libelf/common/nextscn.c

	nextscn.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*  Copyright (c) 1988 AT&T */
/*    All Rights Reserved   */


/*
 * Copyright (c) 1998 by Sun Microsystems, Inc.
 * All rights reserved.
 */


#pragma ident   "%Z%%M% %I% %E% SMI"    /* SVr4.0 1.2   */

#pragma weak    elf_nextscn = _elf_nextscn

#include "syn.h"
#include "libelf.h"
#include "decl.h"


Elf_Scn *
elf_nextscn(Elf * elf, Elf_Scn * scn)
{
    Elf_Scn *   ret_scn = 0;

    if (elf == 0)
        return (0);
    if (scn != 0) {
        READLOCKS(elf, scn)
        ret_scn = scn->s_next;
        READUNLOCKS(elf, scn)
    } else {
        ELFWLOCK(elf)
        if (elf->ed_hdscn == 0) {
            if (elf->ed_hdscn == 0)
                (void) _elf_cook(elf);
        }
        if ((scn = elf->ed_hdscn) != 0)
            ret_scn = scn->s_next;
        ELFUNLOCK(elf)
    }
    return (ret_scn);
}