int mount_fstab_main(int argc, char *argv[])
{
int opt;
static struct option long_options[] = {
{"help", no_argument, 0, 'h'},
{0, 0, 0, 0}
};
int long_index = 0;
while ((opt = getopt_long(argc, argv, "h", long_options, &long_index)) != -1) {
switch (opt) {
case 'h':
mount_fstab_usage(0);
return EXIT_SUCCESS;
default:
mount_fstab_usage(1);
return EXIT_FAILURE;
}
}
// We only expect one argument
if (argc - optind != 1) {
mount_fstab_usage(1);
return EXIT_FAILURE;
}
// Use the kernel log since logcat hasn't run yet
util::log_set_logger(std::make_shared<util::KmsgLogger>());
// Patch SELinux policy
if (!patch_loaded_sepolicy()) {
LOGE("Failed to patch loaded SELinux policy. Continuing anyway");
} else {
LOGV("SELinux policy patching completed");
}
#if FORCE_SELINUX_PERMISSIVE
int fd = open("/sys/fs/selinux/enforce", O_RDWR);
if (fd > 0) {
write(fd, "0", 1);
close(fd);
}
#endif
if (!mount_fstab(argv[optind])) {
LOGE("Failed to mount filesystems. Rebooting into recovery");
reboot_directly("recovery");
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
static bool emergency_reboot()
{
util::vibrate(100, 150);
util::vibrate(100, 150);
util::vibrate(100, 150);
util::vibrate(100, 150);
util::vibrate(100, 150);
LOGW("--- EMERGENCY REBOOT FROM MBTOOL ---");
// Some devices don't have /proc/last_kmsg, so we'll attempt to save the
// kernel log to /data/media/0/MultiBoot/kernel.log
if (!util::is_mounted("/data")) {
LOGW("/data is not mounted. Attempting to mount /data");
struct stat sb;
// Try mounting /data in case we couldn't get through the fstab mounting
// steps. (This is an ugly brute force method...)
for (const char **ptr = data_block_devs; *ptr; ++ptr) {
const char *block_dev = *ptr;
if (stat(block_dev, &sb) < 0) {
continue;
}
if (mount(block_dev, "/data", "ext4", 0, "") == 0
|| mount(block_dev, "/data", "f2fs", 0, "") == 0) {
LOGW("Mounted %s at /data", block_dev);
break;
}
}
}
LOGW("Dumping kernel log to %s", MULTIBOOT_LOG_KERNEL);
// Remove old log
remove(MULTIBOOT_LOG_KERNEL);
// Write new log
util::mkdir_parent(MULTIBOOT_LOG_KERNEL, 0775);
dump_kernel_log(MULTIBOOT_LOG_KERNEL);
// Set file attributes on log file
fix_multiboot_permissions();
sync();
umount("/data");
// Does not return if successful
reboot_directly("recovery");
return false;
}