880 lines
23 KiB
C
Executable file
880 lines
23 KiB
C
Executable file
/*
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* Copyright (C) 2008 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <ctype.h>
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#include <signal.h>
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#include <sys/wait.h>
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#include <sys/mount.h>
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#include <sys/stat.h>
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#include <sys/poll.h>
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#include <time.h>
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#include <errno.h>
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#include <stdarg.h>
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#include <mtd/mtd-user.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/un.h>
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#include <sys/reboot.h>
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#include <cutils/sockets.h>
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#include <cutils/iosched_policy.h>
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#include <termios.h>
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#include <sys/system_properties.h>
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#include "devices.h"
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#include "init.h"
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#include "property_service.h"
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#include "bootchart.h"
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#include "keychords.h"
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#include "parser.h"
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static int property_triggers_enabled = 0;
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#if BOOTCHART
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static int bootchart_count;
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#endif
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static char console[32];
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static char serialno[32];
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static char bootmode[32];
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static char baseband[32];
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static char carrier[32];
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static char bootloader[32];
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static char hardware[32];
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static unsigned revision = 0;
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static char qemu[32];
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static void notify_service_state(const char *name, const char *state)
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{
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char pname[PROP_NAME_MAX];
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int len = strlen(name);
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if ((len + 10) > PROP_NAME_MAX)
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return;
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snprintf(pname, sizeof(pname), "init.svc.%s", name);
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property_set(pname, state);
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}
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static int have_console;
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static char *console_name = "/dev/console";
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static time_t process_needs_restart;
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static const char *ENV[32];
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/* add_environment - add "key=value" to the current environment */
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int add_environment(const char *key, const char *val)
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{
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int n;
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for (n = 0; n < 31; n++) {
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if (!ENV[n]) {
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size_t len = strlen(key) + strlen(val) + 2;
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char *entry = malloc(len);
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snprintf(entry, len, "%s=%s", key, val);
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ENV[n] = entry;
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return 0;
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}
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}
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return 1;
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}
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static void zap_stdio(void)
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{
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int fd;
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fd = open("/dev/null", O_RDWR);
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dup2(fd, 0);
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dup2(fd, 1);
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dup2(fd, 2);
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close(fd);
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}
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static void open_console()
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{
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int fd;
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if ((fd = open(console_name, O_RDWR)) < 0) {
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fd = open("/dev/null", O_RDWR);
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}
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dup2(fd, 0);
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dup2(fd, 1);
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dup2(fd, 2);
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close(fd);
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}
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/*
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* gettime() - returns the time in seconds of the system's monotonic clock or
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* zero on error.
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*/
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static time_t gettime(void)
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{
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struct timespec ts;
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int ret;
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ret = clock_gettime(CLOCK_MONOTONIC, &ts);
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if (ret < 0) {
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ERROR("clock_gettime(CLOCK_MONOTONIC) failed: %s\n", strerror(errno));
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return 0;
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}
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return ts.tv_sec;
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}
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static void publish_socket(const char *name, int fd)
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{
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char key[64] = ANDROID_SOCKET_ENV_PREFIX;
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char val[64];
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strlcpy(key + sizeof(ANDROID_SOCKET_ENV_PREFIX) - 1,
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name,
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sizeof(key) - sizeof(ANDROID_SOCKET_ENV_PREFIX));
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snprintf(val, sizeof(val), "%d", fd);
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add_environment(key, val);
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/* make sure we don't close-on-exec */
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fcntl(fd, F_SETFD, 0);
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}
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void service_start(struct service *svc, const char *dynamic_args)
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{
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struct stat s;
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pid_t pid;
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int needs_console;
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int n;
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/* starting a service removes it from the disabled
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* state and immediately takes it out of the restarting
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* state if it was in there
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*/
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svc->flags &= (~(SVC_DISABLED|SVC_RESTARTING));
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svc->time_started = 0;
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/* running processes require no additional work -- if
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* they're in the process of exiting, we've ensured
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* that they will immediately restart on exit, unless
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* they are ONESHOT
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*/
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if (svc->flags & SVC_RUNNING) {
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return;
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}
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needs_console = (svc->flags & SVC_CONSOLE) ? 1 : 0;
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if (needs_console && (!have_console)) {
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ERROR("service '%s' requires console\n", svc->name);
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svc->flags |= SVC_DISABLED;
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return;
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}
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if (stat(svc->args[0], &s) != 0) {
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ERROR("cannot find '%s', disabling '%s'\n", svc->args[0], svc->name);
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svc->flags |= SVC_DISABLED;
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return;
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}
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if ((!(svc->flags & SVC_ONESHOT)) && dynamic_args) {
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ERROR("service '%s' must be one-shot to use dynamic args, disabling\n",
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svc->args[0]);
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svc->flags |= SVC_DISABLED;
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return;
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}
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NOTICE("starting '%s'\n", svc->name);
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pid = fork();
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if (pid == 0) {
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struct socketinfo *si;
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struct svcenvinfo *ei;
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char tmp[32];
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int fd, sz;
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get_property_workspace(&fd, &sz);
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sprintf(tmp, "%d,%d", dup(fd), sz);
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add_environment("ANDROID_PROPERTY_WORKSPACE", tmp);
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for (ei = svc->envvars; ei; ei = ei->next)
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add_environment(ei->name, ei->value);
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for (si = svc->sockets; si; si = si->next) {
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int s = create_socket(si->name,
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!strcmp(si->type, "dgram") ?
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SOCK_DGRAM : SOCK_STREAM,
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si->perm, si->uid, si->gid);
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if (s >= 0) {
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publish_socket(si->name, s);
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}
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}
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if (svc->ioprio_class != IoSchedClass_NONE) {
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if (android_set_ioprio(getpid(), svc->ioprio_class, svc->ioprio_pri)) {
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ERROR("Failed to set pid %d ioprio = %d,%d: %s\n",
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getpid(), svc->ioprio_class, svc->ioprio_pri, strerror(errno));
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}
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}
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if (needs_console) {
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setsid();
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open_console();
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} else {
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zap_stdio();
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}
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#if 0
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for (n = 0; svc->args[n]; n++) {
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INFO("args[%d] = '%s'\n", n, svc->args[n]);
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}
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for (n = 0; ENV[n]; n++) {
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INFO("env[%d] = '%s'\n", n, ENV[n]);
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}
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#endif
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setpgid(0, getpid());
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/* as requested, set our gid, supplemental gids, and uid */
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if (svc->gid) {
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setgid(svc->gid);
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}
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if (svc->nr_supp_gids) {
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setgroups(svc->nr_supp_gids, svc->supp_gids);
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}
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if (svc->uid) {
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setuid(svc->uid);
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}
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if (!dynamic_args) {
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if (execve(svc->args[0], (char**) svc->args, (char**) ENV) < 0) {
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ERROR("cannot execve('%s'): %s\n", svc->args[0], strerror(errno));
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}
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} else {
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char *arg_ptrs[SVC_MAXARGS+1];
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int arg_idx = svc->nargs;
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char *tmp = strdup(dynamic_args);
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char *next = tmp;
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char *bword;
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/* Copy the static arguments */
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memcpy(arg_ptrs, svc->args, (svc->nargs * sizeof(char *)));
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while((bword = strsep(&next, " "))) {
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arg_ptrs[arg_idx++] = bword;
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if (arg_idx == SVC_MAXARGS)
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break;
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}
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arg_ptrs[arg_idx] = '\0';
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execve(svc->args[0], (char**) arg_ptrs, (char**) ENV);
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}
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_exit(127);
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}
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if (pid < 0) {
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ERROR("failed to start '%s'\n", svc->name);
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svc->pid = 0;
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return;
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}
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svc->time_started = gettime();
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svc->pid = pid;
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svc->flags |= SVC_RUNNING;
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notify_service_state(svc->name, "running");
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}
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void service_stop(struct service *svc)
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{
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/* we are no longer running, nor should we
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* attempt to restart
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*/
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svc->flags &= (~(SVC_RUNNING|SVC_RESTARTING));
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/* if the service has not yet started, prevent
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* it from auto-starting with its class
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*/
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svc->flags |= SVC_DISABLED;
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if (svc->pid) {
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NOTICE("service '%s' is being killed\n", svc->name);
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kill(-svc->pid, SIGTERM);
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notify_service_state(svc->name, "stopping");
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} else {
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notify_service_state(svc->name, "stopped");
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}
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}
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void property_changed(const char *name, const char *value)
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{
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if (property_triggers_enabled) {
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queue_property_triggers(name, value);
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drain_action_queue();
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}
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}
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#define CRITICAL_CRASH_THRESHOLD 4 /* if we crash >4 times ... */
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#define CRITICAL_CRASH_WINDOW (4*60) /* ... in 4 minutes, goto recovery*/
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static int wait_for_one_process(int block)
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{
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pid_t pid;
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int status;
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struct service *svc;
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struct socketinfo *si;
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time_t now;
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struct listnode *node;
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struct command *cmd;
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while ( (pid = waitpid(-1, &status, block ? 0 : WNOHANG)) == -1 && errno == EINTR );
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if (pid <= 0) return -1;
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INFO("waitpid returned pid %d, status = %08x\n", pid, status);
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svc = service_find_by_pid(pid);
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if (!svc) {
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ERROR("untracked pid %d exited\n", pid);
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return 0;
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}
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NOTICE("process '%s', pid %d exited\n", svc->name, pid);
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if (!(svc->flags & SVC_ONESHOT)) {
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kill(-pid, SIGKILL);
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NOTICE("process '%s' killing any children in process group\n", svc->name);
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}
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/* remove any sockets we may have created */
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for (si = svc->sockets; si; si = si->next) {
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char tmp[128];
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snprintf(tmp, sizeof(tmp), ANDROID_SOCKET_DIR"/%s", si->name);
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unlink(tmp);
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}
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svc->pid = 0;
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svc->flags &= (~SVC_RUNNING);
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/* oneshot processes go into the disabled state on exit */
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if (svc->flags & SVC_ONESHOT) {
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svc->flags |= SVC_DISABLED;
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}
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/* disabled processes do not get restarted automatically */
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if (svc->flags & SVC_DISABLED) {
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notify_service_state(svc->name, "stopped");
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return 0;
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}
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now = gettime();
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if (svc->flags & SVC_CRITICAL) {
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if (svc->time_crashed + CRITICAL_CRASH_WINDOW >= now) {
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if (++svc->nr_crashed > CRITICAL_CRASH_THRESHOLD) {
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ERROR("critical process '%s' exited %d times in %d minutes; "
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"rebooting into recovery mode\n", svc->name,
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CRITICAL_CRASH_THRESHOLD, CRITICAL_CRASH_WINDOW / 60);
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sync();
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__reboot(LINUX_REBOOT_MAGIC1, LINUX_REBOOT_MAGIC2,
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LINUX_REBOOT_CMD_RESTART2, "recovery");
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return 0;
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}
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} else {
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svc->time_crashed = now;
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svc->nr_crashed = 1;
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}
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}
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svc->flags |= SVC_RESTARTING;
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/* Execute all onrestart commands for this service. */
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list_for_each(node, &svc->onrestart.commands) {
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cmd = node_to_item(node, struct command, clist);
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cmd->func(cmd->nargs, cmd->args);
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}
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notify_service_state(svc->name, "restarting");
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return 0;
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}
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static void restart_service_if_needed(struct service *svc)
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{
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time_t next_start_time = svc->time_started + 5;
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if (next_start_time <= gettime()) {
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svc->flags &= (~SVC_RESTARTING);
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service_start(svc, NULL);
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return;
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}
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if ((next_start_time < process_needs_restart) ||
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(process_needs_restart == 0)) {
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process_needs_restart = next_start_time;
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}
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}
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static void restart_processes()
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{
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process_needs_restart = 0;
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service_for_each_flags(SVC_RESTARTING,
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restart_service_if_needed);
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}
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static int signal_fd = -1;
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static void sigchld_handler(int s)
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{
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write(signal_fd, &s, 1);
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}
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static void msg_start(const char *name)
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{
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struct service *svc;
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char *tmp = NULL;
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char *args = NULL;
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if (!strchr(name, ':'))
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svc = service_find_by_name(name);
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else {
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tmp = strdup(name);
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args = strchr(tmp, ':');
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*args = '\0';
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args++;
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svc = service_find_by_name(tmp);
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}
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if (svc) {
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service_start(svc, args);
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} else {
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ERROR("no such service '%s'\n", name);
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}
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if (tmp)
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free(tmp);
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}
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static void msg_stop(const char *name)
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{
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struct service *svc = service_find_by_name(name);
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if (svc) {
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service_stop(svc);
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} else {
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ERROR("no such service '%s'\n", name);
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}
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}
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void handle_control_message(const char *msg, const char *arg)
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{
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if (!strcmp(msg,"start")) {
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msg_start(arg);
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} else if (!strcmp(msg,"stop")) {
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msg_stop(arg);
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} else {
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ERROR("unknown control msg '%s'\n", msg);
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}
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}
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static void import_kernel_nv(char *name, int in_qemu)
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{
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char *value = strchr(name, '=');
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if (value == 0) return;
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*value++ = 0;
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if (*name == 0) return;
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if (!in_qemu)
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{
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/* on a real device, white-list the kernel options */
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if (!strcmp(name,"qemu")) {
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strlcpy(qemu, value, sizeof(qemu));
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} else if (!strcmp(name,"androidboot.console")) {
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strlcpy(console, value, sizeof(console));
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} else if (!strcmp(name,"androidboot.mode")) {
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strlcpy(bootmode, value, sizeof(bootmode));
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} else if (!strcmp(name,"androidboot.serialno")) {
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strlcpy(serialno, value, sizeof(serialno));
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} else if (!strcmp(name,"androidboot.baseband")) {
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strlcpy(baseband, value, sizeof(baseband));
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} else if (!strcmp(name,"androidboot.carrier")) {
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strlcpy(carrier, value, sizeof(carrier));
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} else if (!strcmp(name,"androidboot.bootloader")) {
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strlcpy(bootloader, value, sizeof(bootloader));
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} else if (!strcmp(name,"androidboot.hardware")) {
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strlcpy(hardware, value, sizeof(hardware));
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} else {
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qemu_cmdline(name, value);
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}
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} else {
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/* in the emulator, export any kernel option with the
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* ro.kernel. prefix */
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char buff[32];
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int len = snprintf( buff, sizeof(buff), "ro.kernel.%s", name );
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if (len < (int)sizeof(buff)) {
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property_set( buff, value );
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}
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}
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}
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static void import_kernel_cmdline(int in_qemu)
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{
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char cmdline[1024];
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char *ptr;
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int fd;
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fd = open("/proc/cmdline", O_RDONLY);
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if (fd >= 0) {
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int n = read(fd, cmdline, 1023);
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if (n < 0) n = 0;
|
|
|
|
/* get rid of trailing newline, it happens */
|
|
if (n > 0 && cmdline[n-1] == '\n') n--;
|
|
|
|
cmdline[n] = 0;
|
|
close(fd);
|
|
} else {
|
|
cmdline[0] = 0;
|
|
}
|
|
|
|
ptr = cmdline;
|
|
while (ptr && *ptr) {
|
|
char *x = strchr(ptr, ' ');
|
|
if (x != 0) *x++ = 0;
|
|
import_kernel_nv(ptr, in_qemu);
|
|
ptr = x;
|
|
}
|
|
|
|
/* don't expose the raw commandline to nonpriv processes */
|
|
chmod("/proc/cmdline", 0440);
|
|
}
|
|
|
|
static void get_hardware_name(void)
|
|
{
|
|
char data[1024];
|
|
int fd, n;
|
|
char *x, *hw, *rev;
|
|
|
|
/* Hardware string was provided on kernel command line */
|
|
if (hardware[0])
|
|
return;
|
|
|
|
fd = open("/proc/cpuinfo", O_RDONLY);
|
|
if (fd < 0) return;
|
|
|
|
n = read(fd, data, 1023);
|
|
close(fd);
|
|
if (n < 0) return;
|
|
|
|
data[n] = 0;
|
|
hw = strstr(data, "\nHardware");
|
|
rev = strstr(data, "\nRevision");
|
|
|
|
if (hw) {
|
|
x = strstr(hw, ": ");
|
|
if (x) {
|
|
x += 2;
|
|
n = 0;
|
|
while (*x && !isspace(*x)) {
|
|
hardware[n++] = tolower(*x);
|
|
x++;
|
|
if (n == 31) break;
|
|
}
|
|
hardware[n] = 0;
|
|
}
|
|
}
|
|
|
|
if (rev) {
|
|
x = strstr(rev, ": ");
|
|
if (x) {
|
|
revision = strtoul(x + 2, 0, 16);
|
|
}
|
|
}
|
|
}
|
|
|
|
void drain_action_queue(void)
|
|
{
|
|
struct listnode *node;
|
|
struct command *cmd;
|
|
struct action *act;
|
|
int ret;
|
|
|
|
while ((act = action_remove_queue_head())) {
|
|
INFO("processing action %p (%s)\n", act, act->name);
|
|
list_for_each(node, &act->commands) {
|
|
cmd = node_to_item(node, struct command, clist);
|
|
ret = cmd->func(cmd->nargs, cmd->args);
|
|
INFO("command '%s' r=%d\n", cmd->args[0], ret);
|
|
}
|
|
}
|
|
}
|
|
|
|
void open_devnull_stdio(void)
|
|
{
|
|
int fd;
|
|
static const char *name = "/dev/__null__";
|
|
if (mknod(name, S_IFCHR | 0600, (1 << 8) | 3) == 0) {
|
|
fd = open(name, O_RDWR);
|
|
unlink(name);
|
|
if (fd >= 0) {
|
|
dup2(fd, 0);
|
|
dup2(fd, 1);
|
|
dup2(fd, 2);
|
|
if (fd > 2) {
|
|
close(fd);
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
|
|
exit(1);
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
int signal_recv_fd = -1;
|
|
int fd_count;
|
|
int s[2];
|
|
int fd;
|
|
struct sigaction act;
|
|
char tmp[PROP_VALUE_MAX];
|
|
struct pollfd ufds[4];
|
|
char *tmpdev;
|
|
char* debuggable;
|
|
|
|
act.sa_handler = sigchld_handler;
|
|
act.sa_flags = SA_NOCLDSTOP;
|
|
act.sa_mask = 0;
|
|
act.sa_restorer = NULL;
|
|
sigaction(SIGCHLD, &act, 0);
|
|
|
|
/* 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", 0, "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);
|
|
|
|
/* 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();
|
|
log_init();
|
|
|
|
INFO("reading config file\n");
|
|
parse_config_file("/init.rc");
|
|
|
|
/* pull the kernel commandline and ramdisk properties file in */
|
|
qemu_init();
|
|
import_kernel_cmdline(0);
|
|
|
|
get_hardware_name();
|
|
snprintf(tmp, sizeof(tmp), "/init.%s.rc", hardware);
|
|
parse_config_file(tmp);
|
|
|
|
action_for_each_trigger("early-init", action_add_queue_tail);
|
|
drain_action_queue();
|
|
|
|
INFO("device init\n");
|
|
device_init();
|
|
|
|
property_init();
|
|
|
|
// only listen for keychords if ro.debuggable is true
|
|
keychord_init();
|
|
|
|
if (console[0]) {
|
|
snprintf(tmp, sizeof(tmp), "/dev/%s", console);
|
|
console_name = strdup(tmp);
|
|
}
|
|
|
|
fd = open(console_name, O_RDWR);
|
|
if (fd >= 0)
|
|
have_console = 1;
|
|
close(fd);
|
|
|
|
if( load_565rle_image(INIT_IMAGE_FILE) ) {
|
|
fd = open("/dev/tty0", O_WRONLY);
|
|
if (fd >= 0) {
|
|
const char *msg;
|
|
msg = "\n"
|
|
"\n"
|
|
"\n"
|
|
"\n"
|
|
"\n"
|
|
"\n"
|
|
"\n" // console is 40 cols x 30 lines
|
|
"\n"
|
|
"\n"
|
|
"\n"
|
|
"\n"
|
|
"\n"
|
|
"\n"
|
|
"\n"
|
|
" A N D R O I D ";
|
|
write(fd, msg, strlen(msg));
|
|
close(fd);
|
|
}
|
|
}
|
|
|
|
if (qemu[0])
|
|
import_kernel_cmdline(1);
|
|
|
|
if (!strcmp(bootmode,"factory"))
|
|
property_set("ro.factorytest", "1");
|
|
else if (!strcmp(bootmode,"factory2"))
|
|
property_set("ro.factorytest", "2");
|
|
else
|
|
property_set("ro.factorytest", "0");
|
|
|
|
property_set("ro.serialno", serialno[0] ? serialno : "");
|
|
property_set("ro.bootmode", bootmode[0] ? bootmode : "unknown");
|
|
property_set("ro.baseband", baseband[0] ? baseband : "unknown");
|
|
property_set("ro.carrier", carrier[0] ? carrier : "unknown");
|
|
property_set("ro.bootloader", bootloader[0] ? bootloader : "unknown");
|
|
|
|
property_set("ro.hardware", hardware);
|
|
snprintf(tmp, PROP_VALUE_MAX, "%d", revision);
|
|
property_set("ro.revision", tmp);
|
|
|
|
/* execute all the boot actions to get us started */
|
|
action_for_each_trigger("init", action_add_queue_tail);
|
|
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);
|
|
drain_action_queue();
|
|
|
|
/* read any property files on system or data and
|
|
* fire up the property service. This must happen
|
|
* after the ro.foo properties are set above so
|
|
* that /data/local.prop cannot interfere with them.
|
|
*/
|
|
start_property_service();
|
|
|
|
/* create a signalling mechanism for the sigchld handler */
|
|
if (socketpair(AF_UNIX, SOCK_STREAM, 0, s) == 0) {
|
|
signal_fd = s[0];
|
|
signal_recv_fd = s[1];
|
|
fcntl(s[0], F_SETFD, FD_CLOEXEC);
|
|
fcntl(s[0], F_SETFL, O_NONBLOCK);
|
|
fcntl(s[1], F_SETFD, FD_CLOEXEC);
|
|
fcntl(s[1], F_SETFL, O_NONBLOCK);
|
|
}
|
|
|
|
/* make sure we actually have all the pieces we need */
|
|
if ((get_device_fd() < 0) ||
|
|
(get_property_set_fd() < 0) ||
|
|
(signal_recv_fd < 0)) {
|
|
ERROR("init startup failure\n");
|
|
return 1;
|
|
}
|
|
|
|
/* execute all the boot actions to get us started */
|
|
action_for_each_trigger("early-boot", action_add_queue_tail);
|
|
action_for_each_trigger("boot", action_add_queue_tail);
|
|
drain_action_queue();
|
|
|
|
/* run all property triggers based on current state of the properties */
|
|
queue_all_property_triggers();
|
|
drain_action_queue();
|
|
|
|
/* enable property triggers */
|
|
property_triggers_enabled = 1;
|
|
|
|
ufds[0].fd = get_device_fd();
|
|
ufds[0].events = POLLIN;
|
|
ufds[1].fd = get_property_set_fd();
|
|
ufds[1].events = POLLIN;
|
|
ufds[2].fd = signal_recv_fd;
|
|
ufds[2].events = POLLIN;
|
|
fd_count = 3;
|
|
|
|
if (get_keychord_fd() > 0) {
|
|
ufds[3].fd = get_keychord_fd();
|
|
ufds[3].events = POLLIN;
|
|
fd_count++;
|
|
} else {
|
|
ufds[3].events = 0;
|
|
ufds[3].revents = 0;
|
|
}
|
|
|
|
#if BOOTCHART
|
|
bootchart_count = bootchart_init();
|
|
if (bootchart_count < 0) {
|
|
ERROR("bootcharting init failure\n");
|
|
} else if (bootchart_count > 0) {
|
|
NOTICE("bootcharting started (period=%d ms)\n", bootchart_count*BOOTCHART_POLLING_MS);
|
|
} else {
|
|
NOTICE("bootcharting ignored\n");
|
|
}
|
|
#endif
|
|
|
|
for(;;) {
|
|
int nr, i, timeout = -1;
|
|
|
|
for (i = 0; i < fd_count; i++)
|
|
ufds[i].revents = 0;
|
|
|
|
drain_action_queue();
|
|
restart_processes();
|
|
|
|
if (process_needs_restart) {
|
|
timeout = (process_needs_restart - gettime()) * 1000;
|
|
if (timeout < 0)
|
|
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;
|
|
|
|
if (ufds[2].revents == POLLIN) {
|
|
/* we got a SIGCHLD - reap and restart as needed */
|
|
read(signal_recv_fd, tmp, sizeof(tmp));
|
|
while (!wait_for_one_process(0))
|
|
;
|
|
continue;
|
|
}
|
|
|
|
if (ufds[0].revents == POLLIN)
|
|
handle_device_fd();
|
|
|
|
if (ufds[1].revents == POLLIN)
|
|
handle_property_set_fd();
|
|
if (ufds[3].revents == POLLIN)
|
|
handle_keychord();
|
|
}
|
|
|
|
return 0;
|
|
}
|