how could I intercept linux sys calls?

Question

Besides the LD_PRELOAD trick , and Linux Kernel Modules that replace a certain syscall with one provided by you , is there any possibility to intercept a syscall ( open for

Answer 1

if you really need a solution you might be interested in the DR rootkit that accomplishes just this, http://www.immunityinc.com/downloads/linux_rootkit_source.tbz2 the article about it is here http://www.theregister.co.uk/2008/09/04/linux_rootkit_released/