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Joachim Wiberg
0111dc2178
Replace the raw poll() + global running/reload_rules flag dance with libuev. All four signals (SIGUSR1, SIGTERM, SIGHUP, SIGCHLD) are now handled via uev_signal_init() -- libuev uses signalfd internally so the handlers run in normal main-loop context, not async signal context. The SIGCHLD handler waitpid(-1, WNOHANG) reaps any subprocess (modprobe loads, rule RUN+= helpers) instead of the old SIG_IGN auto-reap trick. Synchronous waitpid() in modprobe_load() and run_program() still works because signalfd queues the signal -- it only reaches sigchld_cb on the next main-loop iteration. The netlink receive loop becomes uevent_cb() registered via uev_io_init(), with the receive buffer passed via the watcher's arg slot (avoids file-static state). ENOBUFS and EINTR/EAGAIN are still tolerated, any other recv() error still panic()s. 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.