File size: 2,634 Bytes
8c763fb | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 | // Copyright (c) Microsoft Corporation.
// Licensed under the MIT License.
#nullable enable
using System.Diagnostics.CodeAnalysis;
using System.IO;
using System.Management.Automation;
using System.Runtime.InteropServices;
using Microsoft.Win32.SafeHandles;
internal static partial class Interop
{
[SuppressMessage("StyleCop.CSharp.NamingRules", "SA1305:FieldNamesMustNotUseHungarianNotation", Justification = "Keep native struct names.")]
[SuppressMessage("StyleCop.CSharp.NamingRules", "SA1307:AccessibleFieldsMustBeginWithUpperCaseLetter", Justification = "Keep native struct names.")]
internal static unsafe partial class Windows
{
internal const int MAX_PATH = 260;
internal struct FILE_TIME
{
public uint dwLowDateTime;
public uint dwHighDateTime;
}
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
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;
internal fixed char cFileName[MAX_PATH];
internal fixed char cAlternateFileName[14];
}
internal sealed class SafeFindHandle : SafeHandleZeroOrMinusOneIsInvalid
{
// .NET 8 requires the default constructor to be public
public SafeFindHandle() : base(true) { }
protected override bool ReleaseHandle()
{
return Interop.Windows.FindClose(this.handle);
}
}
// We use 'FindFirstFileW' instead of 'FindFirstFileExW' because the latter doesn't work correctly with Unicode file names on FAT32.
// See https://github.com/PowerShell/PowerShell/issues/16804
[LibraryImport("api-ms-win-core-file-l1-1-0.dll", EntryPoint = "FindFirstFileW", SetLastError = true, StringMarshalling = StringMarshalling.Utf16)]
private static partial SafeFindHandle FindFirstFileW(string lpFileName, ref WIN32_FIND_DATA lpFindFileData);
internal static SafeFindHandle FindFirstFile(string lpFileName, ref WIN32_FIND_DATA lpFindFileData)
{
lpFileName = Path.TrimEndingDirectorySeparator(lpFileName);
lpFileName = PathUtils.EnsureExtendedPrefixIfNeeded(lpFileName);
return FindFirstFileW(lpFileName, ref lpFindFileData);
}
}
}
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