1/*	$NetBSD: elf_getident.c,v 1.2 2010/02/22 10:48:32 darran Exp $	*/
2
3/*-
4 * Copyright (c) 2006 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#if HAVE_NBTOOL_CONFIG_H
30# include "nbtool_config.h"
31#endif
32
33#include <sys/cdefs.h>
34/* __FBSDID("$FreeBSD: src/lib/libelf/elf_getident.c,v 1.1.10.1.2.1 2009/10/25 01:10:29 kensmith Exp $"); */
35
36#include <ar.h>
37#include <assert.h>
38#include <libelf.h>
39
40#include "_libelf.h"
41
42char *
43elf_getident(Elf *e, size_t *sz)
44{
45
46	if (e == NULL) {
47		LIBELF_SET_ERROR(ARGUMENT, 0);
48		goto error;
49	}
50
51	if (e->e_cmd == ELF_C_WRITE && e->e_rawfile == NULL) {
52		LIBELF_SET_ERROR(SEQUENCE, 0);
53		goto error;
54	}
55
56	assert(e->e_kind != ELF_K_AR || e->e_cmd == ELF_C_READ);
57
58	if (sz) {
59		if (e->e_kind == ELF_K_AR)
60			*sz = SARMAG;
61		else if (e->e_kind == ELF_K_ELF)
62			*sz = EI_NIDENT;
63		else
64			*sz = e->e_rawsize;
65	}
66
67	return (e->e_rawfile);
68
69 error:
70	if (sz)
71		*sz = 0;
72	return (NULL);
73}
74