How to add MINIDUMP_IO_CALLBACK to MINIDUMP_CALLBACK_INPUT

[AndyCyberSec]

File: winim\inc\imagehlp.nim

Hello, I have a project where I am using MINIDUMP_CALLBACK_INPUT

  MINIDUMP_CALLBACK_INPUT* {.pure, packed.} = object
    ProcessId*: ULONG
    ProcessHandle*: HANDLE
    CallbackType*: ULONG
    union1*: MINIDUMP_CALLBACK_INPUT_UNION1

Below the union

  MINIDUMP_CALLBACK_INPUT_UNION1* {.pure, union.} = object
    Thread*: MINIDUMP_THREAD_CALLBACK
    ThreadEx*: MINIDUMP_THREAD_EX_CALLBACK
    Module*: MINIDUMP_MODULE_CALLBACK
    IncludeThread*: MINIDUMP_INCLUDE_THREAD_CALLBACK
    IncludeModule*: MINIDUMP_INCLUDE_MODULE_CALLBACK

I am missing some stuff like MINIDUMP_IO_CALLBACK Io; the code below comes from microsoft documentation

typedef struct _MINIDUMP_CALLBACK_INPUT {
  ULONG  ProcessId;
  HANDLE ProcessHandle;
  ULONG  CallbackType;
  union {
    HRESULT                               Status;
    MINIDUMP_THREAD_CALLBACK              Thread;
    MINIDUMP_THREAD_EX_CALLBACK           ThreadEx;
    MINIDUMP_MODULE_CALLBACK              Module;
    MINIDUMP_INCLUDE_THREAD_CALLBACK      IncludeThread;
    MINIDUMP_INCLUDE_MODULE_CALLBACK      IncludeModule;
    MINIDUMP_IO_CALLBACK                  Io;
    MINIDUMP_READ_MEMORY_FAILURE_CALLBACK ReadMemoryFailure;
    ULONG                                 SecondaryFlags;
    MINIDUMP_VM_QUERY_CALLBACK            VmQuery;
    MINIDUMP_VM_PRE_READ_CALLBACK         VmPreRead;
    MINIDUMP_VM_POST_READ_CALLBACK        VmPostRead;
  };
} MINIDUMP_CALLBACK_INPUT, *PMINIDUMP_CALLBACK_INPUT;

How can I add the support to MINIDUMP_IO_CALLBACK?

thanks for your time

[khchen]

Here's how you can get it working:

import winim/[lean, inc/imagehlp]

type
  MINIDUMP_IO_CALLBACK = object
    Handle: HANDLE
    Offset: ULONG64
    Buffer: PVOID
    BufferBytes: ULONG

  PMINIDUMP_IO_CALLBACK = ptr MINIDUMP_IO_CALLBACK

var mci: MINIDUMP_CALLBACK_INPUT

doAssert(sizeof(mci.union1) > sizeof(MINIDUMP_IO_CALLBACK))

echo cast[PMINIDUMP_IO_CALLBACK](addr mci.union1)[]