diff options
Diffstat (limited to 'yocto-poky/scripts/lib/wic/kickstart/custom_commands/partition.py')
| -rw-r--r-- | yocto-poky/scripts/lib/wic/kickstart/custom_commands/partition.py | 526 |
1 files changed, 526 insertions, 0 deletions
diff --git a/yocto-poky/scripts/lib/wic/kickstart/custom_commands/partition.py b/yocto-poky/scripts/lib/wic/kickstart/custom_commands/partition.py new file mode 100644 index 000000000..eee25a493 --- /dev/null +++ b/yocto-poky/scripts/lib/wic/kickstart/custom_commands/partition.py @@ -0,0 +1,526 @@ +# 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 os +import tempfile +import uuid +from optparse import OptionValueError + +from pykickstart.commands.partition import FC4_PartData, FC4_Partition +from wic.utils.oe.misc import msger, parse_sourceparams +from wic.utils.oe.misc import exec_cmd, exec_native_cmd +from wic.plugin import pluginmgr + +partition_methods = { + "do_stage_partition":None, + "do_prepare_partition":None, + "do_configure_partition":None, +} + +class Wic_PartData(FC4_PartData): + removedKeywords = FC4_PartData.removedKeywords + removedAttrs = FC4_PartData.removedAttrs + + def __init__(self, *args, **kwargs): + FC4_PartData.__init__(self, *args, **kwargs) + self.deleteRemovedAttrs() + self.align = kwargs.get("align", None) + self.extopts = kwargs.get("extopts", None) + self.part_type = kwargs.get("part_type", None) + self.source = kwargs.get("source", None) + self.sourceparams = kwargs.get("sourceparams", None) + self.rootfs = kwargs.get("rootfs-dir", None) + self.no_table = kwargs.get("no-table", False) + self.extra_space = kwargs.get("extra-space", "10M") + self.overhead_factor = kwargs.get("overhead-factor", 1.3) + self._use_uuid = False + self.uuid = kwargs.get("uuid", None) + self.use_uuid = kwargs.get("use-uuid", False) + self.source_file = "" + self.size = 0 + + def _getArgsAsStr(self): + retval = FC4_PartData._getArgsAsStr(self) + + if self.align: + retval += " --align=%d" % self.align + if self.extopts: + retval += " --extoptions=%s" % self.extopts + if self.part_type: + retval += " --part-type=%s" % self.part_type + if self.source: + retval += " --source=%s" % self.source + if self.sourceparams: + retval += " --sourceparams=%s" % self.sourceparams + if self.rootfs: + retval += " --rootfs-dir=%s" % self.rootfs + if self.no_table: + retval += " --no-table" + if self.use_uuid: + retval += " --use-uuid" + if self.uuid: + retval += " --uuid=%s" % self.uuid + retval += " --extra-space=%s" % self.extra_space + retval += " --overhead-factor=%f" % self.overhead_factor + + return retval + + @property + def use_uuid(self): + return self._use_uuid + + @use_uuid.setter + def use_uuid(self, value): + self._use_uuid = value + if value and not self.uuid: + self.uuid = str(uuid.uuid4()) + + 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 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. + """ + msger.debug("Requested partition size for %s: %d" % \ + (self.mountpoint, self.size)) + + if not self.size: + return 0 + + requested_blocks = self.size + + 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, creator, cr_workdir, oe_builddir, rootfs_dir, bootimg_dir, + kernel_dir, native_sysroot): + """ + Prepare content for individual partitions, depending on + partition command parameters. + """ + self.sourceparams_dict = {} + + if self.sourceparams: + self.sourceparams_dict = parse_sourceparams(self.sourceparams) + + 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: + rootfs = "%s/fs_%s.%s.%s" % (cr_workdir, self.label, + self.lineno, self.fstype) + if os.path.isfile(rootfs): + os.remove(rootfs) + for prefix in ("ext", "btrfs", "vfat", "squashfs"): + if self.fstype.startswith(prefix): + method = getattr(self, + "prepare_empty_partition_" + prefix) + method(rootfs, oe_builddir, native_sysroot) + self.source_file = rootfs + break + return + + plugins = pluginmgr.get_source_plugins() + + if self.source not in plugins: + msger.error("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)) + + self._source_methods = pluginmgr.get_source_plugin_methods(\ + self.source, partition_methods) + self._source_methods["do_configure_partition"](self, self.sourceparams_dict, + creator, cr_workdir, + oe_builddir, + bootimg_dir, + kernel_dir, + native_sysroot) + self._source_methods["do_stage_partition"](self, self.sourceparams_dict, + creator, cr_workdir, + oe_builddir, + bootimg_dir, kernel_dir, + native_sysroot) + self._source_methods["do_prepare_partition"](self, self.sourceparams_dict, + creator, 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 -Lbks %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, 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/usr/bin/pseudo " % native_sysroot + + rootfs = "%s/rootfs_%s.%s.%s" % (cr_workdir, self.label, + self.lineno, self.fstype) + if os.path.isfile(rootfs): + os.remove(rootfs) + + for prefix in ("ext", "btrfs", "vfat", "squashfs"): + if self.fstype.startswith(prefix): + 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 = out.split()[0] + + break + + 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]) + + 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 + + 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" + + label_str = "" + if self.label: + label_str = "-L %s" % self.label + + mkfs_cmd = "mkfs.%s -F %s %s %s -d %s" % \ + (self.fstype, extra_imagecmd, rootfs, label_str, rootfs_dir) + exec_native_cmd(pseudo + mkfs_cmd, native_sysroot) + + 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]) + + 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 + + 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) + + label_str = "" + if self.label: + label_str = "-L %s" % self.label + + mkfs_cmd = "mkfs.%s -b %d -r %s %s %s" % \ + (self.fstype, rootfs_size * 1024, rootfs_dir, label_str, rootfs) + exec_native_cmd(pseudo + mkfs_cmd, native_sysroot) + + def prepare_rootfs_vfat(self, rootfs, oe_builddir, rootfs_dir, + native_sysroot, pseudo): + """ + Prepare content for a vfat rootfs partition. + """ + du_cmd = "du -bks %s" % rootfs_dir + out = exec_cmd(du_cmd) + blocks = int(out.split()[0]) + + extra_blocks = self.get_extra_block_count(blocks) + if extra_blocks < self.extra_space: + extra_blocks = self.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. Apply + # sector count fix only when needed. + if blocks % 16 != 0: + blocks += (16 - (blocks % 16)) + + label_str = "-n boot" + if self.label: + label_str = "-n %s" % self.label + + dosfs_cmd = "mkdosfs %s -S 512 -C %s %d" % (label_str, rootfs, blocks) + 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) + + def prepare_rootfs_squashfs(self, rootfs, oe_builddir, rootfs_dir, + native_sysroot, pseudo): + """ + Prepare content for a squashfs rootfs partition. + """ + squashfs_cmd = "mksquashfs %s %s -noappend" % \ + (rootfs_dir, rootfs) + exec_native_cmd(pseudo + squashfs_cmd, native_sysroot) + + def prepare_empty_partition_ext(self, rootfs, oe_builddir, + native_sysroot): + """ + Prepare an empty ext2/3/4 partition. + """ + dd_cmd = "dd if=/dev/zero of=%s bs=1k seek=%d count=0" % \ + (rootfs, self.size) + exec_cmd(dd_cmd) + + extra_imagecmd = "-i 8192" + + label_str = "" + if self.label: + label_str = "-L %s" % self.label + + mkfs_cmd = "mkfs.%s -F %s %s %s" % \ + (self.fstype, extra_imagecmd, 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. + """ + dd_cmd = "dd if=/dev/zero of=%s bs=1k seek=%d count=0" % \ + (rootfs, self.size) + exec_cmd(dd_cmd) + + label_str = "" + if self.label: + label_str = "-L %s" % self.label + + mkfs_cmd = "mkfs.%s -b %d %s %s" % \ + (self.fstype, self.size * 1024, label_str, rootfs) + exec_native_cmd(mkfs_cmd, native_sysroot) + + def prepare_empty_partition_vfat(self, rootfs, oe_builddir, + native_sysroot): + """ + Prepare an empty vfat partition. + """ + blocks = self.size + + label_str = "-n boot" + if self.label: + label_str = "-n %s" % self.label + + dosfs_cmd = "mkdosfs %s -S 512 -C %s %d" % (label_str, rootfs, blocks) + exec_native_cmd(dosfs_cmd, native_sysroot) + + chmod_cmd = "chmod 644 %s" % rootfs + exec_cmd(chmod_cmd) + + 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) + + path = "%s/fs_%s.%s" % (cr_workdir, self.label, self.fstype) + os.path.isfile(path) and os.remove(path) + + # 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, path) + exec_native_cmd(squashfs_cmd, native_sysroot) + + os.rmdir(tmpdir) + + # get the rootfs size in the right units for kickstart (kB) + du_cmd = "du -Lbks %s" % path + out = exec_cmd(du_cmd) + fs_size = out.split()[0] + + self.size = fs_size + + def prepare_swap_partition(self, cr_workdir, oe_builddir, native_sysroot): + """ + Prepare a swap partition. + """ + path = "%s/fs.%s" % (cr_workdir, self.fstype) + + dd_cmd = "dd if=/dev/zero of=%s bs=1k seek=%d count=0" % \ + (path, 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()), path) + exec_native_cmd(mkswap_cmd, native_sysroot) + + +class Wic_Partition(FC4_Partition): + removedKeywords = FC4_Partition.removedKeywords + removedAttrs = FC4_Partition.removedAttrs + + def _getParser(self): + def overhead_cb(option, opt_str, value, parser): + if value < 1: + raise OptionValueError("Option %s: invalid value: %r" % \ + (option, value)) + setattr(parser.values, option.dest, value) + + parser = FC4_Partition._getParser(self) + + # The alignment value is given in kBytes. e.g., value 8 means that + # the partition is aligned to start from 8096 byte boundary. + parser.add_option("--align", type="int", action="store", dest="align", + default=None) + parser.add_option("--extoptions", type="string", action="store", dest="extopts", + default=None) + parser.add_option("--part-type", type="string", action="store", dest="part_type", + default=None) + # use specified source file to fill the partition + # and calculate partition size + parser.add_option("--source", type="string", action="store", + dest="source", default=None) + # comma-separated list of param=value pairs + parser.add_option("--sourceparams", type="string", action="store", + dest="sourceparams", default=None) + # use specified rootfs path to fill the partition + parser.add_option("--rootfs-dir", type="string", action="store", + dest="rootfs", default=None) + # wether to add the partition in the partition table + parser.add_option("--no-table", dest="no_table", action="store_true", + default=False) + # extra space beyond the partition size + parser.add_option("--extra-space", dest="extra_space", action="store", + type="size", nargs=1, default="10M") + parser.add_option("--overhead-factor", dest="overhead_factor", + action="callback", callback=overhead_cb, type="float", + nargs=1, default=1.3) + parser.add_option("--use-uuid", dest="use_uuid", action="store_true", + default=False) + parser.add_option("--uuid") + + return parser |