Moon-FS: File System of Unix-Like OS

Brief intro

This is a secondary file system of a unix-like operating system, a file "Disk.img" with 64MB memory space is used to simulate a disk device.

Usage

git clone https://github.com/Moondok/Moon-FS.git
cd Moon-FS
mkdir build && cd build 
cmake ..  && make
./Moon_FS

Test

you can test our file system via following test cases.

• make directories

cd home
mkdir texts
mkdir reports
mkdir photos

• test small/medium/large files

test image
test doc
test readme

note that the instruction test is specially designed for testing the system.

• create/open/write/read a file

in the following case, we create a file with a size of 800B, then we read 500 bytes from the position 500(300B in fact), then we write these 300B into the end of the file. Thus finally the size of the file will be 1100B.

cd ../
mkdir test
touch test/Jerry
open test/Jerry rw
write 0
800
00234567890123456789022345678903234567890423456789052345678906234567890723456789082345678909234567891023456789112345678912234567891323456789142345678915234567891623456789172345678918234567891923456789202345678921234567892223456789232345678924234567892523456789262345678927234567892823456789292345678930234567893123456789322345678933234567893423456789352345678936234567893723456789382345678939234567894023456789412345678942234567894323456789442345678945234567894623456789472345678948234567894923456789502345678951234567895223456789532345678954234567895523456789562345678957234567895823456789592345678960234567896123456789622345678963234567896423456789652345678966234567896723456789682345678969234567897023456789712345678972234567897323456789742345678975234567897623456789772345678978234567897923456789

seekp 0 500 0
read 0
500

write 0
300
502345678951234567895223456789532345678954234567895523456789562345678957234567895823456789592345678960234567896123456789622345678963234567896423456789652345678966234567896723456789682345678969234567897023456789712345678972234567897323456789742345678975234567897623456789772345678978234567897923456789

seekp 0 0 0
read 0
1100 

close 0

Checklist

• mkdir
• ls
• touch
• stat
• mv
• cd
• cp
• multi-users support

In progress ...