Implement PalGetModuleFileName for Unix

This change implements PalGetModuleFileName for Unix. Since the module name
passed to us is a utf-8 string, I have modified the signature of the function
to use TCHAR and then modified managed RhGetModuleFileName interop signature
to use byte* for Unix instead of char*. And I have also modified the called
of this function, the TryGetFullPathToApplicationModule, to perform
conversion of that to regular string.

2 files changed, 3 insertions, 3 deletions

diff --git a/src/Native/Runtime/windows/PalRedhawkCommon.cpp b/src/Native/Runtime/windows/PalRedhawkCommon.cpp
index 9d09379d0..151e00968 100644
--- a/src/Native/Runtime/windows/PalRedhawkCommon.cpp
+++ b/src/Native/Runtime/windows/PalRedhawkCommon.cpp
@@ -378,7 +378,7 @@ typedef struct _TEB {
 //NOTE:  This implementation exists because calling GetModuleFileName is not wack compliant.  if we later decide
 //       that the framework package containing mrt100_app no longer needs to be wack compliant, this should be 
 //       removed and the windows implementation of GetModuleFileName should be substitued on windows.
-REDHAWK_PALEXPORT Int32 PalGetModuleFileName(_Out_ wchar_t** pModuleNameOut, HANDLE moduleBase)
+REDHAWK_PALEXPORT Int32 PalGetModuleFileName(_Out_ const TCHAR** pModuleNameOut, HANDLE moduleBase)
 {
     TEB* pTEB = NtCurrentTeb();
     LIST_ENTRY* pStartLink = &(pTEB->ProcessEnvironmentBlock->Ldr->InMemoryOrderModuleList);
diff --git a/src/Native/Runtime/windows/PalRedhawkMinWin.cpp b/src/Native/Runtime/windows/PalRedhawkMinWin.cpp
index 86ad38de7..1ead83c13 100644
--- a/src/Native/Runtime/windows/PalRedhawkMinWin.cpp
+++ b/src/Native/Runtime/windows/PalRedhawkMinWin.cpp
@@ -190,7 +190,7 @@ extern "C" UInt64 PalGetCurrentThreadIdForLogging()
     }                                                   \
     WHILE_0;
 
-extern "C" int __stdcall PalGetModuleFileName(_Out_ wchar_t** pModuleNameOut, HANDLE moduleBase);
+extern "C" int __stdcall PalGetModuleFileName(_Out_ const TCHAR** pModuleNameOut, HANDLE moduleBase);
 
 HRESULT STDMETHODCALLTYPE AllocateThunksFromTemplate(
     _In_ HANDLE hTemplateModule,
@@ -204,7 +204,7 @@ HRESULT STDMETHODCALLTYPE AllocateThunksFromTemplate(
     bool success = false;
     HANDLE hMap = NULL, hFile = INVALID_HANDLE_VALUE;
 
-    WCHAR * wszModuleFileName = NULL;
+    const WCHAR * wszModuleFileName = NULL;
     if (PalGetModuleFileName(&wszModuleFileName, hTemplateModule) == 0 || wszModuleFileName == NULL)
         return E_FAIL;