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-rwxr-xr-xdebian/bin/genpatch-rt152
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:])