Add a basic manpage for smbfs(5).

Submitted by:	Gordon Bergling
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D23905

share/man/man5/Makefile

@@ -63,6 +63,7 @@ MAN=	acct.5 \
 	resolver.5 \
 	services.5 \
 	shells.5 \
+	smbfs.5 \
 	src.conf.5 \
 	stab.5 \
 	style.Makefile.5 \

share/man/man5/smbfs.5

@@ -0,0 +1,79 @@
+.\" Copyright (c) 2020 Gordon Bergling
+.\"
+.\" 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 April 8, 2020
+.Dt SMBFS 5
+.Os
+.Sh NAME
+.Nm smbfs
+.Nd "SMB FS"
+.Sh SYNOPSIS
+To compile this driver into the kernel,
+place the following lines in your
+kernel configuration file:
+.Bd -ragged -offset indent
+.Cd "option NETSMB"
+.Ed
+.Pp
+Alternatively, to load the driver as a
+module at boot time, place the following line in
+.Xr loader.conf 5 :
+.Bd -literal -offset indent
+smbfs_load="YES"
+.Ed
+.Sh DESCRIPTION
+The SMB driver is an implementation of the CIFS (Common Internet Filesystem)
+network protocol.
+.Sh SEE ALSO
+.Xr smbutil 1 ,
+.Xr mount_smbfs 8
+.Sh STANDARDS
+.Rs
+.%U https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-cifs/
+.%T Common Internet File System (CIFS) Protocol
+.%R MS-CIFS
+.%D December 2018
+.Re
+.Pp
+.Rs
+.%U https://tools.ietf.org/html/draft-heizer-cifs-v1-spec-00
+.%T Common Internet File System Protocol (CIFS/1.0)
+.%D June 13, 1996
+.%A I. Heizer
+.%A P. Leach
+.%A D. Perry
+.Re
+.Sh HISTORY
+The
+.Nm
+device driver first appeared in
+.Fx 4.4 .
+.Sh AUTHORS
+The
+.Nm
+device driver was written by
+.An Boris Popov Aq Mt bp@FreeBSD.org .
+The manual page was contributed by
+.An Gordon Bergling Aq Mt gbergling@gmail.com .