First draft

[0152la]

Includes work in progress of minimal required ELF loader, with basic memory management, and compartmentalization manager.

The main components are as follows:

• compartment.c - source code for internal compartment functionality, including loading a compartment, mapping, executing, and others. Essentially an ELF loader, targetting static ELF executables (currently hard-coded for executables pre-compiled to the loaded at address 0x1000000 in memory);
• mem_mng.c - utilities to do with memory management of compartments. We intercept calls to malloc, realloc, and free in the loaded compartments and redirect them to corresponding functions in this file, to perform memory operations outside of the compartment;
• manager.c - overarching wrapper, holding information about the execution state, managing compartments, and other needed miscellaneous stuff.

In addition, a number of tests are provided to assess functionality. The most current ones are lua_simple.c, which performs some basic lua operations, and hello_world_comps.c, which creates a compartment from a compiled variant of the aforementioned executable and attempts to execute it.

As this is a work-in-progress, things are broken, and very in flux.

[ltratt]

bors r+

[bors[bot]]

Build succeeded:

• buildbot/capablevms-test-script