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24.Dd September 22, 2020
25.Dt DEVCTL_PROCESS_RUNNING 9
26.Os
27.Sh NAME
28.Nm devctl_process_running
29.Nd Returns true when devctl has a consumer process running
30.Sh SYNOPSIS
31.In sys/devctl.h
32.Ft bool
33.Fn devctl_process_running "void"
34.Sh DESCRIPTION
35The
36.Nm
37call returns
38.Vt true
39when a process has the devctl device open for
40reading, and
41.Vt false
42otherwise.
43One can assume from this that the default
44.Xr devd 8
45or similar is running when
46.Vt true
47is returned.
48Some subsystems will send a message and allow userland to do something
49before proceeding with a default action if there's a timeout.
50This call allows those subsystems to do the default action right away
51when no process is running.
52.Sh SEE ALSO
53.Xr devd 8
54.Sh AUTHORS
55This manual page was written by
56.An M. Warner Losh
57