#

# This file is part of libdebug Python library (https://github.com/libdebug/libdebug).

# Copyright (c) 2024 Roberto Alessandro Bertolini. All rights reserved.

# Licensed under the MIT license. See LICENSE file in the project root for details.

#

import os

POSIX_SPAWN_CLOSE = 0

POSIX_SPAWN_DUP2 = 1

POSIX_SPAWN_OPEN = 2

def posix_spawn(file: str, argv: list, env: dict, file_actions: list, setpgroup: bool) -> int:

"""Spawn a new process, emulating the POSIX spawn function."""

child_pid = os.fork()

if child_pid == 0:

for element in file_actions:

if element[0] == POSIX_SPAWN_CLOSE:

os.close(element[1])

elif element[0] == POSIX_SPAWN_DUP2:

os.dup2(element[1], element[2])

elif element[0] == POSIX_SPAWN_OPEN:

fd, path, flags, mode = element[1:]

os.dup2(os.open(path, flags, mode), fd)

else:

raise ValueError("Invalid file action")

if setpgroup == 0:

os.setpgid(0, 0)

os.execve(file, argv, env)

return child_pid