3d48a528c1
Block device handling can be somewhat complex - especially when taking things like md, lvm or encryption into account. This patch factors out the creation and deletion of the local loop image device handling into a python library. The main propose of this patch is to implement the needed infrastructure. Based on this, more advanced functions can be added. Example: (advanced) partitioning, LVM, handling different boot scenarios (BIOS, UEFI, ...), possibility of handling multiple images (local loop image, iSCSI, physical hard disk, ...), handling of different filesystems for different partitions / LVs. Change-Id: Ib626b36a00f8a5dc3dbde8df3e2619a2438eaaf1 Signed-off-by: Andreas Florath <andreas@florath.net>
82 lines
2.7 KiB
Python
82 lines
2.7 KiB
Python
# Copyright 2016 Andreas Florath (andreas@florath.net)
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License"); you may
|
|
# not use this file except in compliance with the License. You may obtain
|
|
# a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
# License for the specific language governing permissions and limitations
|
|
# under the License.
|
|
|
|
import argparse
|
|
from diskimage_builder.block_device.blockdevice import BlockDevice
|
|
from diskimage_builder import logging_config
|
|
import logging
|
|
|
|
|
|
def val_else_none(s):
|
|
return s if s is None or len(s) > 0 else None
|
|
|
|
|
|
def generate_phase_doc():
|
|
phase_doc = ""
|
|
bdattrs = dir(BlockDevice)
|
|
for attr in bdattrs:
|
|
if attr.startswith("cmd_"):
|
|
phase_doc += " '" + attr[4:] + "'\n"
|
|
method = getattr(BlockDevice, attr, None)
|
|
# The first line is the line that is used
|
|
phase_doc += " " + method.__doc__.split("\n")[0] + "\n"
|
|
return phase_doc
|
|
|
|
|
|
def main():
|
|
logging_config.setup()
|
|
logger = logging.getLogger(__name__)
|
|
phase_doc = generate_phase_doc()
|
|
|
|
parser = argparse.ArgumentParser(
|
|
formatter_class=argparse.RawDescriptionHelpFormatter,
|
|
description="Create block device layer",
|
|
epilog="Available phases:\n" + phase_doc)
|
|
parser.add_argument('--phase', required=True,
|
|
help="phase to execute")
|
|
parser.add_argument('--config', required=False,
|
|
help="configuration for block device "
|
|
"layer as JSON object")
|
|
parser.add_argument('--build-dir', required=True,
|
|
help="path to temporary build dir")
|
|
parser.add_argument('--image-size', required=False,
|
|
help="default image size")
|
|
parser.add_argument('--image-dir', required=False,
|
|
help="default image directory")
|
|
args = parser.parse_args()
|
|
|
|
logger.info("phase [%s]" % args.phase)
|
|
logger.info("config [%s]" % args.config)
|
|
logger.info("build_dir [%s]" % args.build_dir)
|
|
|
|
bd = BlockDevice(val_else_none(args.config),
|
|
val_else_none(args.build_dir),
|
|
val_else_none(args.image_size),
|
|
val_else_none(args.image_dir))
|
|
|
|
# Check if the method is available
|
|
method = getattr(bd, "cmd_" + args.phase, None)
|
|
if callable(method):
|
|
# If so: call it.
|
|
method()
|
|
else:
|
|
logger.error("phase [%s] does not exists" % args.phase)
|
|
return 1
|
|
|
|
return 0
|
|
|
|
|
|
if __name__ == "__main__":
|
|
main()
|