.\" Copyright (c) 2004 Pawel Jakub Dawidek <pjd@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.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHORS 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 AUTHORS 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 September 8, 2016
.Dt GGATEC 8
.Os
.Sh NAME
.Nm ggatec
.Nd "GEOM Gate network client and control utility"
.Sh SYNOPSIS
.Nm
.Cm create
.Op Fl n
.Op Fl v
.Op Fl o Cm ro | wo | rw
.Op Fl p Ar port
.Op Fl q Ar queue_size
.Op Fl R Ar rcvbuf
.Op Fl S Ar sndbuf
.Op Fl s Ar sectorsize
.Op Fl t Ar timeout
.Op Fl u Ar unit
.Ar host
.Ar path
.Nm
.Cm rescue
.Op Fl n
.Op Fl v
.Op Fl o Cm ro | wo | rw
.Op Fl p Ar port
.Op Fl R Ar rcvbuf
.Op Fl S Ar sndbuf
.Fl u Ar unit
.Ar host
.Ar path
.Nm
.Cm destroy
.Op Fl f
.Fl u Ar unit
.Nm
.Cm list
.Op Fl v
.Op Fl u Ar unit
.Sh DESCRIPTION
The
.Nm
utility is a network client for the GEOM Gate class.
It is responsible for the creation of
.Nm ggate
devices and forwarding I/O requests between the
.Nm GEOM Gate
kernel subsystem and the
.Xr ggated 8
network daemon.
Available commands:
.Bl -tag -width ".Cm destroy"
.It Cm create
Connect to a
.Xr ggated 8
daemon on the specified host and create a
.Nm ggate
provider for the specified remote file or device.
.It Cm rescue
Create a new connection after the
.Nm
process has died or been killed.
The new connection to the
.Xr ggated 8
daemon handles pending and future requests.
.It Cm destroy
Destroy the given
.Nm ggate
provider.
.It Cm list
List
.Nm ggate
providers.
.El
.Pp
Available options:
.Bl -tag -width ".Fl s Cm ro | wo | rw"
.It Fl f
Forcibly destroy
.Nm ggate
provider (cancels all pending requests).
.It Fl n
Do not use
.Dv TCP_NODELAY
option on TCP sockets.
.It Fl o Cm ro | wo | rw
Specify permissions to use when opening the file or device: read-only
.Pq Cm ro ,
write-only
.Pq Cm wo ,
or read-write
.Pq Cm rw .
Default is
.Cm rw .
.It Fl p Ar port
Port to connect to on the remote host.
Default is 3080.
.It Fl q Ar queue_size
Number of pending I/O requests that can be queued before they will
start to be canceled.
Default is 1024.
.It Fl R Ar rcvbuf
Size of receive buffer to use.
When not specified, the system default is used.
.It Fl S Ar sndbuf
Size of send buffer to use.
When not specified, the system default is used.
.It Fl s Ar sectorsize
Sector size for
.Nm ggate
provider.
If not specified, it is taken from the device, or set to 512 bytes for files.
.It Fl t Ar timeout
Number of seconds to wait before an I/O request will be canceled.
Default is 0, which means no timeout.
.It Fl u Ar unit
Unit number to use.
.It Fl v
Do not fork, run in foreground and print debug information on standard
output.
.It Ar host
Remote host to connect to.
.It Ar path
Path to a regular file or device.
.El
.Sh EXIT STATUS
Exit status is 0 on success, or 1 if the command fails.
To get details about the failure,
.Nm
should be called with the
.Fl v
option.
.Sh EXAMPLES
Use a CD-ROM device on a remote host.
.Bd -literal -offset indent
server# cat /etc/gg.exports
client RO /dev/cd0
server# ggated

client# ggatec create -o ro server /dev/cd0
ggate0
client# mount_cd9660 /dev/ggate0 /cdrom
.Ed
.Sh SEE ALSO
.Xr geom 4 ,
.Xr ggated 8 ,
.Xr ggatel 8 ,
.Xr mount_cd9660 8
.Sh HISTORY
The
.Nm
utility appeared in
.Fx 5.3 .
.Sh AUTHORS
The
.Nm
utility as well as this manual page was written by
.An Pawel Jakub Dawidek Aq Mt pjd@FreeBSD.org .