CmpVolumeManagerGetContextForFile

INT64 __fastcall CmpVolumeManagerGetContextForFile(INT64 a1, VOID *a2, INT64 a3, INT64 *a4){
  _OBJECT_TYPE *v5; 
  int v6; 
  struct _DMA_ADAPTER *AttachedDeviceReference; 
  NTSTATUS v8; 
  INT64 v9; 
  INT64 v10; 
  __int64 ContextForGuidUnsafe; 
  INT64 v12; 
  struct _PRIVILEGE_SET *v13; 
  INT64 v15; 
  __int64 *v16; 
  PPRIVILEGE_SET Privileges; 
  PADAPTER_OBJECT DmaAdapter; 
  GUID Guid; 
  Privileges = 0i64;
  DmaAdapter = 0i64;
  v5 = *(_OBJECT_TYPE **)CmIoFileObjectType;
  Guid = 0i64;
  v6 = ObReferenceObjectByHandle(a2, 0x80u, v5, 0, (PVOID *)&DmaAdapter, 0i64);
  if( v6 < 0 )
    goto LABEL_15;
  AttachedDeviceReference = (struct _DMA_ADAPTER *)IoGetAttachedDeviceReference((DEVICE_OBJECT *)DmaAdapter->DmaOperations);
  v8 = IoVolumeDeviceToGuid(AttachedDeviceReference, &Guid);
  v6 = v8;
  if( v8 == -1073741811 || v8 == -1073741637 || v8 == -1073741808 )
  {
    v6 = CmpVolumeContextCreate(v9, 0i64, (INT64 *)&Privileges);
    if( v6 >= 0 )
    {
      CmpVolumeManagerLockContextListExclusive((UINT64)&CmpVolumeManager);
      goto LABEL_20;
    }
LABEL_24:
    v13 = Privileges;
LABEL_11:
    if( v13 )
      CmpVolumeContextFree(v13);
    goto LABEL_13;
  }
  if( v8 >= 0 )
  {
    ExAcquirePushLockSharedEx((UINT64)&CmpVolumeManager, 0i64);
    ContextForGuidUnsafe = CmpVolumeManagerGetContextForGuidUnsafe(v10, &Guid);
    if( _InterlockedCompareExchange64((volatile signed __int64 *)&CmpVolumeManager, 0i64, 17i64) != 17 )
      ExfReleasePushLockShared((INT64 *)&CmpVolumeManager);
    KeAbPostRelease(&CmpVolumeManager);
    if( ContextForGuidUnsafe )
    {
      v13 = Privileges;
LABEL_10:
      *a4 = ContextForGuidUnsafe;
      v6 = 0;
      goto LABEL_11;
    }
    v6 = CmpVolumeContextCreate(v12, AttachedDeviceReference, (INT64 *)&Privileges);
    if( v6 >= 0 )
    {
      CmpVolumeManagerLockContextListExclusive((UINT64)&CmpVolumeManager);
      ContextForGuidUnsafe = CmpVolumeManagerGetContextForGuidUnsafe(v15, &Guid);
      if( ContextForGuidUnsafe )
      {
        v13 = Privileges;
LABEL_22:
        CmpVolumeManagerUnlockContextListExclusive(&CmpVolumeManager);
        goto LABEL_10;
      }
LABEL_20:
      v16 = (__int64 *)qword_140D2DF60;
      if( *(__int64 **)qword_140D2DF60 != &qword_140D2DF58 )
        __fastfail(3u);
      ContextForGuidUnsafe = (__int64)Privileges;
      v13 = 0i64;
      *(_QWORD *)&Privileges->PrivilegeCount = &qword_140D2DF58;
      *(_QWORD *)(ContextForGuidUnsafe + 8) = v16;
      *v16 = ContextForGuidUnsafe;
      qword_140D2DF60 = ContextForGuidUnsafe;
      goto LABEL_22;
    }
    goto LABEL_24;
  }
LABEL_13:
  if( AttachedDeviceReference )
    HalPutDmaAdapter(AttachedDeviceReference);
LABEL_15:
  if( DmaAdapter )
    HalPutDmaAdapter(DmaAdapter);
  return(unsigned int)v6;
}

Referenced by: