IopAllocateReserveIrp

_IRP *__stdcall IopAllocateReserveIrp(CHAR StackSize, _IOP_RESERVE_IRP_TYPE IrpType, _IOP_RESERVE_IRP_TYPE a3){
  char v3; 
  __int16 v4; 
  __int64 v5; 
  __int64 v6; 
  __int64 v8; 
  __int64 v9; 
  __int64 v10; 
  __int64 v11; 
  _LARGE_INTEGER v12; 

  v12.QuadPart = StackSize;
  if( (char)IrpType > *(&stru_140C452E0 + 1984) )
    return 0i64;
  v3 = IrpType + 1;
  v4 = (char)(IrpType + 1);
  if( a3 == IopPagefileReadIrp )
  {
    while( _InterlockedExchange((_DWORD *)&stru_140C452E0 + 442, 1) == 1 )
      KeWaitForSingleObject((UINT64)&stru_140C452E0 + 1776, 0, 0, 0, 0i64);
    LOBYTE(a3) = v3;
    IoInitializeIrp(*(&stru_140C452E0 + 220), 8 * (8 * v3 + v4) + 208, a3);
    *(_BYTE *)(*(&stru_140C452E0 + 220) + 71i64) = 33;
    v5 = *(&stru_140C452E0 + 220);
    *(_QWORD *)(*(&stru_140C452E0 + 220) + 184i64) -= 72i64;
    v6 = *(_QWORD *)(v5 + 184);
    --*(_BYTE *)(v5 + 67);
    --*(_BYTE *)(v5 + 66);
    *(_QWORD *)(v5 + 200) = v6;
    if( IopIsActivityTracingEnabled() )
      IopInitActivityIdIrp(*(&stru_140C452E0 + 220));
    return(_IRP *)*(&stru_140C452E0 + 220);
  }
  if( a3 == IopPagefileWriteIrp )
  {
    while( _InterlockedExchange((_DWORD *)&stru_140C452E0 + 452, 1) == 1 )
      KeWaitForSingleObject((UINT64)&stru_140C452E0 + 1816, 0, 0, 0, 0i64);
    LOBYTE(a3) = v3;
    IoInitializeIrp(*(&stru_140C452E0 + 225), 72 * v3 + 208, a3);
    *(_BYTE *)(*(&stru_140C452E0 + 225) + 71i64) = 33;
    v8 = *(&stru_140C452E0 + 225);
    *(_QWORD *)(*(&stru_140C452E0 + 225) + 184i64) -= 72i64;
    v9 = *(_QWORD *)(v8 + 184);
    --*(_BYTE *)(v8 + 67);
    --*(_BYTE *)(v8 + 66);
    *(_QWORD *)(v8 + 200) = v9;
    if( IopIsActivityTracingEnabled() )
      IopInitActivityIdIrp(*(&stru_140C452E0 + 225));
    return(_IRP *)*(&stru_140C452E0 + 225);
  }
  if( a3 != IopMustSucceedIrp )
    return 0i64;
  v12.QuadPart = 0i64;
  while( _InterlockedExchange((_DWORD *)&stru_140C452E0 + 462, 1) == 1 )
  {
    v12.QuadPart = -50000000i64;
    if( KeWaitForSingleObject((UINT64)&stru_140C452E0 + 1856, 0, 0, 0, (INT64)&v12) == 258 )
      return 0i64;
  }
  LOBYTE(a3) = v3;
  IoInitializeIrp(*(&stru_140C452E0 + 230), 72 * v3 + 208, a3);
  *(_BYTE *)(*(&stru_140C452E0 + 230) + 71i64) = 33;
  v10 = *(&stru_140C452E0 + 230);
  *(_QWORD *)(*(&stru_140C452E0 + 230) + 184i64) -= 72i64;
  v11 = *(_QWORD *)(v10 + 184);
  --*(_BYTE *)(v10 + 67);
  --*(_BYTE *)(v10 + 66);
  *(_QWORD *)(v10 + 200) = v11;
  if( IopIsActivityTracingEnabled() )
    IopInitActivityIdIrp(*(&stru_140C452E0 + 230));
  return(_IRP *)*(&stru_140C452E0 + 230);
}

Referenced by: