/// <summary>
/// CreateFile2 wrapper. Only available on Windows 8 and above.
/// </summary>
public static unsafe SafeFileHandle CreateFile2(
StringSpan path,
DesiredAccess desiredAccess,
ShareModes shareMode,
CreationDisposition creationDisposition,
FileAttributes fileAttributes = FileAttributes.None,
FileFlags fileFlags = FileFlags.None,
SecurityQosFlags securityQosFlags = SecurityQosFlags.None)
{
CREATEFILE2_EXTENDED_PARAMETERS extended = new CREATEFILE2_EXTENDED_PARAMETERS()
{
dwSize = (uint)sizeof(CREATEFILE2_EXTENDED_PARAMETERS),
dwFileAttributes = fileAttributes,
dwFileFlags = fileFlags,
dwSecurityQosFlags = securityQosFlags
};
SafeFileHandle handle = Imports.CreateFile2(
lpFileName: ref MemoryMarshal.GetReference(path.GetSpanWithoutTerminator()),
dwDesiredAccess: desiredAccess,
dwShareMode: shareMode,
dwCreationDisposition: creationDisposition,
pCreateExParams: ref extended);
if (handle.IsInvalid)
{
throw Error.GetExceptionForLastError(path.ToString());
}
return(handle);
}
//[Test]
public void AsyncReadWriteTest()
{
var fn = Path.GetTempFileName();
uint sz = 1024 * 1024 * 128;
using (var hFile = CreateFile(fn, Kernel32.FileAccess.GENERIC_WRITE, FileShare.Write, null, FileMode.OpenOrCreate,
FileFlagsAndAttributes.FILE_FLAG_OVERLAPPED, IntPtr.Zero))
{
var bytes = GetBigBytes(sz, 1);
Assert.That(bytes[1024], Is.EqualTo(1));
new TaskFactory().FromAsync <HFILE, byte[], uint>(BeginWriteFile, EndWriteFile, hFile, bytes, (uint)bytes.Length, 1).Wait();
}
var fi = new FileInfo(fn);
Assert.That(fi.Exists);
Assert.That(fi.Length, Is.EqualTo(sz));
var cfp2 = new CREATEFILE2_EXTENDED_PARAMETERS {
dwFileFlags = FileFlagsAndAttributes.FILE_FLAG_OVERLAPPED, dwSize = (uint)Marshal.SizeOf(typeof(CREATEFILE2_EXTENDED_PARAMETERS))
};
using (var hFile = CreateFile2(fn, Kernel32.FileAccess.GENERIC_READ, FileShare.Read, FileMode.Open, cfp2))
{
var bytes = GetBigBytes(sz);
Assert.That(bytes[1024], Is.EqualTo(0));
new TaskFactory().FromAsync <HFILE, byte[], uint>(BeginReadFile, EndReadFile, hFile, bytes, (uint)bytes.Length, 1).Wait();
Assert.That(bytes[1024], Is.EqualTo(1));
}
Assert.That(DeleteFile(fn), Is.True);
}
/// <summary>
/// CreateFile2 wrapper. Only available on Windows 8 and above.
/// </summary>
public static SafeFileHandle CreateFile2(
string path,
DesiredAccess desiredAccess,
ShareMode shareMode,
CreationDisposition creationDisposition,
FileAttributes fileAttributes = FileAttributes.NONE,
FileFlags fileFlags = FileFlags.NONE,
SecurityQosFlags securityQosFlags = SecurityQosFlags.NONE)
{
CREATEFILE2_EXTENDED_PARAMETERS extended = new CREATEFILE2_EXTENDED_PARAMETERS();
extended.dwSize = (uint)Marshal.SizeOf <CREATEFILE2_EXTENDED_PARAMETERS>();
extended.dwFileAttributes = fileAttributes;
extended.dwFileFlags = fileFlags;
extended.dwSecurityQosFlags = securityQosFlags;
unsafe
{
extended.lpSecurityAttributes = null;
}
extended.hTemplateFile = IntPtr.Zero;
SafeFileHandle handle = Direct.CreateFile2(
lpFileName: path,
dwDesiredAccess: desiredAccess,
dwShareMode: shareMode,
dwCreationDisposition: creationDisposition,
pCreateExParams: ref extended);
if (handle.IsInvalid)
{
throw ErrorHelper.GetIoExceptionForLastError();
}
return(handle);
}
/// <summary>
/// CreateFile2 wrapper. Only available on Windows 8 and above.
/// </summary>
public static unsafe SafeFileHandle CreateFile2(
string path,
DesiredAccess desiredAccess,
ShareModes shareMode,
CreationDisposition creationDisposition,
FileAttributes fileAttributes = FileAttributes.None,
FileFlags fileFlags = FileFlags.None,
SecurityQosFlags securityQosFlags = SecurityQosFlags.None)
{
CREATEFILE2_EXTENDED_PARAMETERS extended = new CREATEFILE2_EXTENDED_PARAMETERS()
{
dwSize = (uint)sizeof(CREATEFILE2_EXTENDED_PARAMETERS),
dwFileAttributes = fileAttributes,
dwFileFlags = fileFlags,
dwSecurityQosFlags = securityQosFlags
};
SafeFileHandle handle = Imports.CreateFile2(
lpFileName: path,
dwDesiredAccess: desiredAccess,
dwShareMode: shareMode,
dwCreationDisposition: creationDisposition,
pCreateExParams: ref extended);
if (handle.IsInvalid)
{
throw Errors.GetIoExceptionForLastError(path);
}
return(handle);
}
public static extern IntPtr CreateFile2(string lpFileName, uint dwDesiredAccess, uint dwShareMode, uint dwCreationDisposition, CREATEFILE2_EXTENDED_PARAMETERS pCreateExParams);
internal static extern SafeFileHandle CreateFile2(
string lpFileName,
int dwDesiredAccess,
System.IO.FileShare dwShareMode,
System.IO.FileMode dwCreationDisposition,
[In] ref CREATEFILE2_EXTENDED_PARAMETERS parameters);
internal static extern unsafe IntPtr CreateFile2(
string lpFileName,
int dwDesiredAccess,
FileShare dwShareMode,
FileMode dwCreationDisposition,
[In] ref CREATEFILE2_EXTENDED_PARAMETERS parameters);
private static extern SafePipeHandle CreateNamedPipeClientPrivate(
string lpFileName,
int dwDesiredAccess,
System.IO.FileShare dwShareMode,
System.IO.FileMode dwCreationDisposition,
[In] ref CREATEFILE2_EXTENDED_PARAMETERS parameters);
public static extern SafeFileHandle CreateFile2(
string lpFileName,
DesiredAccess dwDesiredAccess,
ShareModes dwShareMode,
CreationDisposition dwCreationDisposition,
[In] ref CREATEFILE2_EXTENDED_PARAMETERS pCreateExParams);