Zebediah Figura : kernel32: Allow GetModuleFileNameEx() to succeed on a WoW64 process.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 54f287d88a13d99f3aa49528024378478988afa3
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=54f287d88a13d99f3aa49528024378478988afa3

Author: Zebediah Figura <z.figura12 at gmail.com>
Date:   Tue May 29 09:33:05 2018 -0500

kernel32: Allow GetModuleFileNameEx() to succeed on a WoW64 process.

Signed-off-by: Zebediah Figura <z.figura12 at gmail.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 dlls/kernel32/module.c        | 29 ++++++++++++++++++++++++-----
 dlls/psapi/tests/psapi_main.c |  5 +++++
 2 files changed, 29 insertions(+), 5 deletions(-)

diff --git a/dlls/kernel32/module.c b/dlls/kernel32/module.c
index 41080aa..01d28a8 100644
--- a/dlls/kernel32/module.c
+++ b/dlls/kernel32/module.c
@@ -1812,17 +1812,36 @@ DWORD WINAPI K32GetModuleFileNameExW(HANDLE process, HMODULE module,
                                      LPWSTR file_name, DWORD size)
 {
     LDR_MODULE ldr_module;
+    BOOL wow64;
     DWORD len;
 
     if (!size) return 0;
 
-    if(!get_ldr_module(process, module, &ldr_module))
+    if (!IsWow64Process(process, &wow64))
         return 0;
 
-    len = ldr_module.FullDllName.Length / sizeof(WCHAR);
-    if (!ReadProcessMemory(process, ldr_module.FullDllName.Buffer,
-                           file_name, min( len, size ) * sizeof(WCHAR), NULL))
-        return 0;
+    if (sizeof(void *) == 8 && wow64)
+    {
+        LDR_MODULE32 ldr_module32;
+
+        if (!get_ldr_module32(process, module, &ldr_module32))
+            return 0;
+
+        len = ldr_module32.FullDllName.Length / sizeof(WCHAR);
+        if (!ReadProcessMemory(process, (void *)(DWORD_PTR)ldr_module32.FullDllName.Buffer,
+                               file_name, min( len, size ) * sizeof(WCHAR), NULL))
+            return 0;
+    }
+    else
+    {
+        if (!get_ldr_module(process, module, &ldr_module))
+            return 0;
+
+        len = ldr_module.FullDllName.Length / sizeof(WCHAR);
+        if (!ReadProcessMemory(process, ldr_module.FullDllName.Buffer,
+                               file_name, min( len, size ) * sizeof(WCHAR), NULL))
+            return 0;
+    }
 
     if (len < size)
     {
diff --git a/dlls/psapi/tests/psapi_main.c b/dlls/psapi/tests/psapi_main.c
index cc38706..fccf82d 100644
--- a/dlls/psapi/tests/psapi_main.c
+++ b/dlls/psapi/tests/psapi_main.c
@@ -202,6 +202,11 @@ static void test_EnumProcessModules(void)
         ok(ret, "got error %u\n", GetLastError());
         ok(!strcmp(name, "notepad.exe"), "got %s\n", name);
 
+        ret = GetModuleFileNameExA(pi.hProcess, hMod, name, sizeof(name));
+        ok(ret, "got error %u\n", GetLastError());
+todo_wine
+        ok(!strcmp(name, buffer), "got %s\n", name);
+
         TerminateProcess(pi.hProcess, 0);
     }
     else if (wow64)