1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include <stdio.h> 18 #include <stdlib.h> 19 #include <string.h> 20 #include <unistd.h> 21 #include <fcntl.h> 22 #include <ctype.h> 23 #include <signal.h> 24 #include <sys/wait.h> 25 #include <sys/mount.h> 26 #include <sys/stat.h> 27 #include <sys/poll.h> 28 #include <errno.h> 29 #include <stdarg.h> 30 #include <mtd/mtd-user.h> 31 #include <sys/types.h> 32 #include <sys/socket.h> 33 #include <sys/un.h> 34 #include <libgen.h> 35 36 #include <cutils/list.h> 37 #include <cutils/sockets.h> 38 #include <cutils/iosched_policy.h> 39 #include <private/android_filesystem_config.h> 40 #include <termios.h> 41 42 #include <sys/system_properties.h> 43 44 #include "devices.h" 45 #include "init.h" 46 #include "log.h" 47 #include "property_service.h" 48 #include "bootchart.h" 49 #include "signal_handler.h" 50 #include "keychords.h" 51 #include "init_parser.h" 52 #include "util.h" 53 #include "ueventd.h" 54 55 static int property_triggers_enabled = 0; 56 57 #if BOOTCHART 58 static int bootchart_count; 59 #endif 60 61 static char console[32]; 62 static char serialno[32]; 63 static char bootmode[32]; 64 static char baseband[32]; 65 static char carrier[32]; 66 static char bootloader[32]; 67 static char hardware[32]; 68 static unsigned revision = 0; 69 static char qemu[32]; 70 71 static struct action *cur_action = NULL; 72 static struct command *cur_command = NULL; 73 static struct listnode *command_queue = NULL; 74 75 void notify_service_state(const char *name, const char *state) 76 { 77 char pname[PROP_NAME_MAX]; 78 int len = strlen(name); 79 if ((len + 10) > PROP_NAME_MAX) 80 return; 81 snprintf(pname, sizeof(pname), "init.svc.%s", name); 82 property_set(pname, state); 83 } 84 85 static int have_console; 86 static char *console_name = "/dev/console"; 87 static time_t process_needs_restart; 88 89 static const char *ENV[32]; 90 91 /* add_environment - add "key=value" to the current environment */ 92 int add_environment(const char *key, const char *val) 93 { 94 int n; 95 96 for (n = 0; n < 31; n++) { 97 if (!ENV[n]) { 98 size_t len = strlen(key) + strlen(val) + 2; 99 char *entry = malloc(len); 100 snprintf(entry, len, "%s=%s", key, val); 101 ENV[n] = entry; 102 return 0; 103 } 104 } 105 106 return 1; 107 } 108 109 static void zap_stdio(void) 110 { 111 int fd; 112 fd = open("/dev/null", O_RDWR); 113 dup2(fd, 0); 114 dup2(fd, 1); 115 dup2(fd, 2); 116 close(fd); 117 } 118 119 static void open_console() 120 { 121 int fd; 122 if ((fd = open(console_name, O_RDWR)) < 0) { 123 fd = open("/dev/null", O_RDWR); 124 } 125 dup2(fd, 0); 126 dup2(fd, 1); 127 dup2(fd, 2); 128 close(fd); 129 } 130 131 static void publish_socket(const char *name, int fd) 132 { 133 char key[64] = ANDROID_SOCKET_ENV_PREFIX; 134 char val[64]; 135 136 strlcpy(key + sizeof(ANDROID_SOCKET_ENV_PREFIX) - 1, 137 name, 138 sizeof(key) - sizeof(ANDROID_SOCKET_ENV_PREFIX)); 139 snprintf(val, sizeof(val), "%d", fd); 140 add_environment(key, val); 141 142 /* make sure we don't close-on-exec */ 143 fcntl(fd, F_SETFD, 0); 144 } 145 146 void service_start(struct service *svc, const char *dynamic_args) 147 { 148 struct stat s; 149 pid_t pid; 150 int needs_console; 151 int n; 152 153 /* starting a service removes it from the disabled or reset 154 * state and immediately takes it out of the restarting 155 * state if it was in there 156 */ 157 svc->flags &= (~(SVC_DISABLED|SVC_RESTARTING|SVC_RESET)); 158 svc->time_started = 0; 159 160 /* running processes require no additional work -- if 161 * they're in the process of exiting, we've ensured 162 * that they will immediately restart on exit, unless 163 * they are ONESHOT 164 */ 165 if (svc->flags & SVC_RUNNING) { 166 return; 167 } 168 169 needs_console = (svc->flags & SVC_CONSOLE) ? 1 : 0; 170 if (needs_console && (!have_console)) { 171 ERROR("service '%s' requires console\n", svc->name); 172 svc->flags |= SVC_DISABLED; 173 return; 174 } 175 176 if (stat(svc->args[0], &s) != 0) { 177 ERROR("cannot find '%s', disabling '%s'\n", svc->args[0], svc->name); 178 svc->flags |= SVC_DISABLED; 179 return; 180 } 181 182 if ((!(svc->flags & SVC_ONESHOT)) && dynamic_args) { 183 ERROR("service '%s' must be one-shot to use dynamic args, disabling\n", 184 svc->args[0]); 185 svc->flags |= SVC_DISABLED; 186 return; 187 } 188 189 NOTICE("starting '%s'\n", svc->name); 190 191 pid = fork(); 192 193 if (pid == 0) { 194 struct socketinfo *si; 195 struct svcenvinfo *ei; 196 char tmp[32]; 197 int fd, sz; 198 199 if (properties_inited()) { 200 get_property_workspace(&fd, &sz); 201 sprintf(tmp, "%d,%d", dup(fd), sz); 202 add_environment("ANDROID_PROPERTY_WORKSPACE", tmp); 203 } 204 205 for (ei = svc->envvars; ei; ei = ei->next) 206 add_environment(ei->name, ei->value); 207 208 for (si = svc->sockets; si; si = si->next) { 209 int socket_type = ( 210 !strcmp(si->type, "stream") ? SOCK_STREAM : 211 (!strcmp(si->type, "dgram") ? SOCK_DGRAM : SOCK_SEQPACKET)); 212 int s = create_socket(si->name, socket_type, 213 si->perm, si->uid, si->gid); 214 if (s >= 0) { 215 publish_socket(si->name, s); 216 } 217 } 218 219 if (svc->ioprio_class != IoSchedClass_NONE) { 220 if (android_set_ioprio(getpid(), svc->ioprio_class, svc->ioprio_pri)) { 221 ERROR("Failed to set pid %d ioprio = %d,%d: %s\n", 222 getpid(), svc->ioprio_class, svc->ioprio_pri, strerror(errno)); 223 } 224 } 225 226 if (needs_console) { 227 setsid(); 228 open_console(); 229 } else { 230 zap_stdio(); 231 } 232 233 #if 0 234 for (n = 0; svc->args[n]; n++) { 235 INFO("args[%d] = '%s'\n", n, svc->args[n]); 236 } 237 for (n = 0; ENV[n]; n++) { 238 INFO("env[%d] = '%s'\n", n, ENV[n]); 239 } 240 #endif 241 242 setpgid(0, getpid()); 243 244 /* as requested, set our gid, supplemental gids, and uid */ 245 if (svc->gid) { 246 if (setgid(svc->gid) != 0) { 247 ERROR("setgid failed: %s\n", strerror(errno)); 248 _exit(127); 249 } 250 } 251 if (svc->nr_supp_gids) { 252 if (setgroups(svc->nr_supp_gids, svc->supp_gids) != 0) { 253 ERROR("setgroups failed: %s\n", strerror(errno)); 254 _exit(127); 255 } 256 } 257 if (svc->uid) { 258 if (setuid(svc->uid) != 0) { 259 ERROR("setuid failed: %s\n", strerror(errno)); 260 _exit(127); 261 } 262 } 263 264 if (!dynamic_args) { 265 if (execve(svc->args[0], (char**) svc->args, (char**) ENV) < 0) { 266 ERROR("cannot execve('%s'): %s\n", svc->args[0], strerror(errno)); 267 } 268 } else { 269 char *arg_ptrs[INIT_PARSER_MAXARGS+1]; 270 int arg_idx = svc->nargs; 271 char *tmp = strdup(dynamic_args); 272 char *next = tmp; 273 char *bword; 274 275 /* Copy the static arguments */ 276 memcpy(arg_ptrs, svc->args, (svc->nargs * sizeof(char *))); 277 278 while((bword = strsep(&next, " "))) { 279 arg_ptrs[arg_idx++] = bword; 280 if (arg_idx == INIT_PARSER_MAXARGS) 281 break; 282 } 283 arg_ptrs[arg_idx] = '\0'; 284 execve(svc->args[0], (char**) arg_ptrs, (char**) ENV); 285 } 286 _exit(127); 287 } 288 289 if (pid < 0) { 290 ERROR("failed to start '%s'\n", svc->name); 291 svc->pid = 0; 292 return; 293 } 294 295 svc->time_started = gettime(); 296 svc->pid = pid; 297 svc->flags |= SVC_RUNNING; 298 299 if (properties_inited()) 300 notify_service_state(svc->name, "running"); 301 } 302 303 /* The how field should be either SVC_DISABLED or SVC_RESET */ 304 static void service_stop_or_reset(struct service *svc, int how) 305 { 306 /* we are no longer running, nor should we 307 * attempt to restart 308 */ 309 svc->flags &= (~(SVC_RUNNING|SVC_RESTARTING)); 310 311 if ((how != SVC_DISABLED) && (how != SVC_RESET)) { 312 /* Hrm, an illegal flag. Default to SVC_DISABLED */ 313 how = SVC_DISABLED; 314 } 315 /* if the service has not yet started, prevent 316 * it from auto-starting with its class 317 */ 318 if (how == SVC_RESET) { 319 svc->flags |= (svc->flags & SVC_RC_DISABLED) ? SVC_DISABLED : SVC_RESET; 320 } else { 321 svc->flags |= how; 322 } 323 324 if (svc->pid) { 325 NOTICE("service '%s' is being killed\n", svc->name); 326 kill(-svc->pid, SIGKILL); 327 notify_service_state(svc->name, "stopping"); 328 } else { 329 notify_service_state(svc->name, "stopped"); 330 } 331 } 332 333 void service_reset(struct service *svc) 334 { 335 service_stop_or_reset(svc, SVC_RESET); 336 } 337 338 void service_stop(struct service *svc) 339 { 340 service_stop_or_reset(svc, SVC_DISABLED); 341 } 342 343 void property_changed(const char *name, const char *value) 344 { 345 if (property_triggers_enabled) 346 queue_property_triggers(name, value); 347 } 348 349 static void restart_service_if_needed(struct service *svc) 350 { 351 time_t next_start_time = svc->time_started + 5; 352 353 if (next_start_time <= gettime()) { 354 svc->flags &= (~SVC_RESTARTING); 355 service_start(svc, NULL); 356 return; 357 } 358 359 if ((next_start_time < process_needs_restart) || 360 (process_needs_restart == 0)) { 361 process_needs_restart = next_start_time; 362 } 363 } 364 365 static void restart_processes() 366 { 367 process_needs_restart = 0; 368 service_for_each_flags(SVC_RESTARTING, 369 restart_service_if_needed); 370 } 371 372 static void msg_start(const char *name) 373 { 374 struct service *svc; 375 char *tmp = NULL; 376 char *args = NULL; 377 378 if (!strchr(name, ':')) 379 svc = service_find_by_name(name); 380 else { 381 tmp = strdup(name); 382 args = strchr(tmp, ':'); 383 *args = '\0'; 384 args++; 385 386 svc = service_find_by_name(tmp); 387 } 388 389 if (svc) { 390 service_start(svc, args); 391 } else { 392 ERROR("no such service '%s'\n", name); 393 } 394 if (tmp) 395 free(tmp); 396 } 397 398 static void msg_stop(const char *name) 399 { 400 struct service *svc = service_find_by_name(name); 401 402 if (svc) { 403 service_stop(svc); 404 } else { 405 ERROR("no such service '%s'\n", name); 406 } 407 } 408 409 void handle_control_message(const char *msg, const char *arg) 410 { 411 if (!strcmp(msg,"start")) { 412 msg_start(arg); 413 } else if (!strcmp(msg,"stop")) { 414 msg_stop(arg); 415 } else if (!strcmp(msg,"restart")) { 416 msg_stop(arg); 417 msg_start(arg); 418 } else { 419 ERROR("unknown control msg '%s'\n", msg); 420 } 421 } 422 423 static void import_kernel_nv(char *name, int in_qemu) 424 { 425 char *value = strchr(name, '='); 426 427 if (value == 0) return; 428 *value++ = 0; 429 if (*name == 0) return; 430 431 if (!in_qemu) 432 { 433 /* on a real device, white-list the kernel options */ 434 if (!strcmp(name,"qemu")) { 435 strlcpy(qemu, value, sizeof(qemu)); 436 } else if (!strcmp(name,"androidboot.console")) { 437 strlcpy(console, value, sizeof(console)); 438 } else if (!strcmp(name,"androidboot.mode")) { 439 strlcpy(bootmode, value, sizeof(bootmode)); 440 } else if (!strcmp(name,"androidboot.serialno")) { 441 strlcpy(serialno, value, sizeof(serialno)); 442 } else if (!strcmp(name,"androidboot.baseband")) { 443 strlcpy(baseband, value, sizeof(baseband)); 444 } else if (!strcmp(name,"androidboot.carrier")) { 445 strlcpy(carrier, value, sizeof(carrier)); 446 } else if (!strcmp(name,"androidboot.bootloader")) { 447 strlcpy(bootloader, value, sizeof(bootloader)); 448 } else if (!strcmp(name,"androidboot.hardware")) { 449 strlcpy(hardware, value, sizeof(hardware)); 450 } 451 } else { 452 /* in the emulator, export any kernel option with the 453 * ro.kernel. prefix */ 454 char buff[32]; 455 int len = snprintf( buff, sizeof(buff), "ro.kernel.%s", name ); 456 if (len < (int)sizeof(buff)) { 457 property_set( buff, value ); 458 } 459 } 460 } 461 462 static struct command *get_first_command(struct action *act) 463 { 464 struct listnode *node; 465 node = list_head(&act->commands); 466 if (!node || list_empty(&act->commands)) 467 return NULL; 468 469 return node_to_item(node, struct command, clist); 470 } 471 472 static struct command *get_next_command(struct action *act, struct command *cmd) 473 { 474 struct listnode *node; 475 node = cmd->clist.next; 476 if (!node) 477 return NULL; 478 if (node == &act->commands) 479 return NULL; 480 481 return node_to_item(node, struct command, clist); 482 } 483 484 static int is_last_command(struct action *act, struct command *cmd) 485 { 486 return (list_tail(&act->commands) == &cmd->clist); 487 } 488 489 void execute_one_command(void) 490 { 491 int ret; 492 493 if (!cur_action || !cur_command || is_last_command(cur_action, cur_command)) { 494 cur_action = action_remove_queue_head(); 495 cur_command = NULL; 496 if (!cur_action) 497 return; 498 INFO("processing action %p (%s)\n", cur_action, cur_action->name); 499 cur_command = get_first_command(cur_action); 500 } else { 501 cur_command = get_next_command(cur_action, cur_command); 502 } 503 504 if (!cur_command) 505 return; 506 507 ret = cur_command->func(cur_command->nargs, cur_command->args); 508 INFO("command '%s' r=%d\n", cur_command->args[0], ret); 509 } 510 511 static int wait_for_coldboot_done_action(int nargs, char **args) 512 { 513 int ret; 514 INFO("wait for %s\n", coldboot_done); 515 ret = wait_for_file(coldboot_done, COMMAND_RETRY_TIMEOUT); 516 if (ret) 517 ERROR("Timed out waiting for %s\n", coldboot_done); 518 return ret; 519 } 520 521 static int property_init_action(int nargs, char **args) 522 { 523 bool load_defaults = true; 524 525 INFO("property init\n"); 526 if (!strcmp(bootmode, "charger")) 527 load_defaults = false; 528 property_init(load_defaults); 529 return 0; 530 } 531 532 static int keychord_init_action(int nargs, char **args) 533 { 534 keychord_init(); 535 return 0; 536 } 537 538 static int console_init_action(int nargs, char **args) 539 { 540 int fd; 541 char tmp[PROP_VALUE_MAX]; 542 543 if (console[0]) { 544 snprintf(tmp, sizeof(tmp), "/dev/%s", console); 545 console_name = strdup(tmp); 546 } 547 548 fd = open(console_name, O_RDWR); 549 if (fd >= 0) 550 have_console = 1; 551 close(fd); 552 553 if( load_565rle_image(INIT_IMAGE_FILE) ) { 554 fd = open("/dev/tty0", O_WRONLY); 555 if (fd >= 0) { 556 const char *msg; 557 msg = "\n" 558 "\n" 559 "\n" 560 "\n" 561 "\n" 562 "\n" 563 "\n" // console is 40 cols x 30 lines 564 "\n" 565 "\n" 566 "\n" 567 "\n" 568 "\n" 569 "\n" 570 "\n" 571 " A N D R O I D "; 572 write(fd, msg, strlen(msg)); 573 close(fd); 574 } 575 } 576 return 0; 577 } 578 579 static int set_init_properties_action(int nargs, char **args) 580 { 581 char tmp[PROP_VALUE_MAX]; 582 583 if (qemu[0]) 584 import_kernel_cmdline(1, import_kernel_nv); 585 586 if (!strcmp(bootmode,"factory")) 587 property_set("ro.factorytest", "1"); 588 else if (!strcmp(bootmode,"factory2")) 589 property_set("ro.factorytest", "2"); 590 else 591 property_set("ro.factorytest", "0"); 592 593 property_set("ro.serialno", serialno[0] ? serialno : ""); 594 property_set("ro.bootmode", bootmode[0] ? bootmode : "unknown"); 595 property_set("ro.baseband", baseband[0] ? baseband : "unknown"); 596 property_set("ro.carrier", carrier[0] ? carrier : "unknown"); 597 property_set("ro.bootloader", bootloader[0] ? bootloader : "unknown"); 598 599 property_set("ro.hardware", hardware); 600 snprintf(tmp, PROP_VALUE_MAX, "%d", revision); 601 property_set("ro.revision", tmp); 602 return 0; 603 } 604 605 static int property_service_init_action(int nargs, char **args) 606 { 607 /* read any property files on system or data and 608 * fire up the property service. This must happen 609 * after the ro.foo properties are set above so 610 * that /data/local.prop cannot interfere with them. 611 */ 612 start_property_service(); 613 return 0; 614 } 615 616 static int signal_init_action(int nargs, char **args) 617 { 618 signal_init(); 619 return 0; 620 } 621 622 static int check_startup_action(int nargs, char **args) 623 { 624 /* make sure we actually have all the pieces we need */ 625 if ((get_property_set_fd() < 0) || 626 (get_signal_fd() < 0)) { 627 ERROR("init startup failure\n"); 628 exit(1); 629 } 630 631 /* signal that we hit this point */ 632 unlink("/dev/.booting"); 633 634 return 0; 635 } 636 637 static int queue_property_triggers_action(int nargs, char **args) 638 { 639 queue_all_property_triggers(); 640 /* enable property triggers */ 641 property_triggers_enabled = 1; 642 return 0; 643 } 644 645 #if BOOTCHART 646 static int bootchart_init_action(int nargs, char **args) 647 { 648 bootchart_count = bootchart_init(); 649 if (bootchart_count < 0) { 650 ERROR("bootcharting init failure\n"); 651 } else if (bootchart_count > 0) { 652 NOTICE("bootcharting started (period=%d ms)\n", bootchart_count*BOOTCHART_POLLING_MS); 653 } else { 654 NOTICE("bootcharting ignored\n"); 655 } 656 657 return 0; 658 } 659 #endif 660 661 int main(int argc, char **argv) 662 { 663 int fd_count = 0; 664 struct pollfd ufds[4]; 665 char *tmpdev; 666 char* debuggable; 667 char tmp[32]; 668 int property_set_fd_init = 0; 669 int signal_fd_init = 0; 670 int keychord_fd_init = 0; 671 672 if (!strcmp(basename(argv[0]), "ueventd")) 673 return ueventd_main(argc, argv); 674 675 /* clear the umask */ 676 umask(0); 677 678 /* Get the basic filesystem setup we need put 679 * together in the initramdisk on / and then we'll 680 * let the rc file figure out the rest. 681 */ 682 mkdir("/dev", 0755); 683 mkdir("/proc", 0755); 684 mkdir("/sys", 0755); 685 686 mount("tmpfs", "/dev", "tmpfs", MS_NOSUID, "mode=0755"); 687 mkdir("/dev/pts", 0755); 688 mkdir("/dev/socket", 0755); 689 mount("devpts", "/dev/pts", "devpts", 0, NULL); 690 mount("proc", "/proc", "proc", 0, NULL); 691 mount("sysfs", "/sys", "sysfs", 0, NULL); 692 693 /* indicate that booting is in progress to background fw loaders, etc */ 694 close(open("/dev/.booting", O_WRONLY | O_CREAT, 0000)); 695 696 /* We must have some place other than / to create the 697 * device nodes for kmsg and null, otherwise we won't 698 * be able to remount / read-only later on. 699 * Now that tmpfs is mounted on /dev, we can actually 700 * talk to the outside world. 701 */ 702 open_devnull_stdio(); 703 klog_init(); 704 705 INFO("reading config file\n"); 706 init_parse_config_file("/init.rc"); 707 708 /* pull the kernel commandline and ramdisk properties file in */ 709 import_kernel_cmdline(0, import_kernel_nv); 710 /* don't expose the raw commandline to nonpriv processes */ 711 chmod("/proc/cmdline", 0440); 712 get_hardware_name(hardware, &revision); 713 snprintf(tmp, sizeof(tmp), "/init.%s.rc", hardware); 714 init_parse_config_file(tmp); 715 716 action_for_each_trigger("early-init", action_add_queue_tail); 717 718 queue_builtin_action(wait_for_coldboot_done_action, "wait_for_coldboot_done"); 719 queue_builtin_action(property_init_action, "property_init"); 720 queue_builtin_action(keychord_init_action, "keychord_init"); 721 queue_builtin_action(console_init_action, "console_init"); 722 queue_builtin_action(set_init_properties_action, "set_init_properties"); 723 724 /* execute all the boot actions to get us started */ 725 action_for_each_trigger("init", action_add_queue_tail); 726 727 /* skip mounting filesystems in charger mode */ 728 if (strcmp(bootmode, "charger") != 0) { 729 action_for_each_trigger("early-fs", action_add_queue_tail); 730 action_for_each_trigger("fs", action_add_queue_tail); 731 action_for_each_trigger("post-fs", action_add_queue_tail); 732 action_for_each_trigger("post-fs-data", action_add_queue_tail); 733 } 734 735 queue_builtin_action(property_service_init_action, "property_service_init"); 736 queue_builtin_action(signal_init_action, "signal_init"); 737 queue_builtin_action(check_startup_action, "check_startup"); 738 739 if (!strcmp(bootmode, "charger")) { 740 action_for_each_trigger("charger", action_add_queue_tail); 741 } else { 742 action_for_each_trigger("early-boot", action_add_queue_tail); 743 action_for_each_trigger("boot", action_add_queue_tail); 744 } 745 746 /* run all property triggers based on current state of the properties */ 747 queue_builtin_action(queue_property_triggers_action, "queue_propety_triggers"); 748 749 750 #if BOOTCHART 751 queue_builtin_action(bootchart_init_action, "bootchart_init"); 752 #endif 753 754 for(;;) { 755 int nr, i, timeout = -1; 756 757 execute_one_command(); 758 restart_processes(); 759 760 if (!property_set_fd_init && get_property_set_fd() > 0) { 761 ufds[fd_count].fd = get_property_set_fd(); 762 ufds[fd_count].events = POLLIN; 763 ufds[fd_count].revents = 0; 764 fd_count++; 765 property_set_fd_init = 1; 766 } 767 if (!signal_fd_init && get_signal_fd() > 0) { 768 ufds[fd_count].fd = get_signal_fd(); 769 ufds[fd_count].events = POLLIN; 770 ufds[fd_count].revents = 0; 771 fd_count++; 772 signal_fd_init = 1; 773 } 774 if (!keychord_fd_init && get_keychord_fd() > 0) { 775 ufds[fd_count].fd = get_keychord_fd(); 776 ufds[fd_count].events = POLLIN; 777 ufds[fd_count].revents = 0; 778 fd_count++; 779 keychord_fd_init = 1; 780 } 781 782 if (process_needs_restart) { 783 timeout = (process_needs_restart - gettime()) * 1000; 784 if (timeout < 0) 785 timeout = 0; 786 } 787 788 if (!action_queue_empty() || cur_action) 789 timeout = 0; 790 791 #if BOOTCHART 792 if (bootchart_count > 0) { 793 if (timeout < 0 || timeout > BOOTCHART_POLLING_MS) 794 timeout = BOOTCHART_POLLING_MS; 795 if (bootchart_step() < 0 || --bootchart_count == 0) { 796 bootchart_finish(); 797 bootchart_count = 0; 798 } 799 } 800 #endif 801 802 nr = poll(ufds, fd_count, timeout); 803 if (nr <= 0) 804 continue; 805 806 for (i = 0; i < fd_count; i++) { 807 if (ufds[i].revents == POLLIN) { 808 if (ufds[i].fd == get_property_set_fd()) 809 handle_property_set_fd(); 810 else if (ufds[i].fd == get_keychord_fd()) 811 handle_keychord(); 812 else if (ufds[i].fd == get_signal_fd()) 813 handle_signal(); 814 } 815 } 816 } 817 818 return 0; 819 } 820
