161 lines
3.9 KiB
Groff
161 lines
3.9 KiB
Groff
.\" Copyright (c) 2004 Pawel Jakub Dawidek <pjd@FreeBSD.org>
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd April 26, 2004
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.Dt GGATEL 8
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.Os
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.Sh NAME
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.Nm ggatel
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.Nd "GEOM Gate local control utility"
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.Sh SYNOPSIS
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.Nm
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.Cm create
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.Op Fl v
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.Op Fl o Cm ro | wo | rw
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.Op Fl q Ar queue_size
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.Op Fl s Ar sectorsize
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.Op Fl t Ar timeout
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.Op Fl u Ar unit
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.Ar path
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.Nm
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.Cm attach
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.Op Fl v
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.Op Fl o Cm ro | wo | rw
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.Fl u Ar unit
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.Ar path
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.Nm
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.Cm destroy
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.Op Fl f
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.Fl u Ar unit
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.Nm
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.Cm list
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.Op Fl v
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.Op Fl u Ar unit
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.Sh DESCRIPTION
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The
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.Nm
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utility is a local GEOM Gate class consumer.
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It can be used as a replacement for
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.Xr md 4
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devices or as a
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.Dq GEOMificator
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for non GEOM-aware devices, but it was mainly created as an example
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on how to use and how to communicate with the GEOM Gate kernel module.
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.Pp
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Available commands:
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.Bl -tag -width ".Cm destroy"
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.It Cm create
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Create a
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.Nm ggate
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provider related to the given regular file or device.
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.It Cm attach
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Attach a worker process to an existing
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.Nm ggate
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provider.
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.It Cm destroy
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Destroy the given
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.Nm ggate
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provider.
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.It Cm list
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List
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.Nm ggate
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providers.
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.El
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.Pp
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Available options:
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.Bl -tag -width ".Fl s Cm ro | wo | rw"
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.It Fl f
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Forcibly destroy
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.Nm ggate
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provider (cancels all pending requests).
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.It Fl o Cm ro | wo | rw
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Specify permission to use when opening the file or device: read-only
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.Pq Cm ro ,
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write-only
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.Pq Cm wo ,
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or read-write
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.Pq Cm rw .
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Default is
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.Cm rw .
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.It Fl q Ar queue_size
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Number of pending I/O requests that can be queued before they will
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start to be canceled.
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Default is 1024.
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.It Fl s Ar sectorsize
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Sector size for
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.Nm ggate
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provider.
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If not specified, it is taken from device, or set to 512 bytes for files.
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.It Fl t Ar timeout
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Number of seconds to wait before an I/O request will be canceled.
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0 means no timeout.
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Default is 30.
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.It Fl u Ar unit
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Unit number to use.
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.It Fl v
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Do not fork, run in foreground and print debug informations on standard
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output.
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.It Ar path
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Path to a regular file or device.
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.El
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.Sh EXAMPLES
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.Dq GEOMify
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the
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.Dq Li fd0
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device and use
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.Xr gbde 8
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to encrypt data on a floppy.
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.Bd -literal -offset indent
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ggatel create -u 5 /dev/fd0
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gbde init /dev/ggate5
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gbde attach ggate5
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newfs /dev/ggate5.bde
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mount /dev/ggate5.bde /secret
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cp /private/foo /secret/
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umount /secret
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gbde detach ggate5
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ggatel destroy -u 5
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.Ed
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.Sh DIAGNOSTICS
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Exit status is 0 on success, or 1 if the command fails.
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To get details about the failure,
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.Nm
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should be called with the
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.Fl v
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option.
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.Sh SEE ALSO
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.Xr geom 4 ,
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.Xr gbde 8 ,
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.Xr ggatec 8 ,
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.Xr ggated 8 ,
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.Xr mount 8 ,
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.Xr newfs 8
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.Sh AUTHORS
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The
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.Nm
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utility as well as this manual page was written by
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.An Pawel Jakub Dawidek Aq pjd@FreeBSD.org .
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