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# (c) 2012, Michael DeHaan <michael.dehaan@gmail.com> # # This file is part of Ansible # # Ansible 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. # # Ansible 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 Ansible. If not, see <http://www.gnu.org/licenses/>. from __future__ import (absolute_import, division, print_function) __metaclass__ = type import os import select import shlex import subprocess import sys from ansible.module_utils._text import to_bytes def run_cmd(cmd, live=False, readsize=10): cmdargs = shlex.split(cmd) # subprocess should be passed byte strings. cmdargs = [to_bytes(a, errors='surrogate_or_strict') for a in cmdargs] p = subprocess.Popen(cmdargs, stdout=subprocess.PIPE, stderr=subprocess.PIPE) stdout = b'' stderr = b'' rpipes = [p.stdout, p.stderr] while True: rfd, wfd, efd = select.select(rpipes, [], rpipes, 1) if p.stdout in rfd: dat = os.read(p.stdout.fileno(), readsize) if live: sys.stdout.buffer.write(dat) stdout += dat if dat == b'': rpipes.remove(p.stdout) if p.stderr in rfd: dat = os.read(p.stderr.fileno(), readsize) stderr += dat if live: sys.stdout.buffer.write(dat) if dat == b'': rpipes.remove(p.stderr) # only break out if we've emptied the pipes, or there is nothing to # read from and the process has finished. if (not rpipes or not rfd) and p.poll() is not None: break # Calling wait while there are still pipes to read can cause a lock elif not rpipes and p.poll() is None: p.wait() return p.returncode, stdout, stderr