FAT32 File System

Operating System/Assignment-4: Created by Dr. Trevor Bakker

Descirption

A user space shell application that interprets FAT32 file system image.

Funtionality

• Opens and closes the FAT32 image file.
• Navigates through the image file and prints out following information in both base 10 and base 16:
  • BPB_BytsPerSec
  • BPB_SecPerClus
  • BPB_RsvdSecCnt
  • BPB_NumFats
  • BPB_FATSz32
• Prints out the attributes and starting cluster number of the file or directory name.
• Retrives the file from the FAT 32 image and places it onto the current working directory.
• Implements "cd" command to change the current working directory - supports relative and absolute paths.
• Implements "ls" command to lists the directory contents.
• Reads from the given file at the position, in bytes, specified by the position parameter annd output the number of bytes specified.

Things I learned

• Structure and information about the boot sector.
• Structure about the individual files in FAT32 system.
• Extracting files from the FAT 32 image file.

Compilation Instructions

The application is built in an omega server at UTA. In terminal:

gcc mfs.c -o mfs 
mfs

Acknowledgements

• Suman Thapa Magar - Team Member
• Dr. Trevor Bakker for providing small stub program to get started and his guidance throughout the assignment.