Whenever you open a file, describe all the steps that the OS goes through

Whenever you open a file, describe all the steps that the OS goes through
.. directory list, inum, inode, data sector.

Abstractly, Use Filename to search on the directory structure(usually is also inode) to find file’s inode, then check the access mode, if possible, use the pointer on the inode to visit the blocks which stores the files