112 lines
3.3 KiB
Python
112 lines
3.3 KiB
Python
import os.path
|
|
import pathlib
|
|
import platform
|
|
import shutil
|
|
import subprocess
|
|
import sys
|
|
from contextlib import contextmanager
|
|
|
|
|
|
def ldconfig(*dirs):
|
|
# ld.so.conf must exist, or `ldconfig` throws a warning
|
|
subprocess.run(["touch", "/etc/ld.so.conf"], check=True)
|
|
|
|
if len(dirs) > 0:
|
|
with open("/etc/ld.so.conf", "w", encoding="utf8") as f:
|
|
for d in dirs:
|
|
f.write(f"{d}\n")
|
|
f.flush()
|
|
|
|
subprocess.run(["ldconfig"], check=True)
|
|
|
|
|
|
def sysusers():
|
|
try:
|
|
subprocess.run(
|
|
["systemd-sysusers"],
|
|
stdout=subprocess.PIPE,
|
|
stderr=subprocess.STDOUT,
|
|
check=True,
|
|
)
|
|
except subprocess.CalledProcessError as error:
|
|
sys.stderr.write(error.stdout)
|
|
sys.exit(1)
|
|
|
|
|
|
@contextmanager
|
|
def create_machine_id_if_needed(tree="", keep_empty=False):
|
|
"""Create a machine-id with a fake machine id if it does not exist.
|
|
The machine-id file will be delete at context exit unless specified
|
|
with 'keep_empty' variable. In that case an empty machine-id will
|
|
be kept.
|
|
"""
|
|
path = pathlib.Path(f"{tree}/etc/machine-id")
|
|
try:
|
|
if not path.exists():
|
|
path.parent.mkdir(mode=0o755, exist_ok=True)
|
|
with path.open(mode="w", encoding="utf8") as f:
|
|
# create a fake machine ID to improve reproducibility
|
|
f.write("ffffffffffffffffffffffffffffffff\n")
|
|
path.chmod(0o444)
|
|
yield
|
|
finally:
|
|
path.unlink()
|
|
if keep_empty:
|
|
path.touch()
|
|
path.chmod(0o444)
|
|
|
|
|
|
def tmpfiles():
|
|
# Allow systemd-tmpfiles to return non-0. Some packages want to create
|
|
# directories owned by users that are not set up with systemd-sysusers.
|
|
subprocess.run(["systemd-tmpfiles", "--create"], check=False)
|
|
|
|
|
|
def remove_tmpfiles():
|
|
subprocess.run(["systemd-tmpfiles", "--clean", "--remove"], check=False)
|
|
|
|
|
|
def nsswitch():
|
|
# the default behavior is fine, but using nss-resolve does not
|
|
# necessarily work in a non-booted container, so make sure that
|
|
# is not configured.
|
|
try:
|
|
os.remove("/etc/nsswitch.conf")
|
|
except FileNotFoundError:
|
|
pass
|
|
|
|
|
|
def python_alternatives():
|
|
"""/usr/bin/python3 is a symlink to /etc/alternatives/python3, which points
|
|
to /usr/bin/python3.6 by default. Recreate the link in /etc, so that
|
|
shebang lines in stages and assemblers work.
|
|
"""
|
|
os.makedirs("/etc/alternatives", exist_ok=True)
|
|
try:
|
|
os.symlink("/usr/bin/python3.6", "/etc/alternatives/python3")
|
|
except FileExistsError:
|
|
pass
|
|
|
|
|
|
def sequoia():
|
|
# This provides a default set of crypto-policies which is important for
|
|
# re-enabling SHA1 support with rpm (so we can cross-build CentOS-Stream-9
|
|
# images).
|
|
os.makedirs("/etc/crypto-policies", exist_ok=True)
|
|
shutil.copytree(
|
|
"/usr/share/crypto-policies/back-ends/DEFAULT",
|
|
"/etc/crypto-policies/back-ends"
|
|
)
|
|
|
|
|
|
def quirks():
|
|
# Platform specific quirks
|
|
env = os.environ.copy()
|
|
|
|
if platform.machine() == "aarch64":
|
|
# Work around a bug in qemu-img on aarch64 that can lead to qemu-img
|
|
# hangs when more then one coroutine is use (which is the default)
|
|
# See https://bugs.launchpad.net/qemu/+bug/1805256
|
|
env["OSBUILD_QEMU_IMG_COROUTINES"] = "1"
|
|
|
|
return env
|