mmdevapi: Always use 64-bit registry keys.

dlls/mmdevapi/devenum.c

@@ -143,12 +143,12 @@ static HRESULT MMDevPropStore_OpenPropKey(const GUID *guid, DWORD flow, HKEY *pr
     LONG ret;
     HKEY key;
     StringFromGUID2(guid, buffer, 39);
-    if ((ret = RegOpenKeyExW(flow == eRender ? key_render : key_capture, buffer, 0, KEY_READ|KEY_WRITE, &key)) != ERROR_SUCCESS)
+    if ((ret = RegOpenKeyExW(flow == eRender ? key_render : key_capture, buffer, 0, KEY_READ|KEY_WRITE|KEY_WOW64_64KEY, &key)) != ERROR_SUCCESS)
     {
         WARN("Opening key %s failed with %u\n", debugstr_w(buffer), ret);
         return E_FAIL;
     }
-    ret = RegOpenKeyExW(key, reg_properties, 0, KEY_READ|KEY_WRITE, propkey);
+    ret = RegOpenKeyExW(key, reg_properties, 0, KEY_READ|KEY_WRITE|KEY_WOW64_64KEY, propkey);
     RegCloseKey(key);
     if (ret != ERROR_SUCCESS)
     {
@@ -345,11 +345,11 @@ static MMDevice *MMDevice_Create(WCHAR *name, GUID *id, EDataFlow flow, DWORD st
     else
         root = key_capture;
 
-    if (RegCreateKeyExW(root, guidstr, 0, NULL, 0, KEY_WRITE|KEY_READ, NULL, &key, NULL) == ERROR_SUCCESS)
+    if (RegCreateKeyExW(root, guidstr, 0, NULL, 0, KEY_WRITE|KEY_READ|KEY_WOW64_64KEY, NULL, &key, NULL) == ERROR_SUCCESS)
     {
         HKEY keyprop;
         RegSetValueExW(key, reg_devicestate, 0, REG_DWORD, (const BYTE*)&state, sizeof(DWORD));
-        if (!RegCreateKeyExW(key, reg_properties, 0, NULL, 0, KEY_WRITE|KEY_READ, NULL, &keyprop, NULL))
+        if (!RegCreateKeyExW(key, reg_properties, 0, NULL, 0, KEY_WRITE|KEY_READ|KEY_WOW64_64KEY, NULL, &keyprop, NULL))
         {
             PROPVARIANT pv;
 
@@ -406,11 +406,11 @@ static HRESULT load_devices_from_reg(void)
     LONG ret;
     DWORD curflow;
 
-    ret = RegCreateKeyExW(HKEY_LOCAL_MACHINE, software_mmdevapi, 0, NULL, 0, KEY_WRITE|KEY_READ, NULL, &root, NULL);
+    ret = RegCreateKeyExW(HKEY_LOCAL_MACHINE, software_mmdevapi, 0, NULL, 0, KEY_WRITE|KEY_READ|KEY_WOW64_64KEY, NULL, &root, NULL);
     if (ret == ERROR_SUCCESS)
-        ret = RegCreateKeyExW(root, reg_capture, 0, NULL, 0, KEY_READ|KEY_WRITE, NULL, &key_capture, NULL);
+        ret = RegCreateKeyExW(root, reg_capture, 0, NULL, 0, KEY_READ|KEY_WRITE|KEY_WOW64_64KEY, NULL, &key_capture, NULL);
     if (ret == ERROR_SUCCESS)
-        ret = RegCreateKeyExW(root, reg_render, 0, NULL, 0, KEY_READ|KEY_WRITE, NULL, &key_render, NULL);
+        ret = RegCreateKeyExW(root, reg_render, 0, NULL, 0, KEY_READ|KEY_WRITE|KEY_WOW64_64KEY, NULL, &key_render, NULL);
     RegCloseKey(root);
     cur = key_capture;
     curflow = eCapture;

dlls/mmdevapi/tests/propstore.c

@@ -30,6 +30,19 @@
 #include "mmdeviceapi.h"
 #include "devpkey.h"
 
+static BOOL (WINAPI *pIsWow64Process)(HANDLE, BOOL *);
+
+static const WCHAR software_renderW[] =
+    { 'S','o','f','t','w','a','r','e','\\',
+      'M','i','c','r','o','s','o','f','t','\\',
+      'W','i','n','d','o','w','s','\\',
+      'C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
+      'M','M','D','e','v','i','c','e','s','\\',
+      'A','u','d','i','o','\\',
+      'R','e','n','d','e','r',0 };
+static const WCHAR propertiesW[] = {'P','r','o','p','e','r','t','i','e','s',0};
+
+
 static void test_propertystore(IPropertyStore *store)
 {
     HRESULT hr;
@@ -109,12 +122,86 @@ static void test_getat(IPropertyStore *store)
     ok(found_desc == TRUE, "DEVPKEY_Device_DeviceDesc not found\n");
 }
 
+static void test_setvalue_on_wow64(IPropertyStore *store)
+{
+    PROPVARIANT pv;
+    HRESULT hr;
+    LONG ret;
+    WCHAR *guidW;
+    HKEY root, props, devkey;
+    DWORD type, regval, size;
+
+    static const PROPERTYKEY PKEY_Bogus = {
+        {0x1da5d803, 0xd492, 0x4edd, {0x8c, 0x23, 0xe0, 0xc0, 0xff, 0xee, 0x7f, 0x00}}, 0x7f
+    };
+    static const WCHAR bogusW[] = {'{','1','D','A','5','D','8','0','3','-','D','4','9','2','-','4','E','D','D','-','8','C','2','3','-','E','0','C','0','F','F','E','E','7','F','0','0','}',',','1','2','7',0};
+
+    PropVariantInit(&pv);
+
+    pv.vt = VT_EMPTY;
+    hr = IPropertyStore_GetValue(store, &PKEY_AudioEndpoint_GUID, &pv);
+    ok(hr == S_OK, "Failed to get Endpoint GUID: %08x\n", hr);
+
+    guidW = pv.u.pwszVal;
+
+    pv.vt = VT_UI4;
+    pv.u.ulVal = 0xAB;
+
+    hr = IPropertyStore_SetValue(store, &PKEY_Bogus, &pv);
+    ok(hr == S_OK || hr == E_ACCESSDENIED, "SetValue failed: %08x\n", hr);
+    if (hr != S_OK)
+    {
+        win_skip("Missing permission to write to registry\n");
+        return;
+    }
+
+    pv.u.ulVal = 0x00;
+
+    hr = IPropertyStore_GetValue(store, &PKEY_Bogus, &pv);
+    ok(hr == S_OK, "GetValue failed: %08x\n", hr);
+    ok(pv.u.ulVal == 0xAB, "Got wrong value: 0x%x\n", pv.u.ulVal);
+
+    /* should find the key in 64-bit view */
+    ret = RegOpenKeyExW(HKEY_LOCAL_MACHINE, software_renderW, 0, KEY_READ|KEY_WOW64_64KEY, &root);
+    ok(ret == ERROR_SUCCESS, "Couldn't open mmdevices Render key: %u\n", ret);
+
+    ret = RegOpenKeyExW(root, guidW, 0, KEY_READ|KEY_WOW64_64KEY, &devkey);
+    ok(ret == ERROR_SUCCESS, "Couldn't open mmdevice guid key: %u\n", ret);
+
+    ret = RegOpenKeyExW(devkey, propertiesW, 0, KEY_READ|KEY_WOW64_64KEY, &props);
+    ok(ret == ERROR_SUCCESS, "Couldn't open mmdevice property key: %u\n", ret);
+
+    /* Note: the registry key exists even without calling IPropStore::Commit */
+    size = sizeof(regval);
+    ret = RegGetValueW(props, NULL, bogusW, RRF_RT_DWORD, &type, &regval, &size);
+    ok(ret == ERROR_SUCCESS, "Couldn't get bogus propertykey value: %u\n", ret);
+    ok(type == REG_DWORD, "Got wrong value type: %u\n", type);
+    ok(regval == 0xAB, "Got wrong value: 0x%x\n", regval);
+
+    RegCloseKey(props);
+    RegCloseKey(devkey);
+    RegCloseKey(root);
+
+    CoTaskMemFree(guidW);
+
+    /* should NOT find the key in 32-bit view */
+    ret = RegOpenKeyExW(HKEY_LOCAL_MACHINE, software_renderW, 0, KEY_READ, &root);
+    ok(ret == ERROR_FILE_NOT_FOUND, "Wrong error when opening mmdevices Render key: %u\n", ret);
+}
+
 START_TEST(propstore)
 {
     HRESULT hr;
     IMMDeviceEnumerator *mme = NULL;
     IMMDevice *dev = NULL;
     IPropertyStore *store;
+    BOOL is_wow64 = FALSE;
+    HMODULE hk32 = GetModuleHandleA("kernel32.dll");
+
+    pIsWow64Process = (void *)GetProcAddress(hk32, "IsWow64Process");
+
+    if (pIsWow64Process)
+        pIsWow64Process(GetCurrentProcess(), &is_wow64);
 
     CoInitializeEx(NULL, COINIT_MULTITHREADED);
     hr = CoCreateInstance(&CLSID_MMDeviceEnumerator, NULL, CLSCTX_INPROC_SERVER, &IID_IMMDeviceEnumerator, (void**)&mme);
@@ -149,13 +236,17 @@ START_TEST(propstore)
     ok(hr == E_POINTER, "Wrong hr returned: %08x\n", hr);
 
     store = NULL;
-    hr = IMMDevice_OpenPropertyStore(dev, STGM_READ, &store);
+    hr = IMMDevice_OpenPropertyStore(dev, STGM_READWRITE, &store);
+    if(hr == E_ACCESSDENIED)
+        hr = IMMDevice_OpenPropertyStore(dev, STGM_READ, &store);
     ok(hr == S_OK, "Opening valid store returned %08x\n", hr);
     if (store)
     {
         test_propertystore(store);
         test_deviceinterface(store);
         test_getat(store);
+        if (is_wow64)
+            test_setvalue_on_wow64(store);
         IPropertyStore_Release(store);
     }
     IMMDevice_Release(dev);