elf_shnum.c revision 256281
1/*- 2 * Copyright (c) 2006 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__FBSDID("$FreeBSD: stable/10/lib/libelf/elf_shnum.c 210345 2010-07-21 12:14:50Z kaiw $"); 29 30#include <ar.h> 31#include <libelf.h> 32 33#include "_libelf.h" 34 35static int 36_libelf_getshdrnum(Elf *e, size_t *shnum) 37{ 38 void *eh; 39 int ec; 40 41 if (e == NULL || e->e_kind != ELF_K_ELF || 42 ((ec = e->e_class) != ELFCLASS32 && ec != ELFCLASS64)) { 43 LIBELF_SET_ERROR(ARGUMENT, 0); 44 return (-1); 45 } 46 47 if ((eh = _libelf_ehdr(e, ec, 0)) == NULL) 48 return (-1); 49 50 *shnum = e->e_u.e_elf.e_nscn; 51 52 return (0); 53} 54 55int 56elf_getshdrnum(Elf *e, size_t *shnum) 57{ 58 return (_libelf_getshdrnum(e, shnum)); 59} 60 61/* Deprecated API. */ 62int 63elf_getshnum(Elf *e, size_t *shnum) 64{ 65 return (_libelf_getshdrnum(e, shnum) >= 0); 66} 67