dev_t DirectVolume::getShareDevice() {
if (mPartIdx != -1) {
#ifdef VOLD_DISC_HAS_MULTIPLE_MAJORS
int major = getMajorNumberForBadPartition(mPartIdx);
if(major != -1) {
SLOGE("getShareDevice() returning correct major: %d, minor: %d", major, mPartMinors[mPartIdx - 1]);
return MKDEV(major, mPartMinors[mPartIdx - 1]);
}
else
#endif
return MKDEV(mDiskMajor, mPartIdx);
} else {
return MKDEV(mDiskMajor, mDiskMinor);
}
}
int VolumeManager::unmountAsec(const char *id, bool force) {
char asecFileName[255];
char mountPoint[255];
snprintf(asecFileName, sizeof(asecFileName), "%s/%s.asec", Volume::SEC_ASECDIR, id);
snprintf(mountPoint, sizeof(mountPoint), "%s/%s", Volume::ASECDIR, id);
char idHash[33];
if (!asecHash(id, idHash, sizeof(idHash))) {
SLOGE("Hash of '%s' failed (%s)", id, strerror(errno));
return -1;
}
return unmountLoopImage(id, idHash, asecFileName, mountPoint, force);
}
int NetlinkManager::stop()
{
if (mHandler->stop())
{
SLOGE("Unable to stop NetlinkHandler: %s", strerror(errno));
return -1;
}
delete mHandler;
mHandler = NULL;
close(mSock);
mSock = -1;
return 0;
}
static int load_qseecom_library()
{
const char *error = NULL;
if (loaded_library)
return loaded_library;
void * handle = dlopen(QSEECOM_LIBRARY_PATH, RTLD_NOW);
if(handle) {
dlerror(); /* Clear any existing error */
*(void **) (&qseecom_create_key) = dlsym(handle,"QSEECom_create_key");
if((error = dlerror()) == NULL) {
SLOGD("Success loading QSEECom_create_key \n");
*(void **) (&qseecom_update_key) = dlsym(handle,"QSEECom_update_key_user_info");
if ((error = dlerror()) == NULL) {
SLOGD("Success loading QSEECom_update_key_user_info\n");
*(void **) (&qseecom_wipe_key) = dlsym(handle,"QSEECom_wipe_key");
if ((error = dlerror()) == NULL) {
loaded_library = 1;
SLOGD("Success loading QSEECom_wipe_key \n");
}
else
SLOGE("Error %s loading symbols for QSEECom APIs \n", error);
}
else
SLOGE("Error %s loading symbols for QSEECom APIs \n", error);
}
} else {
SLOGE("Could not load libQSEEComAPI.so \n");
}
if(error)
dlclose(handle);
return loaded_library;
}
bool SocketClient::decRef() {
bool deleteSelf = false;
pthread_mutex_lock(&mRefCountMutex);
mRefCount--;
if (mRefCount == 0) {
deleteSelf = true;
} else if (mRefCount < 0) {
SLOGE("SocketClient refcount went negative!");
}
pthread_mutex_unlock(&mRefCountMutex);
if (deleteSelf) {
delete this;
}
return deleteSelf;
}
int main(int argc, char **argv) {
if (argc != 2 || argv[1][0] != '/') {
usage(argv[0]);
return -1;
}
SLOGD("Running: %s %s", argv[0], argv[1]);
std::string target(argv[1]);
destroy_key(target);
if (unlink(argv[1]) != 0 && errno != ENOENT) {
SLOGE("Unable to delete %s: %s",
argv[1], strerror(errno));
return -1;
}
return 0;
}
int SsServerDeleteFile(int sender_pid, const char* data_filepath, ssm_flag flag, const char* cookie, const char* group_id)
{
const char* in_filepath = data_filepath;
char out_filepath[MAX_FILENAME_LEN] = {0, };
//0. privilege check and get directory name
if(check_privilege(cookie, group_id) != 0)
{
SLOGE("[%s] permission denied\n", __func__);
return SS_PERMISSION_DENIED;
}
// 1. create out file name
ConvertFileName(sender_pid, out_filepath, in_filepath, flag, group_id);
// 2. delete designated file
if(unlink(out_filepath) != 0) // unlink fail?
{
SLOGE("[%s] error occured while deleting file\n", __func__);
return SS_FILE_WRITE_ERROR;
}
return 1;
}
int Volume::doUnmount(const char *path, bool force) {
int retries = 3;
int need_to_wait_count = 0;
bool need_to_wait = false;
bool isHotPlug = mVm->getHotPlug();
if (isHotPlug == true) {
retries = 5;
}
SLOGD("doUnmount: %s retries = %d, isHotPlug=%d", path, retries, isHotPlug);
if (mDebug) {
SLOGD("Unmounting {%s}, force = %d", path, force);
}
while (retries--) {
if (!umount(path) || errno == EINVAL || errno == ENOENT) {
SLOGI("%s sucessfully unmounted", path);
return 0;
}
int action = 0;
if (force) {
if (retries == 1) {
action = 2; // SIGKILL
} else if (retries == 2) {
action = 1; // SIGHUP
}
}
SLOGW("Failed to unmount %s (%s, retries %d, action %d)",
path, strerror(errno), retries, action);
Process::killProcessesWithOpenFiles(path, action);
if (retries > 0)
usleep(1000*1000);
if(isHotPlug && (retries == 1))
usleep(1000*1000);
}
errno = EBUSY;
SLOGE("Giving up on unmount %s (%s)", path, strerror(errno));
Process::FindProcessesWithOpenFiles(path);
return -1;
}
static int e4crypt_install_key(const ext4_encryption_key &ext4_key, const std::string &ref)
{
key_serial_t device_keyring = e4crypt_keyring();
SLOGI("Found device_keyring - id is %d", device_keyring);
key_serial_t key_id = add_key("logon", ref.c_str(),
(void*)&ext4_key, sizeof(ext4_key),
device_keyring);
if (key_id == -1) {
SLOGE("Failed to insert key into keyring with error %s",
strerror(errno));
return -1;
}
SLOGI("Added key %d (%s) to keyring %d in process %d",
key_id, ref.c_str(), device_keyring, getpid());
return 0;
}
void DirectVolume::handlePartitionAdded(const char *devpath, NetlinkEvent *evt) {
int major = atoi(evt->findParam("MAJOR"));
int minor = atoi(evt->findParam("MINOR"));
int part_num;
const char *tmp = evt->findParam("PARTN");
if (tmp) {
part_num = atoi(tmp);
} else {
SLOGW("Kernel block uevent missing 'PARTN'");
part_num = 1;
}
if (part_num > MAX_PARTITIONS || part_num < 1) {
SLOGW("Invalid 'PARTN' value");
part_num = 1;
}
if (part_num > mDiskNumParts) {
mDiskNumParts = part_num;
}
if (major != mDiskMajor) {
SLOGE("Partition '%s' has a different major than its disk!", devpath);
return;
}
#ifdef PARTITION_DEBUG
SLOGD("Dv:partAdd: part_num = %d, minor = %d\n", part_num, minor);
#endif
mPartMinors[part_num -1] = minor;
mPendingPartMap &= ~(1 << part_num);
if (!mPendingPartMap) {
#ifdef PARTITION_DEBUG
SLOGD("Dv:partAdd: Got all partitions - ready to rock!");
#endif
if (getState() != Volume::State_Formatting) {
setState(Volume::State_Idle);
}
} else {
#ifdef PARTITION_DEBUG
SLOGD("Dv:partAdd: pending mask now = 0x%x", mPendingPartMap);
#endif
}
}
// hunt down and kill processes that have files open on the given mount point
void killProcessesWithOpenFiles(const char *path, int action)
{
DIR *dir;
struct dirent *de;
if (!(dir = opendir("/proc"))) {
SLOGE("opendir failed (%s)", strerror(errno));
return;
}
while ((de = readdir(dir))) {
int pid = getPid(de->d_name);
char name[PATH_MAX];
if (pid == -1)
continue;
getProcessName(pid, name, sizeof(name));
char openfile[PATH_MAX];
if (checkfileDescriptorSymLinks
(pid, path, openfile, sizeof(openfile))) {
SLOGE("Process %s (%d) has open file %s", name, pid,
openfile);
} else if (checkfileMaps(pid, path, openfile, sizeof(openfile))) {
SLOGE("Process %s (%d) has open filemap for %s", name,
pid, openfile);
} else if (checkSymLink(pid, path, "cwd")) {
SLOGE("Process %s (%d) has cwd within %s", name, pid,
path);
} else if (checkSymLink(pid, path, "root")) {
SLOGE("Process %s (%d) has chroot within %s", name, pid,
path);
} else if (checkSymLink(pid, path, "exe")) {
SLOGE("Process %s (%d) has executable path within %s",
name, pid, path);
} else {
continue;
}
if (action == 1) {
SLOGW("Sending SIGHUP to process %d", pid);
kill(pid, SIGTERM);
} else if (action == 2) {
SLOGE("Sending SIGKILL to process %d", pid);
kill(pid, SIGKILL);
}
}
closedir(dir);
}
int VolumeManager::getAsecFilesystemPath(const char *id, char *buffer, int maxlen) {
char asecFileName[255];
if (findAsec(id, asecFileName, sizeof(asecFileName))) {
SLOGE("Couldn't find ASEC %s", id);
return -1;
}
memset(buffer, 0, maxlen);
if (access(asecFileName, F_OK)) {
errno = ENOENT;
return -1;
}
snprintf(buffer, maxlen, "%s", asecFileName);
return 0;
}
int VolumeManager::getObbMountPath(const char *sourceFile, char *mountPath, int mountPathLen) {
char idHash[33];
if (!asecHash(sourceFile, idHash, sizeof(idHash))) {
SLOGE("Hash of '%s' failed (%s)", sourceFile, strerror(errno));
return -1;
}
memset(mountPath, 0, mountPathLen);
snprintf(mountPath, mountPathLen, "%s/%s", Volume::LOOPDIR, idHash);
if (access(mountPath, F_OK)) {
errno = ENOENT;
return -1;
}
return 0;
}
// BLKSECDISCARD all content in "path", if it's small enough.
static void destroy_key(const std::string &path) {
uint64_t range[2];
if (file_device_range(path, range) < 0) {
return;
}
int fs_fd = open_block_device_for_path(path);
if (fs_fd < 0) {
return;
}
if (ioctl(fs_fd, BLKSECDISCARD, range) != 0) {
SLOGE("Unable to BLKSECDISCARD %s: %s", path.c_str(), strerror(errno));
close(fs_fd);
return;
}
close(fs_fd);
SLOGD("Discarded %s", path.c_str());
}
bool VolumeManager::isAsecInDirectory(const char *dir, const char *asecName) const {
int dirfd = open(dir, O_DIRECTORY);
if (dirfd < 0) {
SLOGE("Couldn't open internal ASEC dir (%s)", strerror(errno));
return -1;
}
bool ret = false;
if (!faccessat(dirfd, asecName, F_OK, AT_SYMLINK_NOFOLLOW)) {
ret = true;
}
close(dirfd);
return ret;
}
int IsDirExist(char* dirpath)
{
DIR* dp = NULL;
if((dp = opendir(dirpath)) == NULL) // dir is not exist
{
SLOGE("[%s] directory [%s] is not exist.\n", __func__, dirpath);
return 0; // return value '0' represents dir is not exist
}
else
{
closedir(dp);
return 1;
}
return -1;
}
bool LogAudit::onDataAvailable(SocketClient *cli) {
prctl(PR_SET_NAME, "logd.auditd");
struct audit_message rep;
rep.nlh.nlmsg_type = 0;
rep.nlh.nlmsg_len = 0;
rep.data[0] = '\0';
if (audit_get_reply(cli->getSocket(), &rep, GET_REPLY_BLOCKING, 0) < 0) {
SLOGE("Failed on audit_get_reply with error: %s", strerror(errno));
return false;
}
logPrint("type=%d %.*s", rep.nlh.nlmsg_type, rep.nlh.nlmsg_len, rep.data);
return true;
}
void Volume::protectFromAutorunStupidity() {
char filename[255];
snprintf(filename, sizeof(filename), "%s/autorun.inf", SEC_STGDIR);
if (!access(filename, F_OK)) {
SLOGW("Volume contains an autorun.inf! - removing");
/*
* Ensure the filename is all lower-case so
* the process killer can find the inode.
* Probably being paranoid here but meh.
*/
rename(filename, filename);
Process::killProcessesWithOpenFiles(filename, 2);
if (unlink(filename)) {
SLOGE("Failed to remove %s (%s)", filename, strerror(errno));
}
}
}
/* Should we use keymaster? */
static int keymaster_check_compatibility_old()
{
keymaster0_device_t *keymaster0_dev = 0;
keymaster1_device_t *keymaster1_dev = 0;
int rc = 0;
if (keymaster_init(&keymaster0_dev, &keymaster1_dev)) {
SLOGE("Failed to init keymaster");
rc = -1;
goto out;
}
if (keymaster1_dev) {
rc = 1;
goto out;
}
if (!keymaster0_dev || !keymaster0_dev->common.module) {
rc = -1;
goto out;
}
// TODO(swillden): Check to see if there's any reason to require v0.3. I think v0.1 and v0.2
// should work.
if (keymaster0_dev->common.module->module_api_version
< KEYMASTER_MODULE_API_VERSION_0_3) {
rc = 0;
goto out;
}
if (!(keymaster0_dev->flags & KEYMASTER_SOFTWARE_ONLY) &&
(keymaster0_dev->flags & KEYMASTER_BLOBS_ARE_STANDALONE)) {
rc = 1;
}
out:
if (keymaster1_dev) {
keymaster1_close(keymaster1_dev);
}
if (keymaster0_dev) {
keymaster0_close(keymaster0_dev);
}
return rc;
}
int VolumeManager::listMountedObbs(SocketClient* cli) {
char device[256];
char mount_path[256];
char rest[256];
FILE *fp;
char line[1024];
if (!(fp = fopen("/proc/mounts", "r"))) {
SLOGE("Error opening /proc/mounts (%s)", strerror(errno));
return -1;
}
// Create a string to compare against that has a trailing slash
int loopDirLen = strlen(Volume::LOOPDIR);
char loopDir[loopDirLen + 2];
strcpy(loopDir, Volume::LOOPDIR);
loopDir[loopDirLen++] = '/';
loopDir[loopDirLen] = '\0';
while(fgets(line, sizeof(line), fp)) {
line[strlen(line)-1] = '\0';
/*
* Should look like:
* /dev/block/loop0 /mnt/obb/fc99df1323fd36424f864dcb76b76d65 ...
*/
sscanf(line, "%255s %255s %255s\n", device, mount_path, rest);
if (!strncmp(mount_path, loopDir, loopDirLen)) {
int fd = open(device, O_RDONLY);
if (fd >= 0) {
struct loop_info64 li;
if (ioctl(fd, LOOP_GET_STATUS64, &li) >= 0) {
cli->sendMsg(ResponseCode::AsecListResult,
(const char*) li.lo_file_name, false);
}
close(fd);
}
}
}
fclose(fp);
return 0;
}
// Given a file path, look for the corresponding
// block device in /proc/mounts and open it.
static int open_block_device_for_path(const std::string &path)
{
std::string mountsfile("/proc/mounts");
std::string mounts;
if (read_file_as_string_atomically(mountsfile, mounts) < 0) {
return -1;
}
std::string block_device;
if (find_block_device_for_path(mounts, path, block_device) < 0) {
return -1;
}
SLOGD("For path %s block device is %s", path.c_str(), block_device.c_str());
int res = open(block_device.c_str(), O_RDWR | O_LARGEFILE | O_CLOEXEC);
if (res < 0) {
SLOGE("Failed to open device %s: %s", block_device.c_str(), strerror(errno));
return -1;
}
return res;
}
int Volume::formatVol() {
if (getState() == Volume::State_NoMedia) {
errno = ENODEV;
return -1;
} else if (getState() != Volume::State_Idle) {
errno = EBUSY;
return -1;
}
if (isMountpointMounted(getMountpoint())) {
SLOGW("Volume is idle but appears to be mounted - fixing");
setState(Volume::State_Mounted);
// mCurrentlyMountedKdev = XXX
errno = EBUSY;
return -1;
}
// Just format one partition but not the whole disk
if (devicePath[0] == 0)
{
dev_t diskNode = getDiskDevice();
dev_t partNode = MKDEV(MAJOR(diskNode), 1); // XXX: Hmmm
sprintf(devicePath, "/dev/block/vold/%d:%d",
MAJOR(diskNode), MINOR(diskNode));
}
if (mDebug) {
SLOGI("Formatting volume %s (%s)", getLabel(), devicePath);
}
setState(Volume::State_Formatting);
if (Fat::format(devicePath, 0)) {
SLOGE("Failed to format (%s)", strerror(errno));
goto err;
}
setState(Volume::State_Idle);
return 0;
err:
return -1;
}
char* get_preserved_dir()
{
FILE* fp_conf = NULL;
char buf[128];
char* retbuf = NULL;
char seps[] = " :\n\r\t";
char* token = NULL;
retbuf = (char*)malloc(sizeof(char) * 128);
memset(buf, 0x00, 128);
memset(retbuf, 0x00, 128);
if(!(fp_conf = fopen(CONF_FILE_PATH, "r")))
{
SLOGE("[%s] Configuration file is not exist\n", __func__);
free(retbuf);
return NULL;
}
while(fgets(buf, 128, fp_conf))
{
token = strtok(buf, seps);
if(!strncmp(token, "PRESERVE_DIR", 12)) // preserve directory?
{
token = strtok(NULL, seps); // real path
break;
}
token = NULL;
}
fclose(fp_conf);
if(token)
strncpy(retbuf, token, 127);
else {
if(retbuf != NULL)
free(retbuf);
return NULL;
}
return retbuf;
}
/* This signs the given object using the keymaster key. */
static int keymaster_sign_object_new(struct crypt_mnt_ftr *ftr,
const unsigned char *object,
const size_t object_size,
unsigned char **signature,
size_t *signature_size)
{
unsigned char to_sign[RSA_KEY_SIZE_BYTES];
size_t to_sign_size = sizeof(to_sign);
memset(to_sign, 0, RSA_KEY_SIZE_BYTES);
// To sign a message with RSA, the message must satisfy two
// constraints:
//
// 1. The message, when interpreted as a big-endian numeric value, must
// be strictly less than the public modulus of the RSA key. Note
// that because the most significant bit of the public modulus is
// guaranteed to be 1 (else it's an (n-1)-bit key, not an n-bit
// key), an n-bit message with most significant bit 0 always
// satisfies this requirement.
//
// 2. The message must have the same length in bits as the public
// modulus of the RSA key. This requirement isn't mathematically
// necessary, but is necessary to ensure consistency in
// implementations.
switch (ftr->kdf_type) {
case KDF_SCRYPT_KEYMASTER:
// This ensures the most significant byte of the signed message
// is zero. We could have zero-padded to the left instead, but
// this approach is slightly more robust against changes in
// object size. However, it's still broken (but not unusably
// so) because we really should be using a proper deterministic
// RSA padding function, such as PKCS1.
memcpy(to_sign + 1, object, min(RSA_KEY_SIZE_BYTES - 1, object_size));
SLOGI("Signing safely-padded object");
break;
default:
SLOGE("Unknown KDF type %d", ftr->kdf_type);
return -1;
}
return keymaster_sign_object_for_cryptfs_scrypt(ftr->keymaster_blob, ftr->keymaster_blob_size,
KEYMASTER_CRYPTFS_RATE_LIMIT, to_sign, to_sign_size, signature, signature_size);
}
int main(void)
{
/* Library initialization. Must be called only once. */
SLOG_Init(SLOG_STDERR, "example02-log.txt");
/* Setting log levels: all messages to console and all to the file.
* Default settings are: all messages to file and >= INFO to console. */
SLOG_SetLevel(SLOG_DEBUG, SLOG_DEBUG);
SLOGD(TAG, "debug message");
SLOGI(TAG, "info");
SLOGW(TAG, "warning");
SLOGE(TAG, "error");
SLOGI(TAG, "formatted message (%d, %s)", 123, "bar");
/* Library deinitialization. */
SLOG_Deinit();
return 0;
}
bool NotificationManager::onDataAvailable(NuSocketClient *cli)
{
int socket = cli->getSocket();
ssize_t count;
count = TEMP_FAILURE_RETRY(read(socket, mBuffer, sizeof(mBuffer)));
if (count < 0 || count > 4) {
SLOGE("recvmsg failed (%s)", strerror(errno));
return false;
} else if (count == 0){
LOGD("count = 0, client closed!");
return false;
}
int *value = (int *)&mBuffer[0];
onCommand(*value);
return true;
}
int Ext::format(const char *fsPath) {
int fd;
const char *args[3];
int rc;
args[0] = MKEXTFS_PATH;
args[1] = fsPath;
args[2] = NULL;
rc = logwrap(3, args, 1);
if (rc == 0) {
SLOGI("Filesystem formatted OK");
return 0;
} else {
SLOGE("Format failed (unknown exit code %d)", rc);
errno = EIO;
return -1;
}
return 0;
}
int main (int argc, char* argv[]) {
int ret;
if (argc != 2) {
fprintf(stderr, "Usage: %s <flush-frequency-in-seconds>\n", argv[0]);
ret = -1;
} else {
hw_module_t* module;
ret = hw_get_module(MRKNLOG_HARDWARE_MODULE_ID, (hw_module_t const**)&module);
if (ret == 0) {
struct mrknlog_device_t *dev;
ret = module->methods->open(module, 0, (struct hw_device_t **) &dev);
if (ret == 0) {
int frequency = atoi(argv[1]);
int totalSize = dev->get_total_log_size(dev);
int usedSize;
int count = 1;
while(runFlag) {
usedSize = dev->get_used_log_size(dev);
if (dev->flush_log(dev) == 0) {
SLOGI("Flushed log (%d, %d of %d bytes). Waiting %d seconds before the next flush.",
count, usedSize, totalSize, frequency);
} else {
SLOGE("Failed to flush log. Bailing out");
break;
}
count++;
sleep(frequency);
}
SLOGI("Done after %d iterations.", count);
dev->common.close((struct hw_device_t *)dev);
} else {
fprintf(stderr, "Failed to open device: %d", ret);
ret = -2;
}
} else {
fprintf(stderr, "Failed to get module: %s", MRKNLOG_HARDWARE_MODULE_ID);
ret = -3;
}
}
return ret;
}
int VolumeManager::mkdirs(char* path) {
// Require that path lives under a volume we manage
const char* emulated_source = getenv("EMULATED_STORAGE_SOURCE");
const char* root = NULL;
if (emulated_source && !strncmp(path, emulated_source, strlen(emulated_source))) {
root = emulated_source;
} else {
Volume* vol = getVolumeForFile(path);
if (vol) {
root = vol->getMountpoint();
}
}
if (!root) {
SLOGE("Failed to find volume for %s", path);
return -EINVAL;
}
/* fs_mkdirs() does symlink checking and relative path enforcement */
return fs_mkdirs(path, 0700);
}
bool FrameworkListener::onDataAvailable(SocketClient *c) {
char buffer[255];
int len;
if ((len = read(c->getSocket(), buffer, sizeof(buffer) -1)) < 0) {
SLOGE("read() failed (%s)", strerror(errno));
return false;
} else if (!len)
return false;
int offset = 0;
int i;
for (i = 0; i < len; i++) {
if (buffer[i] == '\0') {
dispatchCommand(c, buffer + offset);
offset = i + 1;
}
}
return true;
}
