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isar-bootstrap.inc
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isar-bootstrap.inc
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# Minimal debian root file system
#
# This software is a part of ISAR.
# Copyright (c) Siemens AG, 2018
#
# SPDX-License-Identifier: MIT
LICENSE = "gpl-2.0"
LIC_FILES_CHKSUM = "file://${LAYERDIR_core}/licenses/COPYING.GPLv2;md5=751419260aa954499f7abaabaa882bbe"
FILESPATH_prepend := "${THISDIR}/files:"
SRC_URI = " \
file://isar-apt.conf \
file://isar-apt-fallback.conf \
file://locale \
file://chroot-setup.sh \
file://base-apt-sources"
PV = "1.0"
DEBOOTSTRAP ?= "qemu-debootstrap"
ROOTFSDIR = "${WORKDIR}/rootfs"
APTPREFS = "${WORKDIR}/apt-preferences"
APTSRCS = "${WORKDIR}/apt-sources"
APTSRCS_INIT = "${WORKDIR}/apt-sources-init"
BASEAPTSRCS = "${WORKDIR}/base-apt-sources"
DISTRO_BOOTSTRAP_KEYFILES = ""
THIRD_PARTY_APT_KEYFILES = ""
DEPLOY_ISAR_BOOTSTRAP ?= ""
DISTRO_BOOTSTRAP_BASE_PACKAGES = "locales"
DISTRO_BOOTSTRAP_BASE_PACKAGES_append_gnupg = ",gnupg2"
DISTRO_BOOTSTRAP_BASE_PACKAGES_append_https-support = ",apt-transport-https,ca-certificates"
DISTRO_APT_PREMIRRORS ?= "${@ "http://ftp\.(\S+\.)?debian.org file:///${REPO_BASE_DIR} \n" if bb.utils.to_boolean(d.getVar('ISAR_USE_CACHED_BASE_REPO')) else "" }"
inherit base-apt-helper
python () {
distro_bootstrap_keys = (d.getVar("DISTRO_BOOTSTRAP_KEYS", False) or "").split()
third_party_apt_keys = (d.getVar("THIRD_PARTY_APT_KEYS", False) or "").split()
# The cached repo key can be both for bootstrapping and apt package
# installation afterwards. However, debootstrap will include the key into
# the rootfs automatically thus the right place is distro_bootstrap_keys.
if bb.utils.to_boolean(d.getVar('ISAR_USE_CACHED_BASE_REPO')):
own_pub_key = d.getVar("BASE_REPO_KEY", False)
if own_pub_key:
distro_bootstrap_keys += own_pub_key.split()
for key in distro_bootstrap_keys:
d.appendVar("SRC_URI", " %s" % key)
fetcher = bb.fetch2.Fetch([key], d)
filename = fetcher.localpath(key)
d.appendVar("DISTRO_BOOTSTRAP_KEYFILES", " %s" % filename)
for key in third_party_apt_keys:
d.appendVar("SRC_URI", " %s" % key)
fetcher = bb.fetch2.Fetch([key], d)
filename = fetcher.localpath(key)
d.appendVar("THIRD_PARTY_APT_KEYFILES", " %s" % filename)
}
def aggregate_files(d, file_list, file_out):
import shutil
with open(file_out, "wb") as out_fd:
for entry in file_list:
entry_real = bb.parse.resolve_file(entry, d)
with open(entry_real, "rb") as in_fd:
shutil.copyfileobj(in_fd, out_fd, 1024*1024*10)
out_fd.write("\n".encode())
def parse_aptsources_list_line(source_list_line):
import re
s = source_list_line.strip()
if s.startswith("#"):
return None
type, s = re.split("\s+", s, maxsplit=1)
if type not in ["deb", "deb-src"]:
return None
options = ""
options_match = re.match("\[\s*(\S+=\S+(?=\s))*\s*(\S+=\S+)\s*\]\s+", s)
if options_match:
options = options_match.group(0).strip()
s = s[options_match.end():]
source, s = re.split("\s+", s, maxsplit=1)
suite, s = re.split("\s+", s, maxsplit=1)
components = " ".join(s.split())
return [type, options, source, suite, components]
def get_apt_source_mirror(d, aptsources_entry_list):
import re
premirrors = d.getVar('DISTRO_APT_PREMIRRORS', True) or ""
mirror_list = [entry.split()
for entry in premirrors.split('\\n')
if any(entry)]
for regex, replace in mirror_list:
match = re.search(regex, aptsources_entry_list[2])
if match:
new_aptsources_entry_list = aptsources_entry_list.copy()
new_aptsources_entry_list[2] = re.sub(regex, replace,
aptsources_entry_list[2],
count = 1)
return new_aptsources_entry_list
return aptsources_entry_list
def aggregate_aptsources_list(d, file_list, file_out):
import shutil
with open(file_out, "wb") as out_fd:
for entry in file_list:
entry_real = bb.parse.resolve_file(entry, d)
with open(entry_real, "r") as in_fd:
for line in in_fd:
parsed = parse_aptsources_list_line(line)
if parsed:
parsed = get_apt_source_mirror(d, parsed)
out_fd.write(" ".join(parsed).encode())
else:
out_fd.write(line.encode())
out_fd.write("\n".encode())
out_fd.write("\n".encode())
def get_aptsources_list(d, is_host=False):
if is_host:
apt_sources_list = (d.getVar("HOST_DISTRO_APT_SOURCES", True) or "").split()
else:
apt_sources_list = (d.getVar("DISTRO_APT_SOURCES", True) or "").split()
return apt_sources_list
def generate_distro_sources(d, is_host=False):
apt_sources_list = get_aptsources_list(d, is_host)
for entry in apt_sources_list:
entry_real = bb.parse.resolve_file(entry, d)
with open(entry_real, "r") as in_fd:
for line in in_fd:
parsed = parse_aptsources_list_line(line)
if parsed:
parsed = get_apt_source_mirror(d, parsed)
yield parsed
def get_distro_primary_source_entry(d, is_host=False):
apt_sources_list = get_aptsources_list(d, is_host)
for source in generate_distro_sources(d, is_host):
if source[0] == "deb":
return source[2:]
return ["", "", ""]
def get_distro_have_https_source(d, is_host=False):
return any(source[2].startswith("https://") for source in generate_distro_sources(d, is_host))
def get_distro_needs_https_support(d, is_host=False):
distro_bootstrap_keys = d.getVar("DISTRO_BOOTSTRAP_KEYS", False)
if distro_bootstrap_keys and distro_bootstrap_keys != "":
# debootstrap falls back to https if there is no
# 'reliable' keyring, whatever that means, but it happened
# https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=891009
return "https-support"
if get_distro_have_https_source(d, is_host):
return "https-support"
else:
return ""
def get_distro_needs_gpg_support(d):
apt_keys = d.getVar("THIRD_PARTY_APT_KEYS", False)
if apt_keys and apt_keys != "":
return "gnupg"
return ""
OVERRIDES_append = ":${@get_distro_needs_gpg_support(d)}"
def get_distro_source(d, is_host):
return get_distro_primary_source_entry(d, is_host)[0]
def get_distro_suite(d, is_host):
return get_distro_primary_source_entry(d, is_host)[1]
def get_distro_components_argument(d, is_host):
components = get_distro_primary_source_entry(d, is_host)[2]
if components and components.strip():
return "--components=" + ",".join(components.split())
else:
return ""
APT_KEYS_DIR := "${WORKDIR}/aptkeys"
DISTRO_BOOTSTRAP_KEYRING := "${WORKDIR}/distro-keyring.gpg"
do_generate_keyrings[cleandirs] = "${APT_KEYS_DIR}"
do_generate_keyrings[dirs] = "${DL_DIR}"
do_generate_keyrings[vardeps] += "DISTRO_BOOTSTRAP_KEYS THIRD_PARTY_APT_KEYS"
do_generate_keyrings() {
if [ -n "${@d.getVar("THIRD_PARTY_APT_KEYFILES", True) or ""}" ]; then
chmod 777 "${APT_KEYS_DIR}"
for keyfile in ${@d.getVar("THIRD_PARTY_APT_KEYFILES", True)}; do
cp "$keyfile" "${APT_KEYS_DIR}"/"$(basename "$keyfile")"
done
fi
if [ -n "${@d.getVar("DISTRO_BOOTSTRAP_KEYFILES", True) or ""}" ]; then
for keyfile in ${@d.getVar("DISTRO_BOOTSTRAP_KEYFILES", True)}; do
sudo apt-key --keyring "${DISTRO_BOOTSTRAP_KEYRING}" add $keyfile
done
fi
}
addtask generate_keyrings before do_build after do_unpack
def get_host_release():
import platform
rel = platform.release()
return rel
do_bootstrap[vardeps] += "DISTRO_APT_PREMIRRORS"
do_bootstrap[dirs] = "${DEPLOY_DIR_BOOTSTRAP}"
isar_bootstrap() {
IS_HOST=""
while true; do
case "$1" in
--host) IS_HOST=1 ;;
-*) bbfatal "$0: invalid option specified: $1" ;;
*) break ;;
esac
shift
done
debootstrap_args="--verbose --variant=minbase --include=${DISTRO_BOOTSTRAP_BASE_PACKAGES}"
if [ ! "x${DISTRO_BOOTSTRAP_KEYS}" = "x" ] || \
[ "${ISAR_USE_CACHED_BASE_REPO}" = "1" ]; then
debootstrap_args="$debootstrap_args --keyring=${DISTRO_BOOTSTRAP_KEYRING}"
fi
if [ "${ISAR_USE_CACHED_BASE_REPO}" = "1" ]; then
if [ -z "${BASE_REPO_KEY}" ] ; then
debootstrap_args="$debootstrap_args --no-check-gpg"
fi
fi
E="${@bb.utils.export_proxies(d)}"
export IS_HOST debootstrap_args E
sudo -E -s <<'EOSUDO'
( flock 9
set -e
if [ ! -e "${DEPLOY_ISAR_BOOTSTRAP}" ]; then
rm -rf "${ROOTFSDIR}"
if [ ${IS_HOST} ]; then
${DEBOOTSTRAP} $debootstrap_args \
${@get_distro_components_argument(d, True)} \
"${@get_distro_suite(d, True)}" \
"${ROOTFSDIR}" \
"${@get_distro_source(d, True)}"
else
"${DEBOOTSTRAP}" $debootstrap_args \
--arch="${DISTRO_ARCH}" \
${@get_distro_components_argument(d, False)} \
"${@get_distro_suite(d, False)}" \
"${ROOTFSDIR}" \
"${@get_distro_source(d, False)}"
fi
# Install apt config
mkdir -p "${ROOTFSDIR}/etc/apt/preferences.d"
install -v -m644 "${APTPREFS}" \
"${ROOTFSDIR}/etc/apt/preferences.d/bootstrap"
mkdir -p "${ROOTFSDIR}/etc/apt/sources.list.d"
if [ "${ISAR_USE_CACHED_BASE_REPO}" = "1" ]; then
sed -e "s#{BASE_DISTRO}#"${BASE_DISTRO}"#g" \
-e "s#{BASE_DISTRO_CODENAME}#"${BASE_DISTRO_CODENAME}"#g" \
-i ${BASEAPTSRCS}
mkdir -p ${ROOTFSDIR}/base-apt
sudo mount --bind ${REPO_BASE_DIR} ${ROOTFSDIR}/base-apt
install -v -m644 "${BASEAPTSRCS}" \
"${ROOTFSDIR}/etc/apt/sources.list.d/base-apt.list"
else
install -v -m644 "${APTSRCS}" \
"${ROOTFSDIR}/etc/apt/sources.list.d/bootstrap.list"
fi
install -v -m644 "${APTSRCS_INIT}" \
"${ROOTFSDIR}/etc/apt/sources-list"
rm -f "${ROOTFSDIR}/etc/apt/sources.list"
mkdir -p "${ROOTFSDIR}/etc/apt/apt.conf.d"
install -v -m644 "${WORKDIR}/isar-apt.conf" \
"${ROOTFSDIR}/etc/apt/apt.conf.d/50isar.conf"
find ${APT_KEYS_DIR}/ -type f | while read keyfile
do
kfn="$(basename $keyfile)"
cp $keyfile "${ROOTFSDIR}/tmp/$kfn"
sudo -E chroot "${ROOTFSDIR}" /usr/bin/apt-key \
--keyring ${THIRD_PARTY_APT_KEYRING} add "/tmp/$kfn"
rm "${ROOTFSDIR}/tmp/$kfn"
done
if [ "${@get_distro_suite(d, True)}" = "stretch" ] && [ "${@get_host_release().split('.')[0]}" -lt "4" ]; then
install -v -m644 "${WORKDIR}/isar-apt-fallback.conf" \
"${ROOTFSDIR}/etc/apt/apt.conf.d/55isar-fallback.conf"
fi
# Set locale
install -v -m644 "${WORKDIR}/locale" "${ROOTFSDIR}/etc/locale"
sed -i '/en_US.UTF-8 UTF-8/s/^#//g' "${ROOTFSDIR}/etc/locale.gen"
chroot "${ROOTFSDIR}" /usr/sbin/locale-gen
# setup chroot
install -v -m755 "${WORKDIR}/chroot-setup.sh" "${ROOTFSDIR}/chroot-setup.sh"
"${ROOTFSDIR}/chroot-setup.sh" "setup" "${ROOTFSDIR}"
# update APT
mount --rbind /dev ${ROOTFSDIR}/dev
mount --make-rslave ${ROOTFSDIR}/dev
mount -t proc none ${ROOTFSDIR}/proc
mount --rbind /sys ${ROOTFSDIR}/sys
mount --make-rslave ${ROOTFSDIR}/sys
export DEBIAN_FRONTEND=noninteractive
chroot "${ROOTFSDIR}" /usr/bin/apt-get update -y
chroot "${ROOTFSDIR}" /usr/bin/apt-get dist-upgrade -y \
-o Debug::pkgProblemResolver=yes
umount -l "${ROOTFSDIR}/dev"
umount -l "${ROOTFSDIR}/proc"
umount -l "${ROOTFSDIR}/sys"
umount -l "${ROOTFSDIR}/base-apt" || true
# Finalize debootstrap by setting the link in deploy
ln -Tfsr "${ROOTFSDIR}" "${DEPLOY_ISAR_BOOTSTRAP}"
fi
) 9>'${ISAR_BOOTSTRAP_LOCK}'
EOSUDO
}
CLEANFUNCS = "clean_deploy"
clean_deploy() {
rm -f "${DEPLOY_ISAR_BOOTSTRAP}"
}