int main(int argc, char **argv){ int fd_count = 0; struct pollfd ufds[4]; char *tmpdev; char* debuggable; char tmp[32]; int property_set_fd_init = 0; int signal_fd_init = 0; int keychord_fd_init = 0; bool is_charger = false; if (!strcmp(basename(argv[0]), "ueventd")) return ueventd_main(argc, argv); if (!strcmp(basename(argv[0]), "watchdogd")) return watchdogd_main(argc, argv); /* clear the umask */ umask(0); /* Get the basic filesystem setup we need put * together in the initramdisk on / and then we'll * let the rc file figure out the rest. */ mkdir("/dev", 0755); mkdir("/proc", 0755); mkdir("/sys", 0755); mount("tmpfs", "/dev", "tmpfs", MS_NOSUID, "mode=0755"); mkdir("/dev/pts", 0755); mkdir("/dev/socket", 0755); mount("devpts", "/dev/pts", "devpts", 0, NULL); mount("proc", "/proc", "proc", 0, NULL); mount("sysfs", "/sys", "sysfs", 0, NULL); /* indicate that booting is in progress to background fw loaders, etc */ close(open("/dev/.booting", O_WRONLY | O_CREAT, 0000)); /* We must have some place other than / to create the * device nodes for kmsg and null, otherwise we won't * be able to remount / read-only later on. * Now that tmpfs is mounted on /dev, we can actually * talk to the outside world. */ open_devnull_stdio(); klog_init(); property_init(); get_hardware_name(hardware, &revision); process_kernel_cmdline();#ifdef HAVE_SELINUX union selinux_callback cb; cb.func_log = klog_write; selinux_set_callback(SELINUX_CB_LOG, cb); cb.func_audit = audit_callback; selinux_set_callback(SELINUX_CB_AUDIT, cb); INFO("loading selinux policy\n"); if (selinux_enabled) { if (selinux_android_load_policy() < 0) { selinux_enabled = 0; INFO("SELinux: Disabled due to failed policy load\n"); } else { selinux_init_all_handles(); } } else { INFO("SELinux: Disabled by command line option\n"); } /* These directories were necessarily created before initial policy load * and therefore need their security context restored to the proper value. * This must happen before /dev is populated by ueventd. */ restorecon("/dev"); restorecon("/dev/socket");#endif is_charger = !strcmp(bootmode, "charger"); INFO("property init\n"); if (!is_charger) property_load_boot_defaults(); INFO("reading config file\n"); init_parse_config_file("/init.rc"); action_for_each_trigger("early-init", action_add_queue_tail); queue_builtin_action(wait_for_coldboot_done_action, "wait_for_coldboot_done"); queue_builtin_action(keychord_init_action, "keychord_init"); queue_builtin_action(console_init_action, "console_init"); /* execute all the boot actions to get us started */ action_for_each_trigger("init", action_add_queue_tail); /* skip mounting filesystems in charger mode */ if (!is_charger) { action_for_each_trigger("early-fs", action_add_queue_tail); action_for_each_trigger("fs", action_add_queue_tail); action_for_each_trigger("post-fs", action_add_queue_tail); action_for_each_trigger("post-fs-data", action_add_queue_tail); } queue_builtin_action(property_service_init_action, "property_service_init"); queue_builtin_action(signal_init_action, "signal_init"); queue_builtin_action(check_startup_action, "check_startup"); if (is_charger) { action_for_each_trigger("charger", action_add_queue_tail); } else { action_for_each_trigger("early-boot", action_add_queue_tail); action_for_each_trigger("boot", action_add_queue_tail); } /* run all property triggers based on current state of the properties */ queue_builtin_action(queue_property_triggers_action, "queue_property_triggers");#if BOOTCHART queue_builtin_action(bootchart_init_action, "bootchart_init");#endif for(;;) { int nr, i, timeout = -1; execute_one_command(); restart_processes(); if (!property_set_fd_init && get_property_set_fd() > 0) { ufds[fd_count].fd = get_property_set_fd(); ufds[fd_count].events = POLLIN; ufds[fd_count].revents = 0; fd_count++; property_set_fd_init = 1; } if (!signal_fd_init && get_signal_fd() > 0) { ufds[fd_count].fd = get_signal_fd(); ufds[fd_count].events = POLLIN; ufds[fd_count].revents = 0; fd_count++; signal_fd_init = 1; } if (!keychord_fd_init && get_keychord_fd() > 0) { ufds[fd_count].fd = get_keychord_fd(); ufds[fd_count].events = POLLIN; ufds[fd_count].revents = 0; fd_count++; keychord_fd_init = 1; } if (process_needs_restart) { timeout = (process_needs_restart - gettime()) * 1000; if (timeout < 0) timeout = 0; } if (!action_queue_empty() || cur_action) timeout = 0;#if BOOTCHART if (bootchart_count > 0) { if (timeout < 0 || timeout > BOOTCHART_POLLING_MS) timeout = BOOTCHART_POLLING_MS; if (bootchart_step() < 0 || --bootchart_count == 0) { bootchart_finish(); bootchart_count = 0; } }#endif nr = poll(ufds, fd_count, timeout); if (nr <= 0) continue; for (i = 0; i < fd_count; i++) { if (ufds[i].revents == POLLIN) { if (ufds[i].fd == get_property_set_fd()) handle_property_set_fd(); else if (ufds[i].fd == get_keychord_fd()) handle_keychord(); else if (ufds[i].fd == get_signal_fd()) handle_signal(); } } } return 0;}
