Ok, so I've finally gotten around to playing with preinit and various posts, and decided to hone my shell scripting in the process. Attached is a script that will format /dev/hda2 and set up a mount entry (/programs0) for it. It will also create 'rwp' and 'rop' entries for manipulating it in a similar way to rw and ro. If you have a second drive then it will also create /programs1 on /dev/hdc1. The script also goes on and populates /etc/preinit.d with a few shell scripts for starting apps, although I'm sure there's a few more that will need to be added.

Note: You will still need to install the preinit binary and the apps themselves. I have defaulted telnetd to live in /bin, but everything else under /programs0, but you can modify these to suit your needs.

#!/bin/sh





#This script sets stuff up for preinit and 3rd party apps.


#It formats and  sets up /dev/hda2 (and /dev/hdc2 if present) for use, and is


#reasonably intelligent - if it can mount a partition then it wont reformat it 


#It also provides a couple of utilities for mounting the partitions.


#It then creates /etc/preinit.d and populates it with some useful start scripts - again, if /etc/preinit.d


#already exists, then it will skip this stage.





#CMA Warning: Do not leave this script with executable permissions on your home linux boxes. chmod it to 600.





# copyright: Ian Danby. 2002.


# GPL Version 2 or later. See www.fsf.org for legalese.





#Put root into rw mode. 


rw || exit





#Create mountpoints


mkdir /programs0


mkdir /programs1


chmod 755 /programs0


chmod 755 /programs1





#Format partitions. We'll try mounting the partitions first.


#If we can grep them in /proc/mounts then we alread have a valid fs and should skip.





mount -n -r -t ext2 /dev/hda2 /programs0


[ -e /proc/ide/hdb ] && mount -n -r -t ext2 /dev/hdc2 /programs1





grep /dev/hda2 /proc/mounts > /tmpfile


if [ -s /tmpfile ]; then


	echo "/dev/hda2 already formatted. Skipping."


else 


	mke2fs /dev/hda2


fi


rm /tmpfile





if [ -e /proc/ide/hdb ]; then


	grep /dev/hdc2 /proc/mounts > /tmpfile


	if [ -s /tmpfile ]; then


		echo "/dev/hdc2 already formatted. Skipping."


	else


		mke2fs /dev/hdc2


	fi


	rm /tmpfile


fi





#Modify /etc/fstab





grep /dev/hda2 /etc/fstab > /tmpfile


if [ -s /tmpfile ]; then


	echo "/etc/fstab already contains an entry for /dev/hda2. Skipping."


else


	echo "/dev/hda2       /programs0      ext2          defaults,ro    1      1" >> /etc/fstab


	echo "Entry for /dev/hda2 appended to /etc/fstab"


fi


rm /tmpfile





if [ -e /proc/ide/hdb ]; then


	grep /dev/hdc2 /etc/fstab > /tmpfile


	if [ -s /tmpfile ]; then


		echo "/etc/fstab already contains an entry for /dev/hdc2. Skipping."


	else


		echo "/dev/hdc2       /programs1      ext2          defaults,ro    1      1" >> /etc/fstab


		echo "Entry for /dev/hdc2 appended to /etc/fstab"


	fi


	rm /tmpfile


fi








#Create a couple of useful 'binaries', /bin/rwp and /bin/rop. Guess what they do.


cat <<-END > /bin/rwp


	#!/bin/sh


	mount -n -o remount,rw /programs0


	[ -e /proc/ide/hdb ] && mount -n -o remount,rw /programs1


END


chmod 755 /bin/rwp





cat <<-END > /bin/rop


	#!/bin/sh


	mount -n -o remount,ro /programs0


	[ -e /proc/ide/hdb ] && mount -n -o remount,ro /programs1


END


chmod 755 /bin/rop











#Create /etc/preinit.d and populate it. Skip and exit if it already exists.


if [ -e /etc/preinit.d ]; then


	echo "/etc/preinit.d already exists!. Skipping."


	ro


	exit


else 


	mkdir /etc/preinit.d


fi





#It shouldn't matter if we try to preinit stuff that doesn't exist. The shell deals with missing binaries 


####





#telnetd.  Best put in the /bin partition so that we can access it immediately. Lets do this first just in case.


#Note that the 'N' prefix tells preinit to do this before config.ini is read (ie drives aren't mounted yet)


cat <<-END > /etc/preinit.d/N10telnetd


	#!/bin/bash


	/bin/telnetd


END


chmod 755 /etc/preinit.d/N10telnetd





#mount the new drives. Also done before config.ini is read.


cat  <<-END > /etc/preinit.d/N20mount


	#!/bin/bash


	mount -n /programs0


	[ /proc/ide/hdb ] && mount -n /programs1


END


chmod 755 /etc/preinit.d/N20mount








#Everything else that follows should probably live in the new parition(s), so need the 'M' prefix.


#For now, let's stuff everything in /programs0...Edit to suit 


#Let me know what I've missed.


####





#empacman. The reason I finally got around to doing this...Great stuff.


cat <<-END > /etc/preinit.d/M10empacman


	#!/bin/bash


	/programs0/empacman


END


chmod 755 /etc/preinit.d/M10empacman








#emptris


cat <<-END > /etc/preinit.d/M20emptris


	#!/bin/bash


	/programs0/emptris


END


chmod 755 /etc/preinit.d/M20emptris





#emptriv. Note that this is a subdir.


cat <<-END > /etc/preinit.d/M30emptriv


	#!/bin/bash


	/programs0/emptriv/emptriv


END


chmod 755 /etc/preinit.d/M30emptriv





#empan. AFAIK, there is is command line only at the moment, hence the commenting out.


#Maybe some nice soul will hijackify it, and give a means of menu-selecting a file from a named directory 


#cat <<-END > /etc/preinit.d/M40empan


#	#!/bin/bash


#	/programs0/empan


#END


#chmod 755 /etc/preinit.d/M40empan








#Lets be paranoid before exiting.


ro


rop





exit