i3
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00001 /* 00002 * vim:ts=4:sw=4:expandtab 00003 * 00004 * i3 - an improved dynamic tiling window manager 00005 * © 2009-2011 Michael Stapelberg and contributors (see also: LICENSE) 00006 * 00007 * main.c: Initialization, main loop 00008 * 00009 */ 00010 #include <ev.h> 00011 #include <fcntl.h> 00012 #include <sys/types.h> 00013 #include <sys/socket.h> 00014 #include <sys/un.h> 00015 #include <sys/time.h> 00016 #include <sys/resource.h> 00017 #include "all.h" 00018 00019 #include "sd-daemon.h" 00020 00021 /* The original value of RLIMIT_CORE when i3 was started. We need to restore 00022 * this before starting any other process, since we set RLIMIT_CORE to 00023 * RLIM_INFINITY for i3 debugging versions. */ 00024 struct rlimit original_rlimit_core; 00025 00026 static int xkb_event_base; 00027 00028 int xkb_current_group; 00029 00030 extern Con *focused; 00031 00032 char **start_argv; 00033 00034 xcb_connection_t *conn; 00035 /* The screen (0 when you are using DISPLAY=:0) of the connection 'conn' */ 00036 int conn_screen; 00037 00038 /* Display handle for libstartup-notification */ 00039 SnDisplay *sndisplay; 00040 00041 /* The last timestamp we got from X11 (timestamps are included in some events 00042 * and are used for some things, like determining a unique ID in startup 00043 * notification). */ 00044 xcb_timestamp_t last_timestamp = XCB_CURRENT_TIME; 00045 00046 xcb_screen_t *root_screen; 00047 xcb_window_t root; 00048 uint8_t root_depth; 00049 00050 struct ev_loop *main_loop; 00051 00052 xcb_key_symbols_t *keysyms; 00053 00054 /* Those are our connections to X11 for use with libXcursor and XKB */ 00055 Display *xlibdpy, *xkbdpy; 00056 00057 /* The list of key bindings */ 00058 struct bindings_head *bindings; 00059 00060 /* The list of exec-lines */ 00061 struct autostarts_head autostarts = TAILQ_HEAD_INITIALIZER(autostarts); 00062 00063 /* The list of exec_always lines */ 00064 struct autostarts_always_head autostarts_always = TAILQ_HEAD_INITIALIZER(autostarts_always); 00065 00066 /* The list of assignments */ 00067 struct assignments_head assignments = TAILQ_HEAD_INITIALIZER(assignments); 00068 00069 /* The list of workspace assignments (which workspace should end up on which 00070 * output) */ 00071 struct ws_assignments_head ws_assignments = TAILQ_HEAD_INITIALIZER(ws_assignments); 00072 00073 /* We hope that those are supported and set them to true */ 00074 bool xcursor_supported = true; 00075 bool xkb_supported = true; 00076 00077 /* This will be set to true when -C is used so that functions can behave 00078 * slightly differently. We don’t want i3-nagbar to be started when validating 00079 * the config, for example. */ 00080 bool only_check_config = false; 00081 00082 /* 00083 * This callback is only a dummy, see xcb_prepare_cb and xcb_check_cb. 00084 * See also man libev(3): "ev_prepare" and "ev_check" - customise your event loop 00085 * 00086 */ 00087 static void xcb_got_event(EV_P_ struct ev_io *w, int revents) { 00088 /* empty, because xcb_prepare_cb and xcb_check_cb are used */ 00089 } 00090 00091 /* 00092 * Flush before blocking (and waiting for new events) 00093 * 00094 */ 00095 static void xcb_prepare_cb(EV_P_ ev_prepare *w, int revents) { 00096 xcb_flush(conn); 00097 } 00098 00099 /* 00100 * Instead of polling the X connection socket we leave this to 00101 * xcb_poll_for_event() which knows better than we can ever know. 00102 * 00103 */ 00104 static void xcb_check_cb(EV_P_ ev_check *w, int revents) { 00105 xcb_generic_event_t *event; 00106 00107 while ((event = xcb_poll_for_event(conn)) != NULL) { 00108 if (event->response_type == 0) { 00109 if (event_is_ignored(event->sequence, 0)) 00110 DLOG("Expected X11 Error received for sequence %x\n", event->sequence); 00111 else { 00112 xcb_generic_error_t *error = (xcb_generic_error_t*)event; 00113 ELOG("X11 Error received! sequence 0x%x, error_code = %d\n", 00114 error->sequence, error->error_code); 00115 } 00116 free(event); 00117 continue; 00118 } 00119 00120 /* Strip off the highest bit (set if the event is generated) */ 00121 int type = (event->response_type & 0x7F); 00122 00123 handle_event(type, event); 00124 00125 free(event); 00126 } 00127 } 00128 00129 00130 /* 00131 * When using xmodmap to change the keyboard mapping, this event 00132 * is only sent via XKB. Therefore, we need this special handler. 00133 * 00134 */ 00135 static void xkb_got_event(EV_P_ struct ev_io *w, int revents) { 00136 DLOG("Handling XKB event\n"); 00137 XkbEvent ev; 00138 00139 /* When using xmodmap, every change (!) gets an own event. 00140 * Therefore, we just read all events and only handle the 00141 * mapping_notify once. */ 00142 bool mapping_changed = false; 00143 while (XPending(xkbdpy)) { 00144 XNextEvent(xkbdpy, (XEvent*)&ev); 00145 /* While we should never receive a non-XKB event, 00146 * better do sanity checking */ 00147 if (ev.type != xkb_event_base) 00148 continue; 00149 00150 if (ev.any.xkb_type == XkbMapNotify) { 00151 mapping_changed = true; 00152 continue; 00153 } 00154 00155 if (ev.any.xkb_type != XkbStateNotify) { 00156 ELOG("Unknown XKB event received (type %d)\n", ev.any.xkb_type); 00157 continue; 00158 } 00159 00160 /* See The XKB Extension: Library Specification, section 14.1 */ 00161 /* We check if the current group (each group contains 00162 * two levels) has been changed. Mode_switch activates 00163 * group XkbGroup2Index */ 00164 if (xkb_current_group == ev.state.group) 00165 continue; 00166 00167 xkb_current_group = ev.state.group; 00168 00169 if (ev.state.group == XkbGroup2Index) { 00170 DLOG("Mode_switch enabled\n"); 00171 grab_all_keys(conn, true); 00172 } 00173 00174 if (ev.state.group == XkbGroup1Index) { 00175 DLOG("Mode_switch disabled\n"); 00176 ungrab_all_keys(conn); 00177 grab_all_keys(conn, false); 00178 } 00179 } 00180 00181 if (!mapping_changed) 00182 return; 00183 00184 DLOG("Keyboard mapping changed, updating keybindings\n"); 00185 xcb_key_symbols_free(keysyms); 00186 keysyms = xcb_key_symbols_alloc(conn); 00187 00188 xcb_numlock_mask = aio_get_mod_mask_for(XCB_NUM_LOCK, keysyms); 00189 00190 ungrab_all_keys(conn); 00191 DLOG("Re-grabbing...\n"); 00192 translate_keysyms(); 00193 grab_all_keys(conn, (xkb_current_group == XkbGroup2Index)); 00194 DLOG("Done\n"); 00195 } 00196 00197 /* 00198 * Exit handler which destroys the main_loop. Will trigger cleanup handlers. 00199 * 00200 */ 00201 static void i3_exit() { 00202 /* We need ev >= 4 for the following code. Since it is not *that* important (it 00203 * only makes sure that there are no i3-nagbar instances left behind) we still 00204 * support old systems with libev 3. */ 00205 #if EV_VERSION_MAJOR >= 4 00206 ev_loop_destroy(main_loop); 00207 #endif 00208 } 00209 00210 int main(int argc, char *argv[]) { 00211 char *override_configpath = NULL; 00212 bool autostart = true; 00213 char *layout_path = NULL; 00214 bool delete_layout_path = false; 00215 bool force_xinerama = false; 00216 bool disable_signalhandler = false; 00217 static struct option long_options[] = { 00218 {"no-autostart", no_argument, 0, 'a'}, 00219 {"config", required_argument, 0, 'c'}, 00220 {"version", no_argument, 0, 'v'}, 00221 {"help", no_argument, 0, 'h'}, 00222 {"layout", required_argument, 0, 'L'}, 00223 {"restart", required_argument, 0, 0}, 00224 {"force-xinerama", no_argument, 0, 0}, 00225 {"force_xinerama", no_argument, 0, 0}, 00226 {"disable-signalhandler", no_argument, 0, 0}, 00227 {"get-socketpath", no_argument, 0, 0}, 00228 {"get_socketpath", no_argument, 0, 0}, 00229 {0, 0, 0, 0} 00230 }; 00231 int option_index = 0, opt; 00232 00233 setlocale(LC_ALL, ""); 00234 00235 /* Get the RLIMIT_CORE limit at startup time to restore this before 00236 * starting processes. */ 00237 getrlimit(RLIMIT_CORE, &original_rlimit_core); 00238 00239 /* Disable output buffering to make redirects in .xsession actually useful for debugging */ 00240 if (!isatty(fileno(stdout))) 00241 setbuf(stdout, NULL); 00242 00243 srand(time(NULL)); 00244 00245 init_logging(); 00246 00247 start_argv = argv; 00248 00249 while ((opt = getopt_long(argc, argv, "c:CvaL:hld:V", long_options, &option_index)) != -1) { 00250 switch (opt) { 00251 case 'a': 00252 LOG("Autostart disabled using -a\n"); 00253 autostart = false; 00254 break; 00255 case 'L': 00256 FREE(layout_path); 00257 layout_path = sstrdup(optarg); 00258 delete_layout_path = false; 00259 break; 00260 case 'c': 00261 FREE(override_configpath); 00262 override_configpath = sstrdup(optarg); 00263 break; 00264 case 'C': 00265 LOG("Checking configuration file only (-C)\n"); 00266 only_check_config = true; 00267 break; 00268 case 'v': 00269 printf("i3 version " I3_VERSION " © 2009-2011 Michael Stapelberg and contributors\n"); 00270 exit(EXIT_SUCCESS); 00271 case 'V': 00272 set_verbosity(true); 00273 break; 00274 case 'd': 00275 LOG("Enabling debug loglevel %s\n", optarg); 00276 add_loglevel(optarg); 00277 break; 00278 case 'l': 00279 /* DEPRECATED, ignored for the next 3 versions (3.e, 3.f, 3.g) */ 00280 break; 00281 case 0: 00282 if (strcmp(long_options[option_index].name, "force-xinerama") == 0 || 00283 strcmp(long_options[option_index].name, "force_xinerama") == 0) { 00284 force_xinerama = true; 00285 ELOG("Using Xinerama instead of RandR. This option should be " 00286 "avoided at all cost because it does not refresh the list " 00287 "of screens, so you cannot configure displays at runtime. " 00288 "Please check if your driver really does not support RandR " 00289 "and disable this option as soon as you can.\n"); 00290 break; 00291 } else if (strcmp(long_options[option_index].name, "disable-signalhandler") == 0) { 00292 disable_signalhandler = true; 00293 break; 00294 } else if (strcmp(long_options[option_index].name, "get-socketpath") == 0 || 00295 strcmp(long_options[option_index].name, "get_socketpath") == 0) { 00296 char *socket_path = socket_path_from_x11(); 00297 if (socket_path) { 00298 printf("%s\n", socket_path); 00299 return 0; 00300 } 00301 00302 return 1; 00303 } else if (strcmp(long_options[option_index].name, "restart") == 0) { 00304 FREE(layout_path); 00305 layout_path = sstrdup(optarg); 00306 delete_layout_path = true; 00307 break; 00308 } 00309 /* fall-through */ 00310 default: 00311 fprintf(stderr, "Usage: %s [-c configfile] [-d loglevel] [-a] [-v] [-V] [-C]\n", argv[0]); 00312 fprintf(stderr, "\n"); 00313 fprintf(stderr, "\t-a disable autostart ('exec' lines in config)\n"); 00314 fprintf(stderr, "\t-c <file> use the provided configfile instead\n"); 00315 fprintf(stderr, "\t-C validate configuration file and exit\n"); 00316 fprintf(stderr, "\t-d <level> enable debug output with the specified loglevel\n"); 00317 fprintf(stderr, "\t-L <file> path to the serialized layout during restarts\n"); 00318 fprintf(stderr, "\t-v display version and exit\n"); 00319 fprintf(stderr, "\t-V enable verbose mode\n"); 00320 fprintf(stderr, "\n"); 00321 fprintf(stderr, "\t--force-xinerama\n" 00322 "\tUse Xinerama instead of RandR.\n" 00323 "\tThis option should only be used if you are stuck with the\n" 00324 "\tnvidia closed source driver which does not support RandR.\n"); 00325 fprintf(stderr, "\n"); 00326 fprintf(stderr, "\t--get-socketpath\n" 00327 "\tRetrieve the i3 IPC socket path from X11, print it, then exit.\n"); 00328 fprintf(stderr, "\n"); 00329 fprintf(stderr, "If you pass plain text arguments, i3 will interpret them as a command\n" 00330 "to send to a currently running i3 (like i3-msg). This allows you to\n" 00331 "use nice and logical commands, such as:\n" 00332 "\n" 00333 "\ti3 border none\n" 00334 "\ti3 floating toggle\n" 00335 "\ti3 kill window\n" 00336 "\n"); 00337 exit(EXIT_FAILURE); 00338 } 00339 } 00340 00341 /* If the user passes more arguments, we act like i3-msg would: Just send 00342 * the arguments as an IPC message to i3. This allows for nice semantic 00343 * commands such as 'i3 border none'. */ 00344 if (optind < argc) { 00345 /* We enable verbose mode so that the user knows what’s going on. 00346 * This should make it easier to find mistakes when the user passes 00347 * arguments by mistake. */ 00348 set_verbosity(true); 00349 00350 LOG("Additional arguments passed. Sending them as a command to i3.\n"); 00351 char *payload = NULL; 00352 while (optind < argc) { 00353 if (!payload) { 00354 payload = sstrdup(argv[optind]); 00355 } else { 00356 char *both; 00357 sasprintf(&both, "%s %s", payload, argv[optind]); 00358 free(payload); 00359 payload = both; 00360 } 00361 optind++; 00362 } 00363 LOG("Command is: %s (%d bytes)\n", payload, strlen(payload)); 00364 char *socket_path = socket_path_from_x11(); 00365 if (!socket_path) { 00366 ELOG("Could not get i3 IPC socket path\n"); 00367 return 1; 00368 } 00369 00370 int sockfd = socket(AF_LOCAL, SOCK_STREAM, 0); 00371 if (sockfd == -1) 00372 err(EXIT_FAILURE, "Could not create socket"); 00373 00374 struct sockaddr_un addr; 00375 memset(&addr, 0, sizeof(struct sockaddr_un)); 00376 addr.sun_family = AF_LOCAL; 00377 strncpy(addr.sun_path, socket_path, sizeof(addr.sun_path) - 1); 00378 if (connect(sockfd, (const struct sockaddr*)&addr, sizeof(struct sockaddr_un)) < 0) 00379 err(EXIT_FAILURE, "Could not connect to i3"); 00380 00381 if (ipc_send_message(sockfd, strlen(payload), I3_IPC_MESSAGE_TYPE_COMMAND, 00382 (uint8_t*)payload) == -1) 00383 err(EXIT_FAILURE, "IPC: write()"); 00384 00385 uint32_t reply_length; 00386 uint8_t *reply; 00387 int ret; 00388 if ((ret = ipc_recv_message(sockfd, I3_IPC_MESSAGE_TYPE_COMMAND, 00389 &reply_length, &reply)) != 0) { 00390 if (ret == -1) 00391 err(EXIT_FAILURE, "IPC: read()"); 00392 return 1; 00393 } 00394 printf("%.*s\n", reply_length, reply); 00395 return 0; 00396 } 00397 00398 /* I3_VERSION contains either something like this: 00399 * "4.0.2 (2011-11-11, branch "release")". 00400 * or: "4.0.2-123-gCOFFEEBABE (2011-11-11, branch "next")". 00401 * 00402 * So we check for the offset of the first opening round bracket to 00403 * determine whether this is a git version or a release version. */ 00404 if ((strchr(I3_VERSION, '(') - I3_VERSION) > 10) { 00405 struct rlimit limit = { RLIM_INFINITY, RLIM_INFINITY }; 00406 setrlimit(RLIMIT_CORE, &limit); 00407 00408 /* The following code is helpful, but not required. We thus don’t pay 00409 * much attention to error handling, non-linux or other edge cases. */ 00410 char cwd[PATH_MAX]; 00411 LOG("CORE DUMPS: You are running a development version of i3, so coredumps were automatically enabled (ulimit -c unlimited).\n"); 00412 if (getcwd(cwd, sizeof(cwd)) != NULL) 00413 LOG("CORE DUMPS: Your current working directory is \"%s\".\n", cwd); 00414 int patternfd; 00415 if ((patternfd = open("/proc/sys/kernel/core_pattern", O_RDONLY)) >= 0) { 00416 memset(cwd, '\0', sizeof(cwd)); 00417 if (read(patternfd, cwd, sizeof(cwd)) > 0) 00418 /* a trailing newline is included in cwd */ 00419 LOG("CORE DUMPS: Your core_pattern is: %s", cwd); 00420 close(patternfd); 00421 } 00422 } 00423 00424 LOG("i3 (tree) version " I3_VERSION " starting\n"); 00425 00426 conn = xcb_connect(NULL, &conn_screen); 00427 if (xcb_connection_has_error(conn)) 00428 errx(EXIT_FAILURE, "Cannot open display\n"); 00429 00430 sndisplay = sn_xcb_display_new(conn, NULL, NULL); 00431 00432 /* Initialize the libev event loop. This needs to be done before loading 00433 * the config file because the parser will install an ev_child watcher 00434 * for the nagbar when config errors are found. */ 00435 main_loop = EV_DEFAULT; 00436 if (main_loop == NULL) 00437 die("Could not initialize libev. Bad LIBEV_FLAGS?\n"); 00438 00439 root_screen = xcb_aux_get_screen(conn, conn_screen); 00440 root = root_screen->root; 00441 root_depth = root_screen->root_depth; 00442 xcb_get_geometry_cookie_t gcookie = xcb_get_geometry(conn, root); 00443 xcb_query_pointer_cookie_t pointercookie = xcb_query_pointer(conn, root); 00444 00445 load_configuration(conn, override_configpath, false); 00446 if (only_check_config) { 00447 LOG("Done checking configuration file. Exiting.\n"); 00448 exit(0); 00449 } 00450 00451 if (config.ipc_socket_path == NULL) { 00452 /* Fall back to a file name in /tmp/ based on the PID */ 00453 if ((config.ipc_socket_path = getenv("I3SOCK")) == NULL) 00454 config.ipc_socket_path = get_process_filename("ipc-socket"); 00455 else 00456 config.ipc_socket_path = sstrdup(config.ipc_socket_path); 00457 } 00458 00459 uint32_t mask = XCB_CW_EVENT_MASK; 00460 uint32_t values[] = { XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT | 00461 XCB_EVENT_MASK_STRUCTURE_NOTIFY | /* when the user adds a screen (e.g. video 00462 projector), the root window gets a 00463 ConfigureNotify */ 00464 XCB_EVENT_MASK_POINTER_MOTION | 00465 XCB_EVENT_MASK_PROPERTY_CHANGE | 00466 XCB_EVENT_MASK_ENTER_WINDOW }; 00467 xcb_void_cookie_t cookie; 00468 cookie = xcb_change_window_attributes_checked(conn, root, mask, values); 00469 check_error(conn, cookie, "Another window manager seems to be running"); 00470 00471 xcb_get_geometry_reply_t *greply = xcb_get_geometry_reply(conn, gcookie, NULL); 00472 if (greply == NULL) { 00473 ELOG("Could not get geometry of the root window, exiting\n"); 00474 return 1; 00475 } 00476 DLOG("root geometry reply: (%d, %d) %d x %d\n", greply->x, greply->y, greply->width, greply->height); 00477 00478 /* Place requests for the atoms we need as soon as possible */ 00479 #define xmacro(atom) \ 00480 xcb_intern_atom_cookie_t atom ## _cookie = xcb_intern_atom(conn, 0, strlen(#atom), #atom); 00481 #include "atoms.xmacro" 00482 #undef xmacro 00483 00484 /* Initialize the Xlib connection */ 00485 xlibdpy = xkbdpy = XOpenDisplay(NULL); 00486 00487 /* Try to load the X cursors and initialize the XKB extension */ 00488 if (xlibdpy == NULL) { 00489 ELOG("ERROR: XOpenDisplay() failed, disabling libXcursor/XKB support\n"); 00490 xcursor_supported = false; 00491 xkb_supported = false; 00492 } else if (fcntl(ConnectionNumber(xlibdpy), F_SETFD, FD_CLOEXEC) == -1) { 00493 ELOG("Could not set FD_CLOEXEC on xkbdpy\n"); 00494 return 1; 00495 } else { 00496 xcursor_load_cursors(); 00497 /*init_xkb();*/ 00498 } 00499 00500 /* Set a cursor for the root window (otherwise the root window will show no 00501 cursor until the first client is launched). */ 00502 if (xcursor_supported) 00503 xcursor_set_root_cursor(XCURSOR_CURSOR_POINTER); 00504 else xcb_set_root_cursor(XCURSOR_CURSOR_POINTER); 00505 00506 if (xkb_supported) { 00507 int errBase, 00508 major = XkbMajorVersion, 00509 minor = XkbMinorVersion; 00510 00511 if (fcntl(ConnectionNumber(xkbdpy), F_SETFD, FD_CLOEXEC) == -1) { 00512 fprintf(stderr, "Could not set FD_CLOEXEC on xkbdpy\n"); 00513 return 1; 00514 } 00515 00516 int i1; 00517 if (!XkbQueryExtension(xkbdpy,&i1,&xkb_event_base,&errBase,&major,&minor)) { 00518 fprintf(stderr, "XKB not supported by X-server\n"); 00519 return 1; 00520 } 00521 /* end of ugliness */ 00522 00523 if (!XkbSelectEvents(xkbdpy, XkbUseCoreKbd, 00524 XkbMapNotifyMask | XkbStateNotifyMask, 00525 XkbMapNotifyMask | XkbStateNotifyMask)) { 00526 fprintf(stderr, "Could not set XKB event mask\n"); 00527 return 1; 00528 } 00529 } 00530 00531 /* Setup NetWM atoms */ 00532 #define xmacro(name) \ 00533 do { \ 00534 xcb_intern_atom_reply_t *reply = xcb_intern_atom_reply(conn, name ## _cookie, NULL); \ 00535 if (!reply) { \ 00536 ELOG("Could not get atom " #name "\n"); \ 00537 exit(-1); \ 00538 } \ 00539 A_ ## name = reply->atom; \ 00540 free(reply); \ 00541 } while (0); 00542 #include "atoms.xmacro" 00543 #undef xmacro 00544 00545 property_handlers_init(); 00546 00547 ewmh_setup_hints(); 00548 00549 keysyms = xcb_key_symbols_alloc(conn); 00550 00551 xcb_numlock_mask = aio_get_mod_mask_for(XCB_NUM_LOCK, keysyms); 00552 00553 translate_keysyms(); 00554 grab_all_keys(conn, false); 00555 00556 bool needs_tree_init = true; 00557 if (layout_path) { 00558 LOG("Trying to restore the layout from %s...", layout_path); 00559 needs_tree_init = !tree_restore(layout_path, greply); 00560 if (delete_layout_path) 00561 unlink(layout_path); 00562 free(layout_path); 00563 } 00564 if (needs_tree_init) 00565 tree_init(greply); 00566 00567 free(greply); 00568 00569 /* Force Xinerama (for drivers which don't support RandR yet, esp. the 00570 * nVidia binary graphics driver), when specified either in the config 00571 * file or on command-line */ 00572 if (force_xinerama || config.force_xinerama) { 00573 xinerama_init(); 00574 } else { 00575 DLOG("Checking for XRandR...\n"); 00576 randr_init(&randr_base); 00577 } 00578 00579 xcb_query_pointer_reply_t *pointerreply; 00580 Output *output = NULL; 00581 if (!(pointerreply = xcb_query_pointer_reply(conn, pointercookie, NULL))) { 00582 ELOG("Could not query pointer position, using first screen\n"); 00583 output = get_first_output(); 00584 } else { 00585 DLOG("Pointer at %d, %d\n", pointerreply->root_x, pointerreply->root_y); 00586 output = get_output_containing(pointerreply->root_x, pointerreply->root_y); 00587 if (!output) { 00588 ELOG("ERROR: No screen at (%d, %d), starting on the first screen\n", 00589 pointerreply->root_x, pointerreply->root_y); 00590 output = get_first_output(); 00591 } 00592 00593 con_focus(con_descend_focused(output_get_content(output->con))); 00594 } 00595 00596 tree_render(); 00597 00598 /* Create the UNIX domain socket for IPC */ 00599 int ipc_socket = ipc_create_socket(config.ipc_socket_path); 00600 if (ipc_socket == -1) { 00601 ELOG("Could not create the IPC socket, IPC disabled\n"); 00602 } else { 00603 free(config.ipc_socket_path); 00604 struct ev_io *ipc_io = scalloc(sizeof(struct ev_io)); 00605 ev_io_init(ipc_io, ipc_new_client, ipc_socket, EV_READ); 00606 ev_io_start(main_loop, ipc_io); 00607 } 00608 00609 /* Also handle the UNIX domain sockets passed via socket activation */ 00610 int fds = sd_listen_fds(1); 00611 if (fds < 0) 00612 ELOG("socket activation: Error in sd_listen_fds\n"); 00613 else if (fds == 0) 00614 DLOG("socket activation: no sockets passed\n"); 00615 else { 00616 for (int fd = SD_LISTEN_FDS_START; fd < (SD_LISTEN_FDS_START + fds); fd++) { 00617 DLOG("socket activation: also listening on fd %d\n", fd); 00618 struct ev_io *ipc_io = scalloc(sizeof(struct ev_io)); 00619 ev_io_init(ipc_io, ipc_new_client, fd, EV_READ); 00620 ev_io_start(main_loop, ipc_io); 00621 } 00622 } 00623 00624 /* Set up i3 specific atoms like I3_SOCKET_PATH and I3_CONFIG_PATH */ 00625 x_set_i3_atoms(); 00626 00627 struct ev_io *xcb_watcher = scalloc(sizeof(struct ev_io)); 00628 struct ev_io *xkb = scalloc(sizeof(struct ev_io)); 00629 struct ev_check *xcb_check = scalloc(sizeof(struct ev_check)); 00630 struct ev_prepare *xcb_prepare = scalloc(sizeof(struct ev_prepare)); 00631 00632 ev_io_init(xcb_watcher, xcb_got_event, xcb_get_file_descriptor(conn), EV_READ); 00633 ev_io_start(main_loop, xcb_watcher); 00634 00635 00636 if (xkb_supported) { 00637 ev_io_init(xkb, xkb_got_event, ConnectionNumber(xkbdpy), EV_READ); 00638 ev_io_start(main_loop, xkb); 00639 00640 /* Flush the buffer so that libev can properly get new events */ 00641 XFlush(xkbdpy); 00642 } 00643 00644 ev_check_init(xcb_check, xcb_check_cb); 00645 ev_check_start(main_loop, xcb_check); 00646 00647 ev_prepare_init(xcb_prepare, xcb_prepare_cb); 00648 ev_prepare_start(main_loop, xcb_prepare); 00649 00650 xcb_flush(conn); 00651 00652 manage_existing_windows(root); 00653 00654 if (!disable_signalhandler) 00655 setup_signal_handler(); 00656 00657 /* Ignore SIGPIPE to survive errors when an IPC client disconnects 00658 * while we are sending him a message */ 00659 signal(SIGPIPE, SIG_IGN); 00660 00661 /* Autostarting exec-lines */ 00662 if (autostart) { 00663 struct Autostart *exec; 00664 TAILQ_FOREACH(exec, &autostarts, autostarts) { 00665 LOG("auto-starting %s\n", exec->command); 00666 start_application(exec->command, exec->no_startup_id); 00667 } 00668 } 00669 00670 /* Autostarting exec_always-lines */ 00671 struct Autostart *exec_always; 00672 TAILQ_FOREACH(exec_always, &autostarts_always, autostarts_always) { 00673 LOG("auto-starting (always!) %s\n", exec_always->command); 00674 start_application(exec_always->command, exec_always->no_startup_id); 00675 } 00676 00677 /* Start i3bar processes for all configured bars */ 00678 Barconfig *barconfig; 00679 TAILQ_FOREACH(barconfig, &barconfigs, configs) { 00680 char *command = NULL; 00681 sasprintf(&command, "i3bar --bar_id=%s --socket=\"%s\"", 00682 barconfig->id, current_socketpath); 00683 LOG("Starting bar process: %s\n", command); 00684 start_application(command, true); 00685 free(command); 00686 } 00687 00688 /* Make sure to destroy the event loop to invoke the cleeanup callbacks 00689 * when calling exit() */ 00690 atexit(i3_exit); 00691 00692 ev_loop(main_loop, 0); 00693 }