From f703916c3702d8f32dc535161571874cb007ca6d Mon Sep 17 00:00:00 2001 From: Laurent Bercot Date: Tue, 14 Aug 2018 20:22:43 +0000 Subject: Remove s6-devd, s6-uevent-listener, s6-uevent-spawner, prepare for 2.5.0.0 --- doc/s6-uevent-spawner.html | 87 ---------------------------------------------- 1 file changed, 87 deletions(-) delete mode 100644 doc/s6-uevent-spawner.html (limited to 'doc/s6-uevent-spawner.html') diff --git a/doc/s6-uevent-spawner.html b/doc/s6-uevent-spawner.html deleted file mode 100644 index 6f2ab87..0000000 --- a/doc/s6-uevent-spawner.html +++ /dev/null @@ -1,87 +0,0 @@ - - - - - - s6-linux-utils: the s6-uevent-spawner program - - - - - - -

-s6-linux-utils
-Software
-skarnet.org -

- -

The `s6-uevent-spawner` program

- -

-s6-uevent-spawner listens to its standard input for -netlink-style events, and launches a helper program for every event, -similarly to what the hotplug interface does. -

- -

- It is meant to be used together with -s6-uevent-listener. -

- -

-This program is deprecated, and will disappear in a -future version of s6-linux-utils. The -mdevd package makes it -obsolete. -

- -

Interface

- -

-     s6-uevent-spawner [ -v verbosity ] [ -l linevar ] [ -t l:t:k ] prog...
-

- -

s6-uevent-spawner listens to its stdin for a series of strings -representing kernel uevents, as formatted by -s6-uevent-listener.
For every event it reads, it spawns prog... with -the event variables added to the environment, just as if prog... -had been registered in /proc/sys/kernel/hotplug. However, -it reads the events sequentially, and waits for a prog instance -to finish before spawning another one.
When s6-uevent-spawner receives EOF: if an instance of -prog is alive, it first waits for it to die. Then it exits -0.

- -

Options

- -

-v verbosity : be more or less verbose. -Default verbosity is 1. 0 only prints fatal error messages. 3 is too much.
-l linevar : make the event description -(i.e. the first string in the netlink message announcing the event) -available in prog under the environment variable linevar. -By default, this first string is ignored - it is not needed, all the -event information is already in the other variables.
-t l:t:k : If l, t or k is -specified, they specify timeouts; by default, they are infinite. -If prog... is still alive after l milliseconds, s6-devd sends -it a SIGTERM. Then, if prog... is still alive after t more -milliseconds, s6-devd sends it a SIGKILL. Then, if prog... is still -alive after k more milliseconds, s6-uevent-spawner yells and exits 99.

- -

Notes

- -

The prog... helper should be very short-lived, -even if you are not using the -t option. Since helpers are -spawned sequentially, slow helpers can make events queue up and fill up -buffers.

- - - -- cgit v1.3.1

The s6-uevent-spawner program

Interface

Options

Notes

The `s6-uevent-spawner` program