the file system simulator , JAVA Programming

• Study and enhance the File System Simulator
- See the FS_sim slide deck
• New features
- blockinfo - a new application that displays the information about the blocks in the file system
- ctime - implement ctime (creation time) in the inode
• Test and analysis
- Examine the file system simulator
• Feature 1: blockinfo
- This is a new application for the FS simulator. Its function is to print out the number of data blocks and the number of free blocks in the file system
- You need to write a simple design specification where you describe
• how you find all the data blocks
• how you find all the free blocks
- There are more than one solutions and you can use any solution
- Usage example
java blockinfo
The number of data blocks: 18
The number of free blocks: 5
• Feature 2: ctime
- The ctime is a field in an inode. It is used by the file system to record the creation time of a file (or a directory)
- Detailed design
• Modify the creat method in the Kernel class. Need to record the creation time when this method is called
• Modify ls to display the creation time. Name your ls program myls
- Usage example
java myls
inode_numberr file_size ctime file_name
• Test the FS simulator
- Execute the following commands
1. java mkfs filesys.dat 256 40
2. java mkdir /termproj
3. echo "This is file1, a small file for testing" | java tee /termproj/file1.txt
4. echo "This is a file2, a big file for testing. The cs506 term project is not difficult at all if I work hard on it. I like to work on a project with my friend. I am working hard to complete the project on time with high quality." | java tee /termproj/file2.txt
5. java myls /termproj
6. java myls /termproj/file2
7. java blockinfo filesys.dat
8. java mydump filesys.dat
• Deliverables
- Project report
1. blockinfo design specification
2. Test report
• screen shot of your testing
• answers to the questions, including the dump
- Software - only your code
1. Source file (blockinfo.java, myls.java, kernel.java)
2. Executable file (blockinfo.class, myls.class, kernel.class)

- Answer the following questions
1. What are the block number and address range of the superblock? Explain the content of the superblock.
2. What are the block number and address range of the free list block? Explain the content of the free list block.
3. What are the block number range and the address range of the inode blcoks? How many inodes are used? List all the inodes that are used and their corresponding directories and files. Explain the content of all the inodes.
4. What are the block number and the address range of the data block of directory termproj? Explain the content of this data block.
5. What are the block number and address range of the data block of file file1?
6. What are the block number range and the address range of the data blocks of file file2?

Posted Date: 3/22/2013 4:04:19 AM | Location : United States







Related Discussions:- the file system simulator , Assignment Help, Ask Question on the file system simulator , Get Answer, Expert's Help, the file system simulator Discussions

Write discussion on the file system simulator
Your posts are moderated
Related Questions
Describe Overriding Methods ? Assume that one day you've just finished your Car class. It's been plugged into your traffic simulation that is chugging along merrily simulating

Im not in the line of computer science.But i would like to have some knowledge about the computer language "JAVA".I aldredy learns the computer languages "C,C++".So kindly help me

1. In Java (and OOP), Inheritance includes the concept of super class that is parent class and sub class that is derived class. Explain What is a super class in Java? What is a sub

Need Mahjong puzzle game I want someone to make this game ( Mahjong puzzle game) for me in Android ONLY. If you have high level programming knowledge in Android then please b

Want a ANTI Iframe Breaker Project Description: I want an ANTI Iframe Breaker code made, so that if I'm iframing a site, that contains JavaScript, flash or otherwise, to forc

Obtain ONE of the sample applets from Sun Microsystems' Applets page, or any other source for free Java applets you may wish to use. Test the applet, and link it to Part 2 of your

Explain the Execute phase of Java Program Development Finally in phase computer, under the control of its CPU, interprets program one bytecode at a time. Hence performing

WHY WE USE JAVA IN PROGRAMMING INSTEAD OF OTHER PROGRAMMING LANGUAGE

Luminous Jewels - The Polishing Game Byteland county is very famous for luminous jewels. Luminous jewels are used in making beautiful necklaces. A necklace consists of various lum

SudCell and Simple Sudoku Implementation We describe, fully, the SudCell class that will represent each of the 81 cells or boxes in a Sudoku puzzle.  Then we will