internal static DateTime GetChangeTimeCore(KernelTransaction transaction, SafeFileHandle safeFileHandle, bool isFolder, string path, bool getUtc, PathFormat pathFormat)
{
if (!NativeMethods.IsAtLeastWindowsVista)
{
throw new PlatformNotSupportedException(new Win32Exception((int)Win32Errors.ERROR_OLD_WIN_VERSION).Message);
}
var callerHandle = null != safeFileHandle;
if (!callerHandle)
{
if (pathFormat != PathFormat.LongFullPath && Utils.IsNullOrWhiteSpace(path))
{
throw new ArgumentNullException("path");
}
var pathLp = Path.GetExtendedLengthPathCore(transaction, path, pathFormat, GetFullPathOptions.RemoveTrailingDirectorySeparator | GetFullPathOptions.CheckInvalidPathChars);
safeFileHandle = CreateFileCore(transaction, isFolder, pathLp, ExtendedFileAttributes.BackupSemantics, null, FileMode.Open, FileSystemRights.ReadData, FileShare.ReadWrite, true, false, PathFormat.LongFullPath);
}
try
{
NativeMethods.IsValidHandle(safeFileHandle);
using (var safeBuffer = new SafeGlobalMemoryBufferHandle(IntPtr.Size + Marshal.SizeOf(typeof(NativeMethods.FILE_BASIC_INFO))))
{
NativeMethods.FILE_BASIC_INFO fbi;
var success = NativeMethods.GetFileInformationByHandleEx_FileBasicInfo(safeFileHandle, NativeMethods.FILE_INFO_BY_HANDLE_CLASS.FILE_BASIC_INFO, out fbi, (uint)safeBuffer.Capacity);
var lastError = Marshal.GetLastWin32Error();
if (!success)
{
NativeError.ThrowException(lastError, !Utils.IsNullOrWhiteSpace(path) ? path : null);
}
safeBuffer.StructureToPtr(fbi, true);
var changeTime = safeBuffer.PtrToStructure <NativeMethods.FILE_BASIC_INFO>(0).ChangeTime;
return(getUtc ? DateTime.FromFileTimeUtc(changeTime) : DateTime.FromFileTime(changeTime));
}
}
finally
{
// Handle is ours, dispose.
if (!callerHandle && null != safeFileHandle)
{
safeFileHandle.Close();
}
}
}
internal static DateTime GetChangeTimeCore(bool isFolder, KernelTransaction transaction, SafeFileHandle safeHandle, string path, bool getUtc, PathFormat pathFormat)
{
if (!NativeMethods.IsAtLeastWindowsVista)
{
throw new PlatformNotSupportedException(Resources.Requires_Windows_Vista_Or_Higher);
}
bool callerHandle = safeHandle != null;
if (!callerHandle)
{
if (pathFormat != PathFormat.LongFullPath && Utils.IsNullOrWhiteSpace(path))
{
throw new ArgumentNullException("path");
}
string pathLp = Path.GetExtendedLengthPathCore(transaction, path, pathFormat, GetFullPathOptions.RemoveTrailingDirectorySeparator | GetFullPathOptions.CheckInvalidPathChars);
safeHandle = CreateFileCore(transaction, pathLp, isFolder ? ExtendedFileAttributes.BackupSemantics : ExtendedFileAttributes.Normal, null, FileMode.Open, FileSystemRights.ReadData, FileShare.ReadWrite, true, PathFormat.LongFullPath);
}
try
{
NativeMethods.IsValidHandle(safeHandle);
using (var safeBuffer = new SafeGlobalMemoryBufferHandle(IntPtr.Size + Marshal.SizeOf(typeof(NativeMethods.FILE_BASIC_INFO))))
{
NativeMethods.FILE_BASIC_INFO fbi;
if (!NativeMethods.GetFileInformationByHandleEx_FileBasicInfo(safeHandle, NativeMethods.FileInfoByHandleClass.FileBasicInfo, out fbi, (uint)safeBuffer.Capacity))
{
NativeError.ThrowException(Marshal.GetLastWin32Error());
}
safeBuffer.StructureToPtr(fbi, true);
NativeMethods.FILETIME changeTime = safeBuffer.PtrToStructure <NativeMethods.FILE_BASIC_INFO>(0).ChangeTime;
return(getUtc
? DateTime.FromFileTimeUtc(changeTime)
: DateTime.FromFileTime(changeTime));
}
}
finally
{
// Handle is ours, dispose.
if (!callerHandle && safeHandle != null)
{
safeHandle.Close();
}
}
}
/// <summary>[AlphaFS] Creates an NTFS directory junction (similar to CMD command: "MKLINK /J").</summary>
internal static void CreateDirectoryJunction(SafeFileHandle safeHandle, string directoryPath)
{
var targetDirBytes = Encoding.Unicode.GetBytes(Path.NonInterpretedPathPrefix + Path.GetRegularPathCore(directoryPath, GetFullPathOptions.AddTrailingDirectorySeparator, false));
var header = new NativeMethods.ReparseDataBufferHeader
{
ReparseTag = ReparsePointTag.MountPoint,
ReparseDataLength = (ushort)(targetDirBytes.Length + 12)
};
var mountPoint = new NativeMethods.MountPointReparseBuffer
{
SubstituteNameOffset = 0,
SubstituteNameLength = (ushort)targetDirBytes.Length,
PrintNameOffset = (ushort)(targetDirBytes.Length + UnicodeEncoding.CharSize),
PrintNameLength = 0
};
var reparseDataBuffer = new NativeMethods.REPARSE_DATA_BUFFER
{
ReparseTag = header.ReparseTag,
ReparseDataLength = header.ReparseDataLength,
SubstituteNameOffset = mountPoint.SubstituteNameOffset,
SubstituteNameLength = mountPoint.SubstituteNameLength,
PrintNameOffset = mountPoint.PrintNameOffset,
PrintNameLength = mountPoint.PrintNameLength,
PathBuffer = new byte[NativeMethods.MAXIMUM_REPARSE_DATA_BUFFER_SIZE - 16] // 16368
};
targetDirBytes.CopyTo(reparseDataBuffer.PathBuffer, 0);
using (var safeBuffer = new SafeGlobalMemoryBufferHandle(Marshal.SizeOf(reparseDataBuffer)))
{
safeBuffer.StructureToPtr(reparseDataBuffer, false);
uint bytesReturned;
var succes = NativeMethods.DeviceIoControl2(safeHandle, NativeMethods.FSCTL_SET_REPARSE_POINT, safeBuffer, (uint)(targetDirBytes.Length + 20), IntPtr.Zero, 0, out bytesReturned, IntPtr.Zero);
var lastError = Marshal.GetLastWin32Error();
if (!succes)
{
NativeError.ThrowException(lastError, directoryPath);
}
}
}
/// <summary>[AlphaFS] Deletes an NTFS directory junction.</summary>
internal static void DeleteDirectoryJunction(SafeFileHandle safeHandle)
{
var reparseDataBuffer = new NativeMethods.REPARSE_DATA_BUFFER
{
ReparseTag = ReparsePointTag.MountPoint,
ReparseDataLength = 0,
PathBuffer = new byte[NativeMethods.MAXIMUM_REPARSE_DATA_BUFFER_SIZE - 16] // 16368
};
using (var safeBuffer = new SafeGlobalMemoryBufferHandle(Marshal.SizeOf(reparseDataBuffer)))
{
safeBuffer.StructureToPtr(reparseDataBuffer, false);
uint bytesReturned;
var success = NativeMethods.DeviceIoControl2(safeHandle, NativeMethods.FSCTL_DELETE_REPARSE_POINT, safeBuffer, NativeMethods.REPARSE_DATA_BUFFER_HEADER_SIZE, IntPtr.Zero, 0, out bytesReturned, IntPtr.Zero);
var lastError = Marshal.GetLastWin32Error();
if (!success)
{
NativeError.ThrowException(lastError);
}
}
}
internal static DateTime GetChangeTimeInternal(bool isFolder, KernelTransaction transaction, SafeFileHandle safeHandle, string path, bool getUtc, PathFormat pathFormat)
{
if (!NativeMethods.IsAtLeastWindowsVista)
throw new PlatformNotSupportedException(Resources.RequiresWindowsVistaOrHigher);
bool callerHandle = safeHandle != null;
if (!callerHandle)
{
if (pathFormat != PathFormat.LongFullPath && Utils.IsNullOrWhiteSpace(path))
throw new ArgumentNullException("path");
string pathLp = Path.GetExtendedLengthPathInternal(transaction, path, pathFormat, GetFullPathOptions.RemoveTrailingDirectorySeparator | GetFullPathOptions.CheckInvalidPathChars);
safeHandle = CreateFileInternal(transaction, pathLp, isFolder ? ExtendedFileAttributes.BackupSemantics : ExtendedFileAttributes.Normal, null, FileMode.Open, FileSystemRights.ReadData, FileShare.ReadWrite, true, PathFormat.LongFullPath);
}
try
{
NativeMethods.IsValidHandle(safeHandle);
using (var safeBuffer = new SafeGlobalMemoryBufferHandle(IntPtr.Size + Marshal.SizeOf(typeof(NativeMethods.FileBasicInfo))))
{
NativeMethods.FileBasicInfo fbi;
if (!NativeMethods.GetFileInformationByHandleEx_FileBasicInfo(safeHandle, NativeMethods.FileInfoByHandleClass.FileBasicInfo, out fbi, (uint)safeBuffer.Capacity))
NativeError.ThrowException(Marshal.GetLastWin32Error());
safeBuffer.StructureToPtr(fbi, true);
NativeMethods.FileTime changeTime = safeBuffer.PtrToStructure<NativeMethods.FileBasicInfo>().ChangeTime;
return getUtc
? DateTime.FromFileTimeUtc(changeTime)
: DateTime.FromFileTime(changeTime);
}
}
finally
{
// Handle is ours, dispose.
if (!callerHandle && safeHandle != null)
safeHandle.Close();
}
}