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\" Id: dwarf_seterrarg.3 3963 2022-03-12 16:07:32Z jkoshy
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Dd May 01, 2010
Dt DWARF_SETERRARG 3
Os
Sh NAME
Nm dwarf_seterrarg ,
Nm dwarf_seterrhand
Nd configure error handling
Sh LIBRARY
Lb libdwarf
Sh SYNOPSIS
In libdwarf.h
Ft Dwarf_Ptr
Fn dwarf_seterrarg "Dwarf_Debug dbg" "Dwarf_Ptr arg"
Ft Dwarf_Handler
Fn dwarf_seterrhand "Dwarf_Debug dbg" "Dwarf_Handler handler"
Sh DESCRIPTION
These functions may be used by applications to configure error handling
callbacks.
The error handling scheme used by the library is described in
Xr dwarf 3 .
Pp
Function
Fn dwarf_seterrarg
may be used to set the callback argument passed to a configured
error handler at the time it is invoked.
Argument
Fa arg
is the callback argument being set.
Argument
Fa dbg
can be a debug context allocated by a prior call to
Xr dwarf_init 3 ,
or can be
Dv NULL
to indicate that the library-wide callback argument
is to be set.
Pp
Function
Fn dwarf_seterrhand
may be used to associate an error handler denoted by argument
Fa handler
with the DWARF debug context descriptor denoted by argument
Fa dbg .
Argument
Fa dbg
should be a debug context allocated by a prior call to
Xr dwarf_init 3 ,
or may be
Dv NULL
to indicate that the library-wide error handler
is to be set.
Sh RETURN VALUES
Function
Fn dwarf_seterrhand
returns the previous error handler associated with argument
Fa dbg .
If argument
Fa dbg
is
Dv NULL ,
function
Fn dwarf_seterrhand
returns the previous library-wide error handler.
Pp
Function
Fn dwarf_seterrarg
returns the previous callback argument associated with argument
Fa dbg .
If argument
Fa dbg
is
Dv NULL ,
function
Fn dwarf_seterrarg
returns the previous library-wide callback argument.
Sh COMPATIBILITY
The behavior of these functions when argument
Fa dbg
is
Dv NULL
is a local extension.
Sh ERRORS
These functions do not set an error code.
Sh SEE ALSO
Xr dwarf 3 ,
Xr dwarf_init 3