Difference between revisions of "Archbootstrap"

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(First version of archbootstrap (does not work ATM))
 
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{{out of date}}
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[[Category:Boot process]]
<pre>#!/bin/bash
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[http://tokland.googlecode.com/svn/trunk/archlinux/arch-bootstrap.sh arch-bootstrap.sh] creates a base Arch Linux system where you can chroot to. Report bugs [http://code.google.com/p/tokland/issues/list here]. Some examples:
#########################################################################
 
# archbootstrap                                                        #
 
#                                                                      #
 
# archbootstrap is to archlinux what debootstrap is to Debian.         #
 
#                                                                      #
 
#                                                                      #
 
# archbootstrap is public domain though i wouldn't mind getting credit. #
 
#                                                                      #
 
# by David Leinhäuser (archlinux@calavera.de)                          #
 
# (minor tweak by lucke)                                                #
 
#########################################################################
 
  
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* Using default architecture (i686) and repository (http://mirrors.kernel.org/archlinux):
  
####################
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{{bc|
# Default Settings #
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$ bash arch-bootstrap.sh myarch
####################
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}}
MYVERSION="0.3"                              # Version number of this script.
 
GETCMD="${GETCMD:-wget --passive-ftp -c -q}" # What we use to download files.
 
PREINSTALL="${PREINSTALL:-glibc iputils}"    # Packages to install before using
 
                                            # pacman to fetch the rest.
 
IGNORE="${IGNORE:-}"                        # Packages not to be installed.
 
TARGET="${1:---help}"                        # Where to bootstrap to
 
SERVER="${2:-ftp://ftp.archlinux.org}"      # Where to fetch all the files.
 
INTERACTIVE="${INTERACTIVE:-1}"              # Interactive mode or batch mode
 
  
REPOS="current"                              # Which repository to use.
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* Bootstrap a ''x86_64'' system using a specific repository:
PKG_PACMAN="setup/pacman.pkg.tar.gz"        # Where to find pacman.
 
PKGLIST="setup/packages.txt"                # Where to find the packages list.
 
PKG_PREFIX="base"                            # Install pkgs with this prefix.
 
  
####################
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{{bc|
# Helper Functions #
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$ bash arch-bootstrap.sh -a x86_64 -r "ftp://ftp.archlinux.org" myarch
####################
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}}
PREV_DIR="$(pwd)" # remember current directory so we can chdir back later.
 
 
 
# Print an error message to stderr and quit.
 
function error() {
 
echo "Error: $*" >&2
 
cd "${PREV_DIR}"
 
exit 1;
 
}
 
 
 
# Simply exit the script.
 
function quit() {
 
cd "${PREV_DIR}"
 
exit 0;
 
}
 
 
 
# Wrapper around cd for lazy people like me.
 
function chngdir() {
 
cd "$@" || error "chdir failed."
 
}
 
 
 
#Wrapper around mkdir for lazy people like me.
 
function makedir() {
 
mkdir -p "$@" || error "mkdir failed."
 
}
 
 
 
#Fetch given URLs into current dir.
 
function fetch() {
 
while [ -n "${1}" ]; do
 
if [ -z "${1##file://*}" ]; then
 
F="${1#file://}"
 
echo "Copying ${F}."
 
cp "${1#file://}" . || error "Error copying ${F}."
 
else
 
echo "Fetching ${1}."
 
${GETCMD} "${1}" || error "Error fetching ${1}."
 
fi
 
shift
 
done
 
}
 
 
 
#Read the package list
 
PACKAGES=()
 
function read_pkglist() {
 
while read -s; do
 
PACKAGES=("${PACKAGES[@]}" "${REPLY}")
 
done <"${BOOTSTRAP}/${PKGLIST##*/}"
 
}
 
 
 
#Return 1 if the first argument does not equal any of the other arguments.
 
function match() {
 
PATTERN="${1}"
 
shift
 
while [ -n "${1}" ]; do
 
[ "${PATTERN}" == "${1}" ] && return 0
 
shift
 
done
 
return 1
 
}
 
 
 
######################
 
# Sanity checks etc. #
 
######################
 
case "${TARGET}" in
 
--help|-h)
 
cat <<-EOT
 
Usage: $0 DIR [SERVER]
 
Bootstrap Archlinux into DIR (from SERVER).
 
EOT
 
quit;
 
;;
 
--version)
 
echo "archbootstrap ${MYVERSION}";
 
quit;
 
;;
 
esac
 
 
 
[ "$UID" == "0" ] || error "You need to be root."
 
 
 
# This is an easy way to get an useful absolute path.
 
chngdir "${TARGET}"
 
TARGET="$(pwd)"
 
 
 
#[ -n "$(ls)" ] && error "${1} is not empty."
 
 
 
# Create working directory.
 
TEMP="${TARGET}/tmp"
 
makedir -m 1777 -p "${TEMP}"
 
BOOTSTRAP="${TEMP}/bootstrap"
 
PKG_CACHE="${TARGET}/var/cache/pacman/pkg"
 
makedir -m 0755 -p "${BOOTSTRAP}" "${PKG_CACHE}"
 
chngdir "${BOOTSTRAP}"
 
 
 
########################################
 
# Stuff we need for our staged install #
 
########################################
 
STAGEFILE="${BOOTSTRAP}/stage"
 
function set_stage() {
 
echo "${1}" >"${STAGEFILE}"
 
STAGE="${1}"
 
}
 
 
 
if [ -e "${STAGEFILE}" ]; then
 
STAGE="$(< "${STAGEFILE}")"
 
else
 
STAGE="start"
 
fi
 
 
 
##################
 
# pacman wrapper #
 
##################
 
PACMAN=("$(which chroot)" "${TARGET}" "${BOOTSTRAP#${TARGET}}/usr/bin/pacman.static")
 
function add_pkgs() {
 
PKGS=()
 
while [ -n "${1}" ]; do
 
PKGS=("${PKGS[@]}" "${1#${TARGET}}")
 
shift
 
done
 
"${PACMAN[@]}" -A "${PKGS[@]}" || error "Could not add a package."
 
}
 
 
 
function sync_pkgs() {
 
if [ "${INTERACTIVE}" == "1" ]; then
 
"${PACMAN[@]}" -Syf "${@}" || error "Could not sync a package."
 
else
 
echo y | "${PACMAN[@]}" -Syf "${@}" || \
 
error "Could not sync a package."
 
fi
 
}
 
 
 
#############
 
# Main loop #
 
#############
 
PREV_STAGE=""
 
FURL="${SERVER}/${REPOS}/os/i686"
 
 
 
echo "archbootstrap $MYVERSION"
 
 
 
until [ "${PREV_STAGE}" == "${STAGE}" ]; do
 
PREV_STAGE="${STAGE}"
 
case "${STAGE}" in
 
start)
 
chngdir "${BOOTSTRAP}"
 
fetch "${FURL}/${PKG_PACMAN}" "${FURL}/${PKGLIST}"
 
tar xfz ${PKG_PACMAN##*/} || \
 
error "Could not untar ${BOOTSTRAP}${PKG_PACMAN##*/}."
 
makedir "${TARGET}/etc"
 
{ echo "[${REPOS}]";
 
  echo "Server = ${FURL}"; } >"${TARGET}/etc/pacman.conf" || \
 
error "Could not create ${TARGET}/etc/pacman.conf."
 
cp -f "/etc/resolv.conf" "${TARGET}/etc/resolv.conf" || \
 
error "Could not copy /etc/resolv.conf."
 
set_stage "pre_packages"
 
;;
 
pre_packages)
 
chngdir "${PKG_CACHE}"
 
[ "${#PACKAGES[@]}" == "0" ] && read_pkglist;
 
for I in "${PACKAGES[@]}"; do
 
PKGPREFIX="${I%%/*}"
 
PKGFILE="${I##*/}"
 
PKGNAME="${PKGFILE%-*-*.pkg.tar.gz}"
 
if match "${PKGNAME}" ${PREINSTALL}; then
 
fetch "${FURL}/${PKGFILE}"
 
add_pkgs "${PKG_CACHE}/${PKGFILE}"
 
fi
 
done
 
set_stage "packages"
 
;;
 
packages)
 
chngdir "${BOOTSTRAP}"
 
PKGS=()
 
[ "${#PACKAGES[@]}" == "0" ] && read_pkglist;
 
for I in "${PACKAGES[@]}"; do
 
PKGPREFIX="${I%%/*}"
 
PKGFILE="${I##*/}"
 
PKGNAME="${PKGFILE%-*-*.pkg.tar.gz}"
 
[ "${PKGPREFIX}" == "${PKG_PREFIX}" ] || continue
 
match "${PKGNAME}" ${IGNORE} ${PREINSTALL} && continue
 
PKGS=("${PKGS[@]}" "${PKGNAME}")
 
done
 
sync_pkgs "${PKGS[@]}"
 
set_stage "cleanup"
 
;;
 
cleanup)
 
echo "Cleaning up..."
 
chngdir "${TARGET}"
 
rm -Rf "${BOOTSTRAP}" || error "Could not remove ${BOOTSTRAP}."
 
quit
 
;;
 
esac
 
done</pre>
 

Revision as of 13:02, 13 June 2012

arch-bootstrap.sh creates a base Arch Linux system where you can chroot to. Report bugs here. Some examples:

$ bash arch-bootstrap.sh myarch
  • Bootstrap a x86_64 system using a specific repository:
$ bash arch-bootstrap.sh -a x86_64 -r "ftp://ftp.archlinux.org" myarch