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separate steps for generating rootfs
Signed-off-by: Avi Deitcher <avi@deitcher.net>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,30 +1,122 @@ | ||
| #!/bin/bash | ||
| # Usage: | ||
| # | ||
| # ./makerootfs.sh <image.yml> <output rootfs image> <fs> <arch> | ||
| # ./makerootfs.sh mode [-y <image.yml>] [-i <output rootfs image>] [-t <tar file>] [-f <filesystem format>] [-a <arch>] | ||
| # <fs> defaults to squash | ||
| # <arch> defaults to the current machine architecture | ||
|
|
||
| set -e | ||
| set -o pipefail | ||
|
|
||
| # mode 3 - generate image from yml | ||
| do_image() { | ||
| # shellcheck disable=SC2166 | ||
| if [ -z "$ymlfile" -o -z "$imgfile" -o -n "$tarfile" ]; then | ||
| echo "must supply ymlfile and imgfile and not tarfile" >&2 | ||
| help | ||
| fi | ||
| # did we specify an architecture? | ||
| ARCHARG="" | ||
| if [ -n "$arch" ]; then | ||
| ARCHARG="-arch ${arch}" | ||
| fi | ||
| : > "$IMAGE" | ||
| # shellcheck disable=SC2086 | ||
| linuxkit build -docker ${ARCHARG} -o - "$ymlfile" | docker run -i --rm -v /dev:/dev --privileged -v "$IMAGE:/rootfs.img" "${MKROOTFS_TAG}" | ||
| } | ||
|
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||
| # mode 1 - generate tarfile from yml and save | ||
| do_tar() { | ||
| # shellcheck disable=SC2166 | ||
| if [ -z "$ymlfile" -o -z "$tarfile" -o -n "$imgfile" ]; then | ||
| echo "must supply ymlfile and tarfile and not imgfile" >&2 | ||
| help | ||
| fi | ||
| # did we specify an architecture? | ||
| ARCHARG="" | ||
| if [ -n "$arch" ]; then | ||
| ARCHARG="-arch ${arch}" | ||
| fi | ||
| # shellcheck disable=SC2086 | ||
| linuxkit build -docker ${ARCHARG} -o "${tarfile}" "$ymlfile" | ||
| } | ||
|
|
||
| # mode 2 - generate image from tarfile | ||
| do_imagefromtar() { | ||
| # shellcheck disable=SC2166 | ||
| if [ -z "$tarfile" -o -z "$imgfile" -o -n "$ymlfile" ]; then | ||
| echo "must supply tarfile and imgfile and not ymlfile" >&2 | ||
| help | ||
| fi | ||
| : > "$IMAGE" | ||
| # shellcheck disable=SC2002 | ||
| cat "${tarfile}" | docker run -i --rm -v /dev:/dev --privileged -v "$IMAGE:/rootfs.img" "${MKROOTFS_TAG}" | ||
| } | ||
|
|
||
| bail() { | ||
| echo "$@" >&2 | ||
| help | ||
| } | ||
|
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||
|
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||
| # no mode we recognize | ||
| help() { | ||
| echo "Usage: $0 <mode> [-y <image.yml>] [-i <output rootfs image>] [-t <tarfile>] [-f {ext4|squash}] [-a <arch>]" >&2 | ||
| echo "must be one of the following modes:" >&2 | ||
| echo " generate final image from yml:" >&2 | ||
| echo " $0 image [-y <image.yml>] [-i <output rootfs image>] [-f {ext4|squash}] [-a <arch>]" >&2 | ||
| echo " generate tar from yml:" >&2 | ||
| echo " $0 tar [-y <image.yml>] [-t <output tarfile>] [-a <arch>]" >&2 | ||
| echo " generate final image from tar:" >&2 | ||
| echo " $0 imagefromtar [-i <output rootfs image>] [-f {ext4|squash}] [-t <input tarfile>]" >&2 | ||
| exit 1 | ||
| } | ||
|
|
||
| # there are 3 modes we can run in: | ||
| # 1. generate tarfile from yml and save | ||
| # 2. generate image from tarfile | ||
| # 3. generate image from yml | ||
| mode="$1" | ||
| shift | ||
|
|
||
| unset tarfile imgfile arch format ymlfile | ||
| while getopts "t:i:a:f:y:h" o | ||
| do | ||
| case $o in | ||
| t) | ||
| tarfile=$OPTARG | ||
| ;; | ||
| i) | ||
| imgfile=$OPTARG | ||
| ;; | ||
| a) | ||
| arch=$OPTARG | ||
| ;; | ||
| f) | ||
| format=$OPTARG | ||
| ;; | ||
| y) | ||
| ymlfile=$OPTARG | ||
| ;; | ||
| h) | ||
| help | ||
| ;; | ||
| *) | ||
| ;; | ||
| esac | ||
| done | ||
|
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||
| [ -z "$format" ] && format="squash" | ||
|
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||
| EVE="$(cd "$(dirname "$0")" && pwd)/../" | ||
| PATH="$EVE/build-tools/bin:$PATH" | ||
| MKROOTFS_TAG="$(linuxkit pkg show-tag "$EVE/pkg/mkrootfs-${3:-squash}")" | ||
| YMLFILE="$1" | ||
| IMAGE="$(cd "$(dirname "$2")" && pwd)/$(basename "$2")" | ||
|
|
||
| if [ ! -f "$YMLFILE" ] || [ $# -lt 2 ]; then | ||
| echo "Usage: $0 <image.yml> <output rootfs image> [{ext4|squash}]" | ||
| exit 1 | ||
| fi | ||
|
|
||
| # did we specify an architecture? | ||
| ARCH="$4" | ||
| ARCHARG="" | ||
| if [ -n "$ARCH" ]; then | ||
| ARCHARG="-arch ${ARCH}" | ||
| fi | ||
|
|
||
| : > "$IMAGE" | ||
| linuxkit build -docker ${ARCHARG} -o - "$YMLFILE" | docker run -i --rm -v /dev:/dev --privileged -v "$IMAGE:/rootfs.img" "${MKROOTFS_TAG}" | ||
| MKROOTFS_TAG="$(linuxkit pkg show-tag "$EVE/pkg/mkrootfs-${format}")" | ||
| IMAGE="$(cd "$(dirname "$imgfile")" && pwd)/$(basename "$imgfile")" | ||
|
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||
| action="do_${mode}" | ||
| #shellcheck disable=SC2039 | ||
| command -V "$action" > /dev/null 2>&1 || bail "Error: unsupported command '$mode'." | ||
|
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||
| # Do. Or do not. There is no try. | ||
| "$action" "$@" | ||
|
|