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47 lines
1.5 KiB
Python
47 lines
1.5 KiB
Python
# Copyright (c) 2017 Ansible Project
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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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import os
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from ansible.module_utils.facts.collector import BaseFactCollector
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def is_chroot(module=None):
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is_chroot = None
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if os.environ.get('debian_chroot', False):
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is_chroot = True
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else:
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my_root = os.stat('/')
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try:
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# check if my file system is the root one
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proc_root = os.stat('/proc/1/root/.')
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is_chroot = my_root.st_ino != proc_root.st_ino or my_root.st_dev != proc_root.st_dev
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except Exception:
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# I'm not root or no proc, fallback to checking it is inode #2
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fs_root_ino = 2
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if module is not None:
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stat_path = module.get_bin_path('stat')
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if stat_path:
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cmd = [stat_path, '-f', '--format=%T', '/']
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rc, out, err = module.run_command(cmd)
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if 'btrfs' in out:
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fs_root_ino = 256
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elif 'xfs' in out:
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fs_root_ino = 128
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is_chroot = (my_root.st_ino != fs_root_ino)
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return is_chroot
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class ChrootFactCollector(BaseFactCollector):
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name = 'chroot'
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_fact_ids = set(['is_chroot'])
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def collect(self, module=None, collected_facts=None):
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return {'is_chroot': is_chroot(module)}
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