Usando C #, ¿cómo se puede averiguar qué proceso bloqueó un archivo?

En Windows, ¿cómo determino (usando C #) qué proceso bloqueó un archivo?

Las herramientas de terceros son útiles, pero no lo que estoy buscando.

Esta pregunta tenía una respuesta original que ahora tiene más de 7 años. Ese código se conserva en https://gist.github.com/ieb/2290426 Esta versión anterior podría funcionar para usted si necesita usar Windows XP por algún motivo.

Una respuesta mucho mejor es ¿Cómo verificar el locking de archivos?

He replicado la respuesta de Eric J a continuación (con el using declaraciones agregadas, y nombres de clase y método para que coincida con el código anterior que estaba aquí) Tenga en cuenta que los comentarios a esta respuesta pueden estar desactualizados.

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; } } } 

El código que encontré aquí, https://vmccontroller.svn.codeplex.com/svn/VmcController/VmcServices/DetectOpenFiles.cs

Funciona para mí mucho mejor que el código proporcionado por Iain. El código de Iain parecía estar adquiriendo un locking propio. Aquí está mi versión ligeramente modificada del código modificado anteriormente para devolver la ruta de acceso de la cadena de los archivos bloqueados en lugar del objeto 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 } } 

No es muy sencillo, pero en Windows Vista y en las versiones anteriores puede usar las API de Restart Manager para ver quién está usando un archivo. La configuración de caché de Internet Explorer incluye detalles sobre cómo usar esto para detectar qué proceso tiene abierto iexplore.exe .

Omitiendo muchos detalles:

 // 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); 

Handle , desde Windows Sysinternals . Esta es una utilidad gratuita de línea de comandos proporcionada por Microsoft.

Podrías ejecutarlo y analizar el resultado.

Lo siguiente fue producido basado en el volcado de código de Iain Ballard. Está roto : de vez en cuando se bloqueará cuando recupere el nombre del controlador. Este código no contiene ninguna solución alternativa para ese problema, y ​​.NET deja pocas opciones: Thread.Abort ya no puede abortar un hilo que está actualmente en un método nativo.

Entonces, con esa exención de responsabilidad, aquí está el código para recuperar identificadores que se han adaptado para funcionar (aparte del locking ocasional) en modos de 32 y 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); } } 

Prueba Unlocker . Si intentas eliminar el archivo que está bloqueado por otro proceso, mostrará una lista de los procesos que tienen el archivo bloqueado. A continuación, puede desbloquear el archivo al cerrar esos procesos.

Creo que necesita código que se ejecute en modo kernel para responder completamente la pregunta (pero no he consultado la API del administrador de reinicios).

Puede enumerar todos los procesos y sus módulos, de modo que si el archivo que está buscando es un módulo (DLL, EXE, OCX …), ya está listo. Pero si se trata de un archivo de texto, por ejemplo, debe mirar la tabla de manejo del núcleo que no puede ver desde el modo de usuario. Handle.exe tiene un controlador de núcleo para hacer eso.

¡No necesita ejecutar en modo kernel (!!!)
Es una pregunta frecuente de Win32 desde Windows 95 (!) (En C, grupos de Google, Win32): lea la tabla de manejo, desde el modo de Usuario, por supuesto, y obtenga el PID desde el manejador de Archivo …

Reescribo el método GetProcessesLockingFile () en la solución. El código no funcionaba Por ejemplo, tiene una carpeta "C:\folder1\folder2" y un proceso en carpeta2 (proceso1). Si el proceso se estaba ejecutando, GetProcessesLockingFile () me estaba devolviendo "C:\folder1\folder2" . Entonces la condición if (files.Contains(filePath)) => if ("C:\folder1\folder2".contains("C:\folder1\folder2\process1")) nunca fue verdadera.

Entonces esta es mi solución:

 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; } 

O con un parámetro de cadena:

 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; }