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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
using Microsoft.Win32.SafeHandles;
using System;
using System.IO;
using System.Runtime.InteropServices;
internal partial class Interop
{
internal partial class Kernel32
{
/// <summary>
/// WARNING: This method does not implicitly handle long paths. Use GetFileAttributesEx.
/// </summary>
[DllImport(Libraries.Kernel32, EntryPoint = "GetFileAttributesExW", SetLastError = true, CharSet = CharSet.Unicode)]
private static extern bool GetFileAttributesExPrivate(string name, GET_FILEEX_INFO_LEVELS fileInfoLevel, ref WIN32_FILE_ATTRIBUTE_DATA lpFileInformation);
internal static bool GetFileAttributesEx(string name, GET_FILEEX_INFO_LEVELS fileInfoLevel, ref WIN32_FILE_ATTRIBUTE_DATA lpFileInformation)
{
name = PathInternal.EnsureExtendedPrefixOverMaxPath(name);
return GetFileAttributesExPrivate(name, fileInfoLevel, ref lpFileInformation);
}
internal enum GET_FILEEX_INFO_LEVELS : uint
{
GetFileExInfoStandard = 0x0u,
GetFileExMaxInfoLevel = 0x1u,
}
internal struct WIN32_FILE_ATTRIBUTE_DATA
{
internal int fileAttributes;
internal uint ftCreationTimeLow;
internal uint ftCreationTimeHigh;
internal uint ftLastAccessTimeLow;
internal uint ftLastAccessTimeHigh;
internal uint ftLastWriteTimeLow;
internal uint ftLastWriteTimeHigh;
internal uint fileSizeHigh;
internal uint fileSizeLow;
internal void PopulateFrom(ref WIN32_FIND_DATA findData)
{
// Copy the information to data
fileAttributes = (int)findData.dwFileAttributes;
ftCreationTimeLow = findData.ftCreationTime.dwLowDateTime;
ftCreationTimeHigh = findData.ftCreationTime.dwHighDateTime;
ftLastAccessTimeLow = findData.ftLastAccessTime.dwLowDateTime;
ftLastAccessTimeHigh = findData.ftLastAccessTime.dwHighDateTime;
ftLastWriteTimeLow = findData.ftLastWriteTime.dwLowDateTime;
ftLastWriteTimeHigh = findData.ftLastWriteTime.dwHighDateTime;
fileSizeHigh = findData.nFileSizeHigh;
fileSizeLow = findData.nFileSizeLow;
}
}
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
[BestFitMapping(false)]
internal unsafe struct WIN32_FIND_DATA
{
internal uint dwFileAttributes;
internal FILE_TIME ftCreationTime;
internal FILE_TIME ftLastAccessTime;
internal FILE_TIME ftLastWriteTime;
internal uint nFileSizeHigh;
internal uint nFileSizeLow;
internal uint dwReserved0;
internal uint dwReserved1;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)]
internal string cFileName;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 14)]
internal string cAlternateFileName;
}
internal struct FILE_TIME
{
internal uint dwLowDateTime;
internal uint dwHighDateTime;
internal FILE_TIME(long fileTime)
{
dwLowDateTime = (uint)fileTime;
dwHighDateTime = (uint)(fileTime >> 32);
}
internal long ToTicks()
{
return ((long)dwHighDateTime << 32) + dwLowDateTime;
}
}
}
}
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