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96: Lost Technology
Coming up this week, we'll be talking with Jun Ebihara about some lesser-known CPU architectures in NetBSD. He'll tell us what makes these old (and often forgotten) machines so interesting. As usual, we've also got answers to your emails and all this week's news on BSD Now - the place to B.. SD.
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Out with the old, in with the less
- Our friend Ted Unangst has a new article up, talking about "various OpenBSD replacements and reductions"
- "Instead of trying to fix known bugs, we’re trying to fix unknown bugs. It’s not based on the current buggy state of the code, but the anticipated future buggy state of the code. Past bugs are a bigger factor than current bugs."
- In the post, he goes through some of the bigger (and smaller) examples of OpenBSD rewriting tools to be simpler and more secure
- It starts off with a lesser-known SCSI driver that "tried to do too much" being replaced with three separate drivers
- "Each driver can now be modified in isolation without unintentional side effects on other hardware, or the need to consider if and where further special cases need to be added. Despite the fact that these three drivers duplicate all the common boilerplate code, combined they only amount to about half as much code as the old driver."
- In contrast to that example, he goes on to cite mandoc as taking a very non "unixy" direction, but at the same time being smaller and simpler than all the tools it replaced
- The next case is the new http daemon, and he talks a bit about the recently-added rewrite support being done in a simple and secure way (as opposed to regex and its craziness)
- He also talks about the rewritten "file" utility: "Almost by definition, its sole input will be untrusted input. Perversely, people will then trust what file tells them and then go about using that input, as if file somehow sanitized it."
- Finally, sudo in OpenBSD's base system is moving to ports soon, and the article briefly describes a new tool that may or may not replace it, called "doas"
- There's also a nice wrap-up of all the examples at the end, and the "Pruning and Polishing" talk is good complementary reading material ***
More OpenZFS and BSDCan videos
- We mentioned last week that some of the videos from the second OpenZFS conference in Europe were being uploaded - here's some more
- Matt Ahrens did a Q&A session and talked about ZFS send and receive, as well as giving an overview of OpenZFS
- George Wilson talked about a performance retrospective
- Toshiba, Published on 10 years, 5 months ago