![]() ![]() Some of the most useful CMake definitions you may want to use are: Then, try to follow the steps in our official Falco documentation. Forking the repositories first is recommended if you want to later push the changes and save your work. You can fork falco and libs, and clone them into your development machine. Most of the time, the main starting point for developing something is building it from scratch. If you're not yet familiar with the overall Falco architecture, you can go into detail by reading the previous blog post. falcosecurity/falco, including the rule engine, rules, and support for any kind of output, such as standard output, file output, gRPC, and more.falcosecurity/libs, containing both the kernel module and the eBPF probe, and also libscap and libsinsp.The two repositories you should take a look at are: Falco's source code lives in the Falco organization on GitHub. You can open remote folders and projects, and use all the functionalities of Visual Studio Code! Discovering the Falco code Your development environment is now up and running. Press Enter and you will see the falco-dev entry in the UI to connect to the VM. Press Control + P (or Command + P on MacOS) and type > Remote-SSH: Connect to Host. Something like Host falco-dev would work. Also, we recommend changing the Host default line with something that helps you remember that this is the VM you use for developing Falco. ssh/config file in your local home directory. IdentityFile /Users/lorenzo.susini/vagrant/official-ubuntu/.vagrant/machines/default/virtualbox/private_keyĬopy the output of the last command and paste it into the. This includes the VM you just spawned with Vagrant.Īfter installing the extension, from inside the Vagrant VM directory, retrieve the SSH configuration: $ vagrant ssh-config This extension lets you use any remote machine that allows SSH access as your development environment. To do so, we will show you how to extend Visual Studio Code capabilities by downloading the Remote - SSH extension. However, unless you prefer writing code on older (but very powerful) tools like Vim, you may feel the need to use an IDE, as if you were developing on your local machine. This way, you will be able to seamlessly code, build, and test on the Vagrant virtual machine!įrom now on, the command vagrant ssh will log you into the VM and you could start working right away. This helps in case you also want to try out remote development, for instance with Visual Studio Code. Vagrant initializes virtual machines so that you can easily access them via SSH. Once you can spawn VMs with Vagrant, choose a box from Vagrant Cloud containing your favorite distribution for development.įor instance, if you want to launch a Ubuntu Focal Fossa machine, you can issue the following commands: You can follow the Vagrant quickstart to accomplish this. You may want to install VirtualBox since Vagrant comes with out-of-the-box support. If you have never used Vagrant before, you first need to download and install Vagrant and a Vagrant VM provider. Vagrant is a tool that allows you to easily spawn virtual machines, so that you can test your code against multiple kernel versions and Linux distributions without causing any harm to your system. On the other hand, eBPF programs are much safer than the kernel module, but sometimes you may need to fight against the verifier on different kernel versions.įor these reasons, some of us find using Vagrant extremely helpful. Any little mistake may result in a kernel panic, crashing the system. In particular, the kernel module requires extra care because your code will run with full kernel privileges. Writing code at the kernel-level is not an easy task. An important consideration to make, even before starting to code, is that the eBPF probe and the kernel module should provide exactly the same features.įor this reason, when developing something on the eBPF probe, you should implement the same functionality on the kernel module and vice versa, with the intent of preserving feature parity across the two drivers. We hope this table of contents will facilitate the use of this post as a future reference.Ī peculiarity of the Falco project is that you may need to write some kernel-level code. Now, let's go step by step, showing what is required to get started hacking on Falco. This blog post will walk you through the process of setting up a new one so that you can feel comfortable and ready to contribute! Whether you want Falco to monitor a new system call, add a brand new feature, or solve a problem you ran into, you have to create a development environment. Interested in Falco and want to contribute your ideas? Feeling stuck because you don't know where to start? No worries, we are here to help! ![]()
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