wrapping glibc connect/accept functions

[Toby Murray]

Hi,
I'm working on a project in which we require the socket functions 
(specifically: connect, accept, read, write, and the others for reading 
and writing TCP sockets etc.) to be wrapped by code for authentication.

the platform is Linux kernel using the glibc libraries.
This wrapping needs to be done at the userlevel, (besides I don't have 
the inclination to mess with the implementation of these functions in 
the kernel).

I believe that these functions (which under Linux just make the 
socketcall system call) are provided by glibc but can't actually find 
the code for them in the glibc source (I'm using version 2.2.93)
Whereabouts in the glibc source is the actual implementation of these 
functions that then goes and makes the system call? - I don't want to 
modify these functions, merely rename them and create an identical 
wrapper to do some extra processing...

I've spent about the last two hours looking but can't actually find the 
file in which the (for example)

int connect(.... params etc ...){
..body etc...
}

exists within the glibc source...
can you help me out?

thanks alot
Toby

--
Toby Murray
Advanced Computer Capabilities Unit
Information Networks Division
Defence Science and Technology Organisation
Edinburgh, South Australia

Phone: (08) 8259 4134
Email: address@hidden

IMPORTANT: This e-mail remains the property of the Australian Defence
Organisation and is subject to the jurisdiction of section 70 of the
Crimes Act 1914. If you have received this e-mail in error, you are
requested to contact the sender and delete the e-mail.