win: Write memory map info as MINIDUMP_MEMORY_INFO[_LIST]

handler/win/crashy_test_program.cc

 // Copyright 2015 The Crashpad Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
 #include <windows.h>
 #include <winternl.h>
 
 // ntstatus.h conflicts with windows.h so define this locally.
 #ifndef STATUS_NO_SUCH_FILE
 #define STATUS_NO_SUCH_FILE static_cast<NTSTATUS>(0xC000000F)
 #endif
 
+#include "base/basictypes.h"
 #include "base/logging.h"
 #include "client/crashpad_client.h"
 #include "tools/tool_support.h"
 
 namespace crashpad {
 namespace {
 
 ULONG RtlNtStatusToDosError(NTSTATUS status) {
   static decltype(::RtlNtStatusToDosError)* rtl_nt_status_to_dos_error =
       reinterpret_cast<decltype(::RtlNtStatusToDosError)*>(
           GetProcAddress(LoadLibrary(L"ntdll.dll"), "RtlNtStatusToDosError"));
   DCHECK(rtl_nt_status_to_dos_error);
   return rtl_nt_status_to_dos_error(status);
 }
 
+void AllocateMemoryOfVariousProtections() {
+  SYSTEM_INFO system_info;
+  GetSystemInfo(&system_info);
+
+  const size_t kPageSize = system_info.dwPageSize;
+
+  const uint32_t kPageTypes[] = {
+    PAGE_NOACCESS,
+    PAGE_READONLY,
+    PAGE_READWRITE,
+    PAGE_EXECUTE,
+    PAGE_EXECUTE_READ,
+    PAGE_EXECUTE_READWRITE,
+
+    // PAGE_NOACCESS is invalid with PAGE_GUARD.
+    PAGE_READONLY | PAGE_GUARD,
+    PAGE_READWRITE | PAGE_GUARD,
+    PAGE_EXECUTE | PAGE_GUARD,
+    PAGE_EXECUTE_READ | PAGE_GUARD,
+    PAGE_EXECUTE_READWRITE | PAGE_GUARD,
+  };
+
+  // All of these allocations are leaked, we want to view them in windbg via
+  // !vprot.
+  void* reserve = VirtualAlloc(
+      nullptr, arraysize(kPageTypes) * kPageSize, MEM_RESERVE, PAGE_READWRITE);
+  PCHECK(reserve) << "VirtualAlloc MEM_RESERVE";
+  uintptr_t reserve_as_int = reinterpret_cast<uintptr_t>(reserve);
+
+  for (size_t i = 0; i < arraysize(kPageTypes); ++i) {
+    void* result =
+        VirtualAlloc(reinterpret_cast<void*>(reserve_as_int + (kPageSize * i)),
+                     kPageSize,
+                     MEM_COMMIT,
+                     kPageTypes[i]);
+    PCHECK(result) << "VirtualAlloc MEM_COMMIT " << i;
+  }
+}
+
 void SomeCrashyFunction() {
   // SetLastError and NTSTATUS so that we have something to view in !gle in
   // windbg. RtlNtStatusToDosError() stores STATUS_NO_SUCH_FILE into the
   // LastStatusError of the TEB as a side-effect, and we'll be setting
   // ERROR_FILE_NOT_FOUND for GetLastError().
   SetLastError(RtlNtStatusToDosError(STATUS_NO_SUCH_FILE));
   volatile int* foo = reinterpret_cast<volatile int*>(7);
   *foo = 42;
 }
 
 int CrashyMain(int argc, char* argv[]) {
   if (argc != 2) {
     fprintf(stderr, "Usage: %s <server_pipe_name>\n", argv[0]);
     return 1;
   }
 
   CrashpadClient client;
   if (!client.SetHandler(argv[1])) {
     LOG(ERROR) << "SetHandler";
     return 1;
   }
   if (!client.UseHandler()) {
     LOG(ERROR) << "UseHandler";
     return 1;
   }
 
+  AllocateMemoryOfVariousProtections();
+
   SomeCrashyFunction();
 
   return 0;
 }
 
 }  // namespace
 }  // namespace crashpad
 
 int wmain(int argc, wchar_t* argv[]) {
   return crashpad::ToolSupport::Wmain(argc, argv, crashpad::CrashyMain);
 }