LWN.net

LWN.net is an online magazine focused on computing, particularly highlighting free software and applications for Linux and various Unix-like systems. The site features a weekly edition, along with daily stories that provide concise summaries of articles from other sources, all of which are accessible to everyone at no cost. Original content is typically released every Thursday and is exclusively available to subscribers for the first two weeks. After this period, the articles are made available for free to all readers. LWN.net operates under Eklektix, Inc.

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Some __nonstring__ turbulence

2 weeks ago | lwn.net | Jonathan Corbet

By Jonathan CorbetApril 24, 2025 6.15-rc3kernel release and the implementation of-Wunterminated-string-initialization in GCC 15. Consider a C declaration like: char foo[8] = "bar";The array will be initialized with the given string, including the normaltrailing NUL byte indicating the end of the string. Now consider thisvariant: char foo[8] = "NUL-free";This is a legal declaration, even though the declared array now lacks theroom for the NUL byte.
Lessons from open source in the Mexican government

1 month ago | lwn.net | Jake Edge

Benefits for LWN subscribersThe primary benefit from subscribing to LWN is helping to keep us publishing, but, beyond that, subscribers get immediate access to all site content and access to a number of extra site features. Please sign up today!The adoption of open-source software in governments has had its ups anddowns. While open source seems like a "no-brainer", it turns out thatgovernments can be surprisingly resistant to using FOSS for a variety ofreasons.
Resistance to Rust abstractions for DMA mapping

Feb 4, 2025 | lwn.net | Jonathan Corbet

The following subscription-only content has been made available to you by an LWN subscriber. Thousands of subscribers depend on LWN for the best news from the Linux and free software communities. If you enjoy this article, please consider subscribing to LWN. Thank youfor visiting LWN.net! By Jonathan CorbetJanuary 30, 2025 DMA transfers move data directly between RAM and the device of interest,without involving the CPU.
Chimera Linux works toward a simplified desktop

Jan 25, 2025 | lwn.net | Daroc Alden

Benefits for LWN subscribersThe primary benefit from subscribing to LWN is helping to keep us publishing, but, beyond that, subscribers get immediate access to all site content and access to a number of extra site features. Please sign up today! By Daroc AldenJanuary 13, 2025 Chimera Linux is a new distributiondesigned to be "simple, transparent, and easy to pick up". Thedistribution is built from scratch, andrecently announced its first beta release.
Some things to expect in 2025

Jan 16, 2025 | lwn.net | Jonathan Corbet

This article brought to you by LWN subscribersSubscribers to LWN.net made this article — and everything that surrounds it — possible. If you appreciate our content, please buy a subscription and make the next set of articles possible. By Jonathan CorbetJanuary 2, 2025 not howthe year will actually go. We have to try; it's traditional, after all. Read on for our view of what's coming and how it may play out. The extensible scheduling class (sched-ext) will be a game changer.
Debian opens a can of username worms

Dec 6, 2024 | lwn.net | Joe Brockmeier

The following subscription-only content has been made available to you by an LWN subscriber. Thousands of subscribers depend on LWN for the best news from the Linux and free software communities. If you enjoy this article, please consider accepting the trial offer on the right. Thank youfor visiting LWN.net! Try LWN for free for 1 month: no payment or credit card required. Activate your trial subscription now and see why thousands of readers subscribe to LWN.net.
The trouble with struct sockaddr's fake flexible array

Nov 28, 2024 | lwn.net | Jonathan Corbet

Please consider subscribing to LWNSubscriptions are the lifeblood of LWN.net. If you appreciate thiscontent and would like to see more of it, your subscription willhelp to ensure that LWN continues to thrive. Please visitthis page to join up and keep LWN onthe net. By Jonathan CorbetNovember 7, 2024 counted-by work, havebeen made, one of the most difficult cases remains.
Truly portable C applications

Nov 22, 2024 | lwn.net | Daroc Alden

Please consider subscribing to LWNSubscriptions are the lifeblood of LWN.net. If you appreciate thiscontent and would like to see more of it, your subscription willhelp to ensure that LWN continues to thrive. Please visitthis page to join up and keep LWN onthe net. By Daroc AldenNovember 13, 2024 Note: This topic was chosen based on the technical merit of theproject before we were aware of its author's political views andcontroversies.
Safety in an unsafe world

Nov 16, 2024 | lwn.net | Daroc Alden

Ready to give LWN a try? With a subscription to LWN, you can stay current with what is happening in the Linux and free-software community and take advantage of subscriber-only site features. We are pleased to offer you a free trial subscription, no credit card required, so that you can see for yourself.
Kernel optimization with BOLT

Nov 5, 2024 | lwn.net | Jake Edge

The following subscription-only content has been made available to you by an LWN subscriber. Thousands of subscribers depend on LWN for the best news from the Linux and free software communities. If you enjoy this article, please consider subscribing to LWN. Thank youfor visiting LWN.net!A pair of talks in the toolchainstrack at the 2024 LinuxPlumbers Conference covered different tools that can be used tooptimize the kernel.