mirror of
https://github.com/thegeeklab/ansible-later.git
synced 2024-07-06 09:00:58 +02:00
141 lines
5.9 KiB
Python
141 lines
5.9 KiB
Python
# Collect facts related to system service manager and init.
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#
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# This file is part of Ansible
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#
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# Ansible is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Ansible is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
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from __future__ import (absolute_import, division, print_function)
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__metaclass__ = type
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import os
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import platform
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import re
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from ansible.module_utils._text import to_native
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from ansible.module_utils.facts.utils import get_file_content
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from ansible.module_utils.facts.collector import BaseFactCollector
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# The distutils module is not shipped with SUNWPython on Solaris.
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# It's in the SUNWPython-devel package which also contains development files
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# that don't belong on production boxes. Since our Solaris code doesn't
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# depend on LooseVersion, do not import it on Solaris.
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if platform.system() != 'SunOS':
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from distutils.version import LooseVersion
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class ServiceMgrFactCollector(BaseFactCollector):
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name = 'service_mgr'
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_fact_ids = set()
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required_facts = set(['platform', 'distribution'])
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@staticmethod
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def is_systemd_managed(module):
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# tools must be installed
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if module.get_bin_path('systemctl'):
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# this should show if systemd is the boot init system, if checking init faild to mark as systemd
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# these mirror systemd's own sd_boot test http://www.freedesktop.org/software/systemd/man/sd_booted.html
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for canary in ["/run/systemd/system/", "/dev/.run/systemd/", "/dev/.systemd/"]:
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if os.path.exists(canary):
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return True
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return False
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def collect(self, module=None, collected_facts=None):
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facts_dict = {}
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if not module:
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return facts_dict
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collected_facts = collected_facts or {}
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service_mgr_name = None
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# TODO: detect more custom init setups like bootscripts, dmd, s6, Epoch, etc
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# also other OSs other than linux might need to check across several possible candidates
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# Mapping of proc_1 values to more useful names
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proc_1_map = {
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'procd': 'openwrt_init',
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'runit-init': 'runit',
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'svscan': 'svc',
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'openrc-init': 'openrc',
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}
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# try various forms of querying pid 1
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proc_1 = get_file_content('/proc/1/comm')
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if proc_1 is None:
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# FIXME: return code isnt checked
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# FIXME: if stdout is empty string, odd things
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# FIXME: other code seems to think we could get proc_1 == None past this point
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rc, proc_1, err = module.run_command("ps -p 1 -o comm|tail -n 1", use_unsafe_shell=True)
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# If the output of the command starts with what looks like a PID, then the 'ps' command
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# probably didn't work the way we wanted, probably because it's busybox
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if re.match(r' *[0-9]+ ', proc_1):
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proc_1 = None
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# The ps command above may return "COMMAND" if the user cannot read /proc, e.g. with grsecurity
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if proc_1 == "COMMAND\n":
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proc_1 = None
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# FIXME: empty string proc_1 staus empty string
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if proc_1 is not None:
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proc_1 = os.path.basename(proc_1)
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proc_1 = to_native(proc_1)
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proc_1 = proc_1.strip()
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if proc_1 is not None and (proc_1 == 'init' or proc_1.endswith('sh')):
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# many systems return init, so this cannot be trusted, if it ends in 'sh' it probalby is a shell in a container
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proc_1 = None
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# if not init/None it should be an identifiable or custom init, so we are done!
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if proc_1 is not None:
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# Lookup proc_1 value in map and use proc_1 value itself if no match
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# FIXME: empty string still falls through
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service_mgr_name = proc_1_map.get(proc_1, proc_1)
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# FIXME: replace with a system->service_mgr_name map?
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# start with the easy ones
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elif collected_facts.get('ansible_distribution', None) == 'MacOSX':
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# FIXME: find way to query executable, version matching is not ideal
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if LooseVersion(platform.mac_ver()[0]) >= LooseVersion('10.4'):
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service_mgr_name = 'launchd'
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else:
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service_mgr_name = 'systemstarter'
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elif 'BSD' in collected_facts.get('ansible_system', '') or collected_facts.get('ansible_system') in ['Bitrig', 'DragonFly']:
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# FIXME: we might want to break out to individual BSDs or 'rc'
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service_mgr_name = 'bsdinit'
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elif collected_facts.get('ansible_system') == 'AIX':
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service_mgr_name = 'src'
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elif collected_facts.get('ansible_system') == 'SunOS':
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service_mgr_name = 'smf'
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elif collected_facts.get('ansible_distribution') == 'OpenWrt':
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service_mgr_name = 'openwrt_init'
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elif collected_facts.get('ansible_system') == 'Linux':
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# FIXME: mv is_systemd_managed
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if self.is_systemd_managed(module=module):
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service_mgr_name = 'systemd'
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elif module.get_bin_path('initctl') and os.path.exists("/etc/init/"):
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service_mgr_name = 'upstart'
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elif os.path.exists('/sbin/openrc'):
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service_mgr_name = 'openrc'
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elif os.path.exists('/etc/init.d/'):
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service_mgr_name = 'sysvinit'
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if not service_mgr_name:
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# if we cannot detect, fallback to generic 'service'
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service_mgr_name = 'service'
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facts_dict['service_mgr'] = service_mgr_name
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return facts_dict
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