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83 lines
3.1 KiB
83 lines
3.1 KiB
#!/bin/bash -e
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# vim: set ts=4 sw=4 sts=4 et :
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# Source external scripts
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source "${SCRIPTSDIR}/vars.sh"
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source "${SCRIPTSDIR}/distribution.sh"
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INSTALLDIR="$(readlink -m mnt)"
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# Make sure ${INSTALLDIR} is not mounted
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umount_all "${INSTALLDIR}" || true
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# ==============================================================================
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# Execute any template flavor or sub flavor 'pre' scripts
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# ==============================================================================
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buildStep "${0}" "pre"
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# ==============================================================================
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# Use a snapshot of the debootstraped debian image
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# ==============================================================================
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manage_snapshot() {
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local snapshot="${1}"
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umount_kill "${INSTALLDIR}" || true
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mount -o loop "${IMG}" "${INSTALLDIR}" || exit 1
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# Remove old snapshots if groups completed
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if [ -e "${INSTALLDIR}/${TMPDIR}/.prepared_groups" ]; then
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outputc stout "Removing stale snapshots"
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umount_kill "${INSTALLDIR}" || true
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rm -rf "${debootstrap_snapshot}"
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rm -rf "${packages_snapshot}"
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return
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fi
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outputc stout "Replacing ${IMG} with snapshot ${snapshot}"
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umount_kill "${INSTALLDIR}" || true
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cp -f "${snapshot}" "${IMG}"
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}
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# ==============================================================================
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# Determine if a snapshot should be used, reuse an existing image or
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# delete the existing image to start fresh based on configuration options
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#
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# SNAPSHOT=1 - Use snapshots; Will remove after successful build
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# If debootstrap did not complete, the existing image will be deleted
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# ==============================================================================
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splitPath "${IMG}" path_parts
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packages_snapshot="${path_parts[dir]}${path_parts[base]}-packages${path_parts[dotext]}"
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debootstrap_snapshot="${path_parts[dir]}${path_parts[base]}-debootstrap${path_parts[dotext]}"
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if [ -f "${IMG}" ]; then
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if [ -f "${packages_snapshot}" -a "${SNAPSHOT}" == "1" ]; then
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# Use 'packages' snapshot
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manage_snapshot "${packages_snapshot}"
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elif [ -f "${debootstrap_snapshot}" -a "${SNAPSHOT}" == "1" ]; then
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# Use 'debootstrap' snapshot
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manage_snapshot "${debootstrap_snapshot}"
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else
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# Use '$IMG' if debootstrap did not fail
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mount -o loop "${IMG}" "${INSTALLDIR}" || exit 1
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# Assume a failed debootstrap installation if .prepared_debootstrap does not exist
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if [ -e "${INSTALLDIR}/${TMPDIR}/.prepared_debootstrap" ]; then
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debug "Reusing existing image ${IMG}"
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else
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outputc stout "Removing stale or incomplete ${IMG}"
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umount_kill "${INSTALLDIR}" || true
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rm -f "${IMG}"
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fi
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# Umount image; don't fail if its already umounted
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umount_kill "${INSTALLDIR}" || true
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fi
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fi
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# ==============================================================================
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# Execute any template flavor or sub flavor 'post' scripts
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# ==============================================================================
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buildStep "${0}" "post"
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