birbnetes/raspi-alpine-builder
birbnetes/raspi-alpine-builder
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read only root fs

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This commit is contained in:
Benjamin Böhmke 2019-11-03 19:17:48 +01:00
parent f59261bb70
commit 1295fc080b
1 changed files with 47 additions and 30 deletions
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77
resources/build.sh
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@ -115,7 +115,7 @@ auto eth0
iface eth0 inet dhcp
EOF
# networking should not wait for local -> local brings up the interface
# run local before network -> local brings up the interface
sed -i '/^\tneed/ s/$/ local/' ${ROOTFS_PATH}/etc/init.d/networking
# bring up eth0 on startup
@ -125,19 +125,13 @@ ifconfig eth0 up
EOF
chmod +x ${ROOTFS_PATH}/etc/local.d/11-up_eth0.start
# make root file system writeable
cat >${ROOTFS_PATH}/etc/local.d/10-remount_root.start <<EOF
#!/bin/sh
mount -o remount,rw /
EOF
chmod +x ${ROOTFS_PATH}/etc/local.d/10-remount_root.start
# add script to resize data partition
cp ${RES_PATH}/resizedata.sh ${ROOTFS_PATH}/etc/local.d/90-resizedata.start
chmod +x ${ROOTFS_PATH}/etc/local.d/90-resizedata.start
# mount data and boot partition (root is already mounted)
cat >${ROOTFS_PATH}/etc/fstab <<EOF
none / ext4 defaults,ro 0 1
/dev/mmcblk0p1 /uboot vfat defaults,ro 0 2
/dev/mmcblk0p4 /data ext4 defaults 0 1
@ -147,31 +141,22 @@ devpts /dev/pts devpts gid=4,mode=620 0 0
tmpfs /dev/shm tmpfs defaults 0 0
tmpfs /tmp tmpfs defaults 0 0
tmpfs /run tmpfs defaults 0 0
tmpfs /var/lock tmpfs defaults 0 0
EOF
# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
echo ">> Move persistent data to /data"
# prepare /data
cat >${ROOTFS_PATH}/etc/local.d/20-data_prepare.start <<EOF
#!/bin/sh
mkdir -p /data/root/
mkdir -p /data/dropbear/
if [ ! -f /data/dropbear/dropbear.conf ]; then
cp /etc/conf.d/dropbear_org /data/dropbear/dropbear.conf
fi
EOF
chmod +x ${ROOTFS_PATH}/etc/local.d/20-data_prepare.start
# link root dir
rmdir ${ROOTFS_PATH}/root
ln -s /data/root ${ROOTFS_PATH}/root
# prepare mount points
mkdir -p ${ROOTFS_PATH}/uboot
mkdir -p ${ROOTFS_PATH}/data
mkdir -p ${ROOTFS_PATH}/proc
mkdir -p ${ROOTFS_PATH}/sys
mkdir -p ${ROOTFS_PATH}/tmp
mkdir -p ${ROOTFS_PATH}/run
mkdir -p ${ROOTFS_PATH}/dev/pts
mkdir -p ${ROOTFS_PATH}/dev/shm
mkdir -p ${ROOTFS_PATH}/var/lock
# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
# uboot tools config
cat >${ROOTFS_PATH}/etc/fw_env.config <<EOF
/uboot/uboot.env 0x0000 0x4000
@ -204,9 +189,41 @@ mv ${ROOTFS_PATH}/etc/conf.d/dropbear ${ROOTFS_PATH}/etc/conf.d/dropbear_org
ln -s /data/dropbear/dropbear.conf ${ROOTFS_PATH}/etc/conf.d/dropbear
# cleanup
rm -rf ${ROOTFS_PATH}/var/cache/apk/*
# TODO /etc/motd
# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
echo ">> Move persistent data to /data"
# prepare /data
cat >${ROOTFS_PATH}/etc/local.d/20-data_prepare.start <<EOF
#!/bin/sh
touch /data/resolv.conf
mkdir -p /data/root/
mkdir -p /data/dropbear/
if [ ! -f /data/dropbear/dropbear.conf ]; then
cp /etc/conf.d/dropbear_org /data/dropbear/dropbear.conf
fi
EOF
chmod +x ${ROOTFS_PATH}/etc/local.d/20-data_prepare.start
# link root dir
rmdir ${ROOTFS_PATH}/root
ln -s /data/root ${ROOTFS_PATH}/root
# resolv.conf & udhcpc
mkdir -p ${ROOTFS_PATH}/etc/udhcpc
cat >${ROOTFS_PATH}/etc/udhcpc/udhcpc.conf <<EOF
RESOLV_CONF=/data/resolv.conf
EOF
rm ${ROOTFS_PATH}/etc/resolv.conf
ln -s /data/resolv.conf ${ROOTFS_PATH}/etc/resolv.conf
# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
echo ">> Prepare kernel for uboot"
@ -286,7 +303,7 @@ enable_uart=1
EOF
cat >${BOOTFS_PATH}/cmdline.txt <<EOF
console=serial0,115200 console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4 fsck.repair=yes rw rootwait quiet
console=serial0,115200 console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4 fsck.repair=yes ro rootwait quiet
EOF
# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #