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150 lines
3.8 KiB
Python
150 lines
3.8 KiB
Python
#!/usr/bin/python
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# encoding: utf-8 -*-
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# Copyright: (c) 2013, Matthias Vogelgesang <matthias.vogelgesang@gmail.com>
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# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
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from __future__ import absolute_import, division, print_function
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__metaclass__ = type
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DOCUMENTATION = '''
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---
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module: kernel_blacklist
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author:
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- Matthias Vogelgesang (@matze)
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short_description: Blacklist kernel modules
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description:
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- Add or remove kernel modules from blacklist.
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options:
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name:
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description:
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- Name of kernel module to black- or whitelist.
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required: true
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state:
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description:
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- Whether the module should be present in the blacklist or absent.
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choices: [ absent, present ]
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default: present
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blacklist_file:
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description:
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- If specified, use this blacklist file instead of
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C(/etc/modprobe.d/blacklist-ansible.conf).
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'''
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EXAMPLES = '''
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- name: Blacklist the nouveau driver module
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kernel_blacklist:
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name: nouveau
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state: present
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'''
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import os
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import re
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from ansible.module_utils.basic import AnsibleModule
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class Blacklist(object):
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def __init__(self, module, filename, checkmode):
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self.filename = filename
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self.module = module
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self.checkmode = checkmode
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def create_file(self):
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if not self.checkmode and not os.path.exists(self.filename):
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open(self.filename, 'a').close()
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return True
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elif self.checkmode and not os.path.exists(self.filename):
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self.filename = os.devnull
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return True
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else:
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return False
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def get_pattern(self):
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return r'^blacklist\s*' + self.module + '$'
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def readlines(self):
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f = open(self.filename, 'r')
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lines = f.readlines()
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f.close()
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return lines
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def module_listed(self):
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lines = self.readlines()
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pattern = self.get_pattern()
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for line in lines:
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stripped = line.strip()
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if stripped.startswith('#'):
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continue
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if re.match(pattern, stripped):
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return True
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return False
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def remove_module(self):
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lines = self.readlines()
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pattern = self.get_pattern()
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if self.checkmode:
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f = open(os.devnull, 'w')
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else:
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f = open(self.filename, 'w')
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for line in lines:
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if not re.match(pattern, line.strip()):
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f.write(line)
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f.close()
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def add_module(self):
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if self.checkmode:
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f = open(os.devnull, 'a')
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else:
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f = open(self.filename, 'a')
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f.write('blacklist %s\n' % self.module)
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f.close()
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def main():
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module = AnsibleModule(
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argument_spec=dict(
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name=dict(type='str', required=True),
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state=dict(type='str', default='present', choices=['absent', 'present']),
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blacklist_file=dict(type='str')
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),
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supports_check_mode=True,
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)
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args = dict(changed=False, failed=False,
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name=module.params['name'], state=module.params['state'])
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filename = '/etc/modprobe.d/blacklist-ansible.conf'
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if module.params['blacklist_file']:
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filename = module.params['blacklist_file']
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blacklist = Blacklist(args['name'], filename, module.check_mode)
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if blacklist.create_file():
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args['changed'] = True
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else:
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args['changed'] = False
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if blacklist.module_listed():
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if args['state'] == 'absent':
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blacklist.remove_module()
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args['changed'] = True
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else:
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if args['state'] == 'present':
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blacklist.add_module()
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args['changed'] = True
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module.exit_json(**args)
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if __name__ == '__main__':
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main()
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