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Since RIOT is an operating system the native binary will never terminate [0]. The termination condition for fuzzing GNRC is that the packet was handled by the network stack and therefore freed. If it is never freed we will deadlock meaning a memory leak was found, afl should be able to detect this through timeouts. This is currently only supported for gnrc_pktbuf_malloc since this is the pktbuf implementation I used for fuzzing. Implementing this in pktbuf.h is not possible. [0]: Except NATIVE_AUTO_EXIT is defined, however, even with that define set RIOT will only terminate when all threads terminated. Unfortunately, gnrc_udp and other network threads will never terminate.
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The friendly Operating System for IoT!
RIOT is a real-time multi-threading operating system that supports a range of devices that are typically found in the Internet of Things (IoT): 8-bit, 16-bit and 32-bit microcontrollers.
RIOT is based on the following design principles: energy-efficiency, real-time capabilities, small memory footprint, modularity, and uniform API access, independent of the underlying hardware (this API offers partial POSIX compliance).
RIOT is developed by an international open source community which is independent of specific vendors (e.g. similarly to the Linux community). RIOT is licensed with LGPLv2.1, a copyleft license which fosters indirect business models around the free open-source software platform provided by RIOT, e.g. it is possible to link closed-source code with the LGPL code.
FEATURES
RIOT is based on a microkernel architecture, and provides features including, but not limited to:
- a preemptive, tickless scheduler with priorities
- flexible memory management
- high resolution, long-term timers
- support 100+ boards based on AVR, MSP430, ESP8266, ESP32, MIPS, RISC-V, ARM7 and ARM Cortex-M
- the native port allows to run RIOT as-is on Linux, BSD, and MacOS. Multiple instances of RIOT running on a single machine can also be interconnected via a simple virtual Ethernet bridge
- IPv6
- 6LoWPAN (RFC4944, RFC6282, and RFC6775)
- UDP
- RPL (storing mode, P2P mode)
- CoAP
- CCN-Lite
- Sigfox
- LoRaWAN
GETTING STARTED
- You want to start the RIOT? Just follow our quickstart guide or try this tutorial. For specific toolchain installation, follow instructions in the getting started page.
- The RIOT API itself can be built from the code using doxygen. The latest version of the documentation is uploaded daily to riot-os.org/api.
USING THE NATIVE PORT WITH NETWORKING
If you compile RIOT for the native cpu and include the netdev_tap module,
you can specify a network interface like this: PORT=tap0 make term
SETTING UP A TAP NETWORK
There is a shell script in RIOT/dist/tools/tapsetup called tapsetup which
you can use to create a network of tap interfaces.
USAGE
To create a bridge and two (or count at your option) tap interfaces:
sudo ./dist/tools/tapsetup/tapsetup [-c [<count>]]
CONTRIBUTE
To contribute something to RIOT, please refer to our contributing document.
MAILING LISTS
- RIOT OS kernel developers list
- devel@riot-os.org (https://lists.riot-os.org/mailman/listinfo/devel)
- RIOT OS users list
- users@riot-os.org (https://lists.riot-os.org/mailman/listinfo/users)
- RIOT commits
- commits@riot-os.org (https://lists.riot-os.org/mailman/listinfo/commits)
- Github notifications
- notifications@riot-os.org (https://lists.riot-os.org/mailman/listinfo/notifications)
LICENSE
- Most of the code developed by the RIOT community is licensed under the GNU Lesser General Public License (LGPL) version 2.1 as published by the Free Software Foundation.
- Some external sources, especially files developed by SICS are published under a separate license.
All code files contain licensing information.
For more information, see the RIOT website: