Merge "Display offsets for dex frames."
diff --git a/adb/daemon/usb.cpp b/adb/daemon/usb.cpp
index 96ee6b2..1abae87 100644
--- a/adb/daemon/usb.cpp
+++ b/adb/daemon/usb.cpp
@@ -370,6 +370,38 @@
                         bound = false;
                         running = false;
                         break;
+
+                    case FUNCTIONFS_SETUP: {
+                        LOG(INFO) << "received FUNCTIONFS_SETUP control transfer: bRequestType = "
+                                  << static_cast<int>(event.u.setup.bRequestType)
+                                  << ", bRequest = " << static_cast<int>(event.u.setup.bRequest)
+                                  << ", wValue = " << static_cast<int>(event.u.setup.wValue)
+                                  << ", wIndex = " << static_cast<int>(event.u.setup.wIndex)
+                                  << ", wLength = " << static_cast<int>(event.u.setup.wLength);
+
+                        if ((event.u.setup.bRequestType & USB_DIR_IN)) {
+                            LOG(INFO) << "acking device-to-host control transfer";
+                            ssize_t rc = adb_write(control_fd_.get(), "", 0);
+                            if (rc != 0) {
+                                PLOG(ERROR) << "failed to write empty packet to host";
+                                break;
+                            }
+                        } else {
+                            std::string buf;
+                            buf.resize(event.u.setup.wLength + 1);
+
+                            ssize_t rc = adb_read(control_fd_.get(), buf.data(), buf.size());
+                            if (rc != event.u.setup.wLength) {
+                                LOG(ERROR)
+                                        << "read " << rc
+                                        << " bytes when trying to read control request, expected "
+                                        << event.u.setup.wLength;
+                            }
+
+                            LOG(INFO) << "control request contents: " << buf;
+                            break;
+                        }
+                    }
                 }
             }
 
diff --git a/adb/daemon/usb_ffs.cpp b/adb/daemon/usb_ffs.cpp
index 07b4ba8..a64ce40 100644
--- a/adb/daemon/usb_ffs.cpp
+++ b/adb/daemon/usb_ffs.cpp
@@ -37,9 +37,12 @@
 // Number of buffers needed to fit MAX_PAYLOAD, with an extra for ZLPs.
 #define USB_FFS_NUM_BUFS ((4 * MAX_PAYLOAD / USB_FFS_BULK_SIZE) + 1)
 
+#define USB_EXT_PROP_UNICODE 1
+
 #define cpu_to_le16(x) htole16(x)
 #define cpu_to_le32(x) htole32(x)
 
+// clang-format off
 struct func_desc {
     struct usb_interface_descriptor intf;
     struct usb_endpoint_descriptor_no_audio source;
@@ -64,6 +67,34 @@
     struct func_desc fs_descs, hs_descs;
 } __attribute__((packed));
 
+template <size_t PropertyNameLength, size_t PropertyDataLength>
+struct usb_os_desc_ext_prop {
+    uint32_t dwSize = sizeof(*this);
+    uint32_t dwPropertyDataType = cpu_to_le32(USB_EXT_PROP_UNICODE);
+
+    // Property name and value are transmitted as UTF-16, but the kernel only
+    // accepts ASCII values and performs the conversion for us.
+    uint16_t wPropertyNameLength = cpu_to_le16(PropertyNameLength);
+    char bPropertyName[PropertyNameLength];
+
+    uint32_t dwPropertyDataLength = cpu_to_le32(PropertyDataLength);
+    char bProperty[PropertyDataLength];
+} __attribute__((packed));
+
+using usb_os_desc_guid_t = usb_os_desc_ext_prop<20, 39>;
+usb_os_desc_guid_t os_desc_guid = {
+    .bPropertyName = "DeviceInterfaceGUID",
+    .bProperty = "{64379D6C-D531-4BED-BBEC-5A16FC07D6BC}",
+};
+
+struct usb_ext_prop_values {
+    usb_os_desc_guid_t guid;
+} __attribute__((packed));
+
+usb_ext_prop_values os_prop_values = {
+    .guid = os_desc_guid,
+};
+
 struct desc_v2 {
     struct usb_functionfs_descs_head_v2 header;
     // The rest of the structure depends on the flags in the header.
@@ -75,9 +106,10 @@
     struct ss_func_desc ss_descs;
     struct usb_os_desc_header os_header;
     struct usb_ext_compat_desc os_desc;
+    struct usb_os_desc_header os_prop_header;
+    struct usb_ext_prop_values os_prop_values;
 } __attribute__((packed));
 
-// clang-format off
 static struct func_desc fs_descriptors = {
     .intf = {
         .bLength = sizeof(fs_descriptors.intf),
@@ -172,13 +204,13 @@
 struct usb_ext_compat_desc os_desc_compat = {
     .bFirstInterfaceNumber = 0,
     .Reserved1 = cpu_to_le32(1),
-    .CompatibleID = {0},
+    .CompatibleID = { 'W', 'I', 'N', 'U', 'S', 'B', '\0', '\0'},
     .SubCompatibleID = {0},
     .Reserved2 = {0},
 };
 
 static struct usb_os_desc_header os_desc_header = {
-    .interface = cpu_to_le32(1),
+    .interface = cpu_to_le32(0),
     .dwLength = cpu_to_le32(sizeof(os_desc_header) + sizeof(os_desc_compat)),
     .bcdVersion = cpu_to_le32(1),
     .wIndex = cpu_to_le32(4),
@@ -186,6 +218,14 @@
     .Reserved = cpu_to_le32(0),
 };
 
+static struct usb_os_desc_header os_prop_header = {
+    .interface = cpu_to_le32(0),
+    .dwLength = cpu_to_le32(sizeof(os_desc_header) + sizeof(os_prop_values)),
+    .bcdVersion = cpu_to_le32(1),
+    .wIndex = cpu_to_le32(5),
+    .wCount = cpu_to_le16(1),
+};
+
 #define STR_INTERFACE_ "ADB Interface"
 
 static const struct {
@@ -221,12 +261,14 @@
     v2_descriptor.fs_count = 3;
     v2_descriptor.hs_count = 3;
     v2_descriptor.ss_count = 5;
-    v2_descriptor.os_count = 1;
+    v2_descriptor.os_count = 2;
     v2_descriptor.fs_descs = fs_descriptors;
     v2_descriptor.hs_descs = hs_descriptors;
     v2_descriptor.ss_descs = ss_descriptors;
     v2_descriptor.os_header = os_desc_header;
     v2_descriptor.os_desc = os_desc_compat;
+    v2_descriptor.os_prop_header = os_prop_header;
+    v2_descriptor.os_prop_values = os_prop_values;
 
     if (out_control->get() < 0) {  // might have already done this before
         LOG(INFO) << "opening control endpoint " << USB_FFS_ADB_EP0;
@@ -257,6 +299,7 @@
         }
         // Signal only when writing the descriptors to ffs
         android::base::SetProperty("sys.usb.ffs.ready", "1");
+        *out_control = std::move(control);
     }
 
     bulk_out.reset(adb_open(USB_FFS_ADB_OUT, O_RDONLY));
@@ -271,7 +314,6 @@
         return false;
     }
 
-    *out_control = std::move(control);
     *out_bulk_in = std::move(bulk_in);
     *out_bulk_out = std::move(bulk_out);
     return true;