Add a kernfs(5) man page to describe the kernel file system.

2 files changed, 115 insertions, 1 deletions

diff --git a/share/man/man5/Makefile b/share/man/man5/Makefile
index 589ae91..e2ba2ef 100644
--- a/share/man/man5/Makefile
+++ b/share/man/man5/Makefile
@@ -2,7 +2,7 @@
 
 #MISSING: dump.5 plot.5
 MAN5=	a.out.5 acct.5 core.5 dir.5 disktab.5 ethers.5 fs.5 fbtab.5 forward.5 \
-	fstab.5 group.5 hosts.5 link.5 networks.5 passwd.5 pbm.5 phones.5 \
+	fstab.5 group.5 hosts.5 link.5 kernfs.5 networks.5 passwd.5 pbm.5 phones.5 \
 	printcap.5 procfs.5 protocols.5 remote.5 resolver.5 services.5 \
 	shells.5 stab.5 sysconfig.5 types.5 utmp.5 hosts.equiv.5 hosts.lpd.5
 MLINKS=	fs.5 inode.5 utmp.5 wtmp.5 utmp.5 lastlog.5 dir.5 dirent.5 \
diff --git a/share/man/man5/kernfs.5 b/share/man/man5/kernfs.5
new file mode 100644
index 0000000..cff7ea1
--- /dev/null
+++ b/share/man/man5/kernfs.5
@@ -0,0 +1,114 @@
+.\" 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.
+.\"
+.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 mount point contains several 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 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 AUTHOR
+This manual page was written by Mike Pritchard <mpp@FreeBSD.org>,
+and was adapted from the
+.Xr mount_kernfs 8
+manual page.