1 /* $NetBSD: elf_shstrndx.c,v 1.3 2016/02/20 02:43:42 christos 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 <ar.h> 30 #include <libelf.h> 31 32 #include "_libelf.h" 33 34 __RCSID("$NetBSD: elf_shstrndx.c,v 1.3 2016/02/20 02:43:42 christos Exp $"); 35 ELFTC_VCSID("Id: elf_shstrndx.c 3174 2015-03-27 17:13:41Z emaste "); 36 37 static int 38 _libelf_getshdrstrndx(Elf *e, size_t *strndx) 39 { 40 void *eh; 41 int ec; 42 43 if (e == NULL || e->e_kind != ELF_K_ELF || 44 ((ec = e->e_class) != ELFCLASS32 && ec != ELFCLASS64)) { 45 LIBELF_SET_ERROR(ARGUMENT, 0); 46 return (-1); 47 } 48 49 if ((eh = _libelf_ehdr(e, ec, 0)) == NULL) 50 return (-1); 51 52 *strndx = e->e_u.e_elf.e_strndx; 53 54 return (0); 55 } 56 57 int 58 elf_getshdrstrndx(Elf *e, size_t *strndx) 59 { 60 return (_libelf_getshdrstrndx(e, strndx)); 61 } 62 63 int 64 elf_getshstrndx(Elf *e, size_t *strndx) /* Deprecated API. */ 65 { 66 return (_libelf_getshdrstrndx(e, strndx) >= 0); 67 } 68 69 int 70 elf_setshstrndx(Elf *e, size_t strndx) 71 { 72 void *eh; 73 int ec; 74 75 if (e == NULL || e->e_kind != ELF_K_ELF || 76 ((ec = e->e_class) != ELFCLASS32 && ec != ELFCLASS64) || 77 ((eh = _libelf_ehdr(e, ec, 0)) == NULL)) { 78 LIBELF_SET_ERROR(ARGUMENT, 0); 79 return (0); 80 } 81 82 return (_libelf_setshstrndx(e, eh, ec, strndx)); 83 } 84