usr/src/cmd/sgs/libelf/common/getarhdr.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 /*      Copyright (c) 1988 AT&T */
  28 /*        All Rights Reserved   */
  29
  30 #pragma ident   "%Z%%M% %I%     %E% SMI"
  31
  32 #include <ar.h>
  33 #include "libelf.h"
  34 #include "decl.h"
  35 #include "member.h"
  36 #include "msg.h"
  37
  38
  39 Elf_Arhdr *
  40 elf_getarhdr(Elf * elf)
  41 {
  42         Member *        mh;
  43         Elf_Arhdr *     rc;
  44
  45         if (elf == 0)
  46                 return (0);
  47         ELFRLOCK(elf)
  48         if ((mh = elf->ed_armem) == 0) {
  49                 ELFUNLOCK(elf)
  50                 _elf_seterr(EREQ_AR, 0);
  51                 return (0);
  52         }
  53         if (mh->m_err != 0) {
  54                 ELFUNLOCK(elf);
  55                 /*LINTED*/
  56                 _elf_seterr((Msg)mh->m_err, 0);
  57                 return (0);
  58         }
  59         rc = &elf->ed_armem->m_hdr;
  60         ELFUNLOCK(elf)
  61         return (rc);
  62 }