* Valdis.Kletnieks@xxxxxx (Valdis.Kletnieks@xxxxxx) wrote:
> On Fri, 25 Sep 2009 13:37:47 BST, "Dr. David Alan Gilbert" said:
>
> > Given an fd opened in this way is it possible to reopen it normally and
> > be guarenteed to get the same object?
>
> It's not possible even without this flag. Consider:
>
> fd1 = open("/tmp/foo",flags);
> rc = rename("/tmp/foo","/tmp/bar");
> fd2 = open("/tmp/foo",flags);
>
> Or were you asking if *absent that sort of tomfoolery* if it would work?
I know it's not possible without this flag, my interest is whether
it would be possible WITH this flag to promote an fd opened with the
O_NODE to a normal fd, guaranteeing that it's still operating on the
same object. The case I'm (vaguely) thinking of is open with O_NODE,
fstat it, come to the conslusion it's not a device and then proceed
to open it and read from it.
Dave
--
-----Open up your eyes, open up your mind, open up your code -------
/ Dr. David Alan Gilbert | Running GNU/Linux on Alpha,68K| Happy \
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