Windows, nasıl belirleyebilirim (C# kullanarak) süreci bir dosya kilitli?

Üçüncü taraf araçlar arıyorum ne yararlı, ama değil.

Lütfen kod dökümü büyük bahane, ama burada bunu yapmak için küçük bir sınıf. Ve Windows Server 2003 (yalnızca iki ben şimdiye kadar test ettik) Windows 7 üzerinde çalışıyor, ve iş parçacığı bazı kötü Win32 böceklere karşı korumak için kullanır. Genelde internette buldum.

Güncelleme birkaç yönetilen bir bellek özel durumları önlemek için. Win32 böcekler çok iş parçacığı arka plan çıkarken süreci durmayacak. Bu da bir Özü olarak kullanılabilir. Eğer herhangi bir yenilik varsa, lütfen https://gist.github.com/i-e-b/2290426 onları gönderin

using System;
using System.Collections.Generic;
using System.Runtime.InteropServices;
using System.Diagnostics;
using System.Text;
using System.Threading;

namespace FileLockInfo
{
    public class Win32Processes
    {
        /// <summary>
        /// Return a list of processes that hold on the given file.
        /// </summary>
        public static List<Process> GetProcessesLockingFile(string filePath)
        {
            var procs = new List<Process>();

            var processListSnapshot = Process.GetProcesses();
            foreach (var process in processListSnapshot)
            {
                if (process.Id <= 4) { continue; } // system processes
                var files = GetFilesLockedBy(process);
                if (files.Contains(filePath)) procs.Add(process);
            }
            return procs;
        }

        /// <summary>
        /// Return a list of file locks held by the process.
        /// </summary>
        public static List<string> GetFilesLockedBy(Process process)
        {
            var outp = new List<string>();

            ThreadStart ts = delegate
            {
                try
                {
                    outp = UnsafeGetFilesLockedBy(process);
                }
                catch { Ignore(); }
            };

            try
            {
                var t = new Thread(ts);
                t.IsBackground = true;
                t.Start();
                if (!t.Join(250))
                {
                    try
                    {
                        t.Interrupt();
                        t.Abort();
                    }
                    catch { Ignore(); }
                }
            }
            catch { Ignore(); }

            return outp;
        }


        #region Inner Workings
        private static void Ignore() { }
        private static List<string> UnsafeGetFilesLockedBy(Process process)
        {
            try
            {
                var handles = GetHandles(process);
                var files = new List<string>();

                foreach (var handle in handles)
                {
                    var file = GetFilePath(handle, process);
                    if (file != null) files.Add(file);
                }

                return files;
            }
            catch
            {
                return new List<string>();
            }
        }

        const int CNST_SYSTEM_HANDLE_INFORMATION = 16;
        private static string GetFilePath(Win32API.SYSTEM_HANDLE_INFORMATION systemHandleInformation, Process process)
        {
            var ipProcessHwnd = Win32API.OpenProcess(Win32API.ProcessAccessFlags.All, false, process.Id);
            var objBasic = new Win32API.OBJECT_BASIC_INFORMATION();
            var objObjectType = new Win32API.OBJECT_TYPE_INFORMATION();
            var objObjectName = new Win32API.OBJECT_NAME_INFORMATION();
            var strObjectName = "";
            var nLength = 0;
            IntPtr ipTemp, ipHandle;

            if (!Win32API.DuplicateHandle(ipProcessHwnd, systemHandleInformation.Handle, Win32API.GetCurrentProcess(), out ipHandle, 0, false, Win32API.DUPLICATE_SAME_ACCESS))
                return null;

            IntPtr ipBasic = Marshal.AllocHGlobal(Marshal.SizeOf(objBasic));
            Win32API.NtQueryObject(ipHandle, (int)Win32API.ObjectInformationClass.ObjectBasicInformation, ipBasic, Marshal.SizeOf(objBasic), ref nLength);
            objBasic = (Win32API.OBJECT_BASIC_INFORMATION)Marshal.PtrToStructure(ipBasic, objBasic.GetType());
            Marshal.FreeHGlobal(ipBasic);

            IntPtr ipObjectType = Marshal.AllocHGlobal(objBasic.TypeInformationLength);
            nLength = objBasic.TypeInformationLength;
            // this one never locks...
            while ((uint)(Win32API.NtQueryObject(ipHandle, (int)Win32API.ObjectInformationClass.ObjectTypeInformation, ipObjectType, nLength, ref nLength)) == Win32API.STATUS_INFO_LENGTH_MISMATCH)
            {
                if (nLength == 0)
                {
                    Console.WriteLine("nLength returned at zero! ");
                    return null;
                }
                Marshal.FreeHGlobal(ipObjectType);
                ipObjectType = Marshal.AllocHGlobal(nLength);
            }

            objObjectType = (Win32API.OBJECT_TYPE_INFORMATION)Marshal.PtrToStructure(ipObjectType, objObjectType.GetType());
            if (Is64Bits())
            {
                ipTemp = new IntPtr(Convert.ToInt64(objObjectType.Name.Buffer.ToString(), 10) >> 32);
            }
            else
            {
                ipTemp = objObjectType.Name.Buffer;
            }

            var strObjectTypeName = Marshal.PtrToStringUni(ipTemp, objObjectType.Name.Length >> 1);
            Marshal.FreeHGlobal(ipObjectType);
            if (strObjectTypeName != "File")
                return null;

            nLength = objBasic.NameInformationLength;

            var ipObjectName = Marshal.AllocHGlobal(nLength);

            // ...this call sometimes hangs. Is a Windows error.
            while ((uint)(Win32API.NtQueryObject(ipHandle, (int)Win32API.ObjectInformationClass.ObjectNameInformation, ipObjectName, nLength, ref nLength)) == Win32API.STATUS_INFO_LENGTH_MISMATCH)
            {
                Marshal.FreeHGlobal(ipObjectName);
                if (nLength == 0)
                {
                    Console.WriteLine("nLength returned at zero! "   strObjectTypeName);
                    return null;
                }
                ipObjectName = Marshal.AllocHGlobal(nLength);
            }
            objObjectName = (Win32API.OBJECT_NAME_INFORMATION)Marshal.PtrToStructure(ipObjectName, objObjectName.GetType());

            if (Is64Bits())
            {
                ipTemp = new IntPtr(Convert.ToInt64(objObjectName.Name.Buffer.ToString(), 10) >> 32);
            }
            else
            {
                ipTemp = objObjectName.Name.Buffer;
            }

            if (ipTemp != IntPtr.Zero)
            {

                var baTemp = new byte[nLength];
                try
                {
                    Marshal.Copy(ipTemp, baTemp, 0, nLength);

                    strObjectName = Marshal.PtrToStringUni(Is64Bits() ? new IntPtr(ipTemp.ToInt64()) : new IntPtr(ipTemp.ToInt32()));
                }
                catch (AccessViolationException)
                {
                    return null;
                }
                finally
                {
                    Marshal.FreeHGlobal(ipObjectName);
                    Win32API.CloseHandle(ipHandle);
                }
            }

            string path = GetRegularFileNameFromDevice(strObjectName);
            try
            {
                return path;
            }
            catch
            {
                return null;
            }
        }

        private static string GetRegularFileNameFromDevice(string strRawName)
        {
            string strFileName = strRawName;
            foreach (string strDrivePath in Environment.GetLogicalDrives())
            {
                var sbTargetPath = new StringBuilder(Win32API.MAX_PATH);
                if (Win32API.QueryDosDevice(strDrivePath.Substring(0, 2), sbTargetPath, Win32API.MAX_PATH) == 0)
                {
                    return strRawName;
                }
                string strTargetPath = sbTargetPath.ToString();
                if (strFileName.StartsWith(strTargetPath))
                {
                    strFileName = strFileName.Replace(strTargetPath, strDrivePath.Substring(0, 2));
                    break;
                }
            }
            return strFileName;
        }

        private static IEnumerable<Win32API.SYSTEM_HANDLE_INFORMATION> GetHandles(Process process)
        {
            var nHandleInfoSize = 0x10000;
            var ipHandlePointer = Marshal.AllocHGlobal(nHandleInfoSize);
            var nLength = 0;
            IntPtr ipHandle;

            while (Win32API.NtQuerySystemInformation(CNST_SYSTEM_HANDLE_INFORMATION, ipHandlePointer, nHandleInfoSize, ref nLength) == Win32API.STATUS_INFO_LENGTH_MISMATCH)
            {
                nHandleInfoSize = nLength;
                Marshal.FreeHGlobal(ipHandlePointer);
                ipHandlePointer = Marshal.AllocHGlobal(nLength);
            }

            var baTemp = new byte[nLength];
            Marshal.Copy(ipHandlePointer, baTemp, 0, nLength);

            long lHandleCount;
            if (Is64Bits())
            {
                lHandleCount = Marshal.ReadInt64(ipHandlePointer);
                ipHandle = new IntPtr(ipHandlePointer.ToInt64()   8);
            }
            else
            {
                lHandleCount = Marshal.ReadInt32(ipHandlePointer);
                ipHandle = new IntPtr(ipHandlePointer.ToInt32()   4);
            }

            var lstHandles = new List<Win32API.SYSTEM_HANDLE_INFORMATION>();

            for (long lIndex = 0; lIndex < lHandleCount; lIndex  )
            {
                var shHandle = new Win32API.SYSTEM_HANDLE_INFORMATION();
                if (Is64Bits())
                {
                    shHandle = (Win32API.SYSTEM_HANDLE_INFORMATION)Marshal.PtrToStructure(ipHandle, shHandle.GetType());
                    ipHandle = new IntPtr(ipHandle.ToInt64()   Marshal.SizeOf(shHandle)   8);
                }
                else
                {
                    ipHandle = new IntPtr(ipHandle.ToInt64()   Marshal.SizeOf(shHandle));
                    shHandle = (Win32API.SYSTEM_HANDLE_INFORMATION)Marshal.PtrToStructure(ipHandle, shHandle.GetType());
                }
                if (shHandle.ProcessID != process.Id) continue;
                lstHandles.Add(shHandle);
            }
            return lstHandles;
        }

        private static bool Is64Bits()
        {
            return Marshal.SizeOf(typeof(IntPtr)) == 8;
        }

        internal class Win32API
        {
            [DllImport("ntdll.dll")]
            public static extern int NtQueryObject(IntPtr ObjectHandle, int
                ObjectInformationClass, IntPtr ObjectInformation, int ObjectInformationLength,
                ref int returnLength);

            [DllImport("kernel32.dll", SetLastError = true)]
            public static extern uint QueryDosDevice(string lpDeviceName, StringBuilder lpTargetPath, int ucchMax);

            [DllImport("ntdll.dll")]
            public static extern uint NtQuerySystemInformation(int
                SystemInformationClass, IntPtr SystemInformation, int SystemInformationLength,
                ref int returnLength);

            [DllImport("kernel32.dll")]
            public static extern IntPtr OpenProcess(ProcessAccessFlags dwDesiredAccess, [MarshalAs(UnmanagedType.Bool)] bool bInheritHandle, int dwProcessId);
            [DllImport("kernel32.dll")]
            public static extern int CloseHandle(IntPtr hObject);
            [DllImport("kernel32.dll", SetLastError = true)]
            [return: MarshalAs(UnmanagedType.Bool)]
            public static extern bool DuplicateHandle(IntPtr hSourceProcessHandle,
               ushort hSourceHandle, IntPtr hTargetProcessHandle, out IntPtr lpTargetHandle,
               uint dwDesiredAccess, [MarshalAs(UnmanagedType.Bool)] bool bInheritHandle, uint dwOptions);
            [DllImport("kernel32.dll")]
            public static extern IntPtr GetCurrentProcess();

            public enum ObjectInformationClass
            {
                ObjectBasicInformation = 0,
                ObjectNameInformation = 1,
                ObjectTypeInformation = 2,
                ObjectAllTypesInformation = 3,
                ObjectHandleInformation = 4
            }

            [Flags]
            public enum ProcessAccessFlags : uint
            {
                All = 0x001F0FFF,
                Terminate = 0x00000001,
                CreateThread = 0x00000002,
                VMOperation = 0x00000008,
                VMRead = 0x00000010,
                VMWrite = 0x00000020,
                DupHandle = 0x00000040,
                SetInformation = 0x00000200,
                QueryInformation = 0x00000400,
                Synchronize = 0x00100000
            }

            [StructLayout(LayoutKind.Sequential)]
            public struct OBJECT_BASIC_INFORMATION
            { // Information Class 0
                public int Attributes;
                public int GrantedAccess;
                public int HandleCount;
                public int PointerCount;
                public int PagedPoolUsage;
                public int NonPagedPoolUsage;
                public int Reserved1;
                public int Reserved2;
                public int Reserved3;
                public int NameInformationLength;
                public int TypeInformationLength;
                public int SecurityDescriptorLength;
                public System.Runtime.InteropServices.ComTypes.FILETIME CreateTime;
            }

            [StructLayout(LayoutKind.Sequential)]
            public struct OBJECT_TYPE_INFORMATION
            { // Information Class 2
                public UNICODE_STRING Name;
                public int ObjectCount;
                public int HandleCount;
                public int Reserved1;
                public int Reserved2;
                public int Reserved3;
                public int Reserved4;
                public int PeakObjectCount;
                public int PeakHandleCount;
                public int Reserved5;
                public int Reserved6;
                public int Reserved7;
                public int Reserved8;
                public int InvalidAttributes;
                public GENERIC_MAPPING GenericMapping;
                public int ValidAccess;
                public byte Unknown;
                public byte MaintainHandleDatabase;
                public int PoolType;
                public int PagedPoolUsage;
                public int NonPagedPoolUsage;
            }

            [StructLayout(LayoutKind.Sequential)]
            public struct OBJECT_NAME_INFORMATION
            { // Information Class 1
                public UNICODE_STRING Name;
            }

            [StructLayout(LayoutKind.Sequential, Pack = 1)]
            public struct UNICODE_STRING
            {
                public ushort Length;
                public ushort MaximumLength;
                public IntPtr Buffer;
            }

            [StructLayout(LayoutKind.Sequential)]
            public struct GENERIC_MAPPING
            {
                public int GenericRead;
                public int GenericWrite;
                public int GenericExecute;
                public int GenericAll;
            }

            [StructLayout(LayoutKind.Sequential, Pack = 1)]
            public struct SYSTEM_HANDLE_INFORMATION
            { // Information Class 16
                public int ProcessID;
                public byte ObjectTypeNumber;
                public byte Flags; // 0x01 = PROTECT_FROM_CLOSE, 0x02 = INHERIT
                public ushort Handle;
                public int Object_Pointer;
                public UInt32 GrantedAccess;
            }

            public const int MAX_PATH = 260;
            public const uint STATUS_INFO_LENGTH_MISMATCH = 0xC0000004;
            public const int DUPLICATE_SAME_ACCESS = 0x2;
            public const uint FILE_SEQUENTIAL_ONLY = 0x00000004;
        }
        #endregion
    }
}