2 * vim:ts=4:sw=4:expandtab
4 * i3 - an improved dynamic tiling window manager
5 * © 2009-2012 Michael Stapelberg and contributors (see also: LICENSE)
7 * main.c: Initialization, main loop
12 #include <sys/types.h>
13 #include <sys/socket.h>
16 #include <sys/resource.h>
21 #include "sd-daemon.h"
23 /* The original value of RLIMIT_CORE when i3 was started. We need to restore
24 * this before starting any other process, since we set RLIMIT_CORE to
25 * RLIM_INFINITY for i3 debugging versions. */
26 struct rlimit original_rlimit_core;
28 /* Whether this version of i3 is a debug build or a release build. */
29 bool debug_build = false;
31 /** The number of file descriptors passed via socket activation. */
34 static int xkb_event_base;
36 int xkb_current_group;
42 xcb_connection_t *conn;
43 /* The screen (0 when you are using DISPLAY=:0) of the connection 'conn' */
46 /* Display handle for libstartup-notification */
49 /* The last timestamp we got from X11 (timestamps are included in some events
50 * and are used for some things, like determining a unique ID in startup
52 xcb_timestamp_t last_timestamp = XCB_CURRENT_TIME;
54 xcb_screen_t *root_screen;
58 struct ev_loop *main_loop;
60 xcb_key_symbols_t *keysyms;
62 /* Those are our connections to X11 for use with libXcursor and XKB */
63 Display *xlibdpy, *xkbdpy;
65 /* The list of key bindings */
66 struct bindings_head *bindings;
68 /* The list of exec-lines */
69 struct autostarts_head autostarts = TAILQ_HEAD_INITIALIZER(autostarts);
71 /* The list of exec_always lines */
72 struct autostarts_always_head autostarts_always = TAILQ_HEAD_INITIALIZER(autostarts_always);
74 /* The list of assignments */
75 struct assignments_head assignments = TAILQ_HEAD_INITIALIZER(assignments);
77 /* The list of workspace assignments (which workspace should end up on which
79 struct ws_assignments_head ws_assignments = TAILQ_HEAD_INITIALIZER(ws_assignments);
81 /* We hope that those are supported and set them to true */
82 bool xcursor_supported = true;
83 bool xkb_supported = true;
85 /* This will be set to true when -C is used so that functions can behave
86 * slightly differently. We don’t want i3-nagbar to be started when validating
87 * the config, for example. */
88 bool only_check_config = false;
91 * This callback is only a dummy, see xcb_prepare_cb and xcb_check_cb.
92 * See also man libev(3): "ev_prepare" and "ev_check" - customise your event loop
95 static void xcb_got_event(EV_P_ struct ev_io *w, int revents) {
96 /* empty, because xcb_prepare_cb and xcb_check_cb are used */
100 * Flush before blocking (and waiting for new events)
103 static void xcb_prepare_cb(EV_P_ ev_prepare *w, int revents) {
108 * Instead of polling the X connection socket we leave this to
109 * xcb_poll_for_event() which knows better than we can ever know.
112 static void xcb_check_cb(EV_P_ ev_check *w, int revents) {
113 xcb_generic_event_t *event;
115 while ((event = xcb_poll_for_event(conn)) != NULL) {
116 if (event->response_type == 0) {
117 if (event_is_ignored(event->sequence, 0))
118 DLOG("Expected X11 Error received for sequence %x\n", event->sequence);
120 xcb_generic_error_t *error = (xcb_generic_error_t*)event;
121 ELOG("X11 Error received! sequence 0x%x, error_code = %d\n",
122 error->sequence, error->error_code);
128 /* Strip off the highest bit (set if the event is generated) */
129 int type = (event->response_type & 0x7F);
131 handle_event(type, event);
139 * When using xmodmap to change the keyboard mapping, this event
140 * is only sent via XKB. Therefore, we need this special handler.
143 static void xkb_got_event(EV_P_ struct ev_io *w, int revents) {
144 DLOG("Handling XKB event\n");
147 /* When using xmodmap, every change (!) gets an own event.
148 * Therefore, we just read all events and only handle the
149 * mapping_notify once. */
150 bool mapping_changed = false;
151 while (XPending(xkbdpy)) {
152 XNextEvent(xkbdpy, (XEvent*)&ev);
153 /* While we should never receive a non-XKB event,
154 * better do sanity checking */
155 if (ev.type != xkb_event_base)
158 if (ev.any.xkb_type == XkbMapNotify) {
159 mapping_changed = true;
163 if (ev.any.xkb_type != XkbStateNotify) {
164 ELOG("Unknown XKB event received (type %d)\n", ev.any.xkb_type);
168 /* See The XKB Extension: Library Specification, section 14.1 */
169 /* We check if the current group (each group contains
170 * two levels) has been changed. Mode_switch activates
171 * group XkbGroup2Index */
172 if (xkb_current_group == ev.state.group)
175 xkb_current_group = ev.state.group;
177 if (ev.state.group == XkbGroup2Index) {
178 DLOG("Mode_switch enabled\n");
179 grab_all_keys(conn, true);
182 if (ev.state.group == XkbGroup1Index) {
183 DLOG("Mode_switch disabled\n");
184 ungrab_all_keys(conn);
185 grab_all_keys(conn, false);
189 if (!mapping_changed)
192 DLOG("Keyboard mapping changed, updating keybindings\n");
193 xcb_key_symbols_free(keysyms);
194 keysyms = xcb_key_symbols_alloc(conn);
196 xcb_numlock_mask = aio_get_mod_mask_for(XCB_NUM_LOCK, keysyms);
198 ungrab_all_keys(conn);
199 DLOG("Re-grabbing...\n");
201 grab_all_keys(conn, (xkb_current_group == XkbGroup2Index));
206 * Exit handler which destroys the main_loop. Will trigger cleanup handlers.
209 static void i3_exit() {
210 /* We need ev >= 4 for the following code. Since it is not *that* important (it
211 * only makes sure that there are no i3-nagbar instances left behind) we still
212 * support old systems with libev 3. */
213 #if EV_VERSION_MAJOR >= 4
214 ev_loop_destroy(main_loop);
217 if (*shmlogname != '\0') {
218 fprintf(stderr, "Closing SHM log \"%s\"\n", shmlogname);
220 shm_unlink(shmlogname);
225 * (One-shot) Handler for all signals with default action "Term", see signal(7)
227 * Unlinks the SHM log and re-raises the signal.
230 static void handle_signal(int sig, siginfo_t *info, void *data) {
231 fprintf(stderr, "Received signal %d, terminating\n", sig);
232 if (*shmlogname != '\0') {
233 fprintf(stderr, "Closing SHM log \"%s\"\n", shmlogname);
234 shm_unlink(shmlogname);
240 int main(int argc, char *argv[]) {
241 char *override_configpath = NULL;
242 bool autostart = true;
243 char *layout_path = NULL;
244 bool delete_layout_path = false;
245 bool force_xinerama = false;
246 bool disable_signalhandler = false;
247 static struct option long_options[] = {
248 {"no-autostart", no_argument, 0, 'a'},
249 {"config", required_argument, 0, 'c'},
250 {"version", no_argument, 0, 'v'},
251 {"help", no_argument, 0, 'h'},
252 {"layout", required_argument, 0, 'L'},
253 {"restart", required_argument, 0, 0},
254 {"force-xinerama", no_argument, 0, 0},
255 {"force_xinerama", no_argument, 0, 0},
256 {"disable-signalhandler", no_argument, 0, 0},
257 {"shmlog-size", required_argument, 0, 0},
258 {"shmlog_size", required_argument, 0, 0},
259 {"get-socketpath", no_argument, 0, 0},
260 {"get_socketpath", no_argument, 0, 0},
263 int option_index = 0, opt;
265 setlocale(LC_ALL, "");
267 /* Get the RLIMIT_CORE limit at startup time to restore this before
268 * starting processes. */
269 getrlimit(RLIMIT_CORE, &original_rlimit_core);
271 /* Disable output buffering to make redirects in .xsession actually useful for debugging */
272 if (!isatty(fileno(stdout)))
273 setbuf(stdout, NULL);
277 /* Init logging *before* initializing debug_build to guarantee early
281 /* I3_VERSION contains either something like this:
282 * "4.0.2 (2011-11-11, branch "release")".
283 * or: "4.0.2-123-gCOFFEEBABE (2011-11-11, branch "next")".
285 * So we check for the offset of the first opening round bracket to
286 * determine whether this is a git version or a release version. */
287 debug_build = ((strchr(I3_VERSION, '(') - I3_VERSION) > 10);
289 /* On non-release builds, disable SHM logging by default. */
290 shmlog_size = (debug_build ? 25 * 1024 * 1024 : 0);
294 while ((opt = getopt_long(argc, argv, "c:CvaL:hld:V", long_options, &option_index)) != -1) {
297 LOG("Autostart disabled using -a\n");
302 layout_path = sstrdup(optarg);
303 delete_layout_path = false;
306 FREE(override_configpath);
307 override_configpath = sstrdup(optarg);
310 LOG("Checking configuration file only (-C)\n");
311 only_check_config = true;
314 printf("i3 version " I3_VERSION " © 2009-2011 Michael Stapelberg and contributors\n");
320 LOG("Enabling debug loglevel %s\n", optarg);
321 add_loglevel(optarg);
324 /* DEPRECATED, ignored for the next 3 versions (3.e, 3.f, 3.g) */
327 if (strcmp(long_options[option_index].name, "force-xinerama") == 0 ||
328 strcmp(long_options[option_index].name, "force_xinerama") == 0) {
329 force_xinerama = true;
330 ELOG("Using Xinerama instead of RandR. This option should be "
331 "avoided at all cost because it does not refresh the list "
332 "of screens, so you cannot configure displays at runtime. "
333 "Please check if your driver really does not support RandR "
334 "and disable this option as soon as you can.\n");
336 } else if (strcmp(long_options[option_index].name, "disable-signalhandler") == 0) {
337 disable_signalhandler = true;
339 } else if (strcmp(long_options[option_index].name, "get-socketpath") == 0 ||
340 strcmp(long_options[option_index].name, "get_socketpath") == 0) {
341 char *socket_path = root_atom_contents("I3_SOCKET_PATH");
343 printf("%s\n", socket_path);
348 } else if (strcmp(long_options[option_index].name, "shmlog-size") == 0 ||
349 strcmp(long_options[option_index].name, "shmlog_size") == 0) {
350 shmlog_size = atoi(optarg);
351 /* Re-initialize logging immediately to get as many
352 * logmessages as possible into the SHM log. */
354 LOG("Limiting SHM log size to %d bytes\n", shmlog_size);
356 } else if (strcmp(long_options[option_index].name, "restart") == 0) {
358 layout_path = sstrdup(optarg);
359 delete_layout_path = true;
364 fprintf(stderr, "Usage: %s [-c configfile] [-d loglevel] [-a] [-v] [-V] [-C]\n", argv[0]);
365 fprintf(stderr, "\n");
366 fprintf(stderr, "\t-a disable autostart ('exec' lines in config)\n");
367 fprintf(stderr, "\t-c <file> use the provided configfile instead\n");
368 fprintf(stderr, "\t-C validate configuration file and exit\n");
369 fprintf(stderr, "\t-d <level> enable debug output with the specified loglevel\n");
370 fprintf(stderr, "\t-L <file> path to the serialized layout during restarts\n");
371 fprintf(stderr, "\t-v display version and exit\n");
372 fprintf(stderr, "\t-V enable verbose mode\n");
373 fprintf(stderr, "\n");
374 fprintf(stderr, "\t--force-xinerama\n"
375 "\tUse Xinerama instead of RandR.\n"
376 "\tThis option should only be used if you are stuck with the\n"
377 "\tnvidia closed source driver which does not support RandR.\n");
378 fprintf(stderr, "\n");
379 fprintf(stderr, "\t--get-socketpath\n"
380 "\tRetrieve the i3 IPC socket path from X11, print it, then exit.\n");
381 fprintf(stderr, "\n");
382 fprintf(stderr, "\t--shmlog-size <limit>\n"
383 "\tLimits the size of the i3 SHM log to <limit> bytes. Setting this\n"
384 "\tto 0 disables SHM logging entirely.\n"
385 "\tThe default is %d bytes.\n", shmlog_size);
386 fprintf(stderr, "\n");
387 fprintf(stderr, "If you pass plain text arguments, i3 will interpret them as a command\n"
388 "to send to a currently running i3 (like i3-msg). This allows you to\n"
389 "use nice and logical commands, such as:\n"
392 "\ti3 floating toggle\n"
399 /* If the user passes more arguments, we act like i3-msg would: Just send
400 * the arguments as an IPC message to i3. This allows for nice semantic
401 * commands such as 'i3 border none'. */
403 /* We enable verbose mode so that the user knows what’s going on.
404 * This should make it easier to find mistakes when the user passes
405 * arguments by mistake. */
408 LOG("Additional arguments passed. Sending them as a command to i3.\n");
409 char *payload = NULL;
410 while (optind < argc) {
412 payload = sstrdup(argv[optind]);
415 sasprintf(&both, "%s %s", payload, argv[optind]);
421 LOG("Command is: %s (%d bytes)\n", payload, strlen(payload));
422 char *socket_path = root_atom_contents("I3_SOCKET_PATH");
424 ELOG("Could not get i3 IPC socket path\n");
428 int sockfd = socket(AF_LOCAL, SOCK_STREAM, 0);
430 err(EXIT_FAILURE, "Could not create socket");
432 struct sockaddr_un addr;
433 memset(&addr, 0, sizeof(struct sockaddr_un));
434 addr.sun_family = AF_LOCAL;
435 strncpy(addr.sun_path, socket_path, sizeof(addr.sun_path) - 1);
436 if (connect(sockfd, (const struct sockaddr*)&addr, sizeof(struct sockaddr_un)) < 0)
437 err(EXIT_FAILURE, "Could not connect to i3");
439 if (ipc_send_message(sockfd, strlen(payload), I3_IPC_MESSAGE_TYPE_COMMAND,
440 (uint8_t*)payload) == -1)
441 err(EXIT_FAILURE, "IPC: write()");
443 uint32_t reply_length;
446 if ((ret = ipc_recv_message(sockfd, I3_IPC_MESSAGE_TYPE_COMMAND,
447 &reply_length, &reply)) != 0) {
449 err(EXIT_FAILURE, "IPC: read()");
452 printf("%.*s\n", reply_length, reply);
456 /* Enable logging to handle the case when the user did not specify --shmlog-size */
459 /* Try to enable core dumps by default when running a debug build */
461 struct rlimit limit = { RLIM_INFINITY, RLIM_INFINITY };
462 setrlimit(RLIMIT_CORE, &limit);
464 /* The following code is helpful, but not required. We thus don’t pay
465 * much attention to error handling, non-linux or other edge cases. */
467 LOG("CORE DUMPS: You are running a development version of i3, so coredumps were automatically enabled (ulimit -c unlimited).\n");
468 if (getcwd(cwd, sizeof(cwd)) != NULL)
469 LOG("CORE DUMPS: Your current working directory is \"%s\".\n", cwd);
471 if ((patternfd = open("/proc/sys/kernel/core_pattern", O_RDONLY)) >= 0) {
472 memset(cwd, '\0', sizeof(cwd));
473 if (read(patternfd, cwd, sizeof(cwd)) > 0)
474 /* a trailing newline is included in cwd */
475 LOG("CORE DUMPS: Your core_pattern is: %s", cwd);
480 LOG("i3 (tree) version " I3_VERSION " starting\n");
482 conn = xcb_connect(NULL, &conn_screen);
483 if (xcb_connection_has_error(conn))
484 errx(EXIT_FAILURE, "Cannot open display\n");
486 sndisplay = sn_xcb_display_new(conn, NULL, NULL);
488 /* Initialize the libev event loop. This needs to be done before loading
489 * the config file because the parser will install an ev_child watcher
490 * for the nagbar when config errors are found. */
491 main_loop = EV_DEFAULT;
492 if (main_loop == NULL)
493 die("Could not initialize libev. Bad LIBEV_FLAGS?\n");
495 root_screen = xcb_aux_get_screen(conn, conn_screen);
496 root = root_screen->root;
497 root_depth = root_screen->root_depth;
498 xcb_get_geometry_cookie_t gcookie = xcb_get_geometry(conn, root);
499 xcb_query_pointer_cookie_t pointercookie = xcb_query_pointer(conn, root);
501 load_configuration(conn, override_configpath, false);
502 if (only_check_config) {
503 LOG("Done checking configuration file. Exiting.\n");
507 if (config.ipc_socket_path == NULL) {
508 /* Fall back to a file name in /tmp/ based on the PID */
509 if ((config.ipc_socket_path = getenv("I3SOCK")) == NULL)
510 config.ipc_socket_path = get_process_filename("ipc-socket");
512 config.ipc_socket_path = sstrdup(config.ipc_socket_path);
515 uint32_t mask = XCB_CW_EVENT_MASK;
516 uint32_t values[] = { XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT |
517 XCB_EVENT_MASK_STRUCTURE_NOTIFY | /* when the user adds a screen (e.g. video
518 projector), the root window gets a
520 XCB_EVENT_MASK_POINTER_MOTION |
521 XCB_EVENT_MASK_PROPERTY_CHANGE |
522 XCB_EVENT_MASK_ENTER_WINDOW };
523 xcb_void_cookie_t cookie;
524 cookie = xcb_change_window_attributes_checked(conn, root, mask, values);
525 check_error(conn, cookie, "Another window manager seems to be running");
527 xcb_get_geometry_reply_t *greply = xcb_get_geometry_reply(conn, gcookie, NULL);
528 if (greply == NULL) {
529 ELOG("Could not get geometry of the root window, exiting\n");
532 DLOG("root geometry reply: (%d, %d) %d x %d\n", greply->x, greply->y, greply->width, greply->height);
534 /* Place requests for the atoms we need as soon as possible */
535 #define xmacro(atom) \
536 xcb_intern_atom_cookie_t atom ## _cookie = xcb_intern_atom(conn, 0, strlen(#atom), #atom);
537 #include "atoms.xmacro"
540 /* Initialize the Xlib connection */
541 xlibdpy = xkbdpy = XOpenDisplay(NULL);
543 /* Try to load the X cursors and initialize the XKB extension */
544 if (xlibdpy == NULL) {
545 ELOG("ERROR: XOpenDisplay() failed, disabling libXcursor/XKB support\n");
546 xcursor_supported = false;
547 xkb_supported = false;
548 } else if (fcntl(ConnectionNumber(xlibdpy), F_SETFD, FD_CLOEXEC) == -1) {
549 ELOG("Could not set FD_CLOEXEC on xkbdpy\n");
552 xcursor_load_cursors();
556 /* Set a cursor for the root window (otherwise the root window will show no
557 cursor until the first client is launched). */
558 if (xcursor_supported)
559 xcursor_set_root_cursor(XCURSOR_CURSOR_POINTER);
560 else xcb_set_root_cursor(XCURSOR_CURSOR_POINTER);
564 major = XkbMajorVersion,
565 minor = XkbMinorVersion;
567 if (fcntl(ConnectionNumber(xkbdpy), F_SETFD, FD_CLOEXEC) == -1) {
568 fprintf(stderr, "Could not set FD_CLOEXEC on xkbdpy\n");
573 if (!XkbQueryExtension(xkbdpy,&i1,&xkb_event_base,&errBase,&major,&minor)) {
574 fprintf(stderr, "XKB not supported by X-server\n");
577 /* end of ugliness */
579 if (!XkbSelectEvents(xkbdpy, XkbUseCoreKbd,
580 XkbMapNotifyMask | XkbStateNotifyMask,
581 XkbMapNotifyMask | XkbStateNotifyMask)) {
582 fprintf(stderr, "Could not set XKB event mask\n");
587 /* Setup NetWM atoms */
588 #define xmacro(name) \
590 xcb_intern_atom_reply_t *reply = xcb_intern_atom_reply(conn, name ## _cookie, NULL); \
592 ELOG("Could not get atom " #name "\n"); \
595 A_ ## name = reply->atom; \
598 #include "atoms.xmacro"
601 property_handlers_init();
605 keysyms = xcb_key_symbols_alloc(conn);
607 xcb_numlock_mask = aio_get_mod_mask_for(XCB_NUM_LOCK, keysyms);
610 grab_all_keys(conn, false);
612 bool needs_tree_init = true;
614 LOG("Trying to restore the layout from %s...", layout_path);
615 needs_tree_init = !tree_restore(layout_path, greply);
616 if (delete_layout_path)
625 /* Force Xinerama (for drivers which don't support RandR yet, esp. the
626 * nVidia binary graphics driver), when specified either in the config
627 * file or on command-line */
628 if (force_xinerama || config.force_xinerama) {
631 DLOG("Checking for XRandR...\n");
632 randr_init(&randr_base);
635 xcb_query_pointer_reply_t *pointerreply;
636 Output *output = NULL;
637 if (!(pointerreply = xcb_query_pointer_reply(conn, pointercookie, NULL))) {
638 ELOG("Could not query pointer position, using first screen\n");
639 output = get_first_output();
641 DLOG("Pointer at %d, %d\n", pointerreply->root_x, pointerreply->root_y);
642 output = get_output_containing(pointerreply->root_x, pointerreply->root_y);
644 ELOG("ERROR: No screen at (%d, %d), starting on the first screen\n",
645 pointerreply->root_x, pointerreply->root_y);
646 output = get_first_output();
649 con_focus(con_descend_focused(output_get_content(output->con)));
654 /* Create the UNIX domain socket for IPC */
655 int ipc_socket = ipc_create_socket(config.ipc_socket_path);
656 if (ipc_socket == -1) {
657 ELOG("Could not create the IPC socket, IPC disabled\n");
659 free(config.ipc_socket_path);
660 struct ev_io *ipc_io = scalloc(sizeof(struct ev_io));
661 ev_io_init(ipc_io, ipc_new_client, ipc_socket, EV_READ);
662 ev_io_start(main_loop, ipc_io);
665 /* Also handle the UNIX domain sockets passed via socket activation. The
666 * parameter 1 means "remove the environment variables", we don’t want to
667 * pass these to child processes. */
668 listen_fds = sd_listen_fds(0);
670 ELOG("socket activation: Error in sd_listen_fds\n");
671 else if (listen_fds == 0)
672 DLOG("socket activation: no sockets passed\n");
675 for (int fd = SD_LISTEN_FDS_START;
676 fd < (SD_LISTEN_FDS_START + listen_fds);
678 DLOG("socket activation: also listening on fd %d\n", fd);
680 /* sd_listen_fds() enables FD_CLOEXEC by default.
681 * However, we need to keep the file descriptors open for in-place
682 * restarting, therefore we explicitly disable FD_CLOEXEC. */
683 if ((flags = fcntl(fd, F_GETFD)) < 0 ||
684 fcntl(fd, F_SETFD, flags & ~FD_CLOEXEC) < 0) {
685 ELOG("Could not disable FD_CLOEXEC on fd %d\n", fd);
688 struct ev_io *ipc_io = scalloc(sizeof(struct ev_io));
689 ev_io_init(ipc_io, ipc_new_client, fd, EV_READ);
690 ev_io_start(main_loop, ipc_io);
694 /* Set up i3 specific atoms like I3_SOCKET_PATH and I3_CONFIG_PATH */
697 struct ev_io *xcb_watcher = scalloc(sizeof(struct ev_io));
698 struct ev_io *xkb = scalloc(sizeof(struct ev_io));
699 struct ev_check *xcb_check = scalloc(sizeof(struct ev_check));
700 struct ev_prepare *xcb_prepare = scalloc(sizeof(struct ev_prepare));
702 ev_io_init(xcb_watcher, xcb_got_event, xcb_get_file_descriptor(conn), EV_READ);
703 ev_io_start(main_loop, xcb_watcher);
707 ev_io_init(xkb, xkb_got_event, ConnectionNumber(xkbdpy), EV_READ);
708 ev_io_start(main_loop, xkb);
710 /* Flush the buffer so that libev can properly get new events */
714 ev_check_init(xcb_check, xcb_check_cb);
715 ev_check_start(main_loop, xcb_check);
717 ev_prepare_init(xcb_prepare, xcb_prepare_cb);
718 ev_prepare_start(main_loop, xcb_prepare);
722 manage_existing_windows(root);
724 struct sigaction action;
726 action.sa_sigaction = handle_signal;
727 action.sa_flags = SA_NODEFER | SA_RESETHAND | SA_SIGINFO;
728 sigemptyset(&action.sa_mask);
730 if (!disable_signalhandler)
731 setup_signal_handler();
733 /* Catch all signals with default action "Core", see signal(7) */
734 if (sigaction(SIGQUIT, &action, NULL) == -1 ||
735 sigaction(SIGILL, &action, NULL) == -1 ||
736 sigaction(SIGABRT, &action, NULL) == -1 ||
737 sigaction(SIGFPE, &action, NULL) == -1 ||
738 sigaction(SIGSEGV, &action, NULL) == -1)
739 ELOG("Could not setup signal handler");
742 /* Catch all signals with default action "Term", see signal(7) */
743 if (sigaction(SIGHUP, &action, NULL) == -1 ||
744 sigaction(SIGINT, &action, NULL) == -1 ||
745 sigaction(SIGALRM, &action, NULL) == -1 ||
746 sigaction(SIGUSR1, &action, NULL) == -1 ||
747 sigaction(SIGUSR2, &action, NULL) == -1)
748 ELOG("Could not setup signal handler");
750 /* Ignore SIGPIPE to survive errors when an IPC client disconnects
751 * while we are sending him a message */
752 signal(SIGPIPE, SIG_IGN);
754 /* Autostarting exec-lines */
756 struct Autostart *exec;
757 TAILQ_FOREACH(exec, &autostarts, autostarts) {
758 LOG("auto-starting %s\n", exec->command);
759 start_application(exec->command, exec->no_startup_id);
763 /* Autostarting exec_always-lines */
764 struct Autostart *exec_always;
765 TAILQ_FOREACH(exec_always, &autostarts_always, autostarts_always) {
766 LOG("auto-starting (always!) %s\n", exec_always->command);
767 start_application(exec_always->command, exec_always->no_startup_id);
770 /* Start i3bar processes for all configured bars */
771 Barconfig *barconfig;
772 TAILQ_FOREACH(barconfig, &barconfigs, configs) {
773 char *command = NULL;
774 sasprintf(&command, "%s --bar_id=%s --socket=\"%s\"",
775 barconfig->i3bar_command ? barconfig->i3bar_command : "i3bar",
776 barconfig->id, current_socketpath);
777 LOG("Starting bar process: %s\n", command);
778 start_application(command, true);
782 /* Make sure to destroy the event loop to invoke the cleeanup callbacks
783 * when calling exit() */
786 ev_loop(main_loop, 0);