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));
}
}
}
void NetlinkHandler::onEvent(NetlinkEvent *evt) {
VolumeManager *vm = VolumeManager::Instance();
const char *subsys = evt->getSubsystem();
if (!subsys) {
SLOGW("No subsystem found in netlink event");
return;
}
if (!strcmp(subsys, "block")) {
vm->handleBlockEvent(evt);
}
#if defined(BOARD_USES_HDMI) || defined(S5P_BOARD_USES_HDMI)
else if ((!strcmp(subsys, "misc")) || (!strcmp(subsys, "video4linux"))) {
vm->handleMiscEvent(evt);
}
#endif
}
int Ext::check(const char *fsPath) {
bool rw = true;
if (access(FSCK_EXT_PATH, X_OK)) {
SLOGW("Skipping fs checks\n");
return 0;
}
int pass = 1;
int rc = 0;
do {
const char *args[5];
args[0] = FSCK_EXT_PATH;
args[1] = "-p";
args[2] = "-f";
args[3] = fsPath;
args[4] = NULL;
rc = logwrap(4, args, 1);
switch(rc) {
case 0:
case 1:
SLOGI("Filesystem check completed OK");
return 0;
case 2:
SLOGE("Filesystem check completed, system should be rebooted");
errno = ENODATA;
return -1;
case 4:
SLOGE("Filesystem errors left uncorrected");
errno = EIO;
return -1;
default:
SLOGE("Filesystem check failed (exit code %d)", rc);
errno = EIO;
return -1;
}
} while (0);
return 0;
}
void NetlinkHandler::onEvent(NetlinkEvent *evt) {
VolumeManager *vm = VolumeManager::Instance();
const char *subsys = evt->getSubsystem();
if (!subsys) {
SLOGW("No subsystem found in netlink event");
return;
}
if (!strcmp(subsys, "block")) {
vm->handleBlockEvent(evt);
} else if (!strcmp(subsys, "switch")) {
vm->handleSwitchEvent(evt);
} else if (!strcmp(subsys, "usb_composite")) {
vm->handleUsbCompositeEvent(evt);
} else if (!strcmp(subsys, "battery")) {
} else if (!strcmp(subsys, "power_supply")) {
}
}
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;
}
// hunt down and kill processes that have files open on the given mount point
void Process::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 killed = 0;
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);
}
void DirectVolume::handleDiskAdded(const char *devpath, NetlinkEvent *evt) {
mDiskMajor = atoi(evt->findParam("MAJOR"));
mDiskMinor = atoi(evt->findParam("MINOR"));
if(first_udisk_major==-1&&first_udisk_minor==-1){
SLOGD("first udisk add\n");
first_udisk_major = mDiskMajor;
first_udisk_minor = mDiskMinor;
}else{
SLOGD("not first udisk add\n");
return ;
}
const char *tmp = evt->findParam("NPARTS");
if (tmp) {
mDiskNumParts = atoi(tmp);
} else {
SLOGW("Kernel block uevent missing 'NPARTS'");
mDiskNumParts = 1;
}
int partmask = 0;
int i;
for (i = 1; i <= mDiskNumParts; i++) {
partmask |= (1 << i);
}
mPendingPartMap = partmask;
if (mDiskNumParts == 0) {
#ifdef PARTITION_DEBUG
SLOGD("Dv::diskIns - No partitions - good to go son!");
#endif
setState(Volume::State_Idle);
} else {
#ifdef PARTITION_DEBUG
SLOGD("Dv::diskIns - waiting for %d partitions (mask 0x%x)",
mDiskNumParts, mPendingPartMap);
#endif
setState(Volume::State_Pending);
}
}
void DirectVolume::handleDiskAdded(const char *devpath, NetlinkEvent *evt) {
mDiskMajor = atoi(evt->findParam("MAJOR"));
mDiskMinor = atoi(evt->findParam("MINOR"));
const char *tmp = evt->findParam("NPARTS");
if (tmp) {
mDiskNumParts = atoi(tmp);
} else {
SLOGW("Kernel block uevent missing 'NPARTS'");
mDiskNumParts = 1;
}
char msg[255];
/* int partmask = 0;
int i;
for (i = 1; i <= mDiskNumParts; i++) {
partmask |= (1 << i);
} */
mPendingPartNum = mDiskNumParts;
for (int i = 0; i < MAX_PARTITIONS; i++)
mPartMinors[i] = -1;
if (mDiskNumParts == 0) {
#ifdef PARTITION_DEBUG
SLOGD("Dv::diskIns - No partitions - good to go son!");
#endif
setState(Volume::State_Idle);
} else {
#ifdef PARTITION_DEBUG
SLOGD("Dv::diskIns - waiting for %d partitions (pending partitions: %d)",
mDiskNumParts, mPendingPartNum);
#endif
setState(Volume::State_Pending);
}
if(mVm->getIpoState() == VolumeManager::State_Ipo_Start) {
snprintf(msg, sizeof(msg), "Volume %s %s disk inserted (%d:%d)",
getLabel(), getMountpoint(), mDiskMajor, mDiskMinor);
mVm->getBroadcaster()->sendBroadcast(ResponseCode::VolumeDiskInserted,
msg, false);
}
}
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 > 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
}
}
void DirectVolume::handleDiskAdded(const char *devpath, NetlinkEvent *evt) {
mDiskMajor = atoi(evt->findParam("MAJOR"));
mDiskMinor = atoi(evt->findParam("MINOR"));
const char *tmp = evt->findParam("NPARTS");
if (tmp) {
mDiskNumParts = atoi(tmp);
} else {
SLOGW("Kernel block uevent missing 'NPARTS'");
mDiskNumParts = 1;
}
if (strcmp(devpath, "/devices/virtual/block/stheno") == 0)
mDiskNumParts = 0;
char msg[255];
int partmask = 0;
int i;
for (i = 1; i <= mDiskNumParts; i++) {
partmask |= (1 << i);
}
mPendingPartMap = partmask;
if (mDiskNumParts == 0) {
#ifdef PARTITION_DEBUG
SLOGD("Dv::diskIns - No partitions - good to go son!");
#endif
setState(Volume::State_Idle);
} else {
#ifdef PARTITION_DEBUG
SLOGD("Dv::diskIns - waiting for %d partitions (mask 0x%x)",
mDiskNumParts, mPendingPartMap);
#endif
setState(Volume::State_Pending);
}
snprintf(msg, sizeof(msg), "Volume %s %s disk inserted (%d:%d)",
getLabel(), getMountpoint(), mDiskMajor, mDiskMinor);
mVm->getBroadcaster()->sendBroadcast(ResponseCode::VolumeDiskInserted,
msg, false);
}
int Exfat::doMount(const char *fsPath, const char *mountPoint, bool ro, bool remount, bool executable, int ownerUid, int ownerGid, int permMask, bool ISVfat) {
int rc;
unsigned long flags;
char mountData[255];
bool isexecutable = executable;
/*
* Note: This is a temporary hack. If the sampling profiler is enabled,
* we make the SD card world-writable so any process can write snapshots.
*
* TODO: Remove this code once we have a drop box in system_server.
*/
char value[PROPERTY_VALUE_MAX];
property_get("ro.vold.permissivefs", value, "");
if (value[0] == '1') {
SLOGW("The SD card is world-writable because the"
" 'persist.sampling_profiler' system property is set to '1'.");
permMask = 0;
isexecutable = true;
}
flags = MS_NODEV | MS_NOSUID | MS_DIRSYNC;
flags |= (isexecutable ? 0 : MS_NOEXEC);
flags |= (ro ? MS_RDONLY : 0);
flags |= (remount ? MS_REMOUNT : 0);
sprintf(mountData, "utf8,uid=%d,gid=%d,fmask=%o,dmask=%o", ownerUid, ownerGid, permMask, permMask);
if(ISVfat == true)
{
rc = mount(fsPath, mountPoint, "vfat", flags, mountData);
}
else
{
rc = mount(fsPath, mountPoint, "texfat", flags, mountData);
}
if (rc !=0 && ISVfat == false) {
rc = mount(fsPath, mountPoint, "exfat", flags, mountData);
}
return rc;
}
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;
}
int Exfat::doMount(const char *fsPath, const char *mountPoint,
bool ro, bool remount, bool executable,
int ownerUid, int ownerGid, int permMask) {
int rc = -1;
char mountData[255];
const char *args[6];
int status;
if (access(EXFAT_MOUNT, X_OK)) {
SLOGE("Unable to mount, exFAT FUSE helper not found!");
return rc;
}
sprintf(mountData,
"noatime,nodev,nosuid,dirsync,uid=%d,gid=%d,fmask=%o,dmask=%o,%s,%s",
ownerUid, ownerGid, permMask, permMask,
(executable ? "exec" : "noexec"),
(ro ? "ro" : "rw"));
args[0] = EXFAT_MOUNT;
args[1] = "-o";
args[2] = mountData;
args[3] = fsPath;
args[4] = mountPoint;
args[5] = NULL;
SLOGW("Executing exFAT mount (%s) -> (%s)", fsPath, mountPoint);
rc = android_fork_execvp(ARRAY_SIZE(args), (char **)args, &status, false,
true);
if (rc && errno == EROFS) {
SLOGE("%s appears to be a read only filesystem - retrying mount RO", fsPath);
strcat(mountData, ",ro");
rc = android_fork_execvp(ARRAY_SIZE(args), (char **)args, &status, false,
true);
}
return rc;
}
void Volume::setState(int state) {
char msg[255];
int oldState = mState;
if (oldState == state) {
SLOGW("Duplicate state (%d)\n", state);
return;
}
mState = state;
SLOGD("Volume %s state changing %d (%s) -> %d (%s)", mLabel,
oldState, stateToStr(oldState), mState, stateToStr(mState));
snprintf(msg, sizeof(msg),
"Volume %s %s state changed from %d (%s) to %d (%s)", getLabel(),
getMountpoint(), oldState, stateToStr(oldState), mState,
stateToStr(mState));
mVm->getBroadcaster()->sendBroadcast(ResponseCode::VolumeStateChange,
msg, false);
}
void DirectVolume::udiskSetState(int state,int index,char * mountpoint) {
char msg[255];
int mState = 0;
int oldState = mState;
if(state == State_Idle){
oldState = State_Unmounting;
}
if(state == State_Unmounting){
oldState = State_Mounted;
}
if(state == State_NoMedia){
oldState = State_Idle;
}
if (oldState == state) {
SLOGW("Duplicate state (%d)\n", state);
return;
}
if ((oldState == Volume::State_Pending) && (state != Volume::State_Idle)) {
mRetryMount = false;
}
mState = state;
SLOGD("Volume Udisk%d path %s state changing %d (%s) -> %d (%s)", index,mountpoint,
oldState, stateToStr(oldState), mState, stateToStr(mState));
snprintf(msg, sizeof(msg),
"Volume Udisk%d %s state changed from %d (%s) to %d (%s)", index,
mountpoint, oldState, stateToStr(oldState), mState,
stateToStr(mState));
mVm->getBroadcaster()->sendBroadcast(ResponseCode::VolumeStateChange,
msg, false);
}
void VolumeManager::handleBlockEvent(NetlinkEvent *evt) {
const char *devpath = evt->findParam("DEVPATH");
/* Lookup a volume to handle this device */
VolumeCollection::iterator it;
bool hit = false;
for (it = mVolumes->begin(); it != mVolumes->end(); ++it) {
if (!(*it)->handleBlockEvent(evt)) {
#ifdef NETLINK_DEBUG
SLOGD("Device '%s' event handled by volume %s\n", devpath, (*it)->getLabel());
#endif
hit = true;
break;
}
}
if (!hit) {
#ifdef NETLINK_DEBUG
SLOGW("No volumes handled block event for '%s'", devpath);
#endif
}
}
int usbset(int index,int cmd)
{
bool rw = true;
if (access(USBPOWER_PATH, X_OK)) {
SLOGW("No USBPOWER_PATH file\n");
return -1;
}
int rc = 0;
do {
const char *args[4];
args[0] = USBPOWER_PATH;
args[1] = usb_index_str[index];
args[2] = usb_state_str[cmd];
args[3] = NULL;
rc = logwrap(3, args, 1);
} while (0);
return rc;
}
void PhoneMachine::Request(const sp<IPhoneClient>& client, int token, int message, int ivalue, const String16& svalue)
{
SLOGV("Client request: token=%d message=%d ivalue=%d\n", token, message, ivalue);
RILRequest *request = new RILRequest(client, token, message);
switch(message) {
case RIL_REQUEST_GET_SIM_STATUS: break;
case RIL_REQUEST_GET_CURRENT_CALLS: break;
case RIL_REQUEST_DIAL:
request->writeString(svalue);
request->writeInt(0); // CLIR: Use subscription default value
request->writeInt(0); // UUS information is absent
request->writeInt(0); // UUS information is absent
break;
case RIL_REQUEST_HANGUP:
request->writeInt(1);
request->writeInt(ivalue); // This is really the GSM index
break;
case RIL_REQUEST_SIGNAL_STRENGTH: break;
#if defined(SHORT_PLATFORM_VERSION) && (SHORT_PLATFORM_VERSION == 23)
#else
case RIL_REQUEST_VOICE_REGISTRATION_STATE: break;
#endif
case RIL_REQUEST_OPERATOR: break;
case RIL_REQUEST_ANSWER: break;
case RIL_REQUEST_UDUB: break;
case RIL_REQUEST_SET_MUTE:
request->writeInt(1);
request->writeInt(ivalue ? 1 : 0);
break;
case RIL_REQUEST_GET_MUTE: break;
default:
SLOGW("Unrecognized request %d\n", message);
// ### TODO: Put in an error code here and send the message back
break;
}
sendToRILD(request);
}
static int initCtx(uid_t uid, int pid, struct ctx *ctx)
{
int ret;
char path[PROCESSGROUP_MAX_PATH_LEN] = {0};
convertUidPidToPath(path, sizeof(path), uid, pid);
strlcat(path, PROCESSGROUP_CGROUP_PROCS_FILE, sizeof(path));
int fd = open(path, O_RDONLY);
if (fd < 0) {
ret = -errno;
SLOGW("failed to open %s: %s", path, strerror(errno));
return ret;
}
ctx->fd = fd;
ctx->buf_ptr = ctx->buf;
ctx->buf_len = 0;
ctx->initialized = true;
SLOGV("Initialized context for %s", path);
return 0;
}
int VolumeManager::unmountVolume(const char *label, bool force, bool revert) {
Volume *v = lookupVolume(label);
if (!v) {
errno = ENOENT;
return -1;
}
if (v->getState() == Volume::State_NoMedia) {
errno = ENODEV;
return -1;
}
if (v->getState() != Volume::State_Mounted) {
SLOGW("Attempt to unmount volume which isn't mounted (%d)\n",
v->getState());
errno = EBUSY;
return UNMOUNT_NOT_MOUNTED_ERR;
}
cleanupAsec(v, force);
return v->unmountVol(force, revert);
}
int VolumeManager::renameAsec(const char *id1, const char *id2) {
char asecFilename1[255];
char *asecFilename2;
char mountPoint[255];
const char *dir;
if (!isLegalAsecId(id1)) {
SLOGE("renameAsec: Invalid asec id1 \"%s\"", id1);
errno = EINVAL;
return -1;
}
if (!isLegalAsecId(id2)) {
SLOGE("renameAsec: Invalid asec id2 \"%s\"", id2);
errno = EINVAL;
return -1;
}
if (findAsec(id1, asecFilename1, sizeof(asecFilename1), &dir)) {
SLOGE("Couldn't find ASEC %s", id1);
return -1;
}
asprintf(&asecFilename2, "%s/%s.asec", dir, id2);
int written = snprintf(mountPoint, sizeof(mountPoint), "%s/%s", Volume::ASECDIR, id1);
if ((written < 0) || (size_t(written) >= sizeof(mountPoint))) {
SLOGE("Rename failed: couldn't construct mountpoint");
goto out_err;
}
if (isMountpointMounted(mountPoint)) {
SLOGW("Rename attempt when src mounted");
errno = EBUSY;
goto out_err;
}
written = snprintf(mountPoint, sizeof(mountPoint), "%s/%s", Volume::ASECDIR, id2);
if ((written < 0) || (size_t(written) >= sizeof(mountPoint))) {
SLOGE("Rename failed: couldn't construct mountpoint2");
goto out_err;
}
if (isMountpointMounted(mountPoint)) {
SLOGW("Rename attempt when dst mounted");
errno = EBUSY;
goto out_err;
}
if (!access(asecFilename2, F_OK)) {
SLOGE("Rename attempt when dst exists");
errno = EADDRINUSE;
goto out_err;
}
if (rename(asecFilename1, asecFilename2)) {
SLOGE("Rename of '%s' to '%s' failed (%s)", asecFilename1, asecFilename2, strerror(errno));
goto out_err;
}
free(asecFilename2);
return 0;
out_err:
free(asecFilename2);
return -1;
}
int Fat::check(const char *fsPath) {
bool rw = true;
if (access(FSCK_MSDOS_PATH, X_OK)) {
SLOGW("Skipping fs checks\n");
return 0;
}
int pass = 1;
int rc = 0;
do {
const char *args[4];
int status;
args[0] = FSCK_MSDOS_PATH;
args[1] = "-p";
args[2] = "-f";
args[3] = fsPath;
rc = android_fork_execvp(ARRAY_SIZE(args), (char **)args, &status,
false, true);
if (rc != 0) {
SLOGE("Filesystem check failed due to logwrap error");
errno = EIO;
return -1;
}
if (!WIFEXITED(status)) {
SLOGE("Filesystem check did not exit properly");
errno = EIO;
return -1;
}
status = WEXITSTATUS(status);
switch(status) {
case 0:
SLOGI("Filesystem check completed OK");
return 0;
case 2:
SLOGE("Filesystem check failed (not a FAT filesystem)");
errno = ENODATA;
return -1;
case 4:
if (pass++ <= 3) {
SLOGW("Filesystem modified - rechecking (pass %d)",
pass);
continue;
}
SLOGE("Failing check after too many rechecks");
errno = EIO;
return -1;
default:
SLOGE("Filesystem check failed (unknown exit code %d)", status);
errno = EIO;
return -1;
}
} while (0);
return 0;
}
int Fat::doMount(const char *fsPath, const char *mountPoint,
bool ro, bool remount, bool executable,
int ownerUid, int ownerGid, int permMask, bool createLost)
{
int rc;
unsigned long flags;
char mountData[255];
flags = MS_NODEV | MS_NOSUID | MS_DIRSYNC;
flags |= (executable ? 0 : MS_NOEXEC);
flags |= (ro ? MS_RDONLY : 0);
flags |= (remount ? MS_REMOUNT : 0);
/*
* Note: This is a temporary hack. If the sampling profiler is enabled,
* we make the SD card world-writable so any process can write snapshots.
*
* TODO: Remove this code once we have a drop box in system_server.
*/
char value[PROPERTY_VALUE_MAX];
property_get("persist.sampling_profiler", value, "");
if (value[0] == '1')
{
SLOGW("The SD card is world-writable because the"
" 'persist.sampling_profiler' system property is set to '1'.");
permMask = 0;
}
sprintf(mountData,
"utf8,uid=%d,gid=%d,fmask=%o,dmask=%o,shortname=mixed",
ownerUid, ownerGid, permMask, permMask);
rc = mount(fsPath, mountPoint, "vfat", flags, mountData);
if (rc && errno == EROFS)
{
SLOGE("%s appears to be a read only filesystem - retrying mount RO", fsPath);
flags |= MS_RDONLY;
rc = mount(fsPath, mountPoint, "vfat", flags, mountData);
}
if (rc == 0 && createLost)
{
char *lost_path;
asprintf(&lost_path, "%s/LOST.DIR", mountPoint);
if (access(lost_path, F_OK))
{
/*
* Create a LOST.DIR in the root so we have somewhere to put
* lost cluster chains (fsck_msdos doesn't currently do this)
*/
if (mkdir(lost_path, 0755))
{
SLOGE("Unable to create LOST.DIR (%s)", strerror(errno));
}
}
free(lost_path);
}
return rc;
}
int Volume::mountVol() {
dev_t deviceNodes[4];
int n, i, rc = 0;
char errmsg[255];
const char* externalStorage = getenv("EXTERNAL_STORAGE");
bool primaryStorage = externalStorage && !strcmp(getMountpoint(), externalStorage);
char decrypt_state[PROPERTY_VALUE_MAX];
char crypto_state[PROPERTY_VALUE_MAX];
char encrypt_progress[PROPERTY_VALUE_MAX];
int flags;
property_get("vold.decrypt", decrypt_state, "");
property_get("vold.encrypt_progress", encrypt_progress, "");
/* Don't try to mount the volumes if we have not yet entered the disk password
* or are in the process of encrypting.
*/
if ((getState() == Volume::State_NoMedia) ||
((!strcmp(decrypt_state, "1") || encrypt_progress[0]) && primaryStorage)) {
snprintf(errmsg, sizeof(errmsg),
"Volume %s %s mount failed - no media",
getLabel(), getMountpoint());
mVm->getBroadcaster()->sendBroadcast(
ResponseCode::VolumeMountFailedNoMedia,
errmsg, false);
errno = ENODEV;
return -1;
} else if (getState() != Volume::State_Idle) {
errno = EBUSY;
if (getState() == Volume::State_Pending) {
mRetryMount = true;
}
return -1;
}
if (isMountpointMounted(getMountpoint())) {
SLOGW("Volume is idle but appears to be mounted - fixing");
setState(Volume::State_Mounted);
// mCurrentlyMountedKdev = XXX
return 0;
}
n = getDeviceNodes((dev_t *) &deviceNodes, 4);
if (!n) {
SLOGE("Failed to get device nodes (%s)\n", strerror(errno));
return -1;
}
/* If we're running encrypted, and the volume is marked as encryptable and nonremovable,
* and vold is asking to mount the primaryStorage device, then we need to decrypt
* that partition, and update the volume object to point to it's new decrypted
* block device
*/
property_get("ro.crypto.state", crypto_state, "");
flags = getFlags();
if (primaryStorage &&
((flags & (VOL_NONREMOVABLE | VOL_ENCRYPTABLE))==(VOL_NONREMOVABLE | VOL_ENCRYPTABLE)) &&
!strcmp(crypto_state, "encrypted") && !isDecrypted()) {
char new_sys_path[MAXPATHLEN];
char nodepath[256];
int new_major, new_minor;
if (n != 1) {
/* We only expect one device node returned when mounting encryptable volumes */
SLOGE("Too many device nodes returned when mounting %d\n", getMountpoint());
return -1;
}
if (cryptfs_setup_volume(getLabel(), MAJOR(deviceNodes[0]), MINOR(deviceNodes[0]),
new_sys_path, sizeof(new_sys_path),
&new_major, &new_minor)) {
SLOGE("Cannot setup encryption mapping for %d\n", getMountpoint());
return -1;
}
/* We now have the new sysfs path for the decrypted block device, and the
* majore and minor numbers for it. So, create the device, update the
* path to the new sysfs path, and continue.
*/
snprintf(nodepath,
sizeof(nodepath), "/dev/block/vold/%d:%d",
new_major, new_minor);
if (createDeviceNode(nodepath, new_major, new_minor)) {
SLOGE("Error making device node '%s' (%s)", nodepath,
strerror(errno));
}
// Todo: Either create sys filename from nodepath, or pass in bogus path so
// vold ignores state changes on this internal device.
updateDeviceInfo(nodepath, new_major, new_minor);
/* Get the device nodes again, because they just changed */
n = getDeviceNodes((dev_t *) &deviceNodes, 4);
if (!n) {
SLOGE("Failed to get device nodes (%s)\n", strerror(errno));
return -1;
}
}
for (i = 0; i < n; i++) {
char devicePath[255];
sprintf(devicePath, "/dev/block/vold/%d:%d", MAJOR(deviceNodes[i]),
MINOR(deviceNodes[i]));
SLOGI("%s being considered for volume %s\n", devicePath, getLabel());
errno = 0;
setState(Volume::State_Checking);
if (Fat::check(devicePath)) {
if (errno == ENODATA) {
SLOGW("%s does not contain a FAT filesystem\n", devicePath);
continue;
}
errno = EIO;
/* Badness - abort the mount */
SLOGE("%s failed FS checks (%s)", devicePath, strerror(errno));
setState(Volume::State_Idle);
return -1;
}
/*
* Mount the device on our internal staging mountpoint so we can
* muck with it before exposing it to non priviledged users.
*/
errno = 0;
int gid;
if (primaryStorage) {
// Special case the primary SD card.
// For this we grant write access to the SDCARD_RW group.
gid = AID_SDCARD_RW;
} else {
// For secondary external storage we keep things locked up.
gid = AID_MEDIA_RW;
}
if (Fat::doMount(devicePath, "/mnt/secure/staging", false, false, false,
AID_SYSTEM, gid, 0702, true)) {
SLOGE("%s failed to mount via VFAT (%s)\n", devicePath, strerror(errno));
continue;
}
SLOGI("Device %s, target %s mounted @ /mnt/secure/staging", devicePath, getMountpoint());
protectFromAutorunStupidity();
// only create android_secure on primary storage
if (primaryStorage && createBindMounts()) {
SLOGE("Failed to create bindmounts (%s)", strerror(errno));
umount("/mnt/secure/staging");
setState(Volume::State_Idle);
return -1;
}
/*
* Now that the bindmount trickery is done, atomically move the
* whole subtree to expose it to non priviledged users.
*/
if (doMoveMount("/mnt/secure/staging", getMountpoint(), false)) {
SLOGE("Failed to move mount (%s)", strerror(errno));
umount("/mnt/secure/staging");
setState(Volume::State_Idle);
return -1;
}
setState(Volume::State_Mounted);
mCurrentlyMountedKdev = deviceNodes[i];
return 0;
}
SLOGE("Volume %s found no suitable devices for mounting :(\n", getLabel());
setState(Volume::State_Idle);
return -1;
}
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;
}
bool formatEntireDevice = (mPartIdx == -1);
char devicePath[255];
dev_t diskNode = getDiskDevice();
dev_t partNode = MKDEV(MAJOR(diskNode), (formatEntireDevice ? 1 : mPartIdx));
setState(Volume::State_Formatting);
int ret = -1;
// Only initialize the MBR if we are formatting the entire device
if (formatEntireDevice) {
sprintf(devicePath, "/dev/block/vold/%d:%d",
MAJOR(diskNode), MINOR(diskNode));
if (initializeMbr(devicePath)) {
SLOGE("Failed to initialize MBR (%s)", strerror(errno));
goto err;
}
}
sprintf(devicePath, "/dev/block/vold/%d:%d",
MAJOR(partNode), MINOR(partNode));
#ifdef VOLD_EMMC_SHARES_DEV_MAJOR
// If emmc and sdcard share dev major number, vold may pick
// incorrectly based on partition nodes alone, formatting
// the wrong device. Use device nodes instead.
dev_t deviceNodes;
getDeviceNodes((dev_t *) &deviceNodes, 1);
sprintf(devicePath, "/dev/block/vold/%d:%d", MAJOR(deviceNodes), MINOR(deviceNodes));
#endif
if (mDebug) {
SLOGI("Formatting volume %s (%s)", getLabel(), devicePath);
}
if (Fat::format(devicePath, 0)) {
SLOGE("Failed to format (%s)", strerror(errno));
goto err;
}
ret = 0;
err:
setState(Volume::State_Idle);
return ret;
}
int Fat::check(const char *fsPath) {
bool rw = true;
if (access(FSCK_MSDOS_PATH, X_OK)) {
SLOGW("Skipping fs checks\n");
return 0;
}
#ifdef FSCK_MSDOS_MTK
SLOGI("-- MTK_FSCK_MSDOS_MTK enabled--");
int fsck_enhanced = 0 ; // 0 : original ver(fsck_msdos), 1 : enhanced ver(fsck_msdos_mtk)
if (access(FSCK_MSDOS_MTK_PATH, X_OK)) {
SLOGW("Because %s does not exist, we just use fsck_msdos (original ver.)", FSCK_MSDOS_MTK_PATH) ;
fsck_enhanced = 0 ;
}
else {
SLOGI("vold:fat:check fs = %s\n", fsPath) ;
int fd = open(fsPath, O_RDONLY);
if(fd < 0) {
SLOGW("Because cannot read dev, we just use fsck_msdos (original ver.)") ;
fsck_enhanced = 0 ;
}
else {
struct bootblock boot ;
if(readboot(fd, &boot) == 0) {
if(boot.ClustMask == 0xfff) {
SLOGW("Because fsck_msdos_mtk only supports FAT32, but this is FAT12!") ;
SLOGW("We still use fsck_msdos for FAT12!") ;
fsck_enhanced = 0 ;
}
else if(boot.ClustMask == 0xffff) {
SLOGW("Because fsck_msdos_mtk only supports FAT32, but this is FAT16!") ;
SLOGW("We still use fsck_msdos for FAT16!") ;
fsck_enhanced = 0 ;
}
else {
SLOGW("We always use fsck_msdos_mtk for FAT32 now!") ;
fsck_enhanced = 1 ;
}
/*if(boot.NumClusters * 16 > 8*1024*1024) {
SLOGI("It may need %d bytes ! It is too much ! Try enhanced fsck -- fsck_msdos_mtk !", boot.NumClusters * 16) ;
fsck_enhanced = 1 ;
}
else
SLOGW("Use fsck_msdos (original ver.)") ;
*/
}
close(fd) ;
}
}
#endif
int pass = 1;
int rc = 0;
do {
const char *args[5];
#ifdef FSCK_MSDOS_MTK
if(fsck_enhanced)
args[0] = FSCK_MSDOS_MTK_PATH;
else
#endif
args[0] = FSCK_MSDOS_PATH;
args[1] = "-p";
args[2] = "-f";
args[3] = fsPath;
args[4] = NULL;
rc = logwrap(4, args, 1);
switch(rc) {
case 0:
SLOGI("Filesystem check completed OK");
return 0;
case 2:
SLOGE("Filesystem check failed (not a FAT filesystem)");
errno = ENODATA;
return -1;
case 4:
if (pass++ <= 3) {
SLOGW("Filesystem modified - rechecking (pass %d)",
pass);
continue;
}
SLOGE("Failing check after too many rechecks");
errno = EIO;
return -1;
default:
SLOGE("Filesystem check failed (unknown exit code %d)", rc);
errno = EIO;
return -1;
}
} while (1);
return 0;
}
int Volume::mountVol() {
dev_t deviceNodes[4];
int n, i, rc = 0;
char errmsg[255];
if (getState() == Volume::State_NoMedia) {
snprintf(errmsg, sizeof(errmsg),
"Volume %s %s mount failed - no media",
getLabel(), getMountpoint());
mVm->getBroadcaster()->sendBroadcast(
ResponseCode::VolumeMountFailedNoMedia,
errmsg, false);
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
return 0;
}
n = getDeviceNodes((dev_t *) &deviceNodes, 4);
if (!n) {
SLOGE("Failed to get device nodes (%s)\n", strerror(errno));
return -1;
}
for (i = 0; i < n; i++) {
char devicePath[255];
sprintf(devicePath, "/dev/block/vold/%d:%d", MAJOR(deviceNodes[i]),
MINOR(deviceNodes[i]));
SLOGI("%s being considered for volume %s\n", devicePath, getLabel());
errno = 0;
setState(Volume::State_Checking);
if (Fat::check(devicePath)) {
if (errno == ENODATA) {
SLOGW("%s does not contain a FAT filesystem\n", devicePath);
continue;
}
errno = EIO;
/* Badness - abort the mount */
SLOGE("%s failed FS checks (%s)", devicePath, strerror(errno));
setState(Volume::State_Idle);
return -1;
}
/*
* Mount the device on our internal staging mountpoint so we can
* muck with it before exposing it to non priviledged users.
*/
errno = 0;
if (Fat::doMount(devicePath, "/mnt/secure/staging", false, false, false,
1000, 1015, 0702, true)) {
SLOGE("%s failed to mount via VFAT (%s)\n", devicePath, strerror(errno));
continue;
}
SLOGI("Device %s, target %s mounted @ /mnt/secure/staging", devicePath, getMountpoint());
protectFromAutorunStupidity();
if (createBindMounts()) {
SLOGE("Failed to create bindmounts (%s)", strerror(errno));
umount("/mnt/secure/staging");
setState(Volume::State_Idle);
return -1;
}
/*
* Now that the bindmount trickery is done, atomically move the
* whole subtree to expose it to non priviledged users.
*/
if (doMoveMount("/mnt/secure/staging", getMountpoint(), false)) {
SLOGE("Failed to move mount (%s)", strerror(errno));
umount("/mnt/secure/staging");
setState(Volume::State_Idle);
return -1;
}
setState(Volume::State_Mounted);
mCurrentlyMountedKdev = deviceNodes[i];
return 0;
}
SLOGE("Volume %s found no suitable devices for mounting :(\n", getLabel());
setState(Volume::State_Idle);
return -1;
}
int Fat::doMount(const char *fsPath, const char *mountPoint,
bool ro, bool remount, bool executable,
int ownerUid, int ownerGid, int permMask, bool createLost, bool discard) {
#else //MTK_EMMC_DISCARD
int Fat::doMount(const char *fsPath, const char *mountPoint,
bool ro, bool remount, bool executable,
int ownerUid, int ownerGid, int permMask, bool createLost) {
#endif //MTK_EMMC_DISCARD
int rc;
unsigned long flags;
char mountData[255];
flags = MS_NODEV | MS_NOSUID | MS_DIRSYNC;
flags |= (executable ? 0 : MS_NOEXEC);
flags |= (ro ? MS_RDONLY : 0);
flags |= (remount ? MS_REMOUNT : 0);
/*
* Note: This is a temporary hack. If the sampling profiler is enabled,
* we make the SD card world-writable so any process can write snapshots.
*
* TODO: Remove this code once we have a drop box in system_server.
*/
char value[PROPERTY_VALUE_MAX];
property_get("persist.sampling_profiler", value, "");
if (value[0] == '1') {
SLOGW("The SD card is world-writable because the"
" 'persist.sampling_profiler' system property is set to '1'.");
permMask = 0;
}
#ifndef VENDOR_EDIT
//[email protected], 2012/01/31, Modify for for CTS that other users are not permmited to write SD card
/*
#ifdef MTK_EMMC_DISCARD
sprintf(mountData,
"utf8,uid=%d,gid=%d,fmask=%o,dmask=%o,shortname=mixed%s",
ownerUid, ownerGid, permMask, permMask, (discard? ",discard": "") );
#else //MTK_EMMC_DISCARD
sprintf(mountData,
"utf8,uid=%d,gid=%d,fmask=%o,dmask=%o,shortname=mixed",
ownerUid, ownerGid, permMask, permMask);
#endif //MTK_EMMC_DISCARD
*/
#else /* VENDOR_EDIT */
sprintf(mountData,
"utf8,uid=%d,gid=%d,fmask=%o,dmask=%o,shortname=mixed",
ownerUid, ownerGid, 0002, 0002);
SLOGW("vold:: mount %s to %s,ro =%d,remount =%d",fsPath,mountPoint,ro,remount);
#endif /* VENDOR_EDIT */
rc = mount(fsPath, mountPoint, "vfat", flags, mountData);
if (rc && errno == EROFS) {
SLOGE("%s appears to be a read only filesystem - retrying mount RO", fsPath);
flags |= MS_RDONLY;
rc = mount(fsPath, mountPoint, "vfat", flags, mountData);
}
if (rc == 0 && createLost) {
char *lost_path;
asprintf(&lost_path, "%s/LOST.DIR", mountPoint);
if (access(lost_path, F_OK)) {
/*
* Create a LOST.DIR in the root so we have somewhere to put
* lost cluster chains (fsck_msdos doesn't currently do this)
*/
if (mkdir(lost_path, 0755)) {
SLOGE("Unable to create LOST.DIR (%s)", strerror(errno));
}
}
free(lost_path);
}
return rc;
}
int VolumeManager::unmountLoopImage(const char *id, const char *idHash,
const char *fileName, const char *mountPoint, bool force) {
if (!isMountpointMounted(mountPoint)) {
SLOGE("Unmount request for %s when not mounted", id);
errno = ENOENT;
return -1;
}
int i, rc;
for (i = 1; i <= UNMOUNT_RETRIES; i++) {
rc = umount(mountPoint);
if (!rc) {
break;
}
if (rc && (errno == EINVAL || errno == ENOENT)) {
SLOGI("Container %s unmounted OK", id);
rc = 0;
break;
}
SLOGW("%s unmount attempt %d failed (%s)",
id, i, strerror(errno));
int action = 0; // default is to just complain
if (force) {
if (i > (UNMOUNT_RETRIES - 2))
action = 2; // SIGKILL
else if (i > (UNMOUNT_RETRIES - 3))
action = 1; // SIGHUP
}
Process::killProcessesWithOpenFiles(mountPoint, action);
usleep(UNMOUNT_SLEEP_BETWEEN_RETRY_MS);
}
if (rc) {
errno = EBUSY;
SLOGE("Failed to unmount container %s (%s)", id, strerror(errno));
return -1;
}
int retries = 10;
while(retries--) {
if (!rmdir(mountPoint)) {
break;
}
SLOGW("Failed to rmdir %s (%s)", mountPoint, strerror(errno));
usleep(UNMOUNT_SLEEP_BETWEEN_RETRY_MS);
}
if (!retries) {
SLOGE("Timed out trying to rmdir %s (%s)", mountPoint, strerror(errno));
}
if (Devmapper::destroy(idHash) && errno != ENXIO) {
SLOGE("Failed to destroy devmapper instance (%s)", strerror(errno));
}
char loopDevice[255];
if (!Loop::lookupActive(idHash, loopDevice, sizeof(loopDevice))) {
Loop::destroyByDevice(loopDevice);
} else {
SLOGW("Failed to find loop device for {%s} (%s)", fileName, strerror(errno));
}
AsecIdCollection::iterator it;
for (it = mActiveContainers->begin(); it != mActiveContainers->end(); ++it) {
ContainerData* cd = *it;
if (!strcmp(cd->id, id)) {
free(*it);
mActiveContainers->erase(it);
break;
}
}
if (it == mActiveContainers->end()) {
SLOGW("mActiveContainers is inconsistent!");
}
return 0;
}
void PhoneMachine::receiveSolicited(const Parcel& data)
{
int serial = data.readInt32();
int result = data.readInt32();
RILRequest *request = getPending(serial);
if (!request) {
SLOGW("receiveSolicited: not requested serial=%d result=%d\n", serial, result);
return;
}
SLOGV("<<< Solicited message=%s [%d] serial=%d result=%d\n", rilMessageStr(request->message()),
request->message(), serial, result);
int token = request->token();
int message = request->message();
int ivalue = 0;
Parcel extra;
switch (message) {
case RIL_REQUEST_GET_SIM_STATUS:
ivalue = data.readInt32(); // Store the card state
break;
case RIL_REQUEST_GET_CURRENT_CALLS: {
// We retrieve audio information for the client.
// We also update the AudioFlinger audio state appropriately based
// on the current call state
ivalue = data.readInt32(); // How many calls there are
audio_mode_t audio_mode = AUDIO_MODE_NORMAL;
for (int i = 0 ; i < ivalue ; i++) {
RILCall call(data);
CallState call_state(call.state, call.index,
call.number, call.numberPresentation,
call.name, call.namePresentation);
call_state.writeToParcel(&extra);
if (call.state == RIL_CALL_INCOMING)
audio_mode = AUDIO_MODE_RINGTONE;
else if (call.state == RIL_CALL_ACTIVE || call.state == RIL_CALL_DIALING || call.state == RIL_CALL_ALERTING)
audio_mode = AUDIO_MODE_IN_CALL;
}
SLOGV(" %d calls, audio_mode=%d\n", ivalue, audio_mode);
updateAudioMode(audio_mode);
break;
}
case RIL_REQUEST_DIAL:
case RIL_REQUEST_HANGUP:
case RIL_REQUEST_ANSWER:
case RIL_REQUEST_UDUB:
case RIL_REQUEST_SET_MUTE:
break;
case RIL_REQUEST_GET_MUTE:
ivalue = data.readInt32();
break;
case RIL_REQUEST_SIGNAL_STRENGTH:
// In actuality, we should probably read all 12 signal strengths
ivalue = data.readInt32();
break;
#if defined(SHORT_PLATFORM_VERSION) && (SHORT_PLATFORM_VERSION == 23)
#else
case RIL_REQUEST_VOICE_REGISTRATION_STATE:
ivalue = data.readInt32(); // Starts with the number of strings
for (int i = 0 ; i < ivalue ; i++)
extra.writeString16(data.readString16());
break;
#endif
case RIL_REQUEST_OPERATOR: {
ivalue = data.readInt32();
assert(ivalue == 3);
extra.writeString16(data.readString16());
extra.writeString16(data.readString16());
extra.writeString16(data.readString16());
break;
}
case RIL_REQUEST_RADIO_POWER:
SLOGV(" RIL Radio Power\n");
// No response....
break;
default:
SLOGV("Unhandled RIL request %d\n", message);
break;
}
if (request->client() != NULL) {
SLOGV(" Passing solicited message to client token=%d message=%d result=%d ivalue=%d...\n",
token, message, result, ivalue);
request->client()->Response( token, message, result, ivalue, extra );
}
delete request;
}
