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328 lines
13 KiB
C#
328 lines
13 KiB
C#
// /***************************************************************************
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// The Disc Image Chef
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// ----------------------------------------------------------------------------
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//
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// Filename : VxFS.cs
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// Author(s) : Natalia Portillo <claunia@claunia.com>
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//
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// Component : Veritas File System plugin.
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//
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// --[ Description ] ----------------------------------------------------------
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//
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// Identifies the Veritas file system 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 © 2011-2017 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.Runtime.InteropServices;
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using System.Text;
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using DiscImageChef.CommonTypes;
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namespace DiscImageChef.Filesystems
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{
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public class VxFS : Filesystem
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{
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public VxFS()
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{
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Name = "Veritas filesystem";
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PluginUUID = new Guid("EC372605-7687-453C-8BEA-7E0DFF79CB03");
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CurrentEncoding = Encoding.UTF8;
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}
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public VxFS(ImagePlugins.ImagePlugin imagePlugin, Partition partition, Encoding encoding)
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{
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Name = "Veritas filesystem";
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PluginUUID = new Guid("EC372605-7687-453C-8BEA-7E0DFF79CB03");
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if(encoding == null)
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CurrentEncoding = Encoding.UTF8;
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else
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CurrentEncoding = encoding;
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}
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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struct VxSuperBlock
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{
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/// <summary>Magic number</summary>
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public uint vs_magic;
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/// <summary>VxFS version</summary>
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public int vs_version;
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/// <summary>create time - secs</summary>
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public uint vs_ctime;
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/// <summary>create time - usecs</summary>
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public uint vs_cutime;
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/// <summary>unused</summary>
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public int __unused1;
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/// <summary>unused</summary>
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public int __unused2;
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/// <summary>obsolete</summary>
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public int vs_old_logstart;
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/// <summary>obsolete</summary>
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public int vs_old_logend;
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/// <summary>block size</summary>
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public int vs_bsize;
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/// <summary>number of blocks</summary>
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public int vs_size;
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/// <summary>number of data blocks</summary>
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public int vs_dsize;
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/// <summary>obsolete</summary>
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public uint vs_old_ninode;
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/// <summary>obsolete</summary>
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public int vs_old_nau;
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/// <summary>unused</summary>
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public int __unused3;
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/// <summary>obsolete</summary>
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public int vs_old_defiextsize;
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/// <summary>obsolete</summary>
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public int vs_old_ilbsize;
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/// <summary>size of immediate data area</summary>
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public int vs_immedlen;
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/// <summary>number of direct extentes</summary>
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public int vs_ndaddr;
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/// <summary>address of first AU</summary>
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public int vs_firstau;
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/// <summary>offset of extent map in AU</summary>
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public int vs_emap;
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/// <summary>offset of inode map in AU</summary>
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public int vs_imap;
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/// <summary>offset of ExtOp. map in AU</summary>
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public int vs_iextop;
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/// <summary>offset of inode list in AU</summary>
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public int vs_istart;
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/// <summary>offset of fdblock in AU</summary>
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public int vs_bstart;
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/// <summary>aufirst + emap</summary>
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public int vs_femap;
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/// <summary>aufirst + imap</summary>
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public int vs_fimap;
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/// <summary>aufirst + iextop</summary>
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public int vs_fiextop;
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/// <summary>aufirst + istart</summary>
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public int vs_fistart;
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/// <summary>aufirst + bstart</summary>
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public int vs_fbstart;
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/// <summary>number of entries in indir</summary>
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public int vs_nindir;
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/// <summary>length of AU in blocks</summary>
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public int vs_aulen;
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/// <summary>length of imap in blocks</summary>
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public int vs_auimlen;
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/// <summary>length of emap in blocks</summary>
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public int vs_auemlen;
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/// <summary>length of ilist in blocks</summary>
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public int vs_auilen;
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/// <summary>length of pad in blocks</summary>
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public int vs_aupad;
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/// <summary>data blocks in AU</summary>
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public int vs_aublocks;
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/// <summary>log base 2 of aublocks</summary>
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public int vs_maxtier;
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/// <summary>number of inodes per blk</summary>
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public int vs_inopb;
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/// <summary>obsolete</summary>
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public int vs_old_inopau;
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/// <summary>obsolete</summary>
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public int vs_old_inopilb;
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/// <summary>obsolete</summary>
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public int vs_old_ndiripau;
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/// <summary>size of indirect addr ext.</summary>
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public int vs_iaddrlen;
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/// <summary>log base 2 of bsize</summary>
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public int vs_bshift;
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/// <summary>log base 2 of inobp</summary>
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public int vs_inoshift;
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/// <summary>~( bsize - 1 )</summary>
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public int vs_bmask;
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/// <summary>bsize - 1</summary>
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public int vs_boffmask;
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/// <summary>old_inopilb - 1</summary>
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public int vs_old_inomask;
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/// <summary>checksum of V1 data</summary>
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public int vs_checksum;
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/// <summary>number of free blocks</summary>
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public int vs_free;
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/// <summary>number of free inodes</summary>
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public int vs_ifree;
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/// <summary>number of free extents by size</summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)]
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public int[] vs_efree;
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/// <summary>flags ?!?</summary>
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public int vs_flags;
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/// <summary>filesystem has been changed</summary>
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public byte vs_mod;
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/// <summary>clean FS</summary>
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public byte vs_clean;
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/// <summary>unused</summary>
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public ushort __unused4;
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/// <summary>mount time log ID</summary>
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public uint vs_firstlogid;
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/// <summary>last time written - sec</summary>
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public uint vs_wtime;
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/// <summary>last time written - usec</summary>
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public uint vs_wutime;
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/// <summary>FS name</summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 6)]
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public byte[] vs_fname;
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/// <summary>FS pack name</summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 6)]
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public byte[] vs_fpack;
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/// <summary>log format version</summary>
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public int vs_logversion;
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/// <summary>unused</summary>
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public int __unused5;
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/// <summary>OLT extent and replica</summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 2)]
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public int[] vs_oltext;
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/// <summary>OLT extent size</summary>
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public int vs_oltsize;
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/// <summary>size of inode map</summary>
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public int vs_iauimlen;
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/// <summary>size of IAU in blocks</summary>
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public int vs_iausize;
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/// <summary>size of inode in bytes</summary>
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public int vs_dinosize;
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/// <summary>indir levels per inode</summary>
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public int vs_old_dniaddr;
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/// <summary>checksum of V2 RO</summary>
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public int vs_checksum2;
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}
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/// <summary>
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/// Identifier for VxFS
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/// </summary>
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const uint VxFS_MAGIC = 0xA501FCF5;
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const uint VxFS_Base = 0x400;
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public override bool Identify(ImagePlugins.ImagePlugin imagePlugin, Partition partition)
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{
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ulong vmfsSuperOff = VxFS_Base / imagePlugin.ImageInfo.sectorSize;
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if(partition.Start + vmfsSuperOff >= partition.End)
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return false;
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byte[] sector = imagePlugin.ReadSector(partition.Start + vmfsSuperOff);
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uint magic = BitConverter.ToUInt32(sector, 0x00);
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return magic == VxFS_MAGIC;
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}
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public override void GetInformation(ImagePlugins.ImagePlugin imagePlugin, Partition partition, out string information)
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{
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ulong vmfsSuperOff = VxFS_Base / imagePlugin.ImageInfo.sectorSize;
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byte[] sector = imagePlugin.ReadSector(partition.Start + vmfsSuperOff);
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VxSuperBlock vxSb = new VxSuperBlock();
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IntPtr vxSbPtr = Marshal.AllocHGlobal(Marshal.SizeOf(vxSb));
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Marshal.Copy(sector, 0, vxSbPtr, Marshal.SizeOf(vxSb));
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vxSb = (VxSuperBlock)Marshal.PtrToStructure(vxSbPtr, typeof(VxSuperBlock));
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Marshal.FreeHGlobal(vxSbPtr);
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StringBuilder sbInformation = new StringBuilder();
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sbInformation.AppendLine("Veritas file system");
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sbInformation.AppendFormat("Volume version {0}", vxSb.vs_version).AppendLine();
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sbInformation.AppendFormat("Volume name {0}", StringHandlers.CToString(vxSb.vs_fname, CurrentEncoding)).AppendLine();
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sbInformation.AppendFormat("Volume has {0} blocks of {1} bytes each", vxSb.vs_bsize, vxSb.vs_size).AppendLine();
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sbInformation.AppendFormat("Volume has {0} inodes per block", vxSb.vs_inopb).AppendLine();
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sbInformation.AppendFormat("Volume has {0} free inodes", vxSb.vs_ifree).AppendLine();
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sbInformation.AppendFormat("Volume has {0} free blocks", vxSb.vs_free).AppendLine();
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sbInformation.AppendFormat("Volume created on {0}", DateHandlers.UNIXUnsignedToDateTime(vxSb.vs_ctime, vxSb.vs_cutime)).AppendLine();
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sbInformation.AppendFormat("Volume last modified on {0}", DateHandlers.UNIXUnsignedToDateTime(vxSb.vs_wtime, vxSb.vs_wutime)).AppendLine();
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if(vxSb.vs_clean != 0)
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sbInformation.AppendLine("Volume is dirty");
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information = sbInformation.ToString();
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xmlFSType = new Schemas.FileSystemType();
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xmlFSType.Type = "Veritas file system";
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xmlFSType.CreationDate = DateHandlers.UNIXUnsignedToDateTime(vxSb.vs_ctime, vxSb.vs_cutime);
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xmlFSType.CreationDateSpecified = true;
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xmlFSType.ModificationDate = DateHandlers.UNIXUnsignedToDateTime(vxSb.vs_wtime, vxSb.vs_wutime);
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xmlFSType.ModificationDateSpecified = true;
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xmlFSType.Clusters = vxSb.vs_size;
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xmlFSType.ClusterSize = vxSb.vs_bsize;
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xmlFSType.Dirty = vxSb.vs_clean != 0;
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xmlFSType.FreeClusters = vxSb.vs_free;
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xmlFSType.FreeClustersSpecified = true;
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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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}
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} |