int VolumeManager::cleanupAsec(Volume *v, bool force) {
// Continue for the primary storage (VOL_PROVIDES_ASEC) and for the
// external apps volume (VOL_EXTERNAL_APPS) if app moving is enabled
if ((v->getFlags() & VOL_PROVIDES_ASEC) == 0
&& ((v->getFlags() & VOL_EXTERNAL_APPS) == 0
|| !v->isExternalAppsEnabled())) {
return 0;
}
int rc = 0;
char asecFileName[255];
AsecIdCollection removeAsec;
AsecIdCollection removeObb;
for (AsecIdCollection::iterator it = mActiveContainers->begin(); it != mActiveContainers->end();
++it) {
ContainerData* cd = *it;
if (cd->type == ASEC) {
if (findAsec(cd->id, asecFileName, sizeof(asecFileName))) {
SLOGE("Couldn't find ASEC %s; cleaning up", cd->id);
removeAsec.push_back(cd);
} else {
SLOGD("Found ASEC at path %s", asecFileName);
if (!strncmp(asecFileName, Volume::SEC_ASECDIR_EXT,
strlen(Volume::SEC_ASECDIR_EXT))) {
removeAsec.push_back(cd);
}
}
} else if (cd->type == OBB) {
if (v == getVolumeForFile(cd->id)) {
removeObb.push_back(cd);
}
} else {
SLOGE("Unknown container type %d!", cd->type);
}
}
for (AsecIdCollection::iterator it = removeAsec.begin(); it != removeAsec.end(); ++it) {
ContainerData *cd = *it;
SLOGI("Unmounting ASEC %s (dependent on %s)", cd->id, v->getLabel());
if (unmountAsec(cd->id, force)) {
SLOGE("Failed to unmount ASEC %s (%s)", cd->id, strerror(errno));
rc = -1;
}
}
for (AsecIdCollection::iterator it = removeObb.begin(); it != removeObb.end(); ++it) {
ContainerData *cd = *it;
SLOGI("Unmounting OBB %s (dependent on %s)", cd->id, v->getLabel());
if (unmountObb(cd->id, force)) {
SLOGE("Failed to unmount OBB %s (%s)", cd->id, strerror(errno));
rc = -1;
}
}
return rc;
}
int VolumeManager::destroyAsec(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);
if (isMountpointMounted(mountPoint)) {
if (mDebug) {
SLOGD("Unmounting container before destroy");
}
if (unmountAsec(id, force)) {
SLOGE("Failed to unmount asec %s for destroy (%s)", id, strerror(errno));
return -1;
}
}
if (unlink(asecFileName)) {
SLOGE("Failed to unlink asec '%s' (%s)", asecFileName, strerror(errno));
return -1;
}
if (mDebug) {
SLOGD("ASEC %s destroyed", id);
}
return 0;
}
int VolumeManager::destroyAsec(const char *id, bool force) {
char asecFileName[255];
char mountPoint[255];
if (findAsec(id, asecFileName, sizeof(asecFileName))) {
SLOGE("Couldn't find ASEC %s", id);
return -1;
}
int written = snprintf(mountPoint, sizeof(mountPoint), "%s/%s", Volume::ASECDIR, id);
if ((written < 0) || (size_t(written) >= sizeof(mountPoint))) {
SLOGE("ASEC destroy failed for %s: couldn't construct mountpoint", id);
return -1;
}
if (isMountpointMounted(mountPoint)) {
if (mDebug) {
SLOGD("Unmounting container before destroy");
}
if (unmountAsec(id, force)) {
SLOGE("Failed to unmount asec %s for destroy (%s)", id, strerror(errno));
return -1;
}
}
if (unlink(asecFileName)) {
SLOGE("Failed to unlink asec '%s' (%s)", asecFileName, strerror(errno));
return -1;
}
if (mDebug) {
SLOGD("ASEC %s destroyed", id);
}
return 0;
}
int VolumeManager::cleanupAsec(Volume *v, bool force) {
/* Only EXTERNAL_STORAGE needs ASEC cleanup. */
if (!v->isPrimaryStorage())
return 0;
while(mActiveContainers->size()) {
AsecIdCollection::iterator it = mActiveContainers->begin();
ContainerData* cd = *it;
SLOGI("Unmounting ASEC %s (dependant on %s)", cd->id, v->getMountpoint());
if (cd->type == ASEC) {
if (unmountAsec(cd->id, force)) {
SLOGE("Failed to unmount ASEC %s (%s)", cd->id, strerror(errno));
return -1;
}
} else if (cd->type == OBB) {
if (unmountObb(cd->id, force)) {
SLOGE("Failed to unmount OBB %s (%s)", cd->id, strerror(errno));
return -1;
}
} else {
SLOGE("Unknown container type %d!", cd->type);
return -1;
}
}
return 0;
}
int VolumeManager::unmountAllAsecsInDir(const char *directory) {
DIR *d = opendir(directory);
int rc = 0;
if (!d) {
SLOGE("Could not open asec dir %s", directory);
return -1;
}
size_t dirent_len = offsetof(struct dirent, d_name) +
fpathconf(dirfd(d), _PC_NAME_MAX) + 1;
struct dirent *dent = (struct dirent *) malloc(dirent_len);
if (dent == NULL) {
SLOGE("Failed to allocate memory for asec dir");
return -1;
}
struct dirent *result;
while (!readdir_r(d, dent, &result) && result != NULL) {
if (dent->d_name[0] == '.')
continue;
if (dent->d_type != DT_REG)
continue;
size_t name_len = strlen(dent->d_name);
if (name_len > 5 && name_len < (ID_BUF_LEN + ASEC_SUFFIX_LEN - 1) &&
!strcmp(&dent->d_name[name_len - 5], ASEC_SUFFIX)) {
char id[ID_BUF_LEN];
strlcpy(id, dent->d_name, name_len - 4);
if (unmountAsec(id, true)) {
/* Register the error, but try to unmount more asecs */
rc = -1;
}
}
}
closedir(d);
free(dent);
return rc;
}
