How to Read file data in LINUX

How to Read file data in LINUX-General Linux technology-Linux programming and kernel information. This is my WINDOWS. execution passed,

Push 0
Push 80
Push 3
Push 0
Push 1
Push 80000000
Push 00478924; ASCII "c: \ windows \ neptune. dat" file to be read
Call Put the file return handle in EAX.
Push 51BF
Mov edx, esp
Push 0
Push edx
Push 51BF data size
Push esi ESI is the data writing location,
Push eax
Call

In this way, all the file data is read into the ESI address.

What I want to know is what functions should be used in LINUX and how to implement the above functions .....