2 * Copyright (C) 2008 The Android Open Source Project
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
25 #include <sys/ioctl.h>
26 #include <sys/mount.h>
28 #include <sys/types.h>
32 #include <linux/kdev_t.h>
34 #define LOG_TAG "Vold"
36 #include <openssl/md5.h>
38 #include <android-base/logging.h>
39 #include <android-base/stringprintf.h>
40 #include <cutils/fs.h>
41 #include <cutils/log.h>
43 #include <selinux/android.h>
45 #include <sysutils/NetlinkEvent.h>
47 #include <private/android_filesystem_config.h>
49 #include "Benchmark.h"
50 #include "EmulatedVolume.h"
51 #include "VolumeManager.h"
52 #include "NetlinkManager.h"
53 #include "ResponseCode.h"
58 #include "Devmapper.h"
64 #define MASS_STORAGE_FILE_PATH "/sys/class/android_usb/android0/f_mass_storage/lun/file"
66 #define ROUND_UP_POWER_OF_2(number, po2) (((!!((number) & ((1U << (po2)) - 1))) << (po2))\
67 + ((number) & (~((1U << (po2)) - 1))))
69 using android::base::StringPrintf;
72 * Path to external storage where *only* root can access ASEC image files
74 const char *VolumeManager::SEC_ASECDIR_EXT = "/mnt/secure/asec";
77 * Path to internal storage where *only* root can access ASEC image files
79 const char *VolumeManager::SEC_ASECDIR_INT = "/data/app-asec";
82 * Path to where secure containers are mounted
84 const char *VolumeManager::ASECDIR = "/mnt/asec";
87 * Path to where OBBs are mounted
89 const char *VolumeManager::LOOPDIR = "/mnt/obb";
91 static const char* kUserMountPath = "/mnt/user";
93 static const unsigned int kMajorBlockMmc = 179;
94 static const unsigned int kMajorBlockExperimentalMin = 240;
95 static const unsigned int kMajorBlockExperimentalMax = 254;
97 /* writes superblock at end of file or device given by name */
98 static int writeSuperBlock(const char* name, struct asec_superblock *sb, unsigned int numImgSectors) {
99 int sbfd = open(name, O_RDWR | O_CLOEXEC);
101 SLOGE("Failed to open %s for superblock write (%s)", name, strerror(errno));
105 if (lseek(sbfd, (numImgSectors * 512), SEEK_SET) < 0) {
106 SLOGE("Failed to lseek for superblock (%s)", strerror(errno));
111 if (write(sbfd, sb, sizeof(struct asec_superblock)) != sizeof(struct asec_superblock)) {
112 SLOGE("Failed to write superblock (%s)", strerror(errno));
120 static unsigned long adjustSectorNumExt4(unsigned long numSectors) {
121 // Ext4 started to reserve 2% or 4096 clusters, whichever is smaller for
122 // preventing costly operations or unexpected ENOSPC error.
123 // Ext4::format() uses default block size without clustering.
124 unsigned long clusterSectors = 4096 / 512;
125 unsigned long reservedSectors = (numSectors * 2)/100 + (numSectors % 50 > 0);
126 numSectors += reservedSectors > (4096 * clusterSectors) ? (4096 * clusterSectors) : reservedSectors;
127 return ROUND_UP_POWER_OF_2(numSectors, 3);
130 static unsigned long adjustSectorNumFAT(unsigned long numSectors) {
134 unsigned long fatSize = (((numSectors * 4) / 512) + 1) * 2;
135 numSectors += fatSize + 2;
137 * FAT is aligned to 32 kb with 512b sectors.
139 return ROUND_UP_POWER_OF_2(numSectors, 6);
142 static int setupLoopDevice(char* buffer, size_t len, const char* asecFileName, const char* idHash, bool debug) {
143 if (Loop::lookupActive(idHash, buffer, len)) {
144 if (Loop::create(idHash, asecFileName, buffer, len)) {
145 SLOGE("ASEC loop device creation failed for %s (%s)", asecFileName, strerror(errno));
149 SLOGD("New loop device created at %s", buffer);
153 SLOGD("Found active loopback for %s at %s", asecFileName, buffer);
159 static int setupDevMapperDevice(char* buffer, size_t len, const char* loopDevice, const char* asecFileName, const char* key, const char* idHash , unsigned long numImgSectors, bool* createdDMDevice, bool debug) {
160 if (strcmp(key, "none")) {
161 if (Devmapper::lookupActive(idHash, buffer, len)) {
162 if (Devmapper::create(idHash, loopDevice, key, numImgSectors,
164 SLOGE("ASEC device mapping failed for %s (%s)", asecFileName, strerror(errno));
168 SLOGD("New devmapper instance created at %s", buffer);
172 SLOGD("Found active devmapper for %s at %s", asecFileName, buffer);
175 *createdDMDevice = true;
177 strcpy(buffer, loopDevice);
178 *createdDMDevice = false;
183 static void waitForDevMapper(const char *dmDevice) {
185 * Wait for the device mapper node to be created. Sometimes it takes a
186 * while. Wait for up to 1 second. We could also inspect incoming uevents,
187 * but that would take more effort.
191 if (!access(dmDevice, F_OK) || errno != ENOENT) {
198 VolumeManager *VolumeManager::sInstance = NULL;
200 VolumeManager *VolumeManager::Instance() {
202 sInstance = new VolumeManager();
206 VolumeManager::VolumeManager() {
208 mActiveContainers = new AsecIdCollection();
210 mUmsSharingCount = 0;
211 mSavedDirtyRatio = -1;
212 // set dirty ratio to 0 when UMS is active
216 VolumeManager::~VolumeManager() {
217 delete mActiveContainers;
220 char *VolumeManager::asecHash(const char *id, char *buffer, size_t len) {
221 static const char* digits = "0123456789abcdef";
223 unsigned char sig[MD5_DIGEST_LENGTH];
225 if (buffer == NULL) {
226 SLOGE("Destination buffer is NULL");
229 } else if (id == NULL) {
230 SLOGE("Source buffer is NULL");
233 } else if (len < MD5_ASCII_LENGTH_PLUS_NULL) {
234 SLOGE("Target hash buffer size < %d bytes (%zu)",
235 MD5_ASCII_LENGTH_PLUS_NULL, len);
240 MD5(reinterpret_cast<const unsigned char*>(id), strlen(id), sig);
243 for (int i = 0; i < MD5_DIGEST_LENGTH; i++) {
244 *p++ = digits[sig[i] >> 4];
245 *p++ = digits[sig[i] & 0x0F];
252 int VolumeManager::setDebug(bool enable) {
257 int VolumeManager::start() {
258 // Always start from a clean slate by unmounting everything in
259 // directories that we own, in case we crashed.
262 // Assume that we always have an emulated volume on internal
263 // storage; the framework will decide if it should be mounted.
264 CHECK(mInternalEmulated == nullptr);
265 mInternalEmulated = std::shared_ptr<android::vold::VolumeBase>(
266 new android::vold::EmulatedVolume("/data/media"));
267 mInternalEmulated->create();
272 int VolumeManager::stop() {
273 CHECK(mInternalEmulated != nullptr);
274 mInternalEmulated->destroy();
275 mInternalEmulated = nullptr;
279 void VolumeManager::handleBlockEvent(NetlinkEvent *evt) {
280 std::lock_guard<std::mutex> lock(mLock);
283 LOG(VERBOSE) << "----------------";
284 LOG(VERBOSE) << "handleBlockEvent with action " << (int) evt->getAction();
288 std::string eventPath(evt->findParam("DEVPATH")?evt->findParam("DEVPATH"):"");
289 std::string devType(evt->findParam("DEVTYPE")?evt->findParam("DEVTYPE"):"");
291 if (devType != "disk") return;
293 int major = atoi(evt->findParam("MAJOR"));
294 int minor = atoi(evt->findParam("MINOR"));
295 dev_t device = makedev(major, minor);
297 switch (evt->getAction()) {
298 case NetlinkEvent::Action::kAdd: {
299 for (const auto& source : mDiskSources) {
300 if (source->matches(eventPath)) {
301 // For now, assume that MMC and virtio-blk (the latter is
302 // emulator-specific; see Disk.cpp for details) devices are SD,
303 // and that everything else is USB
304 int flags = source->getFlags();
305 if (major == kMajorBlockMmc
306 || (android::vold::IsRunningInEmulator()
307 && major >= (int) kMajorBlockExperimentalMin
308 && major <= (int) kMajorBlockExperimentalMax)) {
309 flags |= android::vold::Disk::Flags::kSd;
311 flags |= android::vold::Disk::Flags::kUsb;
314 auto disk = new android::vold::Disk(eventPath, device,
315 source->getNickname(), flags);
317 mDisks.push_back(std::shared_ptr<android::vold::Disk>(disk));
323 case NetlinkEvent::Action::kChange: {
324 LOG(DEBUG) << "Disk at " << major << ":" << minor << " changed";
325 for (const auto& disk : mDisks) {
326 if (disk->getDevice() == device) {
327 disk->readMetadata();
328 disk->readPartitions();
333 case NetlinkEvent::Action::kRemove: {
334 auto i = mDisks.begin();
335 while (i != mDisks.end()) {
336 if ((*i)->getDevice() == device) {
346 LOG(WARNING) << "Unexpected block event action " << (int) evt->getAction();
352 void VolumeManager::addDiskSource(const std::shared_ptr<DiskSource>& diskSource) {
353 std::lock_guard<std::mutex> lock(mLock);
354 mDiskSources.push_back(diskSource);
357 std::shared_ptr<android::vold::Disk> VolumeManager::findDisk(const std::string& id) {
358 for (auto disk : mDisks) {
359 if (disk->getId() == id) {
366 std::shared_ptr<android::vold::VolumeBase> VolumeManager::findVolume(const std::string& id) {
367 if (mInternalEmulated->getId() == id) {
368 return mInternalEmulated;
370 for (const auto& disk : mDisks) {
371 auto vol = disk->findVolume(id);
372 if (vol != nullptr) {
379 void VolumeManager::listVolumes(android::vold::VolumeBase::Type type,
380 std::list<std::string>& list) {
382 for (const auto& disk : mDisks) {
383 disk->listVolumes(type, list);
387 nsecs_t VolumeManager::benchmarkPrivate(const std::string& id) {
389 if (id == "private" || id == "null") {
392 auto vol = findVolume(id);
393 if (vol != nullptr && vol->getState() == android::vold::VolumeBase::State::kMounted) {
394 path = vol->getPath();
399 LOG(WARNING) << "Failed to find volume for " << id;
403 return android::vold::BenchmarkPrivate(path);
406 int VolumeManager::forgetPartition(const std::string& partGuid) {
407 std::string normalizedGuid;
408 if (android::vold::NormalizeHex(partGuid, normalizedGuid)) {
409 LOG(WARNING) << "Invalid GUID " << partGuid;
413 std::string keyPath = android::vold::BuildKeyPath(normalizedGuid);
414 if (unlink(keyPath.c_str()) != 0) {
415 LOG(ERROR) << "Failed to unlink " << keyPath;
422 int VolumeManager::linkPrimary(userid_t userId) {
423 std::string source(mPrimary->getPath());
424 if (mPrimary->getType() == android::vold::VolumeBase::Type::kEmulated) {
425 source = StringPrintf("%s/%d", source.c_str(), userId);
426 fs_prepare_dir(source.c_str(), 0755, AID_ROOT, AID_ROOT);
429 std::string target(StringPrintf("/mnt/user/%d/primary", userId));
430 if (TEMP_FAILURE_RETRY(unlink(target.c_str()))) {
431 if (errno != ENOENT) {
432 SLOGW("Failed to unlink %s: %s", target.c_str(), strerror(errno));
435 LOG(DEBUG) << "Linking " << source << " to " << target;
436 if (TEMP_FAILURE_RETRY(symlink(source.c_str(), target.c_str()))) {
437 SLOGW("Failed to link %s to %s: %s", source.c_str(), target.c_str(),
444 int VolumeManager::onUserAdded(userid_t userId, int userSerialNumber) {
445 mAddedUsers[userId] = userSerialNumber;
449 int VolumeManager::onUserRemoved(userid_t userId) {
450 mAddedUsers.erase(userId);
454 int VolumeManager::onUserStarted(userid_t userId) {
455 // Note that sometimes the system will spin up processes from Zygote
456 // before actually starting the user, so we're okay if Zygote
457 // already created this directory.
458 std::string path(StringPrintf("%s/%d", kUserMountPath, userId));
459 fs_prepare_dir(path.c_str(), 0755, AID_ROOT, AID_ROOT);
461 mStartedUsers.insert(userId);
468 int VolumeManager::onUserStopped(userid_t userId) {
469 mStartedUsers.erase(userId);
473 int VolumeManager::setPrimary(const std::shared_ptr<android::vold::VolumeBase>& vol) {
475 for (userid_t userId : mStartedUsers) {
481 static int unmount_tree(const char* path) {
482 size_t path_len = strlen(path);
484 FILE* fp = setmntent("/proc/mounts", "r");
486 ALOGE("Error opening /proc/mounts: %s", strerror(errno));
490 // Some volumes can be stacked on each other, so force unmount in
491 // reverse order to give us the best chance of success.
492 std::list<std::string> toUnmount;
494 while ((mentry = getmntent(fp)) != NULL) {
495 if (strncmp(mentry->mnt_dir, path, path_len) == 0) {
496 toUnmount.push_front(std::string(mentry->mnt_dir));
501 for (const auto& path : toUnmount) {
502 if (umount2(path.c_str(), MNT_DETACH)) {
503 ALOGW("Failed to unmount %s: %s", path.c_str(), strerror(errno));
509 int VolumeManager::remountUid(uid_t uid, const std::string& mode) {
510 LOG(DEBUG) << "Remounting " << uid << " as mode " << mode;
514 char rootName[PATH_MAX];
515 char pidName[PATH_MAX];
521 if (!(dir = opendir("/proc"))) {
522 PLOG(ERROR) << "Failed to opendir";
526 // Figure out root namespace to compare against below
527 if (android::vold::SaneReadLinkAt(dirfd(dir), "1/ns/mnt", rootName, PATH_MAX) == -1) {
528 PLOG(ERROR) << "Failed to readlink";
533 // Poke through all running PIDs look for apps running as UID
534 while ((de = readdir(dir))) {
538 pidFd = openat(dirfd(dir), de->d_name, O_RDONLY | O_DIRECTORY | O_CLOEXEC);
542 if (fstat(pidFd, &sb) != 0) {
543 PLOG(WARNING) << "Failed to stat " << de->d_name;
546 if (sb.st_uid != uid) {
550 // Matches so far, but refuse to touch if in root namespace
551 LOG(DEBUG) << "Found matching PID " << de->d_name;
552 if (android::vold::SaneReadLinkAt(pidFd, "ns/mnt", pidName, PATH_MAX) == -1) {
553 PLOG(WARNING) << "Failed to read namespace for " << de->d_name;
556 if (!strcmp(rootName, pidName)) {
557 LOG(WARNING) << "Skipping due to root namespace";
561 // We purposefully leave the namespace open across the fork
562 nsFd = openat(pidFd, "ns/mnt", O_RDONLY);
564 PLOG(WARNING) << "Failed to open namespace for " << de->d_name;
568 if (!(child = fork())) {
569 if (setns(nsFd, CLONE_NEWNS) != 0) {
570 PLOG(ERROR) << "Failed to setns for " << de->d_name;
574 unmount_tree("/storage");
576 std::string storageSource;
577 if (mode == "default") {
578 storageSource = "/mnt/runtime/default";
579 } else if (mode == "read") {
580 storageSource = "/mnt/runtime/read";
581 } else if (mode == "write") {
582 storageSource = "/mnt/runtime/write";
584 // Sane default of no storage visible
587 if (TEMP_FAILURE_RETRY(mount(storageSource.c_str(), "/storage",
588 NULL, MS_BIND | MS_REC, NULL)) == -1) {
589 PLOG(ERROR) << "Failed to mount " << storageSource << " for "
593 if (TEMP_FAILURE_RETRY(mount(NULL, "/storage", NULL,
594 MS_REC | MS_SLAVE, NULL)) == -1) {
595 PLOG(ERROR) << "Failed to set MS_SLAVE to /storage for "
600 // Mount user-specific symlink helper into place
601 userid_t user_id = multiuser_get_user_id(uid);
602 std::string userSource(StringPrintf("/mnt/user/%d", user_id));
603 if (TEMP_FAILURE_RETRY(mount(userSource.c_str(), "/storage/self",
604 NULL, MS_BIND, NULL)) == -1) {
605 PLOG(ERROR) << "Failed to mount " << userSource << " for "
614 PLOG(ERROR) << "Failed to fork";
617 TEMP_FAILURE_RETRY(waitpid(child, nullptr, 0));
628 int VolumeManager::reset() {
629 // Tear down all existing disks/volumes and start from a blank slate so
630 // newly connected framework hears all events.
631 mInternalEmulated->destroy();
632 mInternalEmulated->create();
633 for (const auto& disk : mDisks) {
638 mStartedUsers.clear();
642 int VolumeManager::shutdown() {
643 mInternalEmulated->destroy();
644 for (const auto& disk : mDisks) {
651 int VolumeManager::unmountAll() {
652 std::lock_guard<std::mutex> lock(mLock);
654 // First, try gracefully unmounting all known devices
655 if (mInternalEmulated != nullptr) {
656 mInternalEmulated->unmount();
658 for (const auto& disk : mDisks) {
662 // Worst case we might have some stale mounts lurking around, so
663 // force unmount those just to be safe.
664 FILE* fp = setmntent("/proc/mounts", "r");
666 SLOGE("Error opening /proc/mounts: %s", strerror(errno));
670 // Some volumes can be stacked on each other, so force unmount in
671 // reverse order to give us the best chance of success.
672 std::list<std::string> toUnmount;
674 while ((mentry = getmntent(fp)) != NULL) {
675 if (strncmp(mentry->mnt_dir, "/mnt/", 5) == 0
676 || strncmp(mentry->mnt_dir, "/storage/", 9) == 0) {
677 toUnmount.push_front(std::string(mentry->mnt_dir));
682 for (const auto& path : toUnmount) {
683 SLOGW("Tearing down stale mount %s", path.c_str());
684 android::vold::ForceUnmount(path);
690 int VolumeManager::getObbMountPath(const char *sourceFile, char *mountPath, int mountPathLen) {
692 if (!asecHash(sourceFile, idHash, sizeof(idHash))) {
693 SLOGE("Hash of '%s' failed (%s)", sourceFile, strerror(errno));
697 memset(mountPath, 0, mountPathLen);
698 int written = snprintf(mountPath, mountPathLen, "%s/%s", VolumeManager::LOOPDIR, idHash);
699 if ((written < 0) || (written >= mountPathLen)) {
704 if (access(mountPath, F_OK)) {
712 int VolumeManager::getAsecMountPath(const char *id, char *buffer, int maxlen) {
713 char asecFileName[255];
715 if (!isLegalAsecId(id)) {
716 SLOGE("getAsecMountPath: Invalid asec id \"%s\"", id);
721 if (findAsec(id, asecFileName, sizeof(asecFileName))) {
722 SLOGE("Couldn't find ASEC %s", id);
726 memset(buffer, 0, maxlen);
727 if (access(asecFileName, F_OK)) {
732 int written = snprintf(buffer, maxlen, "%s/%s", VolumeManager::ASECDIR, id);
733 if ((written < 0) || (written >= maxlen)) {
734 SLOGE("getAsecMountPath failed for %s: couldn't construct path in buffer", id);
742 int VolumeManager::getAsecFilesystemPath(const char *id, char *buffer, int maxlen) {
743 char asecFileName[255];
745 if (!isLegalAsecId(id)) {
746 SLOGE("getAsecFilesystemPath: Invalid asec id \"%s\"", id);
751 if (findAsec(id, asecFileName, sizeof(asecFileName))) {
752 SLOGE("Couldn't find ASEC %s", id);
756 memset(buffer, 0, maxlen);
757 if (access(asecFileName, F_OK)) {
762 int written = snprintf(buffer, maxlen, "%s", asecFileName);
763 if ((written < 0) || (written >= maxlen)) {
771 int VolumeManager::createAsec(const char *id, unsigned long numSectors, const char *fstype,
772 const char *key, const int ownerUid, bool isExternal) {
773 struct asec_superblock sb;
774 memset(&sb, 0, sizeof(sb));
776 if (!isLegalAsecId(id)) {
777 SLOGE("createAsec: Invalid asec id \"%s\"", id);
782 const bool wantFilesystem = strcmp(fstype, "none");
783 bool usingExt4 = false;
784 if (wantFilesystem) {
785 usingExt4 = !strcmp(fstype, "ext4");
787 sb.c_opts |= ASEC_SB_C_OPTS_EXT4;
788 } else if (strcmp(fstype, "fat")) {
789 SLOGE("Invalid filesystem type %s", fstype);
795 sb.magic = ASEC_SB_MAGIC;
796 sb.ver = ASEC_SB_VER;
798 if (numSectors < ((1024*1024)/512)) {
799 SLOGE("Invalid container size specified (%lu sectors)", numSectors);
804 char asecFileName[255];
806 if (!findAsec(id, asecFileName, sizeof(asecFileName))) {
807 SLOGE("ASEC file '%s' currently exists - destroy it first! (%s)",
808 asecFileName, strerror(errno));
813 const char *asecDir = isExternal ? VolumeManager::SEC_ASECDIR_EXT : VolumeManager::SEC_ASECDIR_INT;
815 int written = snprintf(asecFileName, sizeof(asecFileName), "%s/%s.asec", asecDir, id);
816 if ((written < 0) || (size_t(written) >= sizeof(asecFileName))) {
821 if (!access(asecFileName, F_OK)) {
822 SLOGE("ASEC file '%s' currently exists - destroy it first! (%s)",
823 asecFileName, strerror(errno));
828 unsigned long numImgSectors;
830 numImgSectors = adjustSectorNumExt4(numSectors);
832 numImgSectors = adjustSectorNumFAT(numSectors);
834 // Add +1 for our superblock which is at the end
835 if (Loop::createImageFile(asecFileName, numImgSectors + 1)) {
836 SLOGE("ASEC image file creation failed (%s)", strerror(errno));
841 if (!asecHash(id, idHash, sizeof(idHash))) {
842 SLOGE("Hash of '%s' failed (%s)", id, strerror(errno));
843 unlink(asecFileName);
847 char loopDevice[255];
848 if (Loop::create(idHash, asecFileName, loopDevice, sizeof(loopDevice))) {
849 SLOGE("ASEC loop device creation failed (%s)", strerror(errno));
850 unlink(asecFileName);
855 bool cleanupDm = false;
857 if (strcmp(key, "none")) {
858 // XXX: This is all we support for now
859 sb.c_cipher = ASEC_SB_C_CIPHER_TWOFISH;
860 if (Devmapper::create(idHash, loopDevice, key, numImgSectors, dmDevice,
862 SLOGE("ASEC device mapping failed (%s)", strerror(errno));
863 Loop::destroyByDevice(loopDevice);
864 unlink(asecFileName);
869 sb.c_cipher = ASEC_SB_C_CIPHER_NONE;
870 strcpy(dmDevice, loopDevice);
874 * Drop down the superblock at the end of the file
876 if (writeSuperBlock(loopDevice, &sb, numImgSectors)) {
878 Devmapper::destroy(idHash);
880 Loop::destroyByDevice(loopDevice);
881 unlink(asecFileName);
885 if (wantFilesystem) {
887 char mountPoint[255];
889 int written = snprintf(mountPoint, sizeof(mountPoint), "%s/%s", VolumeManager::ASECDIR, id);
890 if ((written < 0) || (size_t(written) >= sizeof(mountPoint))) {
891 SLOGE("ASEC fs format failed: couldn't construct mountPoint");
893 Devmapper::destroy(idHash);
895 Loop::destroyByDevice(loopDevice);
896 unlink(asecFileName);
901 formatStatus = android::vold::ext4::Format(dmDevice, numImgSectors, mountPoint);
903 formatStatus = android::vold::vfat::Format(dmDevice, numImgSectors);
906 if (formatStatus < 0) {
907 SLOGE("ASEC fs format failed (%s)", strerror(errno));
909 Devmapper::destroy(idHash);
911 Loop::destroyByDevice(loopDevice);
912 unlink(asecFileName);
916 if (mkdir(mountPoint, 0000)) {
917 if (errno != EEXIST) {
918 SLOGE("Mountpoint creation failed (%s)", strerror(errno));
920 Devmapper::destroy(idHash);
922 Loop::destroyByDevice(loopDevice);
923 unlink(asecFileName);
930 mountStatus = android::vold::ext4::Mount(dmDevice, mountPoint,
931 false, false, false);
933 mountStatus = android::vold::vfat::Mount(dmDevice, mountPoint,
934 false, false, false, ownerUid, 0, 0000, false);
938 SLOGE("ASEC FAT mount failed (%s)", strerror(errno));
940 Devmapper::destroy(idHash);
942 Loop::destroyByDevice(loopDevice);
943 unlink(asecFileName);
948 int dirfd = open(mountPoint, O_DIRECTORY | O_CLOEXEC);
950 if (fchown(dirfd, ownerUid, AID_SYSTEM)
951 || fchmod(dirfd, S_IRUSR | S_IWUSR | S_IXUSR | S_ISGID | S_IRGRP | S_IXGRP)) {
952 SLOGI("Cannot chown/chmod new ASEC mount point %s", mountPoint);
958 SLOGI("Created raw secure container %s (no filesystem)", id);
961 mActiveContainers->push_back(new ContainerData(strdup(id), ASEC));
965 int VolumeManager::resizeAsec(const char *id, unsigned long numSectors, const char *key) {
966 char asecFileName[255];
967 char mountPoint[255];
968 bool cleanupDm = false;
970 if (!isLegalAsecId(id)) {
971 SLOGE("resizeAsec: Invalid asec id \"%s\"", id);
976 if (findAsec(id, asecFileName, sizeof(asecFileName))) {
977 SLOGE("Couldn't find ASEC %s", id);
981 int written = snprintf(mountPoint, sizeof(mountPoint), "%s/%s", VolumeManager::ASECDIR, id);
982 if ((written < 0) || (size_t(written) >= sizeof(mountPoint))) {
983 SLOGE("ASEC resize failed for %s: couldn't construct mountpoint", id);
987 if (isMountpointMounted(mountPoint)) {
988 SLOGE("ASEC %s mounted. Unmount before resizing", id);
993 struct asec_superblock sb;
995 unsigned long oldNumSec = 0;
997 if ((fd = open(asecFileName, O_RDONLY | O_CLOEXEC)) < 0) {
998 SLOGE("Failed to open ASEC file (%s)", strerror(errno));
1003 if (fstat(fd, &info) < 0) {
1004 SLOGE("Failed to get file size (%s)", strerror(errno));
1009 oldNumSec = info.st_size / 512;
1012 * Try to read superblock.
1014 memset(&sb, 0, sizeof(struct asec_superblock));
1015 if (lseek(fd, ((oldNumSec - 1) * 512), SEEK_SET) < 0) {
1016 SLOGE("lseek failed (%s)", strerror(errno));
1020 if (read(fd, &sb, sizeof(struct asec_superblock)) != sizeof(struct asec_superblock)) {
1021 SLOGE("superblock read failed (%s)", strerror(errno));
1028 SLOGD("Container sb magic/ver (%.8x/%.2x)", sb.magic, sb.ver);
1030 if (sb.magic != ASEC_SB_MAGIC || sb.ver != ASEC_SB_VER) {
1031 SLOGE("Bad container magic/version (%.8x/%.2x)", sb.magic, sb.ver);
1032 errno = EMEDIUMTYPE;
1036 unsigned long numImgSectors;
1037 if (!(sb.c_opts & ASEC_SB_C_OPTS_EXT4)) {
1038 SLOGE("Only ext4 partitions are supported for resize");
1042 numImgSectors = adjustSectorNumExt4(numSectors);
1046 * add one block for the superblock
1048 SLOGD("Resizing from %lu sectors to %lu sectors", oldNumSec, numImgSectors + 1);
1049 if (oldNumSec == numImgSectors + 1) {
1050 SLOGW("Size unchanged; ignoring resize request");
1052 } else if (oldNumSec > numImgSectors + 1) {
1053 SLOGE("Only growing is currently supported.");
1058 if (Loop::resizeImageFile(asecFileName, numImgSectors + 1)) {
1059 SLOGE("Resize of ASEC image file failed. Could not resize %s", id);
1064 * Drop down a copy of the superblock at the end of the file
1066 if (writeSuperBlock(asecFileName, &sb, numImgSectors))
1070 if (!asecHash(id, idHash, sizeof(idHash))) {
1071 SLOGE("Hash of '%s' failed (%s)", id, strerror(errno));
1075 char loopDevice[255];
1076 if (setupLoopDevice(loopDevice, sizeof(loopDevice), asecFileName, idHash, mDebug))
1081 if (setupDevMapperDevice(dmDevice, sizeof(dmDevice), loopDevice, asecFileName, key, idHash, numImgSectors, &cleanupDm, mDebug)) {
1082 Loop::destroyByDevice(loopDevice);
1087 * Wait for the device mapper node to be created.
1089 waitForDevMapper(dmDevice);
1091 if (android::vold::ext4::Resize(dmDevice, numImgSectors)) {
1092 SLOGE("Unable to resize %s (%s)", id, strerror(errno));
1094 Devmapper::destroy(idHash);
1096 Loop::destroyByDevice(loopDevice);
1102 Loop::resizeImageFile(asecFileName, oldNumSec);
1106 int VolumeManager::finalizeAsec(const char *id) {
1107 char asecFileName[255];
1108 char loopDevice[255];
1109 char mountPoint[255];
1111 if (!isLegalAsecId(id)) {
1112 SLOGE("finalizeAsec: Invalid asec id \"%s\"", id);
1117 if (findAsec(id, asecFileName, sizeof(asecFileName))) {
1118 SLOGE("Couldn't find ASEC %s", id);
1123 if (!asecHash(id, idHash, sizeof(idHash))) {
1124 SLOGE("Hash of '%s' failed (%s)", id, strerror(errno));
1128 if (Loop::lookupActive(idHash, loopDevice, sizeof(loopDevice))) {
1129 SLOGE("Unable to finalize %s (%s)", id, strerror(errno));
1133 unsigned long nr_sec = 0;
1134 struct asec_superblock sb;
1136 if (Loop::lookupInfo(loopDevice, &sb, &nr_sec)) {
1140 int written = snprintf(mountPoint, sizeof(mountPoint), "%s/%s", VolumeManager::ASECDIR, id);
1141 if ((written < 0) || (size_t(written) >= sizeof(mountPoint))) {
1142 SLOGE("ASEC finalize failed: couldn't construct mountPoint");
1147 if (sb.c_opts & ASEC_SB_C_OPTS_EXT4) {
1148 result = android::vold::ext4::Mount(loopDevice, mountPoint,
1151 result = android::vold::vfat::Mount(loopDevice, mountPoint,
1152 true, true, true, 0, 0, 0227, false);
1156 SLOGE("ASEC finalize mount failed (%s)", strerror(errno));
1161 SLOGD("ASEC %s finalized", id);
1166 int VolumeManager::fixupAsecPermissions(const char *id, gid_t gid, const char* filename) {
1167 char asecFileName[255];
1168 char loopDevice[255];
1169 char mountPoint[255];
1171 if (gid < AID_APP) {
1172 SLOGE("Group ID is not in application range");
1176 if (!isLegalAsecId(id)) {
1177 SLOGE("fixupAsecPermissions: Invalid asec id \"%s\"", id);
1182 if (findAsec(id, asecFileName, sizeof(asecFileName))) {
1183 SLOGE("Couldn't find ASEC %s", id);
1188 if (!asecHash(id, idHash, sizeof(idHash))) {
1189 SLOGE("Hash of '%s' failed (%s)", id, strerror(errno));
1193 if (Loop::lookupActive(idHash, loopDevice, sizeof(loopDevice))) {
1194 SLOGE("Unable fix permissions during lookup on %s (%s)", id, strerror(errno));
1198 unsigned long nr_sec = 0;
1199 struct asec_superblock sb;
1201 if (Loop::lookupInfo(loopDevice, &sb, &nr_sec)) {
1205 int written = snprintf(mountPoint, sizeof(mountPoint), "%s/%s", VolumeManager::ASECDIR, id);
1206 if ((written < 0) || (size_t(written) >= sizeof(mountPoint))) {
1207 SLOGE("Unable remount to fix permissions for %s: couldn't construct mountpoint", id);
1212 if ((sb.c_opts & ASEC_SB_C_OPTS_EXT4) == 0) {
1216 int ret = android::vold::ext4::Mount(loopDevice, mountPoint,
1217 false /* read-only */,
1219 false /* executable */);
1221 SLOGE("Unable remount to fix permissions for %s (%s)", id, strerror(errno));
1225 char *paths[] = { mountPoint, NULL };
1227 FTS *fts = fts_open(paths, FTS_PHYSICAL | FTS_NOCHDIR | FTS_XDEV, NULL);
1229 // Traverse the entire hierarchy and chown to system UID.
1230 for (FTSENT *ftsent = fts_read(fts); ftsent != NULL; ftsent = fts_read(fts)) {
1231 // We don't care about the lost+found directory.
1232 if (!strcmp(ftsent->fts_name, "lost+found")) {
1237 * There can only be one file marked as private right now.
1238 * This should be more robust, but it satisfies the requirements
1239 * we have for right now.
1241 const bool privateFile = !strcmp(ftsent->fts_name, filename);
1243 int fd = open(ftsent->fts_accpath, O_NOFOLLOW | O_CLOEXEC);
1245 SLOGE("Couldn't open file %s: %s", ftsent->fts_accpath, strerror(errno));
1250 result |= fchown(fd, AID_SYSTEM, privateFile? gid : AID_SYSTEM);
1252 if (ftsent->fts_info & FTS_D) {
1253 result |= fchmod(fd, 0755);
1254 } else if (ftsent->fts_info & FTS_F) {
1255 result |= fchmod(fd, privateFile ? 0640 : 0644);
1258 if (selinux_android_restorecon(ftsent->fts_path, 0) < 0) {
1259 SLOGE("restorecon failed for %s: %s\n", ftsent->fts_path, strerror(errno));
1267 // Finally make the directory readable by everyone.
1268 int dirfd = open(mountPoint, O_DIRECTORY | O_CLOEXEC);
1269 if (dirfd < 0 || fchmod(dirfd, 0755)) {
1270 SLOGE("Couldn't change owner of existing directory %s: %s", mountPoint, strerror(errno));
1278 result |= android::vold::ext4::Mount(loopDevice, mountPoint,
1279 true /* read-only */,
1281 true /* execute */);
1284 SLOGE("ASEC fix permissions failed (%s)", strerror(errno));
1289 SLOGD("ASEC %s permissions fixed", id);
1294 int VolumeManager::renameAsec(const char *id1, const char *id2) {
1295 char asecFilename1[255];
1296 char *asecFilename2;
1297 char mountPoint[255];
1301 if (!isLegalAsecId(id1)) {
1302 SLOGE("renameAsec: Invalid asec id1 \"%s\"", id1);
1307 if (!isLegalAsecId(id2)) {
1308 SLOGE("renameAsec: Invalid asec id2 \"%s\"", id2);
1313 if (findAsec(id1, asecFilename1, sizeof(asecFilename1), &dir)) {
1314 SLOGE("Couldn't find ASEC %s", id1);
1318 asprintf(&asecFilename2, "%s/%s.asec", dir, id2);
1320 int written = snprintf(mountPoint, sizeof(mountPoint), "%s/%s", VolumeManager::ASECDIR, id1);
1321 if ((written < 0) || (size_t(written) >= sizeof(mountPoint))) {
1322 SLOGE("Rename failed: couldn't construct mountpoint");
1326 if (isMountpointMounted(mountPoint)) {
1327 SLOGW("Rename attempt when src mounted");
1332 written = snprintf(mountPoint, sizeof(mountPoint), "%s/%s", VolumeManager::ASECDIR, id2);
1333 if ((written < 0) || (size_t(written) >= sizeof(mountPoint))) {
1334 SLOGE("Rename failed: couldn't construct mountpoint2");
1338 if (isMountpointMounted(mountPoint)) {
1339 SLOGW("Rename attempt when dst mounted");
1344 if (!access(asecFilename2, F_OK)) {
1345 SLOGE("Rename attempt when dst exists");
1350 if (rename(asecFilename1, asecFilename2)) {
1351 SLOGE("Rename of '%s' to '%s' failed (%s)", asecFilename1, asecFilename2, strerror(errno));
1355 free(asecFilename2);
1359 free(asecFilename2);
1363 #define UNMOUNT_RETRIES 5
1364 #define UNMOUNT_SLEEP_BETWEEN_RETRY_MS (1000 * 1000)
1365 int VolumeManager::unmountAsec(const char *id, bool force) {
1366 char asecFileName[255];
1367 char mountPoint[255];
1369 if (!isLegalAsecId(id)) {
1370 SLOGE("unmountAsec: Invalid asec id \"%s\"", id);
1375 if (findAsec(id, asecFileName, sizeof(asecFileName))) {
1376 SLOGE("Couldn't find ASEC %s", id);
1380 int written = snprintf(mountPoint, sizeof(mountPoint), "%s/%s", VolumeManager::ASECDIR, id);
1381 if ((written < 0) || (size_t(written) >= sizeof(mountPoint))) {
1382 SLOGE("ASEC unmount failed for %s: couldn't construct mountpoint", id);
1387 if (!asecHash(id, idHash, sizeof(idHash))) {
1388 SLOGE("Hash of '%s' failed (%s)", id, strerror(errno));
1392 return unmountLoopImage(id, idHash, asecFileName, mountPoint, force);
1395 int VolumeManager::unmountObb(const char *fileName, bool force) {
1396 char mountPoint[255];
1399 if (!asecHash(fileName, idHash, sizeof(idHash))) {
1400 SLOGE("Hash of '%s' failed (%s)", fileName, strerror(errno));
1404 int written = snprintf(mountPoint, sizeof(mountPoint), "%s/%s", VolumeManager::LOOPDIR, idHash);
1405 if ((written < 0) || (size_t(written) >= sizeof(mountPoint))) {
1406 SLOGE("OBB unmount failed for %s: couldn't construct mountpoint", fileName);
1410 return unmountLoopImage(fileName, idHash, fileName, mountPoint, force);
1413 int VolumeManager::unmountLoopImage(const char *id, const char *idHash,
1414 const char *fileName, const char *mountPoint, bool force) {
1415 if (!isMountpointMounted(mountPoint)) {
1416 SLOGE("Unmount request for %s when not mounted", id);
1422 for (i = 1; i <= UNMOUNT_RETRIES; i++) {
1423 rc = umount(mountPoint);
1427 if (rc && (errno == EINVAL || errno == ENOENT)) {
1428 SLOGI("Container %s unmounted OK", id);
1432 SLOGW("%s unmount attempt %d failed (%s)",
1433 id, i, strerror(errno));
1435 int signal = 0; // default is to just complain
1438 if (i > (UNMOUNT_RETRIES - 2))
1440 else if (i > (UNMOUNT_RETRIES - 3))
1444 Process::killProcessesWithOpenFiles(mountPoint, signal);
1445 usleep(UNMOUNT_SLEEP_BETWEEN_RETRY_MS);
1450 SLOGE("Failed to unmount container %s (%s)", id, strerror(errno));
1457 if (!rmdir(mountPoint)) {
1461 SLOGW("Failed to rmdir %s (%s)", mountPoint, strerror(errno));
1462 usleep(UNMOUNT_SLEEP_BETWEEN_RETRY_MS);
1466 SLOGE("Timed out trying to rmdir %s (%s)", mountPoint, strerror(errno));
1469 for (i=1; i <= UNMOUNT_RETRIES; i++) {
1470 if (Devmapper::destroy(idHash) && errno != ENXIO) {
1471 SLOGE("Failed to destroy devmapper instance (%s)", strerror(errno));
1472 usleep(UNMOUNT_SLEEP_BETWEEN_RETRY_MS);
1479 char loopDevice[255];
1480 if (!Loop::lookupActive(idHash, loopDevice, sizeof(loopDevice))) {
1481 Loop::destroyByDevice(loopDevice);
1483 SLOGW("Failed to find loop device for {%s} (%s)", fileName, strerror(errno));
1486 AsecIdCollection::iterator it;
1487 for (it = mActiveContainers->begin(); it != mActiveContainers->end(); ++it) {
1488 ContainerData* cd = *it;
1489 if (!strcmp(cd->id, id)) {
1491 mActiveContainers->erase(it);
1495 if (it == mActiveContainers->end()) {
1496 SLOGW("mActiveContainers is inconsistent!");
1501 int VolumeManager::destroyAsec(const char *id, bool force) {
1502 char asecFileName[255];
1503 char mountPoint[255];
1505 if (!isLegalAsecId(id)) {
1506 SLOGE("destroyAsec: Invalid asec id \"%s\"", id);
1511 if (findAsec(id, asecFileName, sizeof(asecFileName))) {
1512 SLOGE("Couldn't find ASEC %s", id);
1516 int written = snprintf(mountPoint, sizeof(mountPoint), "%s/%s", VolumeManager::ASECDIR, id);
1517 if ((written < 0) || (size_t(written) >= sizeof(mountPoint))) {
1518 SLOGE("ASEC destroy failed for %s: couldn't construct mountpoint", id);
1522 if (isMountpointMounted(mountPoint)) {
1524 SLOGD("Unmounting container before destroy");
1526 if (unmountAsec(id, force)) {
1527 SLOGE("Failed to unmount asec %s for destroy (%s)", id, strerror(errno));
1532 if (unlink(asecFileName)) {
1533 SLOGE("Failed to unlink asec '%s' (%s)", asecFileName, strerror(errno));
1538 SLOGD("ASEC %s destroyed", id);
1544 * Legal ASEC ids consist of alphanumeric characters, '-',
1545 * '_', or '.'. ".." is not allowed. The first or last character
1546 * of the ASEC id cannot be '.' (dot).
1548 bool VolumeManager::isLegalAsecId(const char *id) const {
1550 size_t len = strlen(id);
1555 if ((id[0] == '.') || (id[len - 1] == '.')) {
1559 for (i = 0; i < len; i++) {
1561 // i=0 is guaranteed never to have a dot. See above.
1562 if (id[i-1] == '.') return false;
1565 if (id[i] == '_' || id[i] == '-') continue;
1566 if (id[i] >= 'a' && id[i] <= 'z') continue;
1567 if (id[i] >= 'A' && id[i] <= 'Z') continue;
1568 if (id[i] >= '0' && id[i] <= '9') continue;
1575 bool VolumeManager::isAsecInDirectory(const char *dir, const char *asecName) const {
1576 int dirfd = open(dir, O_DIRECTORY | O_CLOEXEC);
1578 SLOGE("Couldn't open internal ASEC dir (%s)", strerror(errno));
1583 bool ret = (fstatat(dirfd, asecName, &sb, AT_SYMLINK_NOFOLLOW) == 0)
1584 && S_ISREG(sb.st_mode);
1591 int VolumeManager::findAsec(const char *id, char *asecPath, size_t asecPathLen,
1592 const char **directory) const {
1595 if (!isLegalAsecId(id)) {
1596 SLOGE("findAsec: Invalid asec id \"%s\"", id);
1601 if (asprintf(&asecName, "%s.asec", id) < 0) {
1602 SLOGE("Couldn't allocate string to write ASEC name");
1607 if (isAsecInDirectory(VolumeManager::SEC_ASECDIR_INT, asecName)) {
1608 dir = VolumeManager::SEC_ASECDIR_INT;
1609 } else if (isAsecInDirectory(VolumeManager::SEC_ASECDIR_EXT, asecName)) {
1610 dir = VolumeManager::SEC_ASECDIR_EXT;
1616 if (directory != NULL) {
1620 if (asecPath != NULL) {
1621 int written = snprintf(asecPath, asecPathLen, "%s/%s", dir, asecName);
1622 if ((written < 0) || (size_t(written) >= asecPathLen)) {
1623 SLOGE("findAsec failed for %s: couldn't construct ASEC path", id);
1633 int VolumeManager::mountAsec(const char *id, const char *key, int ownerUid, bool readOnly) {
1634 char asecFileName[255];
1635 char mountPoint[255];
1637 if (!isLegalAsecId(id)) {
1638 SLOGE("mountAsec: Invalid asec id \"%s\"", id);
1643 if (findAsec(id, asecFileName, sizeof(asecFileName))) {
1644 SLOGE("Couldn't find ASEC %s", id);
1648 int written = snprintf(mountPoint, sizeof(mountPoint), "%s/%s", VolumeManager::ASECDIR, id);
1649 if ((written < 0) || (size_t(written) >= sizeof(mountPoint))) {
1650 SLOGE("ASEC mount failed for %s: couldn't construct mountpoint", id);
1654 if (isMountpointMounted(mountPoint)) {
1655 SLOGE("ASEC %s already mounted", id);
1661 if (!asecHash(id, idHash, sizeof(idHash))) {
1662 SLOGE("Hash of '%s' failed (%s)", id, strerror(errno));
1666 char loopDevice[255];
1667 if (setupLoopDevice(loopDevice, sizeof(loopDevice), asecFileName, idHash, mDebug))
1671 bool cleanupDm = false;
1673 unsigned long nr_sec = 0;
1674 struct asec_superblock sb;
1676 if (Loop::lookupInfo(loopDevice, &sb, &nr_sec)) {
1681 SLOGD("Container sb magic/ver (%.8x/%.2x)", sb.magic, sb.ver);
1683 if (sb.magic != ASEC_SB_MAGIC || sb.ver != ASEC_SB_VER) {
1684 SLOGE("Bad container magic/version (%.8x/%.2x)", sb.magic, sb.ver);
1685 Loop::destroyByDevice(loopDevice);
1686 errno = EMEDIUMTYPE;
1689 nr_sec--; // We don't want the devmapping to extend onto our superblock
1691 if (setupDevMapperDevice(dmDevice, sizeof(dmDevice), loopDevice, asecFileName, key, idHash , nr_sec, &cleanupDm, mDebug)) {
1692 Loop::destroyByDevice(loopDevice);
1696 if (mkdir(mountPoint, 0000)) {
1697 if (errno != EEXIST) {
1698 SLOGE("Mountpoint creation failed (%s)", strerror(errno));
1700 Devmapper::destroy(idHash);
1702 Loop::destroyByDevice(loopDevice);
1708 * Wait for the device mapper node to be created.
1710 waitForDevMapper(dmDevice);
1713 if (sb.c_opts & ASEC_SB_C_OPTS_EXT4) {
1714 result = android::vold::ext4::Mount(dmDevice, mountPoint,
1715 readOnly, false, readOnly);
1717 result = android::vold::vfat::Mount(dmDevice, mountPoint,
1718 readOnly, false, readOnly, ownerUid, 0, 0222, false);
1722 SLOGE("ASEC mount failed (%s)", strerror(errno));
1724 Devmapper::destroy(idHash);
1726 Loop::destroyByDevice(loopDevice);
1730 mActiveContainers->push_back(new ContainerData(strdup(id), ASEC));
1732 SLOGD("ASEC %s mounted", id);
1738 * Mounts an image file <code>img</code>.
1740 int VolumeManager::mountObb(const char *img, const char *key, int ownerGid) {
1741 char mountPoint[255];
1744 if (!asecHash(img, idHash, sizeof(idHash))) {
1745 SLOGE("Hash of '%s' failed (%s)", img, strerror(errno));
1749 int written = snprintf(mountPoint, sizeof(mountPoint), "%s/%s", VolumeManager::LOOPDIR, idHash);
1750 if ((written < 0) || (size_t(written) >= sizeof(mountPoint))) {
1751 SLOGE("OBB mount failed for %s: couldn't construct mountpoint", img);
1755 if (isMountpointMounted(mountPoint)) {
1756 SLOGE("Image %s already mounted", img);
1761 char loopDevice[255];
1762 if (setupLoopDevice(loopDevice, sizeof(loopDevice), img, idHash, mDebug))
1766 bool cleanupDm = false;
1768 unsigned long nr_sec = 0;
1770 if ((fd = open(loopDevice, O_RDWR | O_CLOEXEC)) < 0) {
1771 SLOGE("Failed to open loopdevice (%s)", strerror(errno));
1772 Loop::destroyByDevice(loopDevice);
1776 get_blkdev_size(fd, &nr_sec);
1778 SLOGE("Failed to get loop size (%s)", strerror(errno));
1779 Loop::destroyByDevice(loopDevice);
1786 if (setupDevMapperDevice(dmDevice, sizeof(loopDevice), loopDevice, img,key, idHash, nr_sec, &cleanupDm, mDebug)) {
1787 Loop::destroyByDevice(loopDevice);
1791 if (mkdir(mountPoint, 0755)) {
1792 if (errno != EEXIST) {
1793 SLOGE("Mountpoint creation failed (%s)", strerror(errno));
1795 Devmapper::destroy(idHash);
1797 Loop::destroyByDevice(loopDevice);
1803 * Wait for the device mapper node to be created.
1805 waitForDevMapper(dmDevice);
1807 if (android::vold::vfat::Mount(dmDevice, mountPoint,
1808 true, false, true, 0, ownerGid, 0227, false)) {
1809 SLOGE("Image mount failed (%s)", strerror(errno));
1811 Devmapper::destroy(idHash);
1813 Loop::destroyByDevice(loopDevice);
1817 mActiveContainers->push_back(new ContainerData(strdup(img), OBB));
1819 SLOGD("Image %s mounted", img);
1824 int VolumeManager::listMountedObbs(SocketClient* cli) {
1825 FILE *fp = setmntent("/proc/mounts", "r");
1827 SLOGE("Error opening /proc/mounts (%s)", strerror(errno));
1831 // Create a string to compare against that has a trailing slash
1832 int loopDirLen = strlen(VolumeManager::LOOPDIR);
1833 char loopDir[loopDirLen + 2];
1834 strcpy(loopDir, VolumeManager::LOOPDIR);
1835 loopDir[loopDirLen++] = '/';
1836 loopDir[loopDirLen] = '\0';
1839 while ((mentry = getmntent(fp)) != NULL) {
1840 if (!strncmp(mentry->mnt_dir, loopDir, loopDirLen)) {
1841 int fd = open(mentry->mnt_fsname, O_RDONLY | O_CLOEXEC);
1843 struct loop_info64 li;
1844 if (ioctl(fd, LOOP_GET_STATUS64, &li) >= 0) {
1845 cli->sendMsg(ResponseCode::AsecListResult,
1846 (const char*) li.lo_file_name, false);
1856 extern "C" int vold_unmountAll(void) {
1857 VolumeManager *vm = VolumeManager::Instance();
1858 return vm->unmountAll();
1861 bool VolumeManager::isMountpointMounted(const char *mp)
1863 FILE *fp = setmntent("/proc/mounts", "r");
1865 SLOGE("Error opening /proc/mounts (%s)", strerror(errno));
1869 bool found_mp = false;
1871 while ((mentry = getmntent(fp)) != NULL) {
1872 if (strcmp(mentry->mnt_dir, mp) == 0) {
1881 int VolumeManager::mkdirs(char* path) {
1882 // Only offer to create directories for paths managed by vold
1883 if (strncmp(path, "/storage/", 9) == 0) {
1884 // fs_mkdirs() does symlink checking and relative path enforcement
1885 return fs_mkdirs(path, 0700);
1887 SLOGE("Failed to find mounted volume for %s", path);