1 /*- 2 * Copyright (c) 2006,2008 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 <libelf.h> 28 29 #include "_libelf.h" 30 31 ELFTC_VCSID("$Id: elf_cntl.c 2225 2011-11-26 18:55:54Z jkoshy $"); 32 33 int 34 elf_cntl(Elf *e, Elf_Cmd c) 35 { 36 if (e == NULL || 37 (c != ELF_C_FDDONE && c != ELF_C_FDREAD)) { 38 LIBELF_SET_ERROR(ARGUMENT, 0); 39 return (-1); 40 } 41 42 if (e->e_parent) { 43 LIBELF_SET_ERROR(ARCHIVE, 0); 44 return (-1); 45 } 46 47 if (c == ELF_C_FDREAD) { 48 if (e->e_cmd == ELF_C_WRITE) { 49 LIBELF_SET_ERROR(MODE, 0); 50 return (-1); 51 } 52 else 53 return (0); 54 } 55 56 e->e_fd = -1; 57 return 0; 58 } 59