public static extern SafeFileHandle CreateFileW(
[MarshalAs(UnmanagedType.LPWStr)] string filename,
[MarshalAs(UnmanagedType.U4)] FileAccess access,
[MarshalAs(UnmanagedType.U4)] FileShare share,
IntPtr securityAttributes,
[MarshalAs(UnmanagedType.U4)] FileMode creationDisposition,
[MarshalAs(UnmanagedType.U4)] FileFlagAndAttributes flagsAndAttributes,
IntPtr templateFile);
public void NewIoControlTest(string Path, FileAccess FileAccess = default, FileShare FileShare = default, FileMode CreationDisposition = default, FileFlagAndAttributes FlagAndAttributes = default)
{
using (var IoControl = new IoControl(Path, FileAccess, FileShare, CreationDisposition, FlagAndAttributes))
{
if (IoControl.IsInvalid)
{
Marshal.ThrowExceptionForHR(Marshal.GetHRForLastWin32Error());
}
Trace.WriteLine(IoControl);
}
}
public static FileAttributes GetAttributes(this FileFlagAndAttributes FileFlagAndAttributes) => (FileAttributes)((uint)FileFlagAndAttributes & 0x000FFFFF);
public static void Deconstruct(this FileFlagAndAttributes FileFlagAndAttributes, out FileFlags FileFlags, FileAttributes FileAttributes) => (FileFlags, FileAttributes) = (GetFlags(FileFlagAndAttributes), GetAttributes(FileFlagAndAttributes));
public static FileFlags GetFlags(this FileFlagAndAttributes FileFlagAndAttributes) => (FileFlags)((uint)FileFlagAndAttributes & 0xFFF00000);
/// <summary>
/// パスのジェネレータを元に解放が予約済の<see cref="IoControl"/>を生成する。
/// </summary>
/// <param name="PathGenerator"></param>
/// <param name="FileAccess"></param>
/// <param name="FileShare"></param>
/// <param name="CreationDisposition"></param>
/// <param name="FlagAndAttributes"></param>
/// <returns></returns>
/// <exception cref="AssertInconclusiveException"><paramref name="PathGenerator"/>により生成されたパスが一つも開けなかった場合</exception>
public static IEnumerable <IoControl> GetIoControls(this IEnumerable <string> PathGenerator, FileAccess FileAccess = default, FileShare FileShare = default, FileMode CreationDisposition = default, FileFlagAndAttributes FlagAndAttributes = default)
{
IEnumerable <IoControl> Genarator()
{
foreach (var path in PathGenerator)
{
var file = GetIoControl(path, FileAccess, FileShare, CreationDisposition, FlagAndAttributes);
if (file.IsInvalid)
{
file.Dispose();
continue;
}
yield return(file);
}
}
if (PathGenerator == null)
{
throw new ArgumentNullException(nameof(PathGenerator));
}
return(Genarator());
}
/// <summary> /// 論理ドライブのパスを元に解放が予約済の<see cref="IoControl"/>を生成する /// </summary> /// <param name="FileAccess"></param> /// <param name="FileShare"></param> /// <param name="CreationDisposition"></param> /// <param name="FlagAndAttributes"></param> /// <returns></returns> public static IEnumerable <IoControl> GetLogicalDrives(FileAccess FileAccess = default, FileShare FileShare = default, FileMode CreationDisposition = default, FileFlagAndAttributes FlagAndAttributes = default) => Using(GetIoControls(LogicalDrivePath, FileAccess, FileShare, CreationDisposition, FlagAndAttributes));
public static IoControl GetIoControl(string path, FileAccess FileAccess = default, FileShare FileShare = default, FileMode CreationDisposition = default, FileFlagAndAttributes FlagAndAttributes = default) => new IoControl(path, FileAccess, FileShare, CreationDisposition, FlagAndAttributes);
public static IEnumerable <IoControl.IoControl> GetScsiDrives(FileAccess FileAccess = default, FileShare FileShare = default, FileMode CreationDisposition = default, FileFlagAndAttributes FlagsAndAttributes = default)
{
bool hasDrive = false;
foreach (var DeviceName in QueryDocDevice().Where(v => v.IndexOf("Scsi") == 0))
{
var Path = $@"\\.\{DeviceName}";
using (var file = new IoControl.IoControl(Path, FileAccess, FileShare, CreationDisposition, FlagsAndAttributes))
{
Trace.WriteLine($"Open {file} ... {(file.IsInvalid ? "NG" : "OK")}.");
if (file.IsInvalid)
{
continue;
}
hasDrive = true;
yield return(file);
}
}
if (!hasDrive)
{
throw new Exception("対象となるドライブがありません。");
}
}
