As an co-op student at the FreeBSD Foundation, I have the unique opportunity of being encouraged to contribute to other open source projects that help make progress on FreeBSD and its components. One such project that I worked on in July is an analysis of the Capsicum test suite. This test suite targets the Capsicum capability and sandbox framework, which is included in FreeBSD since version 10.0. As described on the University of Cambridge Computer Laboratory website, “Capsicum extends the POSIX API, providing several new OS primitives to support object-capability security on UNIX-like operating systems”. Furthermore, the test suite was initially created by David Drysdale at Google while porting FreeBSD’s reference implementation of the Capsicum framework to Linux.
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