1120 lines
43 KiB
C
1120 lines
43 KiB
C
/*
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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 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 "all.h"
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#include "shmlog.h"
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#include <ev.h>
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#include <fcntl.h>
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#include <getopt.h>
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#include <libgen.h>
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#include <locale.h>
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#include <signal.h>
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#include <sys/mman.h>
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#include <sys/resource.h>
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#include <sys/socket.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <sys/un.h>
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#include <unistd.h>
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#include <libguile.h>
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#include "guile.h"
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#ifdef I3_ASAN_ENABLED
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#include <sanitizer/lsan_interface.h>
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#endif
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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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/* We keep the xcb_prepare watcher around to be able to enable and disable it
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* temporarily for drag_pointer(). */
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static struct ev_prepare *xcb_prepare;
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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_visualtype_t *visual_type;
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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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/* 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 xkb_supported = true;
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bool shape_supported = true;
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bool force_xinerama = false;
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/* Define all atoms as global variables */
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#define xmacro(atom) xcb_atom_t A_##atom;
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#include "atoms.xmacro"
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#undef xmacro
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/*
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* This callback is only a dummy, see xcb_prepare_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 are used */
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}
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/*
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* Called just before the event loop sleeps. Ensures xcb’s incoming and outgoing
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* queues are empty so that any activity will trigger another event loop
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* iteration, and hence another xcb_prepare_cb invocation.
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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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/* Process all queued (and possibly new) events before the event loop
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sleeps. */
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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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/* Flush all queued events to X11. */
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xcb_flush(conn);
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}
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/*
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* Enable or disable the main X11 event handling function.
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* This is used by drag_pointer() which has its own, modal event handler, which
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* takes precedence over the normal event handler.
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*
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*/
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void main_set_x11_cb(bool enable) {
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DLOG("Setting main X11 callback to enabled=%d\n", enable);
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if (enable) {
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ev_prepare_start(main_loop, xcb_prepare);
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/* Trigger the watcher explicitly to handle all remaining X11 events.
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* drag_pointer()’s event handler exits in the middle of the loop. */
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ev_feed_event(main_loop, xcb_prepare, 0);
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} else {
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ev_prepare_stop(main_loop, xcb_prepare);
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}
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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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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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ipc_shutdown(SHUTDOWN_REASON_EXIT, -1);
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unlink(config.ipc_socket_path);
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xcb_disconnect(conn);
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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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#ifdef I3_ASAN_ENABLED
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__lsan_do_leak_check();
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#endif
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}
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/*
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* (One-shot) Handler for all signals with default action "Core", 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_core_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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/*
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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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* Exits the program gracefully.
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*
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*/
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static void handle_term_signal(struct ev_loop *loop, ev_signal *signal, int revents) {
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/* We exit gracefully here in the sense that cleanup handlers
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* installed via atexit are invoked. */
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exit(128 + signal->signum);
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}
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/*
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* Set up handlers for all signals with default action "Term", see signal(7)
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*
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*/
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static void setup_term_handlers(void) {
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static struct ev_signal signal_watchers[6];
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size_t num_watchers = sizeof(signal_watchers) / sizeof(signal_watchers[0]);
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/* We have to rely on libev functionality here and should not use
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* sigaction handlers because we need to invoke the exit handlers
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* and cannot do so from an asynchronous signal handling context as
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* not all code triggered during exit is signal safe (and exiting
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* the main loop from said handler is not easily possible). libev's
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* signal handlers does not impose such a constraint on us. */
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ev_signal_init(&signal_watchers[0], handle_term_signal, SIGHUP);
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ev_signal_init(&signal_watchers[1], handle_term_signal, SIGINT);
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ev_signal_init(&signal_watchers[2], handle_term_signal, SIGALRM);
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ev_signal_init(&signal_watchers[3], handle_term_signal, SIGTERM);
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ev_signal_init(&signal_watchers[4], handle_term_signal, SIGUSR1);
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ev_signal_init(&signal_watchers[5], handle_term_signal, SIGUSR1);
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for (size_t i = 0; i < num_watchers; i++) {
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ev_signal_start(main_loop, &signal_watchers[i]);
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/* The signal handlers should not block ev_run from returning
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* and so none of the signal handlers should hold a reference to
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* the main loop. */
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ev_unref(main_loop);
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}
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}
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static int parse_restart_fd(void) {
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const char *restart_fd = getenv("_I3_RESTART_FD");
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if (restart_fd == NULL) {
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return -1;
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}
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long int fd = -1;
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if (!parse_long(restart_fd, &fd, 10)) {
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ELOG("Malformed _I3_RESTART_FD \"%s\"\n", restart_fd);
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return -1;
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}
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return fd;
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}
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void set_defaults(void){
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scm_c_define("font", scm_from_locale_string("fixed"));
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}
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SCM guile_change_workspace(SCM g_which) {
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const char * which = scm_to_locale_string(g_which);
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if (con_get_fullscreen_con(croot, CF_GLOBAL)) {
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return scm_list_2(SCM_BOOL_F,
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scm_from_locale_string("Cannot switch workspace while in global fullscreen"));
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}
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// TODO: We don't need to parse anything!
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long parsed_num = ws_name_to_number(which);
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if (parsed_num == -1) {
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/* scm_simple_format */
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/* (SCM_BOOL_F, */
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/* "Could not parse initial part of ~A as a number.", */
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/* scm_list_1(which)) */
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return scm_list_2(SCM_BOOL_F, scm_from_locale_string("NaN"));
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}
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Con *workspace = get_existing_workspace_by_num(parsed_num);
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if (!workspace) {
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workspace_show_by_name(which);
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tree_render();
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return scm_list_2
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(SCM_BOOL_T,
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scm_simple_format(SCM_BOOL_F,
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scm_from_locale_string("There is no workspace with number ~S, creating a new one.\n"),
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scm_list_1(scm_from_int(parsed_num))));
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}
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workspace_show(workspace);
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tree_render();
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return SCM_BOOL_T;
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}
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// Force display update when a variable is changed
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// (eg. fonts)
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SCM guile_refresh() {
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config.font = load_font
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(scm_to_locale_string(scm_variable_ref(scm_c_lookup("font"))), false);
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set_font(&config.font);
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tree_render();
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return SCM_BOOL_T;
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}
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static void*
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register_functions_wm(void * data) {
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scm_c_define_gsubr ("bind-key", 2, 0, 0, &guile_register_keyboard_key);
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scm_c_define_gsubr ("change-workspace", 1, 0, 0, &guile_change_workspace);
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scm_c_define_gsubr ("refresh", 0, 0, 0, &guile_refresh);
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scm_c_define_gsubr ("kill-window", 0, 0, 0, &guile_kill);
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scm_c_define_gsubr ("split", 1, 0, 0, &guile_split);
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scm_c_define_gsubr ("focus-direction", 1, 0, 0, &guile_focus_direction);
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scm_c_define_gsubr ("layout", 1, 0, 0, &guile_layout);
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scm_c_define_gsubr ("toggle-layout", 1, 0, 0, &guile_layout_toggle);
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/* scm_c_define_gsubr ("move-to-workspace", 1, 0, 0, &guile_move_con_to_workspace); */
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scm_c_define_gsubr ("move-to-workspace", 1, 0, 0, &guile_move_con_to_workspace_name);
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scm_c_define_gsubr ("rename-workspace", 2, 0, 0, &guile_rename_workspace);
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scm_c_export("bind-key",
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"bind-key",
|
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"change-workspace",
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"refresh",
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"kill-window",
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"split",
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"focus-direction",
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"layout",
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"move-to-workspace",
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"toggle-layout", NULL);
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}
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static void*
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register_functions (void* data) {
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set_defaults();
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scm_c_define_module ("gri3 wm", register_functions_wm, data);
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return NULL;
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}
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int main(int argc, char *argv[]) {
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/* ELOG("GUILE PRE\n"); */
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scm_with_guile (®ister_functions, NULL);
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/* scm_shell (argc, argv); */
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/* ELOG("GUILE POST\n"); */
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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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static const char *_i3_version __attribute__((used)) = 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 disable_randr15 = false;
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char *fake_outputs = NULL;
|
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bool disable_signalhandler = false;
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bool only_check_config = 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-randr15", no_argument, 0, 0},
|
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{"disable_randr15", no_argument, 0, 0},
|
||
{"disable-signalhandler", no_argument, 0, 0},
|
||
{"shmlog-size", required_argument, 0, 0},
|
||
{"shmlog_size", required_argument, 0, 0},
|
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{"get-socketpath", no_argument, 0, 0},
|
||
{"get_socketpath", no_argument, 0, 0},
|
||
{"fake_outputs", required_argument, 0, 0},
|
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{"fake-outputs", required_argument, 0, 0},
|
||
{"force-old-config-parser-v4.4-only", no_argument, 0, 0},
|
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{0, 0, 0, 0}};
|
||
int option_index = 0, opt;
|
||
|
||
setlocale(LC_ALL, "");
|
||
|
||
/* Get the RLIMIT_CORE limit at startup time to restore this before
|
||
* starting processes. */
|
||
getrlimit(RLIMIT_CORE, &original_rlimit_core);
|
||
|
||
/* Disable output buffering to make redirects in .xsession actually useful for debugging */
|
||
if (!isatty(fileno(stdout)))
|
||
setbuf(stdout, NULL);
|
||
|
||
srand(time(NULL));
|
||
|
||
/* Init logging *before* initializing debug_build to guarantee early
|
||
* (file) logging. */
|
||
init_logging();
|
||
|
||
/* On release builds, disable SHM logging by default. */
|
||
shmlog_size = (is_debug_build() || strstr(argv[0], "i3-with-shmlog") != NULL ? default_shmlog_size : 0);
|
||
|
||
start_argv = argv;
|
||
|
||
while ((opt = getopt_long(argc, argv, "c:CvmaL:hld:V", long_options, &option_index)) != -1) {
|
||
switch (opt) {
|
||
case 'a':
|
||
LOG("Autostart disabled using -a\n");
|
||
autostart = false;
|
||
break;
|
||
case 'L':
|
||
FREE(layout_path);
|
||
layout_path = sstrdup(optarg);
|
||
delete_layout_path = false;
|
||
break;
|
||
case 'c':
|
||
FREE(override_configpath);
|
||
override_configpath = sstrdup(optarg);
|
||
break;
|
||
case 'C':
|
||
LOG("Checking configuration file only (-C)\n");
|
||
only_check_config = true;
|
||
break;
|
||
case 'v':
|
||
printf("i3 version %s © 2009 Michael Stapelberg and contributors\n", i3_version);
|
||
exit(EXIT_SUCCESS);
|
||
break;
|
||
case 'm':
|
||
printf("Binary i3 version: %s © 2009 Michael Stapelberg and contributors\n", i3_version);
|
||
display_running_version();
|
||
exit(EXIT_SUCCESS);
|
||
break;
|
||
case 'V':
|
||
set_verbosity(true);
|
||
break;
|
||
case 'd':
|
||
LOG("Enabling debug logging\n");
|
||
set_debug_logging(true);
|
||
break;
|
||
case 'l':
|
||
/* DEPRECATED, ignored for the next 3 versions (3.e, 3.f, 3.g) */
|
||
break;
|
||
case 0:
|
||
if (strcmp(long_options[option_index].name, "force-xinerama") == 0 ||
|
||
strcmp(long_options[option_index].name, "force_xinerama") == 0) {
|
||
force_xinerama = true;
|
||
ELOG("Using Xinerama instead of RandR. This option should be "
|
||
"avoided at all cost because it does not refresh the list "
|
||
"of screens, so you cannot configure displays at runtime. "
|
||
"Please check if your driver really does not support RandR "
|
||
"and disable this option as soon as you can.\n");
|
||
break;
|
||
} else if (strcmp(long_options[option_index].name, "disable-randr15") == 0 ||
|
||
strcmp(long_options[option_index].name, "disable_randr15") == 0) {
|
||
disable_randr15 = true;
|
||
break;
|
||
} else if (strcmp(long_options[option_index].name, "disable-signalhandler") == 0) {
|
||
disable_signalhandler = true;
|
||
break;
|
||
} else if (strcmp(long_options[option_index].name, "get-socketpath") == 0 ||
|
||
strcmp(long_options[option_index].name, "get_socketpath") == 0) {
|
||
char *socket_path = root_atom_contents("I3_SOCKET_PATH", NULL, 0);
|
||
if (socket_path) {
|
||
printf("%s\n", socket_path);
|
||
exit(EXIT_SUCCESS);
|
||
}
|
||
|
||
exit(EXIT_FAILURE);
|
||
} else if (strcmp(long_options[option_index].name, "shmlog-size") == 0 ||
|
||
strcmp(long_options[option_index].name, "shmlog_size") == 0) {
|
||
shmlog_size = atoi(optarg);
|
||
/* Re-initialize logging immediately to get as many
|
||
* logmessages as possible into the SHM log. */
|
||
init_logging();
|
||
LOG("Limiting SHM log size to %d bytes\n", shmlog_size);
|
||
break;
|
||
} else if (strcmp(long_options[option_index].name, "restart") == 0) {
|
||
FREE(layout_path);
|
||
layout_path = sstrdup(optarg);
|
||
delete_layout_path = true;
|
||
break;
|
||
} else if (strcmp(long_options[option_index].name, "fake-outputs") == 0 ||
|
||
strcmp(long_options[option_index].name, "fake_outputs") == 0) {
|
||
LOG("Initializing fake outputs: %s\n", optarg);
|
||
fake_outputs = sstrdup(optarg);
|
||
break;
|
||
} else if (strcmp(long_options[option_index].name, "force-old-config-parser-v4.4-only") == 0) {
|
||
ELOG("You are passing --force-old-config-parser-v4.4-only, but that flag was removed by now.\n");
|
||
break;
|
||
}
|
||
/* fall-through */
|
||
default:
|
||
fprintf(stderr, "Usage: %s [-c configfile] [-d all] [-a] [-v] [-V] [-C]\n", argv[0]);
|
||
fprintf(stderr, "\n");
|
||
fprintf(stderr, "\t-a disable autostart ('exec' lines in config)\n");
|
||
fprintf(stderr, "\t-c <file> use the provided configfile instead\n");
|
||
fprintf(stderr, "\t-C validate configuration file and exit\n");
|
||
fprintf(stderr, "\t-d all enable debug output\n");
|
||
fprintf(stderr, "\t-L <file> path to the serialized layout during restarts\n");
|
||
fprintf(stderr, "\t-v display version and exit\n");
|
||
fprintf(stderr, "\t-V enable verbose mode\n");
|
||
fprintf(stderr, "\n");
|
||
fprintf(stderr, "\t--force-xinerama\n"
|
||
"\tUse Xinerama instead of RandR.\n"
|
||
"\tThis option should only be used if you are stuck with the\n"
|
||
"\told nVidia closed source driver (older than 302.17), which does\n"
|
||
"\tnot support RandR.\n");
|
||
fprintf(stderr, "\n");
|
||
fprintf(stderr, "\t--get-socketpath\n"
|
||
"\tRetrieve the i3 IPC socket path from X11, print it, then exit.\n");
|
||
fprintf(stderr, "\n");
|
||
fprintf(stderr, "\t--shmlog-size <limit>\n"
|
||
"\tLimits the size of the i3 SHM log to <limit> bytes. Setting this\n"
|
||
"\tto 0 disables SHM logging entirely.\n"
|
||
"\tThe default is %d bytes.\n",
|
||
shmlog_size);
|
||
fprintf(stderr, "\n");
|
||
fprintf(stderr, "If you pass plain text arguments, i3 will interpret them as a command\n"
|
||
"to send to a currently running i3 (like i3-msg). This allows you to\n"
|
||
"use nice and logical commands, such as:\n"
|
||
"\n"
|
||
"\ti3 border none\n"
|
||
"\ti3 floating toggle\n"
|
||
"\ti3 kill window\n"
|
||
"\n");
|
||
exit(opt == 'h' ? EXIT_SUCCESS : EXIT_FAILURE);
|
||
}
|
||
}
|
||
|
||
if (only_check_config) {
|
||
exit(load_configuration(override_configpath, C_VALIDATE) ? EXIT_SUCCESS : EXIT_FAILURE);
|
||
}
|
||
|
||
/* If the user passes more arguments, we act like i3-msg would: Just send
|
||
* the arguments as an IPC message to i3. This allows for nice semantic
|
||
* commands such as 'i3 border none'. */
|
||
if (optind < argc) {
|
||
/* We enable verbose mode so that the user knows what’s going on.
|
||
* This should make it easier to find mistakes when the user passes
|
||
* arguments by mistake. */
|
||
set_verbosity(true);
|
||
|
||
LOG("Additional arguments passed. Sending them as a command to i3.\n");
|
||
char *payload = NULL;
|
||
while (optind < argc) {
|
||
if (!payload) {
|
||
payload = sstrdup(argv[optind]);
|
||
} else {
|
||
char *both;
|
||
sasprintf(&both, "%s %s", payload, argv[optind]);
|
||
free(payload);
|
||
payload = both;
|
||
}
|
||
optind++;
|
||
}
|
||
DLOG("Command is: %s (%zd bytes)\n", payload, strlen(payload));
|
||
char *socket_path = root_atom_contents("I3_SOCKET_PATH", NULL, 0);
|
||
if (!socket_path) {
|
||
ELOG("Could not get i3 IPC socket path\n");
|
||
return 1;
|
||
}
|
||
|
||
int sockfd = socket(AF_LOCAL, SOCK_STREAM, 0);
|
||
if (sockfd == -1)
|
||
err(EXIT_FAILURE, "Could not create socket");
|
||
|
||
struct sockaddr_un addr;
|
||
memset(&addr, 0, sizeof(struct sockaddr_un));
|
||
addr.sun_family = AF_LOCAL;
|
||
strncpy(addr.sun_path, socket_path, sizeof(addr.sun_path) - 1);
|
||
FREE(socket_path);
|
||
if (connect(sockfd, (const struct sockaddr *)&addr, sizeof(struct sockaddr_un)) < 0)
|
||
err(EXIT_FAILURE, "Could not connect to i3");
|
||
|
||
if (ipc_send_message(sockfd, strlen(payload), (uint8_t *)payload) == -1)
|
||
err(EXIT_FAILURE, "IPC: write()");
|
||
FREE(payload);
|
||
|
||
uint32_t reply_length;
|
||
uint8_t *reply;
|
||
int ret;
|
||
if ((ret = ipc_recv_message(sockfd, &reply_length, &reply)) != 0) {
|
||
if (ret == -1)
|
||
err(EXIT_FAILURE, "IPC: read()");
|
||
return 1;
|
||
}
|
||
printf("%.*s\n", reply_length, reply);
|
||
FREE(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. */
|
||
LOG("CORE DUMPS: You are running a development version of i3, so coredumps were automatically enabled (ulimit -c unlimited).\n");
|
||
size_t cwd_size = 1024;
|
||
char *cwd = smalloc(cwd_size);
|
||
char *cwd_ret;
|
||
while ((cwd_ret = getcwd(cwd, cwd_size)) == NULL && errno == ERANGE) {
|
||
cwd_size = cwd_size * 2;
|
||
cwd = srealloc(cwd, cwd_size);
|
||
}
|
||
if (cwd_ret != 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', cwd_size);
|
||
if (read(patternfd, cwd, cwd_size) > 0)
|
||
/* a trailing newline is included in cwd */
|
||
LOG("CORE DUMPS: Your core_pattern is: %s", cwd);
|
||
close(patternfd);
|
||
}
|
||
free(cwd);
|
||
}
|
||
|
||
LOG("i3 %s starting\n", i3_version);
|
||
|
||
conn = xcb_connect(NULL, &conn_screen);
|
||
if (xcb_connection_has_error(conn))
|
||
errx(EXIT_FAILURE, "Cannot open display");
|
||
|
||
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;
|
||
|
||
/* 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
|
||
|
||
root_depth = root_screen->root_depth;
|
||
colormap = root_screen->default_colormap;
|
||
visual_type = xcb_aux_find_visual_by_attrs(root_screen, -1, 32);
|
||
if (visual_type != NULL) {
|
||
root_depth = xcb_aux_get_depth_of_visual(root_screen, visual_type->visual_id);
|
||
colormap = xcb_generate_id(conn);
|
||
|
||
xcb_void_cookie_t cm_cookie = xcb_create_colormap_checked(conn,
|
||
XCB_COLORMAP_ALLOC_NONE,
|
||
colormap,
|
||
root,
|
||
visual_type->visual_id);
|
||
|
||
xcb_generic_error_t *error = xcb_request_check(conn, cm_cookie);
|
||
if (error != NULL) {
|
||
ELOG("Could not create colormap. Error code: %d\n", error->error_code);
|
||
exit(EXIT_FAILURE);
|
||
}
|
||
} else {
|
||
visual_type = get_visualtype(root_screen);
|
||
}
|
||
|
||
init_dpi();
|
||
|
||
DLOG("root_depth = %d, visual_id = 0x%08x.\n", root_depth, visual_type->visual_id);
|
||
DLOG("root_screen->height_in_pixels = %d, root_screen->height_in_millimeters = %d\n",
|
||
root_screen->height_in_pixels, root_screen->height_in_millimeters);
|
||
DLOG("One logical pixel corresponds to %d physical pixels on this display.\n", logical_px(1));
|
||
|
||
xcb_get_geometry_cookie_t gcookie = xcb_get_geometry(conn, root);
|
||
xcb_query_pointer_cookie_t pointercookie = xcb_query_pointer(conn, root);
|
||
|
||
/* 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
|
||
|
||
if (!load_keymap())
|
||
die("Could not load keymap\n");
|
||
|
||
load_configuration(override_configpath, C_LOAD);
|
||
|
||
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);
|
||
}
|
||
|
||
if (config.force_xinerama) {
|
||
force_xinerama = true;
|
||
}
|
||
|
||
xcb_void_cookie_t cookie;
|
||
cookie = xcb_change_window_attributes_checked(conn, root, XCB_CW_EVENT_MASK, (uint32_t[]){ROOT_EVENT_MASK});
|
||
xcb_generic_error_t *error = xcb_request_check(conn, cookie);
|
||
if (error != NULL) {
|
||
ELOG("Another window manager seems to be running (X error %d)\n", error->error_code);
|
||
#ifdef I3_ASAN_ENABLED
|
||
__lsan_do_leak_check();
|
||
#endif
|
||
return 1;
|
||
}
|
||
|
||
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);
|
||
|
||
xcursor_load_cursors();
|
||
|
||
/* Set a cursor for the root window (otherwise the root window will show no
|
||
cursor until the first client is launched). */
|
||
xcursor_set_root_cursor(XCURSOR_CURSOR_POINTER);
|
||
|
||
const xcb_query_extension_reply_t *extreply;
|
||
xcb_prefetch_extension_data(conn, &xcb_xkb_id);
|
||
xcb_prefetch_extension_data(conn, &xcb_shape_id);
|
||
|
||
extreply = xcb_get_extension_data(conn, &xcb_xkb_id);
|
||
xkb_supported = extreply->present;
|
||
if (!extreply->present) {
|
||
DLOG("xkb is not present on this server\n");
|
||
} else {
|
||
DLOG("initializing xcb-xkb\n");
|
||
xcb_xkb_use_extension(conn, XCB_XKB_MAJOR_VERSION, XCB_XKB_MINOR_VERSION);
|
||
xcb_xkb_select_events(conn,
|
||
XCB_XKB_ID_USE_CORE_KBD,
|
||
XCB_XKB_EVENT_TYPE_STATE_NOTIFY | XCB_XKB_EVENT_TYPE_MAP_NOTIFY | XCB_XKB_EVENT_TYPE_NEW_KEYBOARD_NOTIFY,
|
||
0,
|
||
XCB_XKB_EVENT_TYPE_STATE_NOTIFY | XCB_XKB_EVENT_TYPE_MAP_NOTIFY | XCB_XKB_EVENT_TYPE_NEW_KEYBOARD_NOTIFY,
|
||
0xff,
|
||
0xff,
|
||
NULL);
|
||
|
||
/* Setting both, XCB_XKB_PER_CLIENT_FLAG_GRABS_USE_XKB_STATE and
|
||
* XCB_XKB_PER_CLIENT_FLAG_LOOKUP_STATE_WHEN_GRABBED, will lead to the
|
||
* X server sending us the full XKB state in KeyPress and KeyRelease:
|
||
* https://cgit.freedesktop.org/xorg/xserver/tree/xkb/xkbEvents.c?h=xorg-server-1.20.0#n927
|
||
*
|
||
* XCB_XKB_PER_CLIENT_FLAG_DETECTABLE_AUTO_REPEAT enable detectable autorepeat:
|
||
* https://www.x.org/releases/current/doc/kbproto/xkbproto.html#Detectable_Autorepeat
|
||
* This affects bindings using the --release flag: instead of getting multiple KeyRelease
|
||
* events we get only one event when the key is physically released by the user.
|
||
*/
|
||
const uint32_t mask = XCB_XKB_PER_CLIENT_FLAG_GRABS_USE_XKB_STATE |
|
||
XCB_XKB_PER_CLIENT_FLAG_LOOKUP_STATE_WHEN_GRABBED |
|
||
XCB_XKB_PER_CLIENT_FLAG_DETECTABLE_AUTO_REPEAT;
|
||
xcb_xkb_per_client_flags_reply_t *pcf_reply;
|
||
/* The last three parameters are unset because they are only relevant
|
||
* when using a feature called “automatic reset of boolean controls”:
|
||
* https://www.x.org/releases/X11R7.7/doc/kbproto/xkbproto.html#Automatic_Reset_of_Boolean_Controls
|
||
* */
|
||
pcf_reply = xcb_xkb_per_client_flags_reply(
|
||
conn,
|
||
xcb_xkb_per_client_flags(
|
||
conn,
|
||
XCB_XKB_ID_USE_CORE_KBD,
|
||
mask,
|
||
mask,
|
||
0 /* uint32_t ctrlsToChange */,
|
||
0 /* uint32_t autoCtrls */,
|
||
0 /* uint32_t autoCtrlsValues */),
|
||
NULL);
|
||
|
||
#define PCF_REPLY_ERROR(_value) \
|
||
do { \
|
||
if (pcf_reply == NULL || !(pcf_reply->value & (_value))) { \
|
||
ELOG("Could not set " #_value "\n"); \
|
||
} \
|
||
} while (0)
|
||
|
||
PCF_REPLY_ERROR(XCB_XKB_PER_CLIENT_FLAG_GRABS_USE_XKB_STATE);
|
||
PCF_REPLY_ERROR(XCB_XKB_PER_CLIENT_FLAG_LOOKUP_STATE_WHEN_GRABBED);
|
||
PCF_REPLY_ERROR(XCB_XKB_PER_CLIENT_FLAG_DETECTABLE_AUTO_REPEAT);
|
||
|
||
free(pcf_reply);
|
||
xkb_base = extreply->first_event;
|
||
}
|
||
|
||
/* Check for Shape extension. We want to handle input shapes which is
|
||
* introduced in 1.1. */
|
||
extreply = xcb_get_extension_data(conn, &xcb_shape_id);
|
||
if (extreply->present) {
|
||
shape_base = extreply->first_event;
|
||
xcb_shape_query_version_cookie_t cookie = xcb_shape_query_version(conn);
|
||
xcb_shape_query_version_reply_t *version =
|
||
xcb_shape_query_version_reply(conn, cookie, NULL);
|
||
shape_supported = version && version->minor_version >= 1;
|
||
free(version);
|
||
} else {
|
||
shape_supported = false;
|
||
}
|
||
if (!shape_supported) {
|
||
DLOG("shape 1.1 is not present on this server\n");
|
||
}
|
||
|
||
restore_connect();
|
||
|
||
property_handlers_init();
|
||
|
||
ewmh_setup_hints();
|
||
|
||
keysyms = xcb_key_symbols_alloc(conn);
|
||
|
||
xcb_numlock_mask = aio_get_mod_mask_for(XCB_NUM_LOCK, keysyms);
|
||
|
||
/* if (!load_keymap()) */
|
||
/* die("Could not load keymap\n"); */
|
||
|
||
translate_keysyms();
|
||
grab_all_keys(conn);
|
||
|
||
bool needs_tree_init = true;
|
||
if (layout_path != NULL) {
|
||
LOG("Trying to restore the layout from \"%s\".\n", layout_path);
|
||
needs_tree_init = !tree_restore(layout_path, greply);
|
||
if (delete_layout_path) {
|
||
unlink(layout_path);
|
||
const char *dir = dirname(layout_path);
|
||
/* possibly fails with ENOTEMPTY if there are files (or
|
||
* sockets) left. */
|
||
rmdir(dir);
|
||
}
|
||
}
|
||
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) {
|
||
/* 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, disable_randr15 || config.disable_randr15);
|
||
}
|
||
|
||
/* We need to force disabling outputs which have been loaded from the
|
||
* layout file but are no longer active. This can happen if the output has
|
||
* been disabled in the short time between writing the restart layout file
|
||
* and restarting i3. See #2326. */
|
||
if (layout_path != NULL && randr_base > -1) {
|
||
Con *con;
|
||
TAILQ_FOREACH (con, &(croot->nodes_head), nodes) {
|
||
Output *output;
|
||
TAILQ_FOREACH (output, &outputs, outputs) {
|
||
if (output->active || strcmp(con->name, output_primary_name(output)) != 0)
|
||
continue;
|
||
|
||
/* This will correctly correlate the output with its content
|
||
* container. We need to make the connection to properly
|
||
* disable the output. */
|
||
if (output->con == NULL) {
|
||
output_init_con(output);
|
||
output->changed = false;
|
||
}
|
||
|
||
output->to_be_disabled = true;
|
||
randr_disable_output(output);
|
||
}
|
||
}
|
||
}
|
||
FREE(layout_path);
|
||
|
||
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);
|
||
}
|
||
}
|
||
if (!output) {
|
||
output = get_first_output();
|
||
}
|
||
con_activate(con_descend_focused(output_get_content(output->con)));
|
||
free(pointerreply);
|
||
|
||
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 {
|
||
struct ev_io *ipc_io = scalloc(1, 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(1, sizeof(struct ev_io));
|
||
ev_io_init(ipc_io, ipc_new_client, fd, EV_READ);
|
||
ev_io_start(main_loop, ipc_io);
|
||
}
|
||
}
|
||
|
||
{
|
||
const int restart_fd = parse_restart_fd();
|
||
if (restart_fd != -1) {
|
||
DLOG("serving restart fd %d", restart_fd);
|
||
ipc_client *client = ipc_new_client_on_fd(main_loop, restart_fd);
|
||
ipc_confirm_restart(client);
|
||
unsetenv("_I3_RESTART_FD");
|
||
}
|
||
}
|
||
|
||
/* Set up i3 specific atoms like I3_SOCKET_PATH and I3_CONFIG_PATH */
|
||
x_set_i3_atoms();
|
||
ewmh_update_workarea();
|
||
|
||
/* Set the ewmh desktop properties. */
|
||
ewmh_update_desktop_properties();
|
||
|
||
struct ev_io *xcb_watcher = scalloc(1, sizeof(struct ev_io));
|
||
xcb_prepare = scalloc(1, 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);
|
||
|
||
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);
|
||
|
||
if (autostart) {
|
||
LOG("This is not an in-place restart, copying root window contents to a pixmap\n");
|
||
xcb_screen_t *root = xcb_aux_get_screen(conn, conn_screen);
|
||
uint16_t width = root->width_in_pixels;
|
||
uint16_t height = root->height_in_pixels;
|
||
xcb_pixmap_t pixmap = xcb_generate_id(conn);
|
||
xcb_gcontext_t gc = xcb_generate_id(conn);
|
||
|
||
xcb_create_pixmap(conn, root->root_depth, pixmap, root->root, width, height);
|
||
|
||
xcb_create_gc(conn, gc, root->root,
|
||
XCB_GC_FUNCTION | XCB_GC_PLANE_MASK | XCB_GC_FILL_STYLE | XCB_GC_SUBWINDOW_MODE,
|
||
(uint32_t[]){XCB_GX_COPY, ~0, XCB_FILL_STYLE_SOLID, XCB_SUBWINDOW_MODE_INCLUDE_INFERIORS});
|
||
|
||
xcb_copy_area(conn, root->root, pixmap, gc, 0, 0, 0, 0, width, height);
|
||
xcb_change_window_attributes(conn, root->root, XCB_CW_BACK_PIXMAP, (uint32_t[]){pixmap});
|
||
xcb_flush(conn);
|
||
xcb_free_gc(conn, gc);
|
||
xcb_free_pixmap(conn, pixmap);
|
||
}
|
||
|
||
#if defined(__OpenBSD__)
|
||
if (pledge("stdio rpath wpath cpath proc exec unix", NULL) == -1)
|
||
err(EXIT_FAILURE, "pledge");
|
||
#endif
|
||
|
||
if (!disable_signalhandler)
|
||
setup_signal_handler();
|
||
else {
|
||
struct sigaction action;
|
||
|
||
action.sa_sigaction = handle_core_signal;
|
||
action.sa_flags = SA_NODEFER | SA_RESETHAND | SA_SIGINFO;
|
||
sigemptyset(&action.sa_mask);
|
||
|
||
/* 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.\n");
|
||
}
|
||
|
||
setup_term_handlers();
|
||
/* Ignore SIGPIPE to survive errors when an IPC client disconnects
|
||
* while we are sending them a message */
|
||
signal(SIGPIPE, SIG_IGN);
|
||
|
||
/* Autostarting exec-lines */
|
||
if (autostart) {
|
||
while (!TAILQ_EMPTY(&autostarts)) {
|
||
struct Autostart *exec = TAILQ_FIRST(&autostarts);
|
||
|
||
LOG("auto-starting %s\n", exec->command);
|
||
start_application(exec->command, exec->no_startup_id);
|
||
|
||
FREE(exec->command);
|
||
TAILQ_REMOVE(&autostarts, exec, autostarts);
|
||
FREE(exec);
|
||
}
|
||
}
|
||
|
||
/* Autostarting exec_always-lines */
|
||
while (!TAILQ_EMPTY(&autostarts_always)) {
|
||
struct Autostart *exec_always = TAILQ_FIRST(&autostarts_always);
|
||
|
||
LOG("auto-starting (always!) %s\n", exec_always->command);
|
||
start_application(exec_always->command, exec_always->no_startup_id);
|
||
|
||
FREE(exec_always->command);
|
||
TAILQ_REMOVE(&autostarts_always, exec_always, autostarts_always);
|
||
FREE(exec_always);
|
||
}
|
||
|
||
/* Start i3bar processes for all configured bars */
|
||
Barconfig *barconfig;
|
||
TAILQ_FOREACH (barconfig, &barconfigs, configs) {
|
||
char *command = NULL;
|
||
sasprintf(&command, "%s %s --bar_id=%s --socket=\"%s\"",
|
||
barconfig->i3bar_command ? barconfig->i3bar_command : "exec i3bar",
|
||
barconfig->verbose ? "-V" : "",
|
||
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 cleanup callbacks
|
||
* when calling exit() */
|
||
atexit(i3_exit);
|
||
|
||
ev_loop(main_loop, 0);
|
||
}
|