CheriBSD extends FreeBSD to implement memory protection and software compartmentalization features supported by the CHERI ISA. CheriBSD includes support for CHERI extensions to the MIPS and RISC-V architectures. To build and run CheriBSD we recommend using the cheribuild script.
For information on our branching model, updates, and flag days, please read CHERI-UPDATING.md.
The CheriBSD web page can be found here: http://www.cl.cam.ac.uk/research/security/ctsrd/cheri/cheribsd.html
The Qemu-CHERI web page may also be useful: http://www.cl.cam.ac.uk/research/security/ctsrd/cheri/cheri-qemu.html
More information about CHERI can be found on http://cheri-cpu.org and in the following Technical Reports:
An Introduction to CHERI https://www.cl.cam.ac.uk/techreports/UCAM-CL-TR-941.pdf
Capability Hardware Enhanced RISC Instructions: CHERI Instruction-Set Architecture https://www.cl.cam.ac.uk/techreports/UCAM-CL-TR-927.pdf
CHERI C/C++ Programming Guide https://www.cl.cam.ac.uk/techreports/UCAM-CL-TR-947.pdf
This is the top level of the FreeBSD source directory. This file
was last revised on:
FreeBSD is an operating system used to power modern servers, desktops, and embedded platforms. A large community has continually developed it for more than thirty years. Its advanced networking, security, and storage features have made FreeBSD the platform of choice for many of the busiest web sites and most pervasive embedded networking and storage devices.
For copyright information, please see the file COPYRIGHT in this directory. Additional copyright information also exists for some sources in this tree - please see the specific source directories for more information.
The Makefile in this directory supports a number of targets for building components (or all) of the FreeBSD source tree. See build(7), config(8), https://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/makeworld.html, and https://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig.html for more information, including setting make(1) variables.
bin System/user commands.
cddl Various commands and libraries under the Common Development
and Distribution License.
contrib Packages contributed by 3rd parties.
crypto Cryptography stuff (see crypto/README).
etc Template files for /etc.
gnu Various commands and libraries under the GNU Public License.
Please see gnu/COPYING* for more information.
include System include files.
kerberos5 Kerberos5 (Heimdal) package.
lib System libraries.
libexec System daemons.
release Release building Makefile & associated tools.
rescue Build system for statically linked /rescue utilities.
sbin System commands.
secure Cryptographic libraries and commands.
share Shared resources.
stand Boot loader sources.
sys Kernel sources.
sys/<arch>/conf Kernel configuration files. GENERIC is the configuration
used in release builds. NOTES contains documentation of
all possible entries.
tests Regression tests which can be run by Kyua. See tests/README
for additional information.
tools Utilities for regression testing and miscellaneous tasks.
usr.bin User commands.
usr.sbin System administration commands.
For information on synchronizing your source tree with one or more of the FreeBSD Project's development branches, please see:
https://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/current-stable.html