CS代考 COMP 3430 Guderian

Operating Systems
COMP 3430 Guderian

UFS deep dive

Copyright By PowCoder代写 加微信 powcoder

superblock/inodes/data

to define spaces for each

Index nodes, indexing files on the drive… And everything is a file.

All iNodes are at the top of the disk How do we know which are available?

iNodes have data about the address of the data
a directory is a… file, points to a bunch of blocks a file a a file… file… points to a bunch of blocks
Blocks have the data (later in the drive), inodes hold a list of the blocks used by this file

Big files!
… if they¡¯re too many it has a pointer to a block that has list a of blocks (indirect)
double indirect is a pointer to indirect blocks

Big files!
… if they¡¯re too many it has a pointer to a block that has list a of blocks (indirect)
double indirect is a pointer to indirect blocks triply… guess what…

Blocks/data section
Too many blocks to address
Create groups of blocks (sectors), and address those

What does a directory look like

What does a directory look
Has an inode

What does a directory look like
Has an inode
The data is a list of contents, which point to inodes of those files

Questions…
Where are the ACLs?

程序代写 CS代考 加微信: powcoder QQ: 1823890830 Email: powcoder@163.com