113 lines
4 KiB
Python
113 lines
4 KiB
Python
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#
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# The resizable device tree
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#
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# Copyright (C) 2019 Red Hat, Inc.
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#
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# This copyrighted material is made available to anyone wishing to use,
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# modify, copy, or redistribute it subject to the terms and conditions of
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# the GNU General Public License v.2, or (at your option) any later version.
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# This program is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY expressed or implied, including the implied warranties of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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# Public License for more details. You should have received a copy of the
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# GNU General Public License along with this program; if not, write to the
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# Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 02110-1301, USA. Any Red Hat trademarks that are incorporated in the
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# source code or documentation are not subject to the GNU General Public
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# License and may only be used or replicated with the express permission of
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# Red Hat, Inc.
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#
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from blivet.devices import PartitionDevice
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from blivet.size import Size
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from pyanaconda.anaconda_loggers import get_module_logger
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from pyanaconda.modules.storage.devicetree import DeviceTreeModule
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from pyanaconda.modules.storage.partitioning.automatic.resizable_interface import \
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ResizableDeviceTreeInterface
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from pyanaconda.modules.storage.partitioning.automatic.utils import shrink_device, remove_device
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log = get_module_logger(__name__)
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__all__ = ["ResizableDeviceTreeModule"]
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class ResizableDeviceTreeModule(DeviceTreeModule):
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"""The resizable device tree."""
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def for_publication(self):
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"""Return a DBus representation."""
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return ResizableDeviceTreeInterface(self)
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def is_device_partitioned(self, device_name):
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"""Is the specified device partitioned?
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:param device_name: a name of the device
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:return: True or False
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"""
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device = self._get_device(device_name)
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return self._is_device_partitioned(device)
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@staticmethod
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def _is_device_partitioned(device):
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"""Is the specified device partitioned?"""
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return device.is_disk and device.partitioned and device.format.supported
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def is_device_shrinkable(self, device_name):
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"""Is the specified device shrinkable?
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:param device_name: a name of the device
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:return: True or False
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"""
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device = self._get_device(device_name)
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return device.resizable and device.min_size < device.size
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def get_device_partitions(self, device_name):
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"""Get partitions of the specified device.
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:param device_name: a name of the device
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:return: a list of device names
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"""
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device = self._get_device(device_name)
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if not self._is_device_partitioned(device):
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return []
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return [
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d.name for d in device.children
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if not (
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isinstance(d, PartitionDevice)
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and d.is_extended
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and device.format.logical_partitions
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)
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]
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def get_device_size_limits(self, device_name):
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"""Get size limits of the given device.
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:param device_name: a name of the device
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:return: a tuple of min and max sizes in bytes
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"""
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device = self._get_device(device_name)
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return device.min_size.get_bytes(), device.max_size.get_bytes()
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def shrink_device(self, device_name, size):
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"""Shrink the size of the device.
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:param device_name: a name of the device
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:param size: a new size in bytes
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"""
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size = Size(size)
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device = self._get_device(device_name)
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shrink_device(self.storage, device, size)
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def remove_device(self, device_name):
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"""Remove a device after removing its dependent devices.
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If the device is protected, do nothing. If the device has
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protected children, just remove the unprotected ones.
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:param device_name: a name of the device
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"""
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device = self._get_device(device_name)
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remove_device(self.storage, device)
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