/// <summary>
/// Convert a DOS filename to an NT filename and get as an ObjectAttributes structure
/// </summary>
/// <param name="filename">The filename</param>
/// <returns>The object attributes</returns>
public static ObjectAttributes DosFileNameToObjectAttributes(string filename)
{
if (filename == null)
{
throw new ArgumentNullException("filename");
}
UnicodeStringOut nt_name = new UnicodeStringOut();
RtlRelativeName relative_name = new RtlRelativeName();
try
{
NtRtl.RtlDosPathNameToRelativeNtPathName_U_WithStatus(filename, out nt_name, out IntPtr short_path, relative_name).ToNtException();
if (relative_name.RelativeName.Buffer != IntPtr.Zero)
{
return new ObjectAttributes(relative_name.RelativeName.ToString(), AttributeFlags.CaseInsensitive,
new SafeKernelObjectHandle(relative_name.ContainingDirectory, false), null, null);
}
else
{
return new ObjectAttributes(nt_name.ToString(), AttributeFlags.CaseInsensitive);
}
}
finally
{
if (nt_name.Buffer != IntPtr.Zero)
{
NtRtl.RtlFreeUnicodeString(ref nt_name);
}
if (relative_name.RelativeName.Buffer != IntPtr.Zero)
{
NtRtl.RtlReleaseRelativeName(relative_name);
}
}
}
/// <summary>
/// Convert a DOS filename to an NT filename and get as an ObjectAttributes structure
/// </summary>
/// <param name="filename">The DOS filename.</param>
/// <param name="attributes">The object attribute flags.</param>
/// <param name="sqos">An optional security quality of service.</param>
/// <param name="security_descriptor">An optional security descriptor.</param>
/// <param name="throw_on_error">True to throw on error.</param>
/// <returns>The object attributes</returns>
public static NtResult <ObjectAttributes> DosFileNameToObjectAttributes(string filename, AttributeFlags attributes,
SecurityQualityOfService sqos, SecurityDescriptor security_descriptor, bool throw_on_error)
{
if (filename == null)
{
throw new ArgumentNullException("filename");
}
UnicodeStringOut nt_name = new UnicodeStringOut();
RtlRelativeName relative_name = new RtlRelativeName();
try
{
NtStatus status = NtRtl.RtlDosPathNameToRelativeNtPathName_U_WithStatus(filename, out nt_name,
out IntPtr short_path, relative_name);
if (!status.IsSuccess())
{
return(status.CreateResultFromError <ObjectAttributes>(throw_on_error));
}
string final_name;
SafeKernelObjectHandle root = SafeKernelObjectHandle.Null;
if (relative_name.RelativeName.Buffer != IntPtr.Zero)
{
final_name = relative_name.RelativeName.ToString();
root = new SafeKernelObjectHandle(relative_name.ContainingDirectory, false);
}
else
{
final_name = nt_name.ToString();
}
return(status.CreateResult(false, () =>
new ObjectAttributes(final_name, attributes, root, sqos, security_descriptor)));
}
finally
{
if (nt_name.Buffer != IntPtr.Zero)
{
NtRtl.RtlFreeUnicodeString(ref nt_name);
}
if (relative_name.RelativeName.Buffer != IntPtr.Zero)
{
NtRtl.RtlReleaseRelativeName(relative_name);
}
}
}
public static extern bool RtlReleaseRelativeName([In, Out] RtlRelativeName RelativeName);
public static extern NtStatus RtlDosPathNameToRelativeNtPathName_U_WithStatus(
string DosFileName,
out UnicodeStringOut NtFileName,
out IntPtr ShortPath,
[Out] RtlRelativeName RelativeName
);
