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# Copyright (C) 2018 Codethink Limited
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library. If not, see <http://www.gnu.org/licenses/>.
#
# Authors:
# Christopher Phang <christopher.phang@codethink.co.uk>
"""fastboot_ext4 image build element
A :mod:`ScriptElement <buildstream.scriptelement>` implementation for creating
fastboot ext4sparse images
The fastboot default configuration:
.. literalinclude:: ../../../bst_external/elements/fastboot_ext4.yaml
:language: yaml
"""
from buildstream import ScriptElement
# Element implementation for the 'FastbootExt4Image' kind.
# Based on the implementation for generating x86 images
class FastbootExt4ImageElement(ScriptElement):
def configure(self, node):
command_steps = [
"create_dev_proc_shadow",
"create_img",
"install_img"
]
self.node_validate(node,
command_steps + ["base", "input"])
for step in command_steps:
if step not in node:
raise ElementError("{}: Unexpectedly missing command step '{}'"
.format(self, step))
cmds = self.node_subst_list(node, step)
self.add_commands(step, cmds)
self.layout_add(self.node_subst_member(node, 'base'), "/")
self.layout_add(None, '/buildstream')
self.layout_add(self.node_subst_member(node, 'input'),
self.get_variable('build-root'))
self.set_work_dir()
self.set_install_root()
self.set_root_read_only(True)
# Plugin entry point
def setup():
return FastbootExt4ImageElement
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