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#!/usr/bin/python3
import argparse
import os
import os.path
import re
import shutil
import subprocess
import sys
import tempfile
def main(source, version, verify_signature):
patch_dir = 'debian/patches-rt'
series_name = 'series'
old_series = set()
new_series = set()
try:
with open(os.path.join(patch_dir, series_name), 'r') as series_fh:
for line in series_fh:
name = line.strip()
if name != '' and name[0] != '#':
old_series.add(name)
except FileNotFoundError:
pass
with open(os.path.join(patch_dir, series_name), 'w') as series_fh:
# Add Origin to all patch headers.
def add_patch(name, source_patch, origin):
path = os.path.join(patch_dir, name)
try:
os.unlink(path)
except FileNotFoundError:
pass
with open(path, 'w') as patch:
in_header = True
for line in source_patch:
if in_header and re.match(r'^(\n|[^\w\s]|Index:)', line):
patch.write('Origin: %s\n' % origin)
if line != '\n':
patch.write('\n')
in_header = False
patch.write(line)
new_series.add(name)
if os.path.isdir(os.path.join(source, '.git')):
# Export rebased branch from stable-rt git as patch series
up_ver = re.sub(r'-rt\d+$', '', version)
env = os.environ.copy()
env['GIT_DIR'] = os.path.join(source, '.git')
env['DEBIAN_KERNEL_KEYRING'] = 'rt-signing-key.pgp'
if verify_signature:
# Validate tag signature
gpg_wrapper = os.path.join(os.getcwd(),
"debian/bin/git-tag-gpg-wrapper")
verify_proc = subprocess.Popen(
['git', '-c', 'gpg.program=%s' % gpg_wrapper,
'tag', '-v', 'v%s-rebase' % version],
env=env)
if verify_proc.wait():
raise RuntimeError("GPG tag verification failed")
args = ['git', 'format-patch',
'v%s..v%s-rebase' % (up_ver, version)]
with subprocess.Popen(args,
cwd=patch_dir,
env=env, stdout=subprocess.PIPE,
text=True) \
as format_proc:
for line in format_proc.stdout:
name = line.strip('\n')
with open(os.path.join(patch_dir, name)) as source_patch:
patch_from = source_patch.readline()
match = re.match(r'From ([0-9a-f]{40}) ', patch_from)
assert match
origin = ('https://git.kernel.org/cgit/linux/kernel/'
'git/rt/linux-stable-rt.git/commit?id=%s' %
match.group(1))
add_patch(name, source_patch, origin)
series_fh.write(line)
else:
# Get version and upstream version
if version is None:
match = re.search(r'(?:^|/)patches-(.+)\.tar\.[gx]z$', source)
assert match, 'no version specified or found in filename'
version = match.group(1)
match = re.match(r'^(\d+\.\d+)(?:\.\d+|-rc\d+)?-rt\d+$', version)
assert match, 'could not parse version string'
up_ver = match.group(1)
if verify_signature:
# Expect an accompanying signature, and validate it
source_sig = re.sub(r'.[gx]z$', '.sign', source)
unxz_proc = subprocess.Popen(['xzcat', source],
stdout=subprocess.PIPE)
verify_output = subprocess.check_output(
['gpgv', '--status-fd', '1',
'--keyring', 'debian/upstream/rt-signing-key.pgp',
'--ignore-time-conflict', source_sig, '-'],
stdin=unxz_proc.stdout,
text=True)
if unxz_proc.wait() or \
not re.search(r'^\[GNUPG:\]\s+VALIDSIG\s',
verify_output, re.MULTILINE):
sys.stderr.write(verify_output)
raise RuntimeError("GPG signature verification failed")
temp_dir = tempfile.mkdtemp(prefix='rt-genpatch', dir='debian')
try:
# Unpack tarball
subprocess.check_call(['tar', '-C', temp_dir, '-xaf', source])
source_dir = os.path.join(temp_dir, 'patches')
assert os.path.isdir(source_dir), \
'tarball does not contain patches directory'
# Copy patch series
origin = ('https://www.kernel.org/pub/linux/kernel/projects/'
'rt/%s/older/patches-%s.tar.xz' %
(up_ver, version))
with open(os.path.join(source_dir, 'series'), 'r') \
as source_series_fh:
for line in source_series_fh:
name = line.strip()
if name != '' and name[0] != '#':
with open(os.path.join(source_dir, name)) \
as source_patch:
add_patch(name, source_patch, origin)
series_fh.write(line)
finally:
shutil.rmtree(temp_dir)
for name in new_series:
if name in old_series:
old_series.remove(name)
else:
print('Added patch', os.path.join(patch_dir, name))
for name in old_series:
print('Obsoleted patch', os.path.join(patch_dir, name))
if __name__ == '__main__':
parser = argparse.ArgumentParser(
description='Generate or update the rt featureset patch series')
parser.add_argument(
'source', metavar='SOURCE', type=str,
help='tarball of patches or git repo containing the given RT-VERSION')
parser.add_argument(
'version', metavar='RT-VERSION', type=str, nargs='?',
help='rt kernel version (optional for tarballs)')
parser.add_argument(
'--verify-signature', action=argparse.BooleanOptionalAction,
default=True,
help='verify signature on tarball (detached in .sign file) or git tag')
args = parser.parse_args()
main(args.source, args.version, args.verify_signature)
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