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Joachim Wiberg
0a269f3298
Finit had no way to answer the question every service manager gets asked: what is running, and change it. D-Bus is how the rest of userspace asks, but linking libdbus, sd-bus or GIO into PID 1 buys a dependency, an allocator and a main loop we do not control. So libink: the wire format, an object tree, and a bus of Finit's own at /run/finit/bus, gated like INIT_SOCKET. It speaks the standard org.freedesktop.DBus, .Peer, .Introspectable interfaces, and Finit's own Manager1, Service1 and Cond1 on top. Methods that change something are marked privileged and answered only for a caller the kernel vouched for, via SO_PEERCRED. Server and client both, since initctl is the first thing that needs to talk to it, and its Start/Stop/Restart/Reload now go over the bus rather than the legacy socket. Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
Finit is a fast, simple alternative to SysV init and systemd, designed for small and embedded Linux systems. It can also run on desktop and server systems, like finix.
Reverse engineered from the EeePC fastinit
"gaps filled with frog DNA …"
— Claudio Matsuoka
For detailed information, explore our extensive documentation
📚 http://finit-project.github.io
For working examples, see the 🚀 contrib/ section or these tutorials:
- 🛠️ Buildroot embedded Linux,
- 📦 Debian GNU/Linux,
- ⛰️ Alpine Linux, and
- 🌌 Void Linux
Note
Finit can run on various Linux distributions, but the bundled install scripts are examples only. They have been tested on amd64 (x86_64) systems with standard configurations.
For embedded systems, see these Buildroot-based examples: myLinux, Infix, or br2-finit-demo.