diff options
Diffstat (limited to 'scripts/lib/wic/kickstart/custom_commands/partition.py')
| -rw-r--r-- | scripts/lib/wic/kickstart/custom_commands/partition.py | 496 |
1 files changed, 496 insertions, 0 deletions
diff --git a/scripts/lib/wic/kickstart/custom_commands/partition.py b/scripts/lib/wic/kickstart/custom_commands/partition.py new file mode 100644 index 0000000000..24f523ae41 --- /dev/null +++ b/scripts/lib/wic/kickstart/custom_commands/partition.py @@ -0,0 +1,496 @@ +# 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 |