diskimage-builder/diskimage_builder/block_device/level1/partition.py
Ian Wienand f94943344f Call kpartx remove in umount, not cleanup
Similar to I697bfbf042816c5ddf170bde9534cc4f0c7279ff, the order of
things called is "dib-block-device umount" *then* "dib-block-device
cleanup".

Because we're doing the "kpartx -d" here in cleanup, it means that the
loop-device is removed in umount phase from level0/localloop.py, then
afterwards we try and remove the partitions.

Change-Id: I7af3c5cf66afd81a481f454b5207af552ad52a32
TODO: a test case to ensure the ordering
2018-06-29 11:22:33 +10:00

92 lines
3.0 KiB
Python

# 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 logging
from diskimage_builder.block_device.exception import \
BlockDeviceSetupException
from diskimage_builder.block_device.plugin import NodeBase
logger = logging.getLogger(__name__)
class PartitionNode(NodeBase):
flag_boot = 1
flag_primary = 2
def __init__(self, config, state, parent, prev_partition):
super(PartitionNode, self).__init__(config['name'], state)
self.base = config['base']
self.partitioning = parent
self.prev_partition = prev_partition
# filter out some MBR only options for clarity
if self.partitioning.label == 'gpt':
if 'flags' in config and 'primary' in config['flags']:
raise BlockDeviceSetupException(
"Primary flag not supported for GPT partitions")
self.flags = set()
if 'flags' in config:
for f in config['flags']:
if f == 'boot':
self.flags.add(self.flag_boot)
elif f == 'primary':
self.flags.add(self.flag_primary)
else:
raise BlockDeviceSetupException("Unknown flag: %s" % f)
if 'size' not in config:
raise BlockDeviceSetupException("No size in partition" % self.name)
self.size = config['size']
if self.partitioning.label == 'gpt':
self.ptype = str(config['type']) if 'type' in config else '8300'
elif self.partitioning.label == 'mbr':
self.ptype = int(config['type'], 16) if 'type' in config else 0x83
def get_flags(self):
return self.flags
def get_size(self):
return self.size
def get_type(self):
return self.ptype
def get_edges(self):
edge_from = [self.base]
edge_to = []
if self.prev_partition is not None:
edge_from.append(self.prev_partition.name)
return (edge_from, edge_to)
# These all call back to the parent "partitioning" object to do
# the real work. Every node calls it, but only one will succeed;
# see the gating we do in the parent function.
#
# XXX: A better model here would be for the parent object to a
# real node in the config graph, so it's create() gets called.
# These can then just be stubs.
def create(self):
self.partitioning.create()
def umount(self):
self.partitioning.umount()
def cleanup(self):
self.partitioning.cleanup()