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Command: devctl_process_running | Section: 9 | Source: FreeBSD | File: devctl_process_running.9.gz
DEVCTL_PROCESS_RUNNING(9) FreeBSD Kernel Developer's Manual
NAME
devctl_process_running - Returns true when devctl has a consumer process
running
SYNOPSIS
#include <sys/devctl.h>
bool
devctl_process_running(void);
DESCRIPTION
The devctl_process_running call returns true when a process has the
devctl device open for reading, and false otherwise. One can assume from
this that the default devd(8) or similar is running when true is
returned. Some subsystems will send a message and allow userland to do
something before proceeding with a default action if there's a timeout.
This call allows those subsystems to do the default action right away
when no process is running.
SEE ALSO
devd(8)
AUTHORS
This manual page was written by M. Warner Losh
FreeBSD 14.1-RELEASE-p8 September 22, 2020 FreeBSD 14.1-RELEASE-p8