[automerger skipped] DO NOT MERGE - Skip pi-platform-release (PPRL.190505.001) in stage-aosp-master
am: 26ba26bf71 -s ours
am skip reason: subject contains skip directive

Change-Id: Ia7ec0913ab3369794a415cb2538afbef90f91b30
diff --git a/adb/adb.cpp b/adb/adb.cpp
index 24d4292..d5e7be1 100644
--- a/adb/adb.cpp
+++ b/adb/adb.cpp
@@ -337,9 +337,12 @@
             case ADB_AUTH_SIGNATURE: {
                 // TODO: Switch to string_view.
                 std::string signature(p->payload.begin(), p->payload.end());
-                if (adbd_auth_verify(t->token, sizeof(t->token), signature)) {
+                std::string auth_key;
+                if (adbd_auth_verify(t->token, sizeof(t->token), signature, &auth_key)) {
                     adbd_auth_verified(t);
                     t->failed_auth_attempts = 0;
+                    t->auth_key = auth_key;
+                    adbd_notify_framework_connected_key(t);
                 } else {
                     if (t->failed_auth_attempts++ > 256) std::this_thread::sleep_for(1s);
                     send_auth_request(t);
@@ -348,7 +351,8 @@
             }
 
             case ADB_AUTH_RSAPUBLICKEY:
-                adbd_auth_confirm_key(p->payload.data(), p->msg.data_length, t);
+                t->auth_key = std::string(p->payload.data());
+                adbd_auth_confirm_key(t);
                 break;
 #endif
             default:
diff --git a/adb/adb.h b/adb/adb.h
index 3a6f059..9324cee 100644
--- a/adb/adb.h
+++ b/adb/adb.h
@@ -33,6 +33,7 @@
 
 constexpr size_t MAX_PAYLOAD_V1 = 4 * 1024;
 constexpr size_t MAX_PAYLOAD = 1024 * 1024;
+constexpr size_t MAX_FRAMEWORK_PAYLOAD = 64 * 1024;
 
 constexpr size_t LINUX_MAX_SOCKET_SIZE = 4194304;
 
diff --git a/adb/adb_auth.h b/adb/adb_auth.h
index 2fc8478..2be9a76 100644
--- a/adb/adb_auth.h
+++ b/adb/adb_auth.h
@@ -50,8 +50,10 @@
 void adbd_auth_verified(atransport *t);
 
 void adbd_cloexec_auth_socket();
-bool adbd_auth_verify(const char* token, size_t token_size, const std::string& sig);
-void adbd_auth_confirm_key(const char* data, size_t len, atransport* t);
+bool adbd_auth_verify(const char* token, size_t token_size, const std::string& sig,
+                      std::string* auth_key);
+void adbd_auth_confirm_key(atransport* t);
+void adbd_notify_framework_connected_key(atransport* t);
 
 void send_auth_request(atransport *t);
 
diff --git a/adb/daemon/auth.cpp b/adb/daemon/auth.cpp
index 1800f84..a18afa4 100644
--- a/adb/daemon/auth.cpp
+++ b/adb/daemon/auth.cpp
@@ -18,6 +18,7 @@
 
 #include "adb.h"
 #include "adb_auth.h"
+#include "adb_io.h"
 #include "fdevent.h"
 #include "sysdeps.h"
 #include "transport.h"
@@ -25,7 +26,9 @@
 #include <resolv.h>
 #include <stdio.h>
 #include <string.h>
+#include <iomanip>
 
+#include <algorithm>
 #include <memory>
 
 #include <android-base/file.h>
@@ -37,22 +40,24 @@
 
 static fdevent* listener_fde = nullptr;
 static fdevent* framework_fde = nullptr;
-static int framework_fd = -1;
+static auto& framework_mutex = *new std::mutex();
+static int framework_fd GUARDED_BY(framework_mutex) = -1;
+static auto& connected_keys GUARDED_BY(framework_mutex) = *new std::vector<std::string>;
 
-static void usb_disconnected(void* unused, atransport* t);
-static struct adisconnect usb_disconnect = { usb_disconnected, nullptr};
-static atransport* usb_transport;
+static void adb_disconnected(void* unused, atransport* t);
+static struct adisconnect adb_disconnect = {adb_disconnected, nullptr};
+static atransport* adb_transport;
 static bool needs_retry = false;
 
 bool auth_required = true;
 
-bool adbd_auth_verify(const char* token, size_t token_size, const std::string& sig) {
+bool adbd_auth_verify(const char* token, size_t token_size, const std::string& sig,
+                      std::string* auth_key) {
     static constexpr const char* key_paths[] = { "/adb_keys", "/data/misc/adb/adb_keys", nullptr };
 
     for (const auto& path : key_paths) {
         if (access(path, R_OK) == 0) {
             LOG(INFO) << "Loading keys from " << path;
-
             std::string content;
             if (!android::base::ReadFileToString(path, &content)) {
                 PLOG(ERROR) << "Couldn't read " << path;
@@ -60,6 +65,8 @@
             }
 
             for (const auto& line : android::base::Split(content, "\n")) {
+                if (line.empty()) continue;
+                *auth_key = line;
                 // TODO: do we really have to support both ' ' and '\t'?
                 char* sep = strpbrk(const_cast<char*>(line.c_str()), " \t");
                 if (sep) *sep = '\0';
@@ -87,9 +94,31 @@
             }
         }
     }
+    auth_key->clear();
     return false;
 }
 
+static bool adbd_send_key_message_locked(std::string_view msg_type, std::string_view key)
+        REQUIRES(framework_mutex) {
+    if (framework_fd < 0) {
+        LOG(ERROR) << "Client not connected to send msg_type " << msg_type;
+        return false;
+    }
+    std::string msg = std::string(msg_type) + std::string(key);
+    int msg_len = msg.length();
+    if (msg_len >= static_cast<int>(MAX_FRAMEWORK_PAYLOAD)) {
+        LOG(ERROR) << "Key too long (" << msg_len << ")";
+        return false;
+    }
+
+    LOG(DEBUG) << "Sending '" << msg << "'";
+    if (!WriteFdExactly(framework_fd, msg.c_str(), msg_len)) {
+        PLOG(ERROR) << "Failed to write " << msg_type;
+        return false;
+    }
+    return true;
+}
+
 static bool adbd_auth_generate_token(void* token, size_t token_size) {
     FILE* fp = fopen("/dev/urandom", "re");
     if (!fp) return false;
@@ -98,17 +127,28 @@
     return okay;
 }
 
-static void usb_disconnected(void* unused, atransport* t) {
-    LOG(INFO) << "USB disconnect";
-    usb_transport = nullptr;
+static void adb_disconnected(void* unused, atransport* t) {
+    LOG(INFO) << "ADB disconnect";
+    adb_transport = nullptr;
     needs_retry = false;
+    {
+        std::lock_guard<std::mutex> lock(framework_mutex);
+        if (framework_fd >= 0) {
+            adbd_send_key_message_locked("DC", t->auth_key);
+        }
+        connected_keys.erase(std::remove(connected_keys.begin(), connected_keys.end(), t->auth_key),
+                             connected_keys.end());
+    }
 }
 
 static void framework_disconnected() {
     LOG(INFO) << "Framework disconnect";
     if (framework_fde) {
         fdevent_destroy(framework_fde);
-        framework_fd = -1;
+        {
+            std::lock_guard<std::mutex> lock(framework_mutex);
+            framework_fd = -1;
+        }
     }
 }
 
@@ -119,41 +159,28 @@
         if (ret <= 0) {
             framework_disconnected();
         } else if (ret == 2 && response[0] == 'O' && response[1] == 'K') {
-            if (usb_transport) {
-                adbd_auth_verified(usb_transport);
+            if (adb_transport) {
+                adbd_auth_verified(adb_transport);
             }
         }
     }
 }
 
-void adbd_auth_confirm_key(const char* key, size_t len, atransport* t) {
-    if (!usb_transport) {
-        usb_transport = t;
-        t->AddDisconnect(&usb_disconnect);
+void adbd_auth_confirm_key(atransport* t) {
+    if (!adb_transport) {
+        adb_transport = t;
+        t->AddDisconnect(&adb_disconnect);
     }
 
-    if (framework_fd < 0) {
-        LOG(ERROR) << "Client not connected";
-        needs_retry = true;
-        return;
-    }
+    {
+        std::lock_guard<std::mutex> lock(framework_mutex);
+        if (framework_fd < 0) {
+            LOG(ERROR) << "Client not connected";
+            needs_retry = true;
+            return;
+        }
 
-    if (key[len - 1] != '\0') {
-        LOG(ERROR) << "Key must be a null-terminated string";
-        return;
-    }
-
-    char msg[MAX_PAYLOAD_V1];
-    int msg_len = snprintf(msg, sizeof(msg), "PK%s", key);
-    if (msg_len >= static_cast<int>(sizeof(msg))) {
-        LOG(ERROR) << "Key too long (" << msg_len << ")";
-        return;
-    }
-    LOG(DEBUG) << "Sending '" << msg << "'";
-
-    if (unix_write(framework_fd, msg, msg_len) == -1) {
-        PLOG(ERROR) << "Failed to write PK";
-        return;
+        adbd_send_key_message_locked("PK", t->auth_key);
     }
 }
 
@@ -164,18 +191,46 @@
         return;
     }
 
-    if (framework_fd >= 0) {
-        LOG(WARNING) << "adb received framework auth socket connection again";
-        framework_disconnected();
+    {
+        std::lock_guard<std::mutex> lock(framework_mutex);
+        if (framework_fd >= 0) {
+            LOG(WARNING) << "adb received framework auth socket connection again";
+            framework_disconnected();
+        }
+
+        framework_fd = s;
+        framework_fde = fdevent_create(framework_fd, adbd_auth_event, nullptr);
+        fdevent_add(framework_fde, FDE_READ);
+
+        if (needs_retry) {
+            needs_retry = false;
+            send_auth_request(adb_transport);
+        }
+
+        // if a client connected before the framework was available notify the framework of the
+        // connected key now.
+        if (!connected_keys.empty()) {
+            for (const auto& key : connected_keys) {
+                adbd_send_key_message_locked("CK", key);
+            }
+        }
     }
+}
 
-    framework_fd = s;
-    framework_fde = fdevent_create(framework_fd, adbd_auth_event, nullptr);
-    fdevent_add(framework_fde, FDE_READ);
-
-    if (needs_retry) {
-        needs_retry = false;
-        send_auth_request(usb_transport);
+void adbd_notify_framework_connected_key(atransport* t) {
+    if (!adb_transport) {
+        adb_transport = t;
+        t->AddDisconnect(&adb_disconnect);
+    }
+    {
+        std::lock_guard<std::mutex> lock(framework_mutex);
+        if (std::find(connected_keys.begin(), connected_keys.end(), t->auth_key) ==
+            connected_keys.end()) {
+            connected_keys.push_back(t->auth_key);
+        }
+        if (framework_fd >= 0) {
+            adbd_send_key_message_locked("CK", t->auth_key);
+        }
     }
 }
 
diff --git a/adb/transport.h b/adb/transport.h
index f4490ed..3473ca2 100644
--- a/adb/transport.h
+++ b/adb/transport.h
@@ -274,6 +274,9 @@
     std::string device;
     std::string devpath;
 
+    // Used to provide the key to the framework.
+    std::string auth_key;
+
     bool IsTcpDevice() const { return type == kTransportLocal; }
 
 #if ADB_HOST
diff --git a/fastboot/fuzzy_fastboot/main.cpp b/fastboot/fuzzy_fastboot/main.cpp
index ff918a7..a1d69d2 100644
--- a/fastboot/fuzzy_fastboot/main.cpp
+++ b/fastboot/fuzzy_fastboot/main.cpp
@@ -244,16 +244,29 @@
 // Testing creation/resize/delete of logical partitions
 TEST_F(LogicalPartitionCompliance, CreateResizeDeleteLP) {
     ASSERT_TRUE(UserSpaceFastboot());
+    std::string test_partition_name = "test_partition";
+    std::string slot_count;
+    // Add suffix to test_partition_name if device is slotted.
+    EXPECT_EQ(fb->GetVar("slot-count", &slot_count), SUCCESS) << "getvar slot-count failed";
+    int32_t num_slots = strtol(slot_count.c_str(), nullptr, 10);
+    if (num_slots > 0) {
+        std::string current_slot;
+        EXPECT_EQ(fb->GetVar("current-slot", &current_slot), SUCCESS)
+                << "getvar current-slot failed";
+        std::string slot_suffix = "_" + current_slot;
+        test_partition_name += slot_suffix;
+    }
+
     GTEST_LOG_(INFO) << "Testing 'fastboot create-logical-partition' command";
-    EXPECT_EQ(fb->CreatePartition("test_partition_a", "0"), SUCCESS)
+    EXPECT_EQ(fb->CreatePartition(test_partition_name, "0"), SUCCESS)
             << "create-logical-partition failed";
     GTEST_LOG_(INFO) << "Testing 'fastboot resize-logical-partition' command";
-    EXPECT_EQ(fb->ResizePartition("test_partition_a", "4096"), SUCCESS)
+    EXPECT_EQ(fb->ResizePartition(test_partition_name, "4096"), SUCCESS)
             << "resize-logical-partition failed";
     std::vector<char> buf(4096);
 
     GTEST_LOG_(INFO) << "Flashing a logical partition..";
-    EXPECT_EQ(fb->FlashPartition("test_partition_a", buf), SUCCESS)
+    EXPECT_EQ(fb->FlashPartition(test_partition_name, buf), SUCCESS)
             << "flash logical -partition failed";
     GTEST_LOG_(INFO) << "Rebooting to bootloader mode";
     // Reboot to bootloader mode and attempt to flash the logical partitions
@@ -262,7 +275,7 @@
     ReconnectFastbootDevice();
     ASSERT_FALSE(UserSpaceFastboot());
     GTEST_LOG_(INFO) << "Attempt to flash a logical partition..";
-    EXPECT_EQ(fb->FlashPartition("test_partition", buf), DEVICE_FAIL)
+    EXPECT_EQ(fb->FlashPartition(test_partition_name, buf), DEVICE_FAIL)
             << "flash logical partition must fail in bootloader";
     GTEST_LOG_(INFO) << "Rebooting back to fastbootd mode";
     fb->RebootTo("fastboot");
@@ -270,7 +283,7 @@
     ReconnectFastbootDevice();
     ASSERT_TRUE(UserSpaceFastboot());
     GTEST_LOG_(INFO) << "Testing 'fastboot delete-logical-partition' command";
-    EXPECT_EQ(fb->DeletePartition("test_partition_a"), SUCCESS)
+    EXPECT_EQ(fb->DeletePartition(test_partition_name), SUCCESS)
             << "delete logical-partition failed";
 }
 
diff --git a/fs_mgr/README.overlayfs.md b/fs_mgr/README.overlayfs.md
index f89e598..d204bfd 100644
--- a/fs_mgr/README.overlayfs.md
+++ b/fs_mgr/README.overlayfs.md
@@ -117,3 +117,25 @@
   be used to clear scratch storage to permit the flash.
   Then reinstate the overrides and continue.
 - File bugs or submit fixes for review.
+- There are other subtle caveats requiring complex logic to solve.
+  Have evaluated them as too complex or not worth the trouble, please
+  File a bug if a use case needs to be covered.
+  - The backing storage is treated fragile, if anything else has
+    issue with the space taken, the backing storage will be cleared
+    out and we reserve the right to not inform, if the layering
+    does not prevent any messaging.
+  - Space remaining threshold is hard coded.  If 1% or more space
+    still remains, overlayfs will not be used, yet that amount of
+    space remaining is problematic.
+  - Flashing a partition via bootloader fastboot, as opposed to user
+    space fastbootd, is not detected, thus a partition may have
+    override content remaining.  adb enable-verity to wipe.
+  - Space is limited, there is near unlimited space on userdata,
+    we have made an architectural decision to not utilize
+    /data/overlay/ at this time.  Acquiring space to use for
+    backing remains an ongoing battle.
+  - First stage init, or ramdisk, can not be overriden.
+  - Backing storage will be discarded or ignored on errors, leading
+    to confusion.  When debugging using **adb remount** it is
+    currently advised to confirm update is present after a reboot
+    to develop confidence.
diff --git a/fs_mgr/fs_mgr_roots.cpp b/fs_mgr/fs_mgr_roots.cpp
index 58ef9b6..1e65587 100644
--- a/fs_mgr/fs_mgr_roots.cpp
+++ b/fs_mgr/fs_mgr_roots.cpp
@@ -101,7 +101,9 @@
         }
     }
 
-    auto mounted = GetMountState(rec->mount_point);
+    const std::string mount_point = mount_pt.empty() ? rec->mount_point : mount_pt;
+
+    auto mounted = GetMountState(mount_point);
     if (mounted == MountState::ERROR) {
         return false;
     }
@@ -109,8 +111,6 @@
         return true;
     }
 
-    const std::string mount_point = mount_pt.empty() ? rec->mount_point : mount_pt;
-
     static const std::vector<std::string> supported_fs{"ext4", "squashfs", "vfat", "f2fs", "none"};
     if (std::find(supported_fs.begin(), supported_fs.end(), rec->fs_type) == supported_fs.end()) {
         LERROR << "unknown fs_type \"" << rec->fs_type << "\" for " << mount_point;
diff --git a/fs_mgr/libdm/dm_target.cpp b/fs_mgr/libdm/dm_target.cpp
index f440e6d..da1013e 100644
--- a/fs_mgr/libdm/dm_target.cpp
+++ b/fs_mgr/libdm/dm_target.cpp
@@ -16,6 +16,9 @@
 
 #include "libdm/dm_target.h"
 
+#include <stdio.h>
+#include <sys/types.h>
+
 #include <android-base/logging.h>
 #include <android-base/macros.h>
 #include <android-base/parseint.h>
@@ -193,5 +196,30 @@
     return true;
 }
 
+std::string DmTargetCrypt::GetParameterString() const {
+    std::vector<std::string> argv = {
+            cipher_,
+            key_,
+            std::to_string(iv_sector_offset_),
+            device_,
+            std::to_string(device_sector_),
+    };
+
+    std::vector<std::string> extra_argv;
+    if (allow_discards_) extra_argv.emplace_back("allow_discards");
+    if (allow_encrypt_override_) extra_argv.emplace_back("allow_encrypt_override");
+    if (iv_large_sectors_) extra_argv.emplace_back("iv_large_sectors");
+    if (sector_size_) extra_argv.emplace_back("sector_size:" + std::to_string(sector_size_));
+
+    if (!extra_argv.empty()) argv.emplace_back(std::to_string(extra_argv.size()));
+
+    argv.insert(argv.end(), extra_argv.begin(), extra_argv.end());
+    return android::base::Join(argv, " ");
+}
+
+std::string DmTargetDefaultKey::GetParameterString() const {
+    return cipher_ + " " + key_ + " " + blockdev_ + " " + std::to_string(start_sector_);
+}
+
 }  // namespace dm
 }  // namespace android
diff --git a/fs_mgr/libdm/dm_test.cpp b/fs_mgr/libdm/dm_test.cpp
index 72a0e11..dc47c33 100644
--- a/fs_mgr/libdm/dm_test.cpp
+++ b/fs_mgr/libdm/dm_test.cpp
@@ -438,3 +438,26 @@
         ASSERT_EQ(status.error, "Invalid");
     }
 }
+
+TEST(libdm, CryptArgs) {
+    DmTargetCrypt target1(0, 512, "sha1", "abcdefgh", 50, "/dev/loop0", 100);
+    ASSERT_EQ(target1.name(), "crypt");
+    ASSERT_TRUE(target1.Valid());
+    ASSERT_EQ(target1.GetParameterString(), "sha1 abcdefgh 50 /dev/loop0 100");
+
+    DmTargetCrypt target2(0, 512, "sha1", "abcdefgh", 50, "/dev/loop0", 100);
+    target2.SetSectorSize(64);
+    target2.AllowDiscards();
+    target2.SetIvLargeSectors();
+    target2.AllowEncryptOverride();
+    ASSERT_EQ(target2.GetParameterString(),
+              "sha1 abcdefgh 50 /dev/loop0 100 4 allow_discards allow_encrypt_override "
+              "iv_large_sectors sector_size:64");
+}
+
+TEST(libdm, DefaultKeyArgs) {
+    DmTargetDefaultKey target(0, 4096, "AES-256-XTS", "abcdef0123456789", "/dev/loop0", 0);
+    ASSERT_EQ(target.name(), "default-key");
+    ASSERT_TRUE(target.Valid());
+    ASSERT_EQ(target.GetParameterString(), "AES-256-XTS abcdef0123456789 /dev/loop0 0");
+}
diff --git a/fs_mgr/libdm/include/libdm/dm_table.h b/fs_mgr/libdm/include/libdm/dm_table.h
index 5c639be..ee66653 100644
--- a/fs_mgr/libdm/include/libdm/dm_table.h
+++ b/fs_mgr/libdm/include/libdm/dm_table.h
@@ -43,12 +43,20 @@
     // successfully removed.
     bool RemoveTarget(std::unique_ptr<DmTarget>&& target);
 
+    // Adds a target, constructing it in-place for convenience. For example,
+    //
+    //   table.Emplace<DmTargetZero>(0, num_sectors);
+    template <typename T, typename... Args>
+    bool Emplace(Args&&... args) {
+        return AddTarget(std::make_unique<T>(std::forward<Args>(args)...));
+    }
+
     // Checks the table to make sure it is valid. i.e. Checks for range overlaps, range gaps
     // and returns 'true' if the table is ready to be loaded into kernel. Returns 'false' if the
     // table is malformed.
     bool valid() const;
 
-    // Returns the toatl number of targets.
+    // Returns the total number of targets.
     size_t num_targets() const { return targets_.size(); }
 
     // Returns the total size represented by the table in terms of number of 512-byte sectors.
diff --git a/fs_mgr/libdm/include/libdm/dm_target.h b/fs_mgr/libdm/include/libdm/dm_target.h
index fce1175..722922d 100644
--- a/fs_mgr/libdm/include/libdm/dm_target.h
+++ b/fs_mgr/libdm/include/libdm/dm_target.h
@@ -241,6 +241,60 @@
     std::string device_;
 };
 
+class DmTargetCrypt final : public DmTarget {
+  public:
+    DmTargetCrypt(uint64_t start, uint64_t length, const std::string& cipher,
+                  const std::string& key, uint64_t iv_sector_offset, const std::string& device,
+                  uint64_t device_sector)
+        : DmTarget(start, length),
+          cipher_(cipher),
+          key_(key),
+          iv_sector_offset_(iv_sector_offset),
+          device_(device),
+          device_sector_(device_sector) {}
+
+    void AllowDiscards() { allow_discards_ = true; }
+    void AllowEncryptOverride() { allow_encrypt_override_ = true; }
+    void SetIvLargeSectors() { iv_large_sectors_ = true; }
+    void SetSectorSize(uint32_t sector_size) { sector_size_ = sector_size; }
+
+    std::string name() const override { return "crypt"; }
+    bool Valid() const override { return true; }
+    std::string GetParameterString() const override;
+
+  private:
+    std::string cipher_;
+    std::string key_;
+    uint64_t iv_sector_offset_;
+    std::string device_;
+    uint64_t device_sector_;
+    bool allow_discards_ = false;
+    bool allow_encrypt_override_ = false;
+    bool iv_large_sectors_ = false;
+    uint32_t sector_size_ = 0;
+};
+
+class DmTargetDefaultKey final : public DmTarget {
+  public:
+    DmTargetDefaultKey(uint64_t start, uint64_t length, const std::string& cipher,
+                       const std::string& key, const std::string& blockdev, uint64_t start_sector)
+        : DmTarget(start, length),
+          cipher_(cipher),
+          key_(key),
+          blockdev_(blockdev),
+          start_sector_(start_sector) {}
+
+    std::string name() const override { return "default-key"; }
+    bool Valid() const override { return true; }
+    std::string GetParameterString() const override;
+
+  private:
+    std::string cipher_;
+    std::string key_;
+    std::string blockdev_;
+    uint64_t start_sector_;
+};
+
 }  // namespace dm
 }  // namespace android
 
diff --git a/gatekeeperd/gatekeeperd.cpp b/gatekeeperd/gatekeeperd.cpp
index 8700c34..5451819 100644
--- a/gatekeeperd/gatekeeperd.cpp
+++ b/gatekeeperd/gatekeeperd.cpp
@@ -273,7 +273,8 @@
         }
 
         // can't verify if we're missing either param
-        if ((enrolled_password_handle_length | provided_password_length) == 0)
+        if (enrolled_password_handle == nullptr || provided_password == nullptr ||
+            enrolled_password_handle_length == 0 || provided_password_length == 0)
             return -EINVAL;
 
         int ret;
@@ -322,7 +323,7 @@
 
                 if (ret == 0) {
                     // success! re-enroll with HAL
-                    *request_reenroll = true;
+                    if (request_reenroll != nullptr) *request_reenroll = true;
                 }
             }
         } else {
diff --git a/libcutils/include/cutils/native_handle.h b/libcutils/include/cutils/native_handle.h
index f6cae36..4f07456 100644
--- a/libcutils/include/cutils/native_handle.h
+++ b/libcutils/include/cutils/native_handle.h
@@ -69,10 +69,11 @@
 
 /*
  * native_handle_create
- * 
+ *
  * creates a native_handle_t and initializes it. must be destroyed with
- * native_handle_delete().
- * 
+ * native_handle_delete(). Note that numFds must be <= NATIVE_HANDLE_MAX_FDS,
+ * numInts must be <= NATIVE_HANDLE_MAX_INTS, and both must be >= 0.
+ *
  */
 native_handle_t* native_handle_create(int numFds, int numInts);
 
diff --git a/libstats/statsd_writer.c b/libstats/statsd_writer.c
index b778f92..b1c05ea 100644
--- a/libstats/statsd_writer.c
+++ b/libstats/statsd_writer.c
@@ -109,6 +109,11 @@
         if (sock < 0) {
             ret = -errno;
         } else {
+            int sndbuf = 1 * 1024 * 1024;  // set max send buffer size 1MB
+            socklen_t bufLen = sizeof(sndbuf);
+            // SO_RCVBUF does not have an effect on unix domain socket, but SO_SNDBUF does.
+            // Proceed to connect even setsockopt fails.
+            setsockopt(sock, SOL_SOCKET, SO_SNDBUF, &sndbuf, bufLen);
             struct sockaddr_un un;
             memset(&un, 0, sizeof(struct sockaddr_un));
             un.sun_family = AF_UNIX;
diff --git a/libsync/Android.bp b/libsync/Android.bp
index e56f8ba..c996e1b 100644
--- a/libsync/Android.bp
+++ b/libsync/Android.bp
@@ -23,6 +23,7 @@
 cc_library {
     name: "libsync",
     recovery_available: true,
+    native_bridge_supported: true,
     defaults: ["libsync_defaults"],
 }
 
diff --git a/libsystem/include/system/graphics-base-v1.2.h b/libsystem/include/system/graphics-base-v1.2.h
new file mode 100644
index 0000000..2194f5e
--- /dev/null
+++ b/libsystem/include/system/graphics-base-v1.2.h
@@ -0,0 +1,31 @@
+// This file is autogenerated by hidl-gen. Do not edit manually.
+// Source: android.hardware.graphics.common@1.2
+// Location: hardware/interfaces/graphics/common/1.2/
+
+#ifndef HIDL_GENERATED_ANDROID_HARDWARE_GRAPHICS_COMMON_V1_2_EXPORTED_CONSTANTS_H_
+#define HIDL_GENERATED_ANDROID_HARDWARE_GRAPHICS_COMMON_V1_2_EXPORTED_CONSTANTS_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef enum {
+    HAL_HDR_HDR10_PLUS = 4,
+} android_hdr_v1_2_t;
+
+typedef enum {
+    HAL_DATASPACE_DISPLAY_BT2020 = 142999552 /* ((STANDARD_BT2020 | TRANSFER_SRGB) | RANGE_FULL) */,
+    HAL_DATASPACE_DYNAMIC_DEPTH = 4098 /* 0x1002 */,
+    HAL_DATASPACE_JPEG_APP_SEGMENTS = 4099 /* 0x1003 */,
+    HAL_DATASPACE_HEIF = 4100 /* 0x1004 */,
+} android_dataspace_v1_2_t;
+
+typedef enum {
+    HAL_PIXEL_FORMAT_HSV_888 = 55 /* 0x37 */,
+} android_pixel_format_v1_2_t;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif  // HIDL_GENERATED_ANDROID_HARDWARE_GRAPHICS_COMMON_V1_2_EXPORTED_CONSTANTS_H_
diff --git a/libsystem/include/system/graphics-base.h b/libsystem/include/system/graphics-base.h
index ea92007..92ee077 100644
--- a/libsystem/include/system/graphics-base.h
+++ b/libsystem/include/system/graphics-base.h
@@ -3,5 +3,6 @@
 
 #include "graphics-base-v1.0.h"
 #include "graphics-base-v1.1.h"
+#include "graphics-base-v1.2.h"
 
 #endif  // SYSTEM_CORE_GRAPHICS_BASE_H_
diff --git a/logd/tests/Android.bp b/logd/tests/Android.bp
index 83a194f..d39da8a 100644
--- a/logd/tests/Android.bp
+++ b/logd/tests/Android.bp
@@ -35,12 +35,12 @@
 
     srcs: ["logd_test.cpp"],
 
-    shared_libs: [
+    static_libs: [
         "libbase",
         "libcutils",
         "libselinux",
+        "liblog",
     ],
-    static_libs: ["liblog"],
 }
 
 // Build tests for the logger. Run with:
diff --git a/rootdir/etc/public.libraries.android.txt b/rootdir/etc/public.libraries.android.txt
index d8f6095..27e855f 100644
--- a/rootdir/etc/public.libraries.android.txt
+++ b/rootdir/etc/public.libraries.android.txt
@@ -1,6 +1,7 @@
 # See https://android.googlesource.com/platform/ndk/+/master/docs/PlatformApis.md
 libandroid.so
 libaaudio.so
+libamidi.so
 libbinder_ndk.so
 libc.so
 libcamera2ndk.so
diff --git a/rootdir/etc/public.libraries.iot.txt b/rootdir/etc/public.libraries.iot.txt
index 20905bf..b565340 100644
--- a/rootdir/etc/public.libraries.iot.txt
+++ b/rootdir/etc/public.libraries.iot.txt
@@ -2,6 +2,7 @@
 libandroid.so
 libandroidthings.so
 libaaudio.so
+libamidi.so
 libbinder_ndk.so
 libc.so
 libcamera2ndk.so
diff --git a/rootdir/etc/public.libraries.wear.txt b/rootdir/etc/public.libraries.wear.txt
index 4ece5b5..7cbda08 100644
--- a/rootdir/etc/public.libraries.wear.txt
+++ b/rootdir/etc/public.libraries.wear.txt
@@ -1,6 +1,7 @@
 # See https://android.googlesource.com/platform/ndk/+/master/docs/PlatformApis.md
 libandroid.so
 libaaudio.so
+libamidi.so
 libbinder_ndk.so
 libc.so
 libcamera2ndk.so
diff --git a/rootdir/init.rc b/rootdir/init.rc
index 84fa46e..1b7367c 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -662,6 +662,12 @@
     chown root system /sys/module/lowmemorykiller/parameters/minfree
     chmod 0664 /sys/module/lowmemorykiller/parameters/minfree
 
+    # System server manages zram writeback
+    chown root system /sys/block/zram0/idle
+    chmod 0664 /sys/block/zram0/idle
+    chown root system /sys/block/zram0/writeback
+    chmod 0664 /sys/block/zram0/writeback
+
     # Tweak background writeout
     write /proc/sys/vm/dirty_expire_centisecs 200
     write /proc/sys/vm/dirty_background_ratio  5
diff --git a/rootdir/init.usb.rc b/rootdir/init.usb.rc
index f0681d2..b6cba90 100644
--- a/rootdir/init.usb.rc
+++ b/rootdir/init.usb.rc
@@ -14,7 +14,7 @@
 # adbd is controlled via property triggers in init.<platform>.usb.rc
 service adbd /system/bin/adbd --root_seclabel=u:r:su:s0
     class core
-    socket adbd stream 660 system system
+    socket adbd seqpacket 660 system system
     disabled
     seclabel u:r:adbd:s0
 
diff --git a/rootdir/init.zygote32.rc b/rootdir/init.zygote32.rc
index f8e680d..bf3fb42 100644
--- a/rootdir/init.zygote32.rc
+++ b/rootdir/init.zygote32.rc
@@ -4,7 +4,7 @@
     user root
     group root readproc reserved_disk
     socket zygote stream 660 root system
-    socket blastula_pool stream 660 root system
+    socket usap_pool_primary stream 660 root system
     onrestart write /sys/android_power/request_state wake
     onrestart write /sys/power/state on
     onrestart restart audioserver
diff --git a/rootdir/init.zygote32_64.rc b/rootdir/init.zygote32_64.rc
index 0235370..1bab588 100644
--- a/rootdir/init.zygote32_64.rc
+++ b/rootdir/init.zygote32_64.rc
@@ -4,7 +4,7 @@
     user root
     group root readproc reserved_disk
     socket zygote stream 660 root system
-    socket blastula_pool stream 660 root system
+    socket usap_pool_primary stream 660 root system
     onrestart write /sys/android_power/request_state wake
     onrestart write /sys/power/state on
     onrestart restart audioserver
@@ -20,6 +20,6 @@
     user root
     group root readproc reserved_disk
     socket zygote_secondary stream 660 root system
-    socket blastula_pool_secondary stream 660 root system
+    socket usap_pool_secondary stream 660 root system
     onrestart restart zygote
     writepid /dev/cpuset/foreground/tasks
diff --git a/rootdir/init.zygote64.rc b/rootdir/init.zygote64.rc
index 3f3cc15..6fa210a 100644
--- a/rootdir/init.zygote64.rc
+++ b/rootdir/init.zygote64.rc
@@ -4,7 +4,7 @@
     user root
     group root readproc reserved_disk
     socket zygote stream 660 root system
-    socket blastula_pool stream 660 root system
+    socket usap_pool_primary stream 660 root system
     onrestart write /sys/android_power/request_state wake
     onrestart write /sys/power/state on
     onrestart restart audioserver
diff --git a/rootdir/init.zygote64_32.rc b/rootdir/init.zygote64_32.rc
index fae38c9..48461ec 100644
--- a/rootdir/init.zygote64_32.rc
+++ b/rootdir/init.zygote64_32.rc
@@ -4,7 +4,7 @@
     user root
     group root readproc reserved_disk
     socket zygote stream 660 root system
-    socket blastula_pool stream 660 root system
+    socket usap_pool_primary stream 660 root system
     onrestart write /sys/android_power/request_state wake
     onrestart write /sys/power/state on
     onrestart restart audioserver
@@ -20,6 +20,6 @@
     user root
     group root readproc reserved_disk
     socket zygote_secondary stream 660 root system
-    socket blastula_pool_secondary stream 660 root system
+    socket usap_pool_secondary stream 660 root system
     onrestart restart zygote
     writepid /dev/cpuset/foreground/tasks