Build init as C++.
This is just the minimal change to keep it building.
Change-Id: I245c5b8413a1db114576c81462eb5737f5ffcef2
diff --git a/init/init.cpp b/init/init.cpp
new file mode 100644
index 0000000..06a7326
--- /dev/null
+++ b/init/init.cpp
@@ -0,0 +1,1187 @@
+/*
+ * 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 <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <ctype.h>
+#include <signal.h>
+#include <sys/wait.h>
+#include <sys/mount.h>
+#include <sys/stat.h>
+#include <sys/poll.h>
+#include <errno.h>
+#include <stdarg.h>
+#include <mtd/mtd-user.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+
+#include <selinux/selinux.h>
+#include <selinux/label.h>
+#include <selinux/android.h>
+
+#include <libgen.h>
+
+#include <cutils/list.h>
+#include <cutils/android_reboot.h>
+#include <cutils/sockets.h>
+#include <cutils/iosched_policy.h>
+#include <cutils/fs.h>
+#include <private/android_filesystem_config.h>
+#include <termios.h>
+
+#include "devices.h"
+#include "init.h"
+#include "log.h"
+#include "property_service.h"
+#include "bootchart.h"
+#include "signal_handler.h"
+#include "keychords.h"
+#include "init_parser.h"
+#include "util.h"
+#include "ueventd.h"
+#include "watchdogd.h"
+
+struct selabel_handle *sehandle;
+struct selabel_handle *sehandle_prop;
+
+static int property_triggers_enabled = 0;
+
+#if BOOTCHART
+static int bootchart_count;
+static long long bootchart_time = 0;
+#endif
+
+static char console[32];
+static char bootmode[32];
+static char hardware[32];
+static unsigned revision = 0;
+static char qemu[32];
+
+static struct action *cur_action = NULL;
+static struct command *cur_command = NULL;
+
+void notify_service_state(const char *name, const char *state)
+{
+ char pname[PROP_NAME_MAX];
+ int len = strlen(name);
+ if ((len + 10) > PROP_NAME_MAX)
+ return;
+ snprintf(pname, sizeof(pname), "init.svc.%s", name);
+ property_set(pname, state);
+}
+
+static int have_console;
+static char console_name[PROP_VALUE_MAX] = "/dev/console";
+static time_t process_needs_restart;
+
+static const char *ENV[32];
+
+/* 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 zap_stdio(void)
+{
+ int fd;
+ fd = open("/dev/null", O_RDWR);
+ dup2(fd, 0);
+ dup2(fd, 1);
+ dup2(fd, 2);
+ close(fd);
+}
+
+static void open_console()
+{
+ int fd;
+ if ((fd = open(console_name, O_RDWR)) < 0) {
+ fd = open("/dev/null", O_RDWR);
+ }
+ ioctl(fd, TIOCSCTTY, 0);
+ dup2(fd, 0);
+ dup2(fd, 1);
+ dup2(fd, 2);
+ close(fd);
+}
+
+static void publish_socket(const char *name, int fd)
+{
+ char key[64] = ANDROID_SOCKET_ENV_PREFIX;
+ char val[64];
+
+ strlcpy(key + sizeof(ANDROID_SOCKET_ENV_PREFIX) - 1,
+ name,
+ sizeof(key) - sizeof(ANDROID_SOCKET_ENV_PREFIX));
+ snprintf(val, sizeof(val), "%d", fd);
+ add_environment(key, val);
+
+ /* make sure we don't close-on-exec */
+ fcntl(fd, F_SETFD, 0);
+}
+
+void service_start(struct service *svc, const char *dynamic_args)
+{
+ struct stat s;
+ pid_t pid;
+ int needs_console;
+ char *scon = NULL;
+ int rc;
+
+ /* starting a service removes it from the disabled or reset
+ * state and immediately takes it out of the restarting
+ * state if it was in there
+ */
+ svc->flags &= (~(SVC_DISABLED|SVC_RESTARTING|SVC_RESET|SVC_RESTART|SVC_DISABLED_START));
+ svc->time_started = 0;
+
+ /* running processes require no additional work -- if
+ * they're in the process of exiting, we've ensured
+ * that they will immediately restart on exit, unless
+ * they are ONESHOT
+ */
+ if (svc->flags & SVC_RUNNING) {
+ return;
+ }
+
+ needs_console = (svc->flags & SVC_CONSOLE) ? 1 : 0;
+ if (needs_console && (!have_console)) {
+ ERROR("service '%s' requires console\n", svc->name);
+ svc->flags |= SVC_DISABLED;
+ return;
+ }
+
+ if (stat(svc->args[0], &s) != 0) {
+ ERROR("cannot find '%s', disabling '%s'\n", svc->args[0], svc->name);
+ svc->flags |= SVC_DISABLED;
+ return;
+ }
+
+ if ((!(svc->flags & SVC_ONESHOT)) && dynamic_args) {
+ ERROR("service '%s' must be one-shot to use dynamic args, disabling\n",
+ svc->args[0]);
+ svc->flags |= SVC_DISABLED;
+ return;
+ }
+
+ if (is_selinux_enabled() > 0) {
+ if (svc->seclabel) {
+ scon = strdup(svc->seclabel);
+ if (!scon) {
+ ERROR("Out of memory while starting '%s'\n", svc->name);
+ return;
+ }
+ } else {
+ char *mycon = NULL, *fcon = NULL;
+
+ INFO("computing context for service '%s'\n", svc->args[0]);
+ rc = getcon(&mycon);
+ if (rc < 0) {
+ ERROR("could not get context while starting '%s'\n", svc->name);
+ return;
+ }
+
+ rc = getfilecon(svc->args[0], &fcon);
+ if (rc < 0) {
+ ERROR("could not get context while starting '%s'\n", svc->name);
+ freecon(mycon);
+ return;
+ }
+
+ rc = security_compute_create(mycon, fcon, string_to_security_class("process"), &scon);
+ if (rc == 0 && !strcmp(scon, mycon)) {
+ ERROR("Warning! Service %s needs a SELinux domain defined; please fix!\n", svc->name);
+ }
+ freecon(mycon);
+ freecon(fcon);
+ if (rc < 0) {
+ ERROR("could not get context while starting '%s'\n", svc->name);
+ return;
+ }
+ }
+ }
+
+ NOTICE("starting '%s'\n", svc->name);
+
+ pid = fork();
+
+ if (pid == 0) {
+ struct socketinfo *si;
+ struct svcenvinfo *ei;
+ char tmp[32];
+ int fd, sz;
+
+ umask(077);
+ if (properties_inited()) {
+ get_property_workspace(&fd, &sz);
+ sprintf(tmp, "%d,%d", dup(fd), sz);
+ add_environment("ANDROID_PROPERTY_WORKSPACE", tmp);
+ }
+
+ for (ei = svc->envvars; ei; ei = ei->next)
+ add_environment(ei->name, ei->value);
+
+ for (si = svc->sockets; si; si = si->next) {
+ int socket_type = (
+ !strcmp(si->type, "stream") ? SOCK_STREAM :
+ (!strcmp(si->type, "dgram") ? SOCK_DGRAM : SOCK_SEQPACKET));
+ int s = create_socket(si->name, socket_type,
+ si->perm, si->uid, si->gid, si->socketcon ?: scon);
+ if (s >= 0) {
+ publish_socket(si->name, s);
+ }
+ }
+
+ freecon(scon);
+ scon = NULL;
+
+ if (svc->ioprio_class != IoSchedClass_NONE) {
+ if (android_set_ioprio(getpid(), svc->ioprio_class, svc->ioprio_pri)) {
+ ERROR("Failed to set pid %d ioprio = %d,%d: %s\n",
+ getpid(), svc->ioprio_class, svc->ioprio_pri, strerror(errno));
+ }
+ }
+
+ if (needs_console) {
+ setsid();
+ open_console();
+ } else {
+ zap_stdio();
+ }
+
+#if 0
+ for (n = 0; svc->args[n]; n++) {
+ INFO("args[%d] = '%s'\n", n, svc->args[n]);
+ }
+ for (n = 0; ENV[n]; n++) {
+ INFO("env[%d] = '%s'\n", n, ENV[n]);
+ }
+#endif
+
+ setpgid(0, getpid());
+
+ /* as requested, set our gid, supplemental gids, and uid */
+ if (svc->gid) {
+ if (setgid(svc->gid) != 0) {
+ ERROR("setgid failed: %s\n", strerror(errno));
+ _exit(127);
+ }
+ }
+ if (svc->nr_supp_gids) {
+ if (setgroups(svc->nr_supp_gids, svc->supp_gids) != 0) {
+ ERROR("setgroups failed: %s\n", strerror(errno));
+ _exit(127);
+ }
+ }
+ if (svc->uid) {
+ if (setuid(svc->uid) != 0) {
+ ERROR("setuid failed: %s\n", strerror(errno));
+ _exit(127);
+ }
+ }
+ if (svc->seclabel) {
+ if (is_selinux_enabled() > 0 && setexeccon(svc->seclabel) < 0) {
+ ERROR("cannot setexeccon('%s'): %s\n", svc->seclabel, strerror(errno));
+ _exit(127);
+ }
+ }
+
+ if (!dynamic_args) {
+ if (execve(svc->args[0], (char**) svc->args, (char**) ENV) < 0) {
+ ERROR("cannot execve('%s'): %s\n", svc->args[0], strerror(errno));
+ }
+ } else {
+ char *arg_ptrs[INIT_PARSER_MAXARGS+1];
+ int arg_idx = svc->nargs;
+ char *tmp = strdup(dynamic_args);
+ char *next = tmp;
+ char *bword;
+
+ /* Copy the static arguments */
+ memcpy(arg_ptrs, svc->args, (svc->nargs * sizeof(char *)));
+
+ while((bword = strsep(&next, " "))) {
+ arg_ptrs[arg_idx++] = bword;
+ if (arg_idx == INIT_PARSER_MAXARGS)
+ break;
+ }
+ arg_ptrs[arg_idx] = NULL;
+ execve(svc->args[0], (char**) arg_ptrs, (char**) ENV);
+ }
+ _exit(127);
+ }
+
+ freecon(scon);
+
+ if (pid < 0) {
+ ERROR("failed to start '%s'\n", svc->name);
+ svc->pid = 0;
+ return;
+ }
+
+ svc->time_started = gettime();
+ svc->pid = pid;
+ svc->flags |= SVC_RUNNING;
+
+ if (properties_inited())
+ notify_service_state(svc->name, "running");
+}
+
+/* The how field should be either SVC_DISABLED, SVC_RESET, or SVC_RESTART */
+static void service_stop_or_reset(struct service *svc, int how)
+{
+ /* The service is still SVC_RUNNING until its process exits, but if it has
+ * already exited it shoudn't attempt a restart yet. */
+ svc->flags &= ~(SVC_RESTARTING | SVC_DISABLED_START);
+
+ if ((how != SVC_DISABLED) && (how != SVC_RESET) && (how != SVC_RESTART)) {
+ /* Hrm, an illegal flag. Default to SVC_DISABLED */
+ how = SVC_DISABLED;
+ }
+ /* if the service has not yet started, prevent
+ * it from auto-starting with its class
+ */
+ if (how == SVC_RESET) {
+ svc->flags |= (svc->flags & SVC_RC_DISABLED) ? SVC_DISABLED : SVC_RESET;
+ } else {
+ svc->flags |= how;
+ }
+
+ if (svc->pid) {
+ NOTICE("service '%s' is being killed\n", svc->name);
+ kill(-svc->pid, SIGKILL);
+ notify_service_state(svc->name, "stopping");
+ } else {
+ notify_service_state(svc->name, "stopped");
+ }
+}
+
+void service_reset(struct service *svc)
+{
+ service_stop_or_reset(svc, SVC_RESET);
+}
+
+void service_stop(struct service *svc)
+{
+ service_stop_or_reset(svc, SVC_DISABLED);
+}
+
+void service_restart(struct service *svc)
+{
+ if (svc->flags & SVC_RUNNING) {
+ /* Stop, wait, then start the service. */
+ service_stop_or_reset(svc, SVC_RESTART);
+ } else if (!(svc->flags & SVC_RESTARTING)) {
+ /* Just start the service since it's not running. */
+ service_start(svc, NULL);
+ } /* else: Service is restarting anyways. */
+}
+
+void property_changed(const char *name, const char *value)
+{
+ if (property_triggers_enabled)
+ queue_property_triggers(name, value);
+}
+
+static void restart_service_if_needed(struct service *svc)
+{
+ time_t next_start_time = svc->time_started + 5;
+
+ if (next_start_time <= gettime()) {
+ svc->flags &= (~SVC_RESTARTING);
+ service_start(svc, NULL);
+ return;
+ }
+
+ if ((next_start_time < process_needs_restart) ||
+ (process_needs_restart == 0)) {
+ process_needs_restart = next_start_time;
+ }
+}
+
+static void restart_processes()
+{
+ process_needs_restart = 0;
+ service_for_each_flags(SVC_RESTARTING,
+ restart_service_if_needed);
+}
+
+static void msg_start(const char *name)
+{
+ struct service *svc = NULL;
+ char *tmp = NULL;
+ char *args = NULL;
+
+ if (!strchr(name, ':'))
+ svc = service_find_by_name(name);
+ else {
+ tmp = strdup(name);
+ if (tmp) {
+ args = strchr(tmp, ':');
+ *args = '\0';
+ args++;
+
+ svc = service_find_by_name(tmp);
+ }
+ }
+
+ if (svc) {
+ service_start(svc, args);
+ } else {
+ ERROR("no such service '%s'\n", name);
+ }
+ if (tmp)
+ free(tmp);
+}
+
+static void msg_stop(const char *name)
+{
+ struct service *svc = service_find_by_name(name);
+
+ if (svc) {
+ service_stop(svc);
+ } else {
+ ERROR("no such service '%s'\n", name);
+ }
+}
+
+static void msg_restart(const char *name)
+{
+ struct service *svc = service_find_by_name(name);
+
+ if (svc) {
+ service_restart(svc);
+ } else {
+ ERROR("no such service '%s'\n", name);
+ }
+}
+
+void handle_control_message(const char *msg, const char *arg)
+{
+ if (!strcmp(msg,"start")) {
+ msg_start(arg);
+ } else if (!strcmp(msg,"stop")) {
+ msg_stop(arg);
+ } else if (!strcmp(msg,"restart")) {
+ msg_restart(arg);
+ } else {
+ ERROR("unknown control msg '%s'\n", msg);
+ }
+}
+
+static struct command *get_first_command(struct action *act)
+{
+ struct listnode *node;
+ node = list_head(&act->commands);
+ if (!node || list_empty(&act->commands))
+ return NULL;
+
+ return node_to_item(node, struct command, clist);
+}
+
+static struct command *get_next_command(struct action *act, struct command *cmd)
+{
+ struct listnode *node;
+ node = cmd->clist.next;
+ if (!node)
+ return NULL;
+ if (node == &act->commands)
+ return NULL;
+
+ return node_to_item(node, struct command, clist);
+}
+
+static int is_last_command(struct action *act, struct command *cmd)
+{
+ return (list_tail(&act->commands) == &cmd->clist);
+}
+
+
+void build_triggers_string(char *name_str, int length, struct action *cur_action) {
+ struct listnode *node;
+ struct trigger *cur_trigger;
+
+ list_for_each(node, &cur_action->triggers) {
+ cur_trigger = node_to_item(node, struct trigger, nlist);
+ if (node != cur_action->triggers.next) {
+ strlcat(name_str, " " , length);
+ }
+ strlcat(name_str, cur_trigger->name , length);
+ }
+}
+
+void execute_one_command(void)
+{
+ int ret, i;
+ char cmd_str[256] = "";
+ char name_str[256] = "";
+
+ if (!cur_action || !cur_command || is_last_command(cur_action, cur_command)) {
+ cur_action = action_remove_queue_head();
+ cur_command = NULL;
+ if (!cur_action)
+ return;
+
+ build_triggers_string(name_str, sizeof(name_str), cur_action);
+
+ INFO("processing action %p (%s)\n", cur_action, name_str);
+ cur_command = get_first_command(cur_action);
+ } else {
+ cur_command = get_next_command(cur_action, cur_command);
+ }
+
+ if (!cur_command)
+ return;
+
+ ret = cur_command->func(cur_command->nargs, cur_command->args);
+ if (klog_get_level() >= KLOG_INFO_LEVEL) {
+ for (i = 0; i < cur_command->nargs; i++) {
+ strlcat(cmd_str, cur_command->args[i], sizeof(cmd_str));
+ if (i < cur_command->nargs - 1) {
+ strlcat(cmd_str, " ", sizeof(cmd_str));
+ }
+ }
+ INFO("command '%s' action=%s status=%d (%s:%d)\n",
+ cmd_str, cur_action ? name_str : "", ret, cur_command->filename,
+ cur_command->line);
+ }
+}
+
+static int wait_for_coldboot_done_action(int nargs, char **args)
+{
+ int ret;
+ INFO("wait for %s\n", COLDBOOT_DONE);
+ ret = wait_for_file(COLDBOOT_DONE, COMMAND_RETRY_TIMEOUT);
+ if (ret)
+ ERROR("Timed out waiting for %s\n", COLDBOOT_DONE);
+ return ret;
+}
+
+/*
+ * 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(int nargs, char **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);
+ }
+ memset(buf, 0, sizeof(buf));
+ return result;
+}
+
+static int keychord_init_action(int nargs, char **args)
+{
+ keychord_init();
+ return 0;
+}
+
+static int console_init_action(int nargs, char **args)
+{
+ int fd;
+
+ if (console[0]) {
+ snprintf(console_name, sizeof(console_name), "/dev/%s", console);
+ }
+
+ fd = open(console_name, 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(char *name, int for_emulator)
+{
+ char *value = strchr(name, '=');
+ int name_len = strlen(name);
+
+ if (value == 0) return;
+ *value++ = 0;
+ if (name_len == 0) return;
+
+ if (for_emulator) {
+ /* in the emulator, export any kernel option with the
+ * ro.kernel. prefix */
+ char buff[PROP_NAME_MAX];
+ int len = snprintf( buff, sizeof(buff), "ro.kernel.%s", name );
+
+ if (len < (int)sizeof(buff))
+ property_set( buff, value );
+ return;
+ }
+
+ if (!strcmp(name,"qemu")) {
+ strlcpy(qemu, value, sizeof(qemu));
+ } else if (!strncmp(name, "androidboot.", 12) && name_len > 12) {
+ const char *boot_prop_name = name + 12;
+ char prop[PROP_NAME_MAX];
+ int cnt;
+
+ cnt = snprintf(prop, sizeof(prop), "ro.boot.%s", boot_prop_name);
+ if (cnt < PROP_NAME_MAX)
+ property_set(prop, value);
+ }
+}
+
+static void export_kernel_boot_props(void)
+{
+ char tmp[PROP_VALUE_MAX];
+ int ret;
+ unsigned i;
+ struct {
+ const char *src_prop;
+ const char *dest_prop;
+ const char *def_val;
+ } 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", },
+ };
+
+ for (i = 0; i < ARRAY_SIZE(prop_map); i++) {
+ ret = property_get(prop_map[i].src_prop, tmp);
+ if (ret > 0)
+ property_set(prop_map[i].dest_prop, tmp);
+ else
+ property_set(prop_map[i].dest_prop, prop_map[i].def_val);
+ }
+
+ ret = property_get("ro.boot.console", tmp);
+ if (ret)
+ strlcpy(console, tmp, sizeof(console));
+
+ /* save a copy for init's usage during boot */
+ property_get("ro.bootmode", tmp);
+ strlcpy(bootmode, tmp, sizeof(bootmode));
+
+ /* if this was given on kernel command line, override what we read
+ * before (e.g. from /proc/cpuinfo), if anything */
+ ret = property_get("ro.boot.hardware", tmp);
+ if (ret)
+ strlcpy(hardware, tmp, sizeof(hardware));
+ property_set("ro.hardware", hardware);
+
+ snprintf(tmp, PROP_VALUE_MAX, "%d", revision);
+ property_set("ro.revision", tmp);
+
+ /* TODO: these are obsolete. We should delete them */
+ 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");
+}
+
+static void process_kernel_cmdline(void)
+{
+ /* don't expose the raw commandline to nonpriv processes */
+ chmod("/proc/cmdline", 0440);
+
+ /* first pass does the common stuff, and finds if we are in qemu.
+ * second pass is only necessary for qemu to export all kernel params
+ * as props.
+ */
+ import_kernel_cmdline(0, import_kernel_nv);
+ if (qemu[0])
+ import_kernel_cmdline(1, import_kernel_nv);
+
+ /* now propogate the info given on command line to internal variables
+ * used by init as well as the current required properties
+ */
+ export_kernel_boot_props();
+}
+
+static int property_service_init_action(int nargs, char **args)
+{
+ /* 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();
+ if (get_property_set_fd() < 0) {
+ ERROR("start_property_service() failed\n");
+ exit(1);
+ }
+
+ return 0;
+}
+
+static int signal_init_action(int nargs, char **args)
+{
+ signal_init();
+ if (get_signal_fd() < 0) {
+ ERROR("signal_init() failed\n");
+ exit(1);
+ }
+ return 0;
+}
+
+static int queue_property_triggers_action(int nargs, char **args)
+{
+ queue_all_property_triggers();
+ /* enable property triggers */
+ property_triggers_enabled = 1;
+ return 0;
+}
+
+#if BOOTCHART
+static int bootchart_init_action(int nargs, char **args)
+{
+ 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");
+ }
+
+ return 0;
+}
+#endif
+
+void selinux_init_all_handles(void)
+{
+ sehandle = selinux_android_file_context_handle();
+ selinux_android_set_sehandle(sehandle);
+ sehandle_prop = selinux_android_prop_context_handle();
+}
+
+static bool selinux_is_disabled(void)
+{
+#ifdef ALLOW_DISABLE_SELINUX
+ char tmp[PROP_VALUE_MAX];
+
+ if (access("/sys/fs/selinux", F_OK) != 0) {
+ /* SELinux is not compiled into the kernel, or has been disabled
+ * via the kernel command line "selinux=0".
+ */
+ return true;
+ }
+
+ if ((property_get("ro.boot.selinux", tmp) != 0) && (strcmp(tmp, "disabled") == 0)) {
+ /* SELinux is compiled into the kernel, but we've been told to disable it. */
+ return true;
+ }
+#endif
+
+ return false;
+}
+
+static bool selinux_is_enforcing(void)
+{
+#ifdef ALLOW_DISABLE_SELINUX
+ char tmp[PROP_VALUE_MAX];
+
+ if (property_get("ro.boot.selinux", tmp) == 0) {
+ /* Property is not set. Assume enforcing */
+ return true;
+ }
+
+ if (strcmp(tmp, "permissive") == 0) {
+ /* SELinux is in the kernel, but we've been told to go into permissive mode */
+ return false;
+ }
+
+ if (strcmp(tmp, "enforcing") != 0) {
+ ERROR("SELinux: Unknown value of ro.boot.selinux. Got: \"%s\". Assuming enforcing.\n", tmp);
+ }
+
+#endif
+ return true;
+}
+
+int selinux_reload_policy(void)
+{
+ if (selinux_is_disabled()) {
+ return -1;
+ }
+
+ 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 __attribute__((unused)), char *buf, size_t len)
+{
+ snprintf(buf, len, "property=%s", !data ? "NULL" : (char *)data);
+ return 0;
+}
+
+int log_callback(int type, const char *fmt, ...)
+{
+ int level;
+ va_list ap;
+ switch (type) {
+ case SELINUX_WARNING:
+ level = KLOG_WARNING_LEVEL;
+ break;
+ case SELINUX_INFO:
+ level = KLOG_INFO_LEVEL;
+ break;
+ default:
+ level = KLOG_ERROR_LEVEL;
+ break;
+ }
+ va_start(ap, fmt);
+ klog_vwrite(level, fmt, ap);
+ va_end(ap);
+ return 0;
+}
+
+static void selinux_initialize(void)
+{
+ if (selinux_is_disabled()) {
+ return;
+ }
+
+ INFO("loading selinux policy\n");
+ if (selinux_android_load_policy() < 0) {
+ ERROR("SELinux: Failed to load policy; rebooting into recovery mode\n");
+ android_reboot(ANDROID_RB_RESTART2, 0, "recovery");
+ while (1) { pause(); } // never reached
+ }
+
+ selinux_init_all_handles();
+ bool is_enforcing = selinux_is_enforcing();
+ INFO("SELinux: security_setenforce(%d)\n", is_enforcing);
+ security_setenforce(is_enforcing);
+}
+
+int main(int argc, char **argv)
+{
+ int fd_count = 0;
+ struct pollfd ufds[4];
+ 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 | O_CLOEXEC, 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();
+
+ union selinux_callback cb;
+ cb.func_log = log_callback;
+ selinux_set_callback(SELINUX_CB_LOG, cb);
+
+ cb.func_audit = audit_callback;
+ selinux_set_callback(SELINUX_CB_AUDIT, cb);
+
+ selinux_initialize();
+ /* 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");
+ restorecon("/dev/__properties__");
+ restorecon_recursive("/sys");
+
+ is_charger = !strcmp(bootmode, "charger");
+
+ INFO("property init\n");
+ 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(mix_hwrng_into_linux_rng_action, "mix_hwrng_into_linux_rng");
+ 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);
+
+ /* Repeat mix_hwrng_into_linux_rng in case /dev/hw_random or /dev/random
+ * wasn't ready immediately after wait_for_coldboot_done
+ */
+ queue_builtin_action(mix_hwrng_into_linux_rng_action, "mix_hwrng_into_linux_rng");
+ queue_builtin_action(property_service_init_action, "property_service_init");
+ queue_builtin_action(signal_init_action, "signal_init");
+
+ /* Don't mount filesystems or start core system services if in charger mode. */
+ if (is_charger) {
+ action_for_each_trigger("charger", action_add_queue_tail);
+ } else {
+ action_for_each_trigger("late-init", 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) {
+ long long current_time;
+ int elapsed_time, remaining_time;
+
+ current_time = bootchart_gettime();
+ elapsed_time = current_time - bootchart_time;
+
+ if (elapsed_time >= BOOTCHART_POLLING_MS) {
+ /* count missed samples */
+ while (elapsed_time >= BOOTCHART_POLLING_MS) {
+ elapsed_time -= BOOTCHART_POLLING_MS;
+ bootchart_count--;
+ }
+ /* count may be negative, take a sample anyway */
+ bootchart_time = current_time;
+ if (bootchart_step() < 0 || bootchart_count <= 0) {
+ bootchart_finish();
+ bootchart_count = 0;
+ }
+ }
+ if (bootchart_count > 0) {
+ remaining_time = BOOTCHART_POLLING_MS - elapsed_time;
+ if (timeout < 0 || timeout > remaining_time)
+ timeout = remaining_time;
+ }
+ }
+#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;
+}