Use sshfs to mount directory of MacOS into podman machine.

main.py

"""
https://github.com/containers/podman/issues/8016#issuecomment-920015800
"""
import getpass
import os
import re
import shlex
import subprocess

from pathlib import Path

SCRIPT_LAUNCH_PODMAN_MACHINE = """
podman machine init
podman machine start
"""


def invoke(script: str):
    for line in script.splitlines():
        if not line:
            continue

        return_code = subprocess.call(shlex.split(line))


def get_podman_machine_ssh_args() -> str:
    output = subprocess.check_output(
        shlex.split("podman machine --log-level=debug ssh -- exit 2>&1"),
        stderr=subprocess.STDOUT,
        encoding="utf-8",
    )
    ssh_command = [line for line in output.splitlines() if "Executing" in line][0]
    m = re.match(r".+ ssh \[(.+localhost) -o.+\]", ssh_command)
    return m.group(1)


def get_hostname() -> str:
    return subprocess.check_output(["hostname"], encoding="utf-8").strip()


def get_username() -> str:
    return os.environ.get("USER")


def podman_machine_invoke(hostname, ssh_args, cmd, stdin):
    p = subprocess.Popen(
        shlex.split(f"ssh -T -R 10000:{hostname}:22 {ssh_args} {cmd}"),
        stdin=subprocess.PIPE,
        stdout=subprocess.PIPE,
    )
    stdout, _ = p.communicate(stdin.lstrip().encode())
    try:
        p.wait()
    except KeyboardInterrupt:
        p.terminate()

    stdout = stdout.decode()
    print(stdout)
    return stdout


def main():
    invoke(SCRIPT_LAUNCH_PODMAN_MACHINE)
    ssh_args = get_podman_machine_ssh_args()

    hostname = get_hostname()
    username = get_username()
    podman_machine_invoke(hostname, ssh_args, "ssh-keygen -t rsa", "\n\n\n")
    stdout = podman_machine_invoke(
        hostname, ssh_args, "cat /var/home/core/.ssh/id_rsa.pub", ""
    )
    with Path("~/.ssh/authorized_keys").expanduser().open("w+") as f:
        for line in f:
            if line == stdout:
                break
        else:
            f.write(stdout)

    podman_machine_invoke(
        hostname,
        ssh_args,
        "",
        f"""
        sudo mkdir -p /mnt/Users/{username}/Documents/workspace
        sudo chown core:core /mnt/Users/{username}/Documents/workspace
        """,
    )
    podman_machine_invoke(
        hostname,
        ssh_args,
        "",
        f"sshfs -p 10000 \
            {username}@127.0.0.1:/Users/{username}/Documents/workspace \
                /mnt/Users/{username}/Documents/workspace",
    )


if __name__ == "__main__":
    main()