lib/libelf/elf_getarsym.c

   1 /*-
   2  * Copyright (c) 2006,2008 Joseph Koshy
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  */
  26
  27 #include <sys/cdefs.h>
  28
  29 #include <libelf.h>
  30
  31 #include "_libelf.h"
  32
  33 LIBELF_VCSID("$Id$");
  34
  35 Elf_Arsym *
  36 elf_getarsym(Elf *ar, size_t *ptr)
  37 {
  38         size_t n;
  39         Elf_Arsym *symtab;
  40
  41         n = 0;
  42         symtab = NULL;
  43
  44         if (ar == NULL || ar->e_kind != ELF_K_AR)
  45                 LIBELF_SET_ERROR(ARGUMENT, 0);
  46         else if ((symtab = ar->e_u.e_ar.e_symtab) != NULL)
  47                 n = ar->e_u.e_ar.e_symtabsz;
  48         else if (ar->e_u.e_ar.e_rawsymtab)
  49                 symtab = (ar->e_flags & LIBELF_F_AR_VARIANT_SVR4) ?
  50                     _libelf_ar_process_svr4_symtab(ar, &n) :
  51                     _libelf_ar_process_bsd_symtab(ar, &n);
  52         else
  53                 LIBELF_SET_ERROR(ARCHIVE, 0);
  54
  55         if (ptr)
  56                 *ptr = n;
  57         return (symtab);
  58 }