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358b738f63
Change-Id: Ief6360b636884b02bdf74baeb6c4103eb180d2b7 BUG=6151 TEST=run it Review URL: http://codereview.chromium.org/3331011
101 lines
3.2 KiB
Bash
Executable File
101 lines
3.2 KiB
Bash
Executable File
#!/bin/bash
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# Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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# Load common constants. This should be the first executable line.
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# The path to common.sh should be relative to your script's location.
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. "$(dirname $0)/common.sh"
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# Script must be run inside the chroot
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restart_in_chroot_if_needed $*
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DEFINE_string version "" \
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"Assume current chroot version is this."
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DEFINE_boolean force_latest "${FLAGS_false}" \
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"Assume latest version and recreate the version file"
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DEFINE_boolean skipfirst "${FLAGS_false}" \
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"Skip the first upgrade. This may be dangerous."
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FLAGS "$@" || exit 1
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VERSION_FILE=~/.version
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######################################################################
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# Latest version is the version of last upgrade.d file.
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# Name format is ${number}_${short_description}
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# Versions must be -n sorted, that is, the first continuous sequence
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# of numbers is what counts. 12_ is before 111_, etc.
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LATEST_VERSION=$(
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ls "$(dirname $0)/upgrade.d" | grep "^[0-9]*_" | \
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sort -n | tail -n 1 | cut -f1 -d'_'
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)
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CHROOT_VERSION=$(cat ${VERSION_FILE})
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# Check if it's a number.
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if ! [ "${CHROOT_VERSION}" -ge "0" ] &> /dev/null; then
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error "Your chroot version file ${VERSION_FILE} is bogus: ${CHROOT_VERSION}"
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exit 1
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fi
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if [ -n "${FLAGS_force_latest}" ]; then
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echo "${LATEST_VERSION}" > "${VERSION_FILE}"
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exit 0
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fi
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if [ -n "${FLAGS_skipfirst}" ]; then
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if [ "${CHROOT_VERSION}" -lt "${LATEST_VERSION}" ]; then
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CHROOT_VERSION=$(expr ${CHROOT_VERSION} + 1)
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fi
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fi
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if [ -n "${FLAGS_version}" ]; then
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# Check if it's a number.
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if [ "${FLAGS_version}" -ge "0" ] &> /dev/null; then
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CHROOT_VERSION="${FLAGS_version}"
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else
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error "Trying to force invalid version: ${FLAGS_version}"
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exit 1
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fi
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fi
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# default goes here
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if ! [ -f "${VERSION_FILE}" ]; then
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warn "Warning: chroot of unknown version, assuming 0"
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echo "0" > "${VERSION_FILE}"
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fi
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if [ "${LATEST_VERSION}" -gt "${CHROOT_VERSION}" ]; then
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echo "Outdated chroot found"
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pushd "$(dirname $0)/upgrade.d/" 1> /dev/null
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for n in $(seq "$(expr ${CHROOT_VERSION} + 1)" "${LATEST_VERSION}"); do
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# Deprecation check; Deprecation can be done by removing old upgrade
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# scripts and causing too old chroots to have to start over.
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# This also means that the scripts have to form a continuous sequence.
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if ! [ -f ${n}_* ]; then
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error "Fatal: Upgrade ${n} doesn't exist."
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error "Your chroot is too old, you need to re-create it!"
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exit 1
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fi
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info "Rollup $(echo ${n}_*)"
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# Attempt the upgrade.
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# NOTE: We source the upgrade scripts because:
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# 1) We can impose set -something on them.
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# 2) They can reuse local variables and functions (fe. from common.sh)
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# A side effect is that the scripts have to be internally enclosed in
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# a code block, otherwise simply running "exit" in any of them would
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# terminate the master script, and there would be no way to pass the
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# return value from them.
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if ! source ${n}_*; then
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error "Fatal: failed to upgrade ${n}!"
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exit 1
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fi
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echo "${n}" > "${VERSION_FILE}"
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done
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popd 1> /dev/null
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fi
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