diff options
Diffstat (limited to 'debian/bin/genpatch-rt')
| -rwxr-xr-x | debian/bin/genpatch-rt | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/debian/bin/genpatch-rt b/debian/bin/genpatch-rt new file mode 100755 index 000000000..e61b5f242 --- /dev/null +++ b/debian/bin/genpatch-rt @@ -0,0 +1,152 @@ +#!/usr/bin/python3 + +import codecs +import io +import os +import os.path +import re +import shutil +import subprocess +import sys +import tempfile + + +def main(source, version=None): + 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+$', '', version) + env = os.environ.copy() + env['GIT_DIR'] = os.path.join(source, '.git') + env['DEBIAN_KERNEL_KEYRING'] = 'rt-signing-key.pgp' + + # Validate tag signature + gpg_wrapper = os.path.join(os.getcwd(), + "debian/bin/git-tag-gpg-wrapper") + verify_proc = subprocess.Popen( + ['git', '-c', 'gpg.program=%s' % gpg_wrapper, + 'tag', '-v', 'v%s-rebase' % version], + env=env) + if verify_proc.wait(): + raise RuntimeError("GPG tag verification failed") + + args = ['git', 'format-patch', + 'v%s..v%s-rebase' % (up_ver, version)] + format_proc = subprocess.Popen(args, + cwd=patch_dir, + env=env, stdout=subprocess.PIPE) + with io.open(format_proc.stdout.fileno(), encoding='utf-8') \ + as pipe: + for line in pipe: + name = line.strip('\n') + with open(os.path.join(patch_dir, name)) as source_patch: + patch_from = source_patch.readline() + match = re.match(r'From ([0-9a-f]{40}) ', patch_from) + assert match + origin = ('https://git.kernel.org/cgit/linux/kernel/' + 'git/rt/linux-stable-rt.git/commit?id=%s' % + match.group(1)) + add_patch(name, source_patch, origin) + series_fh.write(line) + + else: + # Get version and upstream version + if version is None: + match = re.search(r'(?:^|/)patches-(.+)\.tar\.[gx]z$', 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+$', version) + assert match, 'could not parse version string' + up_ver = match.group(1) + + # Expect an accompanying signature, and validate it + source_sig = re.sub(r'.[gx]z$', '.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) + if unxz_proc.wait() or \ + not re.search(r'^\[GNUPG:\]\s+VALIDSIG\s', + codecs.decode(verify_output), + re.MULTILINE): + os.write(2, verify_output) # bytes not str! + 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__': + if not (1 <= len(sys.argv) <= 3): + print('Usage: %s {TAR [RT-VERSION] | REPO RT-VERSION}' % sys.argv[0], + file=sys.stderr) + print('TAR is a tarball of patches.', file=sys.stderr) + print('REPO is a git repo containing the given RT-VERSION.', + file=sys.stderr) + sys.exit(2) + main(*sys.argv[1:]) |