Current File : //lib/python2.7/site-packages/salt/modules/freebsd_sysctl.py
# -*- coding: utf-8 -*-
'''
Module for viewing and modifying sysctl parameters
'''
# Import Python libs
from __future__ import absolute_import, unicode_literals, print_function
import logging
import os
# Import salt libs
import salt.utils.files
from salt.exceptions import CommandExecutionError
from salt.ext import six
# Define the module's virtual name
__virtualname__ = 'sysctl'
# Get logging started
log = logging.getLogger(__name__)
def __virtual__():
'''
Only runs on FreeBSD systems
'''
if __grains__['os'] == 'FreeBSD':
return __virtualname__
return (False, 'The freebsd_sysctl execution module cannot be loaded: '
'only available on FreeBSD systems.')
def _formatfor(name, value, config, tail=''):
if config == '/boot/loader.conf':
return '{0}="{1}"{2}'.format(name, value, tail)
else:
return '{0}={1}{2}'.format(name, value, tail)
def show(config_file=False):
'''
Return a list of sysctl parameters for this minion
CLI Example:
.. code-block:: bash
salt '*' sysctl.show
'''
roots = (
'compat',
'debug',
'dev',
'hptmv',
'hw',
'kern',
'machdep',
'net',
'p1003_1b',
'security',
'user',
'vfs',
'vm'
)
cmd = 'sysctl -ae'
ret = {}
comps = ['']
if config_file:
# If the file doesn't exist, return an empty list
if not os.path.exists(config_file):
return []
try:
with salt.utils.files.fopen(config_file, 'r') as f:
for line in f.readlines():
l = line.strip()
if l != "" and not l.startswith("#"):
comps = line.split('=', 1)
ret[comps[0]] = comps[1]
return ret
except (OSError, IOError):
log.error('Could not open sysctl config file')
return None
else:
out = __salt__['cmd.run'](cmd, output_loglevel='trace')
for line in out.splitlines():
if any([line.startswith('{0}.'.format(root)) for root in roots]):
comps = line.split('=', 1)
ret[comps[0]] = comps[1]
elif comps[0]:
ret[comps[0]] += '{0}\n'.format(line)
else:
continue
return ret
def get(name):
'''
Return a single sysctl parameter for this minion
CLI Example:
.. code-block:: bash
salt '*' sysctl.get hw.physmem
'''
cmd = 'sysctl -n {0}'.format(name)
out = __salt__['cmd.run'](cmd, python_shell=False)
return out
def assign(name, value):
'''
Assign a single sysctl parameter for this minion
CLI Example:
.. code-block:: bash
salt '*' sysctl.assign net.inet.icmp.icmplim 50
'''
ret = {}
cmd = 'sysctl {0}="{1}"'.format(name, value)
data = __salt__['cmd.run_all'](cmd, python_shell=False)
if data['retcode'] != 0:
raise CommandExecutionError('sysctl failed: {0}'.format(
data['stderr']))
new_name, new_value = data['stdout'].split(':', 1)
ret[new_name] = new_value.split(' -> ')[-1]
return ret
def persist(name, value, config='/etc/sysctl.conf'):
'''
Assign and persist a simple sysctl parameter for this minion
CLI Example:
.. code-block:: bash
salt '*' sysctl.persist net.inet.icmp.icmplim 50
salt '*' sysctl.persist coretemp_load NO config=/boot/loader.conf
'''
nlines = []
edited = False
value = six.text_type(value)
with salt.utils.files.fopen(config, 'r') as ifile:
for line in ifile:
line = salt.utils.stringutils.to_unicode(line).rstrip('\n')
if not line.startswith('{0}='.format(name)):
nlines.append(line)
continue
else:
key, rest = line.split('=', 1)
if rest.startswith('"'):
_, rest_v, rest = rest.split('"', 2)
elif rest.startswith('\''):
_, rest_v, rest = rest.split('\'', 2)
else:
rest_v = rest.split()[0]
rest = rest[len(rest_v):]
if rest_v == value:
return 'Already set'
new_line = _formatfor(key, value, config, rest)
nlines.append(new_line)
edited = True
if not edited:
nlines.append("{0}\n".format(_formatfor(name, value, config)))
with salt.utils.files.fopen(config, 'w+') as ofile:
nlines = [salt.utils.stringutils.to_str(_l) + '\n' for _l in nlines]
ofile.writelines(nlines)
if config != '/boot/loader.conf':
assign(name, value)
return 'Updated'
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