CS360 Final Project Demo Instructions

DATE and TIME: 4-26-2023 and 4-27-2023; Time as posted by TAs

 1. Organize YOUR source code to contain the following files: NO EXCEPTIONs!!!
   
   level-1:
      type.h, util.c (as posted)
      main.c         : initilization, mountroot, command processing loop
      alloc_dealloc.c: ialloc/idealloc, balloc/bdealloc functions
      cd_ls_pwd.c    : ls, cd, pwd 
      mkdir_creat.c  : mkdir, creat, enter_name
      rmdir.c        : rmdir, rm_child 
      link_unlink.c  : link, unlink
      symlink.c      : symlink, readlink 
      OTHERs if you have
 
   level-2:
      open_close.c   : open, close, lseek, pfd
      read.c         : read  (with I and D blocks AND optimization)
      write.c        : write (with I and D blocks AND optimization)
      cat_cp.c       : cat, cp
      head_tail.c    : head, tail

Submit a NAMEs.zip file to TA BEFORE the DEMO time, where NAMEs are LASTnames
of all team members, e.g.  logan-west.zip        

 
WARNING: academic honesty: absolutely NO COPYING !!!
If you got source code from somewhere, you must acknowledge it by citing the source.
 
Interview with KCW via ZOOM immediately following YOUR demo with TA

In order to speed up the interview, please be ready to show your code:

                      LEVEL-2:
open : your open file code
read : Indirect and Double Indirect data blocks; optimization code
write: Indirect and Double Indirect data blocks; optimization code
head : your code and algorithm
tail : your code and algorithm

All team members must be present during interview with KCW.
Prepare yourself for the interview by trying to EXPLAIN how did your code

       open  file for R of W
       how did you handle I, D blocks in read(), write()
       how did you do     tail filename?

NOTE: TO explain is NOT to read your code line by line !!!!! 
EXAMPLE: open file for WRITE:
         get file's INODE into memory: HOW ?_________________________
         what if file does NOT exist?  _____________________________
         What if file exists and have data blocks?__________________

allocate an OFT; record open mode, MINODE pointer, offset
find smallest NULL fd[index] and let it point at OFT
return index as opened file descriptor


         If KCW wants more detail, he will ask further questions.

3. Download ALL files from samples/PROJECT/
   Yout MUST use the diskimage   disk2  in your DEMO.

   You may veiw the contents of disk2 by   show disk2

4. TO save DEMO time, run you project as 
      a.out disk2

5. Download disk2, diff2, head_tail from samples/PROJECT directory

5. DEMO RECORD: Copy/Paste the following DEMO record as a .txt file.
   Fill in your names and IDs. return it to TA before 4-26-2023
   This will be YOUR DEMO record.


NAME________________ ID________________  NAME_______________ ID______________


LEVEL-2: Use disk2: (file1, tiny, small, large, huge)        TA COMMENTS    

------------------        ---------------------------   -----------------------
cat large                 show file contents          ________________________10

cat huge                  show file contents          ________________________10

head small                show FIRST 10 lines of file ________________________10

tail small                show LAST 10 lines of file  ________________________10

cp large newlarge; ls     show they are SAME size     ________________________10

cp huge  newhuge ; ls     show they are SAME size     ________________________20

cp large newlarge      MUST truncate newlarge first  _________________________ 5

------------------------------------------------------------------------------
              MUST DO THIS: exit YOUR project 

(In Linux): diff2         MUST not show any lines   __________________________20 

(in Linux): head_tail     MUST be same as YOURs     ___________________________5

============ DONE if you can do the above ============================ Total 100


============ IF can not do cat, cp: TRY to do these for LEVEL2 ===============

open  small 0;   pfd      show fd=0 opened for R      ________________________10

read 0 20;       pfd      show 20 chars read          ________________________10

open file1 1;    pfd      show fd=1 opened for W      ________________________10

write 1 "abcde"; ls       show file1 size=5           ________________________10

close 1; pfd              show fd=1 is closed         ________________________10
                                                                      Total   50
==============================================================================

sample solution: samples/PROJECT/l2.bin, disk2, diff2, head_tail, show

samples/PROJECT/outfile is recorded outputs of running the commands

ls
head small
tail small
cp large newlarge; ls
cp huge  newhuge;  ls

cp large newlarge; ls  (to show deallocate blocks by truncate())

exit

------ back to Linux ---------
(Linux) diff2
(Linux) head_tail
------------------------------