Implementation of read() under Linux

[Ian Lance Taylor]

"Vineet Joglekar" <vintya@excite.com> writes:

> For my project, I need to trace the read() function call till the
> VFS level. I know that read() makes the kernel invoke sys_read() and
> I want to do the same thing with some additional
> functionalities. Can i get the implementation of the read() function
> in gcc source code (maybe in the source file like unistd.c) so that
> on the parallel lines I will be able to write my own my_read()
> function which in turn will call the sys_read() too?

read() is a library routine which is not provided by gcc.  On
GNU/Linux systems, it is provided by glibc.  See
http://sources.redhat.com/glibc/

Ian