diff --git a/cmds/dumpstate/Android.mk b/cmds/dumpstate/Android.mk
index 99024c3..efc050b 100644
--- a/cmds/dumpstate/Android.mk
+++ b/cmds/dumpstate/Android.mk
@@ -20,6 +20,7 @@
         libbase \
         libbinder \
         libcutils \
+        libdebuggerd_client \
         libdumpstateaidl \
         libdumpstateutil \
         liblog \
diff --git a/cmds/dumpstate/utils.cpp b/cmds/dumpstate/utils.cpp
index 6cc430d..c6dfa37 100644
--- a/cmds/dumpstate/utils.cpp
+++ b/cmds/dumpstate/utils.cpp
@@ -45,9 +45,9 @@
 #include <android-base/properties.h>
 #include <android-base/stringprintf.h>
 #include <android-base/strings.h>
-#include <cutils/debugger.h>
 #include <cutils/properties.h>
 #include <cutils/sockets.h>
+#include <debuggerd/client.h>
 #include <log/log.h>
 #include <private/android_filesystem_config.h>
 
@@ -864,9 +864,9 @@
     }
 
     /* create a new, empty traces.txt file to receive stack dumps */
-    int fd = TEMP_FAILURE_RETRY(open(traces_path.c_str(),
-                                     O_CREAT | O_WRONLY | O_TRUNC | O_NOFOLLOW | O_CLOEXEC,
-                                     0666)); /* -rw-rw-rw- */
+    int fd = TEMP_FAILURE_RETRY(
+        open(traces_path.c_str(), O_CREAT | O_WRONLY | O_APPEND | O_TRUNC | O_NOFOLLOW | O_CLOEXEC,
+             0666)); /* -rw-rw-rw- */
     if (fd < 0) {
         MYLOGE("%s: %s\n", traces_path.c_str(), strerror(errno));
         return nullptr;
diff --git a/cmds/installd/Android.bp b/cmds/installd/Android.bp
index 93174bf..33db6db 100644
--- a/cmds/installd/Android.bp
+++ b/cmds/installd/Android.bp
@@ -6,6 +6,8 @@
         "-Werror",
     ],
     srcs: [
+        "CacheItem.cpp",
+        "CacheTracker.cpp",
         "InstalldNativeService.cpp",
         "dexopt.cpp",
         "globals.cpp",
diff --git a/cmds/installd/CacheItem.cpp b/cmds/installd/CacheItem.cpp
new file mode 100644
index 0000000..d1bdded
--- /dev/null
+++ b/cmds/installd/CacheItem.cpp
@@ -0,0 +1,71 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "CacheItem.h"
+
+#include <stdint.h>
+#include <inttypes.h>
+
+#include <android-base/logging.h>
+#include <android-base/stringprintf.h>
+
+#include "utils.h"
+
+using android::base::StringPrintf;
+
+namespace android {
+namespace installd {
+
+CacheItem::CacheItem(const std::shared_ptr<CacheItem>& parent, FTSENT* p) : mParent(parent) {
+    level = p->fts_level;
+    directory = S_ISDIR(p->fts_statp->st_mode);
+    size = p->fts_statp->st_blocks * 512;
+    modified = p->fts_statp->st_mtime;
+    mName = p->fts_path;
+}
+
+CacheItem::~CacheItem() {
+}
+
+std::string CacheItem::toString() {
+    return StringPrintf("%s size=%" PRId64 " mod=%ld", buildPath().c_str(), size, modified);
+}
+
+std::string CacheItem::buildPath() {
+    std::string res = mName;
+    std::shared_ptr<CacheItem> parent = mParent;
+    while (parent) {
+        res.insert(0, parent->mName);
+        parent = parent->mParent;
+    }
+    return res;
+}
+
+int CacheItem::purge() {
+    auto path = buildPath();
+    if (directory) {
+        return delete_dir_contents_and_dir(path, true);
+    } else {
+        int res = unlink(path.c_str());
+        if (res != 0) {
+            PLOG(WARNING) << "Failed to unlink " << path;
+        }
+        return res;
+    }
+}
+
+}  // namespace installd
+}  // namespace android
diff --git a/cmds/installd/CacheItem.h b/cmds/installd/CacheItem.h
new file mode 100644
index 0000000..bec8bc8
--- /dev/null
+++ b/cmds/installd/CacheItem.h
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_INSTALLD_CACHE_ITEM_H
+#define ANDROID_INSTALLD_CACHE_ITEM_H
+
+#include <memory>
+#include <string>
+
+#include <fts.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <android-base/macros.h>
+
+namespace android {
+namespace installd {
+
+/**
+ * Single cache item that can be purged to free up space. This may be an
+ * isolated file, or an entire directory tree that should be atomically
+ * deleted.
+ */
+class CacheItem {
+public:
+    CacheItem(const std::shared_ptr<CacheItem>& parent, FTSENT* p);
+    ~CacheItem();
+
+    std::string toString();
+    std::string buildPath();
+
+    int purge();
+
+    short level;
+    bool directory;
+    int64_t size;
+    time_t modified;
+
+private:
+    std::shared_ptr<CacheItem> mParent;
+    std::string mName;
+
+    DISALLOW_COPY_AND_ASSIGN(CacheItem);
+};
+
+}  // namespace installd
+}  // namespace android
+
+#endif  // ANDROID_INSTALLD_CACHE_ITEM_H
diff --git a/cmds/installd/CacheTracker.cpp b/cmds/installd/CacheTracker.cpp
new file mode 100644
index 0000000..23c4330
--- /dev/null
+++ b/cmds/installd/CacheTracker.cpp
@@ -0,0 +1,162 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define ATRACE_TAG ATRACE_TAG_PACKAGE_MANAGER
+
+#include "CacheTracker.h"
+
+#include <fts.h>
+#include <sys/quota.h>
+#include <utils/Trace.h>
+
+#include <android-base/logging.h>
+#include <android-base/stringprintf.h>
+
+#include "utils.h"
+
+using android::base::StringPrintf;
+
+namespace android {
+namespace installd {
+
+CacheTracker::CacheTracker(userid_t userId, appid_t appId, const std::string& quotaDevice) :
+        cacheUsed(0), cacheQuota(0), mUserId(userId), mAppId(appId), mQuotaDevice(quotaDevice),
+        mItemsLoaded(false) {
+}
+
+CacheTracker::~CacheTracker() {
+}
+
+std::string CacheTracker::toString() {
+    return StringPrintf("UID=%d used=%" PRId64 " quota=%" PRId64 " ratio=%d",
+            multiuser_get_uid(mUserId, mAppId), cacheUsed, cacheQuota, getCacheRatio());
+}
+
+void CacheTracker::addDataPath(const std::string& dataPath) {
+    mDataPaths.push_back(dataPath);
+}
+
+void CacheTracker::loadStats() {
+    int cacheGid = multiuser_get_cache_gid(mUserId, mAppId);
+    if (cacheGid != -1 && !mQuotaDevice.empty()) {
+        ATRACE_BEGIN("loadStats quota");
+        struct dqblk dq;
+        if (quotactl(QCMD(Q_GETQUOTA, GRPQUOTA), mQuotaDevice.c_str(), cacheGid,
+                reinterpret_cast<char*>(&dq)) != 0) {
+            ATRACE_END();
+            if (errno != ESRCH) {
+                PLOG(ERROR) << "Failed to quotactl " << mQuotaDevice << " for GID " << cacheGid;
+            }
+        } else {
+            cacheUsed = dq.dqb_curspace;
+            ATRACE_END();
+            return;
+        }
+    }
+
+    ATRACE_BEGIN("loadStats tree");
+    cacheUsed = 0;
+    for (auto path : mDataPaths) {
+        auto cachePath = read_path_inode(path, "cache", kXattrInodeCache);
+        auto codeCachePath = read_path_inode(path, "code_cache", kXattrInodeCodeCache);
+        calculate_tree_size(cachePath, &cacheUsed);
+        calculate_tree_size(codeCachePath, &cacheUsed);
+    }
+    ATRACE_END();
+}
+
+void CacheTracker::loadItemsFrom(const std::string& path) {
+    FTS *fts;
+    FTSENT *p;
+    char *argv[] = { (char*) path.c_str(), nullptr };
+    if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_XDEV, NULL))) {
+        PLOG(WARNING) << "Failed to fts_open " << path;
+        return;
+    }
+    // TODO: add support for "user.atomic" and "user.tombstone" xattrs
+    while ((p = fts_read(fts)) != NULL) {
+        switch (p->fts_info) {
+        case FTS_D:
+            // Track the newest mtime of anything inside so we consider
+            // deleting the directory last
+            p->fts_number = p->fts_statp->st_mtime;
+            break;
+        case FTS_DP:
+            p->fts_statp->st_mtime = p->fts_number;
+
+            // Ignore the actual top-level cache directories
+            if (p->fts_level == 0) break;
+        case FTS_DEFAULT:
+        case FTS_F:
+        case FTS_SL:
+        case FTS_SLNONE:
+            // TODO: optimize path memory footprint
+            items.push_back(std::shared_ptr<CacheItem>(new CacheItem(nullptr, p)));
+
+            // Track the newest modified item under this tree
+            p->fts_parent->fts_number =
+                    std::max(p->fts_parent->fts_number, p->fts_statp->st_mtime);
+            break;
+        }
+    }
+    fts_close(fts);
+}
+
+void CacheTracker::loadItems() {
+    items.clear();
+
+    ATRACE_BEGIN("loadItems");
+    for (auto path : mDataPaths) {
+        loadItemsFrom(read_path_inode(path, "cache", kXattrInodeCache));
+        loadItemsFrom(read_path_inode(path, "code_cache", kXattrInodeCodeCache));
+    }
+    ATRACE_END();
+
+    ATRACE_BEGIN("sortItems");
+    auto cmp = [](std::shared_ptr<CacheItem> left, std::shared_ptr<CacheItem> right) {
+        // TODO: sort dotfiles last
+        // TODO: sort code_cache last
+        if (left->modified != right->modified) {
+            return (left->modified > right->modified);
+        }
+        if (left->level != right->level) {
+            return (left->level < right->level);
+        }
+        return left->directory;
+    };
+    std::sort(items.begin(), items.end(), cmp);
+    ATRACE_END();
+}
+
+void CacheTracker::ensureItems() {
+    if (mItemsLoaded) {
+        return;
+    } else {
+        loadItems();
+        mItemsLoaded = true;
+    }
+}
+
+int CacheTracker::getCacheRatio() {
+    if (cacheQuota == 0) {
+        return 0;
+    } else {
+        return (cacheUsed * 10000) / cacheQuota;
+    }
+}
+
+}  // namespace installd
+}  // namespace android
diff --git a/cmds/installd/CacheTracker.h b/cmds/installd/CacheTracker.h
new file mode 100644
index 0000000..91692d7
--- /dev/null
+++ b/cmds/installd/CacheTracker.h
@@ -0,0 +1,77 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_INSTALLD_CACHE_TRACKER_H
+#define ANDROID_INSTALLD_CACHE_TRACKER_H
+
+#include <memory>
+#include <string>
+#include <queue>
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <android-base/macros.h>
+#include <cutils/multiuser.h>
+
+#include "CacheItem.h"
+
+namespace android {
+namespace installd {
+
+/**
+ * Cache tracker for a single UID. Each tracker is used in two modes: first
+ * for loading lightweight "stats", and then by loading detailed "items"
+ * which can then be purged to free up space.
+ */
+class CacheTracker {
+public:
+    CacheTracker(userid_t userId, appid_t appId, const std::string& quotaDevice);
+    ~CacheTracker();
+
+    std::string toString();
+
+    void addDataPath(const std::string& dataPath);
+
+    void loadStats();
+    void loadItems();
+
+    void ensureItems();
+
+    int getCacheRatio();
+
+    int64_t cacheUsed;
+    int64_t cacheQuota;
+
+    std::vector<std::shared_ptr<CacheItem>> items;
+
+private:
+    userid_t mUserId;
+    appid_t mAppId;
+    std::string mQuotaDevice;
+    bool mItemsLoaded;
+
+    std::vector<std::string> mDataPaths;
+
+    void loadItemsFrom(const std::string& path);
+
+    DISALLOW_COPY_AND_ASSIGN(CacheTracker);
+};
+
+}  // namespace installd
+}  // namespace android
+
+#endif  // ANDROID_INSTALLD_CACHE_TRACKER_H
diff --git a/cmds/installd/InstalldNativeService.cpp b/cmds/installd/InstalldNativeService.cpp
index edcb3e9..45ebbf8 100644
--- a/cmds/installd/InstalldNativeService.cpp
+++ b/cmds/installd/InstalldNativeService.cpp
@@ -16,6 +16,8 @@
 
 #include "InstalldNativeService.h"
 
+#define ATRACE_TAG ATRACE_TAG_PACKAGE_MANAGER
+
 #include <errno.h>
 #include <inttypes.h>
 #include <fstream>
@@ -46,6 +48,7 @@
 #include <private/android_filesystem_config.h>
 #include <selinux/android.h>
 #include <system/thread_defs.h>
+#include <utils/Trace.h>
 
 #include "dexopt.h"
 #include "globals.h"
@@ -53,6 +56,7 @@
 #include "otapreopt_utils.h"
 #include "utils.h"
 
+#include "CacheTracker.h"
 #include "MatchExtensionGen.h"
 
 #ifndef LOG_TAG
@@ -60,6 +64,7 @@
 #endif
 
 using android::base::StringPrintf;
+using std::endl;
 
 namespace android {
 namespace installd {
@@ -84,6 +89,8 @@
 static constexpr int FLAG_CLEAR_CACHE_ONLY = 1 << 8;
 static constexpr int FLAG_CLEAR_CODE_CACHE_ONLY = 1 << 9;
 static constexpr int FLAG_USE_QUOTA = 1 << 12;
+static constexpr int FLAG_FREE_CACHE_V2 = 1 << 13;
+static constexpr int FLAG_FREE_CACHE_NOOP = 1 << 14;
 
 namespace {
 
@@ -189,15 +196,29 @@
 }
 
 status_t InstalldNativeService::dump(int fd, const Vector<String16> & /* args */) {
+    auto out = std::fstream(StringPrintf("/proc/self/fd/%d", fd));
     const binder::Status dump_permission = checkPermission(kDump);
     if (!dump_permission.isOk()) {
-        const String8 msg(dump_permission.toString8());
-        write(fd, msg.string(), msg.size());
+        out << dump_permission.toString8() << endl;
         return PERMISSION_DENIED;
     }
+    std::lock_guard<std::recursive_mutex> lock(mLock);
 
-    std::string msg = "installd is happy\n";
-    write(fd, msg.c_str(), strlen(msg.c_str()));
+    out << "installd is happy!" << endl;
+
+    out << endl << "Devices with quota support:" << endl;
+    for (const auto& n : mQuotaDevices) {
+        out << "    " << n.first << " = " << n.second << endl;
+    }
+
+    out << endl << "Per-UID cache quotas:" << endl;
+    for (const auto& n : mCacheQuotas) {
+        out << "    " << n.first << " = " << n.second << endl;
+    }
+
+    out << endl;
+    out.flush();
+
     return NO_ERROR;
 }
 
@@ -799,46 +820,164 @@
  * when just reading from the cache, which is pretty awful.
  */
 binder::Status InstalldNativeService::freeCache(const std::unique_ptr<std::string>& uuid,
-        int64_t freeStorageSize) {
+        int64_t freeStorageSize, int32_t flags) {
     ENFORCE_UID(AID_SYSTEM);
     CHECK_ARGUMENT_UUID(uuid);
     std::lock_guard<std::recursive_mutex> lock(mLock);
 
+    // TODO: remove this once framework is more robust
+    invalidateMounts();
+
     const char* uuid_ = uuid ? uuid->c_str() : nullptr;
-    cache_t* cache;
-    int64_t avail;
-
     auto data_path = create_data_path(uuid_);
+    auto device = findQuotaDeviceForUuid(uuid);
+    auto noop = (flags & FLAG_FREE_CACHE_NOOP);
 
-    avail = data_disk_free(data_path);
-    if (avail < 0) {
+    int64_t free = data_disk_free(data_path);
+    int64_t needed = freeStorageSize - free;
+    if (free < 0) {
         return error("Failed to determine free space for " + data_path);
-    }
-
-    ALOGI("free_cache(%" PRId64 ") avail %" PRId64 "\n", freeStorageSize, avail);
-    if (avail >= freeStorageSize) {
+    } else if (free >= freeStorageSize) {
         return ok();
     }
 
-    cache = start_cache_collection();
+    LOG(DEBUG) << "Found " << data_path << " with " << free << " free; caller requested "
+            << freeStorageSize;
 
-    auto users = get_known_users(uuid_);
-    for (auto user : users) {
-        add_cache_files(cache, create_data_user_ce_path(uuid_, user));
-        add_cache_files(cache, create_data_user_de_path(uuid_, user));
-        add_cache_files(cache,
-                StringPrintf("%s/Android/data", create_data_media_path(uuid_, user).c_str()));
+    if (flags & FLAG_FREE_CACHE_V2) {
+        // This new cache strategy fairly removes files from UIDs by deleting
+        // files from the UIDs which are most over their allocated quota
+
+        // 1. Create trackers for every known UID
+        ATRACE_BEGIN("create");
+        std::unordered_map<uid_t, std::shared_ptr<CacheTracker>> trackers;
+        for (auto user : get_known_users(uuid_)) {
+            FTS *fts;
+            FTSENT *p;
+            char *argv[] = {
+                    (char*) create_data_user_ce_path(uuid_, user).c_str(),
+                    (char*) create_data_user_de_path(uuid_, user).c_str(),
+                    nullptr
+            };
+            if (!(fts = fts_open(argv, FTS_PHYSICAL | FTS_XDEV, NULL))) {
+                return error("Failed to fts_open");
+            }
+            while ((p = fts_read(fts)) != NULL) {
+                if (p->fts_info == FTS_D && p->fts_level == 1) {
+                    uid_t uid = p->fts_statp->st_uid;
+                    auto search = trackers.find(uid);
+                    if (search != trackers.end()) {
+                        search->second->addDataPath(p->fts_path);
+                    } else {
+                        auto tracker = std::shared_ptr<CacheTracker>(new CacheTracker(
+                                multiuser_get_user_id(uid), multiuser_get_app_id(uid), device));
+                        tracker->addDataPath(p->fts_path);
+                        tracker->cacheQuota = mCacheQuotas[uid];
+                        if (tracker->cacheQuota == 0) {
+                            LOG(WARNING) << "UID " << uid << " has no cache quota; assuming 64MB";
+                            tracker->cacheQuota = 67108864;
+                        }
+                        trackers[uid] = tracker;
+                    }
+                    fts_set(fts, p, FTS_SKIP);
+                }
+            }
+            fts_close(fts);
+        }
+        ATRACE_END();
+
+        // 2. Populate tracker stats and insert into priority queue
+        ATRACE_BEGIN("populate");
+        auto cmp = [](std::shared_ptr<CacheTracker> left, std::shared_ptr<CacheTracker> right) {
+            return (left->getCacheRatio() < right->getCacheRatio());
+        };
+        std::priority_queue<std::shared_ptr<CacheTracker>,
+                std::vector<std::shared_ptr<CacheTracker>>, decltype(cmp)> queue(cmp);
+        for (const auto& it : trackers) {
+            it.second->loadStats();
+            queue.push(it.second);
+        }
+        ATRACE_END();
+
+        // 3. Bounce across the queue, freeing items from whichever tracker is
+        // the most over their assigned quota
+        ATRACE_BEGIN("bounce");
+        std::shared_ptr<CacheTracker> active;
+        while (active || !queue.empty()) {
+            // Find the best tracker to work with; this might involve swapping
+            // if the active tracker is no longer the most over quota
+            bool nextBetter = active && !queue.empty()
+                    && active->getCacheRatio() < queue.top()->getCacheRatio();
+            if (!active || nextBetter) {
+                if (active) {
+                    // Current tracker still has items, so we'll consider it
+                    // again later once it bubbles up to surface
+                    queue.push(active);
+                }
+                active = queue.top(); queue.pop();
+                active->ensureItems();
+                continue;
+            }
+
+            // If no items remain, go find another tracker
+            if (active->items.empty()) {
+                active = nullptr;
+                continue;
+            } else {
+                auto item = active->items.back();
+                active->items.pop_back();
+
+                LOG(DEBUG) << "Purging " << item->toString() << " from " << active->toString();
+                if (!noop) {
+                    item->purge();
+                }
+                active->cacheUsed -= item->size;
+                needed -= item->size;
+            }
+
+            // Verify that we're actually done before bailing, since sneaky
+            // apps might be using hardlinks
+            if (needed <= 0) {
+                free = data_disk_free(data_path);
+                needed = freeStorageSize - free;
+                if (needed <= 0) {
+                    break;
+                } else {
+                    LOG(WARNING) << "Expected to be done but still need " << needed;
+                }
+            }
+        }
+        ATRACE_END();
+
+    } else {
+        ATRACE_BEGIN("start");
+        cache_t* cache = start_cache_collection();
+        ATRACE_END();
+
+        ATRACE_BEGIN("add");
+        for (auto user : get_known_users(uuid_)) {
+            add_cache_files(cache, create_data_user_ce_path(uuid_, user));
+            add_cache_files(cache, create_data_user_de_path(uuid_, user));
+            add_cache_files(cache,
+                    StringPrintf("%s/Android/data", create_data_media_path(uuid_, user).c_str()));
+        }
+        ATRACE_END();
+
+        ATRACE_BEGIN("clear");
+        clear_cache_files(data_path, cache, freeStorageSize);
+        ATRACE_END();
+
+        ATRACE_BEGIN("finish");
+        finish_cache_collection(cache);
+        ATRACE_END();
     }
 
-    clear_cache_files(data_path, cache, freeStorageSize);
-    finish_cache_collection(cache);
-
-    avail = data_disk_free(data_path);
-    if (avail >= freeStorageSize) {
+    free = data_disk_free(data_path);
+    if (free >= freeStorageSize) {
         return ok();
     } else {
         return error(StringPrintf("Failed to free up %" PRId64 " on %s; final free space %" PRId64,
-                freeStorageSize, data_path.c_str(), avail));
+                freeStorageSize, data_path.c_str(), free));
     }
 }
 
@@ -889,28 +1028,6 @@
 }
 #endif
 
-static std::string findDeviceForUuid(const std::unique_ptr<std::string>& uuid) {
-    auto path = create_data_path(uuid ? uuid->c_str() : nullptr);
-    std::ifstream in("/proc/mounts");
-    if (!in.is_open()) {
-        PLOG(ERROR) << "Failed to read mounts";
-        return "";
-    }
-    std::string source;
-    std::string target;
-    while (!in.eof()) {
-        std::getline(in, source, ' ');
-        std::getline(in, target, ' ');
-        if (target == path) {
-            return source;
-        }
-        // Skip to next line
-        std::getline(in, source);
-    }
-    PLOG(ERROR) << "Failed to resolve block device for " << path;
-    return "";
-}
-
 static void collectQuotaStats(const std::string& device, int32_t userId,
         int32_t appId, struct stats* stats, struct stats* extStats ATTRIBUTE_UNUSED) {
     if (device.empty()) return;
@@ -965,11 +1082,6 @@
 #endif
 }
 
-static void collectQuotaStats(const std::unique_ptr<std::string>& uuid, int32_t userId,
-        int32_t appId, struct stats* stats, struct stats* extStats) {
-    collectQuotaStats(findDeviceForUuid(uuid), userId, appId, stats, extStats);
-}
-
 static void collectManualStats(const std::string& path, struct stats* stats) {
     DIR *d;
     int dfd;
@@ -1091,56 +1203,73 @@
 
     const char* uuid_ = uuid ? uuid->c_str() : nullptr;
 
+    auto device = findQuotaDeviceForUuid(uuid);
+    if (device.empty()) {
+        flags &= ~FLAG_USE_QUOTA;
+    }
+
+    ATRACE_BEGIN("obb");
     for (auto packageName : packageNames) {
         auto obbCodePath = create_data_media_obb_path(uuid_, packageName.c_str());
         calculate_tree_size(obbCodePath, &extStats.codeSize);
     }
+    ATRACE_END();
 
     if (flags & FLAG_USE_QUOTA && appId >= AID_APP_START) {
+        ATRACE_BEGIN("code");
         for (auto codePath : codePaths) {
             calculate_tree_size(codePath, &stats.codeSize, -1,
                     multiuser_get_shared_gid(userId, appId));
         }
+        ATRACE_END();
 
-        collectQuotaStats(uuid, userId, appId, &stats, &extStats);
+        ATRACE_BEGIN("quota");
+        collectQuotaStats(device, userId, appId, &stats, &extStats);
+        ATRACE_END();
 
     } else {
+        ATRACE_BEGIN("code");
         for (auto codePath : codePaths) {
             calculate_tree_size(codePath, &stats.codeSize);
         }
+        ATRACE_END();
 
         for (size_t i = 0; i < packageNames.size(); i++) {
             const char* pkgname = packageNames[i].c_str();
 
+            ATRACE_BEGIN("data");
             auto cePath = create_data_user_ce_package_path(uuid_, userId, pkgname, ceDataInodes[i]);
             collectManualStats(cePath, &stats);
-
             auto dePath = create_data_user_de_package_path(uuid_, userId, pkgname);
             collectManualStats(dePath, &stats);
+            ATRACE_END();
 
+            ATRACE_BEGIN("profiles");
             auto userProfilePath = create_data_user_profile_package_path(userId, pkgname);
             calculate_tree_size(userProfilePath, &stats.dataSize);
-
             auto refProfilePath = create_data_ref_profile_package_path(pkgname);
             calculate_tree_size(refProfilePath, &stats.codeSize);
+            ATRACE_END();
 
 #if MEASURE_EXTERNAL
+            ATRACE_BEGIN("external");
             auto extPath = create_data_media_package_path(uuid_, userId, pkgname, "data");
             collectManualStats(extPath, &extStats);
-
             auto mediaPath = create_data_media_package_path(uuid_, userId, pkgname, "media");
             calculate_tree_size(mediaPath, &extStats.dataSize);
+            ATRACE_END();
 #endif
         }
 
+        ATRACE_BEGIN("dalvik");
         int32_t sharedGid = multiuser_get_shared_gid(userId, appId);
         if (sharedGid != -1) {
             calculate_tree_size(create_data_dalvik_cache_path(), &stats.codeSize,
                     sharedGid, -1);
         }
-
         calculate_tree_size(create_data_misc_foreign_dex_path(userId), &stats.dataSize,
                 multiuser_get_uid(userId, appId), -1);
+        ATRACE_END();
     }
 
     std::vector<int64_t> ret;
@@ -1178,35 +1307,49 @@
 
     const char* uuid_ = uuid ? uuid->c_str() : nullptr;
 
+    ATRACE_BEGIN("obb");
     auto obbPath = create_data_path(uuid_) + "/media/obb";
     calculate_tree_size(obbPath, &extStats.codeSize);
+    ATRACE_END();
+
+    auto device = findQuotaDeviceForUuid(uuid);
+    if (device.empty()) {
+        flags &= ~FLAG_USE_QUOTA;
+    }
 
     if (flags & FLAG_USE_QUOTA) {
+        ATRACE_BEGIN("code");
         calculate_tree_size(create_data_app_path(uuid_), &stats.codeSize, -1, -1, true);
+        ATRACE_END();
 
+        ATRACE_BEGIN("data");
         auto cePath = create_data_user_ce_path(uuid_, userId);
         collectManualStatsForUser(cePath, &stats, true);
-
         auto dePath = create_data_user_de_path(uuid_, userId);
         collectManualStatsForUser(dePath, &stats, true);
+        ATRACE_END();
 
+        ATRACE_BEGIN("profile");
         auto userProfilePath = create_data_user_profile_path(userId);
         calculate_tree_size(userProfilePath, &stats.dataSize, -1, -1, true);
-
         auto refProfilePath = create_data_ref_profile_path();
         calculate_tree_size(refProfilePath, &stats.codeSize, -1, -1, true);
+        ATRACE_END();
 
 #if MEASURE_EXTERNAL
+        ATRACE_BEGIN("external");
         // TODO: measure external storage paths
+        ATRACE_END();
 #endif
 
+        ATRACE_BEGIN("dalvik");
         calculate_tree_size(create_data_dalvik_cache_path(), &stats.codeSize,
                 -1, -1, true);
-
         calculate_tree_size(create_data_misc_foreign_dex_path(userId), &stats.dataSize,
                 -1, -1, true);
+        ATRACE_END();
 
-        auto device = findDeviceForUuid(uuid);
+        ATRACE_BEGIN("quota");
         for (auto appId : appIds) {
             if (appId >= AID_APP_START) {
                 collectQuotaStats(device, userId, appId, &stats, &extStats);
@@ -1216,28 +1359,36 @@
 #endif
             }
         }
+        ATRACE_END();
     } else {
+        ATRACE_BEGIN("code");
         calculate_tree_size(create_data_app_path(uuid_), &stats.codeSize);
+        ATRACE_END();
 
+        ATRACE_BEGIN("data");
         auto cePath = create_data_user_ce_path(uuid_, userId);
         collectManualStatsForUser(cePath, &stats);
-
         auto dePath = create_data_user_de_path(uuid_, userId);
         collectManualStatsForUser(dePath, &stats);
+        ATRACE_END();
 
+        ATRACE_BEGIN("profile");
         auto userProfilePath = create_data_user_profile_path(userId);
         calculate_tree_size(userProfilePath, &stats.dataSize);
-
         auto refProfilePath = create_data_ref_profile_path();
         calculate_tree_size(refProfilePath, &stats.codeSize);
+        ATRACE_END();
 
 #if MEASURE_EXTERNAL
+        ATRACE_BEGIN("external");
         // TODO: measure external storage paths
+        ATRACE_END();
 #endif
 
+        ATRACE_BEGIN("dalvik");
         calculate_tree_size(create_data_dalvik_cache_path(), &stats.codeSize);
-
         calculate_tree_size(create_data_misc_foreign_dex_path(userId), &stats.dataSize);
+        ATRACE_END();
     }
 
     std::vector<int64_t> ret;
@@ -1274,11 +1425,14 @@
     int64_t videoSize = 0;
     int64_t imageSize = 0;
 
+    auto device = findQuotaDeviceForUuid(uuid);
+    if (device.empty()) {
+        flags &= ~FLAG_USE_QUOTA;
+    }
+
     if (flags & FLAG_USE_QUOTA) {
         struct dqblk dq;
 
-        auto device = findDeviceForUuid(uuid);
-
         uid_t uid = multiuser_get_uid(userId, AID_MEDIA_RW);
         if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), device.c_str(), uid,
                 reinterpret_cast<char*>(&dq)) != 0) {
@@ -1364,6 +1518,18 @@
     return ok();
 }
 
+binder::Status InstalldNativeService::setAppQuota(const std::unique_ptr<std::string>& uuid,
+        int32_t userId, int32_t appId, int64_t cacheQuota) {
+    ENFORCE_UID(AID_SYSTEM);
+    CHECK_ARGUMENT_UUID(uuid);
+    std::lock_guard<std::recursive_mutex> lock(mLock);
+
+    int32_t uid = multiuser_get_uid(userId, appId);
+    mCacheQuotas[uid] = cacheQuota;
+
+    return ok();
+}
+
 // Dumps the contents of a profile file, using pkgname's dex files for pretty
 // printing the result.
 binder::Status InstalldNativeService::dumpProfiles(int32_t uid, const std::string& packageName,
@@ -1777,5 +1943,42 @@
     return res ? ok() : error();
 }
 
+binder::Status InstalldNativeService::invalidateMounts() {
+    ENFORCE_UID(AID_SYSTEM);
+    std::lock_guard<std::recursive_mutex> lock(mLock);
+
+    mQuotaDevices.clear();
+
+    std::ifstream in("/proc/mounts");
+    if (!in.is_open()) {
+        return error("Failed to read mounts");
+    }
+
+    std::string source;
+    std::string target;
+    std::string ignored;
+    struct dqblk dq;
+    while (!in.eof()) {
+        std::getline(in, source, ' ');
+        std::getline(in, target, ' ');
+        std::getline(in, ignored);
+
+        if (source.compare(0, 11, "/dev/block/") == 0) {
+            if (quotactl(QCMD(Q_GETQUOTA, USRQUOTA), source.c_str(), 0,
+                    reinterpret_cast<char*>(&dq)) == 0) {
+                LOG(DEBUG) << "Found " << source << " with quota";
+                mQuotaDevices[target] = source;
+            }
+        }
+    }
+    return ok();
+}
+
+std::string InstalldNativeService::findQuotaDeviceForUuid(
+        const std::unique_ptr<std::string>& uuid) {
+    auto path = create_data_path(uuid ? uuid->c_str() : nullptr);
+    return mQuotaDevices[path];
+}
+
 }  // namespace installd
 }  // namespace android
diff --git a/cmds/installd/InstalldNativeService.h b/cmds/installd/InstalldNativeService.h
index ec81462..0a9f12f 100644
--- a/cmds/installd/InstalldNativeService.h
+++ b/cmds/installd/InstalldNativeService.h
@@ -22,7 +22,9 @@
 #include <unistd.h>
 
 #include <vector>
+#include <unordered_map>
 
+#include <android-base/macros.h>
 #include <binder/BinderService.h>
 #include <cutils/multiuser.h>
 
@@ -66,6 +68,9 @@
     binder::Status getExternalSize(const std::unique_ptr<std::string>& uuid,
             int32_t userId, int32_t flags, std::vector<int64_t>* _aidl_return);
 
+    binder::Status setAppQuota(const std::unique_ptr<std::string>& uuid,
+            int32_t userId, int32_t appId, int64_t cacheQuota);
+
     binder::Status moveCompleteApp(const std::unique_ptr<std::string>& fromUuid,
             const std::unique_ptr<std::string>& toUuid, const std::string& packageName,
             const std::string& dataAppName, int32_t appId, const std::string& seInfo,
@@ -89,7 +94,8 @@
             int32_t uid);
     binder::Status rmPackageDir(const std::string& packageDir);
     binder::Status markBootComplete(const std::string& instructionSet);
-    binder::Status freeCache(const std::unique_ptr<std::string>& uuid, int64_t freeStorageSize);
+    binder::Status freeCache(const std::unique_ptr<std::string>& uuid, int64_t freeStorageSize,
+            int32_t flags);
     binder::Status linkNativeLibraryDirectory(const std::unique_ptr<std::string>& uuid,
             const std::string& packageName, const std::string& nativeLibPath32, int32_t userId);
     binder::Status createOatDir(const std::string& oatDir, const std::string& instructionSet);
@@ -100,8 +106,17 @@
     binder::Status deleteOdex(const std::string& apkPath, const std::string& instructionSet,
             const std::string& outputPath);
 
+    binder::Status invalidateMounts();
+
 private:
     std::recursive_mutex mLock;
+
+    /* Map from mount point to underlying device node */
+    std::unordered_map<std::string, std::string> mQuotaDevices;
+    /* Map from UID to cache quota size */
+    std::unordered_map<uid_t, int64_t> mCacheQuotas;
+
+    std::string findQuotaDeviceForUuid(const std::unique_ptr<std::string>& uuid);
 };
 
 }  // namespace installd
diff --git a/cmds/installd/binder/android/os/IInstalld.aidl b/cmds/installd/binder/android/os/IInstalld.aidl
index 6e4d7fa..aa5e4f2 100644
--- a/cmds/installd/binder/android/os/IInstalld.aidl
+++ b/cmds/installd/binder/android/os/IInstalld.aidl
@@ -38,6 +38,8 @@
     long[] getUserSize(@nullable @utf8InCpp String uuid, int userId, int flags, in int[] appIds);
     long[] getExternalSize(@nullable @utf8InCpp String uuid, int userId, int flags);
 
+    void setAppQuota(@nullable @utf8InCpp String uuid, int userId, int appId, long cacheQuota);
+
     void moveCompleteApp(@nullable @utf8InCpp String fromUuid, @nullable @utf8InCpp String toUuid,
             @utf8InCpp String packageName, @utf8InCpp String dataAppName, int appId,
             @utf8InCpp String seInfo, int targetSdkVersion);
@@ -58,7 +60,7 @@
     void idmap(@utf8InCpp String targetApkPath, @utf8InCpp String overlayApkPath, int uid);
     void rmPackageDir(@utf8InCpp String packageDir);
     void markBootComplete(@utf8InCpp String instructionSet);
-    void freeCache(@nullable @utf8InCpp String uuid, long freeStorageSize);
+    void freeCache(@nullable @utf8InCpp String uuid, long freeStorageSize, int flags);
     void linkNativeLibraryDirectory(@nullable @utf8InCpp String uuid,
             @utf8InCpp String packageName, @utf8InCpp String nativeLibPath32, int userId);
     void createOatDir(@utf8InCpp String oatDir, @utf8InCpp String instructionSet);
@@ -68,4 +70,6 @@
             @utf8InCpp String outputPath);
     void deleteOdex(@utf8InCpp String apkPath, @utf8InCpp String instructionSet,
             @utf8InCpp String outputPath);
+
+    void invalidateMounts();
 }
diff --git a/cmds/installd/dexopt.cpp b/cmds/installd/dexopt.cpp
index 76d5695..1565d0d 100644
--- a/cmds/installd/dexopt.cpp
+++ b/cmds/installd/dexopt.cpp
@@ -904,7 +904,7 @@
 //
 // Usage example:
 //
-//   Dex2oatFileWrapper<std::function<void ()>> file(open(...),
+//   Dex2oatFileWrapper file(open(...),
 //                                                   [name]() {
 //                                                       unlink(name.c_str());
 //                                                   });
@@ -927,14 +927,30 @@
 //   // At this point, when the Dex2oatFileWrapper is destructed, the cleanup function will not run
 //   // (leaving the file around; after the fd is closed).
 //
-template <typename Cleanup>
 class Dex2oatFileWrapper {
  public:
-    Dex2oatFileWrapper() : value_(-1), cleanup_(), do_cleanup_(true) {
+    Dex2oatFileWrapper() : value_(-1), cleanup_(), do_cleanup_(true), auto_close_(true) {
     }
 
-    Dex2oatFileWrapper(int value, Cleanup cleanup)
-            : value_(value), cleanup_(cleanup), do_cleanup_(true) {}
+    Dex2oatFileWrapper(int value, std::function<void ()> cleanup)
+            : value_(value), cleanup_(cleanup), do_cleanup_(true), auto_close_(true) {}
+
+    Dex2oatFileWrapper(Dex2oatFileWrapper&& other) {
+        value_ = other.value_;
+        cleanup_ = other.cleanup_;
+        do_cleanup_ = other.do_cleanup_;
+        auto_close_ = other.auto_close_;
+        other.release();
+    }
+
+    Dex2oatFileWrapper& operator=(Dex2oatFileWrapper&& other) {
+        value_ = other.value_;
+        cleanup_ = other.cleanup_;
+        do_cleanup_ = other.do_cleanup_;
+        auto_close_ = other.auto_close_;
+        other.release();
+        return *this;
+    }
 
     ~Dex2oatFileWrapper() {
         reset(-1);
@@ -949,7 +965,7 @@
     }
 
     void reset(int new_value) {
-        if (value_ >= 0) {
+        if (auto_close_ && value_ >= 0) {
             close(value_);
         }
         if (do_cleanup_ && cleanup_ != nullptr) {
@@ -959,8 +975,8 @@
         value_ = new_value;
     }
 
-    void reset(int new_value, Cleanup new_cleanup) {
-        if (value_ >= 0) {
+    void reset(int new_value, std::function<void ()> new_cleanup) {
+        if (auto_close_ && value_ >= 0) {
             close(value_);
         }
         if (do_cleanup_ && cleanup_ != nullptr) {
@@ -971,77 +987,125 @@
         cleanup_ = new_cleanup;
     }
 
+    void DisableAutoClose() {
+        auto_close_ = false;
+    }
+
  private:
+    void release() {
+        value_ = -1;
+        do_cleanup_ = false;
+        cleanup_ = nullptr;
+    }
     int value_;
-    Cleanup cleanup_;
+    std::function<void ()> cleanup_;
     bool do_cleanup_;
+    bool auto_close_;
 };
 
-int dexopt(const char* apk_path, uid_t uid, const char* pkgname, const char* instruction_set,
-        int dexopt_needed, const char* oat_dir, int dexopt_flags,const char* compiler_filter,
-        const char* volume_uuid ATTRIBUTE_UNUSED, const char* shared_libraries) {
-    bool is_public = ((dexopt_flags & DEXOPT_PUBLIC) != 0);
-    bool vm_safe_mode = (dexopt_flags & DEXOPT_SAFEMODE) != 0;
-    bool debuggable = (dexopt_flags & DEXOPT_DEBUGGABLE) != 0;
-    bool boot_complete = (dexopt_flags & DEXOPT_BOOTCOMPLETE) != 0;
-    bool profile_guided = (dexopt_flags & DEXOPT_PROFILE_GUIDED) != 0;
+// (re)Creates the app image if needed.
+Dex2oatFileWrapper maybe_open_app_image(const char* out_oat_path, bool profile_guided,
+        bool is_public, int uid) {
+    // Use app images only if it is enabled (by a set image format) and we are compiling
+    // profile-guided (so the app image doesn't conservatively contain all classes).
+    if (!profile_guided) {
+        return Dex2oatFileWrapper();
+    }
 
-    CHECK(pkgname != nullptr);
-    CHECK(pkgname[0] != 0);
+    const std::string image_path = create_image_filename(out_oat_path);
+    if (image_path.empty()) {
+        // Happens when the out_oat_path has an unknown extension.
+        return Dex2oatFileWrapper();
+    }
+    char app_image_format[kPropertyValueMax];
+    bool have_app_image_format =
+            get_property("dalvik.vm.appimageformat", app_image_format, NULL) > 0;
+    if (!have_app_image_format) {
+        return Dex2oatFileWrapper();
+    }
+    // Recreate is true since we do not want to modify a mapped image. If the app is
+    // already running and we modify the image file, it can cause crashes (b/27493510).
+    Dex2oatFileWrapper wrapper_fd(
+            open_output_file(image_path.c_str(), true /*recreate*/, 0600 /*permissions*/),
+            [image_path]() { unlink(image_path.c_str()); });
+    if (wrapper_fd.get() < 0) {
+        // Could not create application image file. Go on since we can compile without it.
+        LOG(ERROR) << "installd could not create '" << image_path
+                << "' for image file during dexopt";
+         // If we have a valid image file path but no image fd, explicitly erase the image file.
+        if (unlink(image_path.c_str()) < 0) {
+            if (errno != ENOENT) {
+                PLOG(ERROR) << "Couldn't unlink image file " << image_path;
+            }
+        }
+    } else if (!set_permissions_and_ownership(
+                wrapper_fd.get(), is_public, uid, image_path.c_str())) {
+        ALOGE("installd cannot set owner '%s' for image during dexopt\n", image_path.c_str());
+        wrapper_fd.reset(-1);
+    }
 
+    return wrapper_fd;
+}
+
+// Creates the dexopt swap file if necessary and return its fd.
+// Returns -1 if there's no need for a swap or in case of errors.
+base::unique_fd maybe_open_dexopt_swap_file(const char* out_oat_path) {
+    if (!ShouldUseSwapFileForDexopt()) {
+        return base::unique_fd();
+    }
+    // Make sure there really is enough space.
+    char swap_file_name[PKG_PATH_MAX];
+    strcpy(swap_file_name, out_oat_path);
+    if (!add_extension_to_file_name(swap_file_name, ".swap")) {
+        return base::unique_fd();
+    }
+    base::unique_fd swap_fd(open_output_file(
+            swap_file_name, /*recreate*/true, /*permissions*/0600));
+    if (swap_fd.get() < 0) {
+        // Could not create swap file. Optimistically go on and hope that we can compile
+        // without it.
+        ALOGE("installd could not create '%s' for swap during dexopt\n", swap_file_name);
+    } else {
+        // Immediately unlink. We don't really want to hit flash.
+        if (unlink(swap_file_name) < 0) {
+            PLOG(ERROR) << "Couldn't unlink swap file " << swap_file_name;
+        }
+    }
+    return swap_fd;
+}
+
+// Opens the reference profiles if needed.
+// Note that the reference profile might not exist so it's OK if the fd will be -1.
+Dex2oatFileWrapper maybe_open_reference_profile(const char* pkgname, bool profile_guided,
+        bool is_public, int uid) {
     // Public apps should not be compiled with profile information ever. Same goes for the special
     // package '*' used for the system server.
-    Dex2oatFileWrapper<std::function<void ()>> reference_profile_fd;
-    if (!is_public && pkgname[0] != '*') {
+    if (profile_guided && !is_public && (pkgname[0] != '*')) {
         // Open reference profile in read only mode as dex2oat does not get write permissions.
         const std::string pkgname_str(pkgname);
-        reference_profile_fd.reset(open_reference_profile(uid, pkgname, /*read_write*/ false),
-                                   [pkgname_str]() {
-                                       clear_reference_profile(pkgname_str.c_str());
-                                   });
-        // Note: it's OK to not find a profile here.
+        return Dex2oatFileWrapper(
+                open_reference_profile(uid, pkgname, /*read_write*/ false),
+                [pkgname_str]() {
+                    clear_reference_profile(pkgname_str.c_str());
+                });
+    } else {
+        return Dex2oatFileWrapper();
     }
+}
 
-    if ((dexopt_flags & ~DEXOPT_MASK) != 0) {
-        LOG_FATAL("dexopt flags contains unknown fields\n");
-    }
-
-    char out_oat_path[PKG_PATH_MAX];
-    if (!create_oat_out_path(apk_path, instruction_set, oat_dir, out_oat_path)) {
-        return false;
-    }
-
-    const char *input_file = apk_path;
-    struct stat input_stat;
-    memset(&input_stat, 0, sizeof(input_stat));
-    stat(input_file, &input_stat);
-
-    // Open the input file.
-    base::unique_fd input_fd(open(input_file, O_RDONLY, 0));
-    if (input_fd.get() < 0) {
-        ALOGE("installd cannot open '%s' for input during dexopt\n", input_file);
-        return -1;
-    }
-
-    // Create the output OAT file.
-    const std::string out_oat_path_str(out_oat_path);
-    Dex2oatFileWrapper<std::function<void ()>> out_oat_fd(
-            open_output_file(out_oat_path, /*recreate*/true, /*permissions*/0644),
-            [out_oat_path_str]() { unlink(out_oat_path_str.c_str()); });
-    if (out_oat_fd.get() < 0) {
-        ALOGE("installd cannot open '%s' for output during dexopt\n", out_oat_path);
-        return -1;
-    }
-    if (!set_permissions_and_ownership(out_oat_fd.get(), is_public, uid, out_oat_path)) {
-        return -1;
-    }
-
+// Opens the vdex files and assigns the input fd to in_vdex_wrapper_fd and the output fd to
+// out_vdex_wrapper_fd. Returns true for success or false in case of errors.
+bool open_vdex_files(const char* apk_path, const char* out_oat_path, int dexopt_needed,
+        const char* instruction_set, bool is_public, int uid,
+        Dex2oatFileWrapper* in_vdex_wrapper_fd,
+        Dex2oatFileWrapper* out_vdex_wrapper_fd) {
+    CHECK(in_vdex_wrapper_fd != nullptr);
+    CHECK(out_vdex_wrapper_fd != nullptr);
     // Open the existing VDEX. We do this before creating the new output VDEX, which will
     // unlink the old one.
     char in_odex_path[PKG_PATH_MAX];
     int dexopt_action = abs(dexopt_needed);
     bool is_odex_location = dexopt_needed < 0;
-    base::unique_fd in_vdex_fd;
     std::string in_vdex_path_str;
     if (dexopt_action != DEX2OAT_FROM_SCRATCH) {
         // Open the possibly existing vdex. If none exist, we pass -1 to dex2oat for input-vdex-fd.
@@ -1051,7 +1115,7 @@
                 path = in_odex_path;
             } else {
                 ALOGE("installd cannot compute input vdex location for '%s'\n", apk_path);
-                return -1;
+                return false;
             }
         } else {
             path = out_oat_path;
@@ -1059,108 +1123,138 @@
         in_vdex_path_str = create_vdex_filename(path);
         if (in_vdex_path_str.empty()) {
             ALOGE("installd cannot compute input vdex location for '%s'\n", path);
-            return -1;
+            return false;
         }
         if (dexopt_action == DEX2OAT_FOR_BOOT_IMAGE) {
             // When we dex2oat because iof boot image change, we are going to update
             // in-place the vdex file.
-            in_vdex_fd.reset(open(in_vdex_path_str.c_str(), O_RDWR, 0));
+            in_vdex_wrapper_fd->reset(open(in_vdex_path_str.c_str(), O_RDWR, 0));
         } else {
-            in_vdex_fd.reset(open(in_vdex_path_str.c_str(), O_RDONLY, 0));
+            in_vdex_wrapper_fd->reset(open(in_vdex_path_str.c_str(), O_RDONLY, 0));
         }
     }
 
     // Infer the name of the output VDEX and create it.
-    const std::string out_vdex_path_str = create_vdex_filename(out_oat_path_str);
+    const std::string out_vdex_path_str = create_vdex_filename(out_oat_path);
     if (out_vdex_path_str.empty()) {
-        return -1;
+        return false;
     }
-    Dex2oatFileWrapper<std::function<void ()>> out_vdex_wrapper_fd;
-    int out_vdex_fd = -1;
 
     // If we are compiling because the boot image is out of date, we do not
     // need to recreate a vdex, and can use the same existing one.
     if (dexopt_action == DEX2OAT_FOR_BOOT_IMAGE &&
-            in_vdex_fd != -1 &&
+            in_vdex_wrapper_fd->get() != -1 &&
             in_vdex_path_str == out_vdex_path_str) {
-        out_vdex_fd = in_vdex_fd;
+        out_vdex_wrapper_fd->reset(in_vdex_wrapper_fd->get());
+        // Disable auto close for the in wrapper fd (it will be done when destructing the out
+        // wrapper).
+        in_vdex_wrapper_fd->DisableAutoClose();
     } else {
-        out_vdex_wrapper_fd.reset(
+        out_vdex_wrapper_fd->reset(
               open_output_file(out_vdex_path_str.c_str(), /*recreate*/true, /*permissions*/0644),
               [out_vdex_path_str]() { unlink(out_vdex_path_str.c_str()); });
-        out_vdex_fd = out_vdex_wrapper_fd.get();
-        if (out_vdex_fd < 0) {
-            ALOGE("installd cannot open '%s' for output during dexopt\n", out_vdex_path_str.c_str());
-            return -1;
+        if (out_vdex_wrapper_fd->get() < 0) {
+            ALOGE("installd cannot open vdex'%s' during dexopt\n", out_vdex_path_str.c_str());
+            return false;
         }
     }
-    if (!set_permissions_and_ownership(out_vdex_fd, is_public,
-                uid, out_vdex_path_str.c_str())) {
+    if (!set_permissions_and_ownership(out_vdex_wrapper_fd->get(), is_public, uid,
+            out_vdex_path_str.c_str())) {
+        ALOGE("installd cannot set owner '%s' for vdex during dexopt\n", out_vdex_path_str.c_str());
+        return false;
+    }
+
+    // If we got here we successfully opened the vdex files.
+    return true;
+}
+
+// Opens the output oat file for the given apk.
+// If successful it stores the output path into out_oat_path and returns true.
+Dex2oatFileWrapper open_oat_out_file(const char* apk_path, const char* oat_dir,
+        bool is_public, int uid, const char* instruction_set, char* out_oat_path) {
+    if (!create_oat_out_path(apk_path, instruction_set, oat_dir, out_oat_path)) {
+        return Dex2oatFileWrapper();
+    }
+    const std::string out_oat_path_str(out_oat_path);
+    Dex2oatFileWrapper wrapper_fd(
+            open_output_file(out_oat_path, /*recreate*/true, /*permissions*/0644),
+            [out_oat_path_str]() { unlink(out_oat_path_str.c_str()); });
+    if (wrapper_fd.get() < 0) {
+        ALOGE("installd cannot open '%s' for output during dexopt\n", out_oat_path);
+    } else if (!set_permissions_and_ownership(wrapper_fd.get(), is_public, uid, out_oat_path)) {
+        ALOGE("installd cannot set owner '%s' for output during dexopt\n", out_oat_path);
+        wrapper_fd.reset(-1);
+    }
+    return wrapper_fd;
+}
+
+// Updates the access times of out_oat_path based on those from apk_path.
+void update_out_oat_access_times(const char* apk_path, const char* out_oat_path) {
+    struct stat input_stat;
+    memset(&input_stat, 0, sizeof(input_stat));
+    if (stat(apk_path, &input_stat) != 0) {
+        PLOG(ERROR) << "Could not stat " << apk_path << " during dexopt";
+        return;
+    }
+
+    struct utimbuf ut;
+    ut.actime = input_stat.st_atime;
+    ut.modtime = input_stat.st_mtime;
+    if (utime(out_oat_path, &ut) != 0) {
+        PLOG(WARNING) << "Could not update access times for " << apk_path << " during dexopt";
+    }
+}
+
+int dexopt(const char* apk_path, uid_t uid, const char* pkgname, const char* instruction_set,
+        int dexopt_needed, const char* oat_dir, int dexopt_flags,const char* compiler_filter,
+        const char* volume_uuid ATTRIBUTE_UNUSED, const char* shared_libraries) {
+    CHECK(pkgname != nullptr);
+    CHECK(pkgname[0] != 0);
+    if ((dexopt_flags & ~DEXOPT_MASK) != 0) {
+        LOG_FATAL("dexopt flags contains unknown fields\n");
+    }
+
+    bool is_public = ((dexopt_flags & DEXOPT_PUBLIC) != 0);
+    bool vm_safe_mode = (dexopt_flags & DEXOPT_SAFEMODE) != 0;
+    bool debuggable = (dexopt_flags & DEXOPT_DEBUGGABLE) != 0;
+    bool boot_complete = (dexopt_flags & DEXOPT_BOOTCOMPLETE) != 0;
+    bool profile_guided = (dexopt_flags & DEXOPT_PROFILE_GUIDED) != 0;
+
+    // Open the input file.
+    base::unique_fd input_fd(open(apk_path, O_RDONLY, 0));
+    if (input_fd.get() < 0) {
+        ALOGE("installd cannot open '%s' for input during dexopt\n", apk_path);
+        return -1;
+    }
+
+    // Create the output OAT file.
+    char out_oat_path[PKG_PATH_MAX];
+    Dex2oatFileWrapper out_oat_fd = open_oat_out_file(apk_path, oat_dir, is_public, uid,
+            instruction_set, out_oat_path);
+    if (out_oat_fd.get() < 0) {
+        return -1;
+    }
+
+    // Open vdex files.
+    Dex2oatFileWrapper in_vdex_fd;
+    Dex2oatFileWrapper out_vdex_fd;
+    if (!open_vdex_files(apk_path, out_oat_path, dexopt_needed, instruction_set, is_public, uid,
+            &in_vdex_fd, &out_vdex_fd)) {
         return -1;
     }
 
     // Create a swap file if necessary.
-    base::unique_fd swap_fd;
-    if (ShouldUseSwapFileForDexopt()) {
-        // Make sure there really is enough space.
-        char swap_file_name[PKG_PATH_MAX];
-        strcpy(swap_file_name, out_oat_path);
-        if (add_extension_to_file_name(swap_file_name, ".swap")) {
-            swap_fd.reset(open_output_file(swap_file_name, /*recreate*/true, /*permissions*/0600));
-        }
-        if (swap_fd.get() < 0) {
-            // Could not create swap file. Optimistically go on and hope that we can compile
-            // without it.
-            ALOGE("installd could not create '%s' for swap during dexopt\n", swap_file_name);
-        } else {
-            // Immediately unlink. We don't really want to hit flash.
-            if (unlink(swap_file_name) < 0) {
-                PLOG(ERROR) << "Couldn't unlink swap file " << swap_file_name;
-            }
-        }
-    }
+    base::unique_fd swap_fd = maybe_open_dexopt_swap_file(out_oat_path);
 
-    // Avoid generating an app image for extract only since it will not contain any classes.
-    Dex2oatFileWrapper<std::function<void ()>> image_fd;
-    const std::string image_path = create_image_filename(out_oat_path);
-    if (!image_path.empty()) {
-        char app_image_format[kPropertyValueMax];
-        bool have_app_image_format =
-                get_property("dalvik.vm.appimageformat", app_image_format, NULL) > 0;
-        // Use app images only if it is enabled (by a set image format) and we are compiling
-        // profile-guided (so the app image doesn't conservatively contain all classes).
-        if (profile_guided && have_app_image_format) {
-            // Recreate is true since we do not want to modify a mapped image. If the app is
-            // already running and we modify the image file, it can cause crashes (b/27493510).
-            image_fd.reset(open_output_file(image_path.c_str(),
-                                            true /*recreate*/,
-                                            0600 /*permissions*/),
-                           [image_path]() { unlink(image_path.c_str()); }
-                           );
-            if (image_fd.get() < 0) {
-                // Could not create application image file. Go on since we can compile without
-                // it.
-                LOG(ERROR) << "installd could not create '"
-                        << image_path
-                        << "' for image file during dexopt";
-            } else if (!set_permissions_and_ownership(image_fd.get(),
-                                                      is_public,
-                                                      uid,
-                                                      image_path.c_str())) {
-                image_fd.reset(-1);
-            }
-        }
-        // If we have a valid image file path but no image fd, explicitly erase the image file.
-        if (image_fd.get() < 0) {
-            if (unlink(image_path.c_str()) < 0) {
-                if (errno != ENOENT) {
-                    PLOG(ERROR) << "Couldn't unlink image file " << image_path;
-                }
-            }
-        }
-    }
+    // Create the app image file if needed.
+    Dex2oatFileWrapper image_fd =
+            maybe_open_app_image(out_oat_path, profile_guided, is_public, uid);
 
-    ALOGV("DexInv: --- BEGIN '%s' ---\n", input_file);
+    // Open the reference profile if needed.
+    Dex2oatFileWrapper reference_profile_fd =
+            maybe_open_reference_profile(pkgname, profile_guided, is_public, uid);
+
+    ALOGV("DexInv: --- BEGIN '%s' ---\n", apk_path);
 
     pid_t pid = fork();
     if (pid == 0) {
@@ -1174,11 +1268,11 @@
         }
 
         // Pass dex2oat the relative path to the input file.
-        const char *input_file_name = get_location_from_path(input_file);
+        const char *input_file_name = get_location_from_path(apk_path);
         run_dex2oat(input_fd.get(),
                     out_oat_fd.get(),
                     in_vdex_fd.get(),
-                    out_vdex_fd,
+                    out_vdex_fd.get(),
                     image_fd.get(),
                     input_file_name,
                     out_oat_path,
@@ -1194,21 +1288,18 @@
     } else {
         int res = wait_child(pid);
         if (res == 0) {
-            ALOGV("DexInv: --- END '%s' (success) ---\n", input_file);
+            ALOGV("DexInv: --- END '%s' (success) ---\n", apk_path);
         } else {
-            ALOGE("DexInv: --- END '%s' --- status=0x%04x, process failed\n", input_file, res);
+            ALOGE("DexInv: --- END '%s' --- status=0x%04x, process failed\n", apk_path, res);
             return -1;
         }
     }
 
-    struct utimbuf ut;
-    ut.actime = input_stat.st_atime;
-    ut.modtime = input_stat.st_mtime;
-    utime(out_oat_path, &ut);
+    update_out_oat_access_times(apk_path, out_oat_path);
 
     // We've been successful, don't delete output.
     out_oat_fd.SetCleanup(false);
-    out_vdex_wrapper_fd.SetCleanup(false);
+    out_vdex_fd.SetCleanup(false);
     image_fd.SetCleanup(false);
     reference_profile_fd.SetCleanup(false);
 
diff --git a/cmds/servicemanager/service_manager.c b/cmds/servicemanager/service_manager.c
index a31e3c7..43c4c8b 100644
--- a/cmds/servicemanager/service_manager.c
+++ b/cmds/servicemanager/service_manager.c
@@ -363,6 +363,7 @@
 int main()
 {
     struct binder_state *bs;
+    union selinux_callback cb;
 
     bs = binder_open(128*1024);
     if (!bs) {
@@ -375,6 +376,11 @@
         return -1;
     }
 
+    cb.func_audit = audit_callback;
+    selinux_set_callback(SELINUX_CB_AUDIT, cb);
+    cb.func_log = selinux_log_callback;
+    selinux_set_callback(SELINUX_CB_LOG, cb);
+
     sehandle = selinux_android_service_context_handle();
     selinux_status_open(true);
 
@@ -388,11 +394,6 @@
         abort();
     }
 
-    union selinux_callback cb;
-    cb.func_audit = audit_callback;
-    selinux_set_callback(SELINUX_CB_AUDIT, cb);
-    cb.func_log = selinux_log_callback;
-    selinux_set_callback(SELINUX_CB_LOG, cb);
 
     binder_loop(bs, svcmgr_handler);
 
diff --git a/include/audiomanager/AudioManager.h b/include/audiomanager/AudioManager.h
index d561594..834dcbd 100644
--- a/include/audiomanager/AudioManager.h
+++ b/include/audiomanager/AudioManager.h
@@ -23,19 +23,19 @@
 
 #define PLAYER_PIID_INVALID -1
 
-enum {
+typedef enum {
     PLAYER_TYPE_SLES_AUDIOPLAYER_BUFFERQUEUE = 11,
     PLAYER_TYPE_SLES_AUDIOPLAYER_URI_FD = 12,
-};
+} player_type_t;
 
-enum {
+typedef enum {
     PLAYER_STATE_UNKNOWN  = -1,
     PLAYER_STATE_RELEASED = 0,
     PLAYER_STATE_IDLE     = 1,
     PLAYER_STATE_STARTED  = 2,
     PLAYER_STATE_PAUSED   = 3,
     PLAYER_STATE_STOPPED  = 4,
-};
+} player_state_t;
 
 }; // namespace android
 
diff --git a/include/audiomanager/IAudioManager.h b/include/audiomanager/IAudioManager.h
index f5ea259..909318a 100644
--- a/include/audiomanager/IAudioManager.h
+++ b/include/audiomanager/IAudioManager.h
@@ -114,10 +114,12 @@
 
     // The parcels created by these methods must be kept in sync with the
     // corresponding methods from IAudioService.aidl and objects it imports.
-    virtual audio_unique_id_t trackPlayer(int playerType, int usage, int content) = 0;
-    /*oneway*/ virtual status_t playerAttributes(audio_unique_id_t piid, int usage, int content)= 0;
-    /*oneway*/ virtual status_t playerEvent(int piid, int event) = 0;
-    /*oneway*/ virtual status_t releasePlayer(int piid) = 0;
+    virtual audio_unique_id_t trackPlayer(player_type_t playerType, audio_usage_t usage,
+                audio_content_type_t content, const sp<IBinder>& player) = 0;
+    /*oneway*/ virtual status_t playerAttributes(audio_unique_id_t piid, audio_usage_t usage,
+                audio_content_type_t content)= 0;
+    /*oneway*/ virtual status_t playerEvent(audio_unique_id_t piid, player_state_t event) = 0;
+    /*oneway*/ virtual status_t releasePlayer(audio_unique_id_t piid) = 0;
 };
 
 // ----------------------------------------------------------------------------
diff --git a/include/audiomanager/IPlayer.h b/include/audiomanager/IPlayer.h
new file mode 100644
index 0000000..efcac74
--- /dev/null
+++ b/include/audiomanager/IPlayer.h
@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_IPLAYER_H
+#define ANDROID_IPLAYER_H
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <utils/RefBase.h>
+#include <utils/Errors.h>
+#include <binder/IInterface.h>
+
+namespace android {
+
+// ----------------------------------------------------------------------------
+
+class IPlayer : public IInterface
+{
+public:
+    DECLARE_META_INTERFACE(Player);
+
+    virtual void start() = 0;
+
+    virtual void pause() = 0;
+
+    virtual void stop() = 0;
+
+    virtual void setVolume(float vol) = 0;
+
+};
+
+// ----------------------------------------------------------------------------
+
+class BnPlayer : public BnInterface<IPlayer>
+{
+public:
+    virtual status_t    onTransact( uint32_t code,
+                                    const Parcel& data,
+                                    Parcel* reply,
+                                    uint32_t flags = 0);
+};
+
+// ----------------------------------------------------------------------------
+
+}; // namespace android
+
+#endif // ANDROID_IPLAYER_H
diff --git a/include/gui/GraphicsEnv.h b/include/gui/GraphicsEnv.h
index 9f26c14..4c7366f 100644
--- a/include/gui/GraphicsEnv.h
+++ b/include/gui/GraphicsEnv.h
@@ -19,6 +19,8 @@
 
 #include <string>
 
+struct android_namespace_t;
+
 namespace android {
 
 class GraphicsEnv {
@@ -31,12 +33,27 @@
     // in the search path must have a '!' after the zip filename, e.g.
     //     /data/app/com.example.driver/base.apk!/lib/arm64-v8a
     void setDriverPath(const std::string path);
+    android_namespace_t* getDriverNamespace();
 
 private:
     GraphicsEnv() = default;
     std::string mDriverPath;
+    android_namespace_t* mDriverNamespace = nullptr;
 };
 
 } // namespace android
 
+/* FIXME
+ * Export an un-mangled function that just does
+ *     return android::GraphicsEnv::getInstance().getDriverNamespace();
+ * This allows libEGL to get the function pointer via dlsym, since it can't
+ * directly link against libgui. In a future release, we'll fix this so that
+ * libgui does not depend on graphics API libraries, and libEGL can link
+ * against it. The current dependencies from libgui -> libEGL are:
+ *  - the GLConsumer class, which should be moved to its own library
+ *  - the EGLsyncKHR synchronization in BufferQueue, which is deprecated and
+ *    will be removed soon.
+ */
+extern "C" android_namespace_t* android_getDriverNamespace();
+
 #endif // ANDROID_GUI_GRAPHICS_ENV_H
diff --git a/libs/gui/Android.bp b/libs/gui/Android.bp
index 6d4e9ae..3815bdc 100644
--- a/libs/gui/Android.bp
+++ b/libs/gui/Android.bp
@@ -100,6 +100,7 @@
     ],
 
     shared_libs: [
+        "libnativeloader",
         "libsync",
         "libbinder",
         "libcutils",
diff --git a/libs/gui/GraphicsEnv.cpp b/libs/gui/GraphicsEnv.cpp
index 99b74bf..68f0f98 100644
--- a/libs/gui/GraphicsEnv.cpp
+++ b/libs/gui/GraphicsEnv.cpp
@@ -18,7 +18,10 @@
 #define LOG_TAG "GraphicsEnv"
 #include <gui/GraphicsEnv.h>
 
+#include <mutex>
+
 #include <log/log.h>
+#include <nativeloader/dlext_namespaces.h>
 
 namespace android {
 
@@ -37,4 +40,42 @@
     mDriverPath = path;
 }
 
+android_namespace_t* GraphicsEnv::getDriverNamespace() {
+    static std::once_flag once;
+    std::call_once(once, [this]() {
+        // TODO; In the next version of Android, all graphics drivers will be
+        // loaded into a custom namespace. To minimize risk for this release,
+        // only updated drivers use a custom namespace.
+        //
+        // Additionally, the custom namespace will be
+        // ANDROID_NAMESPACE_TYPE_ISOLATED, and will only have access to a
+        // subset of the system.
+        if (mDriverPath.empty())
+            return;
+
+        char defaultPath[PATH_MAX];
+        android_get_LD_LIBRARY_PATH(defaultPath, sizeof(defaultPath));
+        size_t defaultPathLen = strlen(defaultPath);
+
+        std::string path;
+        path.reserve(mDriverPath.size() + 1 + defaultPathLen);
+        path.append(mDriverPath);
+        path.push_back(':');
+        path.append(defaultPath, defaultPathLen);
+
+        mDriverNamespace = android_create_namespace(
+                "gfx driver",
+                nullptr,                    // ld_library_path
+                path.c_str(),               // default_library_path
+                ANDROID_NAMESPACE_TYPE_SHARED,
+                nullptr,                    // permitted_when_isolated_path
+                nullptr);                   // parent
+    });
+    return mDriverNamespace;
+}
+
 } // namespace android
+
+extern "C" android_namespace_t* android_getDriverNamespace() {
+    return android::GraphicsEnv::getInstance().getDriverNamespace();
+}
diff --git a/libs/gui/Sensor.cpp b/libs/gui/Sensor.cpp
index a69de5e..9cb2035 100644
--- a/libs/gui/Sensor.cpp
+++ b/libs/gui/Sensor.cpp
@@ -219,7 +219,10 @@
         break;
     case SENSOR_TYPE_DYNAMIC_SENSOR_META:
         mStringType = SENSOR_STRING_TYPE_DYNAMIC_SENSOR_META;
-        mFlags = SENSOR_FLAG_SPECIAL_REPORTING_MODE; // special trigger and non-wake up
+        mFlags |= SENSOR_FLAG_SPECIAL_REPORTING_MODE; // special trigger
+        if (halVersion < SENSORS_DEVICE_API_VERSION_1_3) {
+            mFlags |= SENSOR_FLAG_WAKE_UP;
+        }
         break;
     case SENSOR_TYPE_POSE_6DOF:
         mStringType = SENSOR_STRING_TYPE_POSE_6DOF;
diff --git a/opengl/libagl/egl.cpp b/opengl/libagl/egl.cpp
index 493c0b8..48bf676 100644
--- a/opengl/libagl/egl.cpp
+++ b/opengl/libagl/egl.cpp
@@ -740,6 +740,7 @@
         case GGL_PIXEL_FORMAT_RGB_565:      size *= 2; break;
         case GGL_PIXEL_FORMAT_RGBA_8888:    size *= 4; break;
         case GGL_PIXEL_FORMAT_RGBX_8888:    size *= 4; break;
+        case GGL_PIXEL_FORMAT_BGRA_8888:    size *= 4; break;
         default:
             ALOGE("incompatible pixel format for pbuffer (format=%d)", f);
             pbuffer.data = 0;
@@ -1027,6 +1028,19 @@
         { EGL_SURFACE_TYPE,     EGL_WINDOW_BIT|EGL_PBUFFER_BIT|EGL_PIXMAP_BIT },
 };
 
+// BGRA 8888 config
+static config_pair_t const config_8_attribute_list[] = {
+        { EGL_BUFFER_SIZE,     32 },
+        { EGL_ALPHA_SIZE,       8 },
+        { EGL_BLUE_SIZE,        8 },
+        { EGL_GREEN_SIZE,       8 },
+        { EGL_RED_SIZE,         8 },
+        { EGL_DEPTH_SIZE,       0 },
+        { EGL_CONFIG_ID,        8 },
+        { EGL_NATIVE_VISUAL_ID, GGL_PIXEL_FORMAT_BGRA_8888 },
+        { EGL_SURFACE_TYPE,     EGL_WINDOW_BIT|EGL_PBUFFER_BIT|EGL_PIXMAP_BIT },
+};
+
 static configs_t const gConfigs[] = {
         { config_0_attribute_list, NELEM(config_0_attribute_list) },
         { config_1_attribute_list, NELEM(config_1_attribute_list) },
@@ -1036,6 +1050,7 @@
         { config_5_attribute_list, NELEM(config_5_attribute_list) },
         { config_6_attribute_list, NELEM(config_6_attribute_list) },
         { config_7_attribute_list, NELEM(config_7_attribute_list) },
+        { config_8_attribute_list, NELEM(config_8_attribute_list) },
 };
 
 static config_management_t const gConfigManagement[] = {
@@ -1118,6 +1133,10 @@
         pixelFormat = GGL_PIXEL_FORMAT_A_8;
         depthFormat = GGL_PIXEL_FORMAT_Z_16;
         break;
+    case 8:
+        pixelFormat = GGL_PIXEL_FORMAT_BGRA_8888;
+        depthFormat = 0;
+        break;
     default:
         return NAME_NOT_FOUND;
     }
diff --git a/opengl/libs/EGL/Loader.cpp b/opengl/libs/EGL/Loader.cpp
index ac455cd..27697ab 100644
--- a/opengl/libs/EGL/Loader.cpp
+++ b/opengl/libs/EGL/Loader.cpp
@@ -14,6 +14,9 @@
  ** limitations under the License.
  */
 
+//#define LOG_NDEBUG 0
+
+#include <array>
 #include <ctype.h>
 #include <dirent.h>
 #include <dlfcn.h>
@@ -23,6 +26,7 @@
 #include <stdlib.h>
 #include <string.h>
 
+#include <android/dlext.h>
 #include <cutils/properties.h>
 #include <log/log.h>
 
@@ -136,10 +140,26 @@
 // ----------------------------------------------------------------------------
 
 Loader::Loader()
-    : getProcAddress(NULL) {
+    : getProcAddress(NULL),
+      mLibGui(nullptr),
+      mGetDriverNamespace(nullptr)
+{
+    // FIXME: See note in GraphicsEnv.h about android_getDriverNamespace().
+    // libgui should already be loaded in any process that uses libEGL, but
+    // if for some reason it isn't, then we're not going to get a driver
+    // namespace anyway, so don't force it to be loaded.
+    mLibGui = dlopen("libgui.so", RTLD_NOLOAD | RTLD_LOCAL | RTLD_LAZY);
+    if (!mLibGui) {
+        ALOGD("failed to load libgui: %s", dlerror());
+        return;
+    }
+    mGetDriverNamespace = reinterpret_cast<decltype(mGetDriverNamespace)>(
+            dlsym(mLibGui, "android_getDriverNamespace"));
 }
 
 Loader::~Loader() {
+    if (mLibGui)
+        dlclose(mLibGui);
 }
 
 static void* load_wrapper(const char* path) {
@@ -286,9 +306,7 @@
     }
 }
 
-void *Loader::load_driver(const char* kind,
-        egl_connection_t* cnx, uint32_t mask)
-{
+static void* load_system_driver(const char* kind) {
     class MatchFile {
     public:
         static String8 find(const char* kind) {
@@ -413,11 +431,55 @@
 
     ALOGD("loaded %s", driver_absolute_path);
 
+    return dso;
+}
+
+static const std::array<const char*, 2> HAL_SUBNAME_KEY_PROPERTIES = {{
+    "ro.hardware.egl",
+    "ro.board.platform",
+}};
+
+static void* load_updated_driver(const char* kind, android_namespace_t* ns) {
+    const android_dlextinfo dlextinfo = {
+        .flags = ANDROID_DLEXT_USE_NAMESPACE,
+        .library_namespace = ns,
+    };
+    void* so = nullptr;
+    char prop[PROPERTY_VALUE_MAX + 1];
+    for (auto key : HAL_SUBNAME_KEY_PROPERTIES) {
+        if (property_get(key, prop, nullptr) > 0) {
+            String8 name;
+            name.appendFormat("lib%s_%s.so", kind, prop);
+            so = android_dlopen_ext(name.string(), RTLD_LOCAL | RTLD_NOW,
+                    &dlextinfo);
+            if (so)
+                return so;
+        }
+    }
+    return nullptr;
+}
+
+void *Loader::load_driver(const char* kind,
+        egl_connection_t* cnx, uint32_t mask)
+{
+    void* dso = nullptr;
+    if (mGetDriverNamespace) {
+        android_namespace_t* ns = mGetDriverNamespace();
+        if (ns) {
+            dso = load_updated_driver(kind, ns);
+        }
+    }
+    if (!dso) {
+        dso = load_system_driver(kind);
+        if (!dso)
+            return NULL;
+    }
+
     if (mask & EGL) {
         getProcAddress = (getProcAddressType)dlsym(dso, "eglGetProcAddress");
 
         ALOGE_IF(!getProcAddress,
-                "can't find eglGetProcAddress() in %s", driver_absolute_path);
+                "can't find eglGetProcAddress() in EGL driver library");
 
         egl_t* egl = &cnx->egl;
         __eglMustCastToProperFunctionPointerType* curr =
diff --git a/opengl/libs/EGL/Loader.h b/opengl/libs/EGL/Loader.h
index 94f680e..d0435e7 100644
--- a/opengl/libs/EGL/Loader.h
+++ b/opengl/libs/EGL/Loader.h
@@ -25,6 +25,8 @@
 #include <utils/Singleton.h>
 #include <utils/String8.h>
 
+#include <gui/GraphicsEnv.h>
+
 #include <EGL/egl.h>
 
 // ----------------------------------------------------------------------------
@@ -53,7 +55,10 @@
     };
     
     getProcAddressType getProcAddress;
-    
+
+    void* mLibGui;
+    decltype(android_getDriverNamespace)* mGetDriverNamespace;
+
 public:
     ~Loader();
     
diff --git a/services/audiomanager/Android.bp b/services/audiomanager/Android.bp
index 04dd967..22b084a 100644
--- a/services/audiomanager/Android.bp
+++ b/services/audiomanager/Android.bp
@@ -1,7 +1,10 @@
 cc_library_shared {
     name: "libaudiomanager",
 
-    srcs: ["IAudioManager.cpp"],
+    srcs: [
+        "IAudioManager.cpp",
+        "IPlayer.cpp",
+    ],
 
     shared_libs: [
         "libutils",
diff --git a/services/audiomanager/IAudioManager.cpp b/services/audiomanager/IAudioManager.cpp
index a41804f..b9b0706 100644
--- a/services/audiomanager/IAudioManager.cpp
+++ b/services/audiomanager/IAudioManager.cpp
@@ -35,15 +35,16 @@
     {
     }
 
-    virtual audio_unique_id_t trackPlayer(int playerType, int usage, int content) {
+    virtual audio_unique_id_t trackPlayer(player_type_t playerType, audio_usage_t usage,
+            audio_content_type_t content, const sp<IBinder>& player) {
         Parcel data, reply;
         data.writeInterfaceToken(IAudioManager::getInterfaceDescriptor());
         data.writeInt32(1); // non-null PlayerIdCard parcelable
         // marshall PlayerIdCard data
         data.writeInt32((int32_t) playerType);
         //   write attributes of PlayerIdCard
-        data.writeInt32(usage);
-        data.writeInt32(content);
+        data.writeInt32((int32_t) usage);
+        data.writeInt32((int32_t) content);
         data.writeInt32(0 /*source: none here, this is a player*/);
         data.writeInt32(0 /*flags*/);
         //   write attributes' tags
@@ -51,6 +52,8 @@
         data.writeString16(String16("")); // no tags
         //   write attributes' bundle
         data.writeInt32(-1977 /*ATTR_PARCEL_IS_NULL_BUNDLE*/); // no bundle
+        //   write IPlayer
+        data.writeStrongBinder(player);
         // get new PIId in reply
         const status_t res = remote()->transact(TRACK_PLAYER, data, &reply, 0);
         if (res != OK || reply.readExceptionCode() != 0) {
@@ -63,13 +66,14 @@
         }
     }
 
-    virtual status_t playerAttributes(audio_unique_id_t piid, int usage, int content) {
+    virtual status_t playerAttributes(audio_unique_id_t piid, audio_usage_t usage,
+            audio_content_type_t content) {
         Parcel data, reply;
         data.writeInterfaceToken(IAudioManager::getInterfaceDescriptor());
-        data.writeInt32(piid);
+        data.writeInt32((int32_t) piid);
         data.writeInt32(1); // non-null AudioAttributes parcelable
-        data.writeInt32(usage);
-        data.writeInt32(content);
+        data.writeInt32((int32_t) usage);
+        data.writeInt32((int32_t) content);
         data.writeInt32(0 /*source: none here, this is a player*/);
         data.writeInt32(0 /*flags*/);
         //   write attributes' tags
@@ -80,18 +84,18 @@
         return remote()->transact(PLAYER_ATTRIBUTES, data, &reply, IBinder::FLAG_ONEWAY);
     }
 
-    virtual status_t playerEvent(int piid, int event) {
+    virtual status_t playerEvent(audio_unique_id_t piid, player_state_t event) {
         Parcel data, reply;
         data.writeInterfaceToken(IAudioManager::getInterfaceDescriptor());
-        data.writeInt32(piid);
-        data.writeInt32(event);
+        data.writeInt32((int32_t) piid);
+        data.writeInt32((int32_t) event);
         return remote()->transact(PLAYER_EVENT, data, &reply, IBinder::FLAG_ONEWAY);
     }
 
-    virtual status_t releasePlayer(int piid) {
+    virtual status_t releasePlayer(audio_unique_id_t piid) {
         Parcel data, reply;
         data.writeInterfaceToken(IAudioManager::getInterfaceDescriptor());
-        data.writeInt32(piid);
+        data.writeInt32((int32_t) piid);
         return remote()->transact(RELEASE_PLAYER, data, &reply, IBinder::FLAG_ONEWAY);
     }
 };
diff --git a/services/audiomanager/IPlayer.cpp b/services/audiomanager/IPlayer.cpp
new file mode 100644
index 0000000..3b0b4e9
--- /dev/null
+++ b/services/audiomanager/IPlayer.cpp
@@ -0,0 +1,109 @@
+/*
+**
+** Copyright 2017, The Android Open Source Project
+**
+** Licensed under the Apache License, Version 2.0 (the "License");
+** you may not use this file except in compliance with the License.
+** You may obtain a copy of the License at
+**
+**     http://www.apache.org/licenses/LICENSE-2.0
+**
+** Unless required by applicable law or agreed to in writing, software
+** distributed under the License is distributed on an "AS IS" BASIS,
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+** See the License for the specific language governing permissions and
+** limitations under the License.
+*/
+
+#define LOG_TAG "IPlayer"
+//#define LOG_NDEBUG 0
+#include <utils/Log.h>
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <binder/Parcel.h>
+
+#include <audiomanager/IPlayer.h>
+
+namespace android {
+
+enum {
+    START      = IBinder::FIRST_CALL_TRANSACTION,
+    PAUSE      = IBinder::FIRST_CALL_TRANSACTION + 1,
+    STOP       = IBinder::FIRST_CALL_TRANSACTION + 2,
+    SET_VOLUME = IBinder::FIRST_CALL_TRANSACTION + 3,
+};
+
+class BpPlayer : public BpInterface<IPlayer>
+{
+public:
+    explicit BpPlayer(const sp<IBinder>& impl)
+        : BpInterface<IPlayer>(impl)
+    {
+    }
+
+    virtual void start()
+    {
+        Parcel data, reply;
+        data.writeInterfaceToken(IPlayer::getInterfaceDescriptor());
+        remote()->transact(START, data, &reply);
+    }
+
+    virtual void pause()
+    {
+        Parcel data, reply;
+        data.writeInterfaceToken(IPlayer::getInterfaceDescriptor());
+        remote()->transact(PAUSE, data, &reply);
+    }
+
+    virtual void stop()
+    {
+        Parcel data, reply;
+        data.writeInterfaceToken(IPlayer::getInterfaceDescriptor());
+        remote()->transact(STOP, data, &reply);
+    }
+
+    virtual void setVolume(float vol)
+    {
+        Parcel data, reply;
+        data.writeInterfaceToken(IPlayer::getInterfaceDescriptor());
+        data.writeFloat(vol);
+        remote()->transact(SET_VOLUME, data, &reply);
+    }
+};
+
+IMPLEMENT_META_INTERFACE(Player, "android.media.IPlayer");
+
+// ----------------------------------------------------------------------
+
+status_t BnPlayer::onTransact(
+    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
+{
+    switch (code) {
+        case START: {
+            CHECK_INTERFACE(IPlayer, data, reply);
+            start();
+            return NO_ERROR;
+        } break;
+        case PAUSE: {
+            CHECK_INTERFACE(IPlayer, data, reply);
+            pause();
+            return NO_ERROR;
+        }
+        case STOP: {
+            CHECK_INTERFACE(IPlayer, data, reply);
+            stop();
+            return NO_ERROR;
+        } break;
+        case SET_VOLUME: {
+            CHECK_INTERFACE(IPlayer, data, reply);
+            setVolume(data.readFloat());
+            return NO_ERROR;
+        }
+        default:
+            return BBinder::onTransact(code, data, reply, flags);
+    }
+}
+
+} // namespace android
diff --git a/services/inputflinger/InputDispatcher.cpp b/services/inputflinger/InputDispatcher.cpp
index 89475e9..8771d45 100644
--- a/services/inputflinger/InputDispatcher.cpp
+++ b/services/inputflinger/InputDispatcher.cpp
@@ -1224,15 +1224,8 @@
 
                 if (maskedAction == AMOTION_EVENT_ACTION_DOWN
                         && (flags & InputWindowInfo::FLAG_WATCH_OUTSIDE_TOUCH)) {
-                    int32_t outsideTargetFlags = InputTarget::FLAG_DISPATCH_AS_OUTSIDE;
-                    if (isWindowObscuredAtPointLocked(windowHandle, x, y)) {
-                        outsideTargetFlags |= InputTarget::FLAG_WINDOW_IS_OBSCURED;
-                    } else if (isWindowObscuredLocked(windowHandle)) {
-                        outsideTargetFlags |= InputTarget::FLAG_WINDOW_IS_PARTIALLY_OBSCURED;
-                    }
-
                     mTempTouchState.addOrUpdateWindow(
-                            windowHandle, outsideTargetFlags, BitSet32(0));
+                            windowHandle, InputTarget::FLAG_DISPATCH_AS_OUTSIDE, BitSet32(0));
                 }
             }
         }
diff --git a/vulkan/api/vulkan.api b/vulkan/api/vulkan.api
index df45c20..1023182 100644
--- a/vulkan/api/vulkan.api
+++ b/vulkan/api/vulkan.api
@@ -150,6 +150,9 @@
 @extension("VK_NVX_device_generated_commands") define VK_NVX_DEVICE_GENERATED_COMMANDS_SPEC_VERSION 1
 @extension("VK_NVX_device_generated_commands") define VK_NVX_DEVICE_GENERATED_COMMANDS_EXTENSION_NAME "VK_NVX_device_generated_commands"
 
+@extension("VK_KHR_swapchain_front_buffered") define VK_KHR_SWAPCHAIN_FRONT_BUFFERED_SPEC_VERSION 2
+@extension("VK_KHR_swapchain_front_buffered") define VK_KHR_SWAPCHAIN_FRONT_BUFFERED_EXTENSION_NAME "VK_KHR_swapchain_front_buffered"
+
 
 
 /////////////
@@ -924,6 +927,10 @@
     VK_PRESENT_MODE_MAILBOX_KHR                             = 0x00000001,
     VK_PRESENT_MODE_FIFO_KHR                                = 0x00000002,
     VK_PRESENT_MODE_FIFO_RELAXED_KHR                        = 0x00000003,
+    //@extension("VK_KHR_swapchain_front_buffered")
+    VK_PRESENT_MODE_FRONT_BUFFERED_DEMAND_REFRESH_KHR       = 1000111000,
+    //@extension("VK_KHR_swapchain_front_buffered")
+    VK_PRESENT_MODE_FRONT_BUFFERED_CONTINUOUS_REFRESH_KHR   = 1000111001,
 }
 
 @extension("VK_KHR_surface")
@@ -6109,6 +6116,13 @@
         VkDeviceGeneratedCommandsLimitsNVX*         pLimits) {
 }
 
+@extension("VK_KHR_swapchain_front_buffered")
+cmd VkResult vkGetSwapchainStatusKHR(
+        VkDevice                                    device,
+        VkSwapchainKHR                              swapchain) {
+    return ?
+}
+
 
 ////////////////
 // Validation //
diff --git a/vulkan/include/vulkan/vulkan.h b/vulkan/include/vulkan/vulkan.h
index 6ddce8f..28c2440 100644
--- a/vulkan/include/vulkan/vulkan.h
+++ b/vulkan/include/vulkan/vulkan.h
@@ -3228,6 +3228,8 @@
     VK_PRESENT_MODE_MAILBOX_KHR = 1,
     VK_PRESENT_MODE_FIFO_KHR = 2,
     VK_PRESENT_MODE_FIFO_RELAXED_KHR = 3,
+    VK_PRESENT_MODE_FRONT_BUFFERED_DEMAND_REFRESH_KHR = 1000111000,
+    VK_PRESENT_MODE_FRONT_BUFFERED_CONTINUOUS_REFRESH_KHR = 1000111001,
     VK_PRESENT_MODE_BEGIN_RANGE_KHR = VK_PRESENT_MODE_IMMEDIATE_KHR,
     VK_PRESENT_MODE_END_RANGE_KHR = VK_PRESENT_MODE_FIFO_RELAXED_KHR,
     VK_PRESENT_MODE_RANGE_SIZE_KHR = (VK_PRESENT_MODE_FIFO_RELAXED_KHR - VK_PRESENT_MODE_IMMEDIATE_KHR + 1),
@@ -3884,6 +3886,18 @@
     const VkPresentRegionKHR* pRegions;
 } VkPresentRegionsKHR;
 
+#define VK_KHR_swapchain_front_buffered 1
+#define VK_KHR_SWAPCHAIN_FRONT_BUFFERED_SPEC_VERSION 2
+#define VK_KHR_SWAPCHAIN_FRONT_BUFFERED_EXTENSION_NAME "VK_KHR_swapchain_front_buffered"
+
+typedef VkResult (VKAPI_PTR *PFN_vkGetSwapchainStatusKHR)(VkDevice device, VkSwapchainKHR swapchain);
+
+#ifndef VK_NO_PROTOTYPES
+VKAPI_ATTR VkResult VKAPI_CALL vkGetSwapchainStatusKHR(
+    VkDevice                                    device,
+    VkSwapchainKHR                              swapchain);
+#endif
+
 #define VK_EXT_debug_report 1
 VK_DEFINE_NON_DISPATCHABLE_HANDLE(VkDebugReportCallbackEXT)
 
diff --git a/vulkan/libvulkan/Android.bp b/vulkan/libvulkan/Android.bp
index ba883f7..746ab4e 100644
--- a/vulkan/libvulkan/Android.bp
+++ b/vulkan/libvulkan/Android.bp
@@ -69,6 +69,7 @@
         "vulkan_headers",
     ],
     shared_libs: [
+        "libgui",
         "libziparchive",
         "libhardware",
         "libsync",
diff --git a/vulkan/libvulkan/code-generator.tmpl b/vulkan/libvulkan/code-generator.tmpl
index 33c5719..9021972 100644
--- a/vulkan/libvulkan/code-generator.tmpl
+++ b/vulkan/libvulkan/code-generator.tmpl
@@ -705,6 +705,7 @@
 VK_KHR_surface
 VK_KHR_swapchain
 VK_GOOGLE_display_timing
+VK_KHR_swapchain_front_buffered
 {{end}}
 
 
diff --git a/vulkan/libvulkan/driver.cpp b/vulkan/libvulkan/driver.cpp
index 6c9a449..46b29ca 100644
--- a/vulkan/libvulkan/driver.cpp
+++ b/vulkan/libvulkan/driver.cpp
@@ -21,10 +21,15 @@
 
 #include <algorithm>
 #include <array>
+#include <dlfcn.h>
 #include <new>
 
 #include <log/log.h>
 
+#include <android/dlext.h>
+#include <cutils/properties.h>
+#include <gui/GraphicsEnv.h>
+
 #include "driver.h"
 #include "stubhal.h"
 
@@ -126,17 +131,74 @@
 
 Hal Hal::hal_;
 
+void* LoadLibrary(const android_dlextinfo& dlextinfo,
+                  const char* subname,
+                  int subname_len) {
+    const char kLibFormat[] = "vulkan.%*s.so";
+    char* name = static_cast<char*>(
+        alloca(sizeof(kLibFormat) + static_cast<size_t>(subname_len)));
+    sprintf(name, kLibFormat, subname_len, subname);
+    return android_dlopen_ext(name, RTLD_LOCAL | RTLD_NOW, &dlextinfo);
+}
+
+const std::array<const char*, 2> HAL_SUBNAME_KEY_PROPERTIES = {{
+    "ro.hardware." HWVULKAN_HARDWARE_MODULE_ID,
+    "ro.board.platform",
+}};
+
+int LoadUpdatedDriver(const hw_module_t** module) {
+    const android_dlextinfo dlextinfo = {
+        .flags = ANDROID_DLEXT_USE_NAMESPACE,
+        .library_namespace = android::GraphicsEnv::getInstance().getDriverNamespace(),
+    };
+    if (!dlextinfo.library_namespace)
+        return -ENOENT;
+
+    void* so = nullptr;
+    char prop[PROPERTY_VALUE_MAX];
+    for (auto key : HAL_SUBNAME_KEY_PROPERTIES) {
+        int prop_len = property_get(key, prop, nullptr);
+        if (prop_len > 0) {
+            so = LoadLibrary(dlextinfo, prop, prop_len);
+            if (so)
+                break;
+        }
+    }
+    if (!so)
+        return -ENOENT;
+
+    hw_module_t* hmi = static_cast<hw_module_t*>(dlsym(so, HAL_MODULE_INFO_SYM_AS_STR));
+    if (!hmi) {
+        ALOGE("couldn't find symbol '%s' in HAL library: %s", HAL_MODULE_INFO_SYM_AS_STR, dlerror());
+        dlclose(so);
+        return -EINVAL;
+    }
+    if (strcmp(hmi->id, HWVULKAN_HARDWARE_MODULE_ID) != 0) {
+        ALOGE("HAL id '%s' != '%s'", hmi->id, HWVULKAN_HARDWARE_MODULE_ID);
+        dlclose(so);
+        return -EINVAL;
+    }
+    hmi->dso = so;
+    *module = hmi;
+    ALOGD("loaded updated driver");
+    return 0;
+}
+
 bool Hal::Open() {
     ALOG_ASSERT(!hal_.dev_, "OpenHAL called more than once");
 
     // Use a stub device unless we successfully open a real HAL device.
     hal_.dev_ = &stubhal::kDevice;
 
-    const hwvulkan_module_t* module;
-    int result =
-        hw_get_module("vulkan", reinterpret_cast<const hw_module_t**>(&module));
+    int result;
+    const hwvulkan_module_t* module = nullptr;
+
+    result = LoadUpdatedDriver(reinterpret_cast<const hw_module_t**>(&module));
+    if (result == -ENOENT) {
+        result = hw_get_module(HWVULKAN_HARDWARE_MODULE_ID, reinterpret_cast<const hw_module_t**>(&module));
+    }
     if (result != 0) {
-        ALOGI("no Vulkan HAL present, using stub HAL");
+        ALOGV("unable to load Vulkan HAL, using stub HAL (result=%d)", result);
         return true;
     }
 
diff --git a/vulkan/libvulkan/driver_gen.cpp b/vulkan/libvulkan/driver_gen.cpp
index cfa9e30..4cc2eb5 100644
--- a/vulkan/libvulkan/driver_gen.cpp
+++ b/vulkan/libvulkan/driver_gen.cpp
@@ -93,6 +93,15 @@
     }
 }
 
+VKAPI_ATTR VkResult checkedGetSwapchainStatusKHR(VkDevice device, VkSwapchainKHR swapchain) {
+    if (GetData(device).hook_extensions[ProcHook::KHR_swapchain_front_buffered]) {
+        return GetSwapchainStatusKHR(device, swapchain);
+    } else {
+        Logger(device).Err(device, "VK_KHR_swapchain_front_buffered not enabled. vkGetSwapchainStatusKHR not executed.");
+        return VK_SUCCESS;
+    }
+}
+
 // clang-format on
 
 const ProcHook g_proc_hooks[] = {
@@ -301,6 +310,13 @@
         reinterpret_cast<PFN_vkVoidFunction>(checkedGetSwapchainImagesKHR),
     },
     {
+        "vkGetSwapchainStatusKHR",
+        ProcHook::DEVICE,
+        ProcHook::KHR_swapchain_front_buffered,
+        reinterpret_cast<PFN_vkVoidFunction>(GetSwapchainStatusKHR),
+        reinterpret_cast<PFN_vkVoidFunction>(checkedGetSwapchainStatusKHR),
+    },
+    {
         "vkQueuePresentKHR",
         ProcHook::DEVICE,
         ProcHook::KHR_swapchain,
@@ -338,6 +354,7 @@
     if (strcmp(name, "VK_KHR_surface") == 0) return ProcHook::KHR_surface;
     if (strcmp(name, "VK_KHR_swapchain") == 0) return ProcHook::KHR_swapchain;
     if (strcmp(name, "VK_GOOGLE_display_timing") == 0) return ProcHook::GOOGLE_display_timing;
+    if (strcmp(name, "VK_KHR_swapchain_front_buffered") == 0) return ProcHook::KHR_swapchain_front_buffered;
     // clang-format on
     return ProcHook::EXTENSION_UNKNOWN;
 }
diff --git a/vulkan/libvulkan/driver_gen.h b/vulkan/libvulkan/driver_gen.h
index fa81958..a137ab6 100644
--- a/vulkan/libvulkan/driver_gen.h
+++ b/vulkan/libvulkan/driver_gen.h
@@ -40,6 +40,7 @@
         KHR_surface,
         KHR_swapchain,
         GOOGLE_display_timing,
+        KHR_swapchain_front_buffered,
 
         EXTENSION_CORE,  // valid bit
         EXTENSION_COUNT,
diff --git a/vulkan/libvulkan/swapchain.cpp b/vulkan/libvulkan/swapchain.cpp
index bad5645..984016e 100644
--- a/vulkan/libvulkan/swapchain.cpp
+++ b/vulkan/libvulkan/swapchain.cpp
@@ -555,6 +555,9 @@
                                                  VkPresentModeKHR* modes) {
     const VkPresentModeKHR kModes[] = {
         VK_PRESENT_MODE_MAILBOX_KHR, VK_PRESENT_MODE_FIFO_KHR,
+        // TODO(chrisforbes): should only expose this if the driver can.
+        VK_PRESENT_MODE_FRONT_BUFFERED_DEMAND_REFRESH_KHR,
+        VK_PRESENT_MODE_FRONT_BUFFERED_CONTINUOUS_REFRESH_KHR,
     };
     const uint32_t kNumModes = sizeof(kModes) / sizeof(kModes[0]);
 
@@ -602,7 +605,9 @@
              "swapchain preTransform=%#x not supported",
              create_info->preTransform);
     ALOGV_IF(!(create_info->presentMode == VK_PRESENT_MODE_FIFO_KHR ||
-               create_info->presentMode == VK_PRESENT_MODE_MAILBOX_KHR),
+               create_info->presentMode == VK_PRESENT_MODE_MAILBOX_KHR ||
+               create_info->presentMode == VK_PRESENT_MODE_FRONT_BUFFERED_DEMAND_REFRESH_KHR ||
+               create_info->presentMode == VK_PRESENT_MODE_FRONT_BUFFERED_CONTINUOUS_REFRESH_KHR),
              "swapchain presentMode=%u not supported",
              create_info->presentMode);
 
@@ -656,6 +661,20 @@
         return VK_ERROR_INITIALIZATION_FAILED;
     }
 
+    err = native_window_set_shared_buffer_mode(surface.window.get(), false);
+    if (err != 0) {
+        ALOGE("native_window_set_shared_buffer_mode(false) failed: %s (%d)",
+              strerror(-err), err);
+        return VK_ERROR_INITIALIZATION_FAILED;
+    }
+
+    err = native_window_set_auto_refresh(surface.window.get(), false);
+    if (err != 0) {
+        ALOGE("native_window_set_auto_refresh(false) failed: %s (%d)",
+              strerror(-err), err);
+        return VK_ERROR_INITIALIZATION_FAILED;
+    }
+
     // -- Configure the native window --
 
     const auto& dispatch = GetData(device).driver;
@@ -764,6 +783,25 @@
     }
 
     VkSwapchainImageUsageFlagsANDROID swapchain_image_usage = 0;
+    if (create_info->presentMode == VK_PRESENT_MODE_FRONT_BUFFERED_DEMAND_REFRESH_KHR ||
+        create_info->presentMode == VK_PRESENT_MODE_FRONT_BUFFERED_CONTINUOUS_REFRESH_KHR) {
+        swapchain_image_usage |= VK_SWAPCHAIN_IMAGE_USAGE_FRONT_BUFFER_BIT_ANDROID;
+
+        err = native_window_set_shared_buffer_mode(surface.window.get(), true);
+        if (err != 0) {
+            ALOGE("native_window_set_shared_buffer_mode failed: %s (%d)", strerror(-err), err);
+            return VK_ERROR_INITIALIZATION_FAILED;
+        }
+    }
+
+    if (create_info->presentMode == VK_PRESENT_MODE_FRONT_BUFFERED_CONTINUOUS_REFRESH_KHR) {
+        err = native_window_set_auto_refresh(surface.window.get(), true);
+        if (err != 0) {
+            ALOGE("native_window_set_auto_refresh failed: %s (%d)", strerror(-err), err);
+            return VK_ERROR_INITIALIZATION_FAILED;
+        }
+    }
+
     int gralloc_usage = 0;
     if (dispatch.GetSwapchainGrallocUsage2ANDROID) {
         result = dispatch.GetSwapchainGrallocUsage2ANDROID(
@@ -1270,5 +1308,16 @@
     return result;
 }
 
+VKAPI_ATTR
+VkResult GetSwapchainStatusKHR(
+    VkDevice,
+    VkSwapchainKHR) {
+    VkResult result = VK_SUCCESS;
+
+    // TODO(chrisforbes): Implement this function properly
+
+    return result;
+}
+
 }  // namespace driver
 }  // namespace vulkan
diff --git a/vulkan/libvulkan/swapchain.h b/vulkan/libvulkan/swapchain.h
index 8aac427..91d7219 100644
--- a/vulkan/libvulkan/swapchain.h
+++ b/vulkan/libvulkan/swapchain.h
@@ -36,6 +36,7 @@
 VKAPI_ATTR VkResult QueuePresentKHR(VkQueue queue, const VkPresentInfoKHR* present_info);
 VKAPI_ATTR VkResult GetRefreshCycleDurationGOOGLE(VkDevice device, VkSwapchainKHR swapchain, VkRefreshCycleDurationGOOGLE* pDisplayTimingProperties);
 VKAPI_ATTR VkResult GetPastPresentationTimingGOOGLE(VkDevice device, VkSwapchainKHR swapchain, uint32_t* pPresentationTimingCount, VkPastPresentationTimingGOOGLE* pPresentationTimings);
+VKAPI_ATTR VkResult GetSwapchainStatusKHR(VkDevice device, VkSwapchainKHR swapchain);
 // clang-format on
 
 }  // namespace driver