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Dynamic Users with systemd

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Red Hat
Software

Today we released systemd 235. Among other improvements this greatly extends the dynamic user logic of systemd. Dynamic users are a powerful but little known concept, supported in its basic form since systemd 232. With this blog story I hope to make it a bit better known.

The UNIX user concept is the most basic and well-understood security concept in POSIX operating systems. It is UNIX/POSIX' primary security concept, the one everybody can agree on, and most security concepts that came after it (such as process capabilities, SELinux and other MACs, user name-spaces, …) in some form or another build on it, extend it or at least interface with it. If you build a Linux kernel with all security features turned off, the user concept is pretty much the one you'll still retain.

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Android Leftovers

Zephyr Project Embraces RISC-V with New Members and Expanded Board Support

The Linux Foundation’s Zephyr Project, which is developing the open source Zephyr real-time operating system (RTOS) for microcontrollers, announced six new members, including RISC-V members Antmicro and SiFive. The project also announced expanded support for developer boards. Zephyr is now certified to run 100 boards spanning ARM, x86, ARC, NIOS II, XTENSA, and RISCV32 architectures. Antmicro, SiFive, and DeviceTone, which makes IoT-savvy smart clients, have signed up as Silver members, joining Oticon, runtime.io, Synopsys, and Texas Instruments. The other three new members -- Beijing University of Posts and Telecommunications, The Institute of Communication and Computer Systems (ICCS), and Northeastern University – have joined the Vancouver Hack Space as Associate members. Read more