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# Copyright 2021 Andy Piper
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# =*= License: GPL-3+ =*=
import vmdb
class ZerofreePlugin(vmdb.Plugin):
def enable(self):
self.app.step_runners.add(ZerofreeStepRunner())
class ZerofreeStepRunner(vmdb.StepRunnerInterface):
def get_key_spec(self):
return {"zerofree": str}
def run(self, values, settings, state):
tag = values["zerofree"]
dev = state.tags.get_dev(tag)
mount_point = state.tags.get_builder_mount_point(tag)
try:
vmdb.runcmd(["mount", "-o", "remount,ro", mount_point])
vmdb.runcmd(["zerofree", "-v", dev])
finally:
vmdb.runcmd(["mount", "-o", "remount,rw", mount_point])
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