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在尝试开发硬盘分析工具时,我试图从硬盘的 SMART 数据中获取加载/卸载周期计数的值,我想知道是否有人知道如何做到这一点。我正在尝试什么:

  1. 我正在搜索 WMIMSStorageDriver_ATAPISmartData类数据,其中属性号193是我需要的(表示加载/卸载循环计数的属性)
  2. 我得到的数据看起来像

在此处输入图像描述

我想我已经接近了,红色的数据与我运行 Everest Home 版本时显示的数据相同,理想情况下我想要最后一部分(属性称为数据)

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收集此数据的方法:

static void doStuff()
{
    try
    {

        byte TEMPERATURE_ATTRIBUTE = 193;

        ManagementObjectSearcher searcher = new ManagementObjectSearcher(@"\root\WMI", "SELECT * FROM MSStorageDriver_ATAPISmartData");
        //loop through all the hard disks
        foreach (ManagementObject queryObj in searcher.Get())
        {
            byte[] arrVendorSpecific = (byte[])queryObj.GetPropertyValue("VendorSpecific");

            int tempIndex = Array.IndexOf(arrVendorSpecific, TEMPERATURE_ATTRIBUTE);
            Console.WriteLine("HDD TEMP: " + arrVendorSpecific[tempIndex + 5].ToString());

            foreach (byte dat in arrVendorSpecific)
            {
                Console.Write(dat.ToString() + " ");
            }
        }

    }
    catch (Exception err) { Console.WriteLine(err.Message); }
}

PS这种方法适用于收集硬盘的温度(这就是这Console.WriteLine("HDD TEMP: " + arrVendorSpecific[tempIndex + 5].ToString());条线的全部内容,但我不确定为什么它的 tempIndex+5

4

1 回答 1

9

您使用的代码不正确,因为您正在使用安全搜索 (Array.IndexOf) 来查找 SMART Attribute ID(您可能有误报,因为该值可以与数组中的另一个值匹配),这些属性的 ID 有文档结构 ( SMART Attribute Overview) 内的固定位置。

SMART属性表

Offset  Length  Description
        (bytes) 
0         2      SMART structure version (this is vendor-specific)
2         12     Attribute entry 1
2+(12)    12     Attribute entry 2
. . .
2+(12*29) 12     Attribute entry 30

属性表中的条目

在此处输入图像描述

从这里您可以编写代码来搜索每个属性的位置并获取您正在寻找的值

using System;
using System.Collections.Generic;
using System.Management;
using System.Text;
using System.Runtime.InteropServices;

namespace GetWMI_Info
{
    class Program
    {

        [StructLayout(LayoutKind.Sequential)]
        public struct Attribute
        {
            public byte AttributeID;
            public ushort Flags;
            public byte Value;
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 8)]
            public byte[] VendorData;
        }

        static void Main(string[] args)
        {
            try
            {
                Attribute AtributeInfo;
                ManagementScope Scope = new ManagementScope(String.Format("\\\\{0}\\root\\WMI", "localhost"), null);
                Scope.Connect();
                ObjectQuery Query = new ObjectQuery("SELECT VendorSpecific FROM MSStorageDriver_ATAPISmartData");
                ManagementObjectSearcher Searcher = new ManagementObjectSearcher(Scope, Query);
                byte LoadCycleCount = 0xC1;
                int Delta  = 12;
                foreach (ManagementObject WmiObject in Searcher.Get())
                {
                    byte[] VendorSpecific = (byte[])WmiObject["VendorSpecific"];
                    for (int offset = 2; offset < VendorSpecific.Length; )
                    {
                        if (VendorSpecific[offset] == LoadCycleCount)
                        {

                            IntPtr buffer = IntPtr.Zero;
                            try
                            {
                                buffer = Marshal.AllocHGlobal(Delta);
                                Marshal.Copy(VendorSpecific, offset, buffer, Delta);
                                AtributeInfo = (Attribute)Marshal.PtrToStructure(buffer, typeof(Attribute));
                                Console.WriteLine("AttributeID {0}", AtributeInfo.AttributeID);
                                Console.WriteLine("Flags {0}", AtributeInfo.Flags);
                                Console.WriteLine("Value {0}", AtributeInfo.Value);
                                Console.WriteLine("Value {0}", BitConverter.ToString(AtributeInfo.VendorData));
                            }
                            finally
                            {
                                if (buffer != IntPtr.Zero)
                                {
                                    Marshal.FreeHGlobal(buffer);
                                }
                            }                                                
                        }
                        offset += Delta;
                    }
                }
            }
            catch (Exception e)
            {
                Console.WriteLine(String.Format("Exception {0} Trace {1}",e.Message,e.StackTrace));
            }
            Console.WriteLine("Press Enter to exit");
            Console.Read();
        }
    }
}
于 2012-03-24T19:13:55.310 回答