#!/usr/bin/python # -*- coding: utf-8 -*- # Copyright: (c) 2017, Joris Weijters <joris.weijters@gmail.com> # GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt) 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. options: name: description: - Name of the inittab entry. type: str required: yes aliases: [ service ] runlevel: description: - Runlevel of the entry. type: str required: yes 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: yes 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: yes # 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: yes - name: Remove startmyservice from inittab community.general.aix_inittab: name: startmyservice runlevel: 2 action: wait command: echo hello state: absent become: yes ''' 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 wil 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()