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d8f9d05bae
poky/scripts/lib/wic/kickstart/custom_commands/partition.py
Tom Zanussi d8f9d05bae wic: Rename /mic to /wic 
As well as any other stray instances of mic in the codebase that can
be removed.

We don't really need to carry around legacy naming, and the history is
in git.

(From OE-Core rev: 598b120406dc1d2b7e377bd1ab6f0acbef034b22)

Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
2014-08-11 10:53:12 +01:00

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# ex:ts=4:sw=4:sts=4:et
# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
#
# Copyright (c) 2013, 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>
#
import shutil
import os
import tempfile
from pykickstart.commands.partition import *
from wic.utils.oe.misc import *
from wic.kickstart.custom_commands import *
from wic.plugin import pluginmgr
partition_methods = {
"do_stage_partition":None,
"do_prepare_partition":None,
"do_configure_partition":None,
}
class Wic_PartData(Mic_PartData):
removedKeywords = Mic_PartData.removedKeywords
removedAttrs = Mic_PartData.removedAttrs
def __init__(self, *args, **kwargs):
Mic_PartData.__init__(self, *args, **kwargs)
self.deleteRemovedAttrs()
self.source = kwargs.get("source", None)
self.rootfs = kwargs.get("rootfs-dir", None)
self.source_file = ""
self.size = 0
def _getArgsAsStr(self):
retval = Mic_PartData._getArgsAsStr(self)
if self.source:
retval += " --source=%s" % self.source
if self.rootfs:
retval += " --rootfs-dir=%s" % self.rootfs
return retval
def get_rootfs(self):
"""
Acessor for rootfs dir
"""
return self.rootfs
def set_rootfs(self, rootfs):
"""
Acessor for actual rootfs dir, which must be set by source
plugins.
"""
self.rootfs = rootfs
def get_size(self):
"""
Accessor for partition size, 0 or --size before set_size().
"""
return self.size
def set_size(self, size):
"""
Accessor for actual partition size, which must be set by source
plugins.
"""
self.size = size
def set_source_file(self, source_file):
"""
Accessor for source_file, the location of the generated partition
image, which must be set by source plugins.
"""
self.source_file = source_file
def get_extra_block_count(self, current_blocks):
"""
The --size param is reflected in self.size (in MB), 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.
"""
msger.debug("Requested partition size for %s: %d" % \
(self.mountpoint, self.size))
if not self.size:
return 0
requested_blocks = self.size * 1024
msger.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 prepare(self, cr, 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:
msger.error("The %s partition has a size of zero. Please specify a non-zero --size for that partition." % self.mountpoint)
if self.fstype and self.fstype == "swap":
self.prepare_swap_partition(cr_workdir, oe_builddir,
native_sysroot)
elif self.fstype:
self.prepare_empty_partition(cr_workdir, oe_builddir,
native_sysroot)
return
plugins = pluginmgr.get_source_plugins()
if self.source not in plugins:
msger.error("The '%s' --source specified for %s doesn't exist.\n\tSee '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))
self._source_methods = pluginmgr.get_source_plugin_methods(self.source, partition_methods)
self._source_methods["do_configure_partition"](self, cr, cr_workdir,
oe_builddir,
bootimg_dir,
kernel_dir,
native_sysroot)
self._source_methods["do_stage_partition"](self, cr, cr_workdir,
oe_builddir,
bootimg_dir, kernel_dir,
native_sysroot)
self._source_methods["do_prepare_partition"](self, cr, cr_workdir,
oe_builddir,
bootimg_dir, kernel_dir, rootfs_dir,
native_sysroot)
def prepare_rootfs_from_fs_image(self, cr_workdir, oe_builddir,
rootfs_dir):
"""
Handle an already-created partition e.g. xxx.ext3
"""
rootfs = oe_builddir
du_cmd = "du -Lbms %s" % rootfs
out = exec_cmd(du_cmd)
rootfs_size = out.split()[0]
self.size = rootfs_size
self.source_file = rootfs
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 and btrfs.
"""
pseudo = "export PSEUDO_PREFIX=%s/usr;" % native_sysroot
pseudo += "export PSEUDO_LOCALSTATEDIR=%s/../pseudo;" % rootfs_dir
pseudo += "export PSEUDO_PASSWD=%s;" % rootfs_dir
pseudo += "export PSEUDO_NOSYMLINKEXP=1;"
pseudo += "%s/usr/bin/pseudo " % native_sysroot
if self.fstype.startswith("ext"):
return self.prepare_rootfs_ext(cr_workdir, oe_builddir,
rootfs_dir, native_sysroot,
pseudo)
elif self.fstype.startswith("btrfs"):
return self.prepare_rootfs_btrfs(cr_workdir, oe_builddir,
rootfs_dir, native_sysroot,
pseudo)
elif self.fstype.startswith("vfat"):
return self.prepare_rootfs_vfat(cr_workdir, oe_builddir,
rootfs_dir, native_sysroot,
pseudo)
elif self.fstype.startswith("squashfs"):
return self.prepare_rootfs_squashfs(cr_workdir, oe_builddir,
rootfs_dir, native_sysroot,
pseudo)
def prepare_rootfs_ext(self, cr_workdir, oe_builddir, rootfs_dir,
native_sysroot, pseudo):
"""
Prepare content for an ext2/3/4 rootfs partition.
"""
image_rootfs = rootfs_dir
rootfs = "%s/rootfs_%s.%s" % (cr_workdir, self.label ,self.fstype)
du_cmd = "du -ks %s" % image_rootfs
out = exec_cmd(du_cmd)
actual_rootfs_size = int(out.split()[0])
extra_blocks = self.get_extra_block_count(actual_rootfs_size)
if extra_blocks < IMAGE_EXTRA_SPACE:
extra_blocks = IMAGE_EXTRA_SPACE
rootfs_size = actual_rootfs_size + extra_blocks
msger.debug("Added %d extra blocks to %s to get to %d total blocks" % \
(extra_blocks, self.mountpoint, rootfs_size))
dd_cmd = "dd if=/dev/zero of=%s bs=1024 seek=%d count=0 bs=1k" % \
(rootfs, rootfs_size)
exec_cmd(dd_cmd)
extra_imagecmd = "-i 8192"
mkfs_cmd = "mkfs.%s -F %s %s -d %s" % \
(self.fstype, extra_imagecmd, rootfs, image_rootfs)
exec_native_cmd(pseudo + mkfs_cmd, native_sysroot)
# get the rootfs size in the right units for kickstart (Mb)
du_cmd = "du -Lbms %s" % rootfs
out = exec_cmd(du_cmd)
rootfs_size = out.split()[0]
self.size = rootfs_size
self.source_file = rootfs
return 0
def prepare_rootfs_btrfs(self, cr_workdir, oe_builddir, rootfs_dir,
native_sysroot, pseudo):
"""
Prepare content for a btrfs rootfs partition.
Currently handles ext2/3/4 and btrfs.
"""
image_rootfs = rootfs_dir
rootfs = "%s/rootfs_%s.%s" % (cr_workdir, self.label, self.fstype)
du_cmd = "du -ks %s" % image_rootfs
out = exec_cmd(du_cmd)
actual_rootfs_size = int(out.split()[0])
extra_blocks = self.get_extra_block_count(actual_rootfs_size)
if extra_blocks < IMAGE_EXTRA_SPACE:
extra_blocks = IMAGE_EXTRA_SPACE
rootfs_size = actual_rootfs_size + extra_blocks
msger.debug("Added %d extra blocks to %s to get to %d total blocks" % \
(extra_blocks, self.mountpoint, rootfs_size))
dd_cmd = "dd if=/dev/zero of=%s bs=1024 seek=%d count=0 bs=1k" % \
(rootfs, rootfs_size)
exec_cmd(dd_cmd)
mkfs_cmd = "mkfs.%s -b %d -r %s %s" % \
(self.fstype, rootfs_size * 1024, image_rootfs, rootfs)
exec_native_cmd(pseudo + mkfs_cmd, native_sysroot)
# get the rootfs size in the right units for kickstart (Mb)
du_cmd = "du -Lbms %s" % rootfs
out = exec_cmd(du_cmd)
rootfs_size = out.split()[0]
self.size = rootfs_size
self.source_file = rootfs
def prepare_rootfs_vfat(self, cr_workdir, oe_builddir, rootfs_dir,
native_sysroot, pseudo):
"""
Prepare content for a vfat rootfs partition.
"""
image_rootfs = rootfs_dir
rootfs = "%s/rootfs_%s.%s" % (cr_workdir, self.label, self.fstype)
du_cmd = "du -bks %s" % image_rootfs
out = exec_cmd(du_cmd)
blocks = int(out.split()[0])
extra_blocks = self.get_extra_block_count(blocks)
if extra_blocks < BOOTDD_EXTRA_SPACE:
extra_blocks = BOOTDD_EXTRA_SPACE
blocks += extra_blocks
msger.debug("Added %d extra blocks to %s to get to %d total blocks" % \
(extra_blocks, self.mountpoint, blocks))
# Ensure total sectors is an integral number of sectors per
# track or mcopy will complain. Sectors are 512 bytes, and we
# generate images with 32 sectors per track. This calculation is
# done in blocks, thus the mod by 16 instead of 32.
blocks += (16 - (blocks % 16))
dosfs_cmd = "mkdosfs -n boot -S 512 -C %s %d" % (rootfs, blocks)
exec_native_cmd(dosfs_cmd, native_sysroot)
mcopy_cmd = "mcopy -i %s -s %s/* ::/" % (rootfs, image_rootfs)
rc, out = exec_native_cmd(mcopy_cmd, native_sysroot)
if rc:
msger.error("ERROR: mcopy returned '%s' instead of 0 (which you probably don't want to ignore, use --debug for details)" % rc)
chmod_cmd = "chmod 644 %s" % rootfs
exec_cmd(chmod_cmd)
# get the rootfs size in the right units for kickstart (Mb)
du_cmd = "du -Lbms %s" % rootfs
out = exec_cmd(du_cmd)
rootfs_size = out.split()[0]
self.set_size(rootfs_size)
self.set_source_file(rootfs)
def prepare_rootfs_squashfs(self, cr_workdir, oe_builddir, rootfs_dir,
native_sysroot, pseudo):
"""
Prepare content for a squashfs rootfs partition.
"""
image_rootfs = rootfs_dir
rootfs = "%s/rootfs_%s.%s" % (cr_workdir, self.label ,self.fstype)
squashfs_cmd = "mksquashfs %s %s -noappend" % \
(image_rootfs, rootfs)
exec_native_cmd(pseudo + squashfs_cmd, native_sysroot)
# get the rootfs size in the right units for kickstart (Mb)
du_cmd = "du -Lbms %s" % rootfs
out = exec_cmd(du_cmd)
rootfs_size = out.split()[0]
self.size = rootfs_size
self.source_file = rootfs
return 0
def prepare_empty_partition(self, cr_workdir, oe_builddir, native_sysroot):
"""
Prepare an empty partition.
"""
if self.fstype.startswith("ext"):
return self.prepare_empty_partition_ext(cr_workdir, oe_builddir,
native_sysroot)
elif self.fstype.startswith("btrfs"):
return self.prepare_empty_partition_btrfs(cr_workdir, oe_builddir,
native_sysroot)
elif self.fstype.startswith("vfat"):
return self.prepare_empty_partition_vfat(cr_workdir, oe_builddir,
native_sysroot)
elif self.fstype.startswith("squashfs"):
return self.prepare_empty_partition_squashfs(cr_workdir, oe_builddir,
native_sysroot)
def prepare_empty_partition_ext(self, cr_workdir, oe_builddir,
native_sysroot):
"""
Prepare an empty ext2/3/4 partition.
"""
fs = "%s/fs.%s" % (cr_workdir, self.fstype)
dd_cmd = "dd if=/dev/zero of=%s bs=1M seek=%d count=0" % \
(fs, self.size)
exec_cmd(dd_cmd)
extra_imagecmd = "-i 8192"
mkfs_cmd = "mkfs.%s -F %s %s" % (self.fstype, extra_imagecmd, fs)
exec_native_cmd(mkfs_cmd, native_sysroot)
self.source_file = fs
return 0
def prepare_empty_partition_btrfs(self, cr_workdir, oe_builddir,
native_sysroot):
"""
Prepare an empty btrfs partition.
"""
fs = "%s/fs.%s" % (cr_workdir, self.fstype)
dd_cmd = "dd if=/dev/zero of=%s bs=1M seek=%d count=0" % \
(fs, self.size)
exec_cmd(dd_cmd)
mkfs_cmd = "mkfs.%s -b %d %s" % (self.fstype, self.size * 1024, rootfs)
exec_native_cmd(mkfs_cmd, native_sysroot)
mkfs_cmd = "mkfs.%s -F %s %s" % (self.fstype, extra_imagecmd, fs)
exec_native_cmd(mkfs_cmd, native_sysroot)
self.source_file = fs
return 0
def prepare_empty_partition_vfat(self, cr_workdir, oe_builddir,
native_sysroot):
"""
Prepare an empty vfat partition.
"""
fs = "%s/fs.%s" % (cr_workdir, self.fstype)
blocks = self.size * 1024
dosfs_cmd = "mkdosfs -n boot -S 512 -C %s %d" % (fs, blocks)
exec_native_cmd(dosfs_cmd, native_sysroot)
chmod_cmd = "chmod 644 %s" % fs
exec_cmd(chmod_cmd)
self.source_file = fs
return 0
def prepare_empty_partition_squashfs(self, cr_workdir, oe_builddir,
native_sysroot):
"""
Prepare an empty squashfs partition.
"""
msger.warning("Creating of an empty squashfs %s partition was attempted. " \
"Proceeding as requested." % self.mountpoint)
fs = "%s/fs_%s.%s" % (cr_workdir, self.label, self.fstype)
# it is not possible to create a squashfs without source data,
# thus prepare an empty temp dir that is used as source
tmpdir = tempfile.mkdtemp()
squashfs_cmd = "mksquashfs %s %s -noappend" % \
(tmpdir, fs)
exec_native_cmd(squashfs_cmd, native_sysroot)
os.rmdir(tmpdir)
# get the rootfs size in the right units for kickstart (Mb)
du_cmd = "du -Lbms %s" % fs
out = exec_cmd(du_cmd)
fs_size = out.split()[0]
self.size = fs_size
self.source_file = fs
return 0
def prepare_swap_partition(self, cr_workdir, oe_builddir, native_sysroot):
"""
Prepare a swap partition.
"""
fs = "%s/fs.%s" % (cr_workdir, self.fstype)
dd_cmd = "dd if=/dev/zero of=%s bs=1M seek=%d count=0" % \
(fs, self.size)
exec_cmd(dd_cmd)
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()), fs)
exec_native_cmd(mkswap_cmd, native_sysroot)
self.source_file = fs
return 0
class Wic_Partition(Mic_Partition):
removedKeywords = Mic_Partition.removedKeywords
removedAttrs = Mic_Partition.removedAttrs
def _getParser(self):
op = Mic_Partition._getParser(self)
# use specified source file to fill the partition
# and calculate partition size
op.add_option("--source", type="string", action="store",
dest="source", default=None)
# use specified rootfs path to fill the partition
op.add_option("--rootfs-dir", type="string", action="store",
dest="rootfs", default=None)
return op
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