1 /* $NetBSD: elf_cntl.c,v 1.2 2014/03/09 16:58:04 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 <libelf.h> 30 31 #include "_libelf.h" 32 33 __RCSID("$NetBSD: elf_cntl.c,v 1.2 2014/03/09 16:58:04 christos Exp $"); 34 ELFTC_VCSID("Id: elf_cntl.c 2225 2011-11-26 18:55:54Z jkoshy "); 35 36 int 37 elf_cntl(Elf *e, Elf_Cmd c) 38 { 39 if (e == NULL || 40 (c != ELF_C_FDDONE && c != ELF_C_FDREAD)) { 41 LIBELF_SET_ERROR(ARGUMENT, 0); 42 return (-1); 43 } 44 45 if (e->e_parent) { 46 LIBELF_SET_ERROR(ARCHIVE, 0); 47 return (-1); 48 } 49 50 if (c == ELF_C_FDREAD) { 51 if (e->e_cmd == ELF_C_WRITE) { 52 LIBELF_SET_ERROR(MODE, 0); 53 return (-1); 54 } 55 else 56 return (0); 57 } 58 59 e->e_fd = -1; 60 return 0; 61 } 62