171 lines
7.0 KiB
Python
171 lines
7.0 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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#
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# === This file is part of Calamares - <https://calamares.io> ===
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#
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# SPDX-FileCopyrightText: 2014 Aurélien Gâteau <agateau@kde.org>
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# SPDX-FileCopyrightText: 2017 Alf Gaida <agaida@siduction.org>
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# SPDX-FileCopyrightText: 2019 Adriaan de Groot <groot@kde.org>
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# SPDX-FileCopyrightText: 2019 Kevin Kofler <kevin.kofler@chello.at>
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# SPDX-FileCopyrightText: 2019-2020 Collabora Ltd
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# SPDX-License-Identifier: GPL-3.0-or-later
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#
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# Calamares is Free Software: see the License-Identifier above.
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#
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import tempfile
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import subprocess
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import os
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import libcalamares
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import gettext
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_ = gettext.translation("calamares-python",
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localedir=libcalamares.utils.gettext_path(),
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languages=libcalamares.utils.gettext_languages(),
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fallback=True).gettext
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def pretty_name():
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return _("Mounting partitions.")
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def get_btrfs_subvolumes(partitions):
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"""
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Gets the job-configuration for btrfs subvolumes, or if there is
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none given, returns a default configuration that matches
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the setup (/ and /home) from before configurability was introduced.
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@param partitions
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The partitions (from the partitioning module) that will exist on disk.
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This is used to filter out subvolumes that don't need to be created
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because they get a dedicated partition instead.
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"""
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btrfs_subvolumes = libcalamares.job.configuration.get("btrfsSubvolumes", None)
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# Warn if there's no configuration at all, and empty configurations are
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# replaced by a simple root-only layout.
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if btrfs_subvolumes is None:
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libcalamares.utils.warning("No configuration for btrfsSubvolumes")
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if not btrfs_subvolumes:
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btrfs_subvolumes = [ dict(mountPoint="/", subvolume="/@"), dict(mountPoint="/home", subvolume="/@home") ]
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# Filter out the subvolumes which have a dedicated partition
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non_root_partition_mounts = [ m for m in [ p.get("mountPoint", None) for p in partitions ] if m is not None and m != '/' ]
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btrfs_subvolumes = filter(lambda s : s["mountPoint"] in non_root_partition_mounts, btrfs_subvolumes)
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# If we have a swap **file**, give it a separate subvolume.
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swap_choice = libcalamares.globalstorage.value( "partitionChoices" )
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if swap_choice and swap_choice.get( "swap", None ) == "file":
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btrfs_subvolumes.append({'mountPoint': '/swap', 'subvolume': '/@swap'})
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return btrfs_subvolumes
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def mount_partition(root_mount_point, partition, partitions):
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"""
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Do a single mount of @p partition inside @p root_mount_point.
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"""
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# Create mount point with `+` rather than `os.path.join()` because
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# `partition["mountPoint"]` starts with a '/'.
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raw_mount_point = partition["mountPoint"]
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if not raw_mount_point:
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return
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mount_point = root_mount_point + raw_mount_point
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# Ensure that the created directory has the correct SELinux context on
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# SELinux-enabled systems.
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os.makedirs(mount_point, exist_ok=True)
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try:
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subprocess.call(['chcon', '--reference=' + raw_mount_point, mount_point])
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except FileNotFoundError as e:
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libcalamares.utils.warning(str(e))
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except OSError:
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libcalamares.utils.error("Cannot run 'chcon' normally.")
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raise
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fstype = partition.get("fs", "").lower()
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if fstype == "unformatted":
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return
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if fstype == "fat16" or fstype == "fat32":
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fstype = "vfat"
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device = partition["device"]
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if "luksMapperName" in partition:
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device = os.path.join("/dev/mapper", partition["luksMapperName"])
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if libcalamares.utils.mount(device,
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mount_point,
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fstype,
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partition.get("options", "")) != 0:
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libcalamares.utils.warning("Cannot mount {}".format(device))
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# Special handling for btrfs subvolumes. Create the subvolumes listed in mount.conf
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if fstype == "btrfs" and partition["mountPoint"] == '/':
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# Root has been mounted to btrfs volume -> create subvolumes from configuration
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btrfs_subvolumes = get_btrfs_subvolumes(partitions)
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# Store created list in global storage so it can be used in the fstab module
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libcalamares.globalstorage.insert("btrfsSubvolumes", btrfs_subvolumes)
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# Create the subvolumes that are in the completed list
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for s in btrfs_subvolumes:
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subprocess.check_call(['btrfs', 'subvolume', 'create',
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root_mount_point + s['subvolume']])
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subprocess.check_call(["umount", "-v", root_mount_point])
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device = partition["device"]
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if "luksMapperName" in partition:
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device = os.path.join("/dev/mapper", partition["luksMapperName"])
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# Mount the subvolumes
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for s in btrfs_subvolumes:
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mount_option = "subvol={}".format(s['subvolume'])
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subvolume_mountpoint = mount_point[:-1] + s['mountPoint']
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if libcalamares.utils.mount(device,
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subvolume_mountpoint,
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fstype,
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",".join([mount_option, partition.get("options", "")])) != 0:
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libcalamares.utils.warning("Cannot mount {}".format(device))
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def run():
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"""
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Mount all the partitions from GlobalStorage and from the job configuration.
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Partitions are mounted in-lexical-order of their mountPoint.
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"""
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partitions = libcalamares.globalstorage.value("partitions")
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if not partitions:
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libcalamares.utils.warning("partitions is empty, {!s}".format(partitions))
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return (_("Configuration Error"),
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_("No partitions are defined for <pre>{!s}</pre> to use." ).format("mount"))
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root_mount_point = tempfile.mkdtemp(prefix="calamares-root-")
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# Guard against missing keys (generally a sign that the config file is bad)
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extra_mounts = libcalamares.job.configuration.get("extraMounts") or []
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extra_mounts_efi = libcalamares.job.configuration.get("extraMountsEfi") or []
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if not extra_mounts and not extra_mounts_efi:
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libcalamares.utils.warning("No extra mounts defined. Does mount.conf exist?")
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if libcalamares.globalstorage.value("firmwareType") == "efi":
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extra_mounts.extend(extra_mounts_efi)
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# Add extra mounts to the partitions list and sort by mount points.
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# This way, we ensure / is mounted before the rest, and every mount point
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# is created on the right partition (e.g. if a partition is to be mounted
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# under /tmp, we make sure /tmp is mounted before the partition)
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mountable_partitions = [ p for p in partitions + extra_mounts if "mountPoint" in p and p["mountPoint"] ]
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mountable_partitions.sort(key=lambda x: x["mountPoint"])
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for partition in mountable_partitions:
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mount_partition(root_mount_point, partition, partitions)
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libcalamares.globalstorage.insert("rootMountPoint", root_mount_point)
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# Remember the extra mounts for the unpackfs module
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libcalamares.globalstorage.insert("extraMounts", extra_mounts)
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