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Daniel Barlow 2024-07-10 21:23:24 +01:00
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@ -42,7 +42,7 @@ in a particular piece of hardware) so you probably don't want to be
starting them by hand if the conditions aren't there. starting them by hand if the conditions aren't there.
A service may be **up** or **down** (there are no intermediate states A service may be **up** or **down** (there are no intermediate states
like "started" or "stopping" or "dying" or "cogitating"). . Some (but like "started" or "stopping" or "dying" or "cogitating"). Some (but
not all) services have "readiness" notifications: the dependents of a not all) services have "readiness" notifications: the dependents of a
service with a readiness notification won't be started until the service with a readiness notification won't be started until the
service signals (by writing to a nominated file descriptor) that it's service signals (by writing to a nominated file descriptor) that it's
@ -56,13 +56,14 @@ automatically. Liminix does not automatically set it to **down**.
(If the process providing a service dies without ever notifying (If the process providing a service dies without ever notifying
readiness, Liminix will restart it as many times as it has to until the readiness, Liminix will restart it as many times as it has to until the
timeout period elapses, and then stop it and mark it down. timeout period elapses, and then stop it and mark it down.)
Controlled services Controlled services
=================== ===================
**Controlled** services are those which are started/stopped on demand **Controlled** services are those which are started/stopped on demand
by a controller instead of being started at boot time. For example by a **controller** (another service) instead of being started at boot
time. For example:
* ``svc.uevent-rule.build`` creates a controlled service which is * ``svc.uevent-rule.build`` creates a controlled service which is
active when a particular hardware device (identified by uevent/sysfs active when a particular hardware device (identified by uevent/sysfs