mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-30 12:04:07 +00:00
167 lines
5.0 KiB
Groff
167 lines
5.0 KiB
Groff
.\"
|
|
.\" Copyright (c) 1994 SigmaSoft, Th. Lockert
|
|
.\" 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.
|
|
.\" 3. All advertising materials mentioning features or use of this software
|
|
.\" must display the following acknowledgement:
|
|
.\" This product includes software developed by SigmaSoft, Th. Lockert.
|
|
.\" 3. The name of the author may not be used to endorse or promote products
|
|
.\" derived from this software without specific prior written permission
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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 June 18, 1994
|
|
.Dt "IPCS" 1
|
|
.Os
|
|
.Sh NAME
|
|
.Nm ipcs
|
|
.Nd report System V interprocess communication facilities status
|
|
.Sh SYNOPSIS
|
|
.Nm
|
|
.Op Fl abcmopqstMQSTy
|
|
.Op Fl C Ar system
|
|
.Op Fl N Ar core
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
utility provides information on System V interprocess communication
|
|
(IPC) facilities on the system.
|
|
.Pp
|
|
The options are as follows:
|
|
.Bl -tag -width Ds
|
|
.It Fl a
|
|
Show the maximum amount of information possible when
|
|
displaying active semaphores, message queues,
|
|
and shared memory segments.
|
|
(This is shorthand for specifying the
|
|
.Fl b ,
|
|
.Fl c ,
|
|
.Fl o ,
|
|
.Fl p ,
|
|
and
|
|
.Fl t
|
|
options.)
|
|
.It Fl b
|
|
Show the maximum allowed sizes for active semaphores, message queues,
|
|
and shared memory segments. The
|
|
.Dq maximum allowed size
|
|
is the maximum number of bytes in a message on a message queue,
|
|
the size of a shared memory segment,
|
|
or the number of semaphores in a set of semaphores.
|
|
.It Fl c
|
|
Show the creator's name and group for active semaphores, message queues,
|
|
and shared memory segments.
|
|
.It Fl m
|
|
Display information about active shared memory segments.
|
|
.It Fl o
|
|
Show outstanding usage for active message queues,
|
|
and shared memory segments. The
|
|
.Dq outstanding usage
|
|
is the number of messages in a message queue, or the number
|
|
of processes attached to a shared memory segment.
|
|
.It Fl p
|
|
Show the process ID information for active semaphores, message queues,
|
|
and shared memory segments. The
|
|
.Dq process ID information
|
|
is the last process to send a message to or receive a message from
|
|
a message queue,
|
|
the process that created a semaphore, or the last process to attach
|
|
or detach a shared memory segment.
|
|
.It Fl q
|
|
Display information about active message queues.
|
|
.It Fl s
|
|
Display information about active semaphores.
|
|
.It Fl t
|
|
Show access times for active semaphores, message queues,
|
|
and shared memory segments. The access times is the time
|
|
of the last control operation on an IPC object,
|
|
the last send or receive of a message,
|
|
the last attach or detach of a shared memory segment,
|
|
or the last operation on a semaphore.
|
|
.It Fl C Ar system
|
|
Extract the name list from the specified system instead of the
|
|
default
|
|
.Dq Pa /boot/kernel/kernel .
|
|
Implies
|
|
.Fl y .
|
|
.It Fl M
|
|
Display system information about shared memory.
|
|
.It Fl N Ar core
|
|
Extract values associated with the name list from the specified
|
|
core instead of the default
|
|
.Dq Pa /dev/kmem .
|
|
Implies
|
|
.Fl y .
|
|
.It Fl Q
|
|
Display system information about messages queues.
|
|
.It Fl S
|
|
Display system information about semaphores.
|
|
.It Fl T
|
|
Display system information about shared memory, message queues
|
|
and semaphores.
|
|
.It Fl y
|
|
Use the
|
|
.Xr kvm 3
|
|
interface instead of the
|
|
.Xr sysctl 3
|
|
interface to extract the required information.
|
|
If
|
|
.Nm
|
|
is to operate on the running system,
|
|
using
|
|
.Xr kvm 3
|
|
will require read privileges to
|
|
.Pa /dev/kmem .
|
|
.El
|
|
.Pp
|
|
If none of the
|
|
.Fl M ,
|
|
.Fl m ,
|
|
.Fl Q ,
|
|
.Fl q ,
|
|
.Fl S ,
|
|
or
|
|
.Fl s
|
|
options are specified, information about all active IPC facilities is
|
|
listed.
|
|
.Sh RESTRICTIONS
|
|
System data structures may change while
|
|
.Nm
|
|
is running; the output of
|
|
.Nm
|
|
is not guaranteed to be consistent.
|
|
.Sh BUGS
|
|
This manual page is woefully incomplete, because it does not
|
|
at all attempt to explain the information printed by
|
|
.Nm .
|
|
.Sh FILES
|
|
.Bl -tag -width /boot/kernel/kernel -compact
|
|
.It Pa /dev/kmem
|
|
default kernel memory
|
|
.It Pa /boot/kernel/kernel
|
|
default system name list
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr ipcrm 1
|
|
.Sh AUTHORS
|
|
.An Thorsten Lockert Aq tholo@sigmasoft.com
|