Re: Reserving "special" port numbers in the kernel ?

[Randy.Dunlap]

On 15 Nov 2002, Arun Sharma wrote:

| [e-mail] (Xavier Bestel) writes:
|
| > Le sam 16/11/2002 à 01:00, Arun Sharma a écrit :
| > > One of the Intel server platforms has a magic port number (623) that
| > > it uses for remote server management. However, neither the kernel nor
| > > glibc are aware of this special port.
| > >
| > > As a result, when someone requests a privileged port using
| > > bindresvport(3), they may get this port back and bad things happen.
| > >
| > > Has anyone run into this or similar problems before ? Thoughts on
| > > what's the right place to handle this issue ?
| >
| > run a dummy app at startup which reserves that port ?
|
| Yes, I'm already aware of this one, but was looking for a lighter weight
| solution (ideally a config file change) that doesn't involve running an
| extra process (think of doing this on a large number of machines).

Look in arch/i386/kernel/setup.c (in 2.4.19):

There is this array:
  struct resource standard_io_resources[] = ...
that you could add to; you could even make the addition a CONFIG_ option.

-- 
~Randy
  "I read part of it all the way through." -- Samuel Goldwyn