linux/debian/patches/features/all/rt/genpatch.py

95 lines
4.0 KiB
Python
Executable File

#!/usr/bin/python
import errno, os, os.path, re, shutil, subprocess, sys
def main(source_dir, version):
patch_dir = 'debian/patches'
rt_patch_dir = 'features/all/rt'
series_name = 'series-rt'
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 IOError, e:
if e.errno != errno.ENOENT:
raise
with open(os.path.join(patch_dir, series_name), 'w') as series_fh:
# Add directory prefix to all filenames.
# Add Origin to all patch headers.
def add_patch(name, source_patch, origin):
name = os.path.join(rt_patch_dir, name)
path = os.path.join(patch_dir, name)
try:
os.unlink(path)
except OSError, e:
if e.errno != errno.ENOENT:
raise
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)
series_fh.write(name)
series_fh.write('\n')
new_series.add(name)
if os.path.isdir(os.path.join(source_dir, '.git')):
# Export rebased branch from stable-rt git as patch series
up_ver = re.sub(r'-rt\d+$', '', version)
args = ['git', 'format-patch', 'v%s..v%s-rebase' % (up_ver, version)]
env = os.environ.copy()
env['GIT_DIR'] = os.path.join(source_dir, '.git')
child = subprocess.Popen(args,
cwd=os.path.join(patch_dir, rt_patch_dir),
env=env, stdout=subprocess.PIPE)
with child.stdout as pipe:
for line in pipe:
name = line.strip('\n')
with open(os.path.join(patch_dir, rt_patch_dir, name)) as \
source_patch:
patch_from = source_patch.readline()
match = re.match(r'From ([0-9a-f]{40}) ', patch_from)
assert match
origin = 'https://git.kernel.org/cgit/linux/kernel/git/rt/linux-stable-rt.git/commit?id=%s' % match.group(1)
add_patch(name, source_patch, origin)
else:
# Copy patch series
up_ver = re.sub(r'(\d+\.\d+)(?:\.\d+)?-rt\d+$', r'\1', version)
origin = 'https://www.kernel.org/pub/linux/kernel/projects/rt/%s/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)
else:
# Leave comments and empty lines unchanged
series_fh.write(line)
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 len(sys.argv) != 3:
print >>sys.stderr, 'Usage: %s DIR RT-VERSION' % sys.argv[0]
print >>sys.stderr, 'DIR is either a git repo or quilt directory containing the given RT-VERSION.'
sys.exit(2)
main(sys.argv[1], sys.argv[2])