--- a/packages/modules/adb/daemon/services.cpp
+++ b/packages/modules/adb/daemon/services.cpp
@@ -273,6 +273,22 @@

 unique_fd daemon_service_to_fd(std::string_view name, atransport* transport) {
     ADB_LOG(Service) << "transport " << transport->serial_name() << " opening service " << name;
+
+#if !defined(__ANDROID__)
+    // AGNOS is Linux: use Linux tools instead of Android's property service.
+    if (name.starts_with("root:")) {
+        return create_service_thread("root", [](unique_fd fd) {
+            WriteFdExactly(fd.get(), "adbd is already running as root\n");
+        });
+    } else if (android::base::ConsumePrefix(&name, "reboot:")) {
+        std::string cmd = "/sbin/reboot";
+        if (!name.empty()) cmd += " -- " + escape_arg(std::string(name));
+        return StartSubprocess(cmd, nullptr, SubprocessType::kRaw, SubprocessProtocol::kNone);
+    } else if (name.starts_with("remount:")) {
+        return StartSubprocess("/bin/mount -o remount,rw /", nullptr, SubprocessType::kRaw,
+                               SubprocessProtocol::kNone);
+    }
+#endif

 #if defined(__ANDROID__) && !defined(__ANDROID_RECOVERY__)
     if (name.starts_with("abb:") || name.starts_with("abb_exec:")) {
--- a/packages/modules/adb/transport.cpp
+++ b/packages/modules/adb/transport.cpp
@@ -1300,7 +1300,9 @@
             kFeatureAbb,
             kFeatureFixedPushSymlinkTimestamp,
             kFeatureAbbExec,
+#if ADB_HOST || defined(__ANDROID__)
             kFeatureRemountShell,
+#endif
             kFeatureTrackApp,
             kFeatureSendRecv2,
             kFeatureSendRecv2Brotli,
--- a/packages/modules/adb/daemon/main.cpp
+++ b/packages/modules/adb/daemon/main.cpp
@@ -310,7 +310,7 @@
     D("adbd_main(): post init_jdwp()");

 #if defined(__linux__)
-    sd_notify(1, "READY=1");
+    if (!is_usb) sd_notify(1, "READY=1");
 #endif

     D("Event loop starting");
--- a/packages/modules/adb/daemon/usb_ffs.cpp
+++ b/packages/modules/adb/daemon/usb_ffs.cpp
@@ -23,6 +23,11 @@
 #include <linux/usb/ch9.h>
 #include <linux/usb/functionfs.h>

+#if defined(__linux__) && !defined(__ANDROID__)
+#include <systemd/sd-daemon.h>
+#endif
+
+#include <android-base/file.h>
 #include <android-base/logging.h>
 #include <android-base/properties.h>
 #include <android-base/unique_fd.h>
@@ -317,5 +322,14 @@
     *out_control = std::move(control);
     *out_bulk_in = std::move(bulk_in);
     *out_bulk_out = std::move(bulk_out);
+#if defined(__linux__) && !defined(__ANDROID__)
+    // This kernel unbinds the configfs gadget when ep0 closes. Rebind whenever
+    // descriptors are recreated, including after a USB disconnect.
+    if (!android::base::WriteStringToFile("a600000.dwc3", "/config/usb_gadget/g1/UDC")) {
+        PLOG(ERROR) << "failed to bind AGNOS USB gadget";
+        return false;
+    }
+    sd_notify(1, "READY=1");
+#endif
     return true;
 }