90 lines
3.1 KiB
Groff
90 lines
3.1 KiB
Groff
.\"
|
|
.\" Copyright (c) 1995
|
|
.\" Mark Murray. 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 Mark Murray
|
|
.\" and Theodore Ts'o
|
|
.\" 4. Neither the name of the author nor the names of any co-contributors
|
|
.\" may be used to endorse or promote products derived from this software
|
|
.\" without specific prior written permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY MARK MURRAY 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 MARK MURRAY 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.
|
|
.\"
|
|
.\" $Id: rndcontrol.8,v 1.2 1995/12/27 11:40:45 markm Exp $
|
|
.\"
|
|
.Dd October 20, 1995
|
|
.Dt RNDCONTROL 8
|
|
.Os FreeBSD 2
|
|
.Sh NAME
|
|
.Nm \&rndcontrol
|
|
.Nd a utility for manipulating the /dev/random device.
|
|
.Sh SYNOPSIS
|
|
.Nm \&rndcontrol
|
|
.Op Fl q
|
|
.Op Fl s Ar irq_no
|
|
.Op Fl c Ar irq_no
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm rndcontrol
|
|
command is used to set which interrupts are used to help randomise
|
|
the ``pool of entropy'' maintained by the kernel. The
|
|
.Em /dev/random
|
|
and
|
|
.Em /dev/urandom
|
|
devices are the user interface to this source of randomness.
|
|
Any changes take effect immediately.
|
|
.Sh OPTIONS
|
|
.TP
|
|
The following command line options are supported:
|
|
.Bl -tag -width indent
|
|
.It Fl q
|
|
Turns off all output except errors.
|
|
.It Fl s Ar n
|
|
Allows IRQ
|
|
.Em n
|
|
to be used as a source of randomness. This option may be repeated for
|
|
more than one IRQ.
|
|
.It Fl c Ar n
|
|
Stops IRQ
|
|
.Em n
|
|
from being used as a source of randomness. This option may be repeated for
|
|
more than one IRQ.
|
|
.Pp
|
|
The default is to have no IRQ's being used.
|
|
.Pp
|
|
.Sh FILES
|
|
.Bl -tag -width indent -compact
|
|
.It Pa /dev/random - Secure random device
|
|
.It Pa /dev/urandom - Random device
|
|
.El
|
|
.Sh BUGS
|
|
Sure to be some.
|
|
.Sh "SEE ALSO"
|
|
.Xr random 4
|
|
.Sh AUTHOR
|
|
Theodore Ts'o wrote the core code. Mark Murray ported this code to
|
|
FreeBSD and wrote the support routines and constructed the man pages.
|
|
.Sh HISTORY
|
|
.Nm rndcontrol
|
|
first appeared in FreeBSD 2.1.5
|