[PATCH v6 2/2] kernelbase: Added a test for MapViewOfFile3 with MEM_REPLACE_PLACEHOLDER

[Felix Münchhalfen]

From: Felix Münchhalfen

---
 dlls/kernelbase/tests/process.c | 34 +++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/dlls/kernelbase/tests/process.c b/dlls/kernelbase/tests/process.c
index 88a527c45d5..6045d04e3bc 100644
--- a/dlls/kernelbase/tests/process.c
+++ b/dlls/kernelbase/tests/process.c
@@ -38,6 +38,7 @@ static LPVOID (WINAPI *pMapViewOfFile3)(HANDLE, HANDLE, PVOID, ULONG64 offset, S
 static LPVOID (WINAPI *pVirtualAlloc2)(HANDLE, void *, SIZE_T, DWORD, DWORD, MEM_EXTENDED_PARAMETER *, ULONG);
 static LPVOID (WINAPI *pVirtualAlloc2FromApp)(HANDLE, void *, SIZE_T, DWORD, DWORD, MEM_EXTENDED_PARAMETER *, ULONG);
 static PVOID (WINAPI *pVirtualAllocFromApp)(PVOID, SIZE_T, DWORD, DWORD);
+static BOOL (WINAPI *pVirtualFree)(LPVOID,SIZE_T,DWORD);
 static HANDLE (WINAPI *pOpenFileMappingFromApp)( ULONG, BOOL, LPCWSTR);
 static HANDLE (WINAPI *pCreateFileMappingFromApp)(HANDLE, PSECURITY_ATTRIBUTES, ULONG, ULONG64, PCWSTR);
 static LPVOID (WINAPI *pMapViewOfFileFromApp)(HANDLE, ULONG, ULONG64, SIZE_T);
@@ -134,6 +135,37 @@ static void test_MapViewOfFile3(void)
     ok(ret, "Failed to delete a test file.\n");
 }

+static void test_MapViewOfFileReplacePlaceholder(void)
+{
+    SYSTEM_INFO si;
+    size_t szFile = 1024UL*1024; // 1M
+    HANDLE hFileMapping;
+    PVOID pAllocation;
+    PVOID pMapStart;
+    PVOID pMapEnd;
+    BOOL bVirtualFree;
+    PVOID pMappedFileView;
+
+    GetSystemInfo(&si);
+
+    hFileMapping = CreateFileMappingA(NULL, NULL, PAGE_READWRITE, 0, (DWORD)szFile, NULL);
+    ok(hFileMapping != NULL, "CreateFileMapping did not return a handle\n");
+
+    pAllocation = pVirtualAlloc2(GetCurrentProcess(), NULL, szFile, MEM_RESERVE | MEM_RESERVE_PLACEHOLDER, PAGE_NOACCESS, NULL, 0);
+    ok(pAllocation != NULL, "VirtualAlloc2 returned NULL\n");
+
+    pMapStart = (void*)(((unsigned long long)pAllocation + si.dwPageSize) & ~(si.dwPageSize-1)); // advance forward to align with pagesize
+    pMapEnd = (void*)(((unsigned long long)pAllocation + 2*si.dwPageSize) & ~(si.dwPageSize-1));
+    bVirtualFree = pVirtualFree(pMapStart, si.dwPageSize, MEM_RELEASE | MEM_PRESERVE_PLACEHOLDER); // split the region into two placeholders
+    ok(bVirtualFree, "VirtualFree failed to split the placeholder\n");
+    pMappedFileView = pMapViewOfFile3(hFileMapping, GetCurrentProcess(), pMapStart, si.dwPageSize, si.dwPageSize, MEM_REPLACE_PLACEHOLDER, PAGE_READWRITE, NULL, 0);
+    ok(pMappedFileView != NULL, "MapViewOfFile3 did not map the FileMapping\n");
+
+    bVirtualFree = pVirtualFree(pMapEnd, szFile - 2*si.dwPageSize, MEM_RELEASE);
+    ok(bVirtualFree, "VirtualFree failed to free the remaining placeholder\n");
+    ok(CloseHandle(hFileMapping), "CloseHandle failed on hFileMapping\n");
+}
+
 #define check_region_size(p, s) check_region_size_(p, s, __LINE__)
 static void check_region_size_(void *p, SIZE_T s, unsigned int line)
 {
@@ -519,6 +551,7 @@ static void init_funcs(void)
     X(VirtualAlloc2);
     X(VirtualAlloc2FromApp);
     X(VirtualAllocFromApp);
+    X(VirtualFree);
     X(UnmapViewOfFile2);

hmod = GetModuleHandleA("ntdll.dll");
@@ -533,6 +566,7 @@ START_TEST(process)

test_CompareObjectHandles();
     test_MapViewOfFile3();
+    test_MapViewOfFileReplacePlaceholder();
     test_VirtualAlloc2();
     test_VirtualAllocFromApp();
     test_VirtualAlloc2FromApp();