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#!/usr/bin/python -tt
#
# Copyright 2011 Intel, Inc.
#
# 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.
#
# 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. Any Red Hat
# trademarks that are incorporated in the source code or documentation are not
# subject to the GNU General Public License and may only be used or replicated
# with the express permission of Red Hat, Inc.
#
import os
import subprocess
import shutil
import re
import tempfile
from mic import configmgr, pluginmgr, chroot, msger
from mic.utils import misc, fs_related, errors
from mic.utils.partitionedfs import PartitionedMount
import mic.imager.raw as raw
from mic.pluginbase import ImagerPlugin
class RawPlugin(ImagerPlugin):
name = 'raw'
@classmethod
def do_create(self, subcmd, opts, *args):
"""${cmd_name}: create raw image
${cmd_usage}
${cmd_option_list}
"""
if not args:
raise errors.Usage("More arguments needed")
if len(args) == 1:
ksconf = args[0]
else:
raise errors.Usage("Extra arguments given")
cfgmgr = configmgr.getConfigMgr()
creatoropts = cfgmgr.create
cfgmgr.setProperty("ksconf", ksconf)
# try to find the pkgmgr
pkgmgr = None
plgmgr = pluginmgr.PluginMgr()
for (key, pcls) in plgmgr.get_plugins('backend').iteritems():
if key == creatoropts['pkgmgr']:
pkgmgr = pcls
break
if not pkgmgr:
raise errors.CreatorError("Can't find backend %s" % pkgmgr)
creator = raw.RawImageCreator(creatoropts, pkgmgr)
try:
creator.check_depend_tools()
creator.mount(None, creatoropts["cachedir"])
creator.install()
creator.configure(creatoropts["repomd"])
creator.unmount()
creator.package(creatoropts["outdir"])
outimage = creator.outimage
creator.print_outimage_info()
outimage = creator.outimage
except errors.CreatorError, e:
raise errors.CreatorError("failed to create image : %s" % e)
finally:
creator.cleanup()
msger.info("Finished.")
return 0
@classmethod
def do_chroot(cls, target):
img = target
imgsize = misc.get_file_size(img) * 1024L * 1024L
partedcmd = fs_related.find_binary_path("parted")
disk = fs_related.SparseLoopbackDisk(img, imgsize)
imgmnt = misc.mkdtemp()
imgloop = PartitionedMount({'/dev/sdb':disk}, imgmnt, skipformat = True)
img_fstype = "ext3"
# Check the partitions from raw disk.
root_mounted = False
partition_mounts = 0
for line in subprocess.Popen([partedcmd,"-s",img,"unit","B","print"],
stdout=subprocess.PIPE, stderr=subprocess.STDOUT)\
.communicate()[0]\
.strip()\
.splitlines():
line = line.strip()
# Lines that start with number are the partitions,
# because parted can be translated we can't refer to any text lines.
if not line or not line[0].isdigit():
continue
# Some vars have extra , as list seperator.
line = line.replace(",","")
# Example of parted output lines that are handled:
# Number Start End Size Type File system Flags
# 1 512B 3400000511B 3400000000B primary
# 2 3400531968B 3656384511B 255852544B primary linux-swap(v1)
# 3 3656384512B 3720347647B 63963136B primary fat16 boot, lba
partition_info = re.split("\s+",line)
size = partition_info[3].split("B")[0]
if len(partition_info) < 6 or partition_info[5] in ["boot"]:
# No filesystem can be found from partition line. Assuming
# btrfs, because that is the only MeeGo fs that parted does
# not recognize properly.
# TODO: Can we make better assumption?
fstype = "btrfs"
elif partition_info[5] in ["ext2","ext3","ext4","btrfs"]:
fstype = partition_info[5]
elif partition_info[5] in ["fat16","fat32"]:
fstype = "vfat"
elif "swap" in partition_info[5]:
fstype = "swap"
else:
raise errors.CreatorError("Could not recognize partition fs type '%s'." % partition_info[5])
if not root_mounted and fstype in ["ext2","ext3","ext4","btrfs"]:
# TODO: Check that this is actually the valid root partition from /etc/fstab
mountpoint = "/"
root_mounted = True
elif fstype == "swap":
mountpoint = "swap"
else:
# TODO: Assing better mount points for the rest of the partitions.
partition_mounts += 1
mountpoint = "/media/partition_%d" % partition_mounts
if "boot" in partition_info:
boot = True
else:
boot = False
msger.verbose("Size: %s Bytes, fstype: %s, mountpoint: %s, boot: %s" % (size, fstype, mountpoint, boot))
# TODO: add_partition should take bytes as size parameter.
imgloop.add_partition((int)(size)/1024/1024, "/dev/sdb", mountpoint, fstype = fstype, boot = boot)
try:
imgloop.mount()
except errors.MountError, e:
imgloop.cleanup()
raise errors.CreatorError("Failed to loopback mount '%s' : %s" % (img, e))
try:
chroot.chroot(imgmnt, None, "/bin/env HOME=/root /bin/bash")
except:
raise errors.CreatorError("Failed to chroot to %s." %img)
finally:
chroot.cleanup_after_chroot("img", imgloop, None, imgmnt)
@classmethod
def do_unpack(cls, srcimg):
srcimgsize = (misc.get_file_size(srcimg)) * 1024L * 1024L
srcmnt = misc.mkdtemp("srcmnt")
disk = fs_related.SparseLoopbackDisk(srcimg, srcimgsize)
srcloop = PartitionedMount({'/dev/sdb':disk}, srcmnt, skipformat = True)
srcloop.add_partition(srcimgsize/1024/1024, "/dev/sdb", "/", "ext3", boot=False)
try:
srcloop.mount()
except errors.MountError, e:
srcloop.cleanup()
raise errors.CreatorError("Failed to loopback mount '%s' : %s" %
(srcimg, e))
image = os.path.join(tempfile.mkdtemp(dir = "/var/tmp", prefix = "tmp"), "target.img")
args = ['dd', "if=%s" % srcloop.partitions[0]['device'], "of=%s" % image]
msger.info("`dd` image ...")
rc = subprocess.call(args)
srcloop.cleanup()
shutil.rmtree(srcmnt, ignore_errors = True)
if rc != 0:
raise errors.CreatorError("Failed to dd")
else:
return image
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