Re: Does mountd/statd really need to listen on a privileged port??

[Mike Frysinger <vapier@gentoo.org>]

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On Thursday 12 April 2007, Neil Brown wrote:
> There are supposed to be some ranges which are never assigned.
> According to
>   http://www.iana.org/assignments/port-numbers
>
>     DYNAMIC AND/OR PRIVATE PORTS
>
>     The Dynamic and/or Private Ports are those from 49152 through 65535
>
> as long as we choose one of those (and that is what happens if you
> just let the kernel decide for you) there must be no conflict.

hmm, true ... that is much simpler to grab random ports in that range :)

> I had thought of that too.  I'll probably implement it.  Your code (in
> subsequent email) is a little more complicated than needed.  Just
> repeatedly call bindresvport, closing if you don't like it.  The port
> number tried increments each time.

is that guaranteed somewhere ?  when i first worked on the code snippet, i 
looked for such info and since i couldnt locate any such "the implementation 
must increment" requirement, i felt the more complicated recursive approach 
is better since relying on Linux/glibc behavior is not appropriate ...
-mike

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