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.\" Copyright (c) 2010 Joseph Koshy. All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\"
.\" This software is provided by Joseph Koshy ``as is'' and
.\" any express or implied warranties, including, but not limited to, the
.\" implied warranties of merchantability and fitness for a particular purpose
.\" are disclaimed. in no event shall Joseph Koshy be liable
.\" for any direct, indirect, incidental, special, exemplary, or consequential
.\" damages (including, but not limited to, procurement of substitute goods
.\" or services; loss of use, data, or profits; or business interruption)
.\" however caused and on any theory of liability, whether in contract, strict
.\" liability, or tort (including negligence or otherwise) arising in any way
.\" out of the use of this software, even if advised of the possibility of
.\" such damage.
.\"
.\" $Id: dwarf_srcfiles.3 2075 2011-10-27 03:47:28Z jkoshy $
.\"
.Dd April 28, 2010
.Os
.Dt DWARF_SRCFILES 3
.Sh NAME
.Nm dwarf_srcfiles
.Nd retrieve source file information
.Sh LIBRARY
.Lb libdwarf
.Sh SYNOPSIS
.In libdwarf.h
.Ft int
.Fo dwarf_srcfiles
.Fa "Dwarf_Die die"
.Fa "char ***filenames"
.Fa "Dwarf_Signed *filenamecount"
.Fa "Dwarf_Error *err"
.Fc
.Sh DESCRIPTION
Function
.Fn dwarf_srcfiles
returns the source file names associated with a compilation unit.
Source file names are returned as an array of NUL-terminated strings.
.Pp
Argument
.Ar die
should reference a DWARF debugging information entry descriptor with
source file information, see
.Xr dwarf 3 .
Argument
.Ar filenames
should point to a location that will hold a pointer to the returned array
of file names.
Argument
.Ar filenamecount
should point to a location that will hold the number of file names returned.
If argument
.Ar err
is not NULL, it will be used to store error information in case of an
error.
.Ss Memory Management
The memory areas used for the file names and for array of pointers
being returned are managed by the DWARF(3) library.
The application should not attempt to directly free these memory areas.
Portable code should indicate that the memory areas are to be freed
by using
.Xr dwarf_dealloc 3 .
.Sh RETURN VALUES
Function
.Fn dwarf_srcfiles
returns
.Dv DW_DLV_OK
when it succeeds.
In case of an error, it returns
.Dv DW_DLV_ERROR
and sets the argument
.Ar err .
.Sh ERRORS
Function
.Fn dwarf_srcfiles
can fail with:
.Bl -tag -width ".Bq Er DW_DLE_ARGUMENT"
.It Bq Er DW_DLE_ARGUMENT
One of the arguments
.Ar die ,
.Ar filenames
or
.Ar filenamecount
was NULL.
.It Bq Er DW_DLE_NO_ENTRY
The compilation unit referenced by argument
.Ar die
does not have associated source file information.
.It Bq Er DW_DLE_MEMORY
An out of memory condition was encountered during the execution of
this function.
.El
.Sh SEE ALSO
.Xr dwarf 3 ,
.Xr dwarf_dealloc 3 ,
.Xr dwarf_srclines 3
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