使用 MiniDump 获取句柄信息导致 ArgumentException

Question

我正在尝试获取有关某些进程句柄的小型转储信息。我得到了一个 MINIDUMP_HANDLE_DESCRIPTOR_2 类型的句柄列表，我正在尝试读取有关我可以使用 ObjectInfoRva.

访问的句柄的信息

但是，我总是得到这个异常：

System.ArgumentException occurred HResult=-2147024809 Message=Not enough space available in the buffer. Source=mscorlib

这就是我的方法

public unsafe DbgHelp.MINIDUMP_HANDLE_OBJECT_INFORMATION ReadInfo(uint rva)
{
    try
    {
        DbgHelp.MINIDUMP_HANDLE_OBJECT_INFORMATION result = default(DbgHelp.MINIDUMP_HANDLE_OBJECT_INFORMATION);
        byte* baseOfView = null;
        _safeMemoryMappedViewHandle.AcquirePointer(ref baseOfView);

        IntPtr position = new IntPtr(baseOfView + rva);

        result = _safeMemoryMappedViewHandle.Read<DbgHelp.MINIDUMP_HANDLE_OBJECT_INFORMATION>((ulong)position);
        return result;
    }
    finally
    {
        _safeMemoryMappedViewHandle.ReleasePointer();
    }
}

MINIDUMP_HANDLE_DESCRIPTOR_2声明：

 public struct MINIDUMP_HANDLE_DESCRIPTOR_2
{
    public UInt64 Handle;
    public uint TypeNameRva;
    public uint ObjectNameRva;
    public UInt32 Attributes;
    public UInt32 GrantedAccess;
    public UInt32 HandleCount;
    public UInt32 PointerCount;
    public uint ObjectInfoRva;
    public UInt32 Reserved0;
}

_safeMemoryMappedViewHandle 已初始化 - 这就是我首先获得句柄列表的方式。

我做错了什么？

Answer 1

问题出在 baseOfView 指针上 - 我没有计算正确。我需要根据基本流地址设置相应的偏移量...

这是最终对我有用的 ReadInfo 函数的一个版本：

public unsafe DbgHelp.MINIDUMP_HANDLE_OBJECT_INFORMATION ReadInfo(uint rva, IntPtr streamPtr)
{
    DbgHelp.MINIDUMP_HANDLE_OBJECT_INFORMATION result = new DbgHelp.MINIDUMP_HANDLE_OBJECT_INFORMATION();

    try
    {
        byte* baseOfView = null;
        _safeMemoryMappedViewHandle.AcquirePointer(ref baseOfView);
        ulong offset = (ulong)streamPtr - (ulong)baseOfView;
        result = _safeMemoryMappedViewHandle.Read<DbgHelp.MINIDUMP_HANDLE_OBJECT_INFORMATION>(offset);
    }
    finally
    {
        _safeMemoryMappedViewHandle.ReleasePointer();
    }

    return result;
}

使用 MiniDump 获取句柄信息导致 ArgumentException

Getting handle information with MiniDump causes ArgumentException

c#

exception

handle

minidump