Re: Wishlist: credential file update/access collision avoidance?

On Mon, Oct 3, 2011 at 3:20 PM, Jeffrey Hutzelman <[email protected]> wrote:
>> What we mean here (what I take to have been meant) by POSIX semantics
>> here is not necessarily strict adherence to POSIX, but things like
>> "unlink() of open files is allowed" and "rename() is atomic and
>> unlink()s whatever file might have existed with the target name" --
>> that sort of thing.
>
> That was not at all clear to me from context.
>
> Certainly I think it is reasonable to assume that a filesystem used
> for /tmp will have those particular properties.

This is getting rather OT, but, when people refer to POSIX filesystem
semantics I almost always understand it to refer to such rules (as
well as to others such as write visibility rules, and even the horrid
first-close-drops-locks rule).  The sorts of semantics that Unix
programmers typically take for granted.

Nico
--