1.\" Copyright (c) 2010 Joseph Koshy. All rights reserved. 2.\" 3.\" Redistribution and use in source and binary forms, with or without 4.\" modification, are permitted provided that the following conditions 5.\" are met: 6.\" 1. Redistributions of source code must retain the above copyright 7.\" notice, this list of conditions and the following disclaimer. 8.\" 2. Redistributions in binary form must reproduce the above copyright 9.\" notice, this list of conditions and the following disclaimer in the 10.\" documentation and/or other materials provided with the distribution. 11.\" 12.\" This software is provided by Joseph Koshy ``as is'' and 13.\" any express or implied warranties, including, but not limited to, the 14.\" implied warranties of merchantability and fitness for a particular purpose 15.\" are disclaimed. in no event shall Joseph Koshy be liable 16.\" for any direct, indirect, incidental, special, exemplary, or consequential 17.\" damages (including, but not limited to, procurement of substitute goods 18.\" or services; loss of use, data, or profits; or business interruption) 19.\" however caused and on any theory of liability, whether in contract, strict 20.\" liability, or tort (including negligence or otherwise) arising in any way 21.\" out of the use of this software, even if advised of the possibility of 22.\" such damage. 23.\" 24.\" $Id: dwarf_seterrarg.3 2075 2011-10-27 03:47:28Z jkoshy $ 25.\" 26.Dd May 01, 2010 27.Os 28.Dt DWARF_SETERRARG 3 29.Sh NAME 30.Nm dwarf_seterrarg , 31.Nm dwarf_seterrhand 32.Nd configure error handling 33.Sh LIBRARY 34.Lb libdwarf 35.Sh SYNOPSIS 36.In libdwarf.h 37.Ft Dwarf_Ptr 38.Fn dwarf_seterrarg "Dwarf_Debug dbg" "Dwarf_Ptr arg" 39.Ft Dwarf_Handler 40.Fn dwarf_seterrhand "Dwarf_Debug dbg" "Dwarf_Handler handler" 41.Sh DESCRIPTION 42These functions may be used by applications to configure error handling 43callbacks. 44The error handling scheme used by the library is described in 45.Xr dwarf 3 . 46.Pp 47Function 48.Fn dwarf_seterrarg 49may be used to set the callback argument passed to a configured 50error handler at the time it is invoked. 51Argument 52.Ar arg 53is the callback argument being set. 54Argument 55.Ar dbg 56can be a debug context allocated by a prior call to 57.Xr dwarf_init 3 , 58or can be NULL to indicate that the library-wide callback argument 59is to be set. 60.Pp 61Function 62.Fn dwarf_seterrhand 63may be used to associate an error handler denoted by argument 64.Ar handler 65with the DWARF debug context descriptor denoted by argument 66.Ar dbg . 67Argument 68.Ar dbg 69should be a debug context allocated by a prior call to 70.Xr dwarf_init 3 , 71or may be NULL to indicate that the library-wide error handler 72is to be set. 73.Sh RETURN VALUES 74Function 75.Fn dwarf_seterrhand 76returns the previous error handler associated with argument 77.Ar dbg . 78If argument 79.Ar dbg 80is NULL, function 81.Fn dwarf_seterrhand 82returns the previous library-wide error handler. 83.Pp 84Function 85.Fn dwarf_seterrarg 86returns the previous callback argument associated with argument 87.Ar dbg . 88If argument 89.Ar dbg 90is NULL, function 91.Fn dwarf_seterrarg 92returns the previous library-wide callback argument. 93.Pp 94.Sh COMPATIBILITY 95The behavior of these functions when argument 96.Ar dbg 97is NULL is a local extension. 98.Sh ERRORS 99These functions do not set an error code. 100.Sh SEE ALSO 101.Xr dwarf 3 , 102.Xr dwarf_init 3 103