利用 .NET Framework 識別鎖定文件的進(jìn)程

傳統(tǒng)上，查明 .NET 框架內(nèi)持有文件鎖的特定進(jìn)程是一項(xiàng)重大挑戰(zhàn)。 然而，隨著現(xiàn)代 Windows 的進(jìn)步，重新啟動管理器 API 現(xiàn)在提供了一種可靠的機(jī)制來跟蹤此信息。

解決方案實(shí)施：

以下代碼片段提供了一種可靠的方法來識別已在指定文件上建立鎖定的進(jìn)程：

public static List<Process> IdentifyFileLockers(string filePath)
{
    uint sessionHandle;
    string sessionKey = Guid.NewGuid().ToString();
    List<Process> lockedByProcesses = new List<Process>();

    int result = RmStartSession(out sessionHandle, 0, sessionKey);
    if (result != 0) throw new Exception("Failed to initiate restart session.  Unable to identify file locker.");

    try
    {
        const int ERROR_MORE_DATA = 234;
        uint processesNeeded = 0,
            processesReturned = 0,
            rebootReasons = RmRebootReasonNone;

        string[] resources = new string[] { filePath }; // Targeting a single resource.

        result = RmRegisterResources(sessionHandle, (uint)resources.Length, resources, 0, null, 0, null);

        if (result != 0) throw new Exception("Resource registration failed.");

        //Note: A race condition exists here. The initial RmGetList() call returns
        //      the total process count.  Subsequent RmGetList() calls to retrieve
        //      actual processes might encounter an increased count.
        result = RmGetList(sessionHandle, out processesNeeded, ref processesReturned, null, ref rebootReasons);

        if (result == ERROR_MORE_DATA)
        {
            // Allocate an array to store process information.
            RM_PROCESS_INFO[] processInfoArray = new RM_PROCESS_INFO[processesNeeded];
            processesReturned = processesNeeded;

            // Retrieve the process list.
            result = RmGetList(sessionHandle, out processesNeeded, ref processesReturned, processInfoArray, ref rebootReasons);
            if (result == 0)
            {
                lockedByProcesses = new List<Process>((int)processesReturned);

                // Iterate through results and populate the return list.
                for (int i = 0; i < processesReturned; i++)
                {
                    try
                    {
                        //Attempt to get the process by ID.  May fail if the process is already gone.
                        Process p = Process.GetProcessById(processInfoArray[i].Process.dwProcessId);
                        lockedByProcesses.Add(p);
                    }
                    catch (ArgumentException) { } // Ignore processes that no longer exist.
                }
            }
        }
    }
    finally
    {
        RmEndSession(sessionHandle);
    }

    return lockedByProcesses;
}

重要提示：執(zhí)行此代碼需要非特權(quán)的注冊表訪問。如果進(jìn)程缺乏必要的權(quán)限，建議實(shí)現(xiàn) IPC 機(jī)制（例如命名管道）以將調(diào)用委托給特權(quán)進(jìn)程。

以上是如何使用重新啟動管理器 API 識別在 .NET 中鎖定文件的進(jìn)程？的詳細(xì)內(nèi)容。更多信息請關(guān)注PHP中文網(wǎng)其他相關(guān)文章！