68 lines
2.0 KiB
Groff
68 lines
2.0 KiB
Groff
|
.\" Copyright (c) 2002 Tim J. Robbins
|
||
|
|
.\" All rights reserved.
|
||
|
|
.\"
|
||
|
|
.\" 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 AUTHOR AND CONTRIBUTORS ``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 AUTHOR OR CONTRIBUTORS 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 January 14, 2003
|
||
|
|
.Dt SEM 4
|
||
|
|
.Os
|
||
|
|
.Sh NAME
|
||
|
|
.Nm sem
|
||
|
|
.Nd POSIX semaphores
|
||
|
|
.Sh SYNOPSIS
|
||
|
|
To link into the kernel:
|
||
|
|
.Cd "options P1003_1B_SEMAPHORES"
|
||
|
|
.Pp
|
||
|
|
To load as a kernel loadable module:
|
||
|
|
.Dl kldload sem
|
||
|
|
.Sh DESCRIPTION
|
||
|
|
The
|
||
|
|
.Nm
|
||
|
|
facility provides system calls used by the C library
|
||
|
|
.Pq Pa libc
|
||
|
|
to implement
|
||
|
|
.Tn POSIX
|
||
|
|
semaphores.
|
||
|
|
It is available both as a kernel option for static inclusion and as a
|
||
|
|
dynamic kernel module.
|
||
|
|
.Sh SEE ALSO
|
||
|
|
.Xr sem_destroy 3 ,
|
||
|
|
.Xr sem_getvalue 3 ,
|
||
|
|
.Xr sem_init 3 ,
|
||
|
|
.Xr sem_open 3 ,
|
||
|
|
.Xr sem_post 3 ,
|
||
|
|
.Xr sem_wait 3 ,
|
||
|
|
.Xr config 8 ,
|
||
|
|
.Xr kldload 8 ,
|
||
|
|
.Xr kldunload 8
|
||
|
|
.Sh HISTORY
|
||
|
|
The
|
||
|
|
.Nm
|
||
|
|
facility appeared as a kernel option in
|
||
|
|
.Fx 3.0 .
|
||
|
|
The
|
||
|
|
.Nm
|
||
|
|
kernel module appeared in
|
||
|
|
.Fx 5.0 .
|