quarks/scripts/build.sh

337 lines
8.1 KiB
Bash
Raw Normal View History

2011-10-28 21:00:47 +00:00
#!/bin/sh
# - builds a generic image from a stage3 tarball and portage snapshot
#
# based on work from JD Harrington https://github.com/psi/gentoo-aws
# and Matsuu Takuto https://gist.github.com/870789
#===============================================================================
GENTOO_MIRROR="http://distfiles.gentoo.org"
2011-10-31 22:50:15 +00:00
LOCAL_CACHE=/var/tmp
CHROOT=/mnt/gentoo
2011-10-28 21:00:47 +00:00
2011-11-21 23:54:45 +00:00
set -o nounset
2011-10-28 21:00:47 +00:00
die() {
2013-04-27 18:07:42 +00:00
echo $@
exit 1
2011-10-28 21:00:47 +00:00
}
2011-11-01 00:15:03 +00:00
verify_digest() {
local FILE_NAME=$1
local TYPE=$2
local DIGEST=$3
local PURGE=$4
case $TYPE in
sha512)
FILE_DIGEST=$(sha512sum ${FILE_NAME} | awk '{print $1}')
;;
md5)
FILE_DIGEST=$(md5sum ${FILE_NAME} | awk '{print $1}')
;;
*)
echo "Unknown DIGEST"
return 1
;;
esac
if [ "${FILE_DIGEST}" = "${DIGEST}" ]; then
echo "${TYPE} checksum for ${FILE_NAME} verified."
return 0
else
echo "Invalid checksum for ${FILE_NAME}!"
[ "x${PURGE}" != "x" ] && { echo "Removing cached copy." ; rm -f ${FILE_NAME}; }
return 1
fi
}
2011-10-31 22:50:15 +00:00
fetch_file() {
2013-04-27 18:07:42 +00:00
local URL=$1
local DIGEST_URL=$2
2013-04-27 18:07:42 +00:00
local FILE_NAME=$(basename ${URL})
2013-04-27 18:07:42 +00:00
local DIGEST_TYPE
2013-04-27 18:07:42 +00:00
# Check cache
if [ ! -d ${LOCAL_CACHE} ] || [ ! -w ${LOCAL_CACHE} ]; then
echo "Cannot write to cache ${LOCAL_CACHE}"
return 1
2013-04-27 18:07:42 +00:00
fi
# If DIGEST requested get it
if [ ! -z ${DIGEST_URL} ]; then
DIGEST=$(curl -s -S ${DIGEST_URL} | grep -A1 -e "^# SHA512 HASH" | grep -o -E -e "^[0-9a-f]{128} *${FILE_NAME}$" | awk '{print $1}')
if [ -z ${DIGEST} ]; then
# Let's try md5sum before giving up
DIGEST=$(curl -s -S ${DIGEST_URL} | grep -o -E -e "^[0-9a-f]{32} *${FILE_NAME}$" | awk '{print $1}')
if [ -z ${DIGEST} ]; then
echo "Unable to get checksum for ${FILE_NAME}, abort"
return 2
fi
DIGEST_TYPE="md5"
2013-04-27 18:07:42 +00:00
else
DIGEST_TYPE="sha512"
2013-04-27 18:07:42 +00:00
fi
fi
# Do we have local copy
if [ -f ${LOCAL_CACHE}/${FILE_NAME} ]; then
verify_digest ${LOCAL_CACHE}/${FILE_NAME} $DIGEST_TYPE ${DIGEST} 1
if [ $? -eq 0 ]; then
2013-04-27 18:07:42 +00:00
cp ${LOCAL_CACHE}/${FILE_NAME} .
echo "Using cached ${LOCAL_CACHE}/${FILE_NAME}"
return 0
2013-04-27 18:07:42 +00:00
fi
fi
# We we are here either we didnt have a copy or the cached file was invalid
wget -q -O ${LOCAL_CACHE}/${FILE_NAME} ${URL}
if [ $? -eq 0 ]; then
echo "Downloaded ${URL} to ${LOCAL_CACHE}/${FILE_NAME}"
2013-04-27 18:07:42 +00:00
verify_digest ${LOCAL_CACHE}/${FILE_NAME} $DIGEST_TYPE ${DIGEST} 1
if [ $? -ne 0 ]; then
echo "Could not get a verified version of ${FILE_NAME}"
return 3
fi
cp ${LOCAL_CACHE}/${FILE_NAME} .
else
echo "Cannot download ${URL}!"
return 4
fi
2011-10-31 22:50:15 +00:00
}
2011-11-01 00:15:03 +00:00
# bootstrap, download stage3 and portage snapshot
2011-10-28 21:00:47 +00:00
bootstrap() {
2013-04-27 18:07:42 +00:00
[ -d ${CHROOT} ] || die "${CHROOT} does not exists"
[ -w ${CHROOT} ] || die "${CHROOT} isn't writable"
2013-04-27 18:07:42 +00:00
cd ${CHROOT}
# first install stage 3
2013-04-27 18:07:42 +00:00
if [ -d "usr" ] ; then
echo "There seems to be already files in ${CHROOT} !"
echo "Press <Ctrl+c> to abort, or <Return> to proceed without extracting stage3 ..."
read -r REPLY
else
STAGE_TARBALL=${GENTOO_MIRROR}/releases/${ARCH}/autobuilds/$(curl -s ${LATEST_STAGE_FILE} | grep -v "^#" | head -n 1)
fetch_file "${STAGE_TARBALL}" "${STAGE_TARBALL}.DIGESTS" || die "Cannot get ${STAGE_TARBALL}"
2011-10-28 21:00:47 +00:00
echo "Extracting stage3 to ${CHROOT} ..."
tar jxpf $(basename ${STAGE_TARBALL}) || die "Extracting stage3 failed"
2011-10-28 21:00:47 +00:00
rm -f $(basename ${STAGE_TARBALL})
fi
2013-04-27 18:07:42 +00:00
# Portage snapshot
PORTAGE_SNAPSHOT="${GENTOO_MIRROR}/releases/snapshots/current/portage-latest.tar.bz2"
_PORTAGE_MOUNTED=0
if [ "x${BIND_PORTAGE}" != "x" -a -d ${BIND_PORTAGE} ] ; then
mkdir -p ${CHROOT}/usr/portage
mount --bind ${BIND_PORTAGE} ${CHROOT}/usr/portage || die "Error mounting ${BIND_PORTAGE}"
# Remember we mounted portage
_PORTAGE_MOUNTED=1
2013-04-27 18:07:42 +00:00
else
# install latest portage snapshot
if [ -d "usr/portage" ] ; then
echo "There seems to be already portage files!"
echo "Press <Ctrl+c> to abort, or <Return> to proceed without extracting portage ..."
read -r REPLY
else
2013-04-27 18:07:42 +00:00
fetch_file "${PORTAGE_SNAPSHOT}" "${PORTAGE_SNAPSHOT}.md5sum"
echo "Extracting latest portage snapshot to ${CHROOT}/usr ..."
tar jxf $(basename ${PORTAGE_SNAPSHOT}) -C "${CHROOT}/usr" || die "Extracting portage snapshot failed"
2013-04-27 18:07:42 +00:00
rm -f portage-latest.tar.bz2
fi
fi
}
# setup_chroot CHROOT
setup_chroot() {
2013-04-27 18:07:42 +00:00
# mount pseudo filesystems
mount -t proc none ${CHROOT}/proc || die "Error mounting /proc"
mount --rbind /dev ${CHROOT}/dev || die "Error mounting /dev"
mount --rbind /sys ${CHROOT}/sys || die "Error mounting /sys"
}
2013-04-27 18:07:42 +00:00
# Actually prepare the install script running within chroot
# and run it
install_gentoo() {
2013-04-27 18:07:42 +00:00
if [ ${INTERACTIVE} = 1 ]; then
echo "Done. Entering chroot environment. All yours..."
chroot ${CHROOT} /bin/bash
2013-04-27 18:07:42 +00:00
else
# resolve.conf
echo "Copy resolv.conf from host"
cp -L /etc/resolv.conf ${CHROOT}/etc/resolv.conf || die "Can't copy resolv.conf"
# Install make.conf
if [ "x${MAKE_CONF}" != "x" ]; then
[ -r ${MAKE_CONF} ] || die "Cannot read ${MAKE_CONF}"
echo "Using custom make.conf"
cp ${MAKE_CONF} ${CHROOT}/etc/portage/
fi
# From here we create the install script and execute it within the chroot at the end
cat << 'EOF' > ${CHROOT}/tmp/install.sh
#!/bin/bash
set -x
source /etc/profile
export PS1="(chroot) $PS1"
EOF
# Sync portage if not mounted
if [ ${_PORTAGE_MOUNTED} = 0 ]; then
cat << 'EOF' >> ${CHROOT}/tmp/install.sh
echo "Syncing portage snapshot..."
emerge -p --sync --quiet
EOF
fi
# eselect profile
cat << EOF >> ${CHROOT}/tmp/install.sh
echo "Setting profile to ${ESELECT_PROFILE}"
eselect profile set ${ESELECT_PROFILE}
EOF
# Set Timezone
# Configure locales
# Compile own kernel later
# boot + kernel + lib/modules
# /etc/fstab
chmod 755 ${CHROOT}/tmp/install.sh
chroot ${CHROOT} /tmp/install.sh
2013-04-27 18:07:42 +00:00
echo "Done !"
echo "Press <Return> to tear down the chroot environment once you are done."
read -r REPLY
fi
2011-11-21 23:54:45 +00:00
}
# Clean up host
cleanup() {
umount ${CHROOT}/dev/pts ${CHROOT}/dev ${CHROOT}/sys ${CHROOT}/proc
2013-04-27 18:07:42 +00:00
if [ ${_PORTAGE_MOUNTED} != 0 ]; then
umount ${CHROOT}/usr/portage
else
rm -rf ${CHROOT}/usr/portage/distfiles/*
2013-04-27 18:07:42 +00:00
fi
# Clean up chroot
rm -rf ${CHROOT}/tmp/*
rm -rf ${CHROOT}/var/tmp/*
2011-11-21 23:54:45 +00:00
}
# print usage
2011-10-28 21:00:47 +00:00
usage() {
cat << EOF
Usage: $0 [options]
This script builds a full Gentoo chroot
2011-10-28 21:00:47 +00:00
OPTIONS:
-h Show this message
-a arch, either i686 or x86_64, defaults to uname -m
-p profile, [ hardened | hardened-no-multilib | default *]
2011-10-28 21:00:47 +00:00
-t The timezone to use, default to GMT
-r chroot location (default $CHROOT )
-c local cache (default $LOCAL_CACHE)
-b bind mount portage tree from, instead of downloading portage snapshot
-i interactive, enter chroot only, do NOT run install script
-m use custom make.conf
-d debug (set -x)
2011-10-28 21:00:47 +00:00
EOF
}
2011-11-21 23:54:45 +00:00
DEBUG=0
INTERACTIVE=0
MAKE_CONF=""
BIND_PORTAGE=""
while getopts ":a:p:t:r:c:m:b:dhi" OPTIONS; do
2013-04-27 18:07:42 +00:00
case $OPTIONS in
a ) ARCH=$OPTARG;;
p ) PROFILE=$OPTARG;;
t ) TIMEZONE=$OPTARG;;
d ) DEBUG=1;;
b ) BIND_PORTAGE=$OPTARG;;
r ) CHROOT=$OPTARG;;
2013-04-27 18:07:42 +00:00
c ) LOCAL_CACHE=$OPTARG;;
i ) INTERACTIVE=1;;
m ) MAKE_CONF=$OPTARG;;
? )
usage
exit
;;
esac
2011-10-28 21:00:47 +00:00
done
# Do some sanity checks first
if [ "$(id -u)" != "0" ]; then
die "Sorry, but we need root permissions to create DEVICE nodes etc.!"
fi
2011-10-28 21:00:47 +00:00
ARCH=${ARCH-"$(uname -m)"}
PROFILE=${PROFILE="default"}
2011-10-28 21:00:47 +00:00
TIMEZONE=${TIMEZONE-"GMT"}
if [ "${ARCH}" = "i686" ] ; then
# Why do they use x86 here ? :(
STAGE_PATH="${GENTOO_MIRROR}/releases/x86/autobuilds"
elif [ "${ARCH}" = "x86_64" ] ; then
ARCH="amd64"
STAGE_PATH="${GENTOO_MIRROR}/releases/${ARCH}/autobuilds"
elif [ "${ARCH}" = "amd64" ] ; then
STAGE_PATH="${GENTOO_MIRROR}/releases/${ARCH}/autobuilds"
else
die "Unknown architecture!"
fi
if [ "${PROFILE}" = "hardened" ] ; then
LATEST_STAGE_FILE="${STAGE_PATH}/latest-stage3-${ARCH}-hardened.txt"
ESELECT_PROFILE="hardened/linux/${ARCH}"
elif [ "${PROFILE}" = "hardened-no-multilib" ] ; then
LATEST_STAGE_FILE="${STAGE_PATH}/latest-stage3-${ARCH}-hardened+nomultilib.txt"
ESELECT_PROFILE="hardened/linux/${ARCH}/no-multilib"
elif [ "${PROFILE}" = "default" ] ; then
LATEST_STAGE_FILE="${STAGE_PATH}/latest-stage3-${ARCH}.txt"
ESELECT_PROFILE="default/linux/${ARCH}/13.0"
else
die "Unknown profile!"
fi
if [ ${DEBUG} -eq 1 ]; then
2013-04-27 18:07:42 +00:00
set -x
fi
bootstrap
2011-11-21 23:54:45 +00:00
# From here make sure we don't leave stuff around on the host
trap "cleanup" INT TERM EXIT
setup_chroot
2011-11-21 23:54:45 +00:00
install_gentoo