On Sat, Jun 19, 2021 at 12:42:14PM +0000, Al Viro wrote:
> On Sat, Jun 19, 2021 at 06:01:48AM -0500, Arthur Williams wrote:
> > Make opening a file with the O_CREAT flag a no-op if the specified file
> > exists even if it exists as a directory. Allows userspace commands, like
> > flock, to open a file and create it if it doesn't exist instead of
> > having to parse errno.
>
> Not going to happen. It's a user-visible behaviour, consistent between
> all kinds of Unices, consistent with POSIX and it does make sense.
>
> NAK.
Agreed. POSIX states:
[EISDIR]
The named file is a directory and oflag includes O_WRONLY or O_RDWR, or includes O_CREAT without O_DIRECTORY.
so I would say the POSIX committee considered this situation and
explicitly did not want it to succeed.
