Separate rootfs and image build steps
This commit is contained in:
Braiden Vasco
parent
571b6dd9c4
commit
d3e1b918de
5 changed files with 149 additions and 135 deletions
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@ -2,7 +2,9 @@ before_install:
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- sudo apt-get update
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- sudo apt-get install -y bash quilt parted qemu-user-static debootstrap zerofree dosfstools libcap2-bin grep rsync
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install: sudo ./run ./build.sh
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install:
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- sudo ./run ./build.sh
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- sudo ./run ./mkimg.sh
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script:
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- ./run ./test/partition_alignment.sh
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@ -37,7 +37,7 @@ file is `<tool>[:<debian-package>]`.
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Build
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-----
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Run `sudo ./run ./build.sh` to build the image.
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Run `sudo ./run ./build.sh && sudo ./run ./mkimg.sh` to build the image.
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The following files will be created:
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* `rootfs/` - the root file system (`/` and `/boot/` partitions)
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138
build.sh
138
build.sh
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@ -44,59 +44,17 @@ apply_file() {
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install -m "$MODE" "$SRC" "$DST"
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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 -f 1 -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 [ "$(id -u)" != '0' ]; then
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echo 'Please run as root' 1>&2
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exit 1
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fi
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mkdir -p "$DEPLOY_DIR"
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mkdir -p "$MOUNT_DIR"
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if [ -d "$ROOTFS_DIR" ]; then
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echo "$ROOTFS_DIR already exist"
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exit 1
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fi
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cd "$BASE_DIR"
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#################################
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# START OF ROOT FS BUILD #
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#################################
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if [ ! -d "$ROOTFS_DIR" ]; then
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#################################
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mkdir "$ROOTFS_DIR"
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##
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# Bootstrap a basic Debian system.
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@ -300,89 +258,3 @@ rm -f "$ROOTFS_DIR/usr/sbin/policy-rc.d"
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# Clean Apt cache.
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#
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rm -rf "$ROOTFS_DIR/var/cache/apt/archives/*"
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########################
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fi
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########################
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# END OF ROOT FS BUILD #
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########################
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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 "$ROOTFS_DIR" --block-size=1 | cut -f 1)
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IMG_SIZE=$((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 | cut -d ' ' -f 2 | tr -d B)
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BOOT_LENGTH=$(echo "$PARTED_OUT" | grep -e '^ 1' | xargs echo -n | cut -d ' ' -f 4 | tr -d B)
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ROOT_OFFSET=$(echo "$PARTED_OUT" | grep -e '^ 2' | xargs echo -n | cut -d ' ' -f 2 | tr -d B)
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ROOT_LENGTH=$(echo "$PARTED_OUT" | grep -e '^ 2' | xargs echo -n | 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 "$ROOTFS_DIR/" "$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/PARTUUID=BOOTUUID/PARTUUID=$BOOT_PARTUUID/" "$MOUNT_DIR/etc/fstab"
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sed -i "s/PARTUUID=ROOTUUID/PARTUUID=$ROOT_PARTUUID/" "$MOUNT_DIR/etc/fstab"
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sed -i "s/PARTUUID=ROOTUUID/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 -f 1 -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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136
mkimg.sh
Normal file
136
mkimg.sh
Normal file
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@ -0,0 +1,136 @@
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#!/bin/false
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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 -f 1 -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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if [ "$(id -u)" != '0' ]; then
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echo 'Please run as root' 1>&2
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exit 1
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fi
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if [ ! -d "$ROOTFS_DIR" ]; then
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echo "$ROOTFS_DIR is not a directory"
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exit 1
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fi
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if [ ! -d "$ROOTFS_DIR/boot" ]; then
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echo "$ROOTFS_DIR/boot is not a directory"
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exit 1
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fi
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if [ ! -d "$(dirname "$IMG_FILE")" ]; then
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echo "$(dirname "$IMG_FILE") is not a directory"
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exit 1
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fi
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##
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# Prepare image file systems.
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#
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rm -f "$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" --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 | cut -d ' ' -f 2 | tr -d B)
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BOOT_LENGTH=$(echo "$PARTED_OUT" | grep -e '^ 1' | xargs echo -n | cut -d ' ' -f 4 | tr -d B)
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ROOT_OFFSET=$(echo "$PARTED_OUT" | grep -e '^ 2' | xargs echo -n | cut -d ' ' -f 2 | tr -d B)
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ROOT_LENGTH=$(echo "$PARTED_OUT" | grep -e '^ 2' | xargs echo -n | 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 "$ROOTFS_DIR/" "$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/PARTUUID=BOOTUUID/PARTUUID=$BOOT_PARTUUID/" "$MOUNT_DIR/etc/fstab"
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sed -i "s/PARTUUID=ROOTUUID/PARTUUID=$ROOT_PARTUUID/" "$MOUNT_DIR/etc/fstab"
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sed -i "s/PARTUUID=ROOTUUID/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 -f 1 -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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4
run
4
run
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@ -55,4 +55,8 @@ dependencies_check() {
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dependencies_check "$BASE_DIR/depends"
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cd "$BASE_DIR"
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mkdir -p "$DEPLOY_DIR"
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exec bash -e $@
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