elf_cntl.c revision 164190
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: head/lib/libelf/elf_cntl.c 164190 2006-11-11 17:16:35Z jkoshy $"); 29 30#include <libelf.h> 31 32#include "_libelf.h" 33 34int 35elf_cntl(Elf *e, Elf_Cmd c) 36{ 37 if (e == NULL || 38 (c != ELF_C_FDDONE && c != ELF_C_FDREAD)) { 39 LIBELF_SET_ERROR(ARGUMENT, 0); 40 return (-1); 41 } 42 43 if (e->e_parent) { 44 LIBELF_SET_ERROR(ARCHIVE, 0); 45 return (-1); 46 } 47 48 if (c == ELF_C_FDREAD) { 49 if (e->e_cmd == ELF_C_WRITE) { 50 LIBELF_SET_ERROR(MODE, 0); 51 return (-1); 52 } 53 else 54 return (0); 55 } 56 57 e->e_fd = -1; 58 return 0; 59} 60