kernel32/tests: Added more shared memory tests, exposing MAP_PRIVATE mapping for…

dlls/kernel32/tests/virtual.c

@@ -2447,7 +2447,7 @@ todo_wine
     DeleteFileA(file_name);
 }
 
-static void test_shared_memory(int is_child)
+static void test_shared_memory(BOOL is_child)
 {
     HANDLE mapping;
     LONG *p;
@@ -2489,6 +2489,48 @@ static void test_shared_memory(int is_child)
     CloseHandle(mapping);
 }
 
+static void test_shared_memory_ro(BOOL is_child)
+{
+    HANDLE mapping;
+    LONG *p;
+
+    SetLastError(0xdeadbef);
+    mapping = CreateFileMappingA(INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE, 0, 4096, "winetest_virtual.c_ro");
+    ok(mapping != 0, "CreateFileMapping error %d\n", GetLastError());
+    if (is_child)
+        ok(GetLastError() == ERROR_ALREADY_EXISTS, "expected ERROR_ALREADY_EXISTS, got %d\n", GetLastError());
+
+    SetLastError(0xdeadbef);
+    p = MapViewOfFile(mapping, FILE_MAP_READ | (is_child ? FILE_MAP_WRITE : 0), 0, 0, 4096);
+    ok(p != NULL, "MapViewOfFile error %d\n", GetLastError());
+
+    if (is_child)
+    {
+        *p = 0xdeadbeef;
+    }
+    else
+    {
+        char **argv;
+        char cmdline[MAX_PATH];
+        PROCESS_INFORMATION pi;
+        STARTUPINFOA si = { sizeof(si) };
+        DWORD ret;
+
+        winetest_get_mainargs(&argv);
+        sprintf(cmdline, "\"%s\" virtual sharedmemro", argv[0]);
+        ret = CreateProcessA(argv[0], cmdline, NULL, NULL, FALSE, 0, NULL, NULL, &si, &pi);
+        ok(ret, "CreateProcess(%s) error %d\n", cmdline, GetLastError());
+        winetest_wait_child_process(pi.hProcess);
+        CloseHandle(pi.hThread);
+        CloseHandle(pi.hProcess);
+
+        ok(*p == 0xdeadbeef, "*p = %x, expected 0xdeadbeef\n", *p);
+    }
+
+    UnmapViewOfFile(p);
+    CloseHandle(mapping);
+}
+
 START_TEST(virtual)
 {
     int argc;
@@ -2504,7 +2546,12 @@ START_TEST(virtual)
         }
         if (!strcmp(argv[2], "sharedmem"))
         {
-            test_shared_memory(1);
+            test_shared_memory(TRUE);
+            return;
+        }
+        if (!strcmp(argv[2], "sharedmemro"))
+        {
+            test_shared_memory_ro(TRUE);
             return;
         }
         while (1)
@@ -2532,7 +2579,8 @@ START_TEST(virtual)
     pNtMapViewOfSection = (void *)GetProcAddress(GetModuleHandleA("ntdll.dll"), "NtMapViewOfSection");
     pNtUnmapViewOfSection = (void *)GetProcAddress(GetModuleHandleA("ntdll.dll"), "NtUnmapViewOfSection");
 
-    test_shared_memory(0);
+    test_shared_memory(FALSE);
+    test_shared_memory_ro(FALSE);
     test_mapping();
     test_CreateFileMapping_protection();
     test_VirtualAlloc_protection();