not get i3 IPC socket path\n");
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return 1;
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}
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int sockfd = socket(AF_LOCAL, SOCK_STREAM, 0);
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if (sockfd == -1)
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err(EXIT_FAILURE, "Could not create socket");
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struct sockaddr_un addr;
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memset(&addr, 0, sizeof(struct sockaddr_un));
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addr.sun_family = AF_LOCAL;
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strncpy(addr.sun_path, socket_path, sizeof(addr.sun_path) - 1);
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if (connect(sockfd, (const struct sockaddr*)&addr, sizeof(struct sockaddr_un)) < 0)
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err(EXIT_FAILURE, "Could not connect to i3");
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if (ipc_send_message(sockfd, strlen(payload), I3_IPC_MESSAGE_TYPE_COMMAND,
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(uint8_t*)payload) == -1)
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err(EXIT_FAILURE, "IPC: write()");
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uint32_t reply_length;
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uint32_t reply_type;
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uint8_t *reply;
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int ret;
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if ((ret = ipc_recv_message(sockfd, &reply_type, &reply_length, &reply)) != 0) {
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if (ret == -1)
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err(EXIT_FAILURE, "IPC: read()");
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return 1;
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}
|
||
if (reply_type != I3_IPC_MESSAGE_TYPE_COMMAND)
|
||
errx(EXIT_FAILURE, "IPC: received reply of type %d but expected %d (COMMAND)", reply_type, I3_IPC_MESSAGE_TYPE_COMMAND);
|
||
printf("%.*s\n", reply_length, reply);
|
||
return 0;
|
||
}
|
||
|
||
/* Enable logging to handle the case when the user did not specify --shmlog-size */
|
||
init_logging();
|
||
|
||
/* Try to enable core dumps by default when running a debug build */
|
||
if (is_debug_build()) {
|
||
struct rlimit limit = { RLIM_INFINITY, RLIM_INFINITY };
|
||
setrlimit(RLIMIT_CORE, &limit);
|
||
|
||
/* The following code is helpful, but not required. We thus don’t pay
|
||
* much attention to error handling, non-linux or other edge cases. */
|
||
char cwd[PATH_MAX];
|
||
LOG("CORE DUMPS: You are running a development version of i3, so coredumps were automatically enabled (ulimit -c unlimited).\n");
|
||
if (getcwd(cwd, sizeof(cwd)) != NULL)
|
||
LOG("CORE DUMPS: Your current working directory is \"%s\".\n", cwd);
|
||
int patternfd;
|
||
if ((patternfd = open("/proc/sys/kernel/core_pattern", O_RDONLY)) >= 0) {
|
||
memset(cwd, '\0', sizeof(cwd));
|
||
if (read(patternfd, cwd, sizeof(cwd)) > 0)
|
||
/* a trailing newline is included in cwd */
|
||
LOG("CORE DUMPS: Your core_pattern is: %s", cwd);
|
||
close(patternfd);
|
||
}
|
||
}
|
||
|
||
LOG("i3 " I3_VERSION " starting\n");
|
||
|
||
conn = xcb_connect(NULL, &conn_screen);
|
||
if (xcb_connection_has_error(conn))
|
||
errx(EXIT_FAILURE, "Cannot open display\n");
|
||
|
||
sndisplay = sn_xcb_display_new(conn, NULL, NULL);
|
||
|
||
/* Initialize the libev event loop. This needs to be done before loading
|
||
* the config file because the parser will install an ev_child watcher
|
||
* for the nagbar when config errors are found. */
|
||
main_loop = EV_DEFAULT;
|
||
if (main_loop == NULL)
|
||
die("Could not initialize libev. Bad LIBEV_FLAGS?\n");
|
||
|
||
root_screen = xcb_aux_get_screen(conn, conn_screen);
|
||
root = root_screen->root;
|
||
|
||
/* By default, we use the same depth and visual as the root window, which
|
||
* usually is TrueColor (24 bit depth) and the corresponding visual.
|
||
* However, we also check if a 32 bit depth and visual are available (for
|
||
* transparency) and use it if so. */
|
||
root_depth = root_screen->root_depth;
|
||
visual_id = root_screen->root_visual;
|
||
colormap = root_screen->default_colormap;
|
||
|
||
DLOG("root_depth = %d, visual_id = 0x%08x.\n", root_depth, visual_id);
|
||
|
||
xcb_get_geometry_cookie_t gcookie = xcb_get_geometry(conn, root);
|
||
xcb_query_pointer_cookie_t pointercookie = xcb_query_pointer(conn, root);
|
||
|
||
load_configuration(conn, override_configpath, false);
|
||
if (only_check_config) {
|
||
LOG("Done checking configuration file. Exiting.\n");
|
||
exit(0);
|
||
}
|
||
|
||
if (config.ipc_socket_path == NULL) {
|
||
/* Fall back to a file name in /tmp/ based on the PID */
|
||
if ((config.ipc_socket_path = getenv("I3SOCK")) == NULL)
|
||
config.ipc_socket_path = get_process_filename("ipc-socket");
|
||
else
|
||
config.ipc_socket_path = sstrdup(config.ipc_socket_path);
|
||
}
|
||
|
||
xcb_void_cookie_t cookie;
|
||
cookie = xcb_change_window_attributes_checked(conn, root, XCB_CW_EVENT_MASK, (uint32_t[]){ ROOT_EVENT_MASK });
|
||
check_error(conn, cookie, "Another window manager seems to be running");
|
||
|
||
xcb_get_geometry_reply_t *greply = xcb_get_geometry_reply(conn, gcookie, NULL);
|
||
if (greply == NULL) {
|
||
ELOG("Could not get geometry of the root window, exiting\n");
|
||
return 1;
|
||
}
|
||
DLOG("root geometry reply: (%d, %d) %d x %d\n", greply->x, greply->y, greply->width, greply->height);
|
||
|
||
/* Place requests for the atoms we need as soon as possible */
|
||
#define xmacro(atom) \
|
||
xcb_intern_atom_cookie_t atom ## _cookie = xcb_intern_atom(conn, 0, strlen(#atom), #atom);
|
||
#include "atoms.xmacro"
|
||
#undef xmacro
|
||
|
||
/* Initialize the Xlib connection */
|
||
xlibdpy = xkbdpy = XOpenDisplay(NULL);
|
||
|
||
/* Try to load the X cursors and initialize the XKB extension */
|
||
if (xlibdpy == NULL) {
|
||
ELOG("ERROR: XOpenDisplay() failed, disabling libXcursor/XKB support\n");
|
||
xcursor_supported = false;
|
||
xkb_supported = false;
|
||
} else if (fcntl(ConnectionNumber(xlibdpy), F_SETFD, FD_CLOEXEC) == -1) {
|
||
ELOG("Could not set FD_CLOEXEC on xkbdpy\n");
|
||
return 1;
|
||
} else {
|
||
xcursor_load_cursors();
|
||
/*init_xkb();*/
|
||
}
|
||
|
||
/* Set a cursor for the root window (otherwise the root window will show no
|
||
cursor until the first client is launched). */
|
||
if (xcursor_supported)
|
||
xcursor_set_root_cursor(XCURSOR_CURSOR_POINTER);
|
||
else xcb_set_root_cursor(XCURSOR_CURSOR_POINTER);
|
||
|
||
if (xkb_supported) {
|
||
int errBase,
|
||
major = XkbMajorVersion,
|
||
minor = XkbMinorVersion;
|
||
|
||
if (fcntl(ConnectionNumber(xkbdpy), F_SETFD, FD_CLOEXEC) == -1) {
|
||
fprintf(stderr, "Could not set FD_CLOEXEC on xkbdpy\n");
|
||
return 1;
|
||
}
|
||
|
||
int i1;
|
||
if (!XkbQueryExtension(xkbdpy,&i1,&xkb_event_base,&errBase,&major,&minor)) {
|
||
fprintf(stderr, "XKB not supported by X-server\n");
|
||
xkb_supported = false;
|
||
}
|
||
/* end of ugliness */
|
||
|
||
if (xkb_supported && !XkbSelectEvents(xkbdpy, XkbUseCoreKbd,
|
||
XkbMapNotifyMask | XkbStateNotifyMask,
|
||
XkbMapNotifyMask | XkbStateNotifyMask)) {
|
||
fprintf(stderr, "Could not set XKB event mask\n");
|
||
return 1;
|
||
}
|
||
}
|
||
|
||
/* Setup NetWM atoms */
|
||
#define xmacro(name) \
|
||
do { \
|
||
xcb_intern_atom_reply_t *reply = xcb_intern_atom_reply(conn, name ## _cookie, NULL); \
|
||
if (!reply) { \
|
||
ELOG("Could not get atom " #name "\n"); \
|
||
exit(-1); \
|
||
} \
|
||
A_ ## name = reply->atom; \
|
||
free(reply); \
|
||
} while (0);
|
||
#include "atoms.xmacro"
|
||
#undef xmacro
|
||
|
||
property_handlers_init();
|
||
|
||
ewmh_setup_hints();
|
||
|
||
keysyms = xcb_key_symbols_alloc(conn);
|
||
|
||
xcb_numlock_mask = aio_get_mod_mask_for(XCB_NUM_LOCK, keysyms);
|
||
|
||
translate_keysyms();
|
||
grab_all_keys(conn, false);
|
||
|
||
bool needs_tree_init = true;
|
||
if (layout_path) {
|
||
LOG("Trying to restore the layout from %s...", layout_path);
|
||
needs_tree_init = !tree_restore(layout_path, greply);
|
||
if (delete_layout_path)
|
||
unlink(layout_path);
|
||
free(layout_path);
|
||
}
|
||
if (needs_tree_init)
|
||
tree_init(greply);
|
||
|
||
free(greply);
|
||
|
||
/* Setup fake outputs for testing */
|
||
if (fake_outputs == NULL && config.fake_outputs != NULL)
|
||
fake_outputs = config.fake_outputs;
|
||
|
||
if (fake_outputs != NULL) {
|
||
fake_outputs_init(fake_outputs);
|
||
FREE(fake_outputs);
|
||
config.fake_outputs = NULL;
|
||
} else if (force_xinerama || config.force_xinerama) {
|
||
/* Force Xinerama (for drivers which don't support RandR yet, esp. the
|
||
* nVidia binary graphics driver), when specified either in the config
|
||
* file or on command-line */
|
||
xinerama_init();
|
||
} else {
|
||
DLOG("Checking for XRandR...\n");
|
||
randr_init(&randr_base);
|
||
}
|
||
|
||
scratchpad_fix_resolution();
|
||
|
||
xcb_query_pointer_reply_t *pointerreply;
|
||
Output *output = NULL;
|
||
if (!(pointerreply = xcb_query_pointer_reply(conn, pointercookie, NULL))) {
|
||
ELOG("Could not query pointer position, using first screen\n");
|
||
} else {
|
||
DLOG("Pointer at %d, %d\n", pointerreply->root_x, pointerreply->root_y);
|
||
output = get_output_containing(pointerreply->root_x, pointerreply->root_y);
|
||
if (!output) {
|
||
ELOG("ERROR: No screen at (%d, %d), starting on the first screen\n",
|
||
pointerreply->root_x, pointerreply->root_y);
|
||
output = get_first_output();
|
||
}
|
||
|
||
con_focus(con_descend_focused(output_get_content(output->con)));
|
||
}
|
||
|
||
tree_render();
|
||
|
||
/* Create the UNIX domain socket for IPC */
|
||
int ipc_socket = ipc_create_socket(config.ipc_socket_path);
|
||
if (ipc_socket == -1) {
|
||
ELOG("Could not create the IPC socket, IPC disabled\n");
|
||
} else {
|
||
free(config.ipc_socket_path);
|
||
struct ev_io *ipc_io = scalloc(sizeof(struct ev_io));
|
||
ev_io_init(ipc_io, ipc_new_client, ipc_socket, EV_READ);
|
||
ev_io_start(main_loop, ipc_io);
|
||
}
|
||
|
||
/* Also handle the UNIX domain sockets passed via socket activation. The
|
||
* parameter 1 means "remove the environment variables", we don’t want to
|
||
* pass these to child processes. */
|
||
listen_fds = sd_listen_fds(0);
|
||
if (listen_fds < 0)
|
||
ELOG("socket activation: Error in sd_listen_fds\n");
|
||
else if (listen_fds == 0)
|
||
DLOG("socket activation: no sockets passed\n");
|
||
else {
|
||
int flags;
|
||
for (int fd = SD_LISTEN_FDS_START;
|
||
fd < (SD_LISTEN_FDS_START + listen_fds);
|
||
fd++) {
|
||
DLOG("socket activation: also listening on fd %d\n", fd);
|
||
|
||
/* sd_listen_fds() enables FD_CLOEXEC by default.
|
||
* However, we need to keep the file descriptors open for in-place
|
||
* restarting, therefore we explicitly disable FD_CLOEXEC. */
|
||
if ((flags = fcntl(fd, F_GETFD)) < 0 ||
|
||
fcntl(fd, F_SETFD, flags & ~FD_CLOEXEC) < 0) {
|
||
ELOG("Could not disable FD_CLOEXEC on fd %d\n", fd);
|
||
}
|
||
|
||
struct ev_io *ipc_io = scalloc(sizeof(struct ev_io));
|
||
ev_io_init(ipc_io, ipc_new_client, fd, EV_READ);
|
||
ev_io_start(main_loop, ipc_io);
|
||
}
|
||
}
|
||
|
||
/* Set up i3 specific atoms like I3_SOCKET_PATH and I3_CONFIG_PATH */
|
||
x_set_i3_atoms();
|
||
ewmh_update_workarea();
|
||
|
||
struct ev_io *xcb_watcher = scalloc(sizeof(struct ev_io));
|
||
struct ev_io *xkb = scalloc(sizeof(struct ev_io));
|
||
struct ev_check *xcb_check = scalloc(sizeof(struct ev_check));
|
||
struct ev_prepare *xcb_prepare = scalloc(sizeof(struct ev_prepare));
|
||
|
||
ev_io_init(xcb_watcher, xcb_got_event, xcb_get_file_descriptor(conn), EV_READ);
|
||
ev_io_start(main_loop, xcb_watcher);
|
||
|
||
|
||
if (xkb_supported) {
|
||
ev_io_init(xkb, xkb_got_event, ConnectionNumber(xkbdpy), EV_READ);
|
||
ev_io_start(main_loop, xkb);
|
||
|
||
/* Flush the buffer so that libev can properly get new events */
|
||
XFlush(xkbdpy);
|
||
}
|
||
|
||
ev_check_init(xcb_check, xcb_check_cb);
|
||
ev_check_start(main_loop, xcb_check);
|
||
|
||
ev_prepare_init(xcb_prepare, xcb_prepare_cb);
|
||
ev_prepare_start(main_loop, xcb_prepare);
|
||
|
||
xcb_flush(conn);
|
||
|
||
/* What follows is a fugly consequence of X11 protocol race conditions like
|
||
* the following: In an i3 in-place restart, i3 will reparent all windows
|
||
* to the root window, then exec() itself. In the new process, it calls
|
||
* manage_existing_windows. However, in case any application sent a
|
||
* generated UnmapNotify message to the WM (as GIMP does), this message
|
||
* will be handled by i3 *after* managing the window, thus i3 thinks the
|
||
* window just closed itself. In reality, the message was sent in the time
|
||
* period where i3 wasn’t running yet.
|
||
*
|
||
* To prevent this, we grab the server (disables processing of any other
|
||
* connections), then discard all pending events (since we didn’t do
|
||
* anything, there cannot be any meaningful responses), then ungrab the
|
||
* server. */
|
||
xcb_grab_server(conn);
|
||
{
|
||
xcb_aux_sync(conn);
|
||
xcb_generic_event_t *event;
|
||
while ((event = xcb_poll_for_event(conn)) != NULL) {
|
||
if (event->response_type == 0) {
|
||
free(event);
|
||
continue;
|
||
}
|
||
|
||
/* Strip off the highest bit (set if the event is generated) */
|
||
int type = (event->response_type & 0x7F);
|
||
|
||
/* We still need to handle MapRequests which are sent in the
|
||
* timespan starting from when we register as a window manager and
|
||
* this piece of code which drops events. */
|
||
if (type == XCB_MAP_REQUEST)
|
||
handle_event(type, event);
|
||
|
||
free(event);
|
||
}
|
||
manage_existing_windows(root);
|
||
}
|
||
xcb_ungrab_server(conn);
|
||
|
||
struct sigaction action;
|
||
|
||
action.sa_sigaction = handle_signal;
|
||
action.sa_flags = SA_NODEFER | SA_RESETHAND | SA_SIGINFO;
|
||
sigemptyset(&action.sa_mask);
|
||
|
||
if (!disable_signalhandler)
|
||
setup_signal_handler();
|
||
else {
|
||
/* Catch all signals with default action "Core", see signal(7) */
|
||
if (sigaction(SIGQUIT, &action, NULL) == -1 ||
|
||
sigaction(SIGILL, &action, NULL) == -1 ||
|
||
sigaction(SIGABRT, &action, NULL) == -1 ||
|
||
sigaction(SIGFPE, &action, NULL) == -1 ||
|
||
sigaction(SIGSEGV, &action, NULL) == -1)
|
||
ELOG("Could not setup signal handler");
|
||
}
|
||
|
||
/* Catch all signals with default action "Term", see signal(7) */
|
||
if (sigaction(SIGHUP, &action, NULL) == -1 ||
|
||
sigaction(SIGINT, &action, NULL) == -1 ||
|
||
sigaction(SIGALRM, &action, NULL) == -1 ||
|
||
sigaction(SIGUSR1, &action, NULL) == -1 ||
|
||
sigaction(SIGUSR2, &action, NULL) == -1)
|
||
ELOG("Could not setup signal handler");
|
||
|
||
/* Ignore SIGPIPE to survive errors when an IPC client disconnects
|
||
* while we are sending him a message */
|
||
signal(SIGPIPE, SIG_IGN);
|
||
|
||
/* Autostarting exec-lines */
|
||
if (autostart) {
|
||
struct Autostart *exec;
|
||
TAILQ_FOREACH(exec, &autostarts, autostarts) {
|
||
LOG("auto-starting %s\n", exec->command);
|
||
start_application(exec->command, exec->no_startup_id);
|
||
}
|
||
}
|
||
|
||
/* Autostarting exec_always-lines */
|
||
struct Autostart *exec_always;
|
||
TAILQ_FOREACH(exec_always, &autostarts_always, autostarts_always) {
|
||
LOG("auto-starting (always!) %s\n", exec_always->command);
|
||
start_application(exec_always->command, exec_always->no_startup_id);
|
||
}
|
||
|
||
/* Start i3bar processes for all configured bars */
|
||
Barconfig *barconfig;
|
||
TAILQ_FOREACH(barconfig, &barconfigs, configs) {
|
||
char *command = NULL;
|
||
sasprintf(&command, "%s --bar_id=%s --socket=\"%s\"",
|
||
barconfig->i3bar_command ? barconfig->i3bar_command : "i3bar",
|
||
barconfig->id, current_socketpath);
|
||
LOG("Starting bar process: %s\n", command);
|
||
start_application(command, true);
|
||
free(command);
|
||
}
|
||
|
||
/* Make sure to destroy the event loop to invoke the cleeanup callbacks
|
||
* when calling exit() */
|
||
atexit(i3_exit);
|
||
|
||
ev_loop(main_loop, 0);
|
||
}
|