#!/bin/bash
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PRJ_PATH=`pwd`
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PRJ_NAME=`basename ${PRJ_PATH}`
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BOARD=igkboard
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# $SYSTEM should be buildroot, yocto or debian
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# Buildroot distro should be: buildroot-2021.02
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# Yocto distro should be : hardknott
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# Debian distro should be : buster or bullseye
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SYSTEM=buildroot
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DISTRO=v2021.02
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SYSTYPE=`echo $SYSTEM | tr 'A-Z' 'a-z'`
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if [ $SYSTYPE == "debian" ] ; then
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SYSNAME=${DISTRO}
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else
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SYSNAME=${SYSTYPE}
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fi
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ROOTFS_DIR=rootfs_${SYSNAME}
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TAR_PATH=${PRJ_PATH}/../tarball
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DRV_PATH=${PRJ_PATH}/driver
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# rootfs configuration
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ARCH=armhf
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DEF_USER=lingyun
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DEF_PASSWD=12345
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DEF_HOSTNAME=${BOARD}
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APT_CONF=extra_apps.json
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PATCH_PATH=${PRJ_PATH}/files
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set -u
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set -e
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trap 'exit_handler' EXIT
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function exit_handler()
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{
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rm -f ${ROOTFS_DIR}/usr/bin/qemu-arm-static
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umount ${ROOTFS_DIR}/{sys,proc,dev/pts,dev} 2>/dev/null || true
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}
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STAGE=0
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function msg_banner()
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{
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STAGE=`expr $STAGE + 1`
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echo ""
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echo "+---------------------------------------------+"
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printf " Stage $STAGE: $1\n"
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echo "+---------------------------------------------+"
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echo ""
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}
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function do_unpack()
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{
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if [ -d ${ROOTFS_DIR} ] ; then
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printf "\n\n -- ${ROOTFS_DIR} fetched already, skip it -- \n\n"
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return;
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fi
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if [ -s ${TAR_PATH}/${ROOTFS_DIR}.tar.bz2 ] ; then
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printf "\n\n -- decompress ${ROOTFS_DIR}.tar.bz2 -- \n\n"
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mkdir -p ${ROOTFS_DIR}
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tar -xjf ${TAR_PATH}/${ROOTFS_DIR}.tar.bz2 -C ${ROOTFS_DIR}
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fi
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return;
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}
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# debootstrap fetch debian rootfs
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function do_fetch()
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{
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msg_banner " ${ROOTFS_DIR} do fetch "
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# try to decompress packet first.
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do_unpack
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if [ -d ${ROOTFS_DIR} ] ; then
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return ;
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else
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if [ $SYSTYPE != "debian" ] ; then
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echo " ERROR: miss ${SYSTEM}(${DISTRO}) rootfs, exit now. "
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echo ""
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exit;
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fi
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fi
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export DEBIAN_FRONTEND=noninteractive
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export DEBCONF_NONINTERACTIVE_SEEN=true
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export LC_ALL=C
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export LANGUAGE=C
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export LANG=C
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printf "\n\n -- debootstrap fetch start --\n\n"
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debootstrap --arch=${ARCH} --foreign ${DISTRO} ${ROOTFS_DIR} http://ftp.cn.debian.org/debian/
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chroot ${ROOTFS_DIR} debootstrap/debootstrap --second-stage
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printf "\n\n -- debootstrap config start --\n\n"
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chroot ${ROOTFS_DIR} dpkg --configure -a
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printf "\n\n -- debootstrap fetch done -- \n\n"
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# Clear the MD5 value to install extra apps
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sed -i -e "s|.*md5val.*|\t\"md5val\":\"MD5_Auto_Generate_Here\"|g" $APT_CONF
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}
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# Install extra apps defined in extra_apps.conf
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function do_apt()
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{
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export DEBIAN_FRONTEND=noninteractive
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export DEBCONF_NONINTERACTIVE_SEEN=true
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export LC_ALL=C
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export LANGUAGE=C
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export LANG=C
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msg_banner " debootstrap apt install "
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if [ -f $APT_CONF ] ; then
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extra_apps=$(eval jq -r .extra_apps[] $APT_CONF )
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md5_file=$(eval jq -r .md5val extra_apps.json)
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md5_calc=$(eval echo $extra_apps | md5sum | awk '{print $1}')
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if [ $md5_file == $md5_calc ] ; then
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printf "\n\n -- debootstrap apt install already, skip it! --\n\n"
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else
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printf "\n\n -- debootstrap apt install start --\n\n"
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cp -f /usr/bin/qemu-arm-static ${ROOTFS_DIR}/usr/bin/
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mount -o bind /proc ${ROOTFS_DIR}/proc
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mount -o bind /dev ${ROOTFS_DIR}/dev
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mount -o bind /dev/pts ${ROOTFS_DIR}/dev/pts
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mount -o bind /sys ${ROOTFS_DIR}/sys
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chroot ${ROOTFS_DIR} apt update
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chroot ${ROOTFS_DIR} apt install -y ${extra_apps}
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umount ${ROOTFS_DIR}/{sys,proc,dev/pts,dev}
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sed -i -e "s|.*md5val.*|\t\"md5val\":\"$md5_calc\"|g" $APT_CONF
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printf "\n\n -- debootstrap apt install done --\n\n"
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# modify root password
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chroot ${ROOTFS_DIR} sh -c "echo root:${DEF_PASSWD} | chpasswd"
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# add extra user account
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set +e
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grep "$DEF_USER" ${ROOTFS_DIR}/etc/passwd > /dev/null 2>&1
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if [ $? != 0 ] ; then
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printf "\n\n -- setup default user account --\n\n"
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chroot ${ROOTFS_DIR} sh -c "useradd -m -s /bin/bash ${DEF_USER}"
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chroot ${ROOTFS_DIR} sh -c "echo ${DEF_USER}:${DEF_PASSWD} | chpasswd"
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chroot ${ROOTFS_DIR} sh -c "usermod -G video,audio,sudo avnet"
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echo "${DEF_USER} ALL=(ALL:ALL) NOPASSWD:ALL" >> ${ROOTFS_DIR}/etc/sudoers
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fi
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set -e
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fi
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fi
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}
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function do_modules()
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{
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msg_banner " install linux firmware"
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if [ -s ${TAR_PATH}/firmware.tar.bz2 ] ; then
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tar -xjf ${TAR_PATH}/firmware.tar.bz2 -C ${ROOTFS_DIR}/lib/
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fi
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if [ ! -d ${DRV_PATH}/lib/ ] ; then
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return ;
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fi
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if [ -d ${DRV_PATH}/lib/modules ] ; then
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msg_banner " install kernel modules"
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rm -rf ${ROOTFS_DIR}/lib/modules/
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cp -af ${DRV_PATH}/lib/modules ${ROOTFS_DIR}/lib/
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fi
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}
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function do_common()
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{
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if [ -s ${PATCH_PATH}/expand_rootfs ] ; then
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cp ${PATCH_PATH}/expand_rootfs ${ROOTFS_DIR}/usr/sbin/
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chmod a+x ${ROOTFS_DIR}/usr/sbin/expand_rootfs
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fi
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}
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function do_buildroot()
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{
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if [ $SYSTYPE != "buildroot" ] ; then
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return ;
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fi
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# add vim alias for vim
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grep "alias vim=" ${ROOTFS_DIR}/etc/profile > /dev/null 2>&1
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if [ $? != 0 ] ; then
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echo "alias vim='vi'" >> ${ROOTFS_DIR}/etc/profile
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fi
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if [ -s ${PATCH_PATH}/S30WpaSupplicant ] ; then
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cp ${PATCH_PATH}/S30WpaSupplicant ${ROOTFS_DIR}/etc/init.d/
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chmod a+x ${ROOTFS_DIR}/etc/init.d/S30WpaSupplicant
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fi
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if [ -s ${PATCH_PATH}/wpa_supplicant.conf ] ; then
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cp ${PATCH_PATH}/wpa_supplicant.conf ${ROOTFS_DIR}/etc/
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fi
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printf "\n\n -- modify buildroot rootfs done --\n\n"
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}
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function do_modify()
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{
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msg_banner " modify rootfs environment"
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set +e
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# modify for buildroot rootfs
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do_buildroot
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# modify for all rootfs
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do_common
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# update hostnmae and issue
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echo "Welcome to LingYun IoT Gateway Kit Board GNU/Linux ${SYSTEM}(${DISTRO}) system, default password '$DEF_PASSWD'." > ${ROOTFS_DIR}/etc/issue
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echo $DEF_HOSTNAME > ${ROOTFS_DIR}/etc/hostname
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grep "$BOARD" ${ROOTFS_DIR}/etc/hosts > /dev/null 2>&1
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if [ $? != 0 ] ; then
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echo "127.0.0.1 ${BOARD}" >> ${ROOTFS_DIR}/etc/hosts
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fi
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# update dns server
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echo "nameserver 114.114.114.114" > ${ROOTFS_DIR}/etc/resolv.conf
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echo "nameserver 223.5.5.5" >> ${ROOTFS_DIR}/etc/resolv.conf
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# update profile
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sed -i "s|PS1='# '|PS1='\\\u@\\\h:\\\w# '|g" ${ROOTFS_DIR}/etc/profile
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sed -i "s|PS1='$ '|PS1='\\\u@\\\h:\\\w$ '|g" ${ROOTFS_DIR}/etc/profile
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# add ls alias for display with color
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grep "^alias ls=" ${ROOTFS_DIR}/etc/profile > /dev/null 2>&1
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if [ $? != 0 ] ; then
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echo "alias ls='ls --color=auto'" >> ${ROOTFS_DIR}/etc/profile
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fi
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# permit root ssh login
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sed -i "s|^#PermitRootLogin.*|PermitRootLogin yes|g" ${ROOTFS_DIR}/etc/ssh/sshd_config
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sed -i "s|^#PasswordAuthentication.*|PasswordAuthentication yes|g" ${ROOTFS_DIR}/etc/ssh/sshd_config
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set -e
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printf "\n\n -- modify rootfs done --\n\n"
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}
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function do_pack()
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{
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if [ -f ${ROOTFS_DIR}.tar.bz2 ] ; then
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msg_banner " rootfs already generate, skip it"
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return ;
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else
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msg_banner " generate rootfs packet "
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fi
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cd ${ROOTFS_DIR}
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tar -cjf ../${ROOTFS_DIR}.tar.bz2 *
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cd ${PRJ_PATH}
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printf "\n\n -- generate rootfs packet done --\n\n"
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}
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function do_distclean()
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{
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printf "\n\n -- do distclean in $PRJ_NAME --\n\n"
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rm -rf driver
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rm -rf $ROOTFS_DIR
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exit;
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}
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function do_rootfs()
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{
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do_fetch
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echo "do rootfs continue "
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# debian rootfs need apt install packet
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if [ $SYSTYPE == "debian" ] ;then
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do_apt
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fi
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do_modules
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do_modify
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do_pack
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}
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function do_root()
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{
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echo ""
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if [[ $1 == "yes" ]] && [ `id -u` != 0 ] ; then
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echo "ERROR: This action must run as root!"
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echo ""
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exit;
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elif [[ $1 != "yes" ]] && [ `id -u` == 0 ] ; then
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echo "ERROR: This action cannot run as root!"
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echo ""
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exit;
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fi
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}
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function do_usage()
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{
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echo ""
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echo "Usage:"
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echo " $0 [-b] [-c] [-h]"
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echo " -b: download and build $PRJ_NAME"
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echo " -c: clean all the source code"
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echo " -h: show this help message"
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echo ""
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echo " WARNNING: This shell script must run as sudo"
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echo ""
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exit;
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}
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while getopts "bch" OPTNAME
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do
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case "${OPTNAME}" in
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"b")
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break;
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;;
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"c")
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do_root "yes"
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do_distclean
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;;
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"*")
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do_usage
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;;
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esac
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done
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do_root "yes"
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do_rootfs
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