69 lines
2.6 KiB
Python
69 lines
2.6 KiB
Python
# Copyright 2023 Mark Hargreaves, Luca Weiss
|
|
# SPDX-License-Identifier: GPL-3.0-or-later
|
|
import logging
|
|
import os
|
|
import socket
|
|
import time
|
|
|
|
import pmb.chroot.root
|
|
import pmb.helpers.run
|
|
|
|
|
|
def start_nbd_server(args, ip="172.16.42.2", port=9999):
|
|
"""
|
|
Start nbd server in chroot_native with pmOS rootfs.
|
|
:param ip: IP address to serve nbd server for
|
|
:param port: port of nbd server
|
|
"""
|
|
|
|
pmb.chroot.apk.install(args, ['nbd'])
|
|
|
|
chroot = f"{args.work}/chroot_native"
|
|
|
|
rootfs_path = f"/mnt/pmbootstrap-netboot/{args.device}.img"
|
|
if not os.path.exists(chroot + rootfs_path) or args.replace:
|
|
rootfs_path2 = f"/home/pmos/rootfs/{args.device}.img"
|
|
if not os.path.exists(chroot + rootfs_path2):
|
|
raise RuntimeError("The rootfs has not been generated yet, please "
|
|
"run 'pmbootstrap install' first.")
|
|
if args.replace and not \
|
|
pmb.helpers.cli.confirm(args, f"Are you sure you want to "
|
|
f"replace the rootfs for "
|
|
f"{args.device}?"):
|
|
return
|
|
pmb.chroot.root(args, ["cp", rootfs_path2, rootfs_path])
|
|
logging.info(f"NOTE: Copied device image to {args.work}"
|
|
f"/images_netboot/. The image will persist \"pmbootstrap "
|
|
f"zap\" for your convenience. Use \"pmbootstrap netboot "
|
|
f"serve --help\" for more options.")
|
|
|
|
logging.info(f"Running nbd server for {args.device} on {ip} port {port}.")
|
|
|
|
while True:
|
|
logging.info("Waiting for postmarketOS device to appear...")
|
|
|
|
# Try to bind to the IP ourselves before handing it to nbd-servere
|
|
# This is purely to improve the UX as nbd-server just quits when it
|
|
# cannot bind to an IP address.
|
|
test_socket = socket.socket()
|
|
while True:
|
|
try:
|
|
test_socket.bind((ip, 9998))
|
|
except OSError as e:
|
|
if e.errno != 99: # Cannot assign requested address
|
|
raise e
|
|
# Wait a bit before retrying
|
|
time.sleep(0.5)
|
|
continue
|
|
test_socket.close()
|
|
break
|
|
|
|
logging.info("Found postmarketOS device, serving image...")
|
|
pmb.chroot.root(
|
|
args, ["nbd-server", f"{ip}@{port}", rootfs_path, "-d"],
|
|
check=False, disable_timeout=True)
|
|
logging.info("nbd-server quit. Connection lost?")
|
|
# On a reboot nbd-server will quit, but the IP address sticks around
|
|
# for a bit longer, so wait.
|
|
time.sleep(5)
|