116 lines
5.6 KiB
Java
Executable File
116 lines
5.6 KiB
Java
Executable File
/******************************************************************************
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* Benix 0.8 *
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* Copyright © 2015 Ben Goldsworthy (rumps) *
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* *
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* A program to simulate an OS and read a file store. *
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* *
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* This file is part of Benix. *
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* *
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* Benix is free software: you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation, either version 3 of the License, or *
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* (at your option) any later version. *
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* *
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* Benix is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with Benix. If not, see <http://www.gnu.org/licenses/>. *
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******************************************************************************/
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/**
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** This class represents an inode.
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**/
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import java.util.Date;
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/**
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** @author Ben Goldsworthy (rumps) <me+benix@bengoldsworthy.net>
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** @version 0.8
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**/
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public class Inode {
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private short fileMode, uID, gID, hardLinks;
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private int fileSizeLower, indirectPointer, dIndirectPointer,
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tIndirectPointer, fileSizeUpper;
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private Date lastAccessed, creationTime, lastModified, deletionTime;
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private int[] blockPointers = new int[12];
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/**
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** Constructor method.
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**
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** @param fileMode The file mode.
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** @param uID The owner user ID.
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** @param fileSizeLower The lower 32 bits of the file size.
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** @param lastAccessed The time of last access.
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** @param creationTime The time of creation.
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** @param lastModified The time of last modification.
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** @param deletionTime The time of deletion.
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** @param gID The owner group ID.
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** @param hardLinks The number of hard links to the file.
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** @param blockPointers The twelve block pointers.
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** @param indirectPointer The indirect block pointer.
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** @param dIndirectPointer The double indirect block pointer.
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** @param tIndirectPointer The triple indirect block pointer.
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** @param fileSizeUpper The upper 32 bits of the file size.
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** @param debug Whether debug mode is active or not.
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**/
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public Inode(short fileMode, short uID, int fileSizeLower, int lastAccessed,
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int creationTime, int lastModified, int deletionTime, short gID,
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short hardLinks, int blockPointers[], int indirectPointer,
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int dIndirectPointer, int tIndirectPointer, int fileSizeUpper,
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boolean debug) {
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this.fileMode = fileMode;
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this.uID = uID;
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this.fileSizeLower = fileSizeLower;
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this.lastAccessed = new Date((long)lastAccessed * 1000);
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this.creationTime = new Date((long)creationTime * 1000);
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this.lastModified = new Date((long)lastModified * 1000);
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this.deletionTime = (deletionTime != 0) ? new Date((long)deletionTime * 1000) : null;
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this.gID = gID;
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this.hardLinks = hardLinks;
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this.blockPointers = blockPointers;
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this.indirectPointer = indirectPointer;
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this.dIndirectPointer = dIndirectPointer;
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this.tIndirectPointer = tIndirectPointer;
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this.fileSizeUpper = fileSizeUpper;
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if (debug) {
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System.out.println("-----Values read from inode-----");
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System.out.println("File Mode: " + this.fileMode);
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System.out.println("Owner User ID: " + this.uID);
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System.out.println("File Size (lower 32-bits): " + this.fileSizeLower);
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System.out.println("File Size (upper 32-bits): " + this.fileSizeUpper);
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System.out.println("Last Accessed Time: " + this.lastAccessed);
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System.out.println("Creation Time: " + this.creationTime);
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System.out.println("Last Modify Time: " + this.lastModified);
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System.out.println("Deletion Time: " + this.deletionTime);
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System.out.println("Owner Group ID: " + this.gID);
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for (int i = 0; i < 12; i++) System.out.println("Block Pointer " + i + ": " + this.blockPointers[i]);
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System.out.println("Indirect Pointer: " + this.indirectPointer);
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System.out.println("Double Indirect Pointer: " + this.dIndirectPointer);
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System.out.println("Triple Indirect Pointer: " + this.tIndirectPointer);
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System.out.println("-------------------------------------");
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}
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}
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/**
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* Accessor function.
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*
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* @param blockID The index of the block.
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* @return The block pointer.
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*/
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public int getBlockPointer(int blockID) {
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return this.blockPointers[blockID];
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}
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/**
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* Accessor function.
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*
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* @return The lower 32 bits of the filesize.
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*/
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public int getFileSizeLower() {
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return this.fileSizeLower;
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}
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}
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