#
# __init__.py
#
# Copyright (C) 2010 Red Hat, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# 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, see .
#
# Red Hat Author(s): Martin Gracik
# David Cantrell
# Will Woods
# set up logging
import logging
logger = logging.getLogger("pylorax")
logger.addHandler(logging.NullHandler())
import sys
import os
import ConfigParser
import tempfile
import locale
from subprocess import CalledProcessError
import selinux
from base import BaseLoraxClass, DataHolder
import output
import yum
import ltmpl
import imgutils
from sysutils import *
from rpmUtils.arch import getBaseArch
from treebuilder import RuntimeBuilder, TreeBuilder
from buildstamp import BuildStamp
from treeinfo import TreeInfo
from discinfo import DiscInfo
from executils import runcmd, runcmd_output
class ArchData(DataHolder):
lib64_arches = ("x86_64", "ppc64", "sparc64", "s390x", "ia64")
bcj_arch = dict(i386="x86", x86_64="x86",
ppc="powerpc", ppc64="powerpc",
sparc="sparc", sparc64="sparc",
arm="arm", armhfp="arm")
def __init__(self, buildarch):
self.buildarch = buildarch
self.basearch = getBaseArch(buildarch)
self.libdir = "lib64" if self.basearch in self.lib64_arches else "lib"
self.bcj = self.bcj_arch.get(self.basearch)
class Lorax(BaseLoraxClass):
def __init__(self):
BaseLoraxClass.__init__(self)
self._configured = False
# set locale to C
locale.setlocale(locale.LC_ALL, 'C')
def configure(self, conf_file="/etc/lorax/lorax.conf"):
self.conf = ConfigParser.SafeConfigParser()
# set defaults
self.conf.add_section("lorax")
self.conf.set("lorax", "debug", "1")
self.conf.set("lorax", "sharedir", "/usr/share/lorax")
self.conf.add_section("output")
self.conf.set("output", "colors", "1")
self.conf.set("output", "encoding", "utf-8")
self.conf.set("output", "ignorelist", "/usr/share/lorax/ignorelist")
self.conf.add_section("templates")
self.conf.set("templates", "ramdisk", "ramdisk.ltmpl")
self.conf.add_section("yum")
self.conf.set("yum", "skipbroken", "0")
self.conf.add_section("compression")
self.conf.set("compression", "type", "xz")
self.conf.set("compression", "args", "")
self.conf.set("compression", "bcj", "on")
# read the config file
if os.path.isfile(conf_file):
self.conf.read(conf_file)
# set up the output
self.debug = self.conf.getboolean("lorax", "debug")
output_level = output.DEBUG if self.debug else output.INFO
colors = self.conf.getboolean("output", "colors")
encoding = self.conf.get("output", "encoding")
self.output.basic_config(output_level=output_level,
colors=colors, encoding=encoding)
ignorelist = self.conf.get("output", "ignorelist")
if os.path.isfile(ignorelist):
with open(ignorelist, "r") as fobj:
for line in fobj:
line = line.strip()
if line and not line.startswith("#"):
self.output.ignore(line)
# cron does not have sbin in PATH,
# so we have to add it ourselves
os.environ["PATH"] = "{0}:/sbin:/usr/sbin".format(os.environ["PATH"])
self._configured = True
def init_stream_logging(self):
sh = logging.StreamHandler()
sh.setLevel(logging.INFO)
logger.addHandler(sh)
def init_file_logging(self, logdir, logname="pylorax.log"):
fh = logging.FileHandler(filename=joinpaths(logdir, logname), mode="w")
fh.setLevel(logging.DEBUG)
logger.addHandler(fh)
def run(self, ybo, product, version, release, variant="", bugurl="",
isfinal=False, workdir=None, outputdir=None, buildarch=None, volid=None,
domacboot=True, doupgrade=True, remove_temp=False):
assert self._configured
if domacboot:
try:
runcmd(["rpm", "-q", "hfsplus-tools"])
except CalledProcessError:
logger.critical("you need to install hfsplus-tools to create mac images")
sys.exit(1)
# set up work directory
self.workdir = workdir or tempfile.mkdtemp(prefix="pylorax.work.")
if not os.path.isdir(self.workdir):
os.makedirs(self.workdir)
# set up log directory
logdir = '/var/log/lorax'
if not os.path.isdir(logdir):
os.makedirs(logdir)
self.init_stream_logging()
self.init_file_logging(logdir)
logger.debug("using work directory {0.workdir}".format(self))
logger.debug("using log directory {0}".format(logdir))
# set up output directory
self.outputdir = outputdir or tempfile.mkdtemp(prefix="pylorax.out.")
if not os.path.isdir(self.outputdir):
os.makedirs(self.outputdir)
logger.debug("using output directory {0.outputdir}".format(self))
# do we have root privileges?
logger.info("checking for root privileges")
if not os.geteuid() == 0:
logger.critical("no root privileges")
sys.exit(1)
# is selinux disabled?
# With selinux in enforcing mode the rpcbind package required for
# dracut nfs module, which is in turn required by anaconda module,
# will not get installed, because it's preinstall scriptlet fails,
# resulting in an incomplete initial ramdisk image.
# The reason is that the scriptlet runs tools from the shadow-utils
# package in chroot, particularly groupadd and useradd to add the
# required rpc group and rpc user. This operation fails, because
# the selinux context on files in the chroot, that the shadow-utils
# tools need to access (/etc/group, /etc/passwd, /etc/shadow etc.),
# is wrong and selinux therefore disallows access to these files.
logger.info("checking the selinux mode")
if selinux.is_selinux_enabled() and selinux.security_getenforce():
logger.critical("selinux must be disabled or in Permissive mode")
sys.exit(1)
# do we have a proper yum base object?
logger.info("checking yum base object")
if not isinstance(ybo, yum.YumBase):
logger.critical("no yum base object")
sys.exit(1)
self.inroot = ybo.conf.installroot
logger.debug("using install root: {0}".format(self.inroot))
if not buildarch:
buildarch = get_buildarch(ybo)
logger.info("setting up build architecture")
self.arch = ArchData(buildarch)
for attr in ('buildarch', 'basearch', 'libdir'):
logger.debug("self.arch.%s = %s", attr, getattr(self.arch,attr))
logger.info("setting up build parameters")
product = DataHolder(name=product, version=version, release=release,
variant=variant, bugurl=bugurl, isfinal=isfinal)
self.product = product
logger.debug("product data: %s" % product)
# NOTE: if you change isolabel, you need to change pungi to match, or
# the pungi images won't boot.
isolabel = volid or "{0.name} {0.version} {1.basearch}".format(self.product,
self.arch)
if len(isolabel) > 32:
logger.fatal("the volume id cannot be longer than 32 characters")
sys.exit(1)
templatedir = self.conf.get("lorax", "sharedir")
# NOTE: rb.root = ybo.conf.installroot (== self.inroot)
rb = RuntimeBuilder(product=self.product, arch=self.arch,
yum=ybo, templatedir=templatedir)
logger.info("installing runtime packages")
rb.yum.conf.skip_broken = self.conf.getboolean("yum", "skipbroken")
rb.install()
# write .buildstamp
buildstamp = BuildStamp(self.product.name, self.product.version,
self.product.bugurl, self.product.isfinal, self.arch.buildarch)
buildstamp.write(joinpaths(self.inroot, ".buildstamp"))
if self.debug:
rb.writepkglists(joinpaths(logdir, "pkglists"))
rb.writepkgsizes(joinpaths(logdir, "original-pkgsizes.txt"))
logger.info("doing post-install configuration")
rb.postinstall()
# write .discinfo
discinfo = DiscInfo(self.product.release, self.arch.basearch)
discinfo.write(joinpaths(self.outputdir, ".discinfo"))
logger.info("backing up installroot")
installroot = joinpaths(self.workdir, "installroot")
linktree(self.inroot, installroot)
logger.info("generating kernel module metadata")
rb.generate_module_data()
logger.info("cleaning unneeded files")
rb.cleanup()
if self.debug:
rb.writepkgsizes(joinpaths(logdir, "final-pkgsizes.txt"))
logger.info("creating the runtime image")
runtime = "images/install.img"
compression = self.conf.get("compression", "type")
compressargs = self.conf.get("compression", "args").split()
if self.conf.getboolean("compression", "bcj"):
if self.arch.bcj:
compressargs += ["-Xbcj", self.arch.bcj]
else:
logger.info("no BCJ filter for arch %s", self.arch.basearch)
rb.create_runtime(joinpaths(installroot,runtime),
compression=compression, compressargs=compressargs)
logger.info("preparing to build output tree and boot images")
treebuilder = TreeBuilder(product=self.product, arch=self.arch,
inroot=installroot, outroot=self.outputdir,
runtime=runtime, isolabel=isolabel,
domacboot=domacboot, templatedir=templatedir)
logger.info("rebuilding initramfs images")
dracut_args = ["--xz", "--install", "/.buildstamp"]
anaconda_args = dracut_args + ["--add", "anaconda pollcdrom"]
treebuilder.rebuild_initrds(add_args=anaconda_args)
if doupgrade:
# Build upgrade.img. It'd be nice if these could coexist in the same
# image, but that would increase the size of the anaconda initramfs,
# which worries some people (esp. PPC tftpboot). So they're separate.
try:
# If possible, use the 'fedup' plymouth theme
themes = runcmd_output(['plymouth-set-default-theme', '--list'],
root=installroot)
if 'fedup' in themes.splitlines():
os.environ['PLYMOUTH_THEME_NAME'] = 'fedup'
except RuntimeError:
pass
upgrade_args = dracut_args + ["--add", "system-upgrade"]
treebuilder.rebuild_initrds(add_args=upgrade_args, prefix="upgrade")
logger.info("populating output tree and building boot images")
treebuilder.build()
# write .treeinfo file and we're done
treeinfo = TreeInfo(self.product.name, self.product.version,
self.product.variant, self.arch.basearch)
for section, data in treebuilder.treeinfo_data.items():
treeinfo.add_section(section, data)
treeinfo.write(joinpaths(self.outputdir, ".treeinfo"))
# cleanup
if remove_temp:
remove(self.workdir)
def get_buildarch(ybo):
# get architecture of the available anaconda package
buildarch = None
for anaconda in ybo.doPackageLists(patterns=["anaconda"]).available:
if anaconda.arch != "src":
buildarch = anaconda.arch
break
if not buildarch:
logger.critical("no anaconda package in the repository")
sys.exit(1)
return buildarch