.\" Copyright (c) 2004 Pawel Jakub Dawidek .\" 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 GGATEL 8 .Os .Sh NAME .Nm ggatel .Nd "GEOM Gate local control utility" .Sh SYNOPSIS .Nm .Cm create .Op Fl v .Op Fl o Cm ro | wo | rw .Op Fl s Ar sectorsize .Op Fl t Ar timeout .Op Fl u Ar unit .Ar path .Nm .Cm destroy .Op Fl f .Fl u Ar unit .Nm .Cm list .Op Fl v .Op Fl u Ar unit .Nm .Cm rescue .Op Fl v .Op Fl o Cm ro | wo | rw .Fl u Ar unit .Ar path .Sh DESCRIPTION The .Nm utility is a local GEOM Gate class consumer. It can be used as a replacement for .Xr md 4 devices or as a .Dq GEOMificator for non GEOM-aware devices, but it was mainly created as an example on how to use and how to communicate with the GEOM Gate kernel subsystem. .Pp Available commands: .Bl -tag -width ".Cm destroy" .It Cm create Create a .Nm ggate provider related to the given regular file or device. .It Cm destroy Destroy the given .Nm ggate provider. .It Cm list List .Nm ggate providers. .It Cm rescue Take over a previously created provider and handle pending and future requests. This is useful if the initial .Nm process died. To prevent data loss, the given path must lead to the regular file or device that was used to create the provider. .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 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 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. 0 means no timeout. Default is 30. .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 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 .Dq GEOMify the .Dq Li fd0 device and use .Xr gbde 8 to encrypt data on a floppy disk. .Bd -literal -offset indent ggatel create -u 5 /dev/fd0 gbde init /dev/ggate5 gbde attach ggate5 newfs /dev/ggate5.bde mount /dev/ggate5.bde /secret cp /private/foo /secret/ umount /secret gbde detach ggate5 ggatel destroy -u 5 .Ed .Sh SEE ALSO .Xr geom 4 , .Xr gbde 8 , .Xr ggatec 8 , .Xr ggated 8 , .Xr mount 8 , .Xr newfs 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 .