Aaron Andersen e6d3eb2526 Handle already-mounted cgroups in cgroup_init()
Add handling for EBUSY when mounting cgroup2 filesystem, which occurs
when cgroups are already mounted. This can happen after switch_root
when cgroups were moved from the initramfs, or in container environments.

Verify the existing mount is actually cgroup2 before proceeding, and
track whether we mounted to avoid unmounting on error if we didn't.
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License Badge Release Badge GitHub Status Coverity Status Finit: Fast Init

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

Alpine screenshot

For working examples, see the 🚀 contrib/ section or these tutorials:

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.

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