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56 lines
2.1 KiB
Groff
56 lines
2.1 KiB
Groff
.\"
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.\" Copyright (c) 2015 John Baldwin <jhb@FreeBSD.org>
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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 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 AUTHOR 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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.Dd October 17, 2016
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.Dt sysdecode_ioctlname 3
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.Os
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.Sh NAME
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.Nm sysdecode_ioctlname
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.Nd lookup name of device control command
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.Sh LIBRARY
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.Lb libsysdecode
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.Sh SYNOPSIS
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.In sysdecode.h
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.Ft const char *
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.Fn sysdecode_ioctlname "unsigned long request"
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.Sh DESCRIPTION
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The
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.Fn sysdecode_ioctlname
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function returns the name of a device control request identified by
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.Fa request .
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A table of names is generated during the build of the
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.Nm sysdecode
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library from system headers that maps device control request values to
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the name of the corresponding C macro.
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.Sh RETURN VALUES
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The
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.Fn sysdecode_ioctlname
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function returns the name of a device control request if
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.Fa request
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is a known value;
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otherwise
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.Dv NULL .
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.Sh SEE ALSO
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.Xr sysdecode 3
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