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#!/usr/bin/python3
import json
import os.path
import pathlib
import re
import subprocess
import sys
from debian_linux.config import ConfigCoreDump
from debian_linux.debian import VersionLinux, BinaryPackage
from debian_linux.gencontrol import Gencontrol as Base, \
iter_flavours, PackagesBundle
from debian_linux.utils import Templates
class Gencontrol(Base):
def __init__(self, arch):
super(Gencontrol, self).__init__(
ConfigCoreDump(fp=open('debian/config.defines.dump', 'rb')),
Templates(['debian/signing_templates', 'debian/templates']))
image_binary_version = self.changelog[0].version.complete
config_entry = self.config[('version',)]
self.version = VersionLinux(config_entry['source'])
# Check config version matches changelog version
assert self.version.complete == re.sub(r'\+b\d+$', r'',
image_binary_version)
self.abiname = config_entry['abiname']
self.vars = {
'upstreamversion': self.version.linux_upstream,
'version': self.version.linux_version,
'source_basename': re.sub(r'-[\d.]+$', '',
self.changelog[0].source),
'source_upstream': self.version.upstream,
'abiname': self.abiname,
'imagebinaryversion': image_binary_version,
'imagesourceversion': self.version.complete,
'arch': arch,
}
self.vars['source_suffix'] = \
self.changelog[0].source[len(self.vars['source_basename']):]
self.vars['template'] = \
'linux-image%(source_suffix)s-%(arch)s-signed-template' % self.vars
self.package_dir = 'debian/%(template)s' % self.vars
self.template_top_dir = (self.package_dir
+ '/usr/share/code-signing/%(template)s'
% self.vars)
self.template_debian_dir = (self.template_top_dir
+ '/source-template/debian')
os.makedirs(self.template_debian_dir, exist_ok=True)
self.image_packages = []
# We need a separate base dir for now
self.bundles = {None: PackagesBundle(None, self.templates,
pathlib.Path(self.template_debian_dir))}
self.packages = self.bundle.packages
self.makefile = self.bundle.makefile
def do_main_setup(self, vars, makeflags, extra):
makeflags['VERSION'] = self.version.linux_version
makeflags['GENCONTROL_ARGS'] = (
'-v%(imagebinaryversion)s '
'-DBuilt-Using="%(source_basename)s%(source_suffix)s (= %(imagesourceversion)s)"' %
vars)
makeflags['PACKAGE_VERSION'] = vars['imagebinaryversion']
self.installer_packages = {}
if os.getenv('DEBIAN_KERNEL_DISABLE_INSTALLER'):
if self.changelog[0].distribution == 'UNRELEASED':
import warnings
warnings.warn('Disable installer modules on request '
'(DEBIAN_KERNEL_DISABLE_INSTALLER set)')
else:
raise RuntimeError(
'Unable to disable installer modules in release build '
'(DEBIAN_KERNEL_DISABLE_INSTALLER set)')
elif self.config.merge('packages').get('installer', True):
# Add udebs using kernel-wedge
kw_env = os.environ.copy()
kw_env['KW_DEFCONFIG_DIR'] = 'debian/installer'
kw_env['KW_CONFIG_DIR'] = 'debian/installer'
kw_proc = subprocess.Popen(
['kernel-wedge', 'gen-control', vars['abiname']],
stdout=subprocess.PIPE,
text=True,
env=kw_env)
udeb_packages = BinaryPackage.read_rfc822(kw_proc.stdout)
kw_proc.wait()
if kw_proc.returncode != 0:
raise RuntimeError('kernel-wedge exited with code %d' %
kw_proc.returncode)
for package in udeb_packages:
for arch in package['Architecture']:
if self.config.merge('build', arch) \
.get('signed-code', False):
self.installer_packages.setdefault(arch, []) \
.append(package)
def do_main_packages(self, vars, makeflags, extra):
# Assume that arch:all packages do not get binNMU'd
self.packages['source']['Build-Depends'].append(
'linux-support-%(abiname)s (= %(imagesourceversion)s)' % vars)
def do_main_recurse(self, vars, makeflags, extra):
# Each signed source package only covers a single architecture
self.do_arch(vars['arch'], vars.copy(),
makeflags.copy(), extra)
def do_extra(self):
pass
def do_arch_setup(self, vars, makeflags, arch, extra):
super(Gencontrol, self).do_main_setup(vars, makeflags, extra)
makeflags['ABINAME'] = vars['abiname']
def do_arch_packages(self, arch, vars, makeflags, extra):
udeb_packages = self.installer_packages.get(arch, [])
if udeb_packages:
makeflags_local = makeflags.copy()
makeflags_local['PACKAGE_NAMES'] = ' '.join(p['Package'] for p in udeb_packages)
for package in udeb_packages:
package.meta['rules-target'] = 'udeb'
self.bundle.add_packages(
udeb_packages,
(arch, 'real'),
makeflags_local, arch=arch,
)
def do_featureset_setup(self, vars, makeflags, arch, featureset, extra):
self.default_flavour = self.config.merge('base', arch, featureset) \
.get('default-flavour')
if self.default_flavour is not None:
if featureset != 'none':
raise RuntimeError("default-flavour set for %s %s,"
" but must only be set for featureset none"
% (arch, featureset))
if self.default_flavour \
not in iter_flavours(self.config, arch, featureset):
raise RuntimeError("default-flavour %s for %s %s does not exist"
% (self.default_flavour, arch, featureset))
self.quick_flavour = self.config.merge('base', arch, featureset) \
.get('quick-flavour')
def do_flavour_setup(self, vars, makeflags, arch, featureset, flavour,
extra):
super(Gencontrol, self).do_flavour_setup(vars, makeflags, arch,
featureset, flavour, extra)
config_description = self.config.merge('description', arch, featureset,
flavour)
config_image = self.config.merge('image', arch, featureset, flavour)
vars['flavour'] = vars['localversion'][1:]
vars['class'] = config_description['hardware']
vars['longclass'] = (config_description.get('hardware-long')
or vars['class'])
vars['image-stem'] = config_image.get('install-stem')
makeflags['IMAGE_INSTALL_STEM'] = vars['image-stem']
def do_flavour_packages(self, arch, featureset,
flavour, vars, makeflags, extra):
ruleid = (arch, featureset, flavour, 'real')
config_build = self.config.merge('build', arch, featureset, flavour)
if not config_build.get('signed-code', False):
return
# In a quick build, only build the quick flavour (if any).
if 'pkg.linux.quick' in \
os.environ.get('DEB_BUILD_PROFILES', '').split() \
and flavour != self.quick_flavour:
return
image_suffix = '%(abiname)s%(localversion)s' % vars
image_package_name = 'linux-image-%s-unsigned' % image_suffix
self.image_packages.append((image_suffix, image_package_name))
self.packages['source']['Build-Depends'].append(
image_package_name
+ ' (= %(imagebinaryversion)s) [%(arch)s]' % vars)
packages_own = (
self.bundle.add('image',
ruleid, makeflags, vars, arch=arch)
)
if self.config.merge('packages').get('meta', True):
packages_meta = (
self.bundle.add('image.meta', ruleid, makeflags, vars, arch=arch)
)
assert len(packages_meta) == 1
packages_meta += (
self.bundle.add('headers.meta', ruleid, makeflags, vars, arch=arch)
)
assert len(packages_meta) == 2
# Don't pretend to support build-profiles
for package in packages_meta:
del package['Build-Profiles']
if flavour == self.default_flavour \
and not self.vars['source_suffix']:
packages_meta[0].setdefault('Provides') \
.append('linux-image-generic')
packages_meta[1].setdefault('Provides') \
.append('linux-headers-generic')
packages_own.extend(packages_meta)
def write(self):
self.bundle.extract_makefile()
self.write_changelog()
self.write_control(name=(self.template_debian_dir + '/control'))
self.write_makefile(name=(self.template_debian_dir + '/rules.gen'))
self.write_files_json()
self.write_source_lintian_overrides()
def write_changelog(self):
# Copy the linux changelog, but:
# * Change the source package name and version
# * Insert a line to refer to refer to the linux source version
vars = self.vars.copy()
vars['source'] = self.changelog[0].source
vars['distribution'] = self.changelog[0].distribution
vars['urgency'] = self.changelog[0].urgency
vars['signedsourceversion'] = \
re.sub(r'\+b(\d+)$', r'.b\1',
re.sub(r'-', r'+', vars['imagebinaryversion']))
with open(self.template_debian_dir + '/changelog', 'w',
encoding='utf-8') as f:
f.write(self.substitute('''\
linux-signed@source_suffix@-@arch@ (@signedsourceversion@) @distribution@; urgency=@urgency@
* Sign kernel from @source@ @imagebinaryversion@
''',
vars))
with open('debian/changelog', 'r', encoding='utf-8') \
as changelog_in:
# Ignore first two header lines
changelog_in.readline()
changelog_in.readline()
for d in changelog_in.read():
f.write(d)
def write_files_json(self):
all_files = {'packages': {}}
for image_suffix, image_package_name in self.image_packages:
package_files = []
package_files.append({'sig_type': 'efi',
'file': 'boot/vmlinuz-%s' % image_suffix})
all_files['packages'][image_package_name] = {
'trusted_certs': [],
'files': package_files
}
with open(self.template_top_dir + '/files.json', 'w') as f:
json.dump(all_files, f)
def write_source_lintian_overrides(self):
os.makedirs(os.path.join(self.template_debian_dir, 'source'),
exist_ok=True)
with open(os.path.join(self.template_debian_dir,
'source/lintian-overrides'), 'w') as f:
f.write(self.substitute(self.templates.get('source.lintian-overrides'),
self.vars))
if __name__ == '__main__':
Gencontrol(sys.argv[1])()
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