108 lines
3.5 KiB
Python
108 lines
3.5 KiB
Python
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# Small utilities used in the payload by multiple places.
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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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import blivet.util
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from pyanaconda.anaconda_loggers import get_module_logger
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from pyanaconda.modules.common.constants.objects import DEVICE_TREE
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from pyanaconda.modules.common.constants.services import STORAGE
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from pyanaconda.modules.common.structures.storage import DeviceData
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log = get_module_logger(__name__)
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def get_device_path(device_name):
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"""Return a device path.
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:param device_name: a device name
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:return: a device path
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"""
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if device_name is None:
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return None
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device_tree = STORAGE.get_proxy(DEVICE_TREE)
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device_data = DeviceData.from_structure(device_tree.GetDeviceData(device_name))
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return device_data.path
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def mount_device(device_name, mount_point):
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"""Mount a filesystem on the device.
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:param device_name: a device name
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:param str mount_point: a path to the mount point
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"""
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device_tree = STORAGE.get_proxy(DEVICE_TREE)
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device_tree.MountDevice(device_name, mount_point, "ro")
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def unmount_device(device_name, mount_point):
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"""Unmount a filesystem on the device.
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FIXME: Always specify the mount point.
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:param device_name: a device name
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:param str mount_point: a path to the mount point or None
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"""
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if not mount_point:
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device_path = get_device_path(device_name)
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mount_paths = get_mount_paths(device_path)
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if not mount_paths:
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return
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mount_point = mount_paths[-1]
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device_tree = STORAGE.get_proxy(DEVICE_TREE)
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device_tree.UnmountDevice(device_name, mount_point)
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def get_mount_paths(device_path):
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"""Given a device node path, return a list of all active mount points.
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:param device_path: a device path
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:return: a list of mount points
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"""
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return blivet.util.get_mount_paths(device_path)
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def unmount(mount_point, raise_exc=False):
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"""Unmount a filesystem.
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:param str mount_point: a mount point
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:param raise_exc: raise an exception if it fails
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"""
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try:
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blivet.util.umount(mount_point)
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except OSError as e:
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log.error(str(e))
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log.info("umount failed -- mounting on top of it")
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if raise_exc:
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raise
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def mount(device_path, mount_point, fstype, options):
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"""Mount a filesystem.
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:param str device_path: a device path
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:param str mount_point: a mount point
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:param str fstype: a filesystem type
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:param str options: mount options
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:raise: OSError on failure
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"""
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return blivet.util.mount(device_path, mount_point, fstype=fstype, options=options)
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