win: Add Handles() to ProcessInfo

util/win/nt_internals.h

 // 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>
 
 #include "util/win/process_structs.h"
 
 namespace crashpad {
 
 // Copied from ntstatus.h because um/winnt.h conflicts with general inclusion of
 // ntstatus.h.
 #define STATUS_BUFFER_TOO_SMALL ((NTSTATUS)0xC0000023L)
 #define STATUS_INFO_LENGTH_MISMATCH ((NTSTATUS)0xC0000004L)
 
 // winternal.h defines THREADINFOCLASS, but not all members.
 enum { ThreadBasicInformation = 0 };
 
+// winternal.h defines SYSTEM_INFORMATION_CLASS, but not all members.
+enum { SystemExtendedHandleInformation = 64 };
+
 NTSTATUS NtQuerySystemInformation(
     SYSTEM_INFORMATION_CLASS system_information_class,
     PVOID system_information,
     ULONG system_information_length,
     PULONG return_length);
 
 NTSTATUS NtQueryInformationThread(HANDLE thread_handle,
                                   THREADINFOCLASS thread_information_class,
                                   PVOID thread_information,
                                   ULONG thread_information_length,
                                   PULONG return_length);
 
 template <class Traits>
 NTSTATUS NtOpenThread(PHANDLE thread_handle,
                       ACCESS_MASK desired_access,
                       POBJECT_ATTRIBUTES object_attributes,
                       const process_types::CLIENT_ID<Traits>* client_id);
 
+NTSTATUS NtQueryObject(HANDLE handle,
+                       OBJECT_INFORMATION_CLASS object_information_class,
+                       void* object_information,
+                       ULONG object_information_length,
+                       ULONG* return_length);
+
 }  // namespace crashpad