mirror of
https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git
synced 2024-12-23 10:06:25 +01:00
130 lines
4.3 KiB
Groff
130 lines
4.3 KiB
Groff
.\" Copyright (c) 1996
|
|
.\" Mike Pritchard <mpp@FreeBSD.org>. 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 Mike Pritchard.
|
|
.\" 4. Neither the name of author nor the names of its contributors
|
|
.\" may be used to endorse or promote products derived from this software
|
|
.\" without specific prior written permission.
|
|
.\"
|
|
.\" 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.
|
|
.\"
|
|
.\" $Id: kernfs.5,v 1.5 1998/05/03 17:57:39 steve Exp $
|
|
.\"
|
|
.Dd December 14, 1996
|
|
.Dt kernfs 5
|
|
.Os BSD 4.4
|
|
.Sh NAME
|
|
.Nm kernfs
|
|
.Nd kernel file system
|
|
.Sh SYNOPSIS
|
|
.Bd -literal
|
|
kern /kern kernfs rw 0 0
|
|
.Ed
|
|
.Sh DESCRIPTION
|
|
The kernel file system, or
|
|
.Nm kernfs ,
|
|
provides access to information on the currently running kernel.
|
|
It is normally mounted on
|
|
.Pa /kern .
|
|
The file system includes several regular files which can be
|
|
read, and some of which can also be written.
|
|
The contents of the files are in a machine-independent format,
|
|
either a string or an integer in decimal ASCII. A trailing
|
|
newline character is added when a number is returned.
|
|
.Pp
|
|
The mount point contains the following files:
|
|
.Bl -tag -width copyright
|
|
.It Pa bootfile
|
|
The path from which the current kernel was booted.
|
|
.It Pa boottime
|
|
The time at which the system was last booted (decimal ASCII).
|
|
.It Pa copyright
|
|
The kernel copyright message.
|
|
.It Pa hostname
|
|
The current hostname, with a trailing newline. The
|
|
current hostname can be changed by writing to this file.
|
|
A trailing newline will be stripped from the hostname being
|
|
written.
|
|
.It Pa hz
|
|
The frequency of the system clock (decimal ASCII).
|
|
.It Pa loadavg
|
|
The 1, 5 and 15 minute load averages in kernel fixed-point
|
|
format. The final integer is the fix-point scaling factor.
|
|
All numbers are in decimal ASCII.
|
|
.It Pa pagesize
|
|
The machine pagesize (decimal ASCII).
|
|
.It Pa physmem
|
|
The number of pages of physical memory in the machine (decimal ASCII).
|
|
.It Pa root
|
|
The system root directory. In a chroot'ed environment,
|
|
.Xr mount_kernfs 8
|
|
can be used to create a new
|
|
.Pa /kern
|
|
mount point.
|
|
.Pa /kern/root
|
|
will then refer to the system global root, not the current
|
|
process root. Not currently enabled.
|
|
.It Pa rootdev
|
|
The root device. Not currently enabled.
|
|
.It Pa rrootdev
|
|
The raw root device. Not currently enabled.
|
|
.It Pa time
|
|
The second and microsecond values of the system clock (decimal ASCII).
|
|
.It Pa version
|
|
The kernel version string. The head line for
|
|
.Pa /etc/motd
|
|
can be generated by running
|
|
.Dq Ic "sed 1q /kern/version"
|
|
.El
|
|
.Pp
|
|
Most of the information provided by the
|
|
.Nm
|
|
is also available from
|
|
.Xr sysctl 8 .
|
|
.Sh FILES
|
|
.Bl -tag -width /kern/XXXXXXX
|
|
.It Pa /kern
|
|
normal mount point for the
|
|
.Nm kernfs .
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr sysctl 3 ,
|
|
.Xr mount_kernfs 8 ,
|
|
.Xr sysctl 8
|
|
.Sh HISTORY
|
|
The
|
|
.Nm
|
|
first appeared in
|
|
.Bx 4.4 .
|
|
The
|
|
.Nm
|
|
manual page first appeared in
|
|
.Fx 2.2 .
|
|
.Sh AUTHORS
|
|
This manual page was written by
|
|
.An Mike Pritchard Aq mpp@FreeBSD.org ,
|
|
and was adapted from the
|
|
.Xr mount_kernfs 8
|
|
manual page written by
|
|
.An Jan-Simon Pendry .
|