Aric Stewart : winebus.sys: IOCTL_HID_GET_DEVICE_DESCRIPTOR for iohid.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 7221693538d1dfa814cf5cefd22d49f5efc8527d
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=7221693538d1dfa814cf5cefd2...

Author: Aric Stewart <aric(a)codeweavers.com>
Date:   Mon Nov  7 13:42:31 2016 -0600

winebus.sys: IOCTL_HID_GET_DEVICE_DESCRIPTOR for iohid.

Signed-off-by: Aric Stewart <aric(a)codeweavers.com>
Signed-off-by: Ken Thomases <ken(a)codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard(a)winehq.org>

---

 dlls/winebus.sys/bus_iohid.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/dlls/winebus.sys/bus_iohid.c b/dlls/winebus.sys/bus_iohid.c
index 76db0a2..50b5d76 100644
--- a/dlls/winebus.sys/bus_iohid.c
+++ b/dlls/winebus.sys/bus_iohid.c
@@ -140,7 +140,18 @@ static int compare_platform_device(DEVICE_OBJECT *device, void *platform_dev)
 
 static NTSTATUS get_reportdescriptor(DEVICE_OBJECT *device, BYTE *buffer, DWORD length, DWORD *out_length)
 {
-    return STATUS_NOT_IMPLEMENTED;
+    struct platform_private *private = impl_from_DEVICE_OBJECT(device);
+    CFDataRef data = IOHIDDeviceGetProperty(private->device, CFSTR(kIOHIDReportDescriptorKey));
+    int data_length = CFDataGetLength(data);
+    const UInt8 *ptr;
+
+    *out_length = data_length;
+    if (length < data_length)
+        return STATUS_BUFFER_TOO_SMALL;
+
+    ptr = CFDataGetBytePtr(data);
+    memcpy(buffer, ptr, data_length);
+    return STATUS_SUCCESS;
 }
 
 static NTSTATUS get_string(DEVICE_OBJECT *device, DWORD index, WCHAR *buffer, DWORD length)