Reorganize filesystems.

Aaru.Filesystems/SolarFS/Structs.cs

@@ -0,0 +1,74 @@
+// /***************************************************************************
+// Aaru Data Preservation Suite
+// ----------------------------------------------------------------------------
+//
+// Filename       : Structs.cs
+// Author(s)      : Natalia Portillo <claunia@claunia.com>
+//
+// Component      : SolarOS 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
+// ****************************************************************************/
+
+using System.Diagnostics.CodeAnalysis;
+
+namespace Aaru.Filesystems;
+
+// Based on FAT's BPB, cannot find a FAT or directory
+/// <inheritdoc />
+/// <summary>Implements detection of the Solar OS filesystem</summary>
+public sealed partial class SolarFS
+{
+    [SuppressMessage("ReSharper", "InconsistentNaming")]
+    struct BiosParameterBlock
+    {
+        /// <summary>0x00, x86 jump (3 bytes), jumps to 0x60</summary>
+        public byte[] x86_jump;
+        /// <summary>0x03, 8 bytes, "SOLAR_OS"</summary>
+        public string OEMName;
+        /// <summary>0x0B, Bytes per sector</summary>
+        public ushort bps;
+        /// <summary>0x0D, unknown, 0x01</summary>
+        public byte unk1;
+        /// <summary>0x0E, unknown, 0x0201</summary>
+        public ushort unk2;
+        /// <summary>0x10, Number of entries on root directory ? (no root directory found)</summary>
+        public ushort root_ent;
+        /// <summary>0x12, Sectors in volume</summary>
+        public ushort sectors;
+        /// <summary>0x14, Media descriptor</summary>
+        public byte media;
+        /// <summary>0x15, Sectors per FAT ? (no FAT found)</summary>
+        public ushort spfat;
+        /// <summary>0x17, Sectors per track</summary>
+        public ushort sptrk;
+        /// <summary>0x19, Heads</summary>
+        public ushort heads;
+        /// <summary>0x1B, unknown, 10 bytes, zero-filled</summary>
+        public byte[] unk3;
+        /// <summary>0x25, 0x29</summary>
+        public byte signature;
+        /// <summary>0x26, unknown, zero-filled</summary>
+        public uint unk4;
+        /// <summary>0x2A, 11 bytes, volume name, space-padded</summary>
+        public string vol_name;
+        /// <summary>0x35, 8 bytes, "SOL_FS  "</summary>
+        public string fs_type;
+    }
+}