makeroot.sh revision 262652
1#!/bin/sh -e 2#- 3# Copyright (c) 2012-2013 SRI International 4# Copyright (c) 2012 Robert N. M. Watson 5# All rights reserved. 6# 7# This software was developed by SRI International and the University of 8# Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237) 9# ("CTSRD"), as part of the DARPA CRASH research programme. 10# 11# Redistribution and use in source and binary forms, with or without 12# modification, are permitted provided that the following conditions 13# are met: 14# 1. Redistributions of source code must retain the above copyright 15# notice, this list of conditions and the following disclaimer. 16# 2. Redistributions in binary form must reproduce the above copyright 17# notice, this list of conditions and the following disclaimer in the 18# documentation and/or other materials provided with the distribution. 19# 20# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 21# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 24# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30# SUCH DAMAGE. 31# 32# $FreeBSD: stable/10/tools/tools/makeroot/makeroot.sh 262652 2014-03-01 04:49:55Z brooks $ 33 34usage() 35{ 36 cat <<EOF 1>&2 37usage: makeroot.sh [-B byte-order] [-d] [-e <extras manifest>] [-f <filelist>] 38 [-k <keydir> [-K <user>]] 39 [-p <master.passwd> [-g <groupfile>]] [-s <size>] 40 <image> <bsdroot> 41EOF 42 exit 1 43} 44 45warn() 46{ 47 echo `basename $0` "$@" 1>&2 48} 49 50err() 51{ 52 ret=$1 53 shift 54 warn "$@" 55 exit $ret 56} 57 58atexit() 59{ 60 if [ -z "${DEBUG}" ]; then 61 rm -rf ${tmpdir} 62 else 63 warn "temp directory left at ${tmpdir}" 64 fi 65} 66 67DEBUG= 68# Allow duplicate manifest entries when not file list is given because the 69# FreeBSD METALOG still includes it. 70DUPFLAG=-D 71EXTRAS= 72FILELIST= 73GROUP= 74KEYDIR= 75KEYUSERS= 76PASSWD= 77 78while getopts "B:de:f:g:K:k:p:s:" opt; do 79 case "$opt" in 80 B) BFLAG="-B ${OPTARG}" ;; 81 d) DEBUG=1 ;; 82 e) EXTRAS="${EXTRAS} ${OPTARG}" ;; 83 f) FILELIST="${OPTARG}"; DUPFLAG= ;; 84 g) GROUP="${OPTARG}" ;; 85 K) KEYUSERS="${KEYUSERS} ${OPTARG}" ;; 86 k) KEYDIR="${OPTARG}" ;; 87 p) PASSWD="${OPTARG}" ;; 88 s) SIZE="${OPTARG}" ;; 89 *) usage ;; 90 esac 91done 92shift $(($OPTIND - 1)) 93 94if [ $# -ne 2 ]; then 95 usage; 96fi 97 98IMGFILE=$(realpath $(dirname $1))/$(basename $1) 99BSDROOT=$2 100 101DBDIR=${BSDROOT}/etc 102 103if [ ! -r ${BSDROOT}/METALOG ]; then 104 err 1 "${BSDROOT} does not contain a METALOG" 105fi 106 107if [ -n "${GROUP}" -a -z "${PASSWD}" ]; then 108 warn "-g requires -p" 109 usage 110fi 111 112if [ -n "${KEYUSERS}" -a -z "${KEYDIR}" ]; then 113 warn "-K requires -k" 114 usage 115fi 116if [ -n "${KEYDIR}" -a -z "${KEYUSERS}" ]; then 117 KEYUSERS=root 118fi 119 120tmpdir=`mktemp -d /tmp/makeroot.XXXXX` 121if [ -z "${tmpdir}" -o ! -d "${tmpdir}" ]; then 122 err 1 "failed to create tmpdir" 123fi 124trap atexit EXIT 125 126manifest=${tmpdir}/manifest 127 128echo "#mtree 2.0" > ${manifest} 129 130if [ -n "${PASSWD}" ]; then 131 cp ${PASSWD} ${tmpdir}/master.passwd 132 pwd_mkdb -d ${tmpdir} -p ${tmpdir}/master.passwd 133 if [ -z "${GROUP}" ]; then 134 cp ${DBDIR}/group ${tmpdir} 135 else 136 cp ${GROUP} ${tmpdir} 137 fi 138 139 cat <<EOF >> ${tmpdir}/passwd.mtree 140./etc/group type=file uname=root gname=wheel mode=0644 contents=${tmpdir}/group 141./etc/master.passwd type=file uname=root gname=wheel mode=0600 contents=${tmpdir}/master.passwd 142./etc/passwd type=file mode=0644 uname=root gname=wheel contents=${tmpdir}/passwd 143./etc/pwd.db type=file mode=0644 uname=root gname=wheel contents=${tmpdir}/pwd.db 144./etc/spwd.db type=file mode=0600 uname=root gname=wheel contents=${tmpdir}/spwd.db 145EOF 146 EXTRAS="${EXTRAS} ${tmpdir}/passwd.mtree" 147 148 DBDIR=${tmpdir} 149fi 150 151if [ -n "${FILELIST}" ]; then 152 # build manifest from root manifest and FILELIST 153 (echo .; grep -v ^# ${FILELIST} | while read path; do 154 # Print each included path and all its sub-paths with a ./ 155 # prepended. The "sort -u" will then discard all the 156 # duplicate directory entries. This ensures that we 157 # extract the permissions for each unlisted directory 158 # from the METALOG. 159 path="/${path}" 160 while [ -n "${path}" ]; do 161 echo ".${path}" 162 path="${path%/*}" 163 done 164 done) | sort -u ${BSDROOT}/METALOG - | \ 165 awk ' 166 !/ type=/ { file = $1 } 167 / type=/ { if ($1 == file) {print} }' >> ${manifest} 168else 169 # Start with all the files in BSDROOT/METALOG except those in 170 # one of the EXTRAS manifests. 171 grep -h type=file ${EXTRAS} | cut -d' ' -f1 | \ 172 sort -u ${BSDROOT}/METALOG - | awk ' 173 !/ type=/ { file = $1 } 174 / type=/ { if ($1 != file) {print} }' >> ${manifest} 175fi 176 177# For each extras file, add contents keys relative to the directory the 178# manifest lives in for each file line that does not have one. Adjust 179# contents keys relative to ./ to be relative to the same directory. 180for eman in ${EXTRAS}; do 181 if [ ! -f ${eman} ]; then 182 err 1 "${eman} is not a regular file" 183 fi 184 extradir=`realpath ${eman}`; extradir=`dirname ${extradir}` 185 186 awk '{ 187 if ($0 !~ /type=file/) { 188 print 189 } else { 190 if ($0 !~ /contents=/) { 191 printf ("%s contents=%s\n", $0, $1) 192 } else { 193 print 194 } 195 } 196 }' ${eman} | \ 197 sed -e "s|contents=\./|contents=${extradir}/|" >> ${manifest} 198done 199 200# /etc/rcorder.start allows the startup order to be stable even if 201# not all startup scripts are installed. In theory it should be 202# unnecessicary, but dependencies in rc.d appear to be under recorded. 203# This is a hack local to beri/cheribsd. 204# 205echo /etc/rc.d/FIRST > ${tmpdir}/rcorder.start 206rcorder -s nostart ${BSDROOT}/etc/rc.d/* | sed -e "s:^${BSDROOT}::" | \ 207 grep -v LAST | grep -v FIRST >> \ 208 ${tmpdir}/rcorder.start 209echo /etc/rc.d/LAST >> ${tmpdir}/rcorder.start 210echo "./etc/rcorder.start type=file mode=644 uname=root gname=wheel" \ 211 "contents=${tmpdir}/rcorder.start" >> ${manifest} 212 213# Add all public keys in KEYDIR to roots' authorized_keys file. 214if [ -n "${KEYDIR}" ]; then 215 cat ${KEYDIR}/*.pub > ${tmpdir}/authorized_keys 216 if [ ! -s ${tmpdir}/authorized_keys ]; then 217 err 1 "no keys found in ${KEYDIR}" 218 fi 219 for user in ${KEYUSERS}; do 220 userdir=`awk -F: "{if (\\\$1 == \"${user}\") {print \\\$9; exit} }" ${DBDIR}/master.passwd` 221 gid=`awk -F: "{if (\\\$1 == \"${user}\") {print \\\$4; exit} }" ${DBDIR}/master.passwd` 222 group=`awk -F: "{if (\\\$3 == \"${gid}\") {print \\\$1; exit} }" ${DBDIR}/group` 223 if [ -z "${userdir}" ]; then 224 err 1 "${user}: not found in ${DBDIR}/master.passwd" 225 fi 226 echo ".${userdir}/.ssh type=dir mode=700 uname=${user} gname=${group}" >> ${manifest} 227 echo ".${userdir}/.ssh/authorized_keys type=file mode=600 uname=${user} gname=${group} contents=${tmpdir}/authorized_keys" >> ${manifest} 228 done 229fi 230 231if [ -n "${SIZE}" ]; then 232SIZEFLAG="-s ${SIZE}" 233fi 234 235cd ${BSDROOT}; makefs ${DUPFLAG} -N ${DBDIR} ${SIZEFLAG} ${BFLAG} \ 236 -t ffs -f 256 ${IMGFILE} ${manifest} 237