Server : LiteSpeed System : Linux barito.iixcp.rumahweb.net 5.14.0-611.49.1.el9_7.x86_64 #1 SMP PREEMPT_DYNAMIC Tue Apr 21 16:39:08 EDT 2026 x86_64 User : elvh3918 ( 1528) PHP Version : 8.2.31 Disable Function : mail Directory :  /proc/self/root/opt/alt/python37/lib/python3.7/site-packages/filelock/

Upload File : current_dir [ Writeable ] document_root [ Writeable ]

from __future__ import annotations

import os
import stat


def raise_on_exist_ro_file(filename: str) -> None:
    try:
        file_stat = os.stat(filename)  # use stat to do exists + can write to check without race condition
    except OSError:
        return None  # swallow does not exist or other errors

    if file_stat.st_mtime != 0:  # if os.stat returns but modification is zero that's an invalid os.stat - ignore it
        if not (file_stat.st_mode & stat.S_IWUSR):
            raise PermissionError(f"Permission denied: {filename!r}")


__all__ = [
    "raise_on_exist_ro_file",
]