[nylug-talk] Library interposers

[Dan Crosta]

Ron Guerin wrote:
> Anyone get a chance to look at this?
> 
> http://developers.sun.com/solaris/articles/lib_interposers.html
> 
> Dan's going to be talking about using this technique tonight.
> 
> - Ron

Also, if there's time, we discovered a nifty way to use interposition to 
circumvent many of sudo's security precautions. Someone remember to ask me about 
this after the presentation.

Other neat tricks with interposition:
  - redirect the target of fopen() and friends to another file depending on which
    program is calling fopen()
  - change arguments or results of function calls
  - correct bugs in library implementations


- d