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REFACTOR: All refactor in DiscImageChef.Filesystems.

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This commit is contained in:
Natalia Portillo
2017-12-22 08:43:22 +00:00
parent ef2fff0abd
commit c59e424ec8
87 changed files with 3834 additions and 4122 deletions
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96
DiscImageChef.Filesystems/extFS.cs
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@@ -32,6 +32,7 @@
using System;
using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;
using System.Text;
using DiscImageChef.CommonTypes;
using DiscImageChef.DiscImages;
@@ -42,47 +43,45 @@ namespace DiscImageChef.Filesystems
// Information from the Linux kernel
public class extFS : Filesystem
{
const int sbPos = 0x400;
const int SB_POS = 0x400;
public extFS()
{
Name = "Linux extended Filesystem";
PluginUUID = new Guid("076CB3A2-08C2-4D69-BC8A-FCAA2E502BE2");
PluginUuid = new Guid("076CB3A2-08C2-4D69-BC8A-FCAA2E502BE2");
CurrentEncoding = Encoding.GetEncoding("iso-8859-15");
}
public extFS(Encoding encoding)
{
Name = "Linux extended Filesystem";
PluginUUID = new Guid("076CB3A2-08C2-4D69-BC8A-FCAA2E502BE2");
if(encoding == null) CurrentEncoding = Encoding.GetEncoding("iso-8859-15");
else CurrentEncoding = encoding;
PluginUuid = new Guid("076CB3A2-08C2-4D69-BC8A-FCAA2E502BE2");
CurrentEncoding = encoding ?? Encoding.GetEncoding("iso-8859-15");
}
public extFS(ImagePlugin imagePlugin, Partition partition, Encoding encoding)
{
Name = "Linux extended Filesystem";
PluginUUID = new Guid("076CB3A2-08C2-4D69-BC8A-FCAA2E502BE2");
if(encoding == null) CurrentEncoding = Encoding.GetEncoding("iso-8859-15");
else CurrentEncoding = encoding;
PluginUuid = new Guid("076CB3A2-08C2-4D69-BC8A-FCAA2E502BE2");
CurrentEncoding = encoding ?? Encoding.GetEncoding("iso-8859-15");
}
public override bool Identify(ImagePlugin imagePlugin, Partition partition)
{
if(imagePlugin.GetSectorSize() < 512) return false;
ulong sbSector = sbPos / imagePlugin.GetSectorSize();
uint sbOff = sbPos % imagePlugin.GetSectorSize();
ulong sbSectorOff = SB_POS / imagePlugin.GetSectorSize();
uint sbOff = SB_POS % imagePlugin.GetSectorSize();
if(sbSector + partition.Start >= partition.End) return false;
if(sbSectorOff + partition.Start >= partition.End) return false;
byte[] sb_sector = imagePlugin.ReadSector(sbSector + partition.Start);
byte[] sbSector = imagePlugin.ReadSector(sbSectorOff + partition.Start);
byte[] sb = new byte[512];
Array.Copy(sb_sector, sbOff, sb, 0, 512);
Array.Copy(sbSector, sbOff, sb, 0, 512);
ushort magic = BitConverter.ToUInt16(sb, 0x038);
return magic == extFSMagic;
return magic == EXT_MAGIC;
}
public override void GetInformation(ImagePlugin imagePlugin, Partition partition,
@@ -94,44 +93,48 @@ namespace DiscImageChef.Filesystems
if(imagePlugin.GetSectorSize() < 512) return;
ulong sbSector = sbPos / imagePlugin.GetSectorSize();
uint sbOff = sbPos % imagePlugin.GetSectorSize();
ulong sbSectorOff = SB_POS / imagePlugin.GetSectorSize();
uint sbOff = SB_POS % imagePlugin.GetSectorSize();
if(sbSector + partition.Start >= partition.End) return;
if(sbSectorOff + partition.Start >= partition.End) return;
byte[] sblock = imagePlugin.ReadSector(sbSector + partition.Start);
byte[] sb_sector = new byte[512];
Array.Copy(sblock, sbOff, sb_sector, 0, 512);
byte[] sblock = imagePlugin.ReadSector(sbSectorOff + partition.Start);
byte[] sbSector = new byte[512];
Array.Copy(sblock, sbOff, sbSector, 0, 512);
extFSSuperBlock ext_sb = new extFSSuperBlock();
extFSSuperBlock extSb = new extFSSuperBlock
{
inodes = BitConverter.ToUInt32(sbSector, 0x000),
zones = BitConverter.ToUInt32(sbSector, 0x004),
firstfreeblk = BitConverter.ToUInt32(sbSector, 0x008),
freecountblk = BitConverter.ToUInt32(sbSector, 0x00C),
firstfreeind = BitConverter.ToUInt32(sbSector, 0x010),
freecountind = BitConverter.ToUInt32(sbSector, 0x014),
firstdatazone = BitConverter.ToUInt32(sbSector, 0x018),
logzonesize = BitConverter.ToUInt32(sbSector, 0x01C),
maxsize = BitConverter.ToUInt32(sbSector, 0x020)
};
ext_sb.inodes = BitConverter.ToUInt32(sb_sector, 0x000);
ext_sb.zones = BitConverter.ToUInt32(sb_sector, 0x004);
ext_sb.firstfreeblk = BitConverter.ToUInt32(sb_sector, 0x008);
ext_sb.freecountblk = BitConverter.ToUInt32(sb_sector, 0x00C);
ext_sb.firstfreeind = BitConverter.ToUInt32(sb_sector, 0x010);
ext_sb.freecountind = BitConverter.ToUInt32(sb_sector, 0x014);
ext_sb.firstdatazone = BitConverter.ToUInt32(sb_sector, 0x018);
ext_sb.logzonesize = BitConverter.ToUInt32(sb_sector, 0x01C);
ext_sb.maxsize = BitConverter.ToUInt32(sb_sector, 0x020);
sb.AppendLine("ext filesystem");
sb.AppendFormat("{0} zones on volume", ext_sb.zones);
sb.AppendFormat("{0} free blocks ({1} bytes)", ext_sb.freecountblk, ext_sb.freecountblk * 1024);
sb.AppendFormat("{0} inodes on volume, {1} free ({2}%)", ext_sb.inodes, ext_sb.freecountind,
ext_sb.freecountind * 100 / ext_sb.inodes);
sb.AppendFormat("First free inode is {0}", ext_sb.firstfreeind);
sb.AppendFormat("First free block is {0}", ext_sb.firstfreeblk);
sb.AppendFormat("First data zone is {0}", ext_sb.firstdatazone);
sb.AppendFormat("Log zone size: {0}", ext_sb.logzonesize);
sb.AppendFormat("Max zone size: {0}", ext_sb.maxsize);
sb.AppendFormat("{0} zones on volume", extSb.zones);
sb.AppendFormat("{0} free blocks ({1} bytes)", extSb.freecountblk, extSb.freecountblk * 1024);
sb.AppendFormat("{0} inodes on volume, {1} free ({2}%)", extSb.inodes, extSb.freecountind,
extSb.freecountind * 100 / extSb.inodes);
sb.AppendFormat("First free inode is {0}", extSb.firstfreeind);
sb.AppendFormat("First free block is {0}", extSb.firstfreeblk);
sb.AppendFormat("First data zone is {0}", extSb.firstdatazone);
sb.AppendFormat("Log zone size: {0}", extSb.logzonesize);
sb.AppendFormat("Max zone size: {0}", extSb.maxsize);
xmlFSType = new FileSystemType();
xmlFSType.Type = "ext";
xmlFSType.FreeClusters = ext_sb.freecountblk;
xmlFSType.FreeClustersSpecified = true;
xmlFSType.ClusterSize = 1024;
xmlFSType.Clusters = (long)((partition.End - partition.Start + 1) * imagePlugin.GetSectorSize() / 1024);
XmlFsType = new FileSystemType
{
Type = "ext",
FreeClusters = extSb.freecountblk,
FreeClustersSpecified = true,
ClusterSize = 1024,
Clusters = (long)((partition.End - partition.Start + 1) * imagePlugin.GetSectorSize() / 1024)
};
information = sb.ToString();
}
@@ -139,11 +142,12 @@ namespace DiscImageChef.Filesystems
/// <summary>
/// ext superblock magic
/// </summary>
const ushort extFSMagic = 0x137D;
const ushort EXT_MAGIC = 0x137D;
/// <summary>
/// ext superblock
/// </summary>
[SuppressMessage("ReSharper", "InconsistentNaming")]
struct extFSSuperBlock
{
/// <summary>0x000, inodes on volume</summary>