There is a very recent development in this area -- there is now a way to do it without ptrace and instead entirely using seccomp[1]. It's somewhat more complica

There is a very recent development in this area -- there is now a way to do it without ptrace and instead entirely using seccomp[1]. It's somewhat more complicated (then again, ptrace is far from simple to get right) but gives you the benefit that you don't need to use ptrace (which means that debuggers and upstart will work). It's going to see a lot of use in container runtimes like LXC for faking mounts and kernel module loading (and in tools like remainroot for rootless containers), but it will likely also replace lots of uses of LD_PRELOAD. [1]: https://youtube.com/watch?v=sqvF_Mdtzgg https://youtube.com/watch?v=sqvF_Mdtzgg