b665ac0758
sysdecode_ioctlname() function. This function matches the behavior of the truss variant in that it returns a pointer to a string description for known ioctls. The caller is responsible for displaying unknown ioctl requests. For kdump this meant moving the logic to handle unknown ioctl requests out of the generated function and into an ioctlname() function in kdump.c instead. Differential Revision: https://reviews.freebsd.org/D4610
58 lines
2.1 KiB
Groff
58 lines
2.1 KiB
Groff
.\"
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.\" Copyright (c) 2015 John Baldwin <jhb@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 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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.\" $FreeBSD$
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.\"
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.Dd December 12, 2015
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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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.Ft conts 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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