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#!/usr/bin/python
# -*- coding: utf-8 -*-
# Copyright (c) 2017, Joris Weijters <joris.weijters@gmail.com>
# GNU General Public License v3.0+ (see LICENSES/GPL-3.0-or-later.txt or https://www.gnu.org/licenses/gpl-3.0.txt)
# SPDX-License-Identifier: GPL-3.0-or-later
from __future__ import absolute_import, division, print_function
__metaclass__ = type
DOCUMENTATION = r'''
---
author:
- Joris Weijters (@molekuul)
module: aix_inittab
short_description: Manages the inittab on AIX
description:
- Manages the inittab on AIX.
extends_documentation_fragment:
- community.general.attributes
attributes:
check_mode:
support: full
diff_mode:
support: none
options:
name:
description:
- Name of the inittab entry.
type: str
required: true
aliases: [ service ]
runlevel:
description:
- Runlevel of the entry.
type: str
required: true
action:
description:
- Action what the init has to do with this entry.
type: str
choices:
- boot
- bootwait
- hold
- initdefault
- 'off'
- once
- ondemand
- powerfail
- powerwait
- respawn
- sysinit
- wait
command:
description:
- What command has to run.
type: str
required: true
insertafter:
description:
- After which inittabline should the new entry inserted.
type: str
state:
description:
- Whether the entry should be present or absent in the inittab file.
type: str
choices: [ absent, present ]
default: present
notes:
- The changes are persistent across reboots.
- You need root rights to read or adjust the inittab with the C(lsitab), C(chitab), C(mkitab) or C(rmitab) commands.
- Tested on AIX 7.1.
requirements:
- itertools
'''
EXAMPLES = '''
# Add service startmyservice to the inittab, directly after service existingservice.
- name: Add startmyservice to inittab
community.general.aix_inittab:
name: startmyservice
runlevel: 4
action: once
command: echo hello
insertafter: existingservice
state: present
become: true
# Change inittab entry startmyservice to runlevel "2" and processaction "wait".
- name: Change startmyservice to inittab
community.general.aix_inittab:
name: startmyservice
runlevel: 2
action: wait
command: echo hello
state: present
become: true
- name: Remove startmyservice from inittab
community.general.aix_inittab:
name: startmyservice
runlevel: 2
action: wait
command: echo hello
state: absent
become: true
'''
RETURN = '''
name:
description: Name of the adjusted inittab entry
returned: always
type: str
sample: startmyservice
msg:
description: Action done with the inittab entry
returned: changed
type: str
sample: changed inittab entry startmyservice
changed:
description: Whether the inittab changed or not
returned: always
type: bool
sample: true
'''
# Import necessary libraries
try:
# python 2
from itertools import izip
except ImportError:
izip = zip
from ansible.module_utils.basic import AnsibleModule
# end import modules
# start defining the functions
def check_current_entry(module):
# Check if entry exists, if not return False in exists in return dict,
# if true return True and the entry in return dict
existsdict = {'exist': False}
lsitab = module.get_bin_path('lsitab')
(rc, out, err) = module.run_command([lsitab, module.params['name']])
if rc == 0:
keys = ('name', 'runlevel', 'action', 'command')
values = out.split(":")
# strip non readable characters as \n
values = map(lambda s: s.strip(), values)
existsdict = dict(izip(keys, values))
existsdict.update({'exist': True})
return existsdict
def main():
# initialize
module = AnsibleModule(
argument_spec=dict(
name=dict(type='str', required=True, aliases=['service']),
runlevel=dict(type='str', required=True),
action=dict(type='str', choices=[
'boot',
'bootwait',
'hold',
'initdefault',
'off',
'once',
'ondemand',
'powerfail',
'powerwait',
'respawn',
'sysinit',
'wait',
]),
command=dict(type='str', required=True),
insertafter=dict(type='str'),
state=dict(type='str', default='present', choices=['absent', 'present']),
),
supports_check_mode=True,
)
result = {
'name': module.params['name'],
'changed': False,
'msg': ""
}
# Find commandline strings
mkitab = module.get_bin_path('mkitab')
rmitab = module.get_bin_path('rmitab')
chitab = module.get_bin_path('chitab')
rc = 0
# check if the new entry exists
current_entry = check_current_entry(module)
# if action is install or change,
if module.params['state'] == 'present':
# create new entry string
new_entry = module.params['name'] + ":" + module.params['runlevel'] + \
":" + module.params['action'] + ":" + module.params['command']
# If current entry exists or fields are different(if the entry does not
# exists, then the entry will be created
if (not current_entry['exist']) or (
module.params['runlevel'] != current_entry['runlevel'] or
module.params['action'] != current_entry['action'] or
module.params['command'] != current_entry['command']):
# If the entry does exist then change the entry
if current_entry['exist']:
if not module.check_mode:
(rc, out, err) = module.run_command([chitab, new_entry])
if rc != 0:
module.fail_json(
msg="could not change inittab", rc=rc, err=err)
result['msg'] = "changed inittab entry" + " " + current_entry['name']
result['changed'] = True
# If the entry does not exist create the entry
elif not current_entry['exist']:
if module.params['insertafter']:
if not module.check_mode:
(rc, out, err) = module.run_command(
[mkitab, '-i', module.params['insertafter'], new_entry])
else:
if not module.check_mode:
(rc, out, err) = module.run_command(
[mkitab, new_entry])
if rc != 0:
module.fail_json(msg="could not adjust inittab", rc=rc, err=err)
result['msg'] = "add inittab entry" + " " + module.params['name']
result['changed'] = True
elif module.params['state'] == 'absent':
# If the action is remove and the entry exists then remove the entry
if current_entry['exist']:
if not module.check_mode:
(rc, out, err) = module.run_command(
[rmitab, module.params['name']])
if rc != 0:
module.fail_json(
msg="could not remove entry from inittab)", rc=rc, err=err)
result['msg'] = "removed inittab entry" + " " + current_entry['name']
result['changed'] = True
module.exit_json(**result)
if __name__ == '__main__':
main()
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