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# Copyright (c) 2017 Ansible Project
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
from __future__ import annotations
import os
import typing as t
from ansible.module_utils.facts.collector import BaseFactCollector
def is_chroot(module=None):
is_chroot = None
if os.environ.get('debian_chroot', False):
is_chroot = True
else:
my_root = os.stat('/')
try:
# check if my file system is the root one
proc_root = os.stat('/proc/1/root/.')
is_chroot = my_root.st_ino != proc_root.st_ino or my_root.st_dev != proc_root.st_dev
except Exception:
# I'm not root or no proc, fallback to checking it is inode #2
fs_root_ino = 2
if module is not None:
stat_path = module.get_bin_path('stat')
if stat_path:
cmd = [stat_path, '-f', '--format=%T', '/']
rc, out, err = module.run_command(cmd)
if 'btrfs' in out:
fs_root_ino = 256
elif 'xfs' in out:
fs_root_ino = 128
is_chroot = (my_root.st_ino != fs_root_ino)
return is_chroot
class ChrootFactCollector(BaseFactCollector):
name = 'chroot'
_fact_ids = set(['is_chroot']) # type: t.Set[str]
def collect(self, module=None, collected_facts=None):
return {'is_chroot': is_chroot(module)}
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