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104 lines
3.1 KiB
Groff
104 lines
3.1 KiB
Groff
.\"
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.\" Copyright (C) 1994 by Joerg Wunsch, Dresden
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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 AUTHOR(S) ``AS IS'' AND ANY
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.\" EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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.\" OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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.\" BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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.\" LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
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.\" USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
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.\" DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd May 22, 1994
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.Os
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.Dt FDCONTROL 8
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.Sh NAME
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.Nm fdcontrol
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.Nd modify floppy disk parameters
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.Sh SYNOPSIS
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.Nm fdcontrol
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.Op Fl d Ar 0|1
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.Ar device
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.Nm fdcontrol
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.Op Fl s
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.Ar device
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.Sh DESCRIPTION
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.Nm Fdcontrol
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allows the modification of the run-time behavior of the floppy
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disk device specified by
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.Ar device .
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.Ar Device
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should be a character device.
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.Pp
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.Nm Fdcontrol
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currently supports the specification of device parameters for the
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floppy disk drive
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.Po
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.Fl s ,
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also default mode
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.Pc ,
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or it allows the modification of the driver debug level, in case the
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floppy driver has been compiled into the kernel with the
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.Em DEBUG
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option set
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.Pq Fl d .
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.Pp
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Since the implications of such actions are considered harmful, the
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underlying
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.Xr ioctl 2
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command is restricted to the super-user.
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.Pp
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When requesting a new parameter specification, the command asks the
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user for each individual tunable parameter, defaulting to the
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currently used value.
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.Sh DIAGNOSTICS
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Error codes for the underlying
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.Xr ioctl 2
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commands are printed by the
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.Xr warn 3
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facility.
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.Sh BUGS
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The
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.Nm
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command is currently under development.
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It's user interface is rather
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silly and likely to change in future, options should be provided to
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allow anything being modified from the command line.
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.Pp
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The driver does actually support only two debug levels
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.Pq 0 and 1 ,
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where debug level 1 will generate huge amounts of output.
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It is likely
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to overflow the syslog if not used with extreme care.
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.Sh SEE ALSO
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.Xr ioctl 2 ,
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.Xr warn 3 ,
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.Xr fdc 4
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.Sh HISTORY
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.Nm Fdcontrol
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is currently under development.
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It's user interface and overall
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functionality are subjects to future improvements and changes.
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.Sh AUTHORS
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The program has been contributed by
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.if n Joerg Wunsch,
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.if t J\(:org Wunsch,
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Dresden.
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