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pmbootstrap/pmb/helpers/run.py
2017-05-26 22:08:45 +02:00

70 lines
2.2 KiB
Python

"""
Copyright 2017 Oliver Smith
This file is part of pmbootstrap.
pmbootstrap is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
pmbootstrap is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with pmbootstrap. If not, see <http://www.gnu.org/licenses/>.
"""
import subprocess
import logging
def core(args, cmd, log_message, log, return_stdout, check=True):
logging.debug(log_message)
"""
Run the command and write the output to the log.
:param check: raise an exception, when the command fails
"""
try:
ret = None
if log:
if return_stdout:
ret = subprocess.run(cmd, stdout=subprocess.PIPE,
check=check).stdout.decode('utf-8')
args.logfd.write(ret)
else:
subprocess.run(cmd, stdout=args.logfd, stderr=args.logfd,
check=check)
args.logfd.flush()
else:
logging.debug("*** output passed to pmbootstrap stdout, not" +
" to this log ***")
subprocess.run(cmd, check=check)
except subprocess.CalledProcessError as exc:
raise RuntimeError("Command failed: " + log_message) from exc
return ret
def user(args, cmd, log=True, working_dir=None, return_stdout=False,
check=True):
"""
:param working_dir: defaults to args.work
"""
if not working_dir:
working_dir = args.work
# TODO: maintain and check against a whitelist
return core(args, cmd, "% " + " ".join(cmd), log, return_stdout, check)
def root(args, cmd, log=True, working_dir=None, return_stdout=False,
check=True):
"""
:param working_dir: defaults to args.work
"""
cmd = ["sudo"] + cmd
return user(args, cmd, log, working_dir, return_stdout, check)