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 <ar.h>
30  #include <libelf.h>
31  
32  #include "_libelf.h"
33  
34  ELFTC_VCSID("$Id$");
35  
36  static int
37  _libelf_getphdrnum(Elf *e, size_t *phnum)
38  {
39  	void *eh;
40  	int ec;
41  
42  	if (e == NULL || e->e_kind != ELF_K_ELF ||
43  	    ((ec = e->e_class) != ELFCLASS32 && ec != ELFCLASS64)) {
44  		LIBELF_SET_ERROR(ARGUMENT, 0);
45  		return (-1);
46  	}
47  
48  	if ((eh = _libelf_ehdr(e, ec, 0)) == NULL)
49  		return (-1);
50  
51  	*phnum = e->e_u.e_elf.e_nphdr;
52  
53  	return (0);
54  }
55  
56  int
57  elf_getphdrnum(Elf *e, size_t *phnum)
58  {
59  	return (_libelf_getphdrnum(e, phnum));
60  }
61  
62  /* Deprecated API */
63  int
64  elf_getphnum(Elf *e, size_t *phnum)
65  {
66  	return (_libelf_getphdrnum(e, phnum) >= 0);
67  }