#!/bin/bash
 #################################################
 #       Title:  mk-prepare-system               #
 #        Date:  2014-11-26                      #
 #     Version:  1.0                             #
 #      Author:  mbassiouny@vmware.com           #
 #     Options:                                  #
 #################################################
 #	Overview
 #		Preparing the system to install photon
 #	End
 #
 set -o errexit		# exit if error...insurance ;
 set -o nounset		# exit if variable not initalized
 set +h			# disable hashall
 source config.inc
 source function.inc
 PRGNAME=${0##*/}	# script name minus the path
 
 LOGFILE=/var/log/"${PRGNAME}-${LOGFILE}"	#	set log file name
 #LOGFILE=/dev/null		#	uncomment to disable log file
 
 [ ${EUID} -eq 0 ] 	|| fail "${PRGNAME}: Need to be root user: FAILURE"
 [ -z ${BUILDROOT} ]	&& fail "${PRGNAME}: Build root not set: FAILURE"
 
 if mountpoint ${BUILDROOT}/run	>/dev/null 2>&1; then umount ${BUILDROOT}/run; fi
 if mountpoint ${BUILDROOT}/sys	>/dev/null 2>&1; then umount ${BUILDROOT}/sys; fi
 if mountpoint ${BUILDROOT}/proc	>/dev/null 2>&1; then umount ${BUILDROOT}/proc; fi
 if mountpoint ${BUILDROOT}/dev/pts	>/dev/null 2>&1; then umount ${BUILDROOT}/dev/pts; fi
 if mountpoint ${BUILDROOT}/dev	>/dev/null 2>&1; then umount ${BUILDROOT}/dev; fi
 [ ${EUID} -eq 0 ]	|| fail "${PRGNAME}: Need to be root user: FAILURE"
 

 cd ${BUILDROOT} || fail "${PRGNAME}: Change directory: ${BUILDROOT}: FAILURE"

 #
 #	Setup the filesystem for chapter 06
 #

 if [[	$# -gt 0 ]] && [[ $1 == 'install' ]]; then
 	mkdir -p ${BUILDROOT}/var/lib/rpm

 	mkdir -p ${BUILDROOT}/cache/tdnf
 	#Setup the disk
 	dd if=/dev/zero of=${BUILDROOT}/cache/swapfile bs=1M count=64
     mkswap -v1 ${BUILDROOT}/cache/swapfile
     swapon ${BUILDROOT}/cache/swapfile

 	rpm   --root ${BUILDROOT} --initdb

     tdnf install filesystem --installroot ${BUILDROOT} --nogpgcheck --assumeyes

 else
 	RPMPKG="$(find RPMS -name 'filesystem-[0-9]*.rpm' -print)"
 	[ -z ${RPMPKG} ] && fail "	Filesystem rpm package missing: Can not continue"
 	run_command "	Installing filesystem" "rpm -Uvh --nodeps --root ${BUILDROOT} --dbpath /var/lib/rpm ${RPMPKG}" "${LOGFILE}"
 fi
  

 # 	Ommited in the filesystem.spec file - not needed for booting
 [ -e ${BUILDROOT}/dev/console ]	|| mknod -m 600 ${BUILDROOT}/dev/console c 5 1

 [ -e ${BUILDROOT}/dev/null ]    || mknod -m 666 ${BUILDROOT}/dev/null c 1 3
 [ -e ${BUILDROOT}/dev/random ]  || mknod -m 444 ${BUILDROOT}/dev/random c 1 8
 [ -e ${BUILDROOT}/dev/urandom ] || mknod -m 444 ${BUILDROOT}/dev/urandom c 1 9

 
 chown -R 0:0 ${BUILDROOT}/*	|| fail "${PRGNAME}: Changing ownership: ${BUILDROOT}: FAILURE"
 
 #
 #	Mount kernel filesystem
 #
 if ! mountpoint ${BUILDROOT}/dev	>/dev/null 2>&1; then mount --bind /dev ${BUILDROOT}/dev; fi
 if ! mountpoint ${BUILDROOT}/dev/pts	>/dev/null 2>&1; then mount -t devpts devpts ${BUILDROOT}/dev/pts -o gid=5,mode=620; fi
 if ! mountpoint ${BUILDROOT}/proc	>/dev/null 2>&1; then mount -t proc proc ${BUILDROOT}/proc; fi
 if ! mountpoint ${BUILDROOT}/sys 	>/dev/null 2>&1; then mount -t sysfs sysfs ${BUILDROOT}/sys; fi
 if ! mountpoint ${BUILDROOT}/run	>/dev/null 2>&1; then mount -t tmpfs tmpfs ${BUILDROOT}/run; fi
 if [ -h ${BUILDROOT}/dev/shm ];			 then mkdir -pv ${BUILDROOT}/$(readlink ${BUILDROOT}/dev/shm); fi
 exit 0