internal static UnixFileType FileTypeFromInodeType(InodeType inodeType)
{
switch (inodeType)
{
case InodeType.BlockDevice:
case InodeType.ExtendedBlockDevice:
return UnixFileType.Block;
case InodeType.CharacterDevice:
case InodeType.ExtendedCharacterDevice:
return UnixFileType.Character;
case InodeType.Directory:
case InodeType.ExtendedDirectory:
return UnixFileType.Directory;
case InodeType.Fifo:
case InodeType.ExtendedFifo:
return UnixFileType.Fifo;
case InodeType.File:
case InodeType.ExtendedFile:
return UnixFileType.Regular;
case InodeType.Socket:
case InodeType.ExtendedSocket:
return UnixFileType.Socket;
case InodeType.Symlink:
case InodeType.ExtendedSymlink:
return UnixFileType.Link;
default:
throw new NotSupportedException("Unrecognized inode type: " + inodeType);
}
}
public virtual int ReadFrom(byte[] buffer, int offset)
{
Type = (InodeType)Utilities.ToUInt16LittleEndian(buffer, offset + 0);
Mode = Utilities.ToUInt16LittleEndian(buffer, offset + 2);
UidKey = Utilities.ToUInt16LittleEndian(buffer, offset + 4);
GidKey = Utilities.ToUInt16LittleEndian(buffer, offset + 6);
ModificationTime = Utilities.DateTimeFromUnix(Utilities.ToUInt32LittleEndian(buffer, offset + 8));
InodeNumber = Utilities.ToUInt32LittleEndian(buffer, offset + 12);
return(16);
}
public virtual int ReadFrom(byte[] buffer, int offset)
{
Type = (InodeType)Utilities.ToUInt16LittleEndian(buffer, offset + 0);
Mode = Utilities.ToUInt16LittleEndian(buffer, offset + 2);
UidKey = Utilities.ToUInt16LittleEndian(buffer, offset + 4);
GidKey = Utilities.ToUInt16LittleEndian(buffer, offset + 6);
ModificationTime = Utilities.DateTimeFromUnix(Utilities.ToUInt32LittleEndian(buffer, offset + 8));
InodeNumber = Utilities.ToUInt32LittleEndian(buffer, offset + 12);
return 16;
}
public virtual int ReadFrom(byte[] buffer, int offset)
{
Type = (InodeType)EndianUtilities.ToUInt16LittleEndian(buffer, offset + 0);
Mode = EndianUtilities.ToUInt16LittleEndian(buffer, offset + 2);
UidKey = EndianUtilities.ToUInt16LittleEndian(buffer, offset + 4);
GidKey = EndianUtilities.ToUInt16LittleEndian(buffer, offset + 6);
ModificationTime = ((long)EndianUtilities.ToUInt32LittleEndian(buffer, offset + 8)).FromUnixTimeSeconds().DateTime;
InodeNumber = EndianUtilities.ToUInt32LittleEndian(buffer, offset + 12);
return(16);
}
private static Inode InstantiateType(InodeType type)
{
switch (type)
{
case InodeType.Directory:
return(new DirectoryInode());
case InodeType.ExtendedDirectory:
return(new ExtendedDirectoryInode());
case InodeType.File:
return(new RegularInode());
case InodeType.Symlink:
return(new SymlinkInode());
case InodeType.CharacterDevice:
case InodeType.BlockDevice:
return(new DeviceInode());
default:
throw new NotImplementedException("Inode type not implemented: " + type);
}
}
public static Inode Read(MetablockReader inodeReader)
{
byte[] typeData = new byte[2];
if (inodeReader.Read(typeData, 0, 2) != 2)
{
throw new IOException("Unable to read Inode type");
}
InodeType type = (InodeType)Utilities.ToUInt16LittleEndian(typeData, 0);
Inode inode = InstantiateType(type);
byte[] inodeData = new byte[inode.Size];
inodeData[0] = typeData[0];
inodeData[1] = typeData[1];
if (inodeReader.Read(inodeData, 2, inode.Size - 2) != inode.Size - 2)
{
throw new IOException("Unable to read whole Inode");
}
inode.ReadFrom(inodeData, 0);
return(inode);
}
private static Inode InstantiateType(InodeType type)
{
switch (type)
{
case InodeType.Directory:
return new DirectoryInode();
case InodeType.ExtendedDirectory:
return new ExtendedDirectoryInode();
case InodeType.File:
return new RegularInode();
case InodeType.Symlink:
return new SymlinkInode();
case InodeType.CharacterDevice:
case InodeType.BlockDevice:
return new DeviceInode();
default:
throw new NotImplementedException("Inode type not implemented: " + type);
}
}
