Preston Moore <prestonkmo...@gmail.com> added the comment: Hey everyone,
I have updated the pull request to include a version of copyfile() that attempts to address the discussed race condition by open()’ing a file descriptor to the relevant files as early as possible and maintaining it throughout processing. In order for this to work I had to use some lower level posix-only features. Specifically, I had to open() the files non-blocking initially and using fcntl() to make them blocking once some initial checks have been performed. The functions behavior under Windows should be unchanged. I chose this course because Windows doesn’t support fcntl() or os.open() with O_NONBLOCK. I will add a few additional tests around the new checks and get things ready for a merge. I would also be glad to use a strategy of this nature to fix similar bugs in the other areas discussed above. Thanks, Preston ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue30400> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
