Subject: Re: adding __libc_read et al?
To: Simon J. Gerraty <>
From: Todd Vierling <>
List: tech-userlevel
Date: 12/31/1999 22:07:51
On Sat, 1 Jan 2000, Simon J. Gerraty wrote:

: >Maybe, though I have trouble imagining what could reasonably use them.
: My libsslfd would use them if available.
: It contains evil magic to hook read(),write() etc so that stdio can have 
: SSL transport shoved underneath - works a treat for ftp/ftpd.

Then you may want to have a look at src/lib/libc/include/namespace.h -
there's already some work here, using a simple single underscore instead of
__libc_.  However, it's not all complete, nor do we actually use the weak
symbol support behind it.

: Right now I use syscall(2) if available and failing that, I extract 
: read.o etc from libc.a and frob the labels :-)

You can always use dlsym() in a dynamic executable.

-- Todd Vierling (