This, for now, disables correct handling of program termination,
but not because the RAII does not work. Instead, we need to implement
a proper signal handling concept.
We also removed some teardown handlers which are not covered by RAII,
like removing the routes we set up. The reason for this is, that this
is going to be taken care of by removing the wireguard device anyway.
This is similar to `rosenpass exchange`/`rosenpass exchange-config`.
It's however slightly different to the configuration file models the `rp
exchange` command line.
- Policy is now set in main.rs, not cli.rs.
- Feature is called experiment_memfd_secret, not enable_memfd_alloc
This also fixes the last remaining warnings.
Implements:
- An additional allocator to use memfd_secret(2) and guard pages using mmap(2), implemented in quininer/memsec#16
- An allocator that abstracts away underlying allocators, and uses specified allocator set by rosenpass_secret_memory::policy functions (or a function that sets rosenpass_secret_memory::alloc::ALLOC_INIT
- Updates to tests- integration, fuzz, bench: some tests use procspawn to spawn multiple processes with different allocator policies
