mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-20 11:11:24 +00:00
6ad10804f7
mount_fdesc -> mount_fdescfs mount_null -> mount_nullfs mount_portal -> mount_portalfs mount_umap -> mount_umapfs mount_union -> mount_unionfs
153 lines
4.9 KiB
Groff
153 lines
4.9 KiB
Groff
.\"
|
|
.\" Copyright (c) 1993, 1994
|
|
.\" The Regents of the University of California. All rights reserved.
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" This code is derived from software donated to Berkeley by
|
|
.\" Jan-Simon Pendry.
|
|
.\"
|
|
.\" 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 the University of
|
|
.\" California, Berkeley and its contributors.
|
|
.\" 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
|
|
.\"
|
|
.\" @(#)mount_portal.8 8.3 (Berkeley) 3/27/94
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd March 27, 1994
|
|
.Dt MOUNT_PORTALFS 8
|
|
.Os
|
|
.Sh NAME
|
|
.Nm mount_portalfs
|
|
.Nd mount the portal daemon
|
|
.Sh SYNOPSIS
|
|
.Nm
|
|
.Op Fl o Ar options
|
|
.Ar /etc/portal.conf
|
|
.Ar mount_point
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
command attaches an instance of the portal daemon
|
|
to the global filesystem namespace.
|
|
The conventional mount point is
|
|
.Pa /p .
|
|
.\" .PA /dev .
|
|
This command is normally executed by
|
|
.Xr mount 8
|
|
at boot time.
|
|
.Pp
|
|
The options are as follows:
|
|
.Bl -tag -width indent
|
|
.It Fl o
|
|
Options are specified with a
|
|
.Fl o
|
|
flag followed by a comma separated string of options.
|
|
See the
|
|
.Xr mount 8
|
|
man page for possible options and their meanings.
|
|
.El
|
|
.Pp
|
|
The portal daemon provides an
|
|
.Em open
|
|
service.
|
|
Objects opened under the portal mount point are
|
|
dynamically created by the portal daemon according
|
|
to rules specified in the named configuration file.
|
|
Using this mechanism allows descriptors such as sockets
|
|
to be made available in the filesystem namespace.
|
|
.Pp
|
|
The portal daemon works by being passed the full pathname
|
|
of the object being opened.
|
|
The daemon creates an appropriate descriptor according
|
|
to the rules in the configuration file, and then passes the descriptor back
|
|
to the calling process as the result of the open system call.
|
|
.Sh NAMESPACE
|
|
By convention, the portal daemon divides the namespace into sub-namespaces,
|
|
each of which handles objects of a particular type.
|
|
.Pp
|
|
The following sub-namespaces are currently implemented:
|
|
.Pa tcplisten ,
|
|
.Pa tcp
|
|
and
|
|
.Pa fs .
|
|
The
|
|
.Pa tcplisten
|
|
namespace takes a slash separated hostname and port and creates a TCP/IP
|
|
socket bound to the given hostname-port pair.
|
|
The hostname may be
|
|
specified as "ANY" to allow any other host to connect to the socket.
|
|
A
|
|
port number of 0 will dynamically allocate a port, this can be
|
|
discovered by calling
|
|
.Xr getsockname 2
|
|
with the returned file descriptor.
|
|
Privileged ports can only be bound to
|
|
by the super-user.
|
|
The
|
|
.Pa tcp
|
|
namespace takes a hostname and a port (slash separated) and
|
|
creates an open TCP/IP connection.
|
|
The
|
|
.Pa fs
|
|
namespace opens the named file, starting back at the root directory.
|
|
This can be used to provide a controlled escape path from
|
|
a chrooted environment.
|
|
.Sh "CONFIGURATION FILE"
|
|
The configuration file contains a list of rules.
|
|
Each rule takes one line and consists of two or more
|
|
whitespace separated fields.
|
|
A hash (``#'') character causes the remainder of a line to
|
|
be ignored. Blank lines are ignored.
|
|
.Pp
|
|
The first field is a pathname prefix to match
|
|
against the requested pathname.
|
|
If a match is found, the second field
|
|
tells the daemon what type of object to create.
|
|
Subsequent fields are passed to the creation function.
|
|
.Bd -literal
|
|
# @(#)portal.conf 5.1 (Berkeley) 7/13/92
|
|
tcplisten/ tcplisten tcplisten/
|
|
tcp/ tcp tcp/
|
|
fs/ file fs/
|
|
.Ed
|
|
.Sh FILES
|
|
.Bl -tag -width /p/* -compact
|
|
.It Pa /p/*
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr mount 2 ,
|
|
.Xr unmount 2 ,
|
|
.Xr fstab 5 ,
|
|
.Xr mount 8
|
|
.Sh CAVEATS
|
|
This filesystem may not be NFS-exported.
|
|
.Sh HISTORY
|
|
The
|
|
.Nm
|
|
utility first appeared in
|
|
.Bx 4.4 .
|