diff --git a/Android.mk b/Android.mk
index d17b063..112bc80 100644
--- a/Android.mk
+++ b/Android.mk
@@ -363,6 +363,7 @@
 LOCAL_STRIP_MODULE := keep_symbols
 LOCAL_STATIC_LIBRARIES := \
     libadbd \
+    libavb_user \
     libbase \
     libbootloader_message \
     libfs_mgr \
diff --git a/adb_auth_host.cpp b/adb_auth_host.cpp
index c3f1fe0..365bf77 100644
--- a/adb_auth_host.cpp
+++ b/adb_auth_host.cpp
@@ -82,16 +82,17 @@
         return false;
     }
 
-    size_t base64_key_length;
-    if (!EVP_EncodedLength(&base64_key_length, sizeof(binary_key_data))) {
+    size_t expected_length;
+    if (!EVP_EncodedLength(&expected_length, sizeof(binary_key_data))) {
         LOG(ERROR) << "Public key too large to base64 encode";
         return false;
     }
 
     std::string content;
-    content.resize(base64_key_length);
-    base64_key_length = EVP_EncodeBlock(reinterpret_cast<uint8_t*>(&content[0]), binary_key_data,
-                                        sizeof(binary_key_data));
+    content.resize(expected_length);
+    size_t actual_length = EVP_EncodeBlock(reinterpret_cast<uint8_t*>(&content[0]), binary_key_data,
+                                           sizeof(binary_key_data));
+    content.resize(actual_length);
 
     content += get_user_info();
 
diff --git a/commandline.cpp b/commandline.cpp
index 1d3d081..a9b1540 100644
--- a/commandline.cpp
+++ b/commandline.cpp
@@ -68,20 +68,17 @@
 static int install_app_legacy(TransportType t, const char* serial, int argc, const char** argv);
 static int uninstall_app_legacy(TransportType t, const char* serial, int argc, const char** argv);
 
-static auto& gProductOutPath = *new std::string();
 extern int gListenAll;
 
 DefaultStandardStreamsCallback DEFAULT_STANDARD_STREAMS_CALLBACK(nullptr, nullptr);
 
-static std::string product_file(const char *extra) {
-    if (gProductOutPath.empty()) {
-        fprintf(stderr, "adb: Product directory not specified; "
-                "use -p or define ANDROID_PRODUCT_OUT\n");
+static std::string product_file(const char* file) {
+    const char* ANDROID_PRODUCT_OUT = getenv("ANDROID_PRODUCT_OUT");
+    if (ANDROID_PRODUCT_OUT == nullptr) {
+        fprintf(stderr, "adb: product directory not specified; set $ANDROID_PRODUCT_OUT\n");
         exit(1);
     }
-
-    return android::base::StringPrintf("%s%s%s",
-                                       gProductOutPath.c_str(), OS_PATH_SEPARATOR_STR, extra);
+    return android::base::StringPrintf("%s%s%s", ANDROID_PRODUCT_OUT, OS_PATH_SEPARATOR_STR, file);
 }
 
 static void help() {
@@ -92,11 +89,7 @@
         " -a         listen on all network interfaces, not just localhost\n"
         " -d         use USB device (error if multiple devices connected)\n"
         " -e         use TCP/IP device (error if multiple TCP/IP devices available)\n"
-        " -s SERIAL\n"
-        "     use device with given serial number (overrides $ANDROID_SERIAL)\n"
-        " -p PRODUCT\n"
-        "     name or path ('angler'/'out/target/product/angler');\n"
-        "     default $ANDROID_PRODUCT_OUT\n"
+        " -s SERIAL  use device with given serial (overrides $ANDROID_SERIAL)\n"
         " -H         name of adb server host [default=localhost]\n"
         " -P         port of adb server [default=5037]\n"
         " -L SOCKET  listen on given socket for adb server [default=tcp:localhost:5037]\n"
@@ -138,9 +131,8 @@
         " pull [-a] REMOTE... LOCAL\n"
         "     copy files/dirs from device\n"
         "     -a: preserve file timestamp and mode\n"
-        " sync [DIR]\n"
-        "     copy all changed files to device; if DIR is \"system\", \"vendor\", \"oem\",\n"
-        "     or \"data\", only sync that partition (default all)\n"
+        " sync [system|vendor|oem|data|all]\n"
+        "     sync a local build from $ANDROID_PRODUCT_OUT to the device (default all)\n"
         "     -l: list but don't copy\n"
         "\n"
         "shell:\n"
@@ -1241,66 +1233,6 @@
     return 0;
 }
 
-/* <hint> may be:
- * - A simple product name
- *   e.g., "sooner"
- * - A relative path from the CWD to the ANDROID_PRODUCT_OUT dir
- *   e.g., "out/target/product/sooner"
- * - An absolute path to the PRODUCT_OUT dir
- *   e.g., "/src/device/out/target/product/sooner"
- *
- * Given <hint>, try to construct an absolute path to the
- * ANDROID_PRODUCT_OUT dir.
- */
-static std::string find_product_out_path(const std::string& hint) {
-    if (hint.empty()) {
-        return "";
-    }
-
-    // If it's already absolute, don't bother doing any work.
-    if (adb_is_absolute_host_path(hint.c_str())) {
-        return hint;
-    }
-
-    // If any of the OS_PATH_SEPARATORS is found, assume it's a relative path;
-    // make it absolute.
-    // NOLINT: Do not complain if OS_PATH_SEPARATORS has only one character.
-    if (hint.find_first_of(OS_PATH_SEPARATORS) != std::string::npos) {  // NOLINT
-        std::string cwd;
-        if (!getcwd(&cwd)) {
-            perror("adb: getcwd failed");
-            return "";
-        }
-        return android::base::StringPrintf("%s%c%s", cwd.c_str(), OS_PATH_SEPARATOR, hint.c_str());
-    }
-
-    // It's a string without any slashes.  Try to do something with it.
-    //
-    // Try to find the root of the build tree, and build a PRODUCT_OUT
-    // path from there.
-    char* top = getenv("ANDROID_BUILD_TOP");
-    if (top == nullptr) {
-        fprintf(stderr, "adb: ANDROID_BUILD_TOP not set!\n");
-        return "";
-    }
-
-    std::string path = top;
-    path += OS_PATH_SEPARATOR_STR;
-    path += "out";
-    path += OS_PATH_SEPARATOR_STR;
-    path += "target";
-    path += OS_PATH_SEPARATOR_STR;
-    path += "product";
-    path += OS_PATH_SEPARATOR_STR;
-    path += hint;
-    if (!directory_exists(path)) {
-        fprintf(stderr, "adb: Couldn't find a product dir based on -p %s; "
-                        "\"%s\" doesn't exist\n", hint.c_str(), path.c_str());
-        return "";
-    }
-    return path;
-}
-
 static void parse_push_pull_args(const char** arg, int narg,
                                  std::vector<const char*>* srcs,
                                  const char** dst, bool* copy_attrs) {
@@ -1391,17 +1323,6 @@
     signal(SIGPIPE, SIG_IGN);
 #endif
 
-    // If defined, this should be an absolute path to
-    // the directory containing all of the various system images
-    // for a particular product.  If not defined, and the adb
-    // command requires this information, then the user must
-    // specify the path using "-p".
-    char* ANDROID_PRODUCT_OUT = getenv("ANDROID_PRODUCT_OUT");
-    if (ANDROID_PRODUCT_OUT != nullptr) {
-        gProductOutPath = ANDROID_PRODUCT_OUT;
-    }
-    // TODO: also try TARGET_PRODUCT/TARGET_DEVICE as a hint
-
     const char* server_host_str = nullptr;
     const char* server_port_str = nullptr;
     const char* server_socket_str = nullptr;
@@ -1427,21 +1348,6 @@
                 fprintf(stderr, "adb: invalid reply fd \"%s\"\n", reply_fd_str);
                 return 1;
             }
-        } else if (!strncmp(argv[0], "-p", 2)) {
-            const char* product = nullptr;
-            if (argv[0][2] == '\0') {
-                if (argc < 2) return syntax_error("-p requires an argument");
-                product = argv[1];
-                argc--;
-                argv++;
-            } else {
-                product = argv[0] + 2;
-            }
-            gProductOutPath = find_product_out_path(product);
-            if (gProductOutPath.empty()) {
-                fprintf(stderr, "adb: could not resolve \"-p %s\"\n", product);
-                return 1;
-            }
         } else if (argv[0][0]=='-' && argv[0][1]=='s') {
             if (isdigit(argv[0][2])) {
                 serial = argv[0] + 2;
@@ -1820,6 +1726,8 @@
             return syntax_error("adb sync [-l] [PARTITION]");
         }
 
+        if (src == "all") src = "";
+
         if (src != "" &&
             src != "system" && src != "data" && src != "vendor" && src != "oem") {
             return syntax_error("don't know how to sync %s partition", src.c_str());
diff --git a/set_verity_enable_state_service.cpp b/set_verity_enable_state_service.cpp
index d4dd256..b2b1c18 100644
--- a/set_verity_enable_state_service.cpp
+++ b/set_verity_enable_state_service.cpp
@@ -20,6 +20,7 @@
 
 #include <fcntl.h>
 #include <inttypes.h>
+#include <libavb_user/libavb_user.h>
 #include <stdarg.h>
 #include <stdio.h>
 #include <sys/stat.h>
@@ -45,13 +46,12 @@
 #endif
 
 /* Turn verity on/off */
-static int set_verity_enabled_state(int fd, const char *block_device,
-                                    const char* mount_point, bool enable)
-{
+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 -1;
+        return false;
     }
 
     fec::io fh(block_device, O_RDWR);
@@ -59,39 +59,84 @@
     if (!fh) {
         WriteFdFmt(fd, "Could not open block device %s (%s).\n", block_device, strerror(errno));
         WriteFdFmt(fd, "Maybe run adb root?\n");
-        return -1;
+        return false;
     }
 
     fec_verity_metadata metadata;
 
     if (!fh.get_verity_metadata(metadata)) {
         WriteFdFmt(fd, "Couldn't find verity metadata!\n");
-        return -1;
+        return false;
     }
 
     if (!enable && metadata.disabled) {
         WriteFdFmt(fd, "Verity already disabled on %s\n", mount_point);
-        return -1;
+        return false;
     }
 
     if (enable && !metadata.disabled) {
         WriteFdFmt(fd, "Verity already enabled on %s\n", mount_point);
-        return -1;
+        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 -1;
+        return false;
     }
 
     WriteFdFmt(fd, "Verity %s on %s\n", enable ? "enabled" : "disabled", mount_point);
-    return 0;
+    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.
+ *
+ * Note that since sometime in O androidboot.slot_suffix is deprecated
+ * and androidboot.slot should be used instead. Since bootloaders may
+ * be out of sync with the OS, we check both and for extra safety
+ * prepend a leading underscore if there isn't one already.
+ */
+static std::string get_ab_suffix() {
+    std::string ab_suffix = android::base::GetProperty("ro.boot.slot_suffix", "");
+    if (ab_suffix == "") {
+        ab_suffix = android::base::GetProperty("ro.boot.slot", "");
+    }
+    if (ab_suffix.size() > 0 && ab_suffix[0] != '_') {
+        ab_suffix = std::string("_") + ab_suffix;
+    }
+    return ab_suffix;
+}
+
+/* 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 (!avb_user_verity_get(ops, ab_suffix.c_str(), &verity_enabled)) {
+        WriteFdFmt(fd, "Error getting verity state\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)) {
+        WriteFdFmt(fd, "Error setting verity\n");
+        return false;
+    }
+
+    WriteFdFmt(fd, "Successfully %s verity\n", enable_verity ? "enabled" : "disabled");
+    return true;
 }
 
 void set_verity_enabled_state_service(int fd, void* cookie) {
     unique_fd closer(fd);
+    bool any_changed = false;
 
     bool enable = (cookie != NULL);
     if (!kAllowDisableVerity) {
@@ -108,21 +153,37 @@
         return;
     }
 
-    // read all fstab entries at once from all sources
-    fstab = fs_mgr_read_fstab_default();
-    if (!fstab) {
-        WriteFdFmt(fd, "Failed to read fstab\nMaybe run adb root?\n");
-        return;
-    }
+    // Figure out if we're using VB1.0 or VB2.0 (aka AVB).
+    std::string vbmeta_hash = android::base::GetProperty("ro.boot.vbmeta.digest", "");
+    if (vbmeta_hash != "") {
+        // Yep, the system is using AVB (by contract, androidboot.vbmeta.hash is
+        // set by the bootloader when using AVB).
+        AvbOps* ops = avb_ops_user_new();
+        if (ops == nullptr) {
+            WriteFdFmt(fd, "Error getting AVB ops\n");
+            return;
+        }
+        if (set_avb_verity_enabled_state(fd, ops, enable)) {
+            any_changed = true;
+        }
+        avb_ops_user_free(ops);
+    } else {
+        // Not using AVB - assume VB1.0.
 
-    // Loop through entries looking for ones that vold manages.
-    bool any_changed = false;
-    for (int i = 0; i < fstab->num_entries; i++) {
-        if (fs_mgr_is_verified(&fstab->recs[i])) {
-            if (!set_verity_enabled_state(fd, fstab->recs[i].blk_device,
-                                          fstab->recs[i].mount_point,
-                                          enable)) {
-                any_changed = true;
+        // read all fstab entries at once from all sources
+        fstab = fs_mgr_read_fstab_default();
+        if (!fstab) {
+            WriteFdFmt(fd, "Failed to read fstab\nMaybe run adb root?\n");
+            return;
+        }
+
+        // Loop through entries looking for ones that vold manages.
+        for (int i = 0; i < fstab->num_entries; i++) {
+            if (fs_mgr_is_verified(&fstab->recs[i])) {
+                if (set_verity_enabled_state(fd, fstab->recs[i].blk_device,
+                                             fstab->recs[i].mount_point, enable)) {
+                    any_changed = true;
+                }
             }
         }
     }