A Portable File System using Contiguous Allocation Method for GCP VM
$30-250 USD
Closed
Posted over 5 years ago
$30-250 USD
Paid on delivery
Implement a Portable File System (PFS) with Contiguous Allocation Method, which can perform “Allocate a file”, and “Move files from the Windows file system into your file.” You should have your own directory structure, allocation table, etc. inside your file. Move files back out of your file to the Windows file system or Linux/Unix file system.
When your program is running it should somehow accept the following commands:
open
PFSfile
Allocate a new 10 KByte "PFS" file if it does not
already exist. If it does exist, begin using it for further
commands.
put
myfile
Copy the Windows (or Unix/Linux) file "myfile" into
your PFS file.
get
myfile
Extract file "myfile" from your PFS file and copy it to
the current Windows (or Unix/Linux) directory.
rm
myfile
Delete "myfile" from your PFS file.
dir
List the files in your PFS file.
putr
myfile "Remarks"
Append remarks to the directory entry for myfile in
your PFS file.
kill
PFSfile
Delete the PFSfile from the Windows file system.
quit Exit PFS.
You can provide those commands through command line interface ONLY (No GUI will be accepted).
Limits:
PFS is NOT a memory based file system, but based on the existing file system on your OS, such as Windows or Linux/Unix.
Command-Line Interface (CLI) Only, i.e., [login to view URL] (in Windows) or shell interface (in Unix/Linux). When PFS is executed, it will show the prompt as:
C:\> [login to view URL] PFS> open pfs
Filenames are a maximum of 20 bytes. And, file extension is optional like Unix/Linux.
The directory need handle only Name, Size, Time and Date. For example,
PFS> dir
[login to view URL]
128
bytes
12:30
PM
September 2
[login to view URL]
512
bytes
11:00
AM
November 11
[login to view URL]
1k
bytes
08:52
PM
September 1
. . .
If the original PFS file fills up then you should create a new PFS "volume" with the same name but a different suffix - e.g., pfs.1, pfs.2, etc., each the same size as the first "volume".
Your file system should use Contiguous Allocation for an allocation scheme where “disk block” size is 256 bytes.
In your files system, each file has one File Control Block (FCB) that includes file name, file size, create time, create date, starting block ID, ending block ID and more (if needed).
Your file system should consist of two main parts, i) Directory Structure and ii) Data Blocks. Therefore, you need to define the directory data structure that includes File Control Block (FCB) for each file.
In addition, your files system should be able to manage free blocks. You can use any techniques that you learned in the classroom, such as bit map (vector) or linked free space management. Free block management should be part of directory structure.
You should handle unusual conditions such as trying to put a file into the PFS when a file with that name is already there, file too large to fit into one "volume", etc.
I am very proficient in c and c++. I have 16 years c++ developing experience now, and have worked for more than 7 years. My work is online game developing, and mainly focus on server side, using c++ under Linux environment. I made many great projects using c++, for example, I made the tools which could convert java codes into c++ scripts, of course garbage collection included, this was very similar to a compiler, and was very complex. I also made our own mobile game using c++, I can show you the demo of client, if you like. I am very proficient in java also. I have a very good review on Freelancer.com, I never miss a project once I accept the job, you can check my review. Trust me, please let expert help you.
Hi
Nice to meet you.
I'm senior c++/c# expert.
I have plenty experience of multithreading, opencv, REST api, and entityframework.
I checked your file command requirements.
No problem to implement all commands.
Just let me know if you are interested in me.
Regards.
Lian
Hi, Dear Employer!
How are you?
I am really interested in your project.
I have enough experience on python, C/C++, C#, java programming My sql and LINUX and API expert.
I am 100% sure i can satisfy your requirements perfectly.
User-Friendly Interface And Clear Algorithm Will Encourage Your Project.
I want a long term relationship with you.
Thank you and best regards!
Hello, I've carefully read your project document and fully understood it. I can finish it in 3 days including extra credits part. I assume if there is no contigous block of memory enough for a new file, it will allocate a new volume, correct? We can discuss details in chat.
Best Regards
hello sir
i'm good in c and c++ under both windows and Linux and unix
I make before Portable File System for linux
please sir let me complete your project then you can check it and accept my bid
I will send you executable for windows and for Linux for checking
if you like it you can accept my bid