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# SPDX-License-Identifier: GPL-2.0+
#
# Copyright 2020 Google LLC
#
"""Handles the main control logic of patman
This module provides various functions called by the main program to implement
the features of patman.
"""
import os
import sys
from patman import checkpatch
from patman import gitutil
from patman import patchstream
from patman import terminal
def setup():
"""Do required setup before doing anything"""
gitutil.setup()
def prepare_patches(col, branch, count, start, end, ignore_binary, signoff):
"""Figure out what patches to generate, then generate them
The patch files are written to the current directory, e.g. 0001_xxx.patch
0002_yyy.patch
Args:
col (terminal.Color): Colour output object
branch (str): Branch to create patches from (None = current)
count (int): Number of patches to produce, or -1 to produce patches for
the current branch back to the upstream commit
start (int): Start partch to use (0=first / top of branch)
end (int): End patch to use (0=last one in series, 1=one before that,
etc.)
ignore_binary (bool): Don't generate patches for binary files
Returns:
Tuple:
Series object for this series (set of patches)
Filename of the cover letter as a string (None if none)
patch_files: List of patch filenames, each a string, e.g.
['0001_xxx.patch', '0002_yyy.patch']
"""
if count == -1:
# Work out how many patches to send if we can
count = (gitutil.count_commits_to_branch(branch) - start)
if not count:
str = 'No commits found to process - please use -c flag, or run:\n' \
' git branch --set-upstream-to remote/branch'
sys.exit(col.build(col.RED, str))
# Read the metadata from the commits
to_do = count - end
series = patchstream.get_metadata(branch, start, to_do)
cover_fname, patch_files = gitutil.create_patches(
branch, start, to_do, ignore_binary, series, signoff)
# Fix up the patch files to our liking, and insert the cover letter
patchstream.fix_patches(series, patch_files)
if cover_fname and series.get('cover'):
patchstream.insert_cover_letter(cover_fname, series, to_do)
return series, cover_fname, patch_files
def check_patches(series, patch_files, run_checkpatch, verbose, use_tree):
"""Run some checks on a set of patches
This santiy-checks the patman tags like Series-version and runs the patches
through checkpatch
Args:
series (Series): Series object for this series (set of patches)
patch_files (list): List of patch filenames, each a string, e.g.
['0001_xxx.patch', '0002_yyy.patch']
run_checkpatch (bool): True to run checkpatch.pl
verbose (bool): True to print out every line of the checkpatch output as
it is parsed
use_tree (bool): If False we'll pass '--no-tree' to checkpatch.
Returns:
bool: True if the patches had no errors, False if they did
"""
# Do a few checks on the series
series.DoChecks()
# Check the patches, and run them through 'git am' just to be sure
if run_checkpatch:
ok = checkpatch.check_patches(verbose, patch_files, use_tree)
else:
ok = True
return ok
def email_patches(col, series, cover_fname, patch_files, process_tags, its_a_go,
ignore_bad_tags, add_maintainers, get_maintainer_script, limit,
dry_run, in_reply_to, thread, smtp_server):
"""Email patches to the recipients
This emails out the patches and cover letter using 'git send-email'. Each
patch is copied to recipients identified by the patch tag and output from
the get_maintainer.pl script. The cover letter is copied to all recipients
of any patch.
To make this work a CC file is created holding the recipients for each patch
and the cover letter. See the main program 'cc_cmd' for this logic.
Args:
col (terminal.Color): Colour output object
series (Series): Series object for this series (set of patches)
cover_fname (str): Filename of the cover letter as a string (None if
none)
patch_files (list): List of patch filenames, each a string, e.g.
['0001_xxx.patch', '0002_yyy.patch']
process_tags (bool): True to process subject tags in each patch, e.g.
for 'dm: spi: Add SPI support' this would be 'dm' and 'spi'. The
tags are looked up in the configured sendemail.aliasesfile and also
in ~/.patman (see README)
its_a_go (bool): True if we are going to actually send the patches,
False if the patches have errors and will not be sent unless
@ignore_errors
ignore_bad_tags (bool): True to just print a warning for unknown tags,
False to halt with an error
add_maintainers (bool): Run the get_maintainer.pl script for each patch
get_maintainer_script (str): The script used to retrieve which
maintainers to cc
limit (int): Limit on the number of people that can be cc'd on a single
patch or the cover letter (None if no limit)
dry_run (bool): Don't actually email the patches, just print out what
would be sent
in_reply_to (str): If not None we'll pass this to git as --in-reply-to.
Should be a message ID that this is in reply to.
thread (bool): True to add --thread to git send-email (make all patches
reply to cover-letter or first patch in series)
smtp_server (str): SMTP server to use to send patches (None for default)
"""
cc_file = series.MakeCcFile(process_tags, cover_fname, not ignore_bad_tags,
add_maintainers, limit, get_maintainer_script)
# Email the patches out (giving the user time to check / cancel)
cmd = ''
if its_a_go:
cmd = gitutil.email_patches(
series, cover_fname, patch_files, dry_run, not ignore_bad_tags,
cc_file, in_reply_to=in_reply_to, thread=thread,
smtp_server=smtp_server)
else:
print(col.build(col.RED, "Not sending emails due to errors/warnings"))
# For a dry run, just show our actions as a sanity check
if dry_run:
series.ShowActions(patch_files, cmd, process_tags)
if not its_a_go:
print(col.build(col.RED, "Email would not be sent"))
os.remove(cc_file)
def send(args):
"""Create, check and send patches by email
Args:
args (argparse.Namespace): Arguments to patman
"""
setup()
col = terminal.Color()
series, cover_fname, patch_files = prepare_patches(
col, args.branch, args.count, args.start, args.end,
args.ignore_binary, args.add_signoff)
ok = check_patches(series, patch_files, args.check_patch,
args.verbose, args.check_patch_use_tree)
ok = ok and gitutil.check_suppress_cc_config()
its_a_go = ok or args.ignore_errors
email_patches(
col, series, cover_fname, patch_files, args.process_tags,
its_a_go, args.ignore_bad_tags, args.add_maintainers,
args.get_maintainer_script, args.limit, args.dry_run,
args.in_reply_to, args.thread, args.smtp_server)
def patchwork_status(branch, count, start, end, dest_branch, force,
show_comments, url):
"""Check the status of patches in patchwork
This finds the series in patchwork using the Series-link tag, checks for new
comments and review tags, displays then and creates a new branch with the
review tags.
Args:
branch (str): Branch to create patches from (None = current)
count (int): Number of patches to produce, or -1 to produce patches for
the current branch back to the upstream commit
start (int): Start partch to use (0=first / top of branch)
end (int): End patch to use (0=last one in series, 1=one before that,
etc.)
dest_branch (str): Name of new branch to create with the updated tags
(None to not create a branch)
force (bool): With dest_branch, force overwriting an existing branch
show_comments (bool): True to display snippets from the comments
provided by reviewers
url (str): URL of patchwork server, e.g. 'https://patchwork.ozlabs.org'.
This is ignored if the series provides a Series-patchwork-url tag.
Raises:
ValueError: if the branch has no Series-link value
"""
if count == -1:
# Work out how many patches to send if we can
count = (gitutil.count_commits_to_branch(branch) - start)
series = patchstream.get_metadata(branch, start, count - end)
warnings = 0
for cmt in series.commits:
if cmt.warn:
print('%d warnings for %s:' % (len(cmt.warn), cmt.hash))
for warn in cmt.warn:
print('\t', warn)
warnings += 1
print
if warnings:
raise ValueError('Please fix warnings before running status')
links = series.get('links')
if not links:
raise ValueError("Branch has no Series-links value")
# Find the link without a version number (we don't support versions yet)
found = [link for link in links.split() if not ':' in link]
if not found:
raise ValueError('Series-links has no current version (without :)')
# Allow the series to override the URL
if 'patchwork_url' in series:
url = series.patchwork_url
# Import this here to avoid failing on other commands if the dependencies
# are not present
from patman import status
status.check_patchwork_status(series, found[0], branch, dest_branch, force,
show_comments, url)