Initial add of gentoo support for diskimage-builder

uses upstream's stage4 images, includes all the needed bells and
whistles for openstack on kvm.

Change-Id: Ibca43173c30c2a74a73a2e2d9dd6d6d832c62694
Closes-Bug: 1530911

elements/base/pkg-map

@@ -5,6 +5,11 @@
     },
     "suse": {
       "dkms_package": ""
+    },
+    "gentoo": {
+      "dkms_package": "",
+      "grub-pc": "grub",
+      "extlinux": "syslinux"
     }
   },
   "default": {

elements/bootloader/finalise.d/50-bootloader

@@ -19,7 +19,7 @@ else
 fi
 
 function install_extlinux {
-    install-packages extlinux
+    install-packages -m base extlinux
 
     echo "Installing Extlinux..."
 
@@ -59,9 +59,9 @@ function install_grub2 {
     if [ -f "/tmp/grub/install" ] ; then
         source /tmp/grub/install
     elif [[ "$ARCH" =~ "ppc" ]]; then
-        install-packages grub-ieee1275
+        install-packages -m base grub-ieee1275
     else
-        install-packages grub-pc
+        install-packages -m base grub-pc
     fi
 
     # XXX: grub-probe on the nbd0/loop0 device returns nothing - workaround, manually

elements/gentoo/README.rst

@@ -0,0 +1,26 @@
+========
+Gentoo
+========
+Use a Gentoo cloud image as the baseline for built disk images. The images are
+located in profile specific sub directories:
+
+    http://distfiles.gentoo.org/releases/amd64/autobuilds/
+
+As of this writing, only x86_64 images are available.
+
+Notes:
+
+* There are very frequently new automated builds that include changes that
+  happen during the product maintenance. The download directories contain an
+  unversioned name and a versioned name. The unversioned name will always
+  point to the latest image, but will frequently change its content. The versioned
+  one will never change content, but will frequently be deleted and replaced
+  by a newer build with a higher version-release number.
+
+* Other profiles can be used by exporting GENTOO_PROFILE with a valid profile.
+  A list of valid profiles follows:
+
+    default/linux/amd64/13.0
+    default/linux/amd64/13.0/no-multilib
+    hardened/linux/amd64
+    hardened/linux/amd64/no-multilib

elements/gentoo/bin/install-packages

@@ -0,0 +1,121 @@
+#!/usr/bin/env bash
+
+# Copyright 2016 Matthew Thode
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+
+if [[ "${DIB_DEBUG_TRACE:-0}" -gt 0 ]]; then
+    set -x
+fi
+set -eu
+set -o pipefail
+
+ACTION='install'
+
+SCRIPTNAME="$(basename $0)"
+function show_options {
+    echo "Usage: ${SCRIPTNAME} [package ...]"
+    echo
+    echo 'Options:'
+    echo '    -u          -- update all packages'
+    echo '    -e          -- erase/remove packages'
+    exit 0
+}
+
+function fix_shm {
+    if [[ "${RUN_ONCE_SHM}" == '1' ]]; then
+        mv /dev/shm /dev/shm.orig
+        mkdir /dev/shm
+        mount -t tmpfs none /dev/shm
+        chmod 1777 /dev/shm
+        RUN_ONCE_SHM='0'
+    fi
+}
+
+function unfix_shm {
+    if [[ "${RUN_ONCE_SHM}" == '0' ]]; then
+        umount /dev/shm
+        rmdir /dev/shm
+        mv /dev/shm.orig /dev/shm
+    fi
+}
+
+function install_gentoo_packages {
+    RUN_ONCE_SHM='1'
+    fix_shm
+    emerge "$@"
+    unfix_shm
+}
+
+TEMP="$(getopt -o huem: -n ${SCRIPTNAME} -- ${@})"
+if [[ "${?}" != 0 ]]; then
+    echo 'Terminating...' >&2
+    exit 1
+fi
+eval set -- "${TEMP}"
+
+while true; do
+    case "${1}" in
+        -u )
+            emerge-webrsync -q
+            install_gentoo_packages -uDNv --with-bdeps=y --jobs=2 @world
+            install_gentoo_packages --verbose=n --depclean
+            install_gentoo_packages -v --usepkg=n @preserved-rebuild
+            etc-update --automode -5
+            eselect news read new
+            exit 0;
+            ;;
+        -e )
+            ACTION='remove'
+            shift
+            ;;
+        -m )
+            MAP_ELEMENT="${2}"
+            shift 2
+            ;;
+        -h )
+            show_options
+            ;;
+        -- )
+            shift
+            break
+            ;;
+        * )
+            echo "Error: unsupported option ${1}."
+            exit 1
+            ;;
+    esac
+done
+
+PKGS="${@}"
+if [[ -n "${MAP_ELEMENT:-}" ]]; then
+    PKGS="$(pkg-map --element ${MAP_ELEMENT} ${@})"
+    if [[ "${?}" != 0 ]]; then
+        echo "bin/pkg-map error. ${PKGS}"
+        exit 1
+    fi
+fi
+
+if [[ -z "${PKGS}" ]]; then
+    echo "Not running install-packages ${ACTION} with empty packages list"
+else
+    if [[ "${ACTION}" == 'install' ]]; then
+        emerge-webrsync -q
+        install_gentoo_packages -q --jobs=2 --changed-use "${PKGS}"
+    elif [[ "${ACTION}" == 'remove' ]]; then
+        emerge-webrsync -q
+        install_gentoo_packages -C "${PKGS}"
+    else
+        echo 'something when really wrong, install action is not install or remove'
+    fi
+fi

elements/gentoo/element-deps

@@ -0,0 +1,2 @@
+cache-url
+dib-run-parts

elements/gentoo/element-provides

@@ -0,0 +1 @@
+operating-system

elements/gentoo/environment.d/10-gentoo-distro-name.bash

@@ -0,0 +1 @@
+export DISTRO_NAME=gentoo

elements/gentoo/gentoo-releng.gpg

@@ -0,0 +1,84 @@
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+eas/U0Nj6KQR////////////////////////////////////////////////////
+////////////////////////////////////////////////////////////////
+////////////////////////////////////////////////////////////////
+////////////////////////////////////////////////////////////////
+////////////////////////////////////////////////////////////////
+////////////////////////////////////////////////////////////////
+////////////////////////////////////////////////////////////////
+/////////////////////////////////////////////////////////w==
+=1qLu
+-----END PGP PUBLIC KEY BLOCK-----

elements/gentoo/pre-install.d/01-gentoo-install

@@ -0,0 +1,9 @@
+#!/bin/bash
+
+if [ ${DIB_DEBUG_TRACE:-0} -gt 0 ]; then
+    set -x
+fi
+set -eu
+set -o pipefail
+
+install -m 0755 -o root -g root $(dirname $0)/../bin/* /usr/local/bin

elements/gentoo/root.d/10-gentoo-image

@@ -0,0 +1,104 @@
+#!/usr/bin/env bash
+# Copyright 2016 Matthew Thode
+# All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+
+if [ "${DIB_DEBUG_TRACE:-0}" -gt 0 ]; then
+    set -x
+fi
+set -eu
+set -o pipefail
+
+[ -n "${ARCH}" ]
+[ -n "${TARGET_ROOT}" ]
+
+if [ 'amd64' = "${ARCH}" ] ; then
+    ARCH='x86_64'
+fi
+
+if ! [ 'x86_64' = "${ARCH}" ] ; then
+    echo "Only x86_64 images are currently available but ARCH is set to ${ARCH}."
+    exit 1
+fi
+
+# get the element location so we can refrence things relative to it
+ELEMENT_DIR=${ELEMENT_DIR:-"${ELEMENTS_PATH}/gentoo"}
+# valid gentoo profiles are as follows
+# default/linux/amd64/13.0
+# default/linux/amd64/13.0/no-multilib
+# hardened/linux/amd64
+# hardened/linux/amd64/no-multilib
+GENTOO_PROFILE=${GENTOO_PROFILE:-'default/linux/amd64/13.0'}
+if [[ "${GENTOO_PROFILE}" == "default/linux/amd64/13.0" ]]; then
+    FILENAME_BASE='gentoo-stage4'
+    SIGNED_SOURCE_SUFFIX='cloud'
+elif [[ "${GENTOO_PROFILE}" == "default/linux/amd64/13.0/no-multilib" ]]; then
+    FILENAME_BASE='gentoo-stage4-nomultilib'
+    SIGNED_SOURCE_SUFFIX='cloud-nomultilib'
+elif [[ "${GENTOO_PROFILE}" == "hardened/linux/amd64" ]]; then
+    FILENAME_BASE='gentoo-stage4-hardened'
+    SIGNED_SOURCE_SUFFIX='hardened+cloud'
+elif [[ "${GENTOO_PROFILE}" == "hardened/linux/amd64/no-multilib" ]]; then
+    FILENAME_BASE='gentoo-stage4-hardened-nomultilib'
+    SIGNED_SOURCE_SUFFIX='hardened+cloud-nomultilib'
+else
+    echo 'invalid profile, please select from the following profiles'
+    echo 'default/linux/amd64/13.0'
+    echo 'default/linux/amd64/13.0/no-multilib'
+    echo 'hardened/linux/amd64'
+    echo 'hardened/linux/amd64/no-multilib'
+    exit 1
+fi
+
+DIB_CLOUD_SOURCE=${DIB_CLOUD_SOURCE:-"http://distfiles.gentoo.org/releases/amd64/autobuilds/latest-stage4-amd64-${SIGNED_SOURCE_SUFFIX}.txt"}
+BASE_IMAGE_FILE=${BASE_IMAGE_FILE:-"http://distfiles.gentoo.org/releases/amd64/autobuilds/$(curl ${DIB_CLOUD_SOURCE} -s | tail -n 1 | cut -d\  -f 1)"}
+SIGNATURE_FILE="${SIGNATURE_FILE:-${BASE_IMAGE_FILE}.DIGESTS.asc}"
+CACHED_FILE="${DIB_IMAGE_CACHE}/${FILENAME_BASE}.tar.bz2"
+CACHED_SIGNATURE_FILE="${DIB_IMAGE_CACHE}/${FILENAME_BASE}.asc"
+
+if [ -n "${DIB_OFFLINE}" -a -f "${CACHED_FILE}" ] ; then
+    echo "Not checking freshness of cached ${CACHED_FILE}"
+else
+    echo 'Fetching Base Image'
+    "${TMP_HOOKS_PATH}"/bin/cache-url "${SIGNATURE_FILE}" "${CACHED_SIGNATURE_FILE}"
+    "${TMP_HOOKS_PATH}"/bin/cache-url "${BASE_IMAGE_FILE}" "${CACHED_FILE}"
+    pushd "${DIB_IMAGE_CACHE}"
+    # import the key
+    # this key can be verified at one of the following places
+    # https://wiki.gentoo.org/wiki/Project:RelEng#Keys
+    # https://dev.gentoo.org/~dolsen/releases/keyrings/gentoo-keys-*.tar.xz
+    # http://distfiles.gentoo.org/distfiles/gentoo-keys-*.tar.xz
+    GPGDIR=$(mktemp -d -t)
+    gpg --no-default-keyring --keyring "${GPGDIR}"/gentookeys.gpg --import "${ELEMENT_DIR}"/gentoo-releng.gpg
+    # check the sig file
+    gpgv --keyring "${GPGDIR}"/gentookeys.gpg "${CACHED_SIGNATURE_FILE}"
+    if [[ "${?}" != 0 ]]; then
+        echo 'invalid signature file'
+        exit 1
+    fi
+    rm -rf "${GPGDIR}"
+    echo 'valid key used'
+    CACHED_SHA512SUM=$(grep -A1 -e 'SHA512' "${CACHED_SIGNATURE_FILE}" | grep -e 'tar.bz2$' | cut -d\  -f 1)
+    ACTUAL_SHA512SUM=$(sha512sum "${CACHED_FILE}" | cut -d\  -f 1)
+    if [[ "${ACTUAL_SHA512SUM}" != "${CACHED_SHA512SUM}" ]]; then
+        echo "invalid checksum on downloaded tarball: ${CACHED_FILE}"
+        exit 1
+    fi
+    echo 'valid checksum'
+    popd
+fi
+
+# Extract the base image (use --numeric-owner to avoid UID/GID mismatch between
+# image tarball and host OS)
+sudo tar -C "${TARGET_ROOT}" --numeric-owner --xattrs -xjpf "${CACHED_FILE}"

elements/pkg-map/bin/pkg-map

@@ -33,6 +33,8 @@ def os_family(distro):
         family = 'debian'
     elif distro == 'opensuse':
         family = 'suse'
+    elif distro == 'gentoo':
+        family = 'gentoo'
 
     return family
 

elements/svc-map/tests/test_data_merge.py

@@ -13,13 +13,12 @@
 #    under the License.
 import imp
 import os
+from oslotest import base
 
 module_path = (os.path.dirname(os.path.realpath(__file__)) +
                '/../extra-data.d/10-merge-svc-map-files')
 service_map = imp.load_source('service_map', module_path)
 
-from oslotest import base
-
 
 class TestDataMerge(base.BaseTestCase):
 

lib/img-functions

@@ -191,6 +191,9 @@ function select_boot_kernel_initrd () {
     elif [ -f $TARGET_ROOT/etc/SuSE-release ]; then
         KERNEL=$(basename $(readlink -e $BOOTDIR/vmlinuz))
         RAMDISK=$(basename $(readlink -e $BOOTDIR/initrd))
+    elif [[ -f "${TARGET_ROOT}"/etc/gentoo-release ]]; then
+        KERNEL="$(basename $(ls -1rv $BOOTDIR/kernel-*-openstack | head -n 1))"
+        RAMDISK="$(basename $(ls -1rv $BOOTDIR/initramfs-*-openstack | head -n 1))"
     else
         echo "ERROR: Unable to detect operating system"
         exit 1