444 lines
9.3 KiB
Bash
Executable File
444 lines
9.3 KiB
Bash
Executable File
#!/bin/bash -e
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export IMG_NAME='BarnacleOS'
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export HOSTNAME='barnacleos'
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export USERNAME='user'
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export PASSWORD='password'
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export BASE_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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export DEPLOY_DIR="$BASE_DIR/deploy"
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export ROOTFS_DIR="$BASE_DIR/rootfs"
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export MOUNT_DIR="$BASE_DIR/mnt"
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export IMG_DATE="$(date +%Y-%m-%d)"
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export IMG_FILE="$DEPLOY_DIR/$IMG_DATE-${IMG_NAME}.img"
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export ZIP_FILE="$DEPLOY_DIR/$IMG_DATE-${IMG_NAME}.zip"
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export QUILT_NO_DIFF_INDEX=1
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export QUILT_NO_DIFF_TIMESTAMPS=1
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export QUILT_REFRESH_ARGS='-p ab'
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# dependencies_check
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# $@ Dependnecy files to check
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#
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# Each dependency is in the form of a tool to test for, optionally followed by
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# a : and the name of a package if the package on a Debian-ish system is not
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# named for the tool (i.e., qemu-user-static).
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dependencies_check() {
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local missing
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if [[ -f "$1" ]]; then
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for dep in $(cat "$1"); do
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if ! hash ${dep%:*} 2>/dev/null; then
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missing="${missing:+$missing }${dep#*:}"
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fi
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done
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fi
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if [[ "$missing" ]]; then
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tput setaf 1 # Red color
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echo 'Reqired dependencies not installed.'
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echo 'This can be resolved on Debian/Raspbian systems by installing the following packages:'
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for package_name in $missing; do
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echo " * $package_name"
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done
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tput sgr0 # No color
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false
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fi
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}
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on_chroot() {
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capsh --drop=cap_setfcap "--chroot=$ROOTFS_DIR/" -- "$@"
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}
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apply_patches() {
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pushd "$ROOTFS_DIR" > /dev/null
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export QUILT_PATCHES="$BASE_DIR/patches"
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quilt upgrade
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RC=0
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quilt push "$1" || RC=$?
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case "$RC" in
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0|2)
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;;
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*)
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false
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;;
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esac
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popd > /dev/null
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}
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unmount() {
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if [ -z "$1" ]; then
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local DIR=$PWD
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else
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local DIR=$1
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fi
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while mount | grep -q "$DIR"; do
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local LOCS=$(mount | grep "$DIR" | cut -f 3 -d ' ' | sort -r)
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for loc in $LOCS; do
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umount "$loc"
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done
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done
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}
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unmount_image() {
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sync
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sleep 1
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local LOOP_DEVICES=$(losetup -j "$1" | cut -f1 -d ':')
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for LOOP_DEV in $LOOP_DEVICES; do
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if [ -n "$LOOP_DEV" ]; then
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local MOUNTED_DIR=$(mount | grep "$(basename "$LOOP_DEV")" | head -n 1 | cut -f 3 -d ' ')
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if [ -n "$MOUNTED_DIR" ] && [ "$MOUNTED_DIR" != "/" ]; then
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unmount "$(dirname "$MOUNTED_DIR")"
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fi
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sleep 1
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losetup -d "$LOOP_DEV"
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fi
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done
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}
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##
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# Prepare environment.
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#
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if [ "$(id -u)" != '0' ]; then
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echo 'Please run as root' 1>&2
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exit 1
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fi
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dependencies_check "$BASE_DIR/depends"
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mkdir -p "$DEPLOY_DIR"
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mkdir -p "$MOUNT_DIR"
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cd "$BASE_DIR"
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##
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# Bootstrap a basic Debian system.
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#
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if [ ! -d "$ROOTFS_DIR" ]; then
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ARCH="$(dpkg --print-architecture)"
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if [ "$ARCH" != 'armhf' ]; then
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BOOTSTRAP_CMD='qemu-debootstrap'
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else
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BOOTSTRAP_CMD='debootstrap'
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fi
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capsh --drop=cap_setfcap -- -c "$BOOTSTRAP_CMD \
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--components=main,contrib,non-free \
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--arch armhf \
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--keyring ./files/raspberrypi.gpg \
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jessie \
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$ROOTFS_DIR \
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http://mirrordirector.raspbian.org/raspbian/" || rmdir "$ROOTFS_DIR/debootstrap"
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fi
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##
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# Prepare for Quilt patching.
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#
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rm -rf "$ROOTFS_DIR/.pc"
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mkdir "$ROOTFS_DIR/.pc"
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##
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# Prevent services to start after package installation in chroot environment.
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#
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install -m 744 files/policy-rc.d "$ROOTFS_DIR/usr/sbin/policy-rc.d"
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##
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# Mount virtual file systems.
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#
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mount --bind /dev "$ROOTFS_DIR/dev"
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mount --bind /dev/pts "$ROOTFS_DIR/dev/pts"
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mount -t proc /proc "$ROOTFS_DIR/proc"
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mount --bind /sys "$ROOTFS_DIR/sys"
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##
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# Add /etc/fstab and /etc/mtab
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#
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install -m 644 files/fstab "$ROOTFS_DIR/etc/fstab"
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ln -nsf /proc/mounts "$ROOTFS_DIR/etc/mtab"
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##
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# Prepare package manager.
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#
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install -m 644 files/sources.list "$ROOTFS_DIR/etc/apt/"
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on_chroot apt-key add - < files/raspberrypi.gpg.key
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install -m 644 files/raspberrypi-kernel-and-bootloader "$ROOTFS_DIR/etc/apt/preferences.d/"
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install -m 644 files/50raspi "$ROOTFS_DIR/etc/apt/apt.conf.d/"
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on_chroot << EOF
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apt-get update
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apt-get dist-upgrade -y
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EOF
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##
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# Prepare Raspberry Pi boot partition.
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#
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mkdir -p "$ROOTFS_DIR/boot/"
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install -m 644 files/cmdline.txt "$ROOTFS_DIR/boot/"
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install -m 644 files/config.txt "$ROOTFS_DIR/boot/"
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##
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# This script is executed at the end of each multiuser runlevel.
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#
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install -m 755 files/rc.local "$ROOTFS_DIR/etc/rc.local"
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##
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# Install SSH server
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#
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on_chroot << EOF
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apt-get install -y ssh
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EOF
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apply_patches '01-no-root-login.diff'
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##
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# Install typical Raspberry Pi packages which role is unknown.
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# Maybe some can be safely removed.
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#
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on_chroot << EOF
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apt-get install -y \
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raspberrypi-kernel \
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raspberrypi-kernel-headers \
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raspberrypi-bootloader \
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libraspberrypi-bin \
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libraspberrypi0 \
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libraspberrypi-dev \
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libraspberrypi-doc \
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raspberrypi-sys-mods \
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raspi-copies-and-fills
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EOF
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##
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# Configure network.
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#
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apply_patches '02-persistant-net.diff'
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on_chroot << EOF
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dpkg-divert --add --local /lib/udev/rules.d/75-persistent-net-generator.rules
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EOF
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install -m 644 files/resolv.conf "$ROOTFS_DIR/etc/"
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install -m 644 files/interfaces "$ROOTFS_DIR/etc/network/interfaces"
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install -m 644 files/ipv6.conf "$ROOTFS_DIR/etc/modprobe.d/ipv6.conf"
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echo $HOSTNAME > "$ROOTFS_DIR/etc/hostname"
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chmod 644 "$ROOTFS_DIR/etc/hostname"
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echo "127.0.1.1 $HOSTNAME" >>"$ROOTFS_DIR/etc/hosts"
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##
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# Add user.
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#
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apply_patches '03-bashrc.diff'
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apply_patches '04-useradd.diff'
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on_chroot << EOF
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if ! id -u $USERNAME >/dev/null 2>&1; then
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adduser --disabled-password --gecos "" $USERNAME
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fi
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echo "$USERNAME:$PASSWORD" | chpasswd
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passwd -d root
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adduser $USERNAME sudo
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EOF
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##
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# Configure time zone.
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#
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on_chroot << EOF
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debconf-set-selections <<SELEOF
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tzdata tzdata/Areas select Etc
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tzdata tzdata/Zones/Etc select UTC
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SELEOF
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apt-get install -y tzdata
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EOF
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##
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# Install additional packages which maybe can be removed safely.
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#
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on_chroot << EOF
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apt-get install -y \
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less \
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sudo \
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psmisc \
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module-init-tools \
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ed \
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ncdu \
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crda \
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debconf-utils \
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parted \
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unzip \
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bash-completion \
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ca-certificates \
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curl \
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ntp \
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usbutils \
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libfreetype6-dev \
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dosfstools \
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dphys-swapfile \
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usb-modeswitch
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EOF
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##
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# Enable swap.
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#
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on_chroot << EOF
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apt-get install -y dphys-swapfile
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EOF
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apply_patches '05-swap.diff'
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##
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# Configure environment.
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#
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apply_patches '06-path.diff'
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##
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# Wi-Fi firmware and tools.
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#
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on_chroot << EOF
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apt-get install -y wpasupplicant wireless-tools
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EOF
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##
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# DHCP client.
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#
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on_chroot << EOF
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apt-get install -y dhcpcd5
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EOF
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##
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# Save fake hardware clock time for more realistic time after startup.
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#
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on_chroot << EOF
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apt-get install -y fake-hwclock
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systemctl disable hwclock.sh
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fake-hwclock save
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EOF
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##
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# Unmount virtual file systems.
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#
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umount "$ROOTFS_DIR/sys"
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umount "$ROOTFS_DIR/proc"
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umount "$ROOTFS_DIR/dev/pts"
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umount "$ROOTFS_DIR/dev"
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##
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# Cleanup after Quilt patching.
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#
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rm -rf "$ROOTFS_DIR/.pc"
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##
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# Allow services to start.
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#
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rm -f "$ROOTFS_DIR/usr/sbin/policy-rc.d"
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##
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# Prepare image file systems.
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#
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rm -f "$IMG_FILE"
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BOOT_SIZE=$(du --apparent-size -s "$ROOTFS_DIR/boot" --block-size=1 | cut -f 1)
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TOTAL_SIZE=$(du --apparent-size -s "$ROOTFS_DIR" --exclude var/cache/apt/archives --block-size=1 | cut -f 1)
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IMG_SIZE=$((BOOT_SIZE + TOTAL_SIZE + (800 * 1024 * 1024)))
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truncate -s $IMG_SIZE "$IMG_FILE"
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fdisk -H 255 -S 63 "$IMG_FILE" <<EOF
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o
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n
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8192
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+$((BOOT_SIZE * 2 / 512))
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p
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t
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c
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n
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8192
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p
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w
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EOF
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PARTED_OUT=$(parted -s "$IMG_FILE" unit b print)
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BOOT_OFFSET=$(echo "$PARTED_OUT" | grep -e '^ 1' | xargs echo -n \
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| cut -d" " -f 2 | tr -d B)
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BOOT_LENGTH=$(echo "$PARTED_OUT" | grep -e '^ 1' | xargs echo -n \
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| cut -d" " -f 4 | tr -d B)
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ROOT_OFFSET=$(echo "$PARTED_OUT" | grep -e '^ 2' | xargs echo -n \
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| cut -d" " -f 2 | tr -d B)
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ROOT_LENGTH=$(echo "$PARTED_OUT" | grep -e '^ 2' | xargs echo -n \
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| cut -d" " -f 4 | tr -d B)
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BOOT_DEV=$(losetup --show -f -o $BOOT_OFFSET --sizelimit $BOOT_LENGTH "$IMG_FILE")
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ROOT_DEV=$(losetup --show -f -o $ROOT_OFFSET --sizelimit $ROOT_LENGTH "$IMG_FILE")
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mkdosfs -n boot -F 32 -v $BOOT_DEV > /dev/null
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mkfs.ext4 -O ^huge_file $ROOT_DEV > /dev/null
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##
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# Mount image file systems.
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#
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mkdir -p "$MOUNT_DIR"
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mount -v $ROOT_DEV "$MOUNT_DIR" -t ext4
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mkdir -p "$MOUNT_DIR/boot"
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mount -v $BOOT_DEV "$MOUNT_DIR/boot" -t vfat
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##
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# Copy root file system to image file systems.
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#
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rsync -aHAXx --exclude var/cache/apt/archives "$ROOTFS_DIR/" "$MOUNT_DIR/"
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##
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# Store file system UUIDs to configuration files.
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#
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IMGID="$(fdisk -l "$IMG_FILE" | sed -n 's/Disk identifier: 0x\([^ ]*\)/\1/p')"
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BOOT_PARTUUID="$IMGID-01"
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ROOT_PARTUUID="$IMGID-02"
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sed -i "s/BOOTDEV/PARTUUID=$BOOT_PARTUUID/" "$MOUNT_DIR/etc/fstab"
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sed -i "s/ROOTDEV/PARTUUID=$ROOT_PARTUUID/" "$MOUNT_DIR/etc/fstab"
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sed -i "s/ROOTDEV/PARTUUID=$ROOT_PARTUUID/" "$MOUNT_DIR/boot/cmdline.txt"
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##
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# Unmount all file systems and minimize image file for distribution.
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#
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ROOT_DEV=$(mount | grep "$MOUNT_DIR " | cut -f1 -d ' ')
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umount "$MOUNT_DIR/boot"
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umount "$MOUNT_DIR"
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zerofree -v "$ROOT_DEV"
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unmount_image "$IMG_FILE"
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##
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# Create zip archive with image file for distribution.
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#
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rm -f "$ZIP_FILE"
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pushd $(dirname "$IMG_FILE") > /dev/null
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zip "$ZIP_FILE" $(basename "$IMG_FILE")
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popd > /dev/null
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