deallocates inode

must deallocate blocks first
--to be decided if that is within this function or called before

increments free inode count in super and group blocks
frees up the inode

Currently the code does not have comments, we need to add them as we go along and go back and add to previously written code.

create unlink command

verify path is file
decrement inode link by 1
if inode link is 0 deallocate block of inode
then deallocate inode
remove name from parent

link to website follows: http://www.eecs.wsu.edu/~cs360/link_unlink.html

• Fix Times (Stat, Ls)
• Fix Types (Stat, Ls)
• Fix Link
• Start/Finish Unlink
• WTF Is SysLink (Will Figure Out)
• Go Back And Add Comments

We corrected rpwd but have not tested it yet. This can be done today but should be added to the list until is is successfully run a few times.

mkdir and creat are similar so should be done together

link to webpage follows: http://www.eecs.wsu.edu/~cs360/mkdir_creat.html

Remake getino getting rid of KC's code and replacing with our style

EASY function

stat prints the information of the file or directory

prints the following:
file/dir name
size
blocks
IO block
file type
device
inode
linkcount
access permissions
owner as uid
owner as gid
access time
modified time
created time

All of this information is contained within Inode of itself and its parent. I believe a function already exists to get inode's name from parent

create link command
form of link command follows: link oldname newname
creates file with same inode as oldname but with newname
and increments the i_links_count of the oldname inode

link to website follows: http://www.eecs.wsu.edu/~cs360/link_unlink.html

1. Your mkdir/creat may trash the disk iamge (by writing to wrong inode or data
   blocks), which will cause problems later even if your program is correct. So,
   it's better to use a FRESH disk image each time during development.

   Write a sh script "run" or "doit" containing:

     mkfs disk 1440  # renew the disk image file
     a.out
   

   Enter run or doit to test YOUR new a.out, so that you use a NEW disk image
   file each time until YOUR a.out no longer traches the disk image.

2. After running YOUR mkdir/creat commands, it's better to check the results
   under LINUX. Write a sh script "s" containing

     mount -o loop disk /mnt
     ls -l /mnt
     umount /mnt
   

   so that s will show the disk contents under LINUX.

Link: http://www.eecs.wsu.edu/~cs360/mkdir_creat.html

make deallocate block function

deallocates all blocks in the inode
--should only be block 0 for us
----future iterations will deallocate all blocks; i.e. direct, indirect, double indirect, and triple indirect
increments the free block counters

make rmdir
utilize utility function to remove child from parent block

link to website follows: http://www.eecs.wsu.edu/~cs360/rmdir.html

http://www.eecs.wsu.edu/~cs360/link_unlink.html

function will be created in link-unlink.c

check to see if path exists if it does then do the following
chmod changes access permissions of the inode in the i_mode field