/*
* vim:ts=4:sw=4:expandtab
+ *
+ * i3 - an improved dynamic tiling window manager
+ * © 2009-2011 Michael Stapelberg and contributors (see also: LICENSE)
+ *
+ * main.c: Initialization, main loop
+ *
*/
#include <ev.h>
#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <sys/time.h>
+#include <sys/resource.h>
#include "all.h"
#include "sd-daemon.h"
+/* The original value of RLIMIT_CORE when i3 was started. We need to restore
+ * this before starting any other process, since we set RLIMIT_CORE to
+ * RLIM_INFINITY for i3 debugging versions. */
+struct rlimit original_rlimit_core;
+
static int xkb_event_base;
int xkb_current_group;
char **start_argv;
xcb_connection_t *conn;
+/* The screen (0 when you are using DISPLAY=:0) of the connection 'conn' */
+int conn_screen;
+
+/* Display handle for libstartup-notification */
+SnDisplay *sndisplay;
+
+/* The last timestamp we got from X11 (timestamps are included in some events
+ * and are used for some things, like determining a unique ID in startup
+ * notification). */
+xcb_timestamp_t last_timestamp = XCB_CURRENT_TIME;
xcb_screen_t *root_screen;
xcb_window_t root;
bool xcursor_supported = true;
bool xkb_supported = true;
+/* This will be set to true when -C is used so that functions can behave
+ * slightly differently. We don’t want i3-nagbar to be started when validating
+ * the config, for example. */
+bool only_check_config = false;
+
/*
* This callback is only a dummy, see xcb_prepare_cb and xcb_check_cb.
* See also man libev(3): "ev_prepare" and "ev_check" - customise your event loop
xcb_key_symbols_free(keysyms);
keysyms = xcb_key_symbols_alloc(conn);
- xcb_get_numlock_mask(conn);
+ xcb_numlock_mask = aio_get_mod_mask_for(XCB_NUM_LOCK, keysyms);
ungrab_all_keys(conn);
DLOG("Re-grabbing...\n");
*
*/
static void i3_exit() {
+/* We need ev >= 4 for the following code. Since it is not *that* important (it
+ * only makes sure that there are no i3-nagbar instances left behind) we still
+ * support old systems with libev 3. */
+#if EV_VERSION_MAJOR >= 4
ev_loop_destroy(main_loop);
+#endif
}
int main(int argc, char *argv[]) {
- //parse_cmd("[ foo ] attach, attach ; focus");
- int screens;
char *override_configpath = NULL;
bool autostart = true;
char *layout_path = NULL;
bool delete_layout_path = false;
- bool only_check_config = false;
bool force_xinerama = false;
bool disable_signalhandler = false;
static struct option long_options[] = {
{"layout", required_argument, 0, 'L'},
{"restart", required_argument, 0, 0},
{"force-xinerama", no_argument, 0, 0},
+ {"force_xinerama", no_argument, 0, 0},
{"disable-signalhandler", no_argument, 0, 0},
+ {"get-socketpath", no_argument, 0, 0},
+ {"get_socketpath", no_argument, 0, 0},
{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();
start_argv = argv;
/* 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) {
+ 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 "
} 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 = socket_path_from_x11();
+ if (socket_path) {
+ printf("%s\n", socket_path);
+ return 0;
+ }
+
+ return 1;
} else if (strcmp(long_options[option_index].name, "restart") == 0) {
FREE(layout_path);
layout_path = sstrdup(optarg);
default:
fprintf(stderr, "Usage: %s [-c configfile] [-d loglevel] [-a] [-v] [-V] [-C]\n", argv[0]);
fprintf(stderr, "\n");
- fprintf(stderr, "-a: disable autostart\n");
- fprintf(stderr, "-L <layoutfile>: load the layout from <layoutfile>\n");
- fprintf(stderr, "-v: display version and exit\n");
- fprintf(stderr, "-V: enable verbose mode\n");
- fprintf(stderr, "-d <loglevel>: enable debug loglevel <loglevel>\n");
- fprintf(stderr, "-c <configfile>: use the provided configfile instead\n");
- fprintf(stderr, "-C: check configuration file and exit\n");
- fprintf(stderr, "--force-xinerama: Use Xinerama instead of RandR. This "
- "option should only be used if you are stuck with the "
- "nvidia closed source driver which does not support RandR.\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 <level> enable debug output with the specified loglevel\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"
+ "\tnvidia closed source driver which does not 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, "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(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++;
+ }
+ LOG("Command is: %s (%d bytes)\n", payload, strlen(payload));
+ char *socket_path = socket_path_from_x11();
+ 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);
+ 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), I3_IPC_MESSAGE_TYPE_COMMAND,
+ (uint8_t*)payload) == -1)
+ err(EXIT_FAILURE, "IPC: write()");
+
+ uint32_t reply_length;
+ uint8_t *reply;
+ int ret;
+ if ((ret = ipc_recv_message(sockfd, I3_IPC_MESSAGE_TYPE_COMMAND,
+ &reply_length, &reply)) != 0) {
+ if (ret == -1)
+ err(EXIT_FAILURE, "IPC: read()");
+ return 1;
+ }
+ printf("%.*s\n", reply_length, reply);
+ return 0;
+ }
+
+ /* I3_VERSION contains either something like this:
+ * "4.0.2 (2011-11-11, branch "release")".
+ * or: "4.0.2-123-gCOFFEEBABE (2011-11-11, branch "next")".
+ *
+ * So we check for the offset of the first opening round bracket to
+ * determine whether this is a git version or a release version. */
+ if ((strchr(I3_VERSION, '(') - I3_VERSION) > 10) {
+ struct rlimit limit = { RLIM_INFINITY, RLIM_INFINITY };
+ setrlimit(RLIMIT_CORE, &limit);
+
+ /* The following code is helpful, but not required. We thus don’t pay
+ * much attention to error handling, non-linux or other edge cases. */
+ char cwd[PATH_MAX];
+ LOG("CORE DUMPS: You are running a development version of i3, so coredumps were automatically enabled (ulimit -c unlimited).\n");
+ if (getcwd(cwd, sizeof(cwd)) != NULL)
+ LOG("CORE DUMPS: Your current working directory is \"%s\".\n", cwd);
+ int patternfd;
+ if ((patternfd = open("/proc/sys/kernel/core_pattern", O_RDONLY)) >= 0) {
+ memset(cwd, '\0', sizeof(cwd));
+ if (read(patternfd, cwd, sizeof(cwd)) > 0)
+ /* a trailing newline is included in cwd */
+ LOG("CORE DUMPS: Your core_pattern is: %s", cwd);
+ close(patternfd);
+ }
+ }
+
LOG("i3 (tree) version " I3_VERSION " starting\n");
- conn = xcb_connect(NULL, &screens);
+ conn = xcb_connect(NULL, &conn_screen);
if (xcb_connection_has_error(conn))
errx(EXIT_FAILURE, "Cannot open display\n");
+ sndisplay = sn_xcb_display_new(conn, NULL, NULL);
+
/* Initialize the libev event loop. This needs to be done before loading
* the config file because the parser will install an ev_child watcher
* for the nagbar when config errors are found. */
if (main_loop == NULL)
die("Could not initialize libev. Bad LIBEV_FLAGS?\n");
- root_screen = xcb_aux_get_screen(conn, screens);
+ root_screen = xcb_aux_get_screen(conn, conn_screen);
root = root_screen->root;
root_depth = root_screen->root_depth;
xcb_get_geometry_cookie_t gcookie = xcb_get_geometry(conn, root);
/* Set a cursor for the root window (otherwise the root window will show no
cursor until the first client is launched). */
- if (xcursor_supported) {
- xcursor_set_root_cursor();
- } else {
- xcb_cursor_t cursor_id = xcb_generate_id(conn);
- i3Font cursor_font = load_font("cursor", false);
- int xcb_cursor = xcursor_get_xcb_cursor(XCURSOR_CURSOR_POINTER);
- xcb_create_glyph_cursor(conn, cursor_id, cursor_font.id, cursor_font.id,
- xcb_cursor, xcb_cursor + 1, 0, 0, 0, 65535, 65535, 65535);
- xcb_change_window_attributes(conn, root, XCB_CW_CURSOR, &cursor_id);
- xcb_free_cursor(conn, cursor_id);
- }
+ if (xcursor_supported)
+ xcursor_set_root_cursor(XCURSOR_CURSOR_POINTER);
+ else xcb_set_root_cursor(XCURSOR_CURSOR_POINTER);
if (xkb_supported) {
int errBase,
keysyms = xcb_key_symbols_alloc(conn);
- xcb_get_numlock_mask(conn);
+ xcb_numlock_mask = aio_get_mod_mask_for(XCB_NUM_LOCK, keysyms);
translate_keysyms();
grab_all_keys(conn, false);
free(greply);
- 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 */
+ if (force_xinerama || config.force_xinerama) {
xinerama_init();
} else {
DLOG("Checking for XRandR...\n");
ev_io_start(main_loop, ipc_io);
}
- /* Also handle the UNIX domain sockets passed via socket activation */
+ /* 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. */
int fds = sd_listen_fds(1);
if (fds < 0)
ELOG("socket activation: Error in sd_listen_fds\n");
struct Autostart *exec;
TAILQ_FOREACH(exec, &autostarts, autostarts) {
LOG("auto-starting %s\n", exec->command);
- start_application(exec->command);
+ start_application(exec->command, exec->no_startup_id);
}
}
struct Autostart *exec_always;
TAILQ_FOREACH(exec_always, &autostarts_always, autostarts_always) {
LOG("auto-starting (always!) %s\n", exec_always->command);
- start_application(exec_always->command);
+ start_application(exec_always->command, exec_always->no_startup_id);
+ }
+
+ /* Start i3bar processes for all configured bars */
+ Barconfig *barconfig;
+ TAILQ_FOREACH(barconfig, &barconfigs, configs) {
+ char *command = NULL;
+ sasprintf(&command, "%s --bar_id=%s --socket=\"%s\"",
+ barconfig->i3bar_command ? barconfig->i3bar_command : "i3bar",
+ barconfig->id, current_socketpath);
+ LOG("Starting bar process: %s\n", command);
+ start_application(command, true);
+ free(command);
}
/* Make sure to destroy the event loop to invoke the cleeanup callbacks
projects / i3 / i3 / blobdiff