CS360 LAB6 Check List
DUE: 3-30-2023
Sample solution: ~samples/LAB6/lab6.bin, diskimage
You may download and RUN the sample solution.
Then run YOUR code on the SAME diskimage and Check YOUR outputs.
Check List Points
Total=100
1. start up: MUSt SHOW OUTPUTS AS 10
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dev = 3
check: superblock magic = 0xef53 OK
ninodes=1024 nblocks=4096
bmap=18 imap=19 iblk=20
creating P1 as running process
root shareCount=2
P1 running: input command line [cd|ls|pwd| show|hits|exit] :
------------------------------------------------------------------
2. ls: MUST SHOW OUTPUTS as 10
-----------------------------------------------------------------------
i_block[0] = 148
drwxr-xr-x 4 0 0 Mar 22 15:34:29 2023 1024 . [3 2]
drwxr-xr-x 4 0 0 Mar 22 15:34:29 2023 1024 .. [3 2]
drwxr-xr-x 3 0 0 Mar 22 15:34:29 2023 1024 dir1 [3 11]
drwxr-xr-x 3 0 0 Mar 22 15:34:29 2023 1024 dir2 [3 12]
-rw-r--r-- 1 0 0 Mar 22 15:34:29 2023 0 file1 [3 15]
-rw-r--r-- 1 0 0 Mar 22 15:34:29 2023 0 file2 [3 16]
-----------------------------------------------------------------------
3. show: (show contents of ./) MUST SHOW OUTPUTS as 10
----------------------------------------
i_block[50] = 148
i_number rec_len name_len name
2 12 1 .
2 12 2 ..
11 12 4 dir1
12 12 4 dir2
15 16 5 file1
16 960 5 file2
-----------------------------------------
4. cd /dir1; pwd; ls: MUST SHOW OUTPUTS 20
--------- cd /dir1 ------------
cd to [dev ino]=[3 11]
after cd : cwd = [3 11]
----------- pwd ----------
/dir1
----------- ls ------------
i_block[0] = 162
drwxr-xr-x 3 0 0 Mar 29 08:44:54 2023 1024 . [3 11]
drwxr-xr-x 4 0 0 Mar 29 08:44:54 2023 1024 .. [3 2]
drwxr-xr-x 2 0 0 Mar 29 08:44:54 2023 1024 dir3 [3 13]
5. cd dir3; pwd: MUST SHOW OUTPUTS as 10
-------- cd dir3 ----------
cd to [dev ino]=[3 13]
after cd : cwd = [3 13]
---------------------------
--------- pwd ------------
/dir1/dir3
--------------------------
6. cd ../../; pwd: 10
----- cd ../../ ------
after cd : cwd = [3 2]
----- pwd ------------
/
----------------------
7. cd file1: MUST show: file1 NOT a directory 10
8. hits: MUST SHOW cacheList and hit_ratio: 10
Format of each minode is c#[dev ino]s# = cacheCount[dev ino]shareCount
cacheList=c1[3 12]s0->c1[3 16]s0->c2[3 15]s0->c2[3 13]s0->c6[3 11]s0->c10[3 2]s2->NULL
requests=22 hits=16 hit_ratio=72%
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QUESTIONS to ask students: 10
1. Given: INODEs start block number on disk = 20;
an INODE with INODE number ino = 16.
Which disk block (blk) contains that INODE? blk = ______________________?
In that disk block, which INODE is for ino=16? _________________________?
2. What does MINODE *path2inode(char *path) do? _____________________________?