wic: Add OpenEmbedded-specific implementation

Reuses the mic/livecd infrastructure but heavily subclasses and
modifies it to adapt to the special needs of building images from
existing OpenEmbedded build artifacts.

In addition to the OE-specific mic objects and modifications to the
underlying infrastructure, this adds a mechanism to allow OE kickstart
files to be 'canned' and made available to users via the 'wic list
images' command.

Two initial OE kickstart files have been added as canned .wks files:
directdisk, which implements the same thing as the images created by
directdisk.bbclass, and mkefidisk, which can essentially be used as a
replacement for mkefidisk.sh.  Of course, since creation of these
images are now driven by .wks files rather than being hard-coded into
class files or scripts, they can be easily modified to generate
different variations on those images.  They also don't require root
priveleges, since they don't use mount to create the images.  They
don't however write to media like mkefidisk.sh does, but rather create
images that can be written onto media.

Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 351 insertions, 38 deletions

diff --git a/scripts/lib/mic/kickstart/custom_commands/partition.py b/scripts/lib/mic/kickstart/custom_commands/partition.py
index 59a87fb486..302cace234 100644
--- a/scripts/lib/mic/kickstart/custom_commands/partition.py
+++ b/scripts/lib/mic/kickstart/custom_commands/partition.py
@@ -1,57 +1,370 @@
-#!/usr/bin/python -tt
+# ex:ts=4:sw=4:sts=4:et
+# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
 #
-# Marko Saukko <marko.saukko@cybercom.com>
+# Copyright (c) 2013, Intel Corporation.
+# All rights reserved.
 #
-# Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+# 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 copyrighted material is made available to anyone wishing to use, modify,
-# copy, or redistribute it subject to the terms and conditions of the GNU
-# General Public License v.2. This program is distributed in the hope that it
-# will be useful, but WITHOUT ANY WARRANTY expressed or implied, including the
-# implied warranties of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-# See the GNU General Public License for more details.
+# 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>
 #
-# 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.
+
+import shutil
 
 from pykickstart.commands.partition import *
+from mic.utils.oe.misc import *
+
+from mic.kickstart.custom_commands import *
 
-class Mic_PartData(FC4_PartData):
-    removedKeywords = FC4_PartData.removedKeywords
-    removedAttrs = FC4_PartData.removedAttrs
+BOOTDD_EXTRA_SPACE = 16384
+
+class Wic_PartData(Mic_PartData):
+    removedKeywords = Mic_PartData.removedKeywords
+    removedAttrs = Mic_PartData.removedAttrs
 
     def __init__(self, *args, **kwargs):
-        FC4_PartData.__init__(self, *args, **kwargs)
+        Mic_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.source_file = ""
+        self.size = 0
 
     def _getArgsAsStr(self):
-        retval = FC4_PartData._getArgsAsStr(self)
+        retval = Mic_PartData._getArgsAsStr(self)
 
-        if self.align:
-            retval += " --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
 
         return retval
 
-class Mic_Partition(FC4_Partition):
-    removedKeywords = FC4_Partition.removedKeywords
-    removedAttrs = FC4_Partition.removedAttrs
+    def prepare(self, cr_workdir, oe_builddir, boot_type, rootfs_dir,
+                bootimg_dir, kernel_dir, native_sysroot):
+        """
+        Prepare content for individual partitions, depending on
+        partition command parameters.
+        """
+        if not self.source:
+            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
+
+        if self.source == "bootimg" and boot_type == "pcbios":
+            self.prepare_bootimg_pcbios(cr_workdir, oe_builddir, bootimg_dir,
+                                        kernel_dir, native_sysroot)
+        elif self.source == "bootimg" and boot_type == "efi":
+            self.prepare_bootimg_efi(cr_workdir, oe_builddir, bootimg_dir,
+                                     kernel_dir, native_sysroot)
+        elif self.source.startswith("rootfs"):
+            self.prepare_rootfs(cr_workdir, oe_builddir, rootfs_dir,
+                                native_sysroot)
+
+    def prepare_bootimg_pcbios(self, cr_workdir, oe_builddir, bootimg_dir,
+                               kernel_dir, native_sysroot):
+        """
+        Prepare content for a legacy bios boot partition.
+        """
+        staging_kernel_dir = kernel_dir
+        staging_data_dir = bootimg_dir
+
+        hdddir = "%s/hdd/boot" % cr_workdir
+
+        install_cmd = "install -m 0644 %s/bzImage %s/vmlinuz" \
+            % (staging_kernel_dir, hdddir)
+        tmp = exec_cmd(install_cmd)
+
+        install_cmd = "install -m 444 %s/syslinux/ldlinux.sys %s/ldlinux.sys" \
+            % (staging_data_dir, hdddir)
+        tmp = exec_cmd(install_cmd)
+
+        du_cmd = "du -bks %s" % hdddir
+        rc, out = exec_cmd(du_cmd)
+        blocks = int(out.split()[0])
+
+        blocks += BOOTDD_EXTRA_SPACE
+
+        # 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 image, created by mkdosfs
+        bootimg = "%s/boot.img" % cr_workdir
+
+        dosfs_cmd = "mkdosfs -n boot -S 512 -C %s %d" % (bootimg, blocks)
+        exec_native_cmd(dosfs_cmd, native_sysroot)
+
+        mcopy_cmd = "mcopy -i %s -s %s/* ::/" % (bootimg, hdddir)
+        exec_native_cmd(mcopy_cmd, native_sysroot)
+
+        syslinux_cmd = "syslinux %s" % bootimg
+        exec_native_cmd(syslinux_cmd, native_sysroot)
+
+        chmod_cmd = "chmod 644 %s" % bootimg
+        exec_cmd(chmod_cmd)
+
+        du_cmd = "du -Lbms %s" % bootimg
+        rc, out = exec_cmd(du_cmd)
+        bootimg_size = out.split()[0]
+
+        self.size = bootimg_size
+        self.source_file = bootimg
+
+    def prepare_bootimg_efi(self, cr_workdir, oe_builddir, bootimg_dir,
+                            kernel_dir, native_sysroot):
+        """
+        Prepare content for an EFI (grub) boot partition.
+        """
+        staging_kernel_dir = kernel_dir
+        staging_data_dir = bootimg_dir
+
+        hdddir = "%s/hdd/boot" % cr_workdir
+
+        install_cmd = "install -m 0644 %s/bzImage %s/vmlinuz" % \
+            (staging_kernel_dir, hdddir)
+        tmp = exec_cmd(install_cmd)
+
+        shutil.copyfile("%s/hdd/boot/EFI/BOOT/grub.cfg" % cr_workdir,
+                        "%s/grub.cfg" % cr_workdir)
+
+        cp_cmd = "cp %s/EFI/BOOT/* %s/EFI/BOOT" % (staging_data_dir, hdddir)
+        exec_cmd(cp_cmd, True)
+
+        shutil.move("%s/grub.cfg" % cr_workdir,
+                    "%s/hdd/boot/EFI/BOOT/grub.cfg" % cr_workdir)
+
+        du_cmd = "du -bks %s" % hdddir
+        rc, out = exec_cmd(du_cmd)
+        blocks = int(out.split()[0])
+
+        blocks += BOOTDD_EXTRA_SPACE
+
+        # 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 image, created by mkdosfs
+        bootimg = "%s/boot.img" % cr_workdir
+
+        dosfs_cmd = "mkdosfs -n efi -C %s %d" % (bootimg, blocks)
+        exec_native_cmd(dosfs_cmd, native_sysroot)
+
+        mcopy_cmd = "mcopy -i %s -s %s/* ::/" % (bootimg, hdddir)
+        exec_native_cmd(mcopy_cmd, native_sysroot)
+
+        chmod_cmd = "chmod 644 %s" % bootimg
+        exec_cmd(chmod_cmd)
+
+        du_cmd = "du -Lbms %s" % bootimg
+        rc, out = exec_cmd(du_cmd)
+        bootimg_size = out.split()[0]
+
+        self.size = bootimg_size
+        self.source_file = bootimg
+
+    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
+        rc, 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.
+        """
+        if self.fstype.startswith("ext"):
+            return self.prepare_rootfs_ext(cr_workdir, oe_builddir,
+                                           rootfs_dir, native_sysroot)
+        elif self.fstype.startswith("btrfs"):
+            return self.prepare_rootfs_btrfs(cr_workdir, oe_builddir,
+                                             rootfs_dir, native_sysroot)
+
+    def prepare_rootfs_ext(self, cr_workdir, oe_builddir, rootfs_dir,
+                           native_sysroot):
+        """
+        Prepare content for an ext2/3/4 rootfs partition.
+        """
+        populate_script = "%s/usr/bin/populate-extfs.sh" % native_sysroot
+        image_extra_space = 10240
+
+        image_rootfs = rootfs_dir
+        rootfs = "%s/rootfs.%s" % (cr_workdir, self.fstype)
+
+        du_cmd = "du -ks %s" % image_rootfs
+        rc, out = exec_cmd(du_cmd)
+        actual_rootfs_size = out.split()[0]
+
+        rootfs_size = int(actual_rootfs_size) + image_extra_space
+
+        dd_cmd = "dd if=/dev/zero of=%s bs=1024 seek=%d count=0 bs=1k" % \
+            (rootfs, rootfs_size)
+        rc, out = exec_cmd(dd_cmd)
+
+        extra_imagecmd = "-i 8192"
+
+        mkfs_cmd = "mkfs.%s -F %s %s" % (self.fstype, extra_imagecmd, rootfs)
+        rc, out = exec_native_cmd(mkfs_cmd, native_sysroot)
+
+        populate_cmd = populate_script + " " + image_rootfs + " " + rootfs
+        rc, out = exec_native_cmd(populate_cmd, native_sysroot)
+
+        # get the rootfs size in the right units for kickstart (Mb)
+        du_cmd = "du -Lbms %s" % rootfs
+        rc, 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):
+        """
+        Prepare content for a btrfs rootfs partition.
+
+        Currently handles ext2/3/4 and btrfs.
+        """
+        image_extra_space = 10240
+
+        image_rootfs = rootfs_dir
+        rootfs = "%s/rootfs.%s" % (cr_workdir, self.fstype)
+
+        du_cmd = "du -ks %s" % image_rootfs
+        rc, out = exec_cmd(du_cmd)
+        actual_rootfs_size = out.split()[0]
+
+        rootfs_size = int(actual_rootfs_size) + image_extra_space
+
+        dd_cmd = "dd if=/dev/zero of=%s bs=1024 seek=%d count=0 bs=1k" % \
+            (rootfs, rootfs_size)
+        rc, out = exec_cmd(dd_cmd)
+
+        mkfs_cmd = "mkfs.%s -b %d -r %s %s" % \
+            (self.fstype, rootfs_size * 1024, image_rootfs, rootfs)
+        rc, out = exec_native_cmd(mkfs_cmd, native_sysroot)
+
+        # get the rootfs size in the right units for kickstart (Mb)
+        du_cmd = "du -Lbms %s" % rootfs
+        rc, out = exec_cmd(du_cmd)
+        rootfs_size = out.split()[0]
+
+        self.size = rootfs_size
+        self.source_file = rootfs
+
+    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)
+
+    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)
+        rc, out = exec_cmd(dd_cmd)
+
+        extra_imagecmd = "-i 8192"
+
+        mkfs_cmd = "mkfs.%s -F %s %s" % (self.fstype, extra_imagecmd, fs)
+        rc, out = 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)
+        rc, out = exec_cmd(dd_cmd)
+
+        mkfs_cmd = "mkfs.%s -b %d %s" % (self.fstype, self.size * 1024, rootfs)
+        rc, out = exec_native_cmd(mkfs_cmd, native_sysroot)
+
+        mkfs_cmd = "mkfs.%s -F %s %s" % (self.fstype, extra_imagecmd, fs)
+        rc, out = exec_native_cmd(mkfs_cmd, native_sysroot)
+
+        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)
+        rc, out = 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)
+        rc, out = 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 = 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.
-        op.add_option("--align", type="int", action="store", dest="align",
-                      default=None)
-        op.add_option("--extoptions", type="string", action="store", dest="extopts",
-                      default=None)
-        op.add_option("--part-type", type="string", action="store", dest="part_type",
-                      default=None)
+        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)
         return op