* used in query file system information operations, with constants for information levels.
 *
 * @author mbechler
 */
public interface FileSystemInformation extends Decodable {

    /**
     * SMB information allocation constant.
     */
    byte SMB_INFO_ALLOCATION = -1;

    /**
     * File system size information constant.
     */

    }

    /**
     * @param il
     * @return
     */
    private static int mapInformationLevel(final int il) {
        switch (il) {
        case FileSystemInformation.SMB_INFO_ALLOCATION:
            return 0x1;
        case FileSystemInformation.FS_SIZE_INFO:
            return 0x103;
        }
        throw new IllegalArgumentException("Unhandled information level");
    }

    @Override

     */
    private static Decodable createFilesystemInformation(final byte infoClass) throws SMBProtocolDecodingException {
        return switch (infoClass) {
        case FileSystemInformation.FS_FULL_SIZE_INFO -> new FileFsFullSizeInformation();
        case FileSystemInformation.FS_SIZE_INFO -> new FileFsSizeInformation();
        default -> throw new SMBProtocolDecodingException("Unknown filesystem info class " + infoClass);
        };
    }

        AllocInfo inf;
        switch (this.informationLevel) {
        case FileSystemInformation.SMB_INFO_ALLOCATION:
            inf = new SmbInfoAllocation();
            break;
        case FileSystemInformation.FS_SIZE_INFO:
            inf = new FileFsSizeInformation();
            break;
        case FileSystemInformation.FS_FULL_SIZE_INFO:
            inf = new FileFsFullSizeInformation();
            break;

 * actual free allocation units, sectors per allocation unit, and bytes per sector.
 */
public class FileFsFullSizeInformation implements AllocInfo, FileSystemInformation, Decodable {

    private long alloc; // Also handles SmbQueryFSSizeInfo
    private long free;
    private int sectPerAlloc;
    private int bytesPerSect;

    /**

    /**
     * Default constructor for decoding file system size information.
     */
    public FileFsSizeInformation() {
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.internal.fscc.FileSystemInformation#getFileSystemInformationClass()
     */
    @Override
    public byte getFileSystemInformationClass() {
        return FS_SIZE_INFO;
    }

    @Override
    public long getCapacity() {

 */
package jcifs.internal;

import jcifs.internal.fscc.FileSystemInformation;

/**
 * Interface for file system allocation information providing capacity and free space details.
 * Used in SMB protocol operations to query disk space information from remote SMB shares.
 *
 * @author mbechler
 */
public interface AllocInfo extends FileSystemInformation {

    /**
     * Gets the total capacity of the allocation.
     *

    private int sectPerAlloc;
    private int bytesPerSect;

    /**
     * {@inheritDoc}
     *
     * @see jcifs.internal.fscc.FileSystemInformation#getFileSystemInformationClass()
     */
    @Override
    public byte getFileSystemInformationClass() {
        return FileSystemInformation.SMB_INFO_ALLOCATION;
    }

    @Override
    public long getCapacity() {