diff options
author | Warner Losh <imp@FreeBSD.org> | 2020-09-22 23:01:44 +0000 |
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committer | Warner Losh <imp@FreeBSD.org> | 2020-09-22 23:01:44 +0000 |
commit | a329c23eb755a8abb594e4f86510c971f332e238 (patch) | |
tree | d472ce447108a9d98e7dd539fef9b523a01e0b30 /share/man/man9 | |
parent | 1f305be431e07cfe5a40b3140775238ef44cdcbb (diff) | |
download | src-a329c23eb755a8abb594e4f86510c971f332e238.tar.gz src-a329c23eb755a8abb594e4f86510c971f332e238.zip |
Add a devctl_process_running man page.
Reviewed by: bcr
Differential Revision: https://reviews.freebsd.org/D26520
Notes
Notes:
svn path=/head/; revision=366024
Diffstat (limited to 'share/man/man9')
-rw-r--r-- | share/man/man9/Makefile | 1 | ||||
-rw-r--r-- | share/man/man9/devctl_process_running.9 | 60 |
2 files changed, 61 insertions, 0 deletions
diff --git a/share/man/man9/Makefile b/share/man/man9/Makefile index 7ca253de698e..979f076277e1 100644 --- a/share/man/man9/Makefile +++ b/share/man/man9/Makefile @@ -121,6 +121,7 @@ MAN= accept_filter.9 \ DEVICE_SHUTDOWN.9 \ DEV_MODULE.9 \ dev_refthread.9 \ + devctl_process_running.9 \ devstat.9 \ devtoname.9 \ disk.9 \ diff --git a/share/man/man9/devctl_process_running.9 b/share/man/man9/devctl_process_running.9 new file mode 100644 index 000000000000..69549015d441 --- /dev/null +++ b/share/man/man9/devctl_process_running.9 @@ -0,0 +1,60 @@ +.\" +.\" Copyright (c) 2020 M Warner Losh +.\" +.\" This program is free software. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR +.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES +.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. +.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT, +.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF +.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd September 22, 2020 +.Dt DEVCTL_PROCESS_RUNNING 9 +.Os +.Sh NAME +.Nm devctl_process_running +.Nd Returns true when devctl has a consumer process running +.Sh SYNOPSIS +.In sys/devctl.h +.Ft bool +.Fn devctl_process_running "void" +.Sh DESCRIPTION +The +.Nm +call returns +.Vt true +when a process has the devctl device open for +reading, and +.Vt false +otherwise. +One can assume from this that the default +.Xr devd 8 +or similar is running when +.Vt 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. +.Sh SEE ALSO +.Xr devd 8 +.Sh AUTHORS +This manual page was written by +.An M. Warner Losh |