Reorganize filesystems.

Aaru.Filesystems/JFS/Structs.cs

@@ -0,0 +1,90 @@
+// /***************************************************************************
+// Aaru Data Preservation Suite
+// ----------------------------------------------------------------------------
+//
+// Filename       : Structs.cs
+// Author(s)      : Natalia Portillo <claunia@claunia.com>
+//
+// Component      : IBM JFS filesystem 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 © 2011-2023 Natalia Portillo
+// ****************************************************************************/
+
+// ReSharper disable UnusedMember.Local
+
+using System;
+using System.Runtime.InteropServices;
+
+namespace Aaru.Filesystems;
+
+/// <inheritdoc />
+/// <summary>Implements detection of IBM's Journaled File System</summary>
+public sealed partial class JFS
+{
+    [StructLayout(LayoutKind.Sequential, Pack = 1)]
+    readonly struct Extent
+    {
+        /// <summary>Leftmost 24 bits are extent length, rest 8 bits are most significant for <see cref="addr2" /></summary>
+        public readonly uint len_addr;
+        public readonly uint addr2;
+    }
+
+    [StructLayout(LayoutKind.Sequential, Pack = 1)]
+    readonly struct TimeStruct
+    {
+        public readonly uint tv_sec;
+        public readonly uint tv_nsec;
+    }
+
+    [StructLayout(LayoutKind.Sequential, Pack = 1)]
+    readonly struct SuperBlock
+    {
+        public readonly uint       s_magic;
+        public readonly uint       s_version;
+        public readonly ulong      s_size;
+        public readonly uint       s_bsize;
+        public readonly ushort     s_l2bsize;
+        public readonly ushort     s_l2bfactor;
+        public readonly uint       s_pbsize;
+        public readonly ushort     s_l1pbsize;
+        public readonly ushort     pad;
+        public readonly uint       s_agsize;
+        public readonly Flags      s_flags;
+        public readonly State      s_state;
+        public readonly uint       s_compress;
+        public readonly Extent     s_ait2;
+        public readonly Extent     s_aim2;
+        public readonly uint       s_logdev;
+        public readonly uint       s_logserial;
+        public readonly Extent     s_logpxd;
+        public readonly Extent     s_fsckpxd;
+        public readonly TimeStruct s_time;
+        public readonly uint       s_fsckloglen;
+        public readonly sbyte      s_fscklog;
+        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 11)]
+        public readonly byte[] s_fpack;
+        public readonly ulong  s_xsize;
+        public readonly Extent s_xfsckpxd;
+        public readonly Extent s_xlogpxd;
+        public readonly Guid   s_uuid;
+        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
+        public readonly byte[] s_label;
+        public readonly Guid s_loguuid;
+    }
+}