blob: 5386eea409e4961476f8debaf8d8e8e82893c0cc [file] [log] [blame]
# Copyright OpenEmbedded Contributors
# SPDX-License-Identifier: GPL-2.0-only
import os
def sort_shadowutils_file(filename, mapping):
Sorts a passwd or group file based on the numeric ID in the third column.
If a mapping is given, the name from the first column is mapped via that
dictionary instead (necessary for /etc/shadow and /etc/gshadow). If not,
a new mapping is created on the fly and returned.
new_mapping = {}
with open(filename, 'rb+') as f:
lines = f.readlines()
# No explicit error checking for the sake of simplicity. /etc
# files are assumed to be well-formed, causing exceptions if
# not.
for line in lines:
entries = line.split(b':')
name = entries[0]
if mapping is None:
id = int(entries[2])
id = mapping[name]
new_mapping[name] = id
# Sort by numeric id first, with entire line as secondary key
# (just in case that there is more than one entry for the same id).
lines.sort(key=lambda line: (new_mapping[line.split(b':')[0]], line))
# We overwrite the entire file, i.e. no truncate() necessary.
return new_mapping
def sort_shadowutils_files(sysconfdir):
Sorts shadow-utils 'passwd' and 'group' files in a rootfs' /etc directory
by ID.
for main, shadow in (('passwd', 'shadow'),
('group', 'gshadow')):
filename = os.path.join(sysconfdir, main)
if os.path.exists(filename):
mapping = sort_shadowutils_file(filename, None)
filename = os.path.join(sysconfdir, shadow)
if os.path.exists(filename):
sort_shadowutils_file(filename, mapping)
def remove_shadowutils_backup_file(filename):
Remove shadow-utils backup file for files like /etc/passwd.
backup_filename = filename + '-'
if os.path.exists(backup_filename):
def remove_shadowutils_backup_files(sysconfdir):
Remove shadow-utils backup files in a rootfs /etc directory. They are not
needed in the initial root filesystem and sorting them can be inconsistent
(YOCTO #11043).
for filename in (
filepath = os.path.join(sysconfdir, filename)
def tidy_shadowutils_files(sysconfdir):
Tidy up shadow-utils files.
return True