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REFACTOR: Final cleanup of DiscImageChef.Filesystems.

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This commit is contained in:
Natalia Portillo
2017-12-24 02:37:41 +00:00
parent ec73a6cdc3
commit 4115698ac8
94 changed files with 5196 additions and 5116 deletions
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309
DiscImageChef.Filesystems/ZFS.cs
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@@ -66,164 +66,14 @@ namespace DiscImageChef.Filesystems
const ulong ZEC_MAGIC = 0x0210DA7AB10C7A11;
const ulong ZEC_CIGAM = 0x117A0CB17ADA1002;
struct ZIO_Checksum
{
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)] public ulong[] word;
}
/// <summary>
/// There is an empty ZIO at sector 16 or sector 31, with magic and checksum, to detect it is really ZFS I suppose.
/// </summary>
[StructLayout(LayoutKind.Sequential, Pack = 1)]
struct ZIO_Empty
{
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 472)] public byte[] empty;
public ulong magic;
public ZIO_Checksum checksum;
}
// These parameters define how the nvlist is stored
const byte NVS_LITTLE_ENDIAN = 1;
const byte NVS_BIG_ENDIAN = 0;
const byte NVS_NATIVE = 0;
const byte NVS_XDR = 1;
/// <summary>
/// This structure indicates which encoding method and endianness is used to encode the nvlist
/// </summary>
[StructLayout(LayoutKind.Sequential, Pack = 1)]
struct NVS_Method
{
public byte encoding;
public byte endian;
public byte reserved1;
public byte reserved2;
}
/// <summary>
/// This structure gives information about the encoded nvlist
/// </summary>
[StructLayout(LayoutKind.Sequential, Pack = 1)]
struct NVS_XDR_Header
{
public NVS_Method encodingAndEndian;
public uint version;
public uint flags;
}
enum NVS_DataTypes : uint
{
DATA_TYPE_UNKNOWN = 0,
DATA_TYPE_BOOLEAN,
DATA_TYPE_BYTE,
DATA_TYPE_INT16,
DATA_TYPE_UINT16,
DATA_TYPE_INT32,
DATA_TYPE_UINT32,
DATA_TYPE_INT64,
DATA_TYPE_UINT64,
DATA_TYPE_STRING,
DATA_TYPE_BYTE_ARRAY,
DATA_TYPE_INT16_ARRAY,
DATA_TYPE_UINT16_ARRAY,
DATA_TYPE_INT32_ARRAY,
DATA_TYPE_UINT32_ARRAY,
DATA_TYPE_INT64_ARRAY,
DATA_TYPE_UINT64_ARRAY,
DATA_TYPE_STRING_ARRAY,
DATA_TYPE_HRTIME,
DATA_TYPE_NVLIST,
DATA_TYPE_NVLIST_ARRAY,
DATA_TYPE_BOOLEAN_VALUE,
DATA_TYPE_INT8,
DATA_TYPE_UINT8,
DATA_TYPE_BOOLEAN_ARRAY,
DATA_TYPE_INT8_ARRAY,
DATA_TYPE_UINT8_ARRAY,
DATA_TYPE_DOUBLE
}
/// <summary>
/// This represent an encoded nvpair (an item of an nvlist)
/// </summary>
struct NVS_Item
{
/// <summary>
/// Size in bytes when encoded in XDR
/// </summary>
public uint encodedSize;
/// <summary>
/// Size in bytes when decoded
/// </summary>
public uint decodedSize;
/// <summary>
/// On disk, it is null-padded for alignment to 4 bytes and prepended by a 4 byte length indicator
/// </summary>
public string name;
/// <summary>
/// Data type
/// </summary>
public NVS_DataTypes dataType;
/// <summary>
/// How many elements are here
/// </summary>
public uint elements;
/// <summary>
/// On disk size is relative to <see cref="dataType"/> and <see cref="elements"/> always aligned to 4 bytes
/// </summary>
public object value;
}
[StructLayout(LayoutKind.Sequential, Pack = 1)]
struct DVA
{
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 2)] public ulong[] word;
}
[StructLayout(LayoutKind.Sequential, Pack = 1)]
struct SPA_BlockPointer
{
/// <summary>
/// Data virtual address
/// </summary>
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 3)] public DVA[] dataVirtualAddress;
/// <summary>
/// Block properties
/// </summary>
public ulong properties;
/// <summary>
/// Reserved for future expansion
/// </summary>
public ulong[] padding;
/// <summary>
/// TXG when block was allocated
/// </summary>
public ulong birthTxg;
/// <summary>
/// Transaction group at birth
/// </summary>
public ulong birth;
/// <summary>
/// Fill count
/// </summary>
public ulong fill;
public ZIO_Checksum checksum;
}
const ulong UBERBLOCK_MAGIC = 0x00BAB10C;
[StructLayout(LayoutKind.Sequential, Pack = 1)]
struct ZFS_Uberblock
{
public ulong magic;
public ulong spaVersion;
public ulong lastTxg;
public ulong guidSum;
public ulong timestamp;
public SPA_BlockPointer mosPtr;
public ulong softwareVersion;
}
const uint ZFS_MAGIC = 0x58465342;
public ZFS()
@@ -270,8 +120,7 @@ namespace DiscImageChef.Filesystems
return magic == ZEC_MAGIC || magic == ZEC_CIGAM;
}
public override void GetInformation(ImagePlugin imagePlugin, Partition partition,
out string information)
public override void GetInformation(ImagePlugin imagePlugin, Partition partition, out string information)
{
information = "";
if(imagePlugin.GetSectorSize() < 512) return;
@@ -309,8 +158,7 @@ namespace DiscImageChef.Filesystems
XmlFsType = new FileSystemType {Type = "ZFS filesystem"};
if(decodedNvList.TryGetValue("name", out NVS_Item tmpObj)) XmlFsType.VolumeName = (string)tmpObj.value;
if(decodedNvList.TryGetValue("guid", out tmpObj))
XmlFsType.VolumeSerial = $"{(ulong)tmpObj.value}";
if(decodedNvList.TryGetValue("guid", out tmpObj)) XmlFsType.VolumeSerial = $"{(ulong)tmpObj.value}";
if(decodedNvList.TryGetValue("pool_guid", out tmpObj))
XmlFsType.VolumeSetIdentifier = $"{(ulong)tmpObj.value}";
}
@@ -639,7 +487,8 @@ namespace DiscImageChef.Filesystems
byte[] subListBytes = new byte[item.encodedSize - (offset - currOff)];
Array.Copy(nvlist, offset, subListBytes, 0, subListBytes.Length);
if(DecodeNvList(subListBytes, out Dictionary<string, NVS_Item> subList, true, littleEndian)) item.value = subList;
if(DecodeNvList(subListBytes, out Dictionary<string, NVS_Item> subList, true, littleEndian))
item.value = subList;
else goto default;
offset = (int)(currOff + item.encodedSize);
break;
@@ -849,5 +698,155 @@ namespace DiscImageChef.Filesystems
{
return Errno.NotImplemented;
}
struct ZIO_Checksum
{
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)] public ulong[] word;
}
/// <summary>
/// There is an empty ZIO at sector 16 or sector 31, with magic and checksum, to detect it is really ZFS I suppose.
/// </summary>
[StructLayout(LayoutKind.Sequential, Pack = 1)]
struct ZIO_Empty
{
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 472)] public byte[] empty;
public ulong magic;
public ZIO_Checksum checksum;
}
/// <summary>
/// This structure indicates which encoding method and endianness is used to encode the nvlist
/// </summary>
[StructLayout(LayoutKind.Sequential, Pack = 1)]
struct NVS_Method
{
public byte encoding;
public byte endian;
public byte reserved1;
public byte reserved2;
}
/// <summary>
/// This structure gives information about the encoded nvlist
/// </summary>
[StructLayout(LayoutKind.Sequential, Pack = 1)]
struct NVS_XDR_Header
{
public NVS_Method encodingAndEndian;
public uint version;
public uint flags;
}
enum NVS_DataTypes : uint
{
DATA_TYPE_UNKNOWN = 0,
DATA_TYPE_BOOLEAN,
DATA_TYPE_BYTE,
DATA_TYPE_INT16,
DATA_TYPE_UINT16,
DATA_TYPE_INT32,
DATA_TYPE_UINT32,
DATA_TYPE_INT64,
DATA_TYPE_UINT64,
DATA_TYPE_STRING,
DATA_TYPE_BYTE_ARRAY,
DATA_TYPE_INT16_ARRAY,
DATA_TYPE_UINT16_ARRAY,
DATA_TYPE_INT32_ARRAY,
DATA_TYPE_UINT32_ARRAY,
DATA_TYPE_INT64_ARRAY,
DATA_TYPE_UINT64_ARRAY,
DATA_TYPE_STRING_ARRAY,
DATA_TYPE_HRTIME,
DATA_TYPE_NVLIST,
DATA_TYPE_NVLIST_ARRAY,
DATA_TYPE_BOOLEAN_VALUE,
DATA_TYPE_INT8,
DATA_TYPE_UINT8,
DATA_TYPE_BOOLEAN_ARRAY,
DATA_TYPE_INT8_ARRAY,
DATA_TYPE_UINT8_ARRAY,
DATA_TYPE_DOUBLE
}
/// <summary>
/// This represent an encoded nvpair (an item of an nvlist)
/// </summary>
struct NVS_Item
{
/// <summary>
/// Size in bytes when encoded in XDR
/// </summary>
public uint encodedSize;
/// <summary>
/// Size in bytes when decoded
/// </summary>
public uint decodedSize;
/// <summary>
/// On disk, it is null-padded for alignment to 4 bytes and prepended by a 4 byte length indicator
/// </summary>
public string name;
/// <summary>
/// Data type
/// </summary>
public NVS_DataTypes dataType;
/// <summary>
/// How many elements are here
/// </summary>
public uint elements;
/// <summary>
/// On disk size is relative to <see cref="dataType" /> and <see cref="elements" /> always aligned to 4 bytes
/// </summary>
public object value;
}
[StructLayout(LayoutKind.Sequential, Pack = 1)]
struct DVA
{
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 2)] public ulong[] word;
}
[StructLayout(LayoutKind.Sequential, Pack = 1)]
struct SPA_BlockPointer
{
/// <summary>
/// Data virtual address
/// </summary>
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 3)] public DVA[] dataVirtualAddress;
/// <summary>
/// Block properties
/// </summary>
public ulong properties;
/// <summary>
/// Reserved for future expansion
/// </summary>
public ulong[] padding;
/// <summary>
/// TXG when block was allocated
/// </summary>
public ulong birthTxg;
/// <summary>
/// Transaction group at birth
/// </summary>
public ulong birth;
/// <summary>
/// Fill count
/// </summary>
public ulong fill;
public ZIO_Checksum checksum;
}
[StructLayout(LayoutKind.Sequential, Pack = 1)]
struct ZFS_Uberblock
{
public ulong magic;
public ulong spaVersion;
public ulong lastTxg;
public ulong guidSum;
public ulong timestamp;
public SPA_BlockPointer mosPtr;
public ulong softwareVersion;
}
}
}