Wayland is the new hotness on the Linux graphics stack. There are plenty of introductions to Wayland that give you the high level details on how the stack is laid out how applications talk directly to the kernel with EGL and so on, but that doesn’t give you much practical knowledge. I’d like to instead share with you details about how the protocol actually works and how you can use it.
I should start this post off by clarifying that what I have to show you today is
not, in fact, generics. However, it’s useful in some situations to solve the
same problems that generics might. This is a pattern I’ve started using to
reduce the number of
void* pointers floating around in my code: multiple
definitions of a struct.
I’ve been putting this post off for a while. Do you remember the CloudFlare security problem that happened a few months ago? This is the one that disclosed huge amounts of sensitive information for huge numbers websites. When this happened, your accounts on thousands of websites were potentially compromised.
I recently saw a post on Hacker News: “Build yourself a Linux”, a cool project that guides you through building a simple Linux system. It’s similar to Linux from Scratch in that it helps you build a simple Linux system for personal use. I’d like to supplement this with some insight into my experience with a more difficult task: building a full blown Linux distribution. The result is agunix, the “silver unix” system.
Development on Sway continues. I thought we would have slowed down a lot more by now, but every release still comes with new features - Sway 0.12 added redshift support and binary space partitioning layouts. Sway 0.13.0 is coming soon and includes, among other things, nvidia proprietary driver support. We already have some interesting features slated for Sway 0.14.0, too!
I heard about CVE-2016-10229
earlier today. In a nutshell, it allows for arbitrary code execution via UDP
traffic if userspace programs are using
MSG_PEEK in their
recv calls. I
quickly updated my kernels and rebooted any boxes where necessary, but when I
read the discussions on this matter I saw people downplaying this issue by
MSG_PEEK is an obscure feature.
In the words of Doug Gwyn, “Unix was not designed to stop you from doing stupid things, because that would also stop you from doing clever things”. C is a very powerful tool, but it is to be used with care and discipline. Learning this discipline is well worth the effort, because C is one of the best programming languages ever made. A disciplined C programmer will…
I have a number of long-term projects that I plan for on long timelines, on the order of decades or more. One of these projects is cozy, a C toolchain. I haven’t talked about this project in public before, so I’ll start by introducing you to the project. The main C toolchains in the “actually usable” category are GNU and LLVM, but I’m satisfied with neither and I want to build my own toolchain. I see no reason why compilers should be deep magic. Here are my goals for cozy:
C is my favorite language, though I acknowledge that it has its warts. I’ve tried looking at languages people hope will replace C (Rust, Go, etc), and though they’ve improved on some things they won’t be supplanting C in my life any time soon. I’ll share with you what makes C a great language to me. Take some of these things as inspiration for the next C replacement you write.
I’ve found myself explaining Python 3’s str to people online more and more often lately. There’s this ridiculous claim about that Python 3’s string handling is broken or somehow worse than Python 2, and today I intend to put that myth to rest. Python 2 strings are broken, and Python 3 strings are sane. The only problem is that you don’t grok strings.