ext/libelf/elf_getarsym.c

   1 /*-
   2  * Copyright (c) 2006 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
  28 #include "libelf.h"
  29
  30 #include "_libelf.h"
  31
  32 Elf_Arsym *
  33 elf_getarsym(Elf *ar, size_t *ptr)
  34 {
  35         size_t n;
  36         Elf_Arsym *symtab;
  37
  38         n = 0;
  39         symtab = NULL;
  40
  41         if (ar == NULL || ar->e_kind != ELF_K_AR)
  42                 LIBELF_SET_ERROR(ARGUMENT, 0);
  43         else if ((symtab = ar->e_u.e_ar.e_symtab) != NULL)
  44                 n = ar->e_u.e_ar.e_symtabsz;
  45         else if (ar->e_u.e_ar.e_rawsymtab)
  46                 symtab = _libelf_ar_process_symtab(ar, &n);
  47         else
  48                 LIBELF_SET_ERROR(ARCHIVE, 0);
  49
  50         if (ptr)
  51                 *ptr = n;
  52         return (symtab);
  53 }
  54