Hint for Linux Programmers

1. As promise, I am giving you a list of file that may need to be
modified. They are:

sched.c

sched.h

sys.c

fork.c

I do not include the files that were mentioned in the Appendix A.

2. Sample grub.conf

# This one is from my very own machine.
# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this
# file
# NOTICE:  You have a /boot partition.  This means that
#          all kernel and initrd paths are relative to /boot/, eg.
#          root (hd0,0)
#          kernel /vmlinuz-version ro root=/dev/hda5
#          initrd /initrd-version.img
#boot=/dev/hda
#default to XP
default=2 
timeout=10
splashimage=(hd0,0)/grub/splash.xpm.gz
# Default Kernel Entry
title Red Hat Linux (2.4.20-8)
	root (hd0,0)
	kernel /vmlinuz-2.4.20-8 ro root=LABEL=/ hdc=ide-scsi
	initrd /initrd-2.4.20-8.img
# Modified Kernel Entry
title Modified Red Hat Linux (2.4.20-8)
	root (hd0,0)
	kernel /cse351Image ro root=/dev/hda5
# Windows XP Entry
title windows XP
	rootnoverify (hd0,1)
	chainloader +1

To find out where is your "/" directory, just type df at command
prompt. You should see something like this:

Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/hda5             12175756   9657364   1899892  84% /
/dev/hda1                77750     10778     62958  15% /boot
/dev/hdb2             19409800   4030228  14393584  22% /home
none                    515488         0    515488   0% /dev/shm

Obviously, my "/" is /dev/hda5 and thus, I put it in the kernel line of
my grub.conf. 

3. For redhat 8 and up you may need to modified

/usr/src/linux/kernel/ksyms.c and export sys_call_table.

EXPORT_SYMBOL(sys_call_table);