xref: /freebsd/contrib/elftoolchain/libelf/elf_getarsym.c (revision bc96366c864c07ef352edb92017357917c75b36c)
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 ELFTC_VCSID("$Id: elf_getarsym.c 2225 2011-11-26 18:55:54Z jkoshy $");
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 }
59