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authorTom Zanussi <tom.zanussi@linux.intel.com>2014-08-08 15:53:52 -0500
committerRichard Purdie <richard.purdie@linuxfoundation.org>2014-08-11 10:52:19 +0100
commit598b120406dc1d2b7e377bd1ab6f0acbef034b22 (patch)
tree25b51e30cf73935cdf80bd2f9766def49ddbc808 /scripts/lib/wic/kickstart/custom_commands/partition.py
parentd39c76f24a50c9359840c0959fb50fc6da0960cd (diff)
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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. Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com>
Diffstat (limited to 'scripts/lib/wic/kickstart/custom_commands/partition.py')
-rw-r--r--scripts/lib/wic/kickstart/custom_commands/partition.py496
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
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--- /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