pmbootstrap/pmb/chroot/user.py

59 lines
2.3 KiB
Python

"""
Copyright 2018 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 pmb.chroot.root
import pmb.helpers.run
def user(args, cmd, suffix="native", working_dir="/", log=True,
auto_init=True, return_stdout=False, check=True, env={}):
"""
Run a command inside a chroot as "user". We always use the BusyBox
implementation of 'su', because other implementations may override the PATH
environment variable (#1071).
:param cmd: command as list, e.g. ["echo", "string with spaces"]
:param suffix: of the chroot to execute code in
:param working_dir: path inside chroot where the command should run
:param log: when set to true, redirect all output to the logfile
:param auto_init: automatically initialize the chroot
:param return_stdout: write stdout to a buffer and return it as string when
the command is through
:param check: raise an exception, when the command fails
:param env: dict of environment variables to be passed to the command, e.g.
{"JOBS": "5"}
:returns: * stdout when return_stdout is True
* None otherwise
"""
flat_cmd = pmb.helpers.run.flat_cmd(cmd, env=env)
cmd = ["busybox", "su", "pmos", "-c", flat_cmd]
return pmb.chroot.root(args, cmd, suffix, working_dir, log,
auto_init, return_stdout, check)
def exists(args, username, suffix="native"):
"""
Checks if username exists in the system
:param username: User name
:returns: bool
"""
output = pmb.chroot.root(args, ["getent", "passwd", username],
suffix, return_stdout=True, check=False)
return (output is not None)