Usando C #, como se descobre qual processo bloqueou um arquivo?

No Windows, como eu determino (usando C #) qual processo bloqueou um arquivo?

Ferramentas de terceiros são úteis, mas não o que estou procurando.

Esta pergunta tinha uma resposta original que agora tem mais de 7 anos. Esse código é preservado em https://gist.github.com/ieb/2290426 Esta versão antiga pode funcionar para você se você precisar usar o Windows XP por algum motivo.

Uma resposta muito melhor é em Como verificar o bloqueio de arquivo?

Eu repliquei a resposta de Eric J abaixo (com o using instruções adicionadas e nomes de classs e methods para corresponder ao código antigo que estava aqui). Por favor, note que os comentários para esta resposta podem estar desatualizados.

Use como:

 List locks = Win32Processes.GetProcessesLockingFile(@"C:\Hello.docx"); 

Código:

 using System; using System.Collections.Generic; using System.Diagnostics; using System.Runtime.InteropServices; namespace FileLockInfo { public static class Win32Processes { ///  /// Find out what process(es) have a lock on the specified file. ///  /// Path of the file. /// Processes locking the file /// See also: /// http://msdn.microsoft.com/en-us/library/windows/desktop/aa373661(v=vs.85).aspx /// http://wyupdate.googlecode.com/svn-history/r401/trunk/frmFilesInUse.cs (no copyright in code at time of viewing) ///  public static List GetProcessesLockingFile(string path) { uint handle; string key = Guid.NewGuid().ToString(); int res = RmStartSession(out handle, 0, key); if (res != 0) throw new Exception("Could not begin restart session. Unable to determine file locker."); try { const int MORE_DATA = 234; uint pnProcInfoNeeded, pnProcInfo = 0, lpdwRebootReasons = RmRebootReasonNone; string[] resources = {path}; // Just checking on one resource. res = RmRegisterResources(handle, (uint) resources.Length, resources, 0, null, 0, null); if (res != 0) throw new Exception("Could not register resource."); //Note: there's a race condition here -- the first call to RmGetList() returns // the total number of process. However, when we call RmGetList() again to get // the actual processes this number may have increased. res = RmGetList(handle, out pnProcInfoNeeded, ref pnProcInfo, null, ref lpdwRebootReasons); if (res == MORE_DATA) { return EnumerateProcesses(pnProcInfoNeeded, handle, lpdwRebootReasons); } else if (res != 0) throw new Exception("Could not list processes locking resource. Failed to get size of result."); } finally { RmEndSession(handle); } return new List(); } [StructLayout(LayoutKind.Sequential)] public struct RM_UNIQUE_PROCESS { public int dwProcessId; public System.Runtime.InteropServices.ComTypes.FILETIME ProcessStartTime; } const int RmRebootReasonNone = 0; const int CCH_RM_MAX_APP_NAME = 255; const int CCH_RM_MAX_SVC_NAME = 63; public enum RM_APP_TYPE { RmUnknownApp = 0, RmMainWindow = 1, RmOtherWindow = 2, RmService = 3, RmExplorer = 4, RmConsole = 5, RmCritical = 1000 } [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)] public struct RM_PROCESS_INFO { public RM_UNIQUE_PROCESS Process; [MarshalAs(UnmanagedType.ByValTStr, SizeConst = CCH_RM_MAX_APP_NAME + 1)] public string strAppName; [MarshalAs(UnmanagedType.ByValTStr, SizeConst = CCH_RM_MAX_SVC_NAME + 1)] public string strServiceShortName; public RM_APP_TYPE ApplicationType; public uint AppStatus; public uint TSSessionId; [MarshalAs(UnmanagedType.Bool)] public bool bRestartable; } [DllImport("rstrtmgr.dll", CharSet = CharSet.Unicode)] static extern int RmRegisterResources(uint pSessionHandle, uint nFiles, string[] rgsFilenames, uint nApplications, [In] RM_UNIQUE_PROCESS[] rgApplications, uint nServices, string[] rgsServiceNames); [DllImport("rstrtmgr.dll", CharSet = CharSet.Auto)] static extern int RmStartSession(out uint pSessionHandle, int dwSessionFlags, string strSessionKey); [DllImport("rstrtmgr.dll")] static extern int RmEndSession(uint pSessionHandle); [DllImport("rstrtmgr.dll")] static extern int RmGetList(uint dwSessionHandle, out uint pnProcInfoNeeded, ref uint pnProcInfo, [In, Out] RM_PROCESS_INFO[] rgAffectedApps, ref uint lpdwRebootReasons); private static List EnumerateProcesses(uint pnProcInfoNeeded, uint handle, uint lpdwRebootReasons) { var processes = new List(10); // Create an array to store the process results var processInfo = new RM_PROCESS_INFO[pnProcInfoNeeded]; var pnProcInfo = pnProcInfoNeeded; // Get the list var res = RmGetList(handle, out pnProcInfoNeeded, ref pnProcInfo, processInfo, ref lpdwRebootReasons); if (res != 0) throw new Exception("Could not list processes locking resource."); for (int i = 0; i < pnProcInfo; i++) { try { processes.Add(Process.GetProcessById(processInfo[i].Process.dwProcessId)); } catch (ArgumentException) { } // catch the error -- in case the process is no longer running } return processes; } } } 

O código que encontrei aqui, https://vmccontroller.svn.codeplex.com/svn/VmcController/VmcServices/DetectOpenFiles.cs

Funciona para mim muito melhor que o código fornecido por Iain. O código de Iain parecia estar adquirindo um bloqueio próprio. Aqui está a minha versão ligeiramente modificada do código acima modificado para retornar o caminho da string dos arquivos bloqueados em vez do object FileSystemInfo,

 using System; using System.Collections.Generic; //using System.EnterpriseServices; using System.IO; using System.Runtime.CompilerServices; using System.Runtime.ConstrainedExecution; using System.Runtime.InteropServices; using System.Security.Permissions; using System.Text; using System.Threading; using Microsoft.Win32.SafeHandles; namespace Crmc.Core.BuildTasks { using System.Diagnostics; using System.Linq; #region ENUMs internal enum NT_STATUS { STATUS_SUCCESS = 0x00000000, STATUS_BUFFER_OVERFLOW = unchecked((int)0x80000005L), STATUS_INFO_LENGTH_MISMATCH = unchecked((int)0xC0000004L) } internal enum SYSTEM_INFORMATION_CLASS { SystemBasicInformation = 0, SystemPerformanceInformation = 2, SystemTimeOfDayInformation = 3, SystemProcessInformation = 5, SystemProcessorPerformanceInformation = 8, SystemHandleInformation = 16, SystemInterruptInformation = 23, SystemExceptionInformation = 33, SystemRegistryQuotaInformation = 37, SystemLookasideInformation = 45 } internal enum OBJECT_INFORMATION_CLASS { ObjectBasicInformation = 0, ObjectNameInformation = 1, ObjectTypeInformation = 2, ObjectAllTypesInformation = 3, ObjectHandleInformation = 4 } [Flags] internal enum ProcessAccessRights { PROCESS_DUP_HANDLE = 0x00000040 } [Flags] internal enum DuplicateHandleOptions { DUPLICATE_CLOSE_SOURCE = 0x1, DUPLICATE_SAME_ACCESS = 0x2 } #endregion [SecurityPermission(SecurityAction.LinkDemand, UnmanagedCode = true)] internal sealed class SafeObjectHandle : SafeHandleZeroOrMinusOneIsInvalid { private SafeObjectHandle() : base(true) { } internal SafeObjectHandle(IntPtr preexistingHandle, bool ownsHandle) : base(ownsHandle) { base.SetHandle(preexistingHandle); } protected override bool ReleaseHandle() { return NativeMethods.CloseHandle(base.handle); } } [SecurityPermission(SecurityAction.LinkDemand, UnmanagedCode = true)] internal sealed class SafeProcessHandle : SafeHandleZeroOrMinusOneIsInvalid { private SafeProcessHandle() : base(true) { } internal SafeProcessHandle(IntPtr preexistingHandle, bool ownsHandle) : base(ownsHandle) { base.SetHandle(preexistingHandle); } protected override bool ReleaseHandle() { return NativeMethods.CloseHandle(base.handle); } } #region Native Methods internal static class NativeMethods { [DllImport("ntdll.dll")] internal static extern NT_STATUS NtQuerySystemInformation( [In] SYSTEM_INFORMATION_CLASS SystemInformationClass, [In] IntPtr SystemInformation, [In] int SystemInformationLength, [Out] out int ReturnLength); [DllImport("ntdll.dll")] internal static extern NT_STATUS NtQueryObject( [In] IntPtr Handle, [In] OBJECT_INFORMATION_CLASS ObjectInformationClass, [In] IntPtr ObjectInformation, [In] int ObjectInformationLength, [Out] out int ReturnLength); [DllImport("kernel32.dll", SetLastError = true)] internal static extern SafeProcessHandle OpenProcess( [In] ProcessAccessRights dwDesiredAccess, [In, MarshalAs(UnmanagedType.Bool)] bool bInheritHandle, [In] int dwProcessId); [DllImport("kernel32.dll", SetLastError = true)] [return: MarshalAs(UnmanagedType.Bool)] internal static extern bool DuplicateHandle( [In] IntPtr hSourceProcessHandle, [In] IntPtr hSourceHandle, [In] IntPtr hTargetProcessHandle, [Out] out SafeObjectHandle lpTargetHandle, [In] int dwDesiredAccess, [In, MarshalAs(UnmanagedType.Bool)] bool bInheritHandle, [In] DuplicateHandleOptions dwOptions); [DllImport("kernel32.dll")] internal static extern IntPtr GetCurrentProcess(); [DllImport("kernel32.dll", SetLastError = true)] internal static extern int GetProcessId( [In] IntPtr Process); [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)] [DllImport("kernel32.dll", SetLastError = true)] [return: MarshalAs(UnmanagedType.Bool)] internal static extern bool CloseHandle( [In] IntPtr hObject); [DllImport("kernel32.dll", SetLastError = true)] internal static extern int QueryDosDevice( [In] string lpDeviceName, [Out] StringBuilder lpTargetPath, [In] int ucchMax); } #endregion //[ComVisible(true), EventTrackingEnabled(true)] public class DetectOpenFiles// : ServicedComponent { private static Dictionary deviceMap; private const string networkDevicePrefix = "\\Device\\LanmanRedirector\\"; private const int MAX_PATH = 260; private enum SystemHandleType { OB_TYPE_UNKNOWN = 0, OB_TYPE_TYPE = 1, OB_TYPE_DIRECTORY, OB_TYPE_SYMBOLIC_LINK, OB_TYPE_TOKEN, OB_TYPE_PROCESS, OB_TYPE_THREAD, OB_TYPE_UNKNOWN_7, OB_TYPE_EVENT, OB_TYPE_EVENT_PAIR, OB_TYPE_MUTANT, OB_TYPE_UNKNOWN_11, OB_TYPE_SEMAPHORE, OB_TYPE_TIMER, OB_TYPE_PROFILE, OB_TYPE_WINDOW_STATION, OB_TYPE_DESKTOP, OB_TYPE_SECTION, OB_TYPE_KEY, OB_TYPE_PORT, OB_TYPE_WAITABLE_PORT, OB_TYPE_UNKNOWN_21, OB_TYPE_UNKNOWN_22, OB_TYPE_UNKNOWN_23, OB_TYPE_UNKNOWN_24, //OB_TYPE_CONTROLLER, //OB_TYPE_DEVICE, //OB_TYPE_DRIVER, OB_TYPE_IO_COMPLETION, OB_TYPE_FILE }; private const int handleTypeTokenCount = 27; private static readonly string[] handleTypeTokens = new string[] { "", "", "Directory", "SymbolicLink", "Token", "Process", "Thread", "Unknown7", "Event", "EventPair", "Mutant", "Unknown11", "Semaphore", "Timer", "Profile", "WindowStation", "Desktop", "Section", "Key", "Port", "WaitablePort", "Unknown21", "Unknown22", "Unknown23", "Unknown24", "IoCompletion", "File" }; [StructLayout(LayoutKind.Sequential)] private struct SYSTEM_HANDLE_ENTRY { public int OwnerPid; public byte ObjectType; public byte HandleFlags; public short HandleValue; public int ObjectPointer; public int AccessMask; } ///  /// Gets the open files enumerator. ///  /// The process id. ///  public static IEnumerable GetOpenFilesEnumerator(int processId) { return new OpenFiles(processId); } public static List GetProcessesUsingFile(string fName) { List result = new List(); foreach (var p in Process.GetProcesses()) { try { if (DetectOpenFiles.GetOpenFilesEnumerator(p.Id).Contains(fName)) { result.Add(p); } } catch { }//some processes will fail } return result; } private sealed class OpenFiles : IEnumerable { private readonly int processId; internal OpenFiles(int processId) { this.processId = processId; } #region IEnumerable Members public IEnumerator GetEnumerator() { NT_STATUS ret; int length = 0x10000; // Loop, probing for required memory. do { IntPtr ptr = IntPtr.Zero; RuntimeHelpers.PrepareConstrainedRegions(); try { RuntimeHelpers.PrepareConstrainedRegions(); try { } finally { // CER guarantees that the address of the allocated // memory is actually assigned to ptr if an // asynchronous exception occurs. ptr = Marshal.AllocHGlobal(length); } int returnLength; ret = NativeMethods.NtQuerySystemInformation(SYSTEM_INFORMATION_CLASS.SystemHandleInformation, ptr, length, out returnLength); if (ret == NT_STATUS.STATUS_INFO_LENGTH_MISMATCH) { // Round required memory up to the nearest 64KB boundary. length = ((returnLength + 0xffff) & ~0xffff); } else if (ret == NT_STATUS.STATUS_SUCCESS) { int handleCount = Marshal.ReadInt32(ptr); int offset = sizeof(int); int size = Marshal.SizeOf(typeof(SYSTEM_HANDLE_ENTRY)); for (int i = 0; i < handleCount; i++) { SYSTEM_HANDLE_ENTRY handleEntry = (SYSTEM_HANDLE_ENTRY)Marshal.PtrToStructure((IntPtr)((int)ptr + offset), typeof(SYSTEM_HANDLE_ENTRY)); if (handleEntry.OwnerPid == processId) { IntPtr handle = (IntPtr)handleEntry.HandleValue; SystemHandleType handleType; if (GetHandleType(handle, handleEntry.OwnerPid, out handleType) && handleType == SystemHandleType.OB_TYPE_FILE) { string devicePath; if (GetFileNameFromHandle(handle, handleEntry.OwnerPid, out devicePath)) { string dosPath; if (ConvertDevicePathToDosPath(devicePath, out dosPath)) { if (File.Exists(dosPath)) { yield return dosPath; // return new FileInfo(dosPath); } else if (Directory.Exists(dosPath)) { yield return dosPath; // new DirectoryInfo(dosPath); } } } } } offset += size; } } } finally { // CER guarantees that the allocated memory is freed, // if an asynchronous exception occurs. Marshal.FreeHGlobal(ptr); //sw.Flush(); //sw.Close(); } } while (ret == NT_STATUS.STATUS_INFO_LENGTH_MISMATCH); } #endregion #region IEnumerable Members System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator() { return GetEnumerator(); } #endregion } #region Private Members private static bool GetFileNameFromHandle(IntPtr handle, int processId, out string fileName) { IntPtr currentProcess = NativeMethods.GetCurrentProcess(); bool remote = (processId != NativeMethods.GetProcessId(currentProcess)); SafeProcessHandle processHandle = null; SafeObjectHandle objectHandle = null; try { if (remote) { processHandle = NativeMethods.OpenProcess(ProcessAccessRights.PROCESS_DUP_HANDLE, true, processId); if (NativeMethods.DuplicateHandle(processHandle.DangerousGetHandle(), handle, currentProcess, out objectHandle, 0, false, DuplicateHandleOptions.DUPLICATE_SAME_ACCESS)) { handle = objectHandle.DangerousGetHandle(); } } return GetFileNameFromHandle(handle, out fileName, 200); } finally { if (remote) { if (processHandle != null) { processHandle.Close(); } if (objectHandle != null) { objectHandle.Close(); } } } } private static bool GetFileNameFromHandle(IntPtr handle, out string fileName, int wait) { using (FileNameFromHandleState f = new FileNameFromHandleState(handle)) { ThreadPool.QueueUserWorkItem(new WaitCallback(GetFileNameFromHandle), f); if (f.WaitOne(wait)) { fileName = f.FileName; return f.RetValue; } else { fileName = string.Empty; return false; } } } private class FileNameFromHandleState : IDisposable { private ManualResetEvent _mr; private IntPtr _handle; private string _fileName; private bool _retValue; public IntPtr Handle { get { return _handle; } } public string FileName { get { return _fileName; } set { _fileName = value; } } public bool RetValue { get { return _retValue; } set { _retValue = value; } } public FileNameFromHandleState(IntPtr handle) { _mr = new ManualResetEvent(false); this._handle = handle; } public bool WaitOne(int wait) { return _mr.WaitOne(wait, false); } public void Set() { try { _mr.Set(); } catch{} } #region IDisposable Members public void Dispose() { if (_mr != null) _mr.Close(); } #endregion } private static void GetFileNameFromHandle(object state) { FileNameFromHandleState s = (FileNameFromHandleState)state; string fileName; s.RetValue = GetFileNameFromHandle(s.Handle, out fileName); s.FileName = fileName; s.Set(); } private static bool GetFileNameFromHandle(IntPtr handle, out string fileName) { IntPtr ptr = IntPtr.Zero; RuntimeHelpers.PrepareConstrainedRegions(); try { int length = 0x200; // 512 bytes RuntimeHelpers.PrepareConstrainedRegions(); try { } finally { // CER guarantees the assignment of the allocated // memory address to ptr, if an ansynchronous exception // occurs. ptr = Marshal.AllocHGlobal(length); } NT_STATUS ret = NativeMethods.NtQueryObject(handle, OBJECT_INFORMATION_CLASS.ObjectNameInformation, ptr, length, out length); if (ret == NT_STATUS.STATUS_BUFFER_OVERFLOW) { RuntimeHelpers.PrepareConstrainedRegions(); try { } finally { // CER guarantees that the previous allocation is freed, // and that the newly allocated memory address is // assigned to ptr if an asynchronous exception occurs. Marshal.FreeHGlobal(ptr); ptr = Marshal.AllocHGlobal(length); } ret = NativeMethods.NtQueryObject(handle, OBJECT_INFORMATION_CLASS.ObjectNameInformation, ptr, length, out length); } if (ret == NT_STATUS.STATUS_SUCCESS) { fileName = Marshal.PtrToStringUni((IntPtr)((int)ptr + 8), (length - 9) / 2); return fileName.Length != 0; } } finally { // CER guarantees that the allocated memory is freed, // if an asynchronous exception occurs. Marshal.FreeHGlobal(ptr); } fileName = string.Empty; return false; } private static bool GetHandleType(IntPtr handle, int processId, out SystemHandleType handleType) { string token = GetHandleTypeToken(handle, processId); return GetHandleTypeFromToken(token, out handleType); } private static bool GetHandleType(IntPtr handle, out SystemHandleType handleType) { string token = GetHandleTypeToken(handle); return GetHandleTypeFromToken(token, out handleType); } private static bool GetHandleTypeFromToken(string token, out SystemHandleType handleType) { for (int i = 1; i < handleTypeTokenCount; i++) { if (handleTypeTokens[i] == token) { handleType = (SystemHandleType)i; return true; } } handleType = SystemHandleType.OB_TYPE_UNKNOWN; return false; } private static string GetHandleTypeToken(IntPtr handle, int processId) { IntPtr currentProcess = NativeMethods.GetCurrentProcess(); bool remote = (processId != NativeMethods.GetProcessId(currentProcess)); SafeProcessHandle processHandle = null; SafeObjectHandle objectHandle = null; try { if (remote) { processHandle = NativeMethods.OpenProcess(ProcessAccessRights.PROCESS_DUP_HANDLE, true, processId); if (NativeMethods.DuplicateHandle(processHandle.DangerousGetHandle(), handle, currentProcess, out objectHandle, 0, false, DuplicateHandleOptions.DUPLICATE_SAME_ACCESS)) { handle = objectHandle.DangerousGetHandle(); } } return GetHandleTypeToken(handle); } finally { if (remote) { if (processHandle != null) { processHandle.Close(); } if (objectHandle != null) { objectHandle.Close(); } } } } private static string GetHandleTypeToken(IntPtr handle) { int length; NativeMethods.NtQueryObject(handle, OBJECT_INFORMATION_CLASS.ObjectTypeInformation, IntPtr.Zero, 0, out length); IntPtr ptr = IntPtr.Zero; RuntimeHelpers.PrepareConstrainedRegions(); try { RuntimeHelpers.PrepareConstrainedRegions(); try { } finally { ptr = Marshal.AllocHGlobal(length); } if (NativeMethods.NtQueryObject(handle, OBJECT_INFORMATION_CLASS.ObjectTypeInformation, ptr, length, out length) == NT_STATUS.STATUS_SUCCESS) { return Marshal.PtrToStringUni((IntPtr)((int)ptr + 0x60)); } } finally { Marshal.FreeHGlobal(ptr); } return string.Empty; } private static bool ConvertDevicePathToDosPath(string devicePath, out string dosPath) { EnsureDeviceMap(); int i = devicePath.Length; while (i > 0 && (i = devicePath.LastIndexOf('\\', i - 1)) != -1) { string drive; if (deviceMap.TryGetValue(devicePath.Substring(0, i), out drive)) { dosPath = string.Concat(drive, devicePath.Substring(i)); return dosPath.Length != 0; } } dosPath = string.Empty; return false; } private static void EnsureDeviceMap() { if (deviceMap == null) { Dictionary localDeviceMap = BuildDeviceMap(); Interlocked.CompareExchange>(ref deviceMap, localDeviceMap, null); } } private static Dictionary BuildDeviceMap() { string[] logicalDrives = Environment.GetLogicalDrives(); Dictionary localDeviceMap = new Dictionary(logicalDrives.Length); StringBuilder lpTargetPath = new StringBuilder(MAX_PATH); foreach (string drive in logicalDrives) { string lpDeviceName = drive.Substring(0, 2); NativeMethods.QueryDosDevice(lpDeviceName, lpTargetPath, MAX_PATH); localDeviceMap.Add(NormalizeDeviceName(lpTargetPath.ToString()), lpDeviceName); } localDeviceMap.Add(networkDevicePrefix.Substring(0, networkDevicePrefix.Length - 1), "\\"); return localDeviceMap; } private static string NormalizeDeviceName(string deviceName) { if (string.Compare(deviceName, 0, networkDevicePrefix, 0, networkDevicePrefix.Length, StringComparison.InvariantCulture) == 0) { string shareName = deviceName.Substring(deviceName.IndexOf('\\', networkDevicePrefix.Length) + 1); return string.Concat(networkDevicePrefix, shareName); } return deviceName; } #endregion } } 

Não é muito simples, mas no Windows Vista e acima você pode usar as APIs do Restart Manager para ver quem está usando um arquivo. Configurações de caches do Internet Explorer inclui detalhes sobre como usar isso para detectar qual processo tem iexplore.exe aberto.

Omitindo muitos detalhes:

 // Start an RM session RmStartSession(&sessionHandle, 0, sessionKey); // Register the file you are checking RmRegisterResources(sessionHandle, 1, filePathArray, 0, NULL, 0, NULL); // Get all processes that have that file open. RmGetList(sessionHAndle, &nProcInfoNeeded, &nProcInfo, processes, &rebootReason); RmEndSession(sessionHandle); 

Identificador , do Windows Sysinternals . Este é um utilitário de linha de comando gratuito fornecido pela Microsoft.

Você poderia executá-lo e analisar o resultado.

O seguinte foi produzido com base no despejo de código de Iain Ballard. Está quebrado : ele será ocasionalmente bloqueado quando você recuperar o nome do manipulador. Esse código não contém nenhuma Thread.Abort alternativa para esse problema, e o .NET deixa poucas opções: O Thread.Abort não pode mais anular um thread que esteja atualmente em um método nativo.

Portanto, com esse aviso, aqui está o código para recuperar identificadores que foram adaptados para funcionar (exceto o bloqueio ocasional) nos modos de 32 e 64 bits:

 using System; using System.Collections.Generic; using System.Linq; using System.Runtime.ConstrainedExecution; using System.Runtime.InteropServices; namespace BrokenHandleRetrieval { class Program { static void Main(string[] args) { Console.WriteLine("Enumerates open handles."); Console.WriteLine("This *will* lock up on calling HandleInfo.Name from time to time. Thread.Abort() won't help."); foreach (var hi in HandleUtil.GetHandles().Where(hi => hi.Type == HandleType.File)) Console.WriteLine("pid: " + hi.ProcessId + ", name: " + hi.Name); } } public enum HandleType { Unknown, Other, File, Directory, SymbolicLink, Key, Process, Thread, Job, Session, WindowStation, Timer, Desktop, Semaphore, Token, Mutant, Section, Event, KeyedEvent, IoCompletion, IoCompletionReserve, TpWorkerFactory, AlpcPort, WmiGuid, UserApcReserve, } public class HandleInfo { public int ProcessId { get; private set; } public ushort Handle { get; private set; } public int GrantedAccess { get; private set; } public byte RawType { get; private set; } public HandleInfo(int processId, ushort handle, int grantedAccess, byte rawType) { ProcessId = processId; Handle = handle; GrantedAccess = grantedAccess; RawType = rawType; } private static Dictionary _rawTypeMap = new Dictionary(); private string _name, _typeStr; private HandleType _type; public string Name { get { if (_name == null) initTypeAndName(); return _name; } } public string TypeString { get { if (_typeStr == null) initType(); return _typeStr; } } public HandleType Type { get { if (_typeStr == null) initType(); return _type; } } private void initType() { if (_rawTypeMap.ContainsKey(RawType)) { _typeStr = _rawTypeMap[RawType]; _type = HandleTypeFromString(_typeStr); } else initTypeAndName(); } bool _typeAndNameAttempted = false; private void initTypeAndName() { if (_typeAndNameAttempted) return; _typeAndNameAttempted = true; IntPtr sourceProcessHandle = IntPtr.Zero; IntPtr handleDuplicate = IntPtr.Zero; try { sourceProcessHandle = NativeMethods.OpenProcess(0x40 /* dup_handle */, true, ProcessId); // To read info about a handle owned by another process we must duplicate it into ours // For simplicity, current process handles will also get duplicated; remember that process handles cannot be compared for equality if (!NativeMethods.DuplicateHandle(sourceProcessHandle, (IntPtr) Handle, NativeMethods.GetCurrentProcess(), out handleDuplicate, 0, false, 2 /* same_access */)) return; // Query the object type if (_rawTypeMap.ContainsKey(RawType)) _typeStr = _rawTypeMap[RawType]; else { int length; NativeMethods.NtQueryObject(handleDuplicate, OBJECT_INFORMATION_CLASS.ObjectTypeInformation, IntPtr.Zero, 0, out length); IntPtr ptr = IntPtr.Zero; try { ptr = Marshal.AllocHGlobal(length); if (NativeMethods.NtQueryObject(handleDuplicate, OBJECT_INFORMATION_CLASS.ObjectTypeInformation, ptr, length, out length) != NT_STATUS.STATUS_SUCCESS) return; _typeStr = Marshal.PtrToStringUni((IntPtr) ((int) ptr + 0x58 + 2 * IntPtr.Size)); _rawTypeMap[RawType] = _typeStr; } finally { Marshal.FreeHGlobal(ptr); } } _type = HandleTypeFromString(_typeStr); // Query the object name if (_typeStr != null && GrantedAccess != 0x0012019f && GrantedAccess != 0x00120189 && GrantedAccess != 0x120089) // don't query some objects that could get stuck { int length; NativeMethods.NtQueryObject(handleDuplicate, OBJECT_INFORMATION_CLASS.ObjectNameInformation, IntPtr.Zero, 0, out length); IntPtr ptr = IntPtr.Zero; try { ptr = Marshal.AllocHGlobal(length); if (NativeMethods.NtQueryObject(handleDuplicate, OBJECT_INFORMATION_CLASS.ObjectNameInformation, ptr, length, out length) != NT_STATUS.STATUS_SUCCESS) return; _name = Marshal.PtrToStringUni((IntPtr) ((int) ptr + 2 * IntPtr.Size)); } finally { Marshal.FreeHGlobal(ptr); } } } finally { NativeMethods.CloseHandle(sourceProcessHandle); if (handleDuplicate != IntPtr.Zero) NativeMethods.CloseHandle(handleDuplicate); } } public static HandleType HandleTypeFromString(string typeStr) { switch (typeStr) { case null: return HandleType.Unknown; case "File": return HandleType.File; case "IoCompletion": return HandleType.IoCompletion; case "TpWorkerFactory": return HandleType.TpWorkerFactory; case "ALPC Port": return HandleType.AlpcPort; case "Event": return HandleType.Event; case "Section": return HandleType.Section; case "Directory": return HandleType.Directory; case "KeyedEvent": return HandleType.KeyedEvent; case "Process": return HandleType.Process; case "Key": return HandleType.Key; case "SymbolicLink": return HandleType.SymbolicLink; case "Thread": return HandleType.Thread; case "Mutant": return HandleType.Mutant; case "WindowStation": return HandleType.WindowStation; case "Timer": return HandleType.Timer; case "Semaphore": return HandleType.Semaphore; case "Desktop": return HandleType.Desktop; case "Token": return HandleType.Token; case "Job": return HandleType.Job; case "Session": return HandleType.Session; case "IoCompletionReserve": return HandleType.IoCompletionReserve; case "WmiGuid": return HandleType.WmiGuid; case "UserApcReserve": return HandleType.UserApcReserve; default: return HandleType.Other; } } } public static class HandleUtil { public static IEnumerable GetHandles() { // Attempt to retrieve the handle information int length = 0x10000; IntPtr ptr = IntPtr.Zero; try { while (true) { ptr = Marshal.AllocHGlobal(length); int wantedLength; var result = NativeMethods.NtQuerySystemInformation(SYSTEM_INFORMATION_CLASS.SystemHandleInformation, ptr, length, out wantedLength); if (result == NT_STATUS.STATUS_INFO_LENGTH_MISMATCH) { length = Math.Max(length, wantedLength); Marshal.FreeHGlobal(ptr); ptr = IntPtr.Zero; } else if (result == NT_STATUS.STATUS_SUCCESS) break; else throw new Exception("Failed to retrieve system handle information."); } int handleCount = IntPtr.Size == 4 ? Marshal.ReadInt32(ptr) : (int) Marshal.ReadInt64(ptr); int offset = IntPtr.Size; int size = Marshal.SizeOf(typeof(SystemHandleEntry)); for (int i = 0; i < handleCount; i++) { var struc = (SystemHandleEntry) Marshal.PtrToStructure((IntPtr) ((int) ptr + offset), typeof(SystemHandleEntry)); yield return new HandleInfo(struc.OwnerProcessId, struc.Handle, struc.GrantedAccess, struc.ObjectTypeNumber); offset += size; } } finally { if (ptr != IntPtr.Zero) Marshal.FreeHGlobal(ptr); } } [StructLayout(LayoutKind.Sequential)] private struct SystemHandleEntry { public int OwnerProcessId; public byte ObjectTypeNumber; public byte Flags; public ushort Handle; public IntPtr Object; public int GrantedAccess; } } enum NT_STATUS { STATUS_SUCCESS = 0x00000000, STATUS_BUFFER_OVERFLOW = unchecked((int) 0x80000005L), STATUS_INFO_LENGTH_MISMATCH = unchecked((int) 0xC0000004L) } enum SYSTEM_INFORMATION_CLASS { SystemBasicInformation = 0, SystemPerformanceInformation = 2, SystemTimeOfDayInformation = 3, SystemProcessInformation = 5, SystemProcessorPerformanceInformation = 8, SystemHandleInformation = 16, SystemInterruptInformation = 23, SystemExceptionInformation = 33, SystemRegistryQuotaInformation = 37, SystemLookasideInformation = 45 } enum OBJECT_INFORMATION_CLASS { ObjectBasicInformation = 0, ObjectNameInformation = 1, ObjectTypeInformation = 2, ObjectAllTypesInformation = 3, ObjectHandleInformation = 4 } static class NativeMethods { [DllImport("ntdll.dll")] internal static extern NT_STATUS NtQuerySystemInformation( [In] SYSTEM_INFORMATION_CLASS SystemInformationClass, [In] IntPtr SystemInformation, [In] int SystemInformationLength, [Out] out int ReturnLength); [DllImport("ntdll.dll")] internal static extern NT_STATUS NtQueryObject( [In] IntPtr Handle, [In] OBJECT_INFORMATION_CLASS ObjectInformationClass, [In] IntPtr ObjectInformation, [In] int ObjectInformationLength, [Out] out int ReturnLength); [DllImport("kernel32.dll")] internal static extern IntPtr GetCurrentProcess(); [DllImport("kernel32.dll", SetLastError = true)] public static extern IntPtr OpenProcess( [In] int dwDesiredAccess, [In, MarshalAs(UnmanagedType.Bool)] bool bInheritHandle, [In] int dwProcessId); [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)] [DllImport("kernel32.dll", SetLastError = true)] [return: MarshalAs(UnmanagedType.Bool)] internal static extern bool CloseHandle( [In] IntPtr hObject); [DllImport("kernel32.dll", SetLastError = true)] [return: MarshalAs(UnmanagedType.Bool)] public static extern bool DuplicateHandle( [In] IntPtr hSourceProcessHandle, [In] IntPtr hSourceHandle, [In] IntPtr hTargetProcessHandle, [Out] out IntPtr lpTargetHandle, [In] int dwDesiredAccess, [In, MarshalAs(UnmanagedType.Bool)] bool bInheritHandle, [In] int dwOptions); } } 

Experimente o Unlocker . Se você tentar excluir o arquivo bloqueado por outro processo, ele listará o (s) processo (s) com o arquivo bloqueado. Você pode desbloquear o arquivo fechando esses processos.

Eu acredito que você precisa de código rodando no modo kernel para responder completamente a questão (mas eu não olhei para a API do gerenciador de reboot).

Você pode enumerar todos os processos e seus módulos – portanto, se o arquivo que você está procurando for um módulo (DLL, EXE, OCX …), você está pronto para começar. Mas se for um arquivo de texto, por exemplo, você deve examinar a tabela de manipulação de kernel que não pode ser vista no modo de usuário. Handle.exe tem um driver de kernel para fazer isso.

Você absolutamente não precisa executar no modo Kernel (!!!)
É um FAQ do Win32 desde o Windows 95 (!) (Em C, grupos do Google, Win32): leia a tabela de manuseio, no modo User, é claro, e obtenha o PID do manipulador de arquivos …

Eu reescrevo o método GetProcessesLockingFile () na solução. O código não estava funcionando. Por exemplo, você tem uma pasta "C:\folder1\folder2" e um processo na pasta2 (process1). Se o processo estava em execução, GetProcessesLockingFile () estava me retornando "C:\folder1\folder2" . Portanto, a condição if (files.Contains(filePath)) => if ("C:\folder1\folder2".contains("C:\folder1\folder2\process1")) nunca foi verdadeira.

Então esta é minha solução:

 public static List GetProcessesLockingFile(FileInfo file) { var procs = new List(); var processListSnapshot = Process.GetProcesses(); foreach (var process in processListSnapshot) { if (process.Id <= 4) { continue; } // system processes List paths = GetFilesLockedBy(process); foreach (string path in paths) { string pathDirectory = path; if (!pathDirectory.EndsWith(Constants.DOUBLE_BACKSLASH)) { pathDirectory = pathDirectory + Constants.DOUBLE_BACKSLASH; } string lastFolderName = Path.GetFileName(Path.GetDirectoryName(pathDirectory)); if (file.FullName.Contains(lastFolderName)) { procs.Add(process); } } } return procs; } 

Or with a string parameter:

 public static List GetProcessesLockingFile(string filePath) { var procs = new List(); var processListSnapshot = Process.GetProcesses(); foreach (var process in processListSnapshot) { if (process.Id <= 4) { continue; } // system processes List paths = GetFilesLockedBy(process); foreach (string path in paths) { string pathDirectory = path; if (!pathDirectory.EndsWith(Constants.DOUBLE_BACKSLASH)) { pathDirectory = pathDirectory + Constants.DOUBLE_BACKSLASH; } string lastFolderName = Path.GetFileName(Path.GetDirectoryName(pathDirectory)); if (filePath.Contains(lastFolderName)) { procs.Add(process); } } } return procs; }