wt/finit

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Joachim Wiberg c584795202 doc: fix back-references and stale claims left by the conversion

Reference sections kept pointing at the line-based format they no longer
document.  `sysv` and `task` sent the reader to Services for "<COND>",
the cgroups chapter opened by listing three legacy directives and then
explained further down that only two of them exist here, and the logging
chapter still gave "log:prio:facility.level,tag:ident" as the full
syntax.

Some claims were wrong independent of the format:

  - a sysv is a supervised daemon, grouped with service in
    SVC_TYPE_DAEMON, not a variation on task
  - restart-max has no upper bound of 255, or any other
  - the built-in rescue fallback runs in 12345789, not 12345
  - conditional loading quotes system/10-hotplug.conf, not
    system/hotplug.conf
  - the key spells conflicts, not conflict
  - the built-in getty no longer wants TERM last, it is a key

`if` takes either a service name or, in angle brackets, a condition,
decided in svc_ifthen().  Only the examples showed this, so it is now
said.

Terminology follows the split index.md already draws: a block is the new
format, a stanza the line-based one.

src/rescue.conf was still line-based, missed because it sits in src/
rather than system/ or contrib/.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>

2026-07-30 15:23:35 +02:00

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Templating

Finit comes with rudimentary support for templating, similar to that of systemd. Best illustrated with an example:

$ initctl show avahi-autoipd@
service avahi-autoipd:%i {
    description = "ZeroConf for %i"
    command     = "avahi-autoipd --syslog %i"
}

To enable ZeroConf for, e.g., eth0, use

$ initctl enable avahi-autoipd@eth0.conf

The enabled symlink will be set up to avahi-autoipd@.conf and every instance of %i will be replaced with eth0 before the file is parsed, so it works in the block title, in any value, and in the command line alike. Inspect the result with initctl show avahi-autoipd:eth0, and check a running instance with:

$ initctl status avahi-autoipd:eth0
     Status : running
   Identity : avahi-autoipd:eth0
Description : ZeroConf for eth0
     Origin : /etc/finit.d/enabled/avahi-autoipd@eth0.conf
Environment : -/etc/default/avahi-autoipd-eth0
    Command : avahi-autoipd $AVAHI_AUTOIPD_ARGS eth0
   PID file : /run/avahi-autoipd.eth0.pid
        PID : 4190
       User : root
      Group : root
     Uptime : 24 sec
   Restarts : 0 (0/10)
  Runlevels : [---2345-789]
     Memory : 20.0k
     CGroup : /system/avahi-autoipd@eth0 cpu 0 [100, max] mem [0, max]
              └─ 4190 avahi-autoipd: [eth0] bound 169.254.1.9  

Jul  8 11:51:42 infix-c0-ff-ee finit[1]: Starting avahi-autoipd:eth0[4190]

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Templating

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