int main(int argc, char *argv[])
{
struct libmnt_context *cxt;
int rc;
mnt_init_debug(0);
cxt = mnt_new_context();
if (!cxt) {
nfs_error(_("Can't initilize libmount: %s"),
strerror(errno));
rc = EX_FAIL;
goto done;
}
progname = basename(argv[0]);
nfs_mount_data_version = discover_nfs_mount_data_version(&string);
if(strncmp(progname, "umount", 6) == 0)
rc = umount_main(cxt, argc, argv);
else
rc = mount_main(cxt, argc, argv);
done:
mnt_free_context(cxt);
return rc;
}
int main(int argc, char** argv) {
char* hijacked_executable = argv[0];
struct stat info;
if (NULL != strstr(hijacked_executable, "hijack")) {
// no op
if (argc >= 2) {
if (strcmp("sh", argv[1]) == 0) {
return ash_main(argc - 1, argv + 1);
}
if (strcmp("mount", argv[1]) == 0) {
return mount_main(argc - 1, argv + 1);
}
if (strcmp("umount", argv[1]) == 0) {
return umount_main(argc - 1, argv + 1);
}
}
return 0;
}
// check to see if hijack was already run, and if so, just continue on.
if (argc >= 3 && 0 == strcmp(argv[2], "preinstall")) {
if (0 == stat(RECOVERY_MODE_FILE, &info)) {
// don't boot into recovery again
remove(RECOVERY_MODE_FILE);
remount_root();
mkdir("/tmp", S_IRWXU);
mkdir("/res", S_IRWXU);
mkdir("/res/images", S_IRWXU);
remove("/etc");
mkdir("/etc", S_IRWXU);
rename("/sbin/adbd", "/sbin/adbd.old");
property_set("ctl.stop", "runtime");
property_set("ctl.stop", "zygote");
property_set("persist.service.adb.enable", "1");
// this will prevent hijack from being called again
char* umount_args[] = { "/system/bin/hijack", "umount", "-l", "/system", NULL };
exec_and_wait(umount_args);
char* updater_args[] = { UPDATE_BINARY, "2", "0", UPDATE_PACKAGE, NULL };
return exec_and_wait(updater_args);
}
// mark it in case we don't boot
mark_file(RECOVERY_MODE_FILE);
}
char real_executable[PATH_MAX];
sprintf(real_executable, "%s.bin", hijacked_executable);
string* argp = (string*)malloc(sizeof(string) * (argc + 1));
int i;
for (i = 0; i < argc; i++) {
argp[i]=argv[i];
}
argp[argc] = NULL;
argp[0] = real_executable;
// should clean up memory leaks, but it really doesn't matter since the process immediately exits.
return exec_and_wait(argp);
}