How to access files while working at kernel level?

From: Vineet Joglekar (vinzip_at_indiatimes.com)
Date: 05/30/04 

Date: 30 May 2004 07:15:29 -0700

Hi all,

If I am working at kernel level, what functions do I have for the file
operations? I was under impression that normal open, read calls wont
work as they r library routines. will the system calls sys_open and
all work? maybe I should try that first and then post a question, but
I dont have access to linux machine at this moment, so sorry for this
naive question.

Thanks and regards,

Vineet