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Add directory entry structure, attributes enumeration, and constants, to FATX filesystem plugin.

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Natalia Portillo
2019-03-26 19:22:57 +00:00
parent 5f68a31fbc
commit 20ebd59181
1 changed files with 36 additions and 6 deletions
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42
DiscImageChef.Filesystems/FATX.cs
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@@ -42,8 +42,10 @@ namespace DiscImageChef.Filesystems
{ {
public class FATX : IFilesystem public class FATX : IFilesystem
{ {
const uint FATX_MAGIC = 0x58544146; const uint FATX_MAGIC = 0x58544146;
const byte UNUSED_DIRENTRY = 0x00;
const byte DELETED_DIRENTRY = 0xE5;
const byte MAX_FILENAME = 42;
public FileSystemType XmlFsType { get; private set; } public FileSystemType XmlFsType { get; private set; }
public Encoding Encoding { get; private set; } public Encoding Encoding { get; private set; }
public string Name => "FATX Filesystem Plugin"; public string Name => "FATX Filesystem Plugin";
@@ -56,9 +58,9 @@ namespace DiscImageChef.Filesystems
byte[] sector = imagePlugin.ReadSector(partition.Start); byte[] sector = imagePlugin.ReadSector(partition.Start);
FATX_Superblock fatxSb = Marshal.ByteArrayToStructureBigEndian<FATX_Superblock>(sector); Superblock sb = Marshal.ByteArrayToStructureBigEndian<Superblock>(sector);
return fatxSb.magic == FATX_MAGIC; return sb.magic == FATX_MAGIC;
} }
public void GetInformation(IMediaImage imagePlugin, Partition partition, out string information, public void GetInformation(IMediaImage imagePlugin, Partition partition, out string information,
@@ -70,7 +72,7 @@ namespace DiscImageChef.Filesystems
byte[] sector = imagePlugin.ReadSector(partition.Start); byte[] sector = imagePlugin.ReadSector(partition.Start);
FATX_Superblock fatxSb = Marshal.ByteArrayToStructureBigEndian<FATX_Superblock>(sector); Superblock fatxSb = Marshal.ByteArrayToStructureBigEndian<Superblock>(sector);
if(fatxSb.magic != FATX_MAGIC) return; if(fatxSb.magic != FATX_MAGIC) return;
@@ -94,12 +96,40 @@ namespace DiscImageChef.Filesystems
} }
[StructLayout(LayoutKind.Sequential, Pack = 1)] [StructLayout(LayoutKind.Sequential, Pack = 1)]
struct FATX_Superblock struct Superblock
{ {
public uint magic; public uint magic;
public uint id; public uint id;
public uint sectorsPerCluster; public uint sectorsPerCluster;
public uint rootDirectoryCluster; public uint rootDirectoryCluster;
public ushort unknown;
}
[StructLayout(LayoutKind.Sequential, Pack = 1)]
struct DirectoryEntry
{
public byte filenameSize;
public Attributes attributes;
[MarshalAs(UnmanagedType.ByValArray, SizeConst = MAX_FILENAME)]
public byte[] filename;
public uint firstCluster;
public uint length;
public ushort lastWrittenTime;
public ushort lastWrittenDate;
public ushort creationTime;
public ushort creationDate;
public ushort lastAccessTime;
public ushort lastAccessDate;
}
[Flags]
enum Attributes : byte
{
ReadOnly = 0x01,
Hidden = 0x02,
System = 0x04,
Directory = 0x10,
Archive = 0x20
} }
} }
} }