diff --git a/adb/Android.bp b/adb/Android.bp
index 170053b..d14fe56 100644
--- a/adb/Android.bp
+++ b/adb/Android.bp
@@ -428,18 +428,10 @@
                 "daemon/abb_service.cpp",
                 "daemon/framebuffer_service.cpp",
                 "daemon/mdns.cpp",
-                "daemon/reboot_service.cpp",
                 "daemon/restart_service.cpp",
-                "daemon/set_verity_enable_state_service.cpp",
-            ],
-            static_libs: [
-                "libavb_user",
             ],
             shared_libs: [
-                "libbootloader_message",
                 "libmdnssd",
-                "libfec",
-                "libfs_mgr",
                 "libselinux",
             ],
         },
@@ -513,6 +505,22 @@
     ],
 }
 
+phony {
+    name: "adbd_system_binaries",
+    required: [
+        "abb",
+        "reboot",
+        "set-verity-state",
+    ]
+}
+
+phony {
+    name: "adbd_system_binaries_recovery",
+    required: [
+        "reboot.recovery",
+    ],
+}
+
 cc_binary {
     name: "static_adbd",
     defaults: ["adbd_defaults", "host_adbd_supported"],
@@ -608,7 +616,6 @@
     static_libs: [
         "libadbd",
         "libbase",
-        "libbootloader_message",
         "libcutils",
         "libcrypto_utils",
         "libcrypto_static",
diff --git a/adb/daemon/reboot_service.cpp b/adb/daemon/reboot_service.cpp
deleted file mode 100644
index 13398af..0000000
--- a/adb/daemon/reboot_service.cpp
+++ /dev/null
@@ -1,84 +0,0 @@
-/*
- * Copyright (C) 2018 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 TRACE_TAG SERVICES
-
-#include "sysdeps.h"
-
-#include <stdlib.h>
-#include <sys/socket.h>
-#include <sys/un.h>
-#include <unistd.h>
-
-#include <string>
-
-#include <android-base/logging.h>
-#include <android-base/properties.h>
-#include <android-base/stringprintf.h>
-#include <bootloader_message/bootloader_message.h>
-#include <cutils/android_reboot.h>
-
-#include "adb_io.h"
-#include "adb_unique_fd.h"
-
-void reboot_service(unique_fd fd, const std::string& arg) {
-    std::string reboot_arg = arg;
-    sync();
-
-    if (reboot_arg.empty()) reboot_arg = "adb";
-    std::string reboot_string = android::base::StringPrintf("reboot,%s", reboot_arg.c_str());
-
-    if (reboot_arg == "fastboot" &&
-        android::base::GetBoolProperty("ro.boot.dynamic_partitions", false) &&
-        access("/dev/socket/recovery", F_OK) == 0) {
-        LOG(INFO) << "Recovery specific reboot fastboot";
-        /*
-         * The socket is created to allow switching between recovery and
-         * fastboot.
-         */
-        android::base::unique_fd sock(socket(AF_UNIX, SOCK_STREAM, 0));
-        if (sock < 0) {
-            WriteFdFmt(fd, "reboot (%s) create\n", strerror(errno));
-            PLOG(ERROR) << "Creating recovery socket failed";
-            return;
-        }
-
-        sockaddr_un addr = {.sun_family = AF_UNIX};
-        strncpy(addr.sun_path, "/dev/socket/recovery", sizeof(addr.sun_path) - 1);
-        if (connect(sock.get(), reinterpret_cast<sockaddr*>(&addr), sizeof(addr)) == -1) {
-            WriteFdFmt(fd, "reboot (%s) connect\n", strerror(errno));
-            PLOG(ERROR) << "Couldn't connect to recovery socket";
-            return;
-        }
-        const char msg_switch_to_fastboot = 'f';
-        auto ret = adb_write(sock, &msg_switch_to_fastboot, sizeof(msg_switch_to_fastboot));
-        if (ret != sizeof(msg_switch_to_fastboot)) {
-            WriteFdFmt(fd, "reboot (%s) write\n", strerror(errno));
-            PLOG(ERROR) << "Couldn't write message to recovery socket to switch to fastboot";
-            return;
-        }
-    } else {
-        if (!android::base::SetProperty(ANDROID_RB_PROPERTY, reboot_string)) {
-            WriteFdFmt(fd.get(), "reboot (%s) failed\n", reboot_string.c_str());
-            return;
-        }
-    }
-    // Don't return early. Give the reboot command time to take effect
-    // to avoid messing up scripts which do "adb reboot && adb wait-for-device"
-    while (true) {
-        pause();
-    }
-}
diff --git a/adb/daemon/reboot_service.h b/adb/daemon/reboot_service.h
deleted file mode 100644
index f68913e..0000000
--- a/adb/daemon/reboot_service.h
+++ /dev/null
@@ -1,25 +0,0 @@
-/*
- * Copyright (C) 2018 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.
- */
-
-#pragma once
-
-#include <string>
-
-#include "adb_unique_fd.h"
-
-#if defined(__ANDROID__)
-void reboot_service(unique_fd fd, const std::string& arg);
-#endif
diff --git a/adb/daemon/services.cpp b/adb/daemon/services.cpp
index 181a8c5..a44c10b 100644
--- a/adb/daemon/services.cpp
+++ b/adb/daemon/services.cpp
@@ -53,9 +53,7 @@
 
 #include "daemon/file_sync_service.h"
 #include "daemon/framebuffer_service.h"
-#include "daemon/reboot_service.h"
 #include "daemon/restart_service.h"
-#include "daemon/set_verity_enable_state_service.h"
 #include "daemon/shell_service.h"
 
 
@@ -254,9 +252,9 @@
         cmd += name;
         return StartSubprocess(cmd, nullptr, SubprocessType::kRaw, SubprocessProtocol::kNone);
     } else if (android::base::ConsumePrefix(&name, "reboot:")) {
-        std::string arg(name);
-        return create_service_thread("reboot",
-                                     std::bind(reboot_service, std::placeholders::_1, arg));
+        std::string cmd = "/system/bin/reboot ";
+        cmd += name;
+        return StartSubprocess(cmd, nullptr, SubprocessType::kRaw, SubprocessProtocol::kNone);
     } else if (name.starts_with("root:")) {
         return create_service_thread("root", restart_root_service);
     } else if (name.starts_with("unroot:")) {
@@ -269,11 +267,11 @@
         return StartSubprocess("/system/bin/bu restore", nullptr, SubprocessType::kRaw,
                                SubprocessProtocol::kNone);
     } else if (name.starts_with("disable-verity:")) {
-        return create_service_thread("verity-on", std::bind(set_verity_enabled_state_service,
-                                                            std::placeholders::_1, false));
+        return StartSubprocess("/system/bin/disable-verity", nullptr, SubprocessType::kRaw,
+                               SubprocessProtocol::kNone);
     } else if (name.starts_with("enable-verity:")) {
-        return create_service_thread("verity-off", std::bind(set_verity_enabled_state_service,
-                                                             std::placeholders::_1, true));
+        return StartSubprocess("/system/bin/enable-verity", nullptr, SubprocessType::kRaw,
+                               SubprocessProtocol::kNone);
     } else if (android::base::ConsumePrefix(&name, "tcpip:")) {
         std::string str(name);
 
diff --git a/adb/daemon/set_verity_enable_state_service.cpp b/adb/daemon/set_verity_enable_state_service.cpp
deleted file mode 100644
index 4fbccdb..0000000
--- a/adb/daemon/set_verity_enable_state_service.cpp
+++ /dev/null
@@ -1,250 +0,0 @@
-/*
- * Copyright (C) 2014 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 TRACE_TAG ADB
-
-#include "set_verity_enable_state_service.h"
-#include "sysdeps.h"
-
-#include <errno.h>
-#include <fcntl.h>
-#include <inttypes.h>
-#include <libavb_user/libavb_user.h>
-#include <stdarg.h>
-#include <stdio.h>
-#include <sys/mount.h>
-#include <sys/stat.h>
-
-#include <android-base/properties.h>
-#include <android-base/stringprintf.h>
-#include <fs_mgr.h>
-#include <fs_mgr_overlayfs.h>
-#include <fstab/fstab.h>
-#include <log/log_properties.h>
-
-#include "adb.h"
-#include "adb_io.h"
-#include "adb_unique_fd.h"
-
-#include "fec/io.h"
-
-#ifdef ALLOW_ADBD_DISABLE_VERITY
-static const bool kAllowDisableVerity = true;
-#else
-static const bool kAllowDisableVerity = false;
-#endif
-
-void suggest_run_adb_root(int fd) {
-    if (getuid() != 0) WriteFdExactly(fd, "Maybe run adb root?\n");
-}
-
-static bool make_block_device_writable(const std::string& dev) {
-    unique_fd fd(unix_open(dev, O_RDONLY | O_CLOEXEC));
-    if (fd == -1) {
-        return false;
-    }
-
-    int OFF = 0;
-    bool result = (ioctl(fd.get(), BLKROSET, &OFF) != -1);
-    return result;
-}
-
-/* Turn verity on/off */
-static bool set_verity_enabled_state(int fd, const char* block_device, const char* mount_point,
-                                     bool enable) {
-    if (!make_block_device_writable(block_device)) {
-        WriteFdFmt(fd, "Could not make block device %s writable (%s).\n",
-                   block_device, strerror(errno));
-        return false;
-    }
-
-    fec::io fh(block_device, O_RDWR);
-
-    if (!fh) {
-        WriteFdFmt(fd, "Could not open block device %s (%s).\n", block_device, strerror(errno));
-        suggest_run_adb_root(fd);
-        return false;
-    }
-
-    fec_verity_metadata metadata;
-
-    if (!fh.get_verity_metadata(metadata)) {
-        WriteFdExactly(fd, "Couldn't find verity metadata!\n");
-        return false;
-    }
-
-    if (!enable && metadata.disabled) {
-        WriteFdFmt(fd, "Verity already disabled on %s\n", mount_point);
-        return false;
-    }
-
-    if (enable && !metadata.disabled) {
-        WriteFdFmt(fd, "Verity already enabled on %s\n", mount_point);
-        return false;
-    }
-
-    if (!fh.set_verity_status(enable)) {
-        WriteFdFmt(fd, "Could not set verity %s flag on device %s with error %s\n",
-                   enable ? "enabled" : "disabled",
-                   block_device, strerror(errno));
-        return false;
-    }
-
-    auto change = false;
-    errno = 0;
-    if (enable ? fs_mgr_overlayfs_teardown(mount_point, &change)
-               : fs_mgr_overlayfs_setup(nullptr, mount_point, &change)) {
-        if (change) {
-            WriteFdFmt(fd, "%s overlayfs for %s\n", enable ? "disabling" : "using", mount_point);
-        }
-    } else if (errno) {
-        int expected_errno = enable ? EBUSY : ENOENT;
-        if (errno != expected_errno) {
-            WriteFdFmt(fd, "Overlayfs %s for %s failed with error %s\n",
-                       enable ? "teardown" : "setup", mount_point, strerror(errno));
-        }
-    }
-    WriteFdFmt(fd, "Verity %s on %s\n", enable ? "enabled" : "disabled", mount_point);
-    return true;
-}
-
-/* Helper function to get A/B suffix, if any. If the device isn't
- * using A/B the empty string is returned. Otherwise either "_a",
- * "_b", ... is returned.
- */
-static std::string get_ab_suffix() {
-    return android::base::GetProperty("ro.boot.slot_suffix", "");
-}
-
-static bool is_avb_device_locked() {
-    return android::base::GetProperty("ro.boot.vbmeta.device_state", "") == "locked";
-}
-
-static bool overlayfs_setup(int fd, bool enable) {
-    auto change = false;
-    errno = 0;
-    if (enable ? fs_mgr_overlayfs_teardown(nullptr, &change)
-               : fs_mgr_overlayfs_setup(nullptr, nullptr, &change)) {
-        if (change) {
-            WriteFdFmt(fd, "%s overlayfs\n", enable ? "disabling" : "using");
-        }
-    } else if (errno) {
-        WriteFdFmt(fd, "Overlayfs %s failed with error %s\n", enable ? "teardown" : "setup",
-                   strerror(errno));
-        suggest_run_adb_root(fd);
-    }
-    return change;
-}
-
-/* Use AVB to turn verity on/off */
-static bool set_avb_verity_enabled_state(int fd, AvbOps* ops, bool enable_verity) {
-    std::string ab_suffix = get_ab_suffix();
-    bool verity_enabled;
-
-    if (is_avb_device_locked()) {
-        WriteFdExactly(fd, "Device is locked. Please unlock the device first\n");
-        return false;
-    }
-
-    if (!avb_user_verity_get(ops, ab_suffix.c_str(), &verity_enabled)) {
-        WriteFdExactly(fd, "Error getting verity state. Try adb root first?\n");
-        return false;
-    }
-
-    if ((verity_enabled && enable_verity) || (!verity_enabled && !enable_verity)) {
-        WriteFdFmt(fd, "verity is already %s\n", verity_enabled ? "enabled" : "disabled");
-        return false;
-    }
-
-    if (!avb_user_verity_set(ops, ab_suffix.c_str(), enable_verity)) {
-        WriteFdExactly(fd, "Error setting verity\n");
-        return false;
-    }
-
-    overlayfs_setup(fd, enable_verity);
-    WriteFdFmt(fd, "Successfully %s verity\n", enable_verity ? "enabled" : "disabled");
-    return true;
-}
-
-void set_verity_enabled_state_service(unique_fd fd, bool enable) {
-    bool any_changed = false;
-
-    // Figure out if we're using VB1.0 or VB2.0 (aka AVB) - by
-    // contract, androidboot.vbmeta.digest is set by the bootloader
-    // when using AVB).
-    bool using_avb = !android::base::GetProperty("ro.boot.vbmeta.digest", "").empty();
-
-    // If using AVB, dm-verity is used on any build so we want it to
-    // be possible to disable/enable on any build (except USER). For
-    // VB1.0 dm-verity is only enabled on certain builds.
-    if (!using_avb) {
-        if (!kAllowDisableVerity) {
-            WriteFdFmt(fd.get(), "%s-verity only works for userdebug builds\n",
-                       enable ? "enable" : "disable");
-        }
-
-        if (!android::base::GetBoolProperty("ro.secure", false)) {
-            overlayfs_setup(fd.get(), enable);
-            WriteFdExactly(fd.get(), "verity not enabled - ENG build\n");
-            return;
-        }
-    }
-
-    // Should never be possible to disable dm-verity on a USER build
-    // regardless of using AVB or VB1.0.
-    if (!__android_log_is_debuggable()) {
-        WriteFdExactly(fd.get(), "verity cannot be disabled/enabled - USER build\n");
-        return;
-    }
-
-    if (using_avb) {
-        // Yep, the system is using AVB.
-        AvbOps* ops = avb_ops_user_new();
-        if (ops == nullptr) {
-            WriteFdExactly(fd.get(), "Error getting AVB ops\n");
-            return;
-        }
-        if (set_avb_verity_enabled_state(fd.get(), ops, enable)) {
-            any_changed = true;
-        }
-        avb_ops_user_free(ops);
-    } else {
-        // Not using AVB - assume VB1.0.
-
-        // read all fstab entries at once from all sources
-        android::fs_mgr::Fstab fstab;
-        if (!android::fs_mgr::ReadDefaultFstab(&fstab)) {
-            WriteFdExactly(fd.get(), "Failed to read fstab\n");
-            suggest_run_adb_root(fd.get());
-            return;
-        }
-
-        // Loop through entries looking for ones that verity manages.
-        for (const auto& entry : fstab) {
-            if (entry.fs_mgr_flags.verify) {
-                if (set_verity_enabled_state(fd.get(), entry.blk_device.c_str(),
-                                             entry.mount_point.c_str(), enable)) {
-                    any_changed = true;
-                }
-            }
-        }
-    }
-    if (!any_changed) any_changed = overlayfs_setup(fd.get(), enable);
-
-    if (any_changed) {
-        WriteFdExactly(fd.get(), "Now reboot your device for settings to take effect\n");
-    }
-}
diff --git a/adb/daemon/set_verity_enable_state_service.h b/adb/daemon/set_verity_enable_state_service.h
deleted file mode 100644
index c0ed98e..0000000
--- a/adb/daemon/set_verity_enable_state_service.h
+++ /dev/null
@@ -1,23 +0,0 @@
-/*
- * Copyright (C) 2018 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.
- */
-
-#pragma once
-
-#include "adb_unique_fd.h"
-
-#if defined(__ANDROID__)
-void set_verity_enabled_state_service(unique_fd fd, bool enable);
-#endif
diff --git a/adb/fastdeploy/Android.bp b/adb/fastdeploy/Android.bp
index 245d52a..f5893aa 100644
--- a/adb/fastdeploy/Android.bp
+++ b/adb/fastdeploy/Android.bp
@@ -27,6 +27,7 @@
 
 java_binary {
     name: "deployagent",
+    sdk_version: "24",
     static_libs: [
         "deployagent_lib",
     ],
diff --git a/fastboot/device/commands.h b/fastboot/device/commands.h
index afd6d08..9b6e7b6 100644
--- a/fastboot/device/commands.h
+++ b/fastboot/device/commands.h
@@ -19,7 +19,7 @@
 #include <string>
 #include <vector>
 
-constexpr unsigned int kMaxDownloadSizeDefault = 0x20000000;
+constexpr unsigned int kMaxDownloadSizeDefault = 0x10000000;
 
 class FastbootDevice;
 
diff --git a/fs_mgr/libsnapshot/include/libsnapshot/snapshot.h b/fs_mgr/libsnapshot/include/libsnapshot/snapshot.h
index fcaa73a..120340c 100644
--- a/fs_mgr/libsnapshot/include/libsnapshot/snapshot.h
+++ b/fs_mgr/libsnapshot/include/libsnapshot/snapshot.h
@@ -19,6 +19,7 @@
 #include <chrono>
 #include <map>
 #include <memory>
+#include <optional>
 #include <ostream>
 #include <string>
 #include <string_view>
@@ -298,7 +299,8 @@
                      std::string* dev_path);
 
     // Map a COW image that was previous created with CreateCowImage.
-    bool MapCowImage(const std::string& name, const std::chrono::milliseconds& timeout_ms);
+    std::optional<std::string> MapCowImage(const std::string& name,
+                                           const std::chrono::milliseconds& timeout_ms);
 
     // Remove the backing copy-on-write image and snapshot states for the named snapshot. The
     // caller is responsible for ensuring that the snapshot is unmapped.
diff --git a/fs_mgr/libsnapshot/snapshot.cpp b/fs_mgr/libsnapshot/snapshot.cpp
index 696734e..758f69b 100644
--- a/fs_mgr/libsnapshot/snapshot.cpp
+++ b/fs_mgr/libsnapshot/snapshot.cpp
@@ -449,9 +449,9 @@
     return true;
 }
 
-bool SnapshotManager::MapCowImage(const std::string& name,
-                                  const std::chrono::milliseconds& timeout_ms) {
-    if (!EnsureImageManager()) return false;
+std::optional<std::string> SnapshotManager::MapCowImage(
+        const std::string& name, const std::chrono::milliseconds& timeout_ms) {
+    if (!EnsureImageManager()) return std::nullopt;
     auto cow_image_name = GetCowImageDeviceName(name);
 
     bool ok;
@@ -467,10 +467,10 @@
 
     if (ok) {
         LOG(INFO) << "Mapped " << cow_image_name << " to " << cow_dev;
-    } else {
-        LOG(ERROR) << "Could not map image device: " << cow_image_name;
+        return cow_dev;
     }
-    return ok;
+    LOG(ERROR) << "Could not map image device: " << cow_image_name;
+    return std::nullopt;
 }
 
 bool SnapshotManager::UnmapSnapshot(LockedFile* lock, const std::string& name) {
@@ -1442,7 +1442,7 @@
         auto remaining_time = GetRemainingTime(params.timeout_ms, begin);
         if (remaining_time.count() < 0) return false;
 
-        if (!MapCowImage(partition_name, remaining_time)) {
+        if (!MapCowImage(partition_name, remaining_time).has_value()) {
             LOG(ERROR) << "Could not map cow image for partition: " << partition_name;
             return false;
         }
diff --git a/fs_mgr/libsnapshot/snapshot_test.cpp b/fs_mgr/libsnapshot/snapshot_test.cpp
index a008294..f6a4722 100644
--- a/fs_mgr/libsnapshot/snapshot_test.cpp
+++ b/fs_mgr/libsnapshot/snapshot_test.cpp
@@ -254,12 +254,11 @@
 
     AssertionResult MapCowImage(const std::string& name,
                                 const std::chrono::milliseconds& timeout_ms, std::string* path) {
-        if (!sm->MapCowImage(name, timeout_ms)) {
+        auto cow_image_path = sm->MapCowImage(name, timeout_ms);
+        if (!cow_image_path.has_value()) {
             return AssertionFailure() << "Cannot map cow image " << name;
         }
-        if (!dm_.GetDmDevicePathByName(name + "-cow-img"s, path)) {
-            return AssertionFailure() << "No path for " << name << "-cow-img";
-        }
+        *path = *cow_image_path;
         return AssertionSuccess();
     }
 
diff --git a/init/Android.bp b/init/Android.bp
index ce5b12a..bd2d38c 100644
--- a/init/Android.bp
+++ b/init/Android.bp
@@ -82,7 +82,6 @@
         "libfscrypt",
         "libgsi",
         "libhidl-gen-utils",
-        "libjsoncpp",
         "libkeyutils",
         "liblog",
         "liblogwrap",
@@ -286,13 +285,11 @@
     shared_libs: [
         "libcutils",
         "libhidl-gen-utils",
+        "libhidlmetadata",
         "liblog",
         "libprocessgroup",
         "libprotobuf-cpp-lite",
     ],
-    header_libs: [
-        "libjsoncpp_headers",
-    ],
     srcs: [
         "action.cpp",
         "action_manager.cpp",
diff --git a/init/host_init_verifier.cpp b/init/host_init_verifier.cpp
index b2402b3..522709e 100644
--- a/init/host_init_verifier.cpp
+++ b/init/host_init_verifier.cpp
@@ -30,6 +30,7 @@
 #include <android-base/logging.h>
 #include <android-base/parseint.h>
 #include <android-base/strings.h>
+#include <hidl/metadata.h>
 
 #include "action.h"
 #include "action_manager.h"
@@ -142,28 +143,46 @@
 #include "generated_stub_builtin_function_map.h"
 
 void PrintUsage() {
-    std::cout << "usage: host_init_verifier [-p FILE] -i FILE <init rc file>\n"
+    std::cout << "usage: host_init_verifier [-p FILE] <init rc file>\n"
                  "\n"
                  "Tests an init script for correctness\n"
                  "\n"
                  "-p FILE\tSearch this passwd file for users and groups\n"
-                 "-i FILE\tParse this JSON file for the HIDL interface inheritance hierarchy\n"
               << std::endl;
 }
 
+Result<InterfaceInheritanceHierarchyMap> ReadInterfaceInheritanceHierarchy() {
+    InterfaceInheritanceHierarchyMap result;
+    for (const HidlInterfaceMetadata& iface : HidlInterfaceMetadata::all()) {
+        std::set<FQName> inherited_interfaces;
+        for (const std::string& intf : iface.inherited) {
+            FQName fqname;
+            if (!fqname.setTo(intf)) {
+                return Error() << "Unable to parse interface '" << intf << "'";
+            }
+            inherited_interfaces.insert(fqname);
+        }
+        FQName fqname;
+        if (!fqname.setTo(iface.name)) {
+            return Error() << "Unable to parse interface '" << iface.name << "'";
+        }
+        result[fqname] = inherited_interfaces;
+    }
+
+    return result;
+}
+
 int main(int argc, char** argv) {
     android::base::InitLogging(argv, &android::base::StdioLogger);
     android::base::SetMinimumLogSeverity(android::base::ERROR);
 
-    std::string interface_inheritance_hierarchy_file;
-
     while (true) {
         static const struct option long_options[] = {
                 {"help", no_argument, nullptr, 'h'},
                 {nullptr, 0, nullptr, 0},
         };
 
-        int arg = getopt_long(argc, argv, "p:i:", long_options, nullptr);
+        int arg = getopt_long(argc, argv, "p:", long_options, nullptr);
 
         if (arg == -1) {
             break;
@@ -176,9 +195,6 @@
             case 'p':
                 passwd_files.emplace_back(optarg);
                 break;
-            case 'i':
-                interface_inheritance_hierarchy_file = optarg;
-                break;
             default:
                 std::cerr << "getprop: getopt returned invalid result: " << arg << std::endl;
                 return EXIT_FAILURE;
@@ -188,13 +204,12 @@
     argc -= optind;
     argv += optind;
 
-    if (argc != 1 || interface_inheritance_hierarchy_file.empty()) {
+    if (argc != 1) {
         PrintUsage();
         return EXIT_FAILURE;
     }
 
-    auto interface_inheritance_hierarchy_map =
-            ReadInterfaceInheritanceHierarchy(interface_inheritance_hierarchy_file);
+    auto interface_inheritance_hierarchy_map = ReadInterfaceInheritanceHierarchy();
     if (!interface_inheritance_hierarchy_map) {
         LOG(ERROR) << interface_inheritance_hierarchy_map.error();
         return EXIT_FAILURE;
diff --git a/init/interface_utils.cpp b/init/interface_utils.cpp
index ddbacd7..1b76bba 100644
--- a/init/interface_utils.cpp
+++ b/init/interface_utils.cpp
@@ -21,7 +21,6 @@
 
 #include <android-base/strings.h>
 #include <hidl-util/FqInstance.h>
-#include <json/json.h>
 
 using android::FqInstance;
 using android::FQName;
@@ -42,37 +41,6 @@
 
 }  // namespace
 
-Result<InterfaceInheritanceHierarchyMap> ReadInterfaceInheritanceHierarchy(
-        const std::string& path) {
-    Json::Value root;
-    Json::Reader reader;
-    std::ifstream stream(path);
-    if (!reader.parse(stream, root)) {
-        return Error() << "Failed to read interface inheritance hierarchy file: " << path << "\n"
-                       << reader.getFormattedErrorMessages();
-    }
-
-    InterfaceInheritanceHierarchyMap result;
-    for (const Json::Value& entry : root) {
-        std::set<FQName> inherited_interfaces;
-        for (const Json::Value& intf : entry["inheritedInterfaces"]) {
-            FQName fqname;
-            if (!fqname.setTo(intf.asString())) {
-                return Error() << "Unable to parse interface '" << intf.asString() << "'";
-            }
-            inherited_interfaces.insert(fqname);
-        }
-        std::string intf_string = entry["interface"].asString();
-        FQName fqname;
-        if (!fqname.setTo(intf_string)) {
-            return Error() << "Unable to parse interface '" << intf_string << "'";
-        }
-        result[fqname] = inherited_interfaces;
-    }
-
-    return result;
-}
-
 Result<void> CheckInterfaceInheritanceHierarchy(const std::set<std::string>& instances,
                                                 const InterfaceInheritanceHierarchyMap& hierarchy) {
     std::set<FQName> interface_fqnames;
diff --git a/init/interface_utils.h b/init/interface_utils.h
index bd0c104..4ca377f 100644
--- a/init/interface_utils.h
+++ b/init/interface_utils.h
@@ -29,9 +29,6 @@
 
 using InterfaceInheritanceHierarchyMap = std::map<android::FQName, std::set<android::FQName>>;
 
-// Reads the HIDL interface inheritance hierarchy JSON file at the given path.
-Result<InterfaceInheritanceHierarchyMap> ReadInterfaceInheritanceHierarchy(const std::string& path);
-
 // For the given set of interfaces / interface instances, checks that each
 // interface's hierarchy of inherited interfaces is also included in the given
 // interface set. Uses the provided hierarchy data.
diff --git a/reboot/Android.bp b/reboot/Android.bp
index 805fd9a..cc71723 100644
--- a/reboot/Android.bp
+++ b/reboot/Android.bp
@@ -5,4 +5,5 @@
     srcs: ["reboot.c"],
     shared_libs: ["libcutils"],
     cflags: ["-Werror"],
+    recovery_available: true,
 }
diff --git a/set-verity-state/.clang-format b/set-verity-state/.clang-format
new file mode 120000
index 0000000..fd0645f
--- /dev/null
+++ b/set-verity-state/.clang-format
@@ -0,0 +1 @@
+../.clang-format-2
\ No newline at end of file
diff --git a/set-verity-state/Android.bp b/set-verity-state/Android.bp
new file mode 100644
index 0000000..cd8c8c5
--- /dev/null
+++ b/set-verity-state/Android.bp
@@ -0,0 +1,24 @@
+// Copyright 2019 The Android Open Source Project
+
+cc_binary {
+    name: "set-verity-state",
+    srcs: ["set-verity-state.cpp"],
+    shared_libs: [
+        "libbase",
+        "libcrypto",
+        "libcrypto_utils",
+        "libcutils",
+        "libfec",
+        "libfs_mgr",
+        "liblog",
+    ],
+    static_libs: [
+        "libavb_user",
+    ],
+
+    cflags: ["-Werror"],
+    symlinks: [
+        "enable-verity",
+        "disable-verity",
+    ],
+}
diff --git a/set-verity-state/set-verity-state.cpp b/set-verity-state/set-verity-state.cpp
new file mode 100644
index 0000000..0a26aba
--- /dev/null
+++ b/set-verity-state/set-verity-state.cpp
@@ -0,0 +1,274 @@
+/*
+ * Copyright (C) 2019 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 <errno.h>
+#include <fcntl.h>
+#include <inttypes.h>
+#include <libavb_user/libavb_user.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <sys/mount.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#include <android-base/file.h>
+#include <android-base/logging.h>
+#include <android-base/properties.h>
+#include <android-base/stringprintf.h>
+#include <android-base/unique_fd.h>
+#include <fs_mgr.h>
+#include <fs_mgr_overlayfs.h>
+#include <fstab/fstab.h>
+#include <log/log_properties.h>
+
+#include "fec/io.h"
+
+#ifdef ALLOW_DISABLE_VERITY
+static const bool kAllowDisableVerity = true;
+#else
+static const bool kAllowDisableVerity = false;
+#endif
+
+using android::base::unique_fd;
+
+static void suggest_run_adb_root() {
+  if (getuid() != 0) printf("Maybe run adb root?\n");
+}
+
+static bool make_block_device_writable(const std::string& dev) {
+  unique_fd fd(open(dev.c_str(), O_RDONLY | O_CLOEXEC));
+  if (fd == -1) {
+    return false;
+  }
+
+  int OFF = 0;
+  bool result = (ioctl(fd.get(), BLKROSET, &OFF) != -1);
+  return result;
+}
+
+/* Turn verity on/off */
+static bool set_verity_enabled_state(const char* block_device, const char* mount_point,
+                                     bool enable) {
+  if (!make_block_device_writable(block_device)) {
+    printf("Could not make block device %s writable (%s).\n", block_device, strerror(errno));
+    return false;
+  }
+
+  fec::io fh(block_device, O_RDWR);
+
+  if (!fh) {
+    printf("Could not open block device %s (%s).\n", block_device, strerror(errno));
+    suggest_run_adb_root();
+    return false;
+  }
+
+  fec_verity_metadata metadata;
+
+  if (!fh.get_verity_metadata(metadata)) {
+    printf("Couldn't find verity metadata!\n");
+    return false;
+  }
+
+  if (!enable && metadata.disabled) {
+    printf("Verity already disabled on %s\n", mount_point);
+    return false;
+  }
+
+  if (enable && !metadata.disabled) {
+    printf("Verity already enabled on %s\n", mount_point);
+    return false;
+  }
+
+  if (!fh.set_verity_status(enable)) {
+    printf("Could not set verity %s flag on device %s with error %s\n",
+           enable ? "enabled" : "disabled", block_device, strerror(errno));
+    return false;
+  }
+
+  auto change = false;
+  errno = 0;
+  if (enable ? fs_mgr_overlayfs_teardown(mount_point, &change)
+             : fs_mgr_overlayfs_setup(nullptr, mount_point, &change)) {
+    if (change) {
+      printf("%s overlayfs for %s\n", enable ? "disabling" : "using", mount_point);
+    }
+  } else if (errno) {
+    int expected_errno = enable ? EBUSY : ENOENT;
+    if (errno != expected_errno) {
+      printf("Overlayfs %s for %s failed with error %s\n", enable ? "teardown" : "setup",
+             mount_point, strerror(errno));
+    }
+  }
+  printf("Verity %s on %s\n", enable ? "enabled" : "disabled", mount_point);
+  return true;
+}
+
+/* Helper function to get A/B suffix, if any. If the device isn't
+ * using A/B the empty string is returned. Otherwise either "_a",
+ * "_b", ... is returned.
+ */
+static std::string get_ab_suffix() {
+  return android::base::GetProperty("ro.boot.slot_suffix", "");
+}
+
+static bool is_avb_device_locked() {
+  return android::base::GetProperty("ro.boot.vbmeta.device_state", "") == "locked";
+}
+
+static bool overlayfs_setup(bool enable) {
+  auto change = false;
+  errno = 0;
+  if (enable ? fs_mgr_overlayfs_teardown(nullptr, &change)
+             : fs_mgr_overlayfs_setup(nullptr, nullptr, &change)) {
+    if (change) {
+      printf("%s overlayfs\n", enable ? "disabling" : "using");
+    }
+  } else if (errno) {
+    printf("Overlayfs %s failed with error %s\n", enable ? "teardown" : "setup", strerror(errno));
+    suggest_run_adb_root();
+  }
+  return change;
+}
+
+/* Use AVB to turn verity on/off */
+static bool set_avb_verity_enabled_state(AvbOps* ops, bool enable_verity) {
+  std::string ab_suffix = get_ab_suffix();
+  bool verity_enabled;
+
+  if (is_avb_device_locked()) {
+    printf("Device is locked. Please unlock the device first\n");
+    return false;
+  }
+
+  if (!avb_user_verity_get(ops, ab_suffix.c_str(), &verity_enabled)) {
+    printf("Error getting verity state. Try adb root first?\n");
+    return false;
+  }
+
+  if ((verity_enabled && enable_verity) || (!verity_enabled && !enable_verity)) {
+    printf("verity is already %s\n", verity_enabled ? "enabled" : "disabled");
+    return false;
+  }
+
+  if (!avb_user_verity_set(ops, ab_suffix.c_str(), enable_verity)) {
+    printf("Error setting verity\n");
+    return false;
+  }
+
+  overlayfs_setup(enable_verity);
+  printf("Successfully %s verity\n", enable_verity ? "enabled" : "disabled");
+  return true;
+}
+
+int main(int argc, char* argv[]) {
+  if (argc == 0) {
+    LOG(FATAL) << "set-verity-state called with empty argv";
+  }
+
+  std::optional<bool> enable_opt;
+  std::string procname = android::base::Basename(argv[0]);
+  if (procname == "enable-verity") {
+    enable_opt = true;
+  } else if (procname == "disable-verity") {
+    enable_opt = false;
+  }
+
+  if (!enable_opt.has_value()) {
+    if (argc != 2) {
+      printf("usage: %s [1|0]\n", argv[0]);
+      return 1;
+    }
+
+    if (strcmp(argv[1], "1") == 0) {
+      enable_opt = true;
+    } else if (strcmp(argv[1], "0") == 0) {
+      enable_opt = false;
+    } else {
+      printf("usage: %s [1|0]\n", argv[0]);
+      return 1;
+    }
+  }
+
+  bool enable = enable_opt.value();
+
+  bool any_changed = false;
+
+  // Figure out if we're using VB1.0 or VB2.0 (aka AVB) - by
+  // contract, androidboot.vbmeta.digest is set by the bootloader
+  // when using AVB).
+  bool using_avb = !android::base::GetProperty("ro.boot.vbmeta.digest", "").empty();
+
+  // If using AVB, dm-verity is used on any build so we want it to
+  // be possible to disable/enable on any build (except USER). For
+  // VB1.0 dm-verity is only enabled on certain builds.
+  if (!using_avb) {
+    if (!kAllowDisableVerity) {
+      printf("%s only works for userdebug builds\n", argv[0]);
+    }
+
+    if (!android::base::GetBoolProperty("ro.secure", false)) {
+      overlayfs_setup(enable);
+      printf("verity not enabled - ENG build\n");
+      return 0;
+    }
+  }
+
+  // Should never be possible to disable dm-verity on a USER build
+  // regardless of using AVB or VB1.0.
+  if (!__android_log_is_debuggable()) {
+    printf("verity cannot be disabled/enabled - USER build\n");
+    return 0;
+  }
+
+  if (using_avb) {
+    // Yep, the system is using AVB.
+    AvbOps* ops = avb_ops_user_new();
+    if (ops == nullptr) {
+      printf("Error getting AVB ops\n");
+      return 1;
+    }
+    if (set_avb_verity_enabled_state(ops, enable)) {
+      any_changed = true;
+    }
+    avb_ops_user_free(ops);
+  } else {
+    // Not using AVB - assume VB1.0.
+
+    // read all fstab entries at once from all sources
+    android::fs_mgr::Fstab fstab;
+    if (!android::fs_mgr::ReadDefaultFstab(&fstab)) {
+      printf("Failed to read fstab\n");
+      suggest_run_adb_root();
+      return 0;
+    }
+
+    // Loop through entries looking for ones that verity manages.
+    for (const auto& entry : fstab) {
+      if (entry.fs_mgr_flags.verify) {
+        if (set_verity_enabled_state(entry.blk_device.c_str(), entry.mount_point.c_str(), enable)) {
+          any_changed = true;
+        }
+      }
+    }
+  }
+  if (!any_changed) any_changed = overlayfs_setup(enable);
+
+  if (any_changed) {
+    printf("Now reboot your device for settings to take effect\n");
+  }
+
+  return 0;
+}