Initial commit

init

+#!/bin/sh
+
+cmdline() {
+    local value
+    value=" $(cat /proc/cmdline) "
+    value="${value##* $1=}"
+    value="${value%% *}"
+    [ "$value" != "" ] && echo "$value"
+}
+
+devicename() {
+    blk=$1
+    devices="$(lsblk -alno NAME,LABEL)"
+    while read -r line; do
+	device=(${line//:/ })
+	if [ "/dev/disk/by-label/${device[1]}" == "$1" ]; then
+	    blk="/dev/${device[0]}"
+	    break
+	fi
+    done <<< "$devices"
+    echo $blk
+}
+
+rootdevice() {
+    local value
+    value="$(lsblk -no pkname $1)"
+    [ "$value" != "" ] && echo "/dev/$value"
+}
+
+freespaceafter() {
+    local escaped
+    local start
+    escaped="$(echo ""$2"" | sed 's|/|\\/|g')"
+    start="$(sfdisk -d $1 | sed -n "/$escaped/p" | sed -r 's/.*start=\s*([0-9]+),.*/\1/g')"
+    sfdisk -q -F $1 | sed -n '/^\s*[0-9]/p' | sed -r 's/^\s*([0-9]+)\s.*/\1/g' | while read freespace
+    do
+	if [ $freespace -gt $start ]; then
+	    echo "available"
+	    break
+	fi
+    done
+}
+
+maximize() {
+    local escaped
+    escaped="$(echo ""$2"" | sed 's|/|\\/|g')"
+    sfdisk -d $1 | sed "/$escaped/ s/,\ssize=.*//g" | sfdisk $1 > /dev/null 2> /dev/null
+    fsck.ext4 -f -y $2 > /dev/null 2> /dev/null
+    resize2fs $2 > /dev/null 2> /dev/null
+}
+
+mount -t devtmpfs devtmpfs /dev
+mount -t proc proc /proc
+mount -t sysfs sysfs /sys
+mount -t tmpfs tmpfs /run
+
+root=$(cmdline root)
+
+if [ -z $root ]; then
+    echo "No valid root= is provided on kernel command line"
+else
+    while [ ! -e $root ]; do
+	sleep 1
+	root=$(devicename $root)
+    done
+    rootfs=$(findfs $root)
+    if [ -b $rootfs ]; then
+	mount -o ro $rootfs /mnt/root
+
+	data=$(findmnt -s -no source /data)
+	if [ ! -z $data ]; then
+	    while [ ! -e $data ]; do
+		sleep 1
+		data=$(devicename $data)
+	    done
+	    datafs=$(findfs $data)
+	    if [ -b $datafs ]; then
+		rootdevice=$(rootdevice $datafs)
+		freespace=$(freespaceafter $rootdevice $datafs)
+		if [ "$freespace" = "available" ]; then
+		    echo "Resizing data partition $datafs"
+		    umount /mnt/root
+		    maximize $rootdevice $datafs
+		    mount -o ro $rootfs /mnt/root
+		fi
+
+		mount $datafs /data
+
+		if [ -f /data/.factorydefault ]; then
+		    echo "Resetting data partition to factory default"
+		    umount /data
+		    cat /mnt/root/usr/share/factorydefault/data.xz | unxz > $datafs
+		    fsck.ext4 -f -y $datafs > /dev/null 2> /dev/null
+		    resize2fs $datafs > /dev/null 2> /dev/null
+		    mount $datafs /data
+		fi
+
+		mount --move /dev /mnt/root/dev
+		mount --move /proc /mnt/root/proc
+		mount --move /sys /mnt/root/sys
+		mount --move /run /mnt/root/run
+		mount --move /data /mnt/root/data
+
+		exec switch_root /mnt/root /sbin/init
+	    else
+		echo "Cannot find file system for data partition $data"
+	    fi
+	else
+	    echo "Cannot find /data partition in /etc/fstab"
+	fi
+    else
+	echo "Cannot find file system for root $root"
+    fi
+fi

initramfs.list

+dir /dev 755 0 0
+nod /dev/console 644 0 0 c 5 1
+dir /proc 755 0 0
+dir /sys 755 0 0
+dir /run 755 0 0
+dir /mnt 755 0 0
+dir /mnt/root 755 0 0
+dir /data 755 0 0
+dir /etc 755 0 0
+slink /etc/mtab /proc/self/mounts 777 0 0
+slink /etc/fstab /mnt/root/etc/fstab 777 0 0
+dir /lib 755 0 0
+file /lib/libreadline.so.7.0 /lib/libreadline.so.7.0 555 0 0
+slink /lib/libreadline.so.7 libreadline.so.7.0 777 0 0
+file /lib/libhistory.so.7.0 /lib/libhistory.so.7.0 555 0 0
+slink /lib/libhistory.so.7 libhistory.so.7.0 777 0 0
+file /lib/libncursesw.so.6.1 /lib/libncursesw.so.6.1 755 0 0
+slink /lib/libncursesw.so.6 libncursesw.so.6.1 777 0 0
+file /lib/libdl-2.27.so /lib/libdl-2.27.so 755 0 0
+slink /lib/libdl.so.2 libdl-2.27.so 777 0 0
+file /lib/libc-2.27.so /lib/libc-2.27.so 755 0 0
+slink /lib/libc.so.6 libc-2.27.so 777 0 0
+file /lib/ld-2.27.so /lib/ld-2.27.so 755 0 0
+slink /lib/ld-linux-armhf.so.3 ld-2.27.so 777 0 0
+slink /lib/ld-linux-aarch64.so.1 ld-2.27.so 777 0 0
+slink /lib/ld-linux-x86-64.so.2 ld-2.27.so 777 0 0
+file /lib/libmount.so.1.1.0 /lib/libmount.so.1.1.0 755 0 0
+slink /lib/libmount.so.1 libmount.so.1.1.0 777 0 0
+file /lib/libblkid.so.1.1.0 /lib/libblkid.so.1.1.0 755 0 0
+slink /lib/libblkid.so.1 libblkid.so.1.1.0 777 0 0
+file /lib/libuuid.so.1.3.0 /lib/libuuid.so.1.3.0 755 0 0
+slink /lib/libuuid.so.1 libuuid.so.1.3.0 777 0 0
+file /lib/librt-2.27.so /lib/librt-2.27.so 755 0 0
+slink /lib/librt.so.1 librt-2.27.so 777 0 0
+file /lib/libpthread-2.27.so /lib/libpthread-2.27.so 755 0 0
+slink /lib/libpthread.so.0 libpthread-2.27.so 777 0 0
+file /lib/libsmartcols.so.1.1.0 /lib/libsmartcols.so.1.1.0 755 0 0
+slink /lib/libsmartcols.so.1 libsmartcols.so.1.1.0 777 0 0
+file /lib/libacl.so.1.1.0 /lib/libacl.so.1.1.0 755 0 0
+slink /lib/libacl.so.1 libacl.so.1.1.0 777 0 0
+file /lib/libattr.so.1.1.0 /lib/libattr.so.1.1.0 755 0 0
+slink /lib/libattr.so.1 libattr.so.1.1.0 777 0 0
+file /lib/libfdisk.so.1.1.0 /lib/libfdisk.so.1.1.0 755 0 0
+slink /lib/libfdisk.so.1 libfdisk.so.1.1.0 777 0 0
+file /lib/libext2fs.so.2.4 /lib/libext2fs.so.2.4 755 0 0
+slink /lib/libext2fs.so.2 libext2fs.so.2.4 777 0 0
+file /lib/libcom_err.so.2.1 /lib/libcom_err.so.2.1 755 0 0
+slink /lib/libcom_err.so.2 libcom_err.so.2.1 777 0 0
+file /lib/libe2p.so.2.3 /lib/libe2p.so.2.3 755 0 0
+slink /lib/libe2p.so.2 libe2p.so.2.3 777 0 0
+file /lib/liblzma.so.5.2.4 /lib/liblzma.so.5.2.4 755 0 0
+slink /lib/liblzma.so.5 liblzma.so.5.2.4 777 0 0
+dir /bin 755 0 0
+file /bin/bash /bin/bash 755 0 0
+slink /bin/sh bash 777 0 0
+file /bin/cat /bin/cat 755 0 0
+file /bin/[ /bin/[ 755 0 0
+file /bin/echo /bin/echo 755 0 0
+file /bin/mount /bin/mount 755 0 0
+file /bin/umount /bin/umount 755 0 0
+file /bin/sleep /bin/sleep 755 0 0
+file /bin/findfs /sbin/findfs 755 0 0
+file /bin/findmnt /bin/findmnt 755 0 0
+file /bin/switch_root /sbin/switch_root 755 0 0
+file /bin/lsblk /bin/lsblk 755 0 0
+file /bin/sed /bin/sed 755 0 0
+file /bin/sfdisk /sbin/sfdisk 755 0 0
+file /bin/fsck.ext4 /sbin/fsck.ext4 755 0 0
+file /bin/resize2fs /sbin/resize2fs 755 0 0
+file /bin/unxz /bin/unxz 755 0 0
+file /init /init 755 0 0

prepare

+#!/bin/sh
+
+mkdir -p /kernelconfig/initramfs/lib
+mkdir -p /kernelconfig/initramfs/bin
+mkdir -p /kernelconfig/initramfs/sbin
+
+grep "^file /lib" /kernelconfig/initramfs/initramfs.list | awk '{print $3" -o /kernelconfig/initramfs"$3}' | xargs -n3 strip --strip-debug
+grep "^file /bin" /kernelconfig/initramfs/initramfs.list | awk '{print $3" -o /kernelconfig/initramfs"$3}' | xargs -n3 strip --strip-all
+
+sed '/^file/ s/^file [^[:space:]]\{1,\} /&\/kernelconfig\/initramfs/' /kernelconfig/initramfs/initramfs.list > /kernelconfig/initramfs/initramfs_list