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Reindent to more 'pure' Markdown and remove fixed event lib TODO.
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
This commit is contained in:
Joachim Nilsson
@@ -3,13 +3,13 @@ Goals of Finit
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The intent of finit is to monitor not just processes, but to supervise
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an entire system and the behavior of certain processes that declare
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themselves to be finit compliant. Similiar to launchd, the goal of
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themselves to be finit compliant. Similar to launchd, the goal of
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finit is to be a replacement for:
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* init
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* inetd
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* crond
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* watchdogd
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* init
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* inetd
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* crond
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* watchdogd
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A small and simple replacement, primarily for embedded systems, with a
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very low dependency on external packages.
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@@ -17,26 +17,18 @@ very low dependency on external packages.
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General
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-------
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* Integrate libev, or libuEv, to handle events: signals, I/O, etc.
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"Event driven software improves concurrency" -- Dave Zarzycki, Apple
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See the [launchd video](http://www.youtube.com/watch?v=cD_s6Fjdri8)
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for more info!
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See uftpd for how libuEv can be easily integrated as a submodule.
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* Add support for `init <q | reload-configuration>` and `SIGHUP` to
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have finit reload its `finit.conf`, but also
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* Add support for inotify to automatically reload `finit.conf`
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* Implement `initctl stop|start|restart|reload|status <SVC>` and
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`service <SVC> stop|start|restart|reload|status` on top
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* Add PRE and POST hooks for when switching between runlevels
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* Add support for `init -v,--version | version`
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* Cleanup move sources from top-level directory to `src/` and `include/`
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* Make sure to install `queue.h` to `$(PREFIX)/include/finit/queue.h`
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* Move `finit.conf` "check" command to plugin which checks `/etc/fstab`
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instead. This is the de-facto practice. But keep the check command
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for really low-end systems w/o `/etc/fstab`.
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* Add support for `init <q | reload-configuration>` and `SIGHUP` to
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have finit reload its `finit.conf`, but also
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* Add support for inotify to automatically reload `finit.conf`
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* Implement `initctl stop|start|restart|reload|status <SVC>` and
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`service <SVC> stop|start|restart|reload|status` on top
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* Add PRE and POST hooks for when switching between runlevels
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* Add support for `init -v,--version | version`
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* Cleanup move sources from top-level directory to `src/` and `include/`
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* Make sure to install `queue.h` to `$(PREFIX)/include/finit/queue.h`
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* Move `finit.conf` "check" command to plugin which checks `/etc/fstab`
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instead. This is the de-facto practice. But keep the check command
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for really low-end systems w/o `/etc/fstab`.
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Init
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@@ -45,7 +37,7 @@ Init
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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/inet.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` and starts standard Linux systems.
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`/etc/inittab` to be able to start standard Linux systems.
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Inetd
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@@ -65,7 +57,7 @@ to each inetd service. When a client connects the finit will call the
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callback with a `struct in_pktinfo` argument which the callback then can
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allowed or deny.
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Alternatively, borrowing from TCP wrappers by Wietse Wenema, a set of
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Alternatively, borrowing from TCP wrappers by Wietse Venema, a set of
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`allow` and `deny` directives can be added to `finit.conf` to control
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inetd services. It could be what IP addreses, networks or interfaces
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are allowed to connect to the given inetd services. To start with the
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@@ -109,8 +101,8 @@ Crond
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Requirements are quite rudimentary, basic cron functionality, mainly
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system-level timed periodic tasks:
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* Periodically run a task, in a matching runlevel
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* Optionally run as non-root (`crontab -e` as operator)
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* Periodically run a task, in a matching runlevel
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* Optionally run as non-root (`crontab -e` as operator)
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Proposed syntax:
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@@ -139,35 +131,35 @@ Watchdog
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Support for monitoring the health of the system and its processes.
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* Add support for a `/dev/watchdog` plugin to replace `watchdogd`
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* Integrate system supervisor to optionally reboot the system when a
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process stops responding, or when a respawn limit has been reached,
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as well as when system load gets too high.
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* API for processes to register with the watchdog.
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- Deeper monitoring of a process main loop
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- If a process is not heard from within its subscribed period time
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reboot system or restart process.
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* Separate `/etc/watchdog.conf` configuration file, or a perhaps
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support for `/etc/finit.d/PLUGIN.conf`?
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* Support enable/disable watchdog features:
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- Supervise processes,
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- CPU loadavg,
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- Watch for file descriptor leaks,
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- etc.
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* Add support for a `/dev/watchdog` plugin to replace `watchdogd`
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* Integrate system supervisor to optionally reboot the system when a
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process stops responding, or when a respawn limit has been reached,
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as well as when system load gets too high.
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* API for processes to register with the watchdog.
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- Deeper monitoring of a process main loop
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- If a process is not heard from within its subscribed period time
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reboot system or restart process.
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* Separate `/etc/watchdog.conf` configuration file, or a perhaps
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support for `/etc/finit.d/PLUGIN.conf`?
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* Support enable/disable watchdog features:
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- Supervise processes,
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- CPU loadavg,
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- Watch for file descriptor leaks,
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- etc.
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Documentation
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-------------
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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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* Update Debian `finit.conf` example with runlevels, `tty/console` and
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dependency handling for Debian 8 (the dreaded systemd release).
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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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* Update Debian `finit.conf` example with runlevels, `tty/console` and
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dependency handling for Debian 8 (the dreaded systemd release).
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Investigation
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-------------
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* [FHS changes](http://askubuntu.com/questions/57297/why-has-var-run-been-migrated-to-run)
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affecting runtime status, plugins, etc.
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* [FHS changes](http://askubuntu.com/questions/57297/why-has-var-run-been-migrated-to-run)
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affecting runtime status, plugins, etc.
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