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Currently, pseudo tracks all files referenced within its presence unless they're listed in an exclusion list. The exclusion list has grown to be fairly unwieldy. This patch swaps PSEUDO_IGNORE_PATHS for PSEUDO_INCLUDE_PATHS which in theory should be easier and more explicit to maintain. This change does drop many directories from pseudo coverage including /home and /tmp. There may be adapatations needed for recipes/classes using pseudo in specific ways. (From OE-Core rev: 2502da81709f25de499277b28d33c915638c45f6) Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
552 lines
22 KiB
Python
552 lines
22 KiB
Python
#
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# Copyright (c) 2013-2016 Intel Corporation.
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#
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# SPDX-License-Identifier: GPL-2.0-only
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#
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# DESCRIPTION
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# This module provides the OpenEmbedded partition object definitions.
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#
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# AUTHORS
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# Tom Zanussi <tom.zanussi (at] linux.intel.com>
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# Ed Bartosh <ed.bartosh> (at] linux.intel.com>
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import logging
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import os
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import uuid
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from wic import WicError
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from wic.misc import exec_cmd, exec_native_cmd, get_bitbake_var
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from wic.pluginbase import PluginMgr
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logger = logging.getLogger('wic')
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class Partition():
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def __init__(self, args, lineno):
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self.args = args
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self.active = args.active
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self.align = args.align
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self.disk = args.disk
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self.device = None
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self.extra_space = args.extra_space
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self.exclude_path = args.exclude_path
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self.include_path = args.include_path
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self.change_directory = args.change_directory
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self.fsopts = args.fsopts
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self.fspassno = args.fspassno
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self.fstype = args.fstype
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self.label = args.label
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self.use_label = args.use_label
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self.mkfs_extraopts = args.mkfs_extraopts
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self.mountpoint = args.mountpoint
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self.no_table = args.no_table
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self.num = None
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self.offset = args.offset
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self.overhead_factor = args.overhead_factor
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self.part_name = args.part_name
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self.part_type = args.part_type
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self.rootfs_dir = args.rootfs_dir
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self.size = args.size
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self.fixed_size = args.fixed_size
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self.source = args.source
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self.sourceparams = args.sourceparams
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self.system_id = args.system_id
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self.use_uuid = args.use_uuid
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self.uuid = args.uuid
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self.fsuuid = args.fsuuid
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self.type = args.type
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self.no_fstab_update = args.no_fstab_update
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self.updated_fstab_path = None
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self.has_fstab = False
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self.update_fstab_in_rootfs = False
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self.hidden = args.hidden
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self.mbr = args.mbr
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self.lineno = lineno
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self.source_file = ""
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def get_extra_block_count(self, current_blocks):
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"""
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The --size param is reflected in self.size (in kB), and we already
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have current_blocks (1k) blocks, calculate and return the
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number of (1k) blocks we need to add to get to --size, 0 if
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we're already there or beyond.
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"""
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logger.debug("Requested partition size for %s: %d",
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self.mountpoint, self.size)
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if not self.size:
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return 0
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requested_blocks = self.size
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logger.debug("Requested blocks %d, current_blocks %d",
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requested_blocks, current_blocks)
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if requested_blocks > current_blocks:
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return requested_blocks - current_blocks
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else:
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return 0
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def get_rootfs_size(self, actual_rootfs_size=0):
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"""
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Calculate the required size of rootfs taking into consideration
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--size/--fixed-size flags as well as overhead and extra space, as
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specified in kickstart file. Raises an error if the
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`actual_rootfs_size` is larger than fixed-size rootfs.
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"""
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if self.fixed_size:
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rootfs_size = self.fixed_size
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if actual_rootfs_size > rootfs_size:
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raise WicError("Actual rootfs size (%d kB) is larger than "
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"allowed size %d kB" %
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(actual_rootfs_size, rootfs_size))
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else:
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extra_blocks = self.get_extra_block_count(actual_rootfs_size)
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if extra_blocks < self.extra_space:
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extra_blocks = self.extra_space
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rootfs_size = actual_rootfs_size + extra_blocks
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rootfs_size = int(rootfs_size * self.overhead_factor)
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logger.debug("Added %d extra blocks to %s to get to %d total blocks",
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extra_blocks, self.mountpoint, rootfs_size)
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return rootfs_size
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@property
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def disk_size(self):
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"""
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Obtain on-disk size of partition taking into consideration
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--size/--fixed-size options.
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"""
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return self.fixed_size if self.fixed_size else self.size
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def prepare(self, creator, cr_workdir, oe_builddir, rootfs_dir,
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bootimg_dir, kernel_dir, native_sysroot, updated_fstab_path):
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"""
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Prepare content for individual partitions, depending on
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partition command parameters.
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"""
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self.updated_fstab_path = updated_fstab_path
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if self.updated_fstab_path and not (self.fstype.startswith("ext") or self.fstype == "msdos"):
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self.update_fstab_in_rootfs = True
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if not self.source:
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if self.fstype == "none" or self.no_table:
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return
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if not self.size and not self.fixed_size:
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raise WicError("The %s partition has a size of zero. Please "
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"specify a non-zero --size/--fixed-size for that "
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"partition." % self.mountpoint)
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if self.fstype == "swap":
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self.prepare_swap_partition(cr_workdir, oe_builddir,
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native_sysroot)
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self.source_file = "%s/fs.%s" % (cr_workdir, self.fstype)
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else:
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if self.fstype in ('squashfs', 'erofs'):
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raise WicError("It's not possible to create empty %s "
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"partition '%s'" % (self.fstype, self.mountpoint))
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rootfs = "%s/fs_%s.%s.%s" % (cr_workdir, self.label,
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self.lineno, self.fstype)
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if os.path.isfile(rootfs):
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os.remove(rootfs)
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prefix = "ext" if self.fstype.startswith("ext") else self.fstype
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method = getattr(self, "prepare_empty_partition_" + prefix)
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method(rootfs, oe_builddir, native_sysroot)
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self.source_file = rootfs
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return
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plugins = PluginMgr.get_plugins('source')
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if self.source not in plugins:
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raise WicError("The '%s' --source specified for %s doesn't exist.\n\t"
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"See 'wic list source-plugins' for a list of available"
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" --sources.\n\tSee 'wic help source-plugins' for "
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"details on adding a new source plugin." %
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(self.source, self.mountpoint))
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srcparams_dict = {}
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if self.sourceparams:
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# Split sourceparams string of the form key1=val1[,key2=val2,...]
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# into a dict. Also accepts valueless keys i.e. without =
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splitted = self.sourceparams.split(',')
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srcparams_dict = dict((par.split('=', 1) + [None])[:2] for par in splitted if par)
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plugin = PluginMgr.get_plugins('source')[self.source]
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plugin.do_configure_partition(self, srcparams_dict, creator,
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cr_workdir, oe_builddir, bootimg_dir,
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kernel_dir, native_sysroot)
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plugin.do_stage_partition(self, srcparams_dict, creator,
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cr_workdir, oe_builddir, bootimg_dir,
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kernel_dir, native_sysroot)
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plugin.do_prepare_partition(self, srcparams_dict, creator,
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cr_workdir, oe_builddir, bootimg_dir,
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kernel_dir, rootfs_dir, native_sysroot)
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plugin.do_post_partition(self, srcparams_dict, creator,
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cr_workdir, oe_builddir, bootimg_dir,
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kernel_dir, rootfs_dir, native_sysroot)
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# further processing required Partition.size to be an integer, make
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# sure that it is one
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if not isinstance(self.size, int):
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raise WicError("Partition %s internal size is not an integer. "
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"This a bug in source plugin %s and needs to be fixed." %
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(self.mountpoint, self.source))
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if self.fixed_size and self.size > self.fixed_size:
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raise WicError("File system image of partition %s is "
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"larger (%d kB) than its allowed size %d kB" %
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(self.mountpoint, self.size, self.fixed_size))
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def prepare_rootfs(self, cr_workdir, oe_builddir, rootfs_dir,
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native_sysroot, real_rootfs = True, pseudo_dir = None):
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"""
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Prepare content for a rootfs partition i.e. create a partition
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and fill it from a /rootfs dir.
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Currently handles ext2/3/4, btrfs, vfat and squashfs.
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"""
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rootfs = "%s/rootfs_%s.%s.%s" % (cr_workdir, self.label,
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self.lineno, self.fstype)
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if os.path.isfile(rootfs):
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os.remove(rootfs)
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p_prefix = os.environ.get("PSEUDO_PREFIX", "%s/usr" % native_sysroot)
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if (pseudo_dir):
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# Canonicalize the ignore paths. This corresponds to
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# calling oe.path.canonicalize(), which is used in bitbake.conf.
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include_paths = [rootfs_dir] + (get_bitbake_var("PSEUDO_INCLUDE_PATHS") or "").split(",")
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canonical_paths = []
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for path in include_paths:
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if "$" not in path:
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trailing_slash = path.endswith("/") and "/" or ""
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canonical_paths.append(os.path.realpath(path) + trailing_slash)
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include_paths = ",".join(canonical_paths)
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pseudo = "export PSEUDO_PREFIX=%s;" % p_prefix
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pseudo += "export PSEUDO_LOCALSTATEDIR=%s;" % pseudo_dir
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pseudo += "export PSEUDO_PASSWD=%s;" % rootfs_dir
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pseudo += "export PSEUDO_NOSYMLINKEXP=1;"
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pseudo += "export PSEUDO_INCLUDE_PATHS=%s;" % include_paths
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pseudo += "%s " % get_bitbake_var("FAKEROOTCMD")
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else:
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pseudo = None
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if not self.size and real_rootfs:
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# The rootfs size is not set in .ks file so try to get it
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# from bitbake variable
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rsize_bb = get_bitbake_var('ROOTFS_SIZE')
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rdir = get_bitbake_var('IMAGE_ROOTFS')
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if rsize_bb and (rdir == rootfs_dir or (rootfs_dir.split('/')[-2] == "tmp-wic" and rootfs_dir.split('/')[-1][:6] == "rootfs")):
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# Bitbake variable ROOTFS_SIZE is calculated in
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# Image._get_rootfs_size method from meta/lib/oe/image.py
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# using IMAGE_ROOTFS_SIZE, IMAGE_ROOTFS_ALIGNMENT,
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# IMAGE_OVERHEAD_FACTOR and IMAGE_ROOTFS_EXTRA_SPACE
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self.size = int(round(float(rsize_bb)))
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else:
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# Bitbake variable ROOTFS_SIZE is not defined so compute it
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# from the rootfs_dir size using the same logic found in
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# get_rootfs_size() from meta/classes/image.bbclass
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du_cmd = "du -ks %s" % rootfs_dir
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out = exec_cmd(du_cmd)
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self.size = int(out.split()[0])
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prefix = "ext" if self.fstype.startswith("ext") else self.fstype
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method = getattr(self, "prepare_rootfs_" + prefix)
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method(rootfs, cr_workdir, oe_builddir, rootfs_dir, native_sysroot, pseudo)
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self.source_file = rootfs
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# get the rootfs size in the right units for kickstart (kB)
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du_cmd = "du -Lbks %s" % rootfs
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out = exec_cmd(du_cmd)
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self.size = int(out.split()[0])
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def prepare_rootfs_ext(self, rootfs, cr_workdir, oe_builddir, rootfs_dir,
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native_sysroot, pseudo):
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"""
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Prepare content for an ext2/3/4 rootfs partition.
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"""
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du_cmd = "du -ks %s" % rootfs_dir
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out = exec_cmd(du_cmd)
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actual_rootfs_size = int(out.split()[0])
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rootfs_size = self.get_rootfs_size(actual_rootfs_size)
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with open(rootfs, 'w') as sparse:
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os.ftruncate(sparse.fileno(), rootfs_size * 1024)
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extraopts = self.mkfs_extraopts or "-F -i 8192"
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# use hash_seed to generate reproducible ext4 images
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(extraopts, pseudo) = self.get_hash_seed_ext4(extraopts, pseudo)
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label_str = ""
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if self.label:
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label_str = "-L %s" % self.label
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mkfs_cmd = "mkfs.%s %s %s %s -U %s -d %s" % \
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(self.fstype, extraopts, rootfs, label_str, self.fsuuid, rootfs_dir)
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exec_native_cmd(mkfs_cmd, native_sysroot, pseudo=pseudo)
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if self.updated_fstab_path and self.has_fstab and not self.no_fstab_update:
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debugfs_script_path = os.path.join(cr_workdir, "debugfs_script")
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with open(debugfs_script_path, "w") as f:
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f.write("cd etc\n")
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f.write("rm fstab\n")
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f.write("write %s fstab\n" % (self.updated_fstab_path))
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debugfs_cmd = "debugfs -w -f %s %s" % (debugfs_script_path, rootfs)
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exec_native_cmd(debugfs_cmd, native_sysroot)
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mkfs_cmd = "fsck.%s -pvfD %s" % (self.fstype, rootfs)
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exec_native_cmd(mkfs_cmd, native_sysroot, pseudo=pseudo)
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if os.getenv('SOURCE_DATE_EPOCH'):
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sde_time = hex(int(os.getenv('SOURCE_DATE_EPOCH')))
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debugfs_script_path = os.path.join(cr_workdir, "debugfs_script")
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files = []
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for root, dirs, others in os.walk(rootfs_dir):
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base = root.replace(rootfs_dir, "").rstrip(os.sep)
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files += [ "/" if base == "" else base ]
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files += [ base + "/" + n for n in dirs + others ]
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with open(debugfs_script_path, "w") as f:
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f.write("set_current_time %s\n" % (sde_time))
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if self.updated_fstab_path and self.has_fstab and not self.no_fstab_update:
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f.write("set_inode_field /etc/fstab mtime %s\n" % (sde_time))
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f.write("set_inode_field /etc/fstab mtime_extra 0\n")
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for file in set(files):
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for time in ["atime", "ctime", "crtime"]:
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f.write("set_inode_field \"%s\" %s %s\n" % (file, time, sde_time))
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f.write("set_inode_field \"%s\" %s_extra 0\n" % (file, time))
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for time in ["wtime", "mkfs_time", "lastcheck"]:
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f.write("set_super_value %s %s\n" % (time, sde_time))
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for time in ["mtime", "first_error_time", "last_error_time"]:
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f.write("set_super_value %s 0\n" % (time))
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debugfs_cmd = "debugfs -w -f %s %s" % (debugfs_script_path, rootfs)
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exec_native_cmd(debugfs_cmd, native_sysroot)
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self.check_for_Y2038_problem(rootfs, native_sysroot)
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def get_hash_seed_ext4(self, extraopts, pseudo):
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if os.getenv('SOURCE_DATE_EPOCH'):
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sde_time = int(os.getenv('SOURCE_DATE_EPOCH'))
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if pseudo:
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pseudo = "export E2FSPROGS_FAKE_TIME=%s;%s " % (sde_time, pseudo)
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else:
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pseudo = "export E2FSPROGS_FAKE_TIME=%s; " % sde_time
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# Set hash_seed to generate deterministic directory indexes
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namespace = uuid.UUID("e7429877-e7b3-4a68-a5c9-2f2fdf33d460")
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if self.fsuuid:
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namespace = uuid.UUID(self.fsuuid)
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hash_seed = str(uuid.uuid5(namespace, str(sde_time)))
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extraopts += " -E hash_seed=%s" % hash_seed
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return (extraopts, pseudo)
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def prepare_rootfs_btrfs(self, rootfs, cr_workdir, oe_builddir, rootfs_dir,
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native_sysroot, pseudo):
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"""
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Prepare content for a btrfs rootfs partition.
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"""
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du_cmd = "du -ks %s" % rootfs_dir
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out = exec_cmd(du_cmd)
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actual_rootfs_size = int(out.split()[0])
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rootfs_size = self.get_rootfs_size(actual_rootfs_size)
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with open(rootfs, 'w') as sparse:
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os.ftruncate(sparse.fileno(), rootfs_size * 1024)
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label_str = ""
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if self.label:
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label_str = "-L %s" % self.label
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mkfs_cmd = "mkfs.%s -b %d -r %s %s %s -U %s %s" % \
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(self.fstype, rootfs_size * 1024, rootfs_dir, label_str,
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self.mkfs_extraopts, self.fsuuid, rootfs)
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exec_native_cmd(mkfs_cmd, native_sysroot, pseudo=pseudo)
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def prepare_rootfs_msdos(self, rootfs, cr_workdir, oe_builddir, rootfs_dir,
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native_sysroot, pseudo):
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"""
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Prepare content for a msdos/vfat rootfs partition.
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"""
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du_cmd = "du -bks %s" % rootfs_dir
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out = exec_cmd(du_cmd)
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blocks = int(out.split()[0])
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rootfs_size = self.get_rootfs_size(blocks)
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label_str = "-n boot"
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if self.label:
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label_str = "-n %s" % self.label
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size_str = ""
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extraopts = self.mkfs_extraopts or '-S 512'
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dosfs_cmd = "mkdosfs %s -i %s %s %s -C %s %d" % \
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(label_str, self.fsuuid, size_str, extraopts, rootfs,
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rootfs_size)
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exec_native_cmd(dosfs_cmd, native_sysroot)
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mcopy_cmd = "mcopy -i %s -s %s/* ::/" % (rootfs, rootfs_dir)
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exec_native_cmd(mcopy_cmd, native_sysroot)
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if self.updated_fstab_path and self.has_fstab and not self.no_fstab_update:
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mcopy_cmd = "mcopy -m -i %s %s ::/etc/fstab" % (rootfs, self.updated_fstab_path)
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exec_native_cmd(mcopy_cmd, native_sysroot)
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chmod_cmd = "chmod 644 %s" % rootfs
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exec_cmd(chmod_cmd)
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prepare_rootfs_vfat = prepare_rootfs_msdos
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def prepare_rootfs_squashfs(self, rootfs, cr_workdir, oe_builddir, rootfs_dir,
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native_sysroot, pseudo):
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"""
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Prepare content for a squashfs rootfs partition.
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"""
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extraopts = self.mkfs_extraopts or '-noappend'
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squashfs_cmd = "mksquashfs %s %s %s" % \
|
|
(rootfs_dir, rootfs, extraopts)
|
|
exec_native_cmd(squashfs_cmd, native_sysroot, pseudo=pseudo)
|
|
|
|
def prepare_rootfs_erofs(self, rootfs, cr_workdir, oe_builddir, rootfs_dir,
|
|
native_sysroot, pseudo):
|
|
"""
|
|
Prepare content for a erofs rootfs partition.
|
|
"""
|
|
extraopts = self.mkfs_extraopts or ''
|
|
erofs_cmd = "mkfs.erofs %s -U %s %s %s" % \
|
|
(extraopts, self.fsuuid, rootfs, rootfs_dir)
|
|
exec_native_cmd(erofs_cmd, native_sysroot, pseudo=pseudo)
|
|
|
|
def prepare_empty_partition_none(self, rootfs, oe_builddir, native_sysroot):
|
|
pass
|
|
|
|
def prepare_empty_partition_ext(self, rootfs, oe_builddir,
|
|
native_sysroot):
|
|
"""
|
|
Prepare an empty ext2/3/4 partition.
|
|
"""
|
|
size = self.disk_size
|
|
with open(rootfs, 'w') as sparse:
|
|
os.ftruncate(sparse.fileno(), size * 1024)
|
|
|
|
extraopts = self.mkfs_extraopts or "-i 8192"
|
|
|
|
# use hash_seed to generate reproducible ext4 images
|
|
(extraopts, pseudo) = self.get_hash_seed_ext4(extraopts, None)
|
|
|
|
label_str = ""
|
|
if self.label:
|
|
label_str = "-L %s" % self.label
|
|
|
|
mkfs_cmd = "mkfs.%s -F %s %s -U %s %s" % \
|
|
(self.fstype, extraopts, label_str, self.fsuuid, rootfs)
|
|
exec_native_cmd(mkfs_cmd, native_sysroot, pseudo=pseudo)
|
|
|
|
self.check_for_Y2038_problem(rootfs, native_sysroot)
|
|
|
|
def prepare_empty_partition_btrfs(self, rootfs, oe_builddir,
|
|
native_sysroot):
|
|
"""
|
|
Prepare an empty btrfs partition.
|
|
"""
|
|
size = self.disk_size
|
|
with open(rootfs, 'w') as sparse:
|
|
os.ftruncate(sparse.fileno(), size * 1024)
|
|
|
|
label_str = ""
|
|
if self.label:
|
|
label_str = "-L %s" % self.label
|
|
|
|
mkfs_cmd = "mkfs.%s -b %d %s -U %s %s %s" % \
|
|
(self.fstype, self.size * 1024, label_str, self.fsuuid,
|
|
self.mkfs_extraopts, rootfs)
|
|
exec_native_cmd(mkfs_cmd, native_sysroot)
|
|
|
|
def prepare_empty_partition_msdos(self, rootfs, oe_builddir,
|
|
native_sysroot):
|
|
"""
|
|
Prepare an empty vfat partition.
|
|
"""
|
|
blocks = self.disk_size
|
|
|
|
label_str = "-n boot"
|
|
if self.label:
|
|
label_str = "-n %s" % self.label
|
|
|
|
size_str = ""
|
|
|
|
extraopts = self.mkfs_extraopts or '-S 512'
|
|
|
|
dosfs_cmd = "mkdosfs %s -i %s %s %s -C %s %d" % \
|
|
(label_str, self.fsuuid, extraopts, size_str, rootfs,
|
|
blocks)
|
|
|
|
exec_native_cmd(dosfs_cmd, native_sysroot)
|
|
|
|
chmod_cmd = "chmod 644 %s" % rootfs
|
|
exec_cmd(chmod_cmd)
|
|
|
|
prepare_empty_partition_vfat = prepare_empty_partition_msdos
|
|
|
|
def prepare_swap_partition(self, cr_workdir, oe_builddir, native_sysroot):
|
|
"""
|
|
Prepare a swap partition.
|
|
"""
|
|
path = "%s/fs.%s" % (cr_workdir, self.fstype)
|
|
|
|
with open(path, 'w') as sparse:
|
|
os.ftruncate(sparse.fileno(), self.size * 1024)
|
|
|
|
label_str = ""
|
|
if self.label:
|
|
label_str = "-L %s" % self.label
|
|
|
|
mkswap_cmd = "mkswap %s -U %s %s" % (label_str, self.fsuuid, path)
|
|
exec_native_cmd(mkswap_cmd, native_sysroot)
|
|
|
|
def check_for_Y2038_problem(self, rootfs, native_sysroot):
|
|
"""
|
|
Check if the filesystem is affected by the Y2038 problem
|
|
(Y2038 problem = 32 bit time_t overflow in January 2038)
|
|
"""
|
|
def get_err_str(part):
|
|
err = "The {} filesystem {} has no Y2038 support."
|
|
if part.mountpoint:
|
|
args = [part.fstype, "mounted at %s" % part.mountpoint]
|
|
elif part.label:
|
|
args = [part.fstype, "labeled '%s'" % part.label]
|
|
elif part.part_name:
|
|
args = [part.fstype, "in partition '%s'" % part.part_name]
|
|
else:
|
|
args = [part.fstype, "in partition %s" % part.num]
|
|
return err.format(*args)
|
|
|
|
# ext2 and ext3 are always affected by the Y2038 problem
|
|
if self.fstype in ["ext2", "ext3"]:
|
|
logger.warn(get_err_str(self))
|
|
return
|
|
|
|
ret, out = exec_native_cmd("dumpe2fs %s" % rootfs, native_sysroot)
|
|
|
|
# if ext4 is affected by the Y2038 problem depends on the inode size
|
|
for line in out.splitlines():
|
|
if line.startswith("Inode size:"):
|
|
size = int(line.split(":")[1].strip())
|
|
if size < 256:
|
|
logger.warn("%s Inodes (of size %d) are too small." %
|
|
(get_err_str(self), size))
|
|
break
|
|
|