diff options
Diffstat (limited to 'debian/qemu-debootstrap')
| -rw-r--r-- | debian/qemu-debootstrap | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/debian/qemu-debootstrap b/debian/qemu-debootstrap new file mode 100644 index 0000000..674d71a --- /dev/null +++ b/debian/qemu-debootstrap @@ -0,0 +1,168 @@ +#!/bin/sh +# qemu-debootstrap - setup qemu syscall emulation in a debootstrap chroot +# Copyright (C) 2010 Loïc Minier <lool@dooz.org> +# +# Permission is hereby granted, free of charge, to any person obtaining a +# copy of this software and associated documentation files (the "Software"), +# to deal in the Software without restriction, including without limitation +# the rights to use, copy, modify, merge, publish, distribute, sublicense, +# and/or sell copies of the Software, and to permit persons to whom the +# Software is furnished to do so, subject to the following conditions: +# +# The above copyright notice and this permission notice shall be included in +# all copies or substantial portions of the Software. +# +# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL +# SOFTWARE IN THE PUBLIC INTEREST, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR +# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, +# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER +# DEALINGS IN THE SOFTWARE. +# +# Except as contained in this notice, the name of the author shall not be used +# in advertising or otherwise to promote the sale, use or other dealings in +# this Software without prior written authorization from the author. +# +# requires: debootstrap + +set -e + +log() { + local format="$1" + shift + printf -- "$format\n" "$@" >&2 +} + +warn() { + local format="$1" + shift + log "W: $format" "$@" +} + +die() { + local format="$1" + shift + log "E: $format" "$@" + exit 1 +} + +run() { + log "I: Running command: %s" "$*" + "$@" +} + +escape() { + echo "$*" | sed "s/'/'\"'\"'/g; s/.*/'&'/" +} +unescape () { + eval "echo" "$*" +} + +if ! which debootstrap 2>&1 >/dev/null; then + die "debootstrap not found; install the debootstrap package" +fi + +system_arch="$(dpkg --print-architecture)" +deb_arch="$system_arch" + +# backward-compatibility with "build-arm-chroot" script which defaulted to +# armel +if [ "`basename "$0"`" = "build-arm-chroot" ]; then + deb_arch="armel" + log "Setting Debian architecture to armel" + log "W:" "$0 is deprecated, please use qemu-debootstrap" +fi + +opts="" +args="" +suite="" +target="" +mirror="" +script="" +while [ $# -gt 0 ]; do + case "$1" in + --help) + die "I'm just a debootstrap wrapper; please see debootstrap --help" + ;; + --arch|--arch=?*) + if [ "$1" = "--arch" -a $# -ge 2 -a -n "$2" ]; then + deb_arch="$2" + shift 2 + elif [ "$1" != "${1#--arch=}" ]; then + deb_arch="${1#--arch=}" + shift + else + die "option %s requires an argument" "$1" + fi + ;; + --*) + opts="$opts $(escape "$1")" + shift + ;; + *) + if [ -z "$suite" ]; then stage="suite"; + elif [ -z "$target" ]; then stage="target"; + elif [ -z "$mirror" ]; then stage="mirror"; + elif [ -z "$script" ]; then stage="script"; + fi + if [ -n "$1" ]; then + eval $stage=\"\$1\" + args="$args $(escape "$1")" + else + die "option %s may not be empty" "$stage" + fi + shift + ;; + esac +done + +needs_qemu="yes" +if [ "$deb_arch" = "$system_arch" ]; then + warn "Target architecture is the same as host architecture; disabling QEMU support" + needs_qemu="no" +fi +# bi-arch; TODO test whether the running kernel is actually bi-arch capable +case "$system_arch-$deb_arch" in + amd64-i386|amd64-lpia|arm-armel|arm-armhf|armel-arm|armhf-arm|i386-amd64|i386-lpia|lpia-i386|powerpc-ppc64|ppc64-powerpc|sparc-sparc64|sparc64-sparc) + warn "Host architecture might allow running target architecture; disabling QEMU support" + needs_qemu="no" + ;; +esac + +if [ "$needs_qemu" = no ]; then + eval run debootstrap --arch "$deb_arch" $opts $args + exit 0 +fi + +qemu_arch="" +case "$deb_arch" in + alpha|arm|armeb|i386|m68k|mips|mipsel|ppc64|sh4|sh4eb|sparc|sparc64) + qemu_arch="$deb_arch" + ;; + amd64) + qemu_arch="x86_64" + ;; + armel|armhf) + qemu_arch="arm" + ;; + lpia) + qemu_arch="i386" + ;; + powerpc) + qemu_arch="ppc" + ;; + *) + die "Sorry, I don't know how to support arch %s" "$arch" + ;; +esac + +if ! which "qemu-$qemu_arch-static" >/dev/null 2>&1; then + die "Sorry, couldn't find binary %s" "qemu-$qemu_arch-static" +fi + +eval run debootstrap --arch "$deb_arch" --foreign $opts $args +mkdir -p "$target/usr/bin" +cp $(which "qemu-$qemu_arch-static") "$target/usr/bin" +run chroot "$target" /debootstrap/debootstrap --second-stage + |