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207 lines
6.6 KiB
207 lines
6.6 KiB
#!/bin/bash
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#------------------------------------------------------------------------------
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# cl-builder
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# Copyright ©2009 Calculate Ltd.
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#------------------------------------------------------------------------------
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# выбор строки перемонтирования разделов в зависимости от используемого модуля
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BUILDER=/mnt/builder
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if [[ -n `mount | grep " / type aufs"` ]];
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then
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REMOUNT="mount -t aufs -o remount,br:/ none /"
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REMOUNTBUILDER="mount -t aufs -o remount,br:/ none $BUILDER"
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else
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REMOUNT="mount -t unionfs -o remount,dirs=/ unionfs /"
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REMOUNTBUILDER=":"
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fi
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TIMERUN=`date +%s`
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EMERGELOG=${BUILDER}/var/log/emerge.log
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TAILEMERGELOG="tail -f ${EMERGELOG}"
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#------------------------------------------------------------------------------
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# Обновление Unionfs в течение сборки пакетов
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#------------------------------------------------------------------------------
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watching() {
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$TAILEMERGELOG |
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while read line;
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do
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if [ `echo "$line" | awk -F: '{print $1;}'` -ge $TIMERUN ] &&
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[ "`echo "$line" | grep -e "unemerge success" -e "completed emerge"`" ]
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then
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$REMOUNT &>/dev/null
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fi
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done
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}
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#------------------------------------------------------------------------------
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# Монтируем ресурсы
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#------------------------------------------------------------------------------
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mountres() {
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mount -o bind /var/calculate/remote ${BUILDER}/var/calculate/remote
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mount -t proc none ${BUILDER}/proc && mount -o bind /dev ${BUILDER}/dev &&
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mount -t sysfs none ${BUILDER}/sys &&
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mount -o bind /dev/pts ${BUILDER}/dev/pts && return 0
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return 1
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}
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#------------------------------------------------------------------------------
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# Выполним emerge
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#------------------------------------------------------------------------------
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runchroot() {
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touch $EMERGELOG
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watching & 2>/dev/null
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chroot $BUILDER /bin/bash --rcfile /usr/calculate/install/config/chroot.rc
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WATCHINGPID=`ps axo pid,cmd | sed -nr "s|^\s*([0-9]+)\s+${TAILEMERGELOG}.*|\1|p"`
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[ "${WATCHINGPID}" ] && kill -9 $WATCHINGPID &>/dev/null
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$REMOUNT &>/dev/null
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}
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#------------------------------------------------------------------------------
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# Отмонтируем ресурсы
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#------------------------------------------------------------------------------
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umountres() {
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# перебираем строку в обратном порядке
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MOUNTDIRS=`mount | grep -Po "${BUILDER}/[^ ]+" | sed "{N;s/\n/ /}"`
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for MOUNTDIR in $( echo $MOUNTDIRS | rev )
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do
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umount $(echo $MOUNTDIR | rev) || exit
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done
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}
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#------------------------------------------------------------------------------
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# Выполним проверки
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#------------------------------------------------------------------------------
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checkrun() {
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if [[ `/usr/bin/id -u` -ne 0 ]]
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then
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echo "Only root can perform system building."
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exit;
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fi
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#не запустим если загрузка не в Scrach режиме
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if ! mount | grep /mnt/scratch &>/dev/null
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then
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echo "This program only works in the system, installed by Calculate with the option '--build'."
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exit;
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fi
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#не запустим второй раз
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if mount | grep "/dev/pts on /mnt/builder/dev/pts " &>/dev/null
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then
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if [ `ps ax | grep -v grep | grep -c "/bin/bash /usr/bin/cl-builder"` -gt 3 ];
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then
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echo "This program is already run."
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exit;
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else
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umountres
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fi
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fi
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#не запустим из chroot
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if [ `mount | grep -c "devpts on /dev/pts "` -ne 1 ];
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then
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echo "This program can't be run from Scratch layer."
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exit;
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fi
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}
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#------------------------------------------------------------------------------
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# Выполним предварительные настройки
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#------------------------------------------------------------------------------
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configure() {
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# Перенесем resolv.conf
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if [ -f /etc/resolv.conf ]
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then
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mkdir -p ${BUILDER}/etc
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cp /etc/resolv.conf ${BUILDER}/etc/
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fi
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}
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checkrun
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configure
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$REMOUNTBUILDER &>/dev/null
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mountres && runchroot
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umountres
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ROOTDIR=/
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UPDATE_DIRS="/boot /lib/modules /lib/firmware"
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#------------------------------------------------------------------------------
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# Ask: whether to replace the old file
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#------------------------------------------------------------------------------
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ask_replace() {
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[[ $REPLACE_ANSWER == "yes" ]] && return 0
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[[ $REPLACE_ANSWER == "no" ]] && return 1
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local destfile=$1
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echo "File '$destfile' in builder is newer than in workspace"
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local line
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while true
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do
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echo -n "Do you want replace old file (Yes/No/All/None):"
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read line <&1
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case $line in
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All|all) REPLACE_ANSWER=yes;return 0;;
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None|none) REPLACE_ANSWER=no;return 1;;
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Y*|y*) return 0 ;;
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N*|n*) return 1 ;;
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esac
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done
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}
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#------------------------------------------------------------------------------
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# Compare modify time of the first and second file
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#------------------------------------------------------------------------------
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test_newer() {
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# [[ file1 -nt file2 ]] not correct work with symbolic link, because
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# get modify time of target file
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if [[ -L $1 || -L $2 ]]
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then
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[[ `stat -c %Y $1` -gt `stat -c %Y $2` ]]
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else
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[[ $1 -nt $2 ]]
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fi
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}
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#------------------------------------------------------------------------------
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# Compare modify time, ask user for update and update file
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#------------------------------------------------------------------------------
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try_update_file() {
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[[ -e $2 || -L $2 ]] && test_newer $1 $2 &&
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ask_replace $2 && cp -P $1 $2
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}
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#------------------------------------------------------------------------------
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# Find in first directory files and symbolic links with modify time great than
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# same files in the second directory
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#------------------------------------------------------------------------------
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update_from_builder() {
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basesrc=${1%/}
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basedest=${2%/}
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shift 2
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for place in $*
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do
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src=$basesrc/${place#/}
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dest=$basedest/${place#/}
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find $src -type f -o -type l |
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while read srcfile;
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do
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dstfile=${dest}/${srcfile#${src}/}
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try_update_file $srcfile $dstfile
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done
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done
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}
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update_from_builder $BUILDER $ROOTDIR $UPDATE_DIRS
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