FsFilterPerformCallbacks

INT64 __fastcall FsFilterPerformCallbacks(INT64 a1, CHAR a2, CHAR a3, _DWORD *a4){
  __int64 v4; 
  UINT8 v9; 
  __int64 v10; 
  __int16 v11; 
  PFS_FILTER_CALLBACK v12; 
  PFS_FILTER_COMPLETION_CALLBACK v13; 
  unsigned __int16 v14; 
  _QWORD *v15; 
  _QWORD *v16; 
  INT64 result; 
  PFS_FILTER_COMPLETION_CALLBACK PostOperationCallback; 
  PFS_FILTER_CALLBACK PreOperationCallback; 
  v4 = *(_QWORD *)(a1 + 8);
  PreOperationCallback = 0i64;
  PostOperationCallback = 0i64;
  *a4 = 2;
  if( !v4 )
    return 0i64;
  while( 1 )
  {
    v9 = *(_BYTE *)(a1 + 4);
    v10 = *(_QWORD *)(*(_QWORD *)(v4 + 312) + 48i64);
    *(_QWORD *)(a1 + 8) = v4;
    FsFilterGetCallbacks(v9, (PDEVICE_OBJECT)v4, &PreOperationCallback, &PostOperationCallback);
    v12 = PreOperationCallback;
    v13 = PostOperationCallback;
    if( !PreOperationCallback )
      break;
    if( PostOperationCallback )
      goto LABEL_4;
    v15 = 0i64;
LABEL_7:
    if( !v12 )
      goto LABEL_13;
    if( v15 )
      v16 = v15 + 2;
    else
      v16 = 0i64;
    result = ((__int64(__fastcall *)(INT64, _QWORD *))v12)(a1, v16);
    if( (int)result < 0 )
    {
      if( !a2 )
      {
        if( !v10 )
          goto LABEL_36;
        goto LABEL_12;
      }
      if( !v10 )
      {
LABEL_36:
        if( !a3 )
          KeBugCheckEx(0x22u, (int)result, 0i64, 0x38Cui64, 0i64);
        *a4 |= 1u;
      }
      if( !v15 )
        return result;
LABEL_40:
      --*(_WORD *)(a1 + 74);
      return result;
    }
    if( (_DWORD)result )
    {
      if( !v15 )
        return result;
      goto LABEL_40;
    }
LABEL_12:
    v11 = -1;
LABEL_13:
    if( v4 == *(_QWORD *)(a1 + 8) )
    {
      if( !v10 )
      {
        if( v15 )
          *(_WORD *)(a1 + 74) += v11;
      }
      v4 = *(_QWORD *)(*(_QWORD *)(v4 + 312) + 48i64);
    }
    else
    {
      *(_DWORD *)(a1 + 64) |= 4u;
      v4 = *(_QWORD *)(a1 + 8);
    }
LABEL_16:
    if( !v4 )
      return 0i64;
  }
  if( !PostOperationCallback )
  {
    v4 = *(_QWORD *)(*(_QWORD *)(v4 + 312) + 48i64);
    if( !v10 )
      *a4 &= ~2u;
    goto LABEL_16;
  }
LABEL_4:
  v14 = *(_WORD *)(a1 + 74);
  if( v14 < *(_WORD *)(a1 + 72) )
  {
    v15 = (_QWORD *)(*(_QWORD *)(a1 + 80) + 32i64 * *(unsigned __int16 *)(a1 + 74));
    *(_WORD *)(a1 + 74) = v14 + 1;
    if( v15 )
    {
      *v15 = v4;
      v15[1] = *(_QWORD *)(a1 + 16);
      v15[2] = 0i64;
      v15[3] = v13;
      goto LABEL_7;
    }
  }
  if( !a2 )
    KeBugCheckEx(0x22u, 0i64, 0i64, 0i64, 0i64);
  return 3221225626i64;
}

Referenced by: