Add a new CLSID for UnixDosFolder, which is identical to UnixFolder,

dlls/shell32/folders.c

@@ -264,7 +264,8 @@ static HRESULT WINAPI IExtractIconW_fnGetIconLocation(
                 *piIndex = -IDI_SHELL_FOLDER;
             else if(IsEqualGUID(riid, &CLSID_NetworkPlaces))
                 *piIndex = -IDI_SHELL_MY_NETWORK_PLACES;
-            else if(IsEqualGUID(riid, &CLSID_UnixFolder))
+            else if(IsEqualGUID(riid, &CLSID_UnixFolder) ||
+                    IsEqualGUID(riid, &CLSID_UnixDosFolder))
                 *piIndex = -IDI_SHELL_DRIVE;
             else
                 *piIndex = -IDI_SHELL_FOLDER;

dlls/shell32/regsvr.c

@@ -526,6 +526,13 @@ static struct regsvr_coclass const coclass_list[] = {
 	"Apartment",
 	SHELLFOLDER_WANTSFORPARSING
     },
+    {   &CLSID_UnixDosFolder,
+	"/",
+	NULL,
+	"shell32.dll",
+	"Apartment",
+	SHELLFOLDER_WANTSFORPARSING
+    },
     { NULL }			/* list terminator */
 };
 

dlls/shell32/shell32_main.h

@@ -93,6 +93,7 @@ HRESULT WINAPI IDropTargetHelper_Constructor (IUnknown * pUnkOuter, REFIID riid,
 HRESULT WINAPI IFileSystemBindData_Constructor(const WIN32_FIND_DATAW *pfd, LPBC *ppV);
 HRESULT WINAPI IControlPanel_Constructor(IUnknown * pUnkOuter, REFIID riid, LPVOID * ppv);
 HRESULT WINAPI UnixFolder_Constructor(IUnknown * pUnkOuter, REFIID riid, LPVOID * ppv);
+HRESULT WINAPI UnixDosFolder_Constructor(IUnknown * pUnkOuter, REFIID riid, LPVOID *ppv);
 extern HRESULT CPanel_GetIconLocationW(LPITEMIDLIST, LPWSTR, UINT, int*);
 HRESULT WINAPI CPanel_ExtractIconA(LPITEMIDLIST pidl, LPCSTR pszFile, UINT nIconIndex, HICON *phiconLarge, HICON *phiconSmall, UINT nIconSize);
 HRESULT WINAPI CPanel_ExtractIconW(LPITEMIDLIST pidl, LPCWSTR pszFile, UINT nIconIndex, HICON *phiconLarge, HICON *phiconSmall, UINT nIconSize);
@@ -225,6 +226,7 @@ UINT SHELL_FindExecutable(LPCWSTR lpPath, LPCWSTR lpFile, LPCWSTR lpOperation,
 extern WCHAR swShell32Name[MAX_PATH];
 
 extern const GUID CLSID_UnixFolder;
+extern const GUID CLSID_UnixDosFolder;
 
 /* Default shell folder value registration */
 HRESULT SHELL_RegisterShellFolders(void);

dlls/shell32/shellole.c

@@ -72,6 +72,7 @@ struct {
 	{&CLSID_ControlPanel,	&IControlPanel_Constructor},
 	{&CLSID_AutoComplete,   &IAutoComplete_Constructor},
 	{&CLSID_UnixFolder,     &UnixFolder_Constructor},
+	{&CLSID_UnixDosFolder,  &UnixDosFolder_Constructor},
 	{NULL,NULL}
 };