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68 lines
2.9 KiB
Markdown
68 lines
2.9 KiB
Markdown
Goals of Finit
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==============
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Initially Finit aimed to be more than a processes monitor, acting as a
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replacement for cron/at and inetd as well. Over time, however, the true
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value in the project turned out to be:
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> A simple SysV init and systemd replacement, primarily for embedded
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> systems, container, and dedicated server applications.
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Near Future
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-----------
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* ... when inetd support has been removed, we can refactor the .conf
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parser, parse user input in a separate process, move process monitor
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to separate process (same as parser?), and possibly even ...
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* ... add new (complimentary) .svc file format to slowly migrate away
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from the very terse one-liner format currently used.
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* When a process dies, and Finit does not restart it, we should collect
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a `siginfo_t` from the SIGCHLD signal and supply to the user in case
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`initctl status <process>` is called to debug the issue.
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* Add `finit.conf` support for UPS notification (SIGPWR) to start a task
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using, e.g. <sys/power/{ok,fail,low}> conditions. More info in sig.c
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* Add `finit.conf` support for ctrl-alt-delete (SIGINT) and kbrequest,
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i.e. KeyboardSignal, (SIGWINCH) behavior. Using conditions to a task,
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e.g, <sys/key/ctrlaltdel> and <sys/key/signal> like SIGPWR handling.
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* Write man pages for finit and `finit.conf`, steal from the excellent
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`pimd` man pages ...
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General
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-------
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* Add support for timed shutdown in Finit, including cancelled shutdown,
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possibly using an at-job, see [crond section](#Crond) below
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* Add support for JSON output, or similar, from `initctl show`, e.g.
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`initctl show --json`
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* [Solaris SMF][] (Service Management Facility) has some interesting
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features that may be well worth looking into adopting:
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svcs enable -rt svc:/network/ssh:default
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That is: (r)esolve dependencies and only enable ssh (t)emporary
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in the default runlevel when networking is available.
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* `initctl add /sbin/service -n -- Service description`, for details
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see above [Solaris SMF][] featuer, issue #55 and issue #69,
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https://github.com/troglobit/finit/issues/69#issuecomment-287907610
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* Changing the name of a pidfile, `pid:[/path/]file.pid`, after a
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service has been started is not supported atm. The previous name will
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not be (never) removed and the new name will not be created until the
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process has been stopped and started again.
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* PID files created in subdirectories to `/run` is not supported right
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now inotify listeners should be automatically created (and removed)
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when a subdirectory is added (or removed).
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[Solaris SMF]: http://www.oracle.com/technetwork/articles/servers-storage-admin/intro-smf-basics-s11-1729181.html
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Init
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----
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Finit in itself is not SysV Init compatible, it doesn't use `/etc/rc.d`
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and `/etc/init.d` scripts to boot the system. However, a plausible way
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to achieve compatibility would be to add a plugin to finit which reads
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`/etc/inittab` to be able to start standard Linux systems.
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