1#!/bin/sh 2# 3# Copyright (c) 2016 Will Andrews 4# All rights reserved. 5# 6# Redistribution and use in source and binary forms, with or without 7# modification, are permitted provided that the following conditions 8# are met: 9# 1. Redistributions of source code must retain the above copyright 10# notice, this list of conditions and the following disclaimer 11# in this position and unchanged. 12# 2. Redistributions in binary form must reproduce the above copyright 13# notice, this list of conditions and the following disclaimer in the 14# documentation and/or other materials provided with the distribution. 15# 16# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26# 27# $FreeBSD$ 28# 29## 30# Install a boot environment using the current FreeBSD source tree. 31# Requires a fully built world & kernel. 32# 33# Non-base tools required: beadm, pkg 34# 35# In a sandbox for the new boot environment, this script also runs etcupdate 36# and pkg upgrade automatically in the sandbox. Upon successful completion, 37# the system will be ready to boot into the new boot environment. Upon 38# failure, the target boot environment will be destroyed. In all cases, the 39# running system is left untouched. 40# 41## Usage: 42# beinstall [optional world/kernel flags e.g. KERNCONF] 43# 44## User modifiable variables - set these in the environment if desired. 45# If not empty, 'pkg upgrade' will be skipped. 46NO_PKG_UPGRADE="${NO_PKG_UPGRADE:-""}" 47# Config updater - 'etcupdate' and 'mergemaster' are supported. Set to an 48# empty string to skip. 49CONFIG_UPDATER="${CONFIG_UPDATER:-"etcupdate"}" 50# Flags for etcupdate if used. 51ETCUPDATE_FLAGS="${ETCUPDATE_FLAGS:-"-F"}" 52# Flags for mergemaster if used. 53MERGEMASTER_FLAGS="${MERGEMASTER_FLAGS:-"-iFU"}" 54 55 56######################################################################## 57## Constants 58ETCUPDATE_CMD="etcupdate" 59MERGEMASTER_CMD="mergemaster" 60 61## Functions 62cleanup() { 63 [ -z "${cleanup_commands}" ] && return 64 echo "Cleaning up ..." 65 for command in ${cleanup_commands}; do 66 ${command} 67 done 68} 69 70errx() { 71 cleanup 72 echo "error: $@" 73 exit 1 74} 75 76rmdir_be() { 77 chflags -R noschg ${BE_MNTPT} 78 rm -rf ${BE_MNTPT} 79} 80 81unmount_be() { 82 mount | grep " on ${BE_MNTPT}" | awk '{print $3}' | sort -r | xargs -t umount -f 83} 84 85cleanup_be() { 86 # Before destroying, unmount any child filesystems that may have 87 # been mounted under the boot environment. Sort them in reverse 88 # order so children are unmounted first. 89 unmount_be 90 # Finally, clean up any directories that were created by the 91 # operation, via cleanup_be_dirs(). 92 if [ -n "${created_be_dirs}" ]; then 93 chroot ${BE_MNTPT} /bin/rm -rf ${created_be_dirs} 94 fi 95 beadm destroy -F ${BENAME} 96} 97 98create_be_dirs() { 99 echo "${BE_MNTPT}: Inspecting dirs $*" 100 for dir in $*; do 101 curdir="$dir" 102 topdir="$dir" 103 while :; do 104 [ -e "${BE_MNTPT}${curdir}" ] && break 105 topdir=$curdir 106 curdir=$(dirname ${curdir}) 107 done 108 [ "$curdir" = "$dir" ] && continue 109 110 # Add the top-most nonexistent directory to the list, then 111 # mkdir -p the innermost directory specified by the argument. 112 # This way the least number of directories are rm'd directly. 113 created_be_dirs="${topdir} ${created_be_dirs}" 114 echo "${BE_MNTPT}: Created ${dir}" 115 mkdir -p ${BE_MNTPT}${dir} || return $? 116 done 117 return 0 118} 119 120update_mergemaster_pre() { 121 mergemaster -p -m ${srcdir} -D ${BE_MNTPT} -t ${BE_MM_ROOT} ${MERGEMASTER_FLAGS} 122} 123 124update_mergemaster() { 125 chroot ${BE_MNTPT} \ 126 mergemaster -m ${srcdir} -t ${BE_MM_ROOT} ${MERGEMASTER_FLAGS} 127} 128 129update_etcupdate_pre() { 130 etcupdate -p -s ${srcdir} -D ${BE_MNTPT} ${ETCUPDATE_FLAGS} || return $? 131 etcupdate resolve -D ${BE_MNTPT} || return $? 132} 133 134update_etcupdate() { 135 chroot ${BE_MNTPT} \ 136 etcupdate -s ${srcdir} ${ETCUPDATE_FLAGS} || return $? 137 chroot ${BE_MNTPT} etcupdate resolve 138} 139 140 141# Special command-line subcommand that can be used to do a full cleanup 142# after a manual post-mortem has been completed. 143postmortem() { 144 [ -n "${BENAME}" ] || errx "Must specify BENAME" 145 [ -n "${BE_MNTPT}" ] || errx "Must specify BE_MNTPT" 146 echo "Performing post-mortem on BE ${BENAME} at ${BE_MNTPT} ..." 147 unmount_be 148 rmdir_be 149 echo "Post-mortem cleanup complete." 150 echo "To destroy the BE (recommended), run: beadm destroy ${BENAME}" 151 echo "To instead continue with the BE, run: beadm activate ${BENAME}" 152} 153 154if [ -n "$BEINSTALL_CMD" ]; then 155 ${BEINSTALL_CMD} $* 156 exit $? 157fi 158 159 160cleanup_commands="" 161trap 'errx "Interrupt caught"' HUP INT TERM 162 163[ "$(whoami)" != "root" ] && errx "Must be run as root" 164 165[ ! -f "Makefile.inc1" ] && errx "Must be in FreeBSD source tree" 166srcdir=$(pwd) 167objdir=$(make -V .OBJDIR 2>/dev/null) 168[ ! -d "${objdir}" ] && errx "Must have built FreeBSD from source tree" 169 170# May be a worktree, in which case .git is a file, not a directory. 171if [ -e .git ] ; then 172 commit_time=$(git show --format='%ct' 2>/dev/null | head -1) 173 [ $? -ne 0 ] && errx "Can't lookup git commit timestamp" 174 commit_ts=$(date -r ${commit_time} '+%Y%m%d.%H%M%S') 175elif [ -d .svn ] ; then 176 if [ -e /usr/bin/svnlite ]; then 177 svn=/usr/bin/svnlite 178 elif [ -e /usr/local/bin/svn ]; then 179 svn=/usr/local/bin/svn 180 else 181 errx "Unable to find subversion" 182 fi 183 commit_ts="$( "$svn" info --show-item last-changed-date | sed -e 's/\..*//' -e 's/T/./' -e 's/-//g' -e s'/://g' )" 184 [ $? -ne 0 ] && errx "Can't lookup Subversion commit timestamp" 185else 186 errx "Unable to determine source control type" 187fi 188 189commit_ver=$(${objdir}/bin/freebsd-version/freebsd-version -u 2>/dev/null) 190[ -z "${commit_ver}" ] && errx "Unable to determine FreeBSD version" 191 192BENAME="${commit_ver}-${commit_ts}" 193 194BE_TMP=$(mktemp -d /tmp/beinstall.XXXXXX) 195[ $? -ne 0 -o ! -d ${BE_TMP} ] && errx "Unable to create mountpoint" 196[ -z "$NO_CLEANUP_BE" ] && cleanup_commands="rmdir_be ${cleanup_commands}" 197BE_MNTPT=${BE_TMP}/mnt 198BE_MM_ROOT=${BE_TMP}/mergemaster # mergemaster will create 199mkdir -p ${BE_MNTPT} 200 201beadm create ${BENAME} >/dev/null || errx "Unable to create BE ${BENAME}" 202[ -z "$NO_CLEANUP_BE" ] && cleanup_commands="cleanup_be ${cleanup_commands}" 203 204beadm mount ${BENAME} ${BE_TMP}/mnt || errx "Unable to mount BE ${BENAME}." 205 206echo "Mounted ${BENAME} to ${BE_MNTPT}, performing install/update ..." 207make "$@" DESTDIR=${BE_MNTPT} installkernel || errx "Installkernel failed!" 208if [ -n "${CONFIG_UPDATER}" ]; then 209 "update_${CONFIG_UPDATER}_pre" 210 [ $? -ne 0 ] && errx "${CONFIG_UPDATER} (pre-world) failed!" 211fi 212 213# Mount the source and object tree within the BE in order to account for any 214# changes applied by the pre-installworld updater. Cleanup any directories 215# created if they didn't exist previously. 216create_be_dirs "${srcdir}" "${objdir}" || errx "Unable to create BE dirs" 217mount -t nullfs "${srcdir}" "${BE_MNTPT}${srcdir}" || errx "Unable to mount src" 218mount -t nullfs "${objdir}" "${BE_MNTPT}${objdir}" || errx "Unable to mount obj" 219mount -t devfs devfs "${BE_MNTPT}/dev" || errx "Unable to mount devfs" 220 221chroot ${BE_MNTPT} make "$@" -C ${srcdir} installworld || \ 222 errx "Installworld failed!" 223 224if [ -n "${CONFIG_UPDATER}" ]; then 225 "update_${CONFIG_UPDATER}" 226 [ $? -ne 0 ] && errx "${CONFIG_UPDATER} (post-world) failed!" 227fi 228 229BE_PKG="chroot ${BE_MNTPT} env ASSUME_ALWAYS_YES=true pkg" 230if [ -z "${NO_PKG_UPGRADE}" ]; then 231 ${BE_PKG} update || errx "Unable to update pkg" 232 ${BE_PKG} upgrade || errx "Unable to upgrade pkgs" 233fi 234 235if [ -n "$NO_CLEANUP_BE" ]; then 236 echo "Boot Environment ${BENAME} may be examined in ${BE_MNTPT}." 237 echo "Afterwards, run this to cleanup:" 238 echo " env BENAME=${BENAME} BE_MNTPT=${BE_MNTPT} BEINSTALL_CMD=postmortem $0" 239 exit 0 240fi 241 242unmount_be || errx "Unable to unmount BE" 243rmdir_be || errx "Unable to cleanup BE" 244beadm activate ${BENAME} || errx "Unable to activate BE" 245echo 246beadm list 247echo 248echo "Boot environment ${BENAME} setup complete; reboot to use it." 249