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Re: [PATCH]:bindresvport should check /etc/services

From: "H. J. Lu" <hjl at lucon dot org>
To: Ulrich Drepper <drepper at redhat dot com>
Cc: Rajasekhar Inguva <irajasek at in dot ibm dot com>,libc-alpha at sources dot redhat dot com
Date: Mon, 25 Nov 2002 22:44:09 -0800
Subject: Re: [PATCH]:bindresvport should check /etc/services
References: <OFA82AF8B8.E909DEF3-ON65256C7D.001EF2F7@in.ibm.com> <3DE30D51.4040702@redhat.com>

On Mon, Nov 25, 2002 at 09:57:37PM -0800, Ulrich Drepper wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
> 
> Rajasekhar Inguva wrote:
> 
> > The glibc routine bindresvport(), in it's current implementation, randomly
> > tries to a bind to a port number in the range 600-1023.
> 
> And this is the right implementation.  If it's causing problems your
> setup is wrong.
> 

Not quite, at least the usage of bindresvport in glibc is questionable.
The problem is sunrpc calls bindresvport. Potentially, sunrpc may
grab ports in /etc/service marked for other services. I have seen that
myself. It took me a while to figure out what is going on.

H.J.

Follow-Ups:
- Re: [PATCH]:bindresvport should check /etc/services
  - From: Ulrich Drepper

References:
- [PATCH]:bindresvport should check /etc/services
  - From: Rajasekhar Inguva
- Re: [PATCH]:bindresvport should check /etc/services
  - From: Ulrich Drepper

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