1 /* $NetBSD: elf_getbase.c,v 1.4 2022/05/01 19:41:35 jkoshy Exp $ */ 2 3 /*- 4 * Copyright (c) 2006,2008 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 #include <libelf.h> 30 31 #include "_libelf.h" 32 33 __RCSID("$NetBSD: elf_getbase.c,v 1.4 2022/05/01 19:41:35 jkoshy Exp $"); 34 ELFTC_VCSID("Id: elf_getbase.c 3174 2015-03-27 17:13:41Z emaste"); 35 36 off_t 37 elf_getbase(Elf *e) 38 { 39 if (e == NULL) { 40 LIBELF_SET_ERROR(ARGUMENT, 0); 41 return ((off_t) -1); 42 } 43 44 if (e->e_parent == NULL) 45 return ((off_t) 0); 46 47 return ((off_t) ((uintptr_t) e->e_rawfile - 48 (uintptr_t) e->e_parent->e_rawfile)); 49 } 50