On 2002-06-11, Muli Ben-Yehuda wrote:
> Is there a way to open a file (get an fd) and then delete it, in one
> atomic operation?
>
> I need to open a temporary file (but with a fixed name, so mkstemp()
> and friends are not an option) and then make sure it doesn't remain
> behind if the program should die unexpectedly. Doing
>
> open("foo", ...);
> unlink("foo", ...);
>
> is obviously unsafe, since foo might be pointing to something else by
> the time I unlink it. Suggestions?
You know that you can do the unlink *immediately* after the open, right?
you can still use the fd after that, but your "foo" link will live only
for a couple of microseconds (or whatever).
If I understand you correctly, you want to avoid even those
microseconds? you want to make sure that the "foo" link *never* exists
in any directory? (then why do you care for a fixed name, if the name
never exists?)
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