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