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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
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