Minix Source Code Hierarchy

Minix Source Code Hierarchy

This manual will illustrate as to the source code hierarchy for the Minix Operating

system. I have illustrated the important directories and their functions, which will help

you to get an overall picture of the operating system hierarchy.

·  disks

This contains your copy of the root file system, disks/root, as well as symbolic

links to the shared /usr/bin and /usr/man file systems.

·  include

This contains your copies of the system-wide include files for the Minix operating

system, the Minix library calls, and any Minix user programs. You will typically

have to modify some of these include files.

·  lib

Your copy of the compiled C library routines. Source code for these compiled

libraries is located in src/lib.

·  src

Your src directory holds your copy of all of the Minix source code. The

subdirectories of src are described below.

o src/commands

This contains the source code for all Minix commands (such as more, ls,

who, etc.)

·  src/etc

This contains copies of the contents of the /etc directory in your root file

system. These files also appear in the /etc directory in your Minix root file

system.

·  src/fs

This contains the file system source code, for the FS server process.

·  src/inet

This contains the network system source code, for the INET server

process.

·  src/kernel

This contains the source code for the Minix kernel, including the system

tasks and the process management layer beneath them.

·  src/mm

This contains the memory manager source code, for the MM server

process.

·  src/lib

This contains the source code for the C library routines that are available

to a Minix user program. For some projects, you will change a few of

these files to add new system calls to Minix. This directory includes:

o src/lib/ansi_ some of the ANSI C library routines.

o src/lib/curses_ a screen handling package.

o src/lib/editline_ a line editing package.

o src/lib/fphook_ for printing floating-point numbers.

o src/lib/ip_ network access routines.

o src/lib/liby_ yacc library routines.

o src/lib/math_ mathematical library routines.

o src/lib/other_ other system library routines.

o src/lib/posix _ all system calls.

o src/lib/stdio_ the C standard I/O library.

o src/lib/sunsyscall_ all system calls (these just call the src/lib/posix

versions).

o src/lib/syslib_ used by Minix operating system, and a few commands

in src/commands.

o src/lib/sun4 _ C run time routines.

·  src/tools

This contains the files needed to combine the src/kernel/kernel,

src/mm/mm, src/fs/fs, src/inet/inet, and src/tools/init files, and the

compiled libraries in lib, into the single src/tools/image file. You won't

normally edit any code in this directory, but this is the only place you can

recompile all of your Minix operating system (the src/tools/image file).

Please refer to the diagrammatic representation in the next page.