.\"	$NetBSD: elf_next.3,v 1.3 2016/02/20 02:43:42 christos Exp $
.\"
.\" Copyright (c) 2006,2008 Joseph Koshy.  All rights reserved.
.\"
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.\" modification, are permitted provided that the following conditions
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.\"    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
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.\" This software is provided by Joseph Koshy ``as is'' and
.\" any express or implied warranties, including, but not limited to, the
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.\" are disclaimed.  in no event shall Joseph Koshy be liable
.\" for any direct, indirect, incidental, special, exemplary, or consequential
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.\" Id: elf_next.3 189 2008-07-20 10:38:08Z jkoshy 
.\"
.Dd June 17, 2006
.Os
.Dt ELF_NEXT 3
.Sh NAME
.Nm elf_next
.Nd provide sequential access to the next archive member
.Sh LIBRARY
.Lb libelf
.Sh SYNOPSIS
.In libelf.h
.Ft Elf_Cmd
.Fn elf_next "Elf *elf"
.Sh DESCRIPTION
The
.Fn elf_next
function causes the ELF archive descriptor corresponding to argument
.Ar elf
to be adjusted to provide access to the next member in
the archive on a subsequent call to
.Fn elf_begin .
.Pp
The return value of
.Fn elf_next
is suitable for use in a loop invoking
.Fn elf_begin .
.Sh RETURN VALUES
If successful, function
.Fn elf_next
returns the value
.Dv ELF_C_READ .
Otherwise, if argument
.Ar elf
was not associated with an archive, or if it was
.Dv NULL ,
or if any other error occurred, the value
.Dv ELF_C_NULL
is returned.
.Sh EXAMPLES
To process all the members of an archive use:
.Bd -literal -offset indent
Elf_Cmd cmd;
Elf *archive, *e;
\&...
cmd = ELF_C_READ;
archive = elf_begin(fd, cmd, NULL);
while ((e = elf_begin(fd, cmd, archive)) != (Elf *) 0)
{
	... process `e' here ...

	cmd = elf_next(e);
	elf_end(e);
}
elf_end(archive);
.Ed
.Sh ERRORS
Function
.Fn elf_next
may fail with the following error:
.Bl -tag -width "[ELF_E_RESOURCE]"
.It Bq Er ELF_E_ARGUMENT
Argument
.Ar elf
was not associated with a containing
.Xr ar 1
archive.
.El
.Sh SEE ALSO
.Xr elf 3 ,
.Xr elf_begin 3 ,
.Xr elf_end 3 ,
.Xr elf_rand 3