external/bsd/elftoolchain/dist/libelf/elf_open.c

   1 /*      $NetBSD: elf_open.c,v 1.2 2014/03/09 16:58:04 christos Exp $    */
   2
   3 /*-
   4  * Copyright (c) 2011 Joseph Koshy
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  */
  28
  29 #include <libelf.h>
  30
  31 #include "_libelf.h"
  32
  33 __RCSID("$NetBSD: elf_open.c,v 1.2 2014/03/09 16:58:04 christos Exp $");
  34 ELFTC_VCSID("Id");
  35
  36 /*
  37  * Extension API: open a file for reading, ignoring parse errors.
  38  */
  39
  40 Elf *
  41 elf_open(int fd)
  42 {
  43         if (LIBELF_PRIVATE(version) == EV_NONE) {
  44                 LIBELF_SET_ERROR(SEQUENCE, 0);
  45                 return (NULL);
  46         }
  47
  48         return (_libelf_open_object(fd, ELF_C_READ, 0));
  49 }
  50
  51 /*
  52  * Extension API: create an ELF descriptor for an in-memory object,
  53  * ignoring parse errors.
  54  */
  55
  56 Elf *
  57 elf_openmemory(char *image, size_t sz)
  58 {
  59         if (LIBELF_PRIVATE(version) == EV_NONE) {
  60                 LIBELF_SET_ERROR(SEQUENCE, 0);
  61                 return (NULL);
  62         }
  63
  64         if (image == NULL || sz == 0) {
  65                 LIBELF_SET_ERROR(ARGUMENT, 0);
  66                 return (NULL);
  67         }
  68
  69         return (_libelf_memory(image, sz, 0));
  70 }