1  /*-
 2   * Copyright (c) 2011 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 <libelf.h>
28  
29  #include "_libelf.h"
30  
31  ELFTC_VCSID("$Id$");
32  
33  /*
34   * Extension API: open a file for reading, ignoring parse errors.
35   */
36  
37  Elf *
38  elf_open(int fd)
39  {
40  	if (LIBELF_PRIVATE(version) == EV_NONE) {
41  		LIBELF_SET_ERROR(SEQUENCE, 0);
42  		return (NULL);
43  	}
44  
45  	return (_libelf_open_object(fd, ELF_C_READ, 0));
46  }
47  
48  /*
49   * Extension API: create an ELF descriptor for an in-memory object,
50   * ignoring parse errors.
51   */
52  
53  Elf *
54  elf_openmemory(char *image, size_t sz)
55  {
56  	if (LIBELF_PRIVATE(version) == EV_NONE) {
57  		LIBELF_SET_ERROR(SEQUENCE, 0);
58  		return (NULL);
59  	}
60  
61  	if (image == NULL || sz == 0) {
62  		LIBELF_SET_ERROR(ARGUMENT, 0);
63  		return (NULL);
64  	}
65  
66  	return (_libelf_memory((unsigned char *) image, sz, 0));
67  }