Automating FreeBSD’s crunchgen(1)
Automating FreeBSD’s crunchgen(1)
Hey, Joe…this one’s for you…thanks for reading!
One of my main tasks in my role at work is to maintain FreeBSD provisioning bits. I have found myself generating boot_crunch files with various binaries and what not to extend the capabilities of the provisioning aspect of FreeBSD. So much so that I whipped up a quick script to automate the task for me.
Please bear in mind, it is a quick script which makes a number of assumptions. It’s not perfect and can certainly use some tweaking and the like, but this initial version gets one started.
I keep my boot_crunch.conf in a subversion repo, thus the calls to svn.
#! /bin/sh
#
# bldcrunch.sh: Generate a FreeBSD boot_crunch file. This script does not
# function on hosts that are not running FreeBSD.
#
# Author: Rick
# Date: 25 July 2012
# Modif:
#####
## Variables
#####
SELF="${0##*/}";
NULL="/dev/null";
TMP="/tmp";
PATH="${PATH}";
SVNREPO="http://svn.domain.com/freebsd-repo";
REPODIR="/freebsd-repo";
BOOTCRUNCHDIR="boot_crunch";
BOOTCRUNCHCONF="boot_crunch.conf";
BOOTCRUNCHMK="boot_crunch.mk";
SVNBIN="/usr/local/bin/svn";
CRUNCHGEN="/usr/bin/crunchgen";
MAKE="/usr/bin/make";
#####
## Functions
#####
ERROR_EXIT() {
echo "${1}" 1>&2;
[ -d ${TMP}/${BOOTCRUNCHDIR} ] && rm ${TMP}/${BOOTCRUNCHDIR};
exit 1;
}
#####
## Main
#####
# Verify we're on a FreeBSD host
HOSTOS=`uname -s`;
[ ${HOSTOS} != "FreeBSD" ] && ERROR_EXIT "Build host is not FreeBSD! Exiting!";
# Do all of our binaries exist?
for ea in ${SVNBIN} ${CRUNCHGEN} ${MAKE}; do
if [ -e ${ea} ]; then
continue;
else
ERROR_EXIT "${ea} is required! Exiting!";
fi
done
# Update SVN repo to make sure we're using the latest boot_crunch.conf
if [ -d ${REPODIR}/${BOOTCRUNCHDIR} ]; then
cd ${REPODIR}/${BOOTCRUNCHDIR} && ${SVNBIN} update;
else
${SVN} co ${SVNREPO} ${REPODIR};
fi
# Setup our build environment
[ -d ${TMP}/${BOOTCRUNCHDIR} ] && rm -rf ${TMP}/${BOOTCRUNCHDIR};
mkdir ${TMP}/${BOOTCRUNCHDIR} && cd ${TMP}/${BOOTCRUNCHDIR};
# Build the boot_crunch
${CRUNCHGEN} -o ${REPODIR}/${BOOTCRUNCHDIR}/${BOOTCRUNCHCONF};
[ $? -eq 0 ] && ${MAKE} -f ${BOOTCRUNCHMK};
[ $? -ne 0 ] && ERROR_EXIT "Error generating boot_crunch! Exiting!";
#####
## EOF
#####
BTW, I edited this because I found out about wordpress’s sourcecode tag…awesome!
Categories: FreeBSD
hostileadmin 
this appears to be brkoen now the repo URL returns a 404, and there does not appear to be information on the main Pear website about how to access the svn repository if it has been changed or moved.
The repo URL is a dummy URL. The real repo URL is an internal URL not publicly accessible to the internet. What were you looking for? Perhaps I may be able to give you an example.