685 lines
21 KiB
C++
685 lines
21 KiB
C++
/*
|
|
* Copyright (C) 2008 The Android Open Source Project
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#include <ctype.h>
|
|
#include <dirent.h>
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <libgen.h>
|
|
#include <paths.h>
|
|
#include <signal.h>
|
|
#include <stdarg.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <sys/epoll.h>
|
|
#include <sys/mount.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/types.h>
|
|
#include <sys/un.h>
|
|
#include <sys/wait.h>
|
|
#include <unistd.h>
|
|
|
|
#include <mtd/mtd-user.h>
|
|
|
|
#include <selinux/selinux.h>
|
|
#include <selinux/label.h>
|
|
#include <selinux/android.h>
|
|
|
|
#include <base/file.h>
|
|
#include <base/stringprintf.h>
|
|
#include <base/strings.h>
|
|
#include <cutils/android_reboot.h>
|
|
#include <cutils/fs.h>
|
|
#include <cutils/iosched_policy.h>
|
|
#include <cutils/list.h>
|
|
#include <cutils/sockets.h>
|
|
#include <private/android_filesystem_config.h>
|
|
|
|
#include <memory>
|
|
|
|
#include "action.h"
|
|
#include "bootchart.h"
|
|
#include "devices.h"
|
|
#include "import_parser.h"
|
|
#include "init.h"
|
|
#include "init_parser.h"
|
|
#include "keychords.h"
|
|
#include "log.h"
|
|
#include "property_service.h"
|
|
#include "service.h"
|
|
#include "signal_handler.h"
|
|
#include "ueventd.h"
|
|
#include "util.h"
|
|
#include "watchdogd.h"
|
|
|
|
struct selabel_handle *sehandle;
|
|
struct selabel_handle *sehandle_prop;
|
|
|
|
static int property_triggers_enabled = 0;
|
|
|
|
static char qemu[32];
|
|
|
|
int have_console;
|
|
std::string console_name = "/dev/console";
|
|
static time_t process_needs_restart;
|
|
|
|
const char *ENV[32];
|
|
|
|
bool waiting_for_exec = false;
|
|
|
|
static int epoll_fd = -1;
|
|
|
|
void register_epoll_handler(int fd, void (*fn)()) {
|
|
epoll_event ev;
|
|
ev.events = EPOLLIN;
|
|
ev.data.ptr = reinterpret_cast<void*>(fn);
|
|
if (epoll_ctl(epoll_fd, EPOLL_CTL_ADD, fd, &ev) == -1) {
|
|
ERROR("epoll_ctl failed: %s\n", strerror(errno));
|
|
}
|
|
}
|
|
|
|
/* add_environment - add "key=value" to the current environment */
|
|
int add_environment(const char *key, const char *val)
|
|
{
|
|
size_t n;
|
|
size_t key_len = strlen(key);
|
|
|
|
/* The last environment entry is reserved to terminate the list */
|
|
for (n = 0; n < (ARRAY_SIZE(ENV) - 1); n++) {
|
|
|
|
/* Delete any existing entry for this key */
|
|
if (ENV[n] != NULL) {
|
|
size_t entry_key_len = strcspn(ENV[n], "=");
|
|
if ((entry_key_len == key_len) && (strncmp(ENV[n], key, entry_key_len) == 0)) {
|
|
free((char*)ENV[n]);
|
|
ENV[n] = NULL;
|
|
}
|
|
}
|
|
|
|
/* Add entry if a free slot is available */
|
|
if (ENV[n] == NULL) {
|
|
char* entry;
|
|
asprintf(&entry, "%s=%s", key, val);
|
|
ENV[n] = entry;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
ERROR("No env. room to store: '%s':'%s'\n", key, val);
|
|
|
|
return -1;
|
|
}
|
|
|
|
void property_changed(const char *name, const char *value)
|
|
{
|
|
if (property_triggers_enabled)
|
|
ActionManager::GetInstance().QueuePropertyTrigger(name, value);
|
|
}
|
|
|
|
static void restart_processes()
|
|
{
|
|
process_needs_restart = 0;
|
|
ServiceManager::GetInstance().
|
|
ForEachServiceWithFlags(SVC_RESTARTING, [] (Service* s) {
|
|
s->RestartIfNeeded(process_needs_restart);
|
|
});
|
|
}
|
|
|
|
static void msg_start(const std::string& name)
|
|
{
|
|
Service* svc = nullptr;
|
|
std::vector<std::string> vargs;
|
|
|
|
size_t colon_pos = name.find(':');
|
|
if (colon_pos == std::string::npos) {
|
|
svc = ServiceManager::GetInstance().FindServiceByName(name);
|
|
} else {
|
|
std::string service_name(name.substr(0, colon_pos));
|
|
std::string args(name.substr(colon_pos + 1));
|
|
vargs = android::base::Split(args, " ");
|
|
|
|
svc = ServiceManager::GetInstance().FindServiceByName(service_name);
|
|
}
|
|
|
|
if (svc) {
|
|
svc->Start(vargs);
|
|
} else {
|
|
ERROR("no such service '%s'\n", name.c_str());
|
|
}
|
|
}
|
|
|
|
static void msg_stop(const std::string& name)
|
|
{
|
|
Service* svc = ServiceManager::GetInstance().FindServiceByName(name);
|
|
|
|
if (svc) {
|
|
svc->Stop();
|
|
} else {
|
|
ERROR("no such service '%s'\n", name.c_str());
|
|
}
|
|
}
|
|
|
|
static void msg_restart(const std::string& name)
|
|
{
|
|
Service* svc = ServiceManager::GetInstance().FindServiceByName(name);
|
|
|
|
if (svc) {
|
|
svc->Restart();
|
|
} else {
|
|
ERROR("no such service '%s'\n", name.c_str());
|
|
}
|
|
}
|
|
|
|
void handle_control_message(const std::string& msg, const std::string& arg)
|
|
{
|
|
if (msg == "start") {
|
|
msg_start(arg);
|
|
} else if (msg == "stop") {
|
|
msg_stop(arg);
|
|
} else if (msg == "restart") {
|
|
msg_restart(arg);
|
|
} else {
|
|
ERROR("unknown control msg '%s'\n", msg.c_str());
|
|
}
|
|
}
|
|
|
|
static int wait_for_coldboot_done_action(const std::vector<std::string>& args) {
|
|
Timer t;
|
|
|
|
NOTICE("Waiting for %s...\n", COLDBOOT_DONE);
|
|
// Any longer than 1s is an unreasonable length of time to delay booting.
|
|
// If you're hitting this timeout, check that you didn't make your
|
|
// sepolicy regular expressions too expensive (http://b/19899875).
|
|
if (wait_for_file(COLDBOOT_DONE, 1)) {
|
|
ERROR("Timed out waiting for %s\n", COLDBOOT_DONE);
|
|
}
|
|
|
|
NOTICE("Waiting for %s took %.2fs.\n", COLDBOOT_DONE, t.duration());
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Writes 512 bytes of output from Hardware RNG (/dev/hw_random, backed
|
|
* by Linux kernel's hw_random framework) into Linux RNG's via /dev/urandom.
|
|
* Does nothing if Hardware RNG is not present.
|
|
*
|
|
* Since we don't yet trust the quality of Hardware RNG, these bytes are not
|
|
* mixed into the primary pool of Linux RNG and the entropy estimate is left
|
|
* unmodified.
|
|
*
|
|
* If the HW RNG device /dev/hw_random is present, we require that at least
|
|
* 512 bytes read from it are written into Linux RNG. QA is expected to catch
|
|
* devices/configurations where these I/O operations are blocking for a long
|
|
* time. We do not reboot or halt on failures, as this is a best-effort
|
|
* attempt.
|
|
*/
|
|
static int mix_hwrng_into_linux_rng_action(const std::vector<std::string>& args)
|
|
{
|
|
int result = -1;
|
|
int hwrandom_fd = -1;
|
|
int urandom_fd = -1;
|
|
char buf[512];
|
|
ssize_t chunk_size;
|
|
size_t total_bytes_written = 0;
|
|
|
|
hwrandom_fd = TEMP_FAILURE_RETRY(
|
|
open("/dev/hw_random", O_RDONLY | O_NOFOLLOW | O_CLOEXEC));
|
|
if (hwrandom_fd == -1) {
|
|
if (errno == ENOENT) {
|
|
ERROR("/dev/hw_random not found\n");
|
|
/* It's not an error to not have a Hardware RNG. */
|
|
result = 0;
|
|
} else {
|
|
ERROR("Failed to open /dev/hw_random: %s\n", strerror(errno));
|
|
}
|
|
goto ret;
|
|
}
|
|
|
|
urandom_fd = TEMP_FAILURE_RETRY(
|
|
open("/dev/urandom", O_WRONLY | O_NOFOLLOW | O_CLOEXEC));
|
|
if (urandom_fd == -1) {
|
|
ERROR("Failed to open /dev/urandom: %s\n", strerror(errno));
|
|
goto ret;
|
|
}
|
|
|
|
while (total_bytes_written < sizeof(buf)) {
|
|
chunk_size = TEMP_FAILURE_RETRY(
|
|
read(hwrandom_fd, buf, sizeof(buf) - total_bytes_written));
|
|
if (chunk_size == -1) {
|
|
ERROR("Failed to read from /dev/hw_random: %s\n", strerror(errno));
|
|
goto ret;
|
|
} else if (chunk_size == 0) {
|
|
ERROR("Failed to read from /dev/hw_random: EOF\n");
|
|
goto ret;
|
|
}
|
|
|
|
chunk_size = TEMP_FAILURE_RETRY(write(urandom_fd, buf, chunk_size));
|
|
if (chunk_size == -1) {
|
|
ERROR("Failed to write to /dev/urandom: %s\n", strerror(errno));
|
|
goto ret;
|
|
}
|
|
total_bytes_written += chunk_size;
|
|
}
|
|
|
|
INFO("Mixed %zu bytes from /dev/hw_random into /dev/urandom",
|
|
total_bytes_written);
|
|
result = 0;
|
|
|
|
ret:
|
|
if (hwrandom_fd != -1) {
|
|
close(hwrandom_fd);
|
|
}
|
|
if (urandom_fd != -1) {
|
|
close(urandom_fd);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
static int keychord_init_action(const std::vector<std::string>& args)
|
|
{
|
|
keychord_init();
|
|
return 0;
|
|
}
|
|
|
|
static int console_init_action(const std::vector<std::string>& args)
|
|
{
|
|
std::string console = property_get("ro.boot.console");
|
|
if (!console.empty()) {
|
|
console_name = "/dev/" + console;
|
|
}
|
|
|
|
int fd = open(console_name.c_str(), O_RDWR | O_CLOEXEC);
|
|
if (fd >= 0)
|
|
have_console = 1;
|
|
close(fd);
|
|
|
|
fd = open("/dev/tty0", O_WRONLY | O_CLOEXEC);
|
|
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);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void import_kernel_nv(const std::string& key, const std::string& value, bool for_emulator) {
|
|
if (key.empty()) return;
|
|
|
|
if (for_emulator) {
|
|
// In the emulator, export any kernel option with the "ro.kernel." prefix.
|
|
property_set(android::base::StringPrintf("ro.kernel.%s", key.c_str()).c_str(), value.c_str());
|
|
return;
|
|
}
|
|
|
|
if (key == "qemu") {
|
|
strlcpy(qemu, value.c_str(), sizeof(qemu));
|
|
} else if (android::base::StartsWith(key, "androidboot.")) {
|
|
property_set(android::base::StringPrintf("ro.boot.%s", key.c_str() + 12).c_str(),
|
|
value.c_str());
|
|
}
|
|
}
|
|
|
|
static void export_kernel_boot_props() {
|
|
struct {
|
|
const char *src_prop;
|
|
const char *dst_prop;
|
|
const char *default_value;
|
|
} prop_map[] = {
|
|
{ "ro.boot.serialno", "ro.serialno", "", },
|
|
{ "ro.boot.mode", "ro.bootmode", "unknown", },
|
|
{ "ro.boot.baseband", "ro.baseband", "unknown", },
|
|
{ "ro.boot.bootloader", "ro.bootloader", "unknown", },
|
|
{ "ro.boot.hardware", "ro.hardware", "unknown", },
|
|
{ "ro.boot.revision", "ro.revision", "0", },
|
|
};
|
|
for (size_t i = 0; i < ARRAY_SIZE(prop_map); i++) {
|
|
std::string value = property_get(prop_map[i].src_prop);
|
|
property_set(prop_map[i].dst_prop, (!value.empty()) ? value.c_str() : prop_map[i].default_value);
|
|
}
|
|
}
|
|
|
|
static void process_kernel_dt() {
|
|
static const char android_dir[] = "/proc/device-tree/firmware/android";
|
|
|
|
std::string file_name = android::base::StringPrintf("%s/compatible", android_dir);
|
|
|
|
std::string dt_file;
|
|
android::base::ReadFileToString(file_name, &dt_file);
|
|
if (!dt_file.compare("android,firmware")) {
|
|
ERROR("firmware/android is not compatible with 'android,firmware'\n");
|
|
return;
|
|
}
|
|
|
|
std::unique_ptr<DIR, int(*)(DIR*)>dir(opendir(android_dir), closedir);
|
|
if (!dir) return;
|
|
|
|
struct dirent *dp;
|
|
while ((dp = readdir(dir.get())) != NULL) {
|
|
if (dp->d_type != DT_REG || !strcmp(dp->d_name, "compatible") || !strcmp(dp->d_name, "name")) {
|
|
continue;
|
|
}
|
|
|
|
file_name = android::base::StringPrintf("%s/%s", android_dir, dp->d_name);
|
|
|
|
android::base::ReadFileToString(file_name, &dt_file);
|
|
std::replace(dt_file.begin(), dt_file.end(), ',', '.');
|
|
|
|
std::string property_name = android::base::StringPrintf("ro.boot.%s", dp->d_name);
|
|
property_set(property_name.c_str(), dt_file.c_str());
|
|
}
|
|
}
|
|
|
|
static void process_kernel_cmdline() {
|
|
// Don't expose the raw commandline to unprivileged processes.
|
|
chmod("/proc/cmdline", 0440);
|
|
|
|
// The first pass does the common stuff, and finds if we are in qemu.
|
|
// The second pass is only necessary for qemu to export all kernel params
|
|
// as properties.
|
|
import_kernel_cmdline(false, import_kernel_nv);
|
|
if (qemu[0]) import_kernel_cmdline(true, import_kernel_nv);
|
|
}
|
|
|
|
static int queue_property_triggers_action(const std::vector<std::string>& args)
|
|
{
|
|
ActionManager::GetInstance().QueueAllPropertyTriggers();
|
|
/* enable property triggers */
|
|
property_triggers_enabled = 1;
|
|
return 0;
|
|
}
|
|
|
|
static void selinux_init_all_handles(void)
|
|
{
|
|
sehandle = selinux_android_file_context_handle();
|
|
selinux_android_set_sehandle(sehandle);
|
|
sehandle_prop = selinux_android_prop_context_handle();
|
|
}
|
|
|
|
enum selinux_enforcing_status { SELINUX_PERMISSIVE, SELINUX_ENFORCING };
|
|
|
|
static selinux_enforcing_status selinux_status_from_cmdline() {
|
|
selinux_enforcing_status status = SELINUX_ENFORCING;
|
|
|
|
import_kernel_cmdline(false, [&](const std::string& key, const std::string& value, bool in_qemu) {
|
|
if (key == "androidboot.selinux" && value == "permissive") {
|
|
status = SELINUX_PERMISSIVE;
|
|
}
|
|
});
|
|
|
|
return status;
|
|
}
|
|
|
|
static bool selinux_is_enforcing(void)
|
|
{
|
|
if (ALLOW_PERMISSIVE_SELINUX) {
|
|
return selinux_status_from_cmdline() == SELINUX_ENFORCING;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
int selinux_reload_policy(void)
|
|
{
|
|
INFO("SELinux: Attempting to reload policy files\n");
|
|
|
|
if (selinux_android_reload_policy() == -1) {
|
|
return -1;
|
|
}
|
|
|
|
if (sehandle)
|
|
selabel_close(sehandle);
|
|
|
|
if (sehandle_prop)
|
|
selabel_close(sehandle_prop);
|
|
|
|
selinux_init_all_handles();
|
|
return 0;
|
|
}
|
|
|
|
static int audit_callback(void *data, security_class_t /*cls*/, char *buf, size_t len) {
|
|
|
|
property_audit_data *d = reinterpret_cast<property_audit_data*>(data);
|
|
|
|
if (!d || !d->name || !d->cr) {
|
|
ERROR("audit_callback invoked with null data arguments!");
|
|
return 0;
|
|
}
|
|
|
|
snprintf(buf, len, "property=%s pid=%d uid=%d gid=%d", d->name,
|
|
d->cr->pid, d->cr->uid, d->cr->gid);
|
|
return 0;
|
|
}
|
|
|
|
static void security_failure() {
|
|
ERROR("Security failure; rebooting into recovery mode...\n");
|
|
android_reboot(ANDROID_RB_RESTART2, 0, "recovery");
|
|
while (true) { pause(); } // never reached
|
|
}
|
|
|
|
static void selinux_initialize(bool in_kernel_domain) {
|
|
Timer t;
|
|
|
|
selinux_callback cb;
|
|
cb.func_log = selinux_klog_callback;
|
|
selinux_set_callback(SELINUX_CB_LOG, cb);
|
|
cb.func_audit = audit_callback;
|
|
selinux_set_callback(SELINUX_CB_AUDIT, cb);
|
|
|
|
if (in_kernel_domain) {
|
|
INFO("Loading SELinux policy...\n");
|
|
if (selinux_android_load_policy() < 0) {
|
|
ERROR("failed to load policy: %s\n", strerror(errno));
|
|
security_failure();
|
|
}
|
|
|
|
bool kernel_enforcing = (security_getenforce() == 1);
|
|
bool is_enforcing = selinux_is_enforcing();
|
|
if (kernel_enforcing != is_enforcing) {
|
|
if (security_setenforce(is_enforcing)) {
|
|
ERROR("security_setenforce(%s) failed: %s\n",
|
|
is_enforcing ? "true" : "false", strerror(errno));
|
|
security_failure();
|
|
}
|
|
}
|
|
|
|
if (write_file("/sys/fs/selinux/checkreqprot", "0") == -1) {
|
|
security_failure();
|
|
}
|
|
|
|
NOTICE("(Initializing SELinux %s took %.2fs.)\n",
|
|
is_enforcing ? "enforcing" : "non-enforcing", t.duration());
|
|
} else {
|
|
selinux_init_all_handles();
|
|
}
|
|
}
|
|
|
|
int main(int argc, char** argv) {
|
|
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);
|
|
|
|
add_environment("PATH", _PATH_DEFPATH);
|
|
|
|
bool is_first_stage = (argc == 1) || (strcmp(argv[1], "--second-stage") != 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.
|
|
if (is_first_stage) {
|
|
mount("tmpfs", "/dev", "tmpfs", MS_NOSUID, "mode=0755");
|
|
mkdir("/dev/pts", 0755);
|
|
mkdir("/dev/socket", 0755);
|
|
mount("devpts", "/dev/pts", "devpts", 0, NULL);
|
|
#define MAKE_STR(x) __STRING(x)
|
|
mount("proc", "/proc", "proc", 0, "hidepid=2,gid=" MAKE_STR(AID_READPROC));
|
|
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();
|
|
klog_init();
|
|
klog_set_level(KLOG_NOTICE_LEVEL);
|
|
|
|
NOTICE("init %s started!\n", is_first_stage ? "first stage" : "second stage");
|
|
|
|
if (!is_first_stage) {
|
|
// Indicate that booting is in progress to background fw loaders, etc.
|
|
close(open("/dev/.booting", O_WRONLY | O_CREAT | O_CLOEXEC, 0000));
|
|
|
|
property_init();
|
|
|
|
// If arguments are passed both on the command line and in DT,
|
|
// properties set in DT always have priority over the command-line ones.
|
|
process_kernel_dt();
|
|
process_kernel_cmdline();
|
|
|
|
// Propagate the kernel variables to internal variables
|
|
// used by init as well as the current required properties.
|
|
export_kernel_boot_props();
|
|
}
|
|
|
|
// Set up SELinux, including loading the SELinux policy if we're in the kernel domain.
|
|
selinux_initialize(is_first_stage);
|
|
|
|
// If we're in the kernel domain, re-exec init to transition to the init domain now
|
|
// that the SELinux policy has been loaded.
|
|
if (is_first_stage) {
|
|
if (restorecon("/init") == -1) {
|
|
ERROR("restorecon failed: %s\n", strerror(errno));
|
|
security_failure();
|
|
}
|
|
char* path = argv[0];
|
|
char* args[] = { path, const_cast<char*>("--second-stage"), nullptr };
|
|
if (execv(path, args) == -1) {
|
|
ERROR("execv(\"%s\") failed: %s\n", path, strerror(errno));
|
|
security_failure();
|
|
}
|
|
}
|
|
|
|
// 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.
|
|
NOTICE("Running restorecon...\n");
|
|
restorecon("/dev");
|
|
restorecon("/dev/socket");
|
|
restorecon("/dev/__properties__");
|
|
restorecon_recursive("/sys");
|
|
|
|
epoll_fd = epoll_create1(EPOLL_CLOEXEC);
|
|
if (epoll_fd == -1) {
|
|
ERROR("epoll_create1 failed: %s\n", strerror(errno));
|
|
exit(1);
|
|
}
|
|
|
|
signal_handler_init();
|
|
|
|
property_load_boot_defaults();
|
|
start_property_service();
|
|
|
|
const BuiltinFunctionMap function_map;
|
|
Action::set_function_map(&function_map);
|
|
|
|
Parser& parser = Parser::GetInstance();
|
|
parser.AddSectionParser("service",std::make_unique<ServiceParser>());
|
|
parser.AddSectionParser("on", std::make_unique<ActionParser>());
|
|
parser.AddSectionParser("import", std::make_unique<ImportParser>());
|
|
parser.ParseConfig("/init.rc");
|
|
|
|
ActionManager& am = ActionManager::GetInstance();
|
|
|
|
am.QueueEventTrigger("early-init");
|
|
|
|
// Queue an action that waits for coldboot done so we know ueventd has set up all of /dev...
|
|
am.QueueBuiltinAction(wait_for_coldboot_done_action, "wait_for_coldboot_done");
|
|
// ... so that we can start queuing up actions that require stuff from /dev.
|
|
am.QueueBuiltinAction(mix_hwrng_into_linux_rng_action, "mix_hwrng_into_linux_rng");
|
|
am.QueueBuiltinAction(keychord_init_action, "keychord_init");
|
|
am.QueueBuiltinAction(console_init_action, "console_init");
|
|
|
|
// Trigger all the boot actions to get us started.
|
|
am.QueueEventTrigger("init");
|
|
|
|
// Repeat mix_hwrng_into_linux_rng in case /dev/hw_random or /dev/random
|
|
// wasn't ready immediately after wait_for_coldboot_done
|
|
am.QueueBuiltinAction(mix_hwrng_into_linux_rng_action, "mix_hwrng_into_linux_rng");
|
|
|
|
// Don't mount filesystems or start core system services in charger mode.
|
|
std::string bootmode = property_get("ro.bootmode");
|
|
if (bootmode == "charger") {
|
|
am.QueueEventTrigger("charger");
|
|
} else {
|
|
am.QueueEventTrigger("late-init");
|
|
}
|
|
|
|
// Run all property triggers based on current state of the properties.
|
|
am.QueueBuiltinAction(queue_property_triggers_action, "queue_property_triggers");
|
|
|
|
while (true) {
|
|
if (!waiting_for_exec) {
|
|
am.ExecuteOneCommand();
|
|
restart_processes();
|
|
}
|
|
|
|
int timeout = -1;
|
|
if (process_needs_restart) {
|
|
timeout = (process_needs_restart - gettime()) * 1000;
|
|
if (timeout < 0)
|
|
timeout = 0;
|
|
}
|
|
|
|
if (am.HasMoreCommands()) {
|
|
timeout = 0;
|
|
}
|
|
|
|
bootchart_sample(&timeout);
|
|
|
|
epoll_event ev;
|
|
int nr = TEMP_FAILURE_RETRY(epoll_wait(epoll_fd, &ev, 1, timeout));
|
|
if (nr == -1) {
|
|
ERROR("epoll_wait failed: %s\n", strerror(errno));
|
|
} else if (nr == 1) {
|
|
((void (*)()) ev.data.ptr)();
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|