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[ods] Promote to IReadOnlyFilesystem.

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Natalia Portillo
2026-02-07 18:14:40 +00:00
parent 0cb58027ec
commit a86c07336f
5 changed files with 94 additions and 33 deletions
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10
Aaru.Filesystems/ODS/Consts.cs
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@@ -32,16 +32,6 @@
namespace Aaru.Filesystems;
// Information from VMS File System Internals by Kirby McCoy
// ISBN: 1-55558-056-4
// With some hints from http://www.decuslib.com/DECUS/vmslt97b/gnusoftware/gccaxp/7_1/vms/hm2def.h
// Expects the home block to be always in sector #1 (does not check deltas)
// Assumes a sector size of 512 bytes (VMS does on HDDs and optical drives, dunno about M.O.)
// Book only describes ODS-2. Need to test ODS-1 and ODS-5
// There is an ODS with signature "DECFILES11A", yet to be seen
// Time is a 64 bit unsigned integer, tenths of microseconds since 1858/11/17 00:00:00.
/// <inheritdoc />
/// <summary>Implements detection of DEC's On-Disk Structure, aka the ODS filesystem</summary>
public sealed partial class ODS
{
const string FS_TYPE = "files11";

10
Aaru.Filesystems/ODS/Info.cs
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@@ -41,16 +41,6 @@ using Partition = Aaru.CommonTypes.Partition;
namespace Aaru.Filesystems;
// Information from VMS File System Internals by Kirby McCoy
// ISBN: 1-55558-056-4
// With some hints from http://www.decuslib.com/DECUS/vmslt97b/gnusoftware/gccaxp/7_1/vms/hm2def.h
// Expects the home block to be always in sector #1 (does not check deltas)
// Assumes a sector size of 512 bytes (VMS does on HDDs and optical drives, dunno about M.O.)
// Book only describes ODS-2. Need to test ODS-1 and ODS-5
// There is an ODS with signature "DECFILES11A", yet to be seen
// Time is a 64 bit unsigned integer, tenths of microseconds since 1858/11/17 00:00:00.
/// <inheritdoc />
/// <summary>Implements detection of DEC's On-Disk Structure, aka the ODS filesystem</summary>
public sealed partial class ODS
{
#region IFilesystem Members

14
Aaru.Filesystems/ODS/ODS.cs
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@@ -31,6 +31,8 @@
// ****************************************************************************/
using System;
using System.Collections.Generic;
using Aaru.CommonTypes.AaruMetadata;
using Aaru.CommonTypes.Interfaces;
namespace Aaru.Filesystems;
@@ -38,17 +40,25 @@ namespace Aaru.Filesystems;
// Information from VMS File System Internals by Kirby McCoy
// ISBN: 1-55558-056-4
// With some hints from http://www.decuslib.com/DECUS/vmslt97b/gnusoftware/gccaxp/7_1/vms/hm2def.h
// And the Linux ODS5 implementation by Hartmut Becker
// Expects the home block to be always in sector #1 (does not check deltas)
// Assumes a sector size of 512 bytes (VMS does on HDDs and optical drives, dunno about M.O.)
// Book only describes ODS-2. Need to test ODS-1 and ODS-5
// There is an ODS with signature "DECFILES11A", yet to be seen
// Time is a 64 bit unsigned integer, tenths of microseconds since 1858/11/17 00:00:00.
/// <inheritdoc />
/// <summary>Implements detection of DEC's On-Disk Structure, aka the ODS filesystem</summary>
public sealed partial class ODS : IFilesystem
/// <summary>Implements DEC's On-Disk Structure, aka the ODS filesystem</summary>
public sealed partial class ODS : IReadOnlyFilesystem
{
const string MODULE_NAME = "Files-11 plugin";
/// <inheritdoc />
public FileSystem Metadata { get; private set; }
/// <inheritdoc />
public IEnumerable<(string name, Type type, string description)> SupportedOptions { get; } = [];
/// <inheritdoc />
public Dictionary<string, string> Namespaces { get; } = [];
#region IFilesystem Members
/// <inheritdoc />

11
Aaru.Filesystems/ODS/Structs.cs
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@@ -34,17 +34,6 @@ using System.Runtime.InteropServices;
namespace Aaru.Filesystems;
// Information from VMS File System Internals by Kirby McCoy
// ISBN: 1-55558-056-4
// With some hints from http://www.decuslib.com/DECUS/vmslt97b/gnusoftware/gccaxp/7_1/vms/hm2def.h
// And the Linux ODS5 implementation by Hartmut Becker
// Expects the home block to be always in sector #1 (does not check deltas)
// Assumes a sector size of 512 bytes (VMS does on HDDs and optical drives, dunno about M.O.)
// Book only describes ODS-2. Need to test ODS-1 and ODS-5
// There is an ODS with signature "DECFILES11A", yet to be seen
// Time is a 64 bit unsigned integer, tenths of microseconds since 1858/11/17 00:00:00.
/// <inheritdoc />
/// <summary>Implements detection of DEC's On-Disk Structure, aka the ODS filesystem</summary>
public sealed partial class ODS
{
#region Nested type: HomeBlock

82
Aaru.Filesystems/ODS/Unimplemented.cs Normal file
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@@ -0,0 +1,82 @@
// /***************************************************************************
// Aaru Data Preservation Suite
// ----------------------------------------------------------------------------
//
// Filename : Unimplemented.cs
// Author(s) : Natalia Portillo <claunia@claunia.com>
//
// Component : Files-11 On-Disk Structure plugin.
//
// --[ License ] --------------------------------------------------------------
//
// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation; either version 2.1 of the
// License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, see <http://www.gnu.org/licenses/>.
//
// ----------------------------------------------------------------------------
// Copyright © 2011-2026 Natalia Portillo
// ****************************************************************************/
using System;
using System.Collections.Generic;
using System.Text;
using Aaru.CommonTypes;
using Aaru.CommonTypes.Enums;
using Aaru.CommonTypes.Interfaces;
using Aaru.CommonTypes.Structs;
namespace Aaru.Filesystems;
public sealed partial class ODS
{
/// <inheritdoc />
public ErrorNumber Mount(IMediaImage imagePlugin, Partition partition, Encoding encoding,
Dictionary<string, string> options, string @namespace) =>
throw new NotImplementedException();
/// <inheritdoc />
public ErrorNumber Unmount() => throw new NotImplementedException();
/// <inheritdoc />
public ErrorNumber ListXAttr(string path, out List<string> xattrs) => throw new NotImplementedException();
/// <inheritdoc />
public ErrorNumber GetXattr(string path, string xattr, ref byte[] buf) => throw new NotImplementedException();
/// <inheritdoc />
public ErrorNumber StatFs(out FileSystemInfo stat) => throw new NotImplementedException();
/// <inheritdoc />
public ErrorNumber Stat(string path, out FileEntryInfo stat) => throw new NotImplementedException();
/// <inheritdoc />
public ErrorNumber ReadLink(string path, out string dest) => throw new NotImplementedException();
/// <inheritdoc />
public ErrorNumber OpenFile(string path, out IFileNode node) => throw new NotImplementedException();
/// <inheritdoc />
public ErrorNumber CloseFile(IFileNode node) => throw new NotImplementedException();
/// <inheritdoc />
public ErrorNumber ReadFile(IFileNode node, long length, byte[] buffer, out long read) =>
throw new NotImplementedException();
/// <inheritdoc />
public ErrorNumber OpenDir(string path, out IDirNode node) => throw new NotImplementedException();
/// <inheritdoc />
public ErrorNumber CloseDir(IDirNode node) => throw new NotImplementedException();
/// <inheritdoc />
public ErrorNumber ReadDir(IDirNode node, out string filename) => throw new NotImplementedException();
}