int Volume::unmountVol(bool force, bool revert) {
int i, rc;
if (getState() != Volume::State_Mounted) {
SLOGE("Volume %s unmount request when not mounted", getLabel());
errno = EINVAL;
return UNMOUNT_NOT_MOUNTED_ERR;
}
setState(Volume::State_Unmounting);
usleep(1000 * 1000); // Give the framework some time to react
/*
* First move the mountpoint back to our internal staging point
* so nobody else can muck with it while we work.
*/
if (doMoveMount(getMountpoint(), SEC_STGDIR, force)) {
SLOGE("Failed to move mount %s => %s (%s)", getMountpoint(), SEC_STGDIR, strerror(errno));
setState(Volume::State_Mounted);
return -1;
}
protectFromAutorunStupidity();
/*
* Unmount the tmpfs which was obscuring the asec image directory
* from non root users
*/
if (doUnmount(Volume::SEC_STG_SECIMGDIR, force)) {
SLOGE("Failed to unmount tmpfs on %s (%s)", SEC_STG_SECIMGDIR, strerror(errno));
goto fail_republish;
}
/*
* Remove the bindmount we were using to keep a reference to
* the previously obscured directory.
*/
if (doUnmount(Volume::SEC_ASECDIR, force)) {
SLOGE("Failed to remove bindmount on %s (%s)", SEC_ASECDIR, strerror(errno));
goto fail_remount_tmpfs;
}
/*
* Finally, unmount the actual block device from the staging dir
*/
if (doUnmount(Volume::SEC_STGDIR, force)) {
SLOGE("Failed to unmount %s (%s)", SEC_STGDIR, strerror(errno));
goto fail_recreate_bindmount;
}
SLOGI("%s unmounted sucessfully", getMountpoint());
/* If this is an encrypted volume, and we've been asked to undo
* the crypto mapping, then revert the dm-crypt mapping, and revert
* the device info to the original values.
*/
if (revert && isDecrypted()) {
cryptfs_revert_volume(getLabel());
revertDeviceInfo();
SLOGI("Encrypted volume %s reverted successfully", getMountpoint());
}
setState(Volume::State_Idle);
mCurrentlyMountedKdev = -1;
return 0;
/*
* Failure handling - try to restore everything back the way it was
*/
fail_recreate_bindmount:
if (mount(SEC_STG_SECIMGDIR, SEC_ASECDIR, "", MS_BIND, NULL)) {
SLOGE("Failed to restore bindmount after failure! - Storage will appear offline!");
goto out_nomedia;
}
fail_remount_tmpfs:
if (mount("tmpfs", SEC_STG_SECIMGDIR, "tmpfs", MS_RDONLY, "size=0,mode=0,uid=0,gid=0")) {
SLOGE("Failed to restore tmpfs after failure! - Storage will appear offline!");
goto out_nomedia;
}
fail_republish:
if (doMoveMount(SEC_STGDIR, getMountpoint(), force)) {
SLOGE("Failed to republish mount after failure! - Storage will appear offline!");
goto out_nomedia;
}
setState(Volume::State_Mounted);
return -1;
out_nomedia:
setState(Volume::State_NoMedia);
return -1;
}
int Volume::unmountVol(bool force, bool revert) {
int i, rc;
int flags = getFlags();
bool providesAsec = (flags & VOL_PROVIDES_ASEC) != 0;
bool is_emulated_sd = false;
#ifdef MTK_SHARED_SDCARD
if (IsEmmcStorage()) {
providesAsec = false;
is_emulated_sd = true;
}
#endif
if (getState() != Volume::State_Mounted) {
SLOGE("Volume %s unmount request when not mounted", getLabel());
errno = EINVAL;
return UNMOUNT_NOT_MOUNTED_ERR;
}
#ifdef MTK_MULTI_PARTITION_MOUNT_ONLY_SUPPORT
if (false == isMountpointMounted(getFuseMountpoint())) {
SLOGD("usbotg: Volume unmountVol %s is already unmounted", getFuseMountpoint());
goto unmount_success;
}
#endif
setState(Volume::State_Unmounting);
usleep(1000 * 100); // Give the framework some time to react
char service[64];
char service_id[64];
strcpy(service_id, getMountpoint()+strlen(Volume::MEDIA_DIR)+1);
snprintf(service, 64, "fuse_%s", service_id);
if (is_emulated_sd) {
snprintf(service, 64, "sdcard");
}
#ifdef MTK_MULTI_PARTITION_MOUNT_ONLY_SUPPORT
if (0 == strcmp(getLabel(), "usbotg")) {
sPid = mPid;
SLOGD("usbotg: Volume unmountVol ,mPid=%d",mPid);
if(-1 != mPid)
{
kill(mPid,SIGKILL);
}
SLOGD("usbotg: Volume unmountVol ,mountpoint=%s",getFuseMountpoint());
if (doUnmount(getFuseMountpoint(), force)) {
SLOGE("Failed to unmount %s (%s)", getFuseMountpoint(), strerror(errno));
goto fail_remount_secure;
}
if (doUnmount(getMountpoint(), force)) {
SLOGE("Failed to unmount %s (%s)", getMountpoint(), strerror(errno));
goto fail_remount_secure;
}
SLOGI("usbotg: Volume unmounted sucessfully");
} else {
property_set("ctl.stop", service);
/* Give it a chance to stop. I wish we had a synchronous way to determine this... */
//sleep(1);
waitForServiceState(service, "stopped");
// TODO: determine failure mode if FUSE times out
if (providesAsec && doUnmount(Volume::SEC_ASECDIR_EXT, force) != 0) {
SLOGE("Failed to unmount secure area on %s (%s)", getMountpoint(), strerror(errno));
goto out_mounted;
}
/* Now that the fuse daemon is dead, unmount it */
if (doUnmount(getFuseMountpoint(), force) != 0) {
SLOGE("Failed to unmount %s (%s)", getFuseMountpoint(), strerror(errno));
goto fail_remount_secure;
}
/* Unmount the real sd card */
if (!is_emulated_sd) {
if (doUnmount(getMountpoint(), force) != 0) {
SLOGE("Failed to unmount %s (%s)", getMountpoint(), strerror(errno));
goto fail_remount_secure;
}
SLOGI("%s unmounted successfully", getMountpoint());
}
}
#else
{
#define MAX_NEED_TO_WAIT 10
bool need_to_wait = false;
int need_to_wait_count = 0;
do {
Process::killProcessesWithOpenFiles(getFuseMountpoint(), 0, "mdlogger", &need_to_wait);
if(need_to_wait) {
need_to_wait_count++;
SLOGI("need_to_wait=%d, need_to_wait_count=%d,", need_to_wait, need_to_wait_count);
usleep(1000*1000);
}
else {
break;
}
} while (need_to_wait && need_to_wait_count < MAX_NEED_TO_WAIT);
property_set("ctl.stop", service);
/* Give it a chance to stop. I wish we had a synchronous way to determine this... */
//sleep(1);
waitForServiceState(service, "stopped");
// TODO: determine failure mode if FUSE times out
if (providesAsec && doUnmount(Volume::SEC_ASECDIR_EXT, force) != 0) {
SLOGE("Failed to unmount secure area on %s (%s)", getMountpoint(), strerror(errno));
goto out_mounted;
}
/* Now that the fuse daemon is dead, unmount it */
if (doUnmount(getFuseMountpoint(), force) != 0) {
SLOGE("Failed to unmount %s (%s)", getFuseMountpoint(), strerror(errno));
goto fail_remount_secure;
}
/* Unmount the real sd card */
if (!is_emulated_sd) {
if (doUnmount(getMountpoint(), force) != 0) {
SLOGE("Failed to unmount %s (%s)", getMountpoint(), strerror(errno));
goto fail_remount_secure;
}
SLOGI("%s unmounted successfully", getMountpoint());
}
}
#endif
/* If this is an encrypted volume, and we've been asked to undo
* the crypto mapping, then revert the dm-crypt mapping, and revert
* the device info to the original values.
*/
if (revert && isDecrypted()) {
cryptfs_revert_volume(getLabel());
revertDeviceInfo();
SLOGI("Encrypted volume %s reverted successfully", getMountpoint());
}
setUuid(NULL);
setUserLabel(NULL);
setState(Volume::State_Idle);
unmount_success:
mCurrentlyMountedKdev = -1;
#ifdef MTK_MULTI_PARTITION_MOUNT_ONLY_SUPPORT
if (0 == strcmp(getLabel(), "usbotg")) {
char cmd[255] = {0};
sprintf(cmd, "/system/bin/sh -c \"rm -r %s\"", getFuseMountpoint());
system(cmd);
SLOGD("usbotg: Volume unmountVol cmd = %s !!!", cmd);
sprintf(cmd, "/system/bin/sh -c \"rm -r %s\"", getMountpoint());
system(cmd);
SLOGD("usbotg: Volume unmountVol cmd = %s !!!", cmd);
//remove(getMountpoint());
}
#endif
return 0;
fail_remount_secure:
if (providesAsec && mountAsecExternal() != 0) {
SLOGE("Failed to remount secure area (%s)", strerror(errno));
goto out_nomedia;
}
out_mounted:
property_set("ctl.start", service);
waitForServiceState(service, "running");
setState(Volume::State_Mounted);
return -1;
out_nomedia:
setState(Volume::State_NoMedia);
return -1;
}