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Kernel001WalkThrough

Kernel 0.01 Walkthrough.

After downloading Kernel 0.01 and unpacking the archive, you'll be facing a directory "linux" containing, in subdirectories, some 5900 lines of (more or less) ANSI C, around 2500 lines of C headers (#include files) and around 1450 lines of i386 assembler.

The linux 0.01 kernel source is at http://www.kernel.org/pub/linux/kernel/Historic/

The code directories are as follows. Click on the Details column for more information.

Name

Purpose

Details

boot

Kernel bootstrap code

BootDetails

fs

File system

FsDetails

include

Header files

HeaderDetails

init

init process-the first process executed by a UNIX system

InitDetails

kernel

System calls

KernelDetails

lib

Library code

LibDetails

mm

Memory management

MmDetails

tools

Program that splices three images together into a kernel image that can be booted from PC BIOS startup

ToolsDetails

The header files are not the standard header files, because when you're working on a kernel you don't have the luxury of the usual C functions--you have to write your own versions.

The kernel directory contains most of the system functions, but some of them (like sys_fcntl()) are in the file system directory.

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last edited 2004-12-20 03:41:10 by RikvanRiel