421 lines
16 KiB
Python
421 lines
16 KiB
Python
# ex:ts=4:sw=4:sts=4:et
|
|
# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
|
|
#
|
|
# Copyright (c) 2013-2016 Intel Corporation.
|
|
# All rights reserved.
|
|
#
|
|
# This program is free software; you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License version 2 as
|
|
# published by the Free Software Foundation.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License along
|
|
# with this program; if not, write to the Free Software Foundation, Inc.,
|
|
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
#
|
|
# DESCRIPTION
|
|
# This module provides the OpenEmbedded partition object definitions.
|
|
#
|
|
# AUTHORS
|
|
# Tom Zanussi <tom.zanussi (at] linux.intel.com>
|
|
# Ed Bartosh <ed.bartosh> (at] linux.intel.com>
|
|
|
|
import logging
|
|
import os
|
|
|
|
from wic import WicError
|
|
from wic.misc import exec_cmd, exec_native_cmd, get_bitbake_var
|
|
from wic.pluginbase import PluginMgr
|
|
|
|
logger = logging.getLogger('wic')
|
|
|
|
class Partition():
|
|
|
|
def __init__(self, args, lineno):
|
|
self.args = args
|
|
self.active = args.active
|
|
self.align = args.align
|
|
self.disk = args.disk
|
|
self.device = None
|
|
self.extra_space = args.extra_space
|
|
self.exclude_path = args.exclude_path
|
|
self.fsopts = args.fsopts
|
|
self.fstype = args.fstype
|
|
self.label = args.label
|
|
self.mkfs_extraopts = args.mkfs_extraopts
|
|
self.mountpoint = args.mountpoint
|
|
self.no_table = args.no_table
|
|
self.num = None
|
|
self.overhead_factor = args.overhead_factor
|
|
self.part_name = args.part_name
|
|
self.part_type = args.part_type
|
|
self.rootfs_dir = args.rootfs_dir
|
|
self.size = args.size
|
|
self.fixed_size = args.fixed_size
|
|
self.source = args.source
|
|
self.sourceparams = args.sourceparams
|
|
self.system_id = args.system_id
|
|
self.use_uuid = args.use_uuid
|
|
self.uuid = args.uuid
|
|
|
|
self.lineno = lineno
|
|
self.source_file = ""
|
|
self.sourceparams_dict = {}
|
|
|
|
def get_extra_block_count(self, current_blocks):
|
|
"""
|
|
The --size param is reflected in self.size (in kB), and we already
|
|
have current_blocks (1k) blocks, calculate and return the
|
|
number of (1k) blocks we need to add to get to --size, 0 if
|
|
we're already there or beyond.
|
|
"""
|
|
logger.debug("Requested partition size for %s: %d",
|
|
self.mountpoint, self.size)
|
|
|
|
if not self.size:
|
|
return 0
|
|
|
|
requested_blocks = self.size
|
|
|
|
logger.debug("Requested blocks %d, current_blocks %d",
|
|
requested_blocks, current_blocks)
|
|
|
|
if requested_blocks > current_blocks:
|
|
return requested_blocks - current_blocks
|
|
else:
|
|
return 0
|
|
|
|
def get_rootfs_size(self, actual_rootfs_size=0):
|
|
"""
|
|
Calculate the required size of rootfs taking into consideration
|
|
--size/--fixed-size flags as well as overhead and extra space, as
|
|
specified in kickstart file. Raises an error if the
|
|
`actual_rootfs_size` is larger than fixed-size rootfs.
|
|
|
|
"""
|
|
if self.fixed_size:
|
|
rootfs_size = self.fixed_size
|
|
if actual_rootfs_size > rootfs_size:
|
|
raise WicError("Actual rootfs size (%d kB) is larger than "
|
|
"allowed size %d kB" %
|
|
(actual_rootfs_size, rootfs_size))
|
|
else:
|
|
extra_blocks = self.get_extra_block_count(actual_rootfs_size)
|
|
if extra_blocks < self.extra_space:
|
|
extra_blocks = self.extra_space
|
|
|
|
rootfs_size = actual_rootfs_size + extra_blocks
|
|
rootfs_size *= self.overhead_factor
|
|
|
|
logger.debug("Added %d extra blocks to %s to get to %d total blocks",
|
|
extra_blocks, self.mountpoint, rootfs_size)
|
|
|
|
return rootfs_size
|
|
|
|
@property
|
|
def disk_size(self):
|
|
"""
|
|
Obtain on-disk size of partition taking into consideration
|
|
--size/--fixed-size options.
|
|
|
|
"""
|
|
return self.fixed_size if self.fixed_size else self.size
|
|
|
|
def prepare(self, creator, cr_workdir, oe_builddir, rootfs_dir,
|
|
bootimg_dir, kernel_dir, native_sysroot):
|
|
"""
|
|
Prepare content for individual partitions, depending on
|
|
partition command parameters.
|
|
"""
|
|
if not self.source:
|
|
if not self.size and not self.fixed_size:
|
|
raise WicError("The %s partition has a size of zero. Please "
|
|
"specify a non-zero --size/--fixed-size for that "
|
|
"partition." % self.mountpoint)
|
|
|
|
if self.fstype == "swap":
|
|
self.prepare_swap_partition(cr_workdir, oe_builddir,
|
|
native_sysroot)
|
|
self.source_file = "%s/fs.%s" % (cr_workdir, self.fstype)
|
|
else:
|
|
if self.fstype == 'squashfs':
|
|
raise WicError("It's not possible to create empty squashfs "
|
|
"partition '%s'" % (self.mountpoint))
|
|
|
|
rootfs = "%s/fs_%s.%s.%s" % (cr_workdir, self.label,
|
|
self.lineno, self.fstype)
|
|
if os.path.isfile(rootfs):
|
|
os.remove(rootfs)
|
|
|
|
prefix = "ext" if self.fstype.startswith("ext") else self.fstype
|
|
method = getattr(self, "prepare_empty_partition_" + prefix)
|
|
method(rootfs, oe_builddir, native_sysroot)
|
|
self.source_file = rootfs
|
|
return
|
|
|
|
plugins = PluginMgr.get_plugins('source')
|
|
|
|
if self.source not in plugins:
|
|
raise WicError("The '%s' --source specified for %s doesn't exist.\n\t"
|
|
"See 'wic list source-plugins' for a list of available"
|
|
" --sources.\n\tSee 'wic help source-plugins' for "
|
|
"details on adding a new source plugin." %
|
|
(self.source, self.mountpoint))
|
|
|
|
srcparams_dict = {}
|
|
if self.sourceparams:
|
|
# Split sourceparams string of the form key1=val1[,key2=val2,...]
|
|
# into a dict. Also accepts valueless keys i.e. without =
|
|
splitted = self.sourceparams.split(',')
|
|
srcparams_dict = dict(par.split('=') for par in splitted if par)
|
|
|
|
plugin = PluginMgr.get_plugins('source')[self.source]
|
|
plugin.do_configure_partition(self, srcparams_dict, creator,
|
|
cr_workdir, oe_builddir, bootimg_dir,
|
|
kernel_dir, native_sysroot)
|
|
plugin.do_stage_partition(self, srcparams_dict, creator,
|
|
cr_workdir, oe_builddir, bootimg_dir,
|
|
kernel_dir, native_sysroot)
|
|
plugin.do_prepare_partition(self, srcparams_dict, creator,
|
|
cr_workdir, oe_builddir, bootimg_dir,
|
|
kernel_dir, rootfs_dir, native_sysroot)
|
|
|
|
# further processing required Partition.size to be an integer, make
|
|
# sure that it is one
|
|
if not isinstance(self.size, int):
|
|
raise WicError("Partition %s internal size is not an integer. "
|
|
"This a bug in source plugin %s and needs to be fixed." %
|
|
(self.mountpoint, self.source))
|
|
|
|
if self.fixed_size and self.size > self.fixed_size:
|
|
raise WicError("File system image of partition %s is "
|
|
"larger (%d kB) than its allowed size %d kB" %
|
|
(self.mountpoint, self.size, self.fixed_size))
|
|
|
|
def prepare_rootfs(self, cr_workdir, oe_builddir, rootfs_dir,
|
|
native_sysroot):
|
|
"""
|
|
Prepare content for a rootfs partition i.e. create a partition
|
|
and fill it from a /rootfs dir.
|
|
|
|
Currently handles ext2/3/4, btrfs and vfat.
|
|
"""
|
|
p_prefix = os.environ.get("PSEUDO_PREFIX", "%s/usr" % native_sysroot)
|
|
p_localstatedir = os.environ.get("PSEUDO_LOCALSTATEDIR",
|
|
"%s/../pseudo" % rootfs_dir)
|
|
p_passwd = os.environ.get("PSEUDO_PASSWD", rootfs_dir)
|
|
p_nosymlinkexp = os.environ.get("PSEUDO_NOSYMLINKEXP", "1")
|
|
pseudo = "export PSEUDO_PREFIX=%s;" % p_prefix
|
|
pseudo += "export PSEUDO_LOCALSTATEDIR=%s;" % p_localstatedir
|
|
pseudo += "export PSEUDO_PASSWD=%s;" % p_passwd
|
|
pseudo += "export PSEUDO_NOSYMLINKEXP=%s;" % p_nosymlinkexp
|
|
pseudo += "%s " % get_bitbake_var("FAKEROOTCMD")
|
|
|
|
rootfs = "%s/rootfs_%s.%s.%s" % (cr_workdir, self.label,
|
|
self.lineno, self.fstype)
|
|
if os.path.isfile(rootfs):
|
|
os.remove(rootfs)
|
|
|
|
# Get rootfs size from bitbake variable if it's not set in .ks file
|
|
if not self.size:
|
|
# Bitbake variable ROOTFS_SIZE is calculated in
|
|
# Image._get_rootfs_size method from meta/lib/oe/image.py
|
|
# using IMAGE_ROOTFS_SIZE, IMAGE_ROOTFS_ALIGNMENT,
|
|
# IMAGE_OVERHEAD_FACTOR and IMAGE_ROOTFS_EXTRA_SPACE
|
|
rsize_bb = get_bitbake_var('ROOTFS_SIZE')
|
|
if rsize_bb:
|
|
logger.warning('overhead-factor was specified, but size was not,'
|
|
' so bitbake variables will be used for the size.'
|
|
' In this case both IMAGE_OVERHEAD_FACTOR and '
|
|
'--overhead-factor will be applied')
|
|
self.size = int(round(float(rsize_bb)))
|
|
|
|
prefix = "ext" if self.fstype.startswith("ext") else self.fstype
|
|
method = getattr(self, "prepare_rootfs_" + prefix)
|
|
method(rootfs, oe_builddir, rootfs_dir, native_sysroot, pseudo)
|
|
self.source_file = rootfs
|
|
|
|
# get the rootfs size in the right units for kickstart (kB)
|
|
du_cmd = "du -Lbks %s" % rootfs
|
|
out = exec_cmd(du_cmd)
|
|
self.size = int(out.split()[0])
|
|
|
|
def prepare_rootfs_ext(self, rootfs, oe_builddir, rootfs_dir,
|
|
native_sysroot, pseudo):
|
|
"""
|
|
Prepare content for an ext2/3/4 rootfs partition.
|
|
"""
|
|
du_cmd = "du -ks %s" % rootfs_dir
|
|
out = exec_cmd(du_cmd)
|
|
actual_rootfs_size = int(out.split()[0])
|
|
|
|
rootfs_size = self.get_rootfs_size(actual_rootfs_size)
|
|
|
|
with open(rootfs, 'w') as sparse:
|
|
os.ftruncate(sparse.fileno(), rootfs_size * 1024)
|
|
|
|
extraopts = self.mkfs_extraopts or "-F -i 8192"
|
|
|
|
label_str = ""
|
|
if self.label:
|
|
label_str = "-L %s" % self.label
|
|
|
|
mkfs_cmd = "mkfs.%s %s %s %s -d %s" % \
|
|
(self.fstype, extraopts, rootfs, label_str, rootfs_dir)
|
|
exec_native_cmd(mkfs_cmd, native_sysroot, pseudo=pseudo)
|
|
|
|
mkfs_cmd = "fsck.%s -pvfD %s" % (self.fstype, rootfs)
|
|
exec_native_cmd(mkfs_cmd, native_sysroot, pseudo=pseudo)
|
|
|
|
def prepare_rootfs_btrfs(self, rootfs, oe_builddir, rootfs_dir,
|
|
native_sysroot, pseudo):
|
|
"""
|
|
Prepare content for a btrfs rootfs partition.
|
|
|
|
Currently handles ext2/3/4 and btrfs.
|
|
"""
|
|
du_cmd = "du -ks %s" % rootfs_dir
|
|
out = exec_cmd(du_cmd)
|
|
actual_rootfs_size = int(out.split()[0])
|
|
|
|
rootfs_size = self.get_rootfs_size(actual_rootfs_size)
|
|
|
|
with open(rootfs, 'w') as sparse:
|
|
os.ftruncate(sparse.fileno(), rootfs_size * 1024)
|
|
|
|
label_str = ""
|
|
if self.label:
|
|
label_str = "-L %s" % self.label
|
|
|
|
mkfs_cmd = "mkfs.%s -b %d -r %s %s %s %s" % \
|
|
(self.fstype, rootfs_size * 1024, rootfs_dir, label_str,
|
|
self.mkfs_extraopts, rootfs)
|
|
exec_native_cmd(mkfs_cmd, native_sysroot, pseudo=pseudo)
|
|
|
|
def prepare_rootfs_msdos(self, rootfs, oe_builddir, rootfs_dir,
|
|
native_sysroot, pseudo):
|
|
"""
|
|
Prepare content for a msdos/vfat rootfs partition.
|
|
"""
|
|
du_cmd = "du -bks %s" % rootfs_dir
|
|
out = exec_cmd(du_cmd)
|
|
blocks = int(out.split()[0])
|
|
|
|
rootfs_size = self.get_rootfs_size(blocks)
|
|
|
|
label_str = "-n boot"
|
|
if self.label:
|
|
label_str = "-n %s" % self.label
|
|
|
|
size_str = ""
|
|
if self.fstype == 'msdos':
|
|
size_str = "-F 16" # FAT 16
|
|
|
|
extraopts = self.mkfs_extraopts or '-S 512'
|
|
|
|
dosfs_cmd = "mkdosfs %s %s %s -C %s %d" % \
|
|
(label_str, size_str, extraopts, rootfs, rootfs_size)
|
|
exec_native_cmd(dosfs_cmd, native_sysroot)
|
|
|
|
mcopy_cmd = "mcopy -i %s -s %s/* ::/" % (rootfs, rootfs_dir)
|
|
exec_native_cmd(mcopy_cmd, native_sysroot)
|
|
|
|
chmod_cmd = "chmod 644 %s" % rootfs
|
|
exec_cmd(chmod_cmd)
|
|
|
|
prepare_rootfs_vfat = prepare_rootfs_msdos
|
|
|
|
def prepare_rootfs_squashfs(self, rootfs, oe_builddir, rootfs_dir,
|
|
native_sysroot, pseudo):
|
|
"""
|
|
Prepare content for a squashfs rootfs partition.
|
|
"""
|
|
extraopts = self.mkfs_extraopts or '-noappend'
|
|
squashfs_cmd = "mksquashfs %s %s %s" % \
|
|
(rootfs_dir, rootfs, extraopts)
|
|
exec_native_cmd(squashfs_cmd, native_sysroot, pseudo=pseudo)
|
|
|
|
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"
|
|
|
|
label_str = ""
|
|
if self.label:
|
|
label_str = "-L %s" % self.label
|
|
|
|
mkfs_cmd = "mkfs.%s -F %s %s %s" % \
|
|
(self.fstype, extraopts, label_str, rootfs)
|
|
exec_native_cmd(mkfs_cmd, 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 %s %s" % \
|
|
(self.fstype, self.size * 1024, label_str,
|
|
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 = ""
|
|
if self.fstype == 'msdos':
|
|
size_str = "-F 16" # FAT 16
|
|
|
|
extraopts = self.mkfs_extraopts or '-S 512'
|
|
|
|
dosfs_cmd = "mkdosfs %s %s %s -C %s %d" % \
|
|
(label_str, 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)
|
|
|
|
import uuid
|
|
label_str = ""
|
|
if self.label:
|
|
label_str = "-L %s" % self.label
|
|
mkswap_cmd = "mkswap %s -U %s %s" % (label_str, str(uuid.uuid1()), path)
|
|
exec_native_cmd(mkswap_cmd, native_sysroot)
|