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271 lines
12 KiB
C#
271 lines
12 KiB
C#
// /***************************************************************************
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// The Disc Image Chef
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// ----------------------------------------------------------------------------
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//
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// Filename : SolarFS.cs
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// Author(s) : Natalia Portillo <claunia@claunia.com>
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//
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// Component : SolarOS filesystem plugin.
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//
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// --[ Description ] ----------------------------------------------------------
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//
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// Identifies the SolarOS filesystem and shows information.
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//
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// --[ License ] --------------------------------------------------------------
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//
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// This library is free software; you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as
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// published by the Free Software Foundation; either version 2.1 of the
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// License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, see <http://www.gnu.org/licenses/>.
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//
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// ----------------------------------------------------------------------------
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// Copyright © 2011-2018 Natalia Portillo
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// ****************************************************************************/
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using System;
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using System.Collections.Generic;
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using System.Text;
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using DiscImageChef.CommonTypes;
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using DiscImageChef.Console;
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using DiscImageChef.DiscImages;
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using Schemas;
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namespace DiscImageChef.Filesystems
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{
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// Based on FAT's BPB, cannot find a FAT or directory
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public class SolarFS : Filesystem
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{
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public SolarFS()
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{
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Name = "Solar_OS filesystem";
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PluginUuid = new Guid("EA3101C1-E777-4B4F-B5A3-8C57F50F6E65");
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CurrentEncoding = Encoding.GetEncoding("iso-8859-15");
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}
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public SolarFS(Encoding encoding)
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{
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Name = "Solar_OS filesystem";
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PluginUuid = new Guid("EA3101C1-E777-4B4F-B5A3-8C57F50F6E65");
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CurrentEncoding = encoding ?? Encoding.GetEncoding("iso-8859-15");
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}
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public SolarFS(ImagePlugin imagePlugin, Partition partition, Encoding encoding)
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{
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Name = "Solar_OS filesystem";
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PluginUuid = new Guid("EA3101C1-E777-4B4F-B5A3-8C57F50F6E65");
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CurrentEncoding = encoding ?? Encoding.GetEncoding("iso-8859-15");
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}
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public override bool Identify(ImagePlugin imagePlugin, Partition partition)
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{
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if(2 + partition.Start >= partition.End) return false;
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byte signature; // 0x29
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byte[] bpb = imagePlugin.ReadSector(0 + partition.Start);
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byte[] fsTypeB = new byte[8];
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signature = bpb[0x25];
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Array.Copy(bpb, 0x35, fsTypeB, 0, 8);
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string fsType = StringHandlers.CToString(fsTypeB);
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return signature == 0x29 && fsType == "SOL_FS ";
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}
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public override void GetInformation(ImagePlugin imagePlugin, Partition partition, out string information)
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{
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information = "";
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StringBuilder sb = new StringBuilder();
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byte[] bpbSector = imagePlugin.ReadSector(0 + partition.Start);
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SolarOSParameterBlock bpb = new SolarOSParameterBlock
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{
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bps = BitConverter.ToUInt16(bpbSector, 0x0B),
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root_ent = BitConverter.ToUInt16(bpbSector, 0x10),
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sectors = BitConverter.ToUInt16(bpbSector, 0x12),
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media = bpbSector[0x14],
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spfat = BitConverter.ToUInt16(bpbSector, 0x15),
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sptrk = BitConverter.ToUInt16(bpbSector, 0x17),
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heads = BitConverter.ToUInt16(bpbSector, 0x19),
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signature = bpbSector[0x25]
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};
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byte[] bpbStrings = new byte[8];
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Array.Copy(bpbSector, 0x03, bpbStrings, 0, 8);
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bpb.OEMName = StringHandlers.CToString(bpbStrings);
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bpbStrings = new byte[8];
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Array.Copy(bpbSector, 0x2A, bpbStrings, 0, 11);
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bpb.vol_name = StringHandlers.CToString(bpbStrings, CurrentEncoding);
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bpbStrings = new byte[8];
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Array.Copy(bpbSector, 0x35, bpbStrings, 0, 8);
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bpb.fs_type = StringHandlers.CToString(bpbStrings, CurrentEncoding);
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bpb.x86_jump = new byte[3];
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Array.Copy(bpbSector, 0x00, bpb.x86_jump, 0, 3);
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bpb.unk1 = bpbSector[0x0D];
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bpb.unk2 = BitConverter.ToUInt16(bpbSector, 0x0E);
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bpb.unk3 = new byte[10];
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Array.Copy(bpbSector, 0x1B, bpb.unk3, 0, 10);
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bpb.unk4 = BitConverter.ToUInt32(bpbSector, 0x26);
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DicConsole.DebugWriteLine("SolarFS plugin", "BPB.x86_jump: 0x{0:X2}{1:X2}{2:X2}", bpb.x86_jump[0],
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bpb.x86_jump[1], bpb.x86_jump[2]);
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DicConsole.DebugWriteLine("SolarFS plugin", "BPB.OEMName: \"{0}\"", bpb.OEMName);
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DicConsole.DebugWriteLine("SolarFS plugin", "BPB.bps: {0}", bpb.bps);
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DicConsole.DebugWriteLine("SolarFS plugin", "BPB.unk1: 0x{0:X2}", bpb.unk1);
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DicConsole.DebugWriteLine("SolarFS plugin", "BPB.unk2: 0x{0:X4}", bpb.unk2);
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DicConsole.DebugWriteLine("SolarFS plugin", "BPB.root_ent: {0}", bpb.root_ent);
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DicConsole.DebugWriteLine("SolarFS plugin", "BPB.sectors: {0}", bpb.sectors);
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DicConsole.DebugWriteLine("SolarFS plugin", "BPB.media: 0x{0:X2}", bpb.media);
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DicConsole.DebugWriteLine("SolarFS plugin", "BPB.spfat: {0}", bpb.spfat);
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DicConsole.DebugWriteLine("SolarFS plugin", "BPB.sptrk: {0}", bpb.sptrk);
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DicConsole.DebugWriteLine("SolarFS plugin", "BPB.heads: {0}", bpb.heads);
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DicConsole.DebugWriteLine("SolarFS plugin",
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"BPB.unk3: 0x{0:X2}{1:X2}{2:X2}{3:X2}{4:X2}{5:X2}{6:X2}{7:X2}{8:X2}{9:X2}",
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bpb.unk3[0], bpb.unk3[1], bpb.unk3[2], bpb.unk3[3], bpb.unk3[4], bpb.unk3[5],
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bpb.unk3[6], bpb.unk3[7], bpb.unk3[8], bpb.unk3[9]);
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DicConsole.DebugWriteLine("SolarFS plugin", "BPB.signature: 0x{0:X2}", bpb.signature);
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DicConsole.DebugWriteLine("SolarFS plugin", "BPB.unk4: 0x{0:X8}", bpb.unk4);
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DicConsole.DebugWriteLine("SolarFS plugin", "BPB.vol_name: \"{0}\"", bpb.vol_name);
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DicConsole.DebugWriteLine("SolarFS plugin", "BPB.fs_type: \"{0}\"", bpb.fs_type);
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sb.AppendLine("Solar_OS filesystem");
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sb.AppendFormat("Media descriptor: 0x{0:X2}", bpb.media).AppendLine();
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sb.AppendFormat("{0} bytes per sector", bpb.bps).AppendLine();
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if(imagePlugin.ImageInfo.SectorSize == 2336 || imagePlugin.ImageInfo.SectorSize == 2352 ||
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imagePlugin.ImageInfo.SectorSize == 2448)
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{
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if(bpb.bps != imagePlugin.ImageInfo.SectorSize)
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sb
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.AppendFormat("WARNING: Filesystem describes a {0} bytes/sector, while device describes a {1} bytes/sector",
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bpb.bps, 2048).AppendLine();
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}
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else if(bpb.bps != imagePlugin.ImageInfo.SectorSize)
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sb
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.AppendFormat("WARNING: Filesystem describes a {0} bytes/sector, while device describes a {1} bytes/sector",
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bpb.bps, imagePlugin.ImageInfo.SectorSize).AppendLine();
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sb.AppendFormat("{0} sectors on volume ({1} bytes)", bpb.sectors, bpb.sectors * bpb.bps).AppendLine();
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if(bpb.sectors > imagePlugin.ImageInfo.Sectors)
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sb.AppendFormat("WARNING: Filesystem describes a {0} sectors volume, bigger than device ({1} sectors)",
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bpb.sectors, imagePlugin.ImageInfo.Sectors);
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sb.AppendFormat("{0} heads", bpb.heads).AppendLine();
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sb.AppendFormat("{0} sectors per track", bpb.sptrk).AppendLine();
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sb.AppendFormat("Volume name: {0}", bpb.vol_name).AppendLine();
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XmlFsType = new FileSystemType
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{
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Type = "SolarFS",
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Clusters = bpb.sectors,
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ClusterSize = bpb.bps,
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VolumeName = bpb.vol_name
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};
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information = sb.ToString();
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}
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public override Errno Mount()
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{
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return Errno.NotImplemented;
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}
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public override Errno Mount(bool debug)
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{
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return Errno.NotImplemented;
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}
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public override Errno Unmount()
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{
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return Errno.NotImplemented;
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}
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public override Errno MapBlock(string path, long fileBlock, ref long deviceBlock)
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{
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return Errno.NotImplemented;
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}
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public override Errno GetAttributes(string path, ref FileAttributes attributes)
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{
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return Errno.NotImplemented;
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}
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public override Errno ListXAttr(string path, ref List<string> xattrs)
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{
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return Errno.NotImplemented;
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}
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public override Errno GetXattr(string path, string xattr, ref byte[] buf)
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{
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return Errno.NotImplemented;
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}
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public override Errno Read(string path, long offset, long size, ref byte[] buf)
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{
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return Errno.NotImplemented;
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}
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public override Errno ReadDir(string path, ref List<string> contents)
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{
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return Errno.NotImplemented;
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}
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public override Errno StatFs(ref FileSystemInfo stat)
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{
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return Errno.NotImplemented;
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}
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public override Errno Stat(string path, ref FileEntryInfo stat)
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{
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return Errno.NotImplemented;
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}
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public override Errno ReadLink(string path, ref string dest)
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{
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return Errno.NotImplemented;
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}
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struct SolarOSParameterBlock
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{
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/// <summary>0x00, x86 jump (3 bytes), jumps to 0x60</summary>
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public byte[] x86_jump;
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/// <summary>0x03, 8 bytes, "SOLAR_OS"</summary>
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public string OEMName;
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/// <summary>0x0B, Bytes per sector</summary>
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public ushort bps;
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/// <summary>0x0D, unknown, 0x01</summary>
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public byte unk1;
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/// <summary>0x0E, unknown, 0x0201</summary>
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public ushort unk2;
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/// <summary>0x10, Number of entries on root directory ? (no root directory found)</summary>
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public ushort root_ent;
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/// <summary>0x12, Sectors in volume</summary>
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public ushort sectors;
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/// <summary>0x14, Media descriptor</summary>
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public byte media;
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/// <summary>0x15, Sectors per FAT ? (no FAT found)</summary>
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public ushort spfat;
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/// <summary>0x17, Sectors per track</summary>
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public ushort sptrk;
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/// <summary>0x19, Heads</summary>
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public ushort heads;
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/// <summary>0x1B, unknown, 10 bytes, zero-filled</summary>
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public byte[] unk3;
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/// <summary>0x25, 0x29</summary>
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public byte signature;
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/// <summary>0x26, unknown, zero-filled</summary>
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public uint unk4;
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/// <summary>0x2A, 11 bytes, volume name, space-padded</summary>
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public string vol_name;
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/// <summary>0x35, 8 bytes, "SOL_FS "</summary>
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public string fs_type;
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}
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}
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} |