1 /* $NetBSD: elf_errmsg.c,v 1.2 2014/03/09 16:58:04 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 2006,2008,2011 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 <sys/cdefs.h> 30 31 #include <libelf.h> 32 #include <stdio.h> 33 #include <string.h> 34 35 #include "_libelf.h" 36 37 __RCSID("$NetBSD: elf_errmsg.c,v 1.2 2014/03/09 16:58:04 christos Exp $"); 38 ELFTC_VCSID("Id: elf_errmsg.c 2225 2011-11-26 18:55:54Z jkoshy "); 39 40 /* 41 * Retrieve a human readable translation for an error message. 42 */ 43 44 static const char *_libelf_errors[] = { 45 #define DEFINE_ERROR(N,S) [ELF_E_##N] = S 46 DEFINE_ERROR(NONE, "No Error"), 47 DEFINE_ERROR(ARCHIVE, "Malformed ar(1) archive"), 48 DEFINE_ERROR(ARGUMENT, "Invalid argument"), 49 DEFINE_ERROR(CLASS, "ELF class mismatch"), 50 DEFINE_ERROR(DATA, "Invalid data buffer descriptor"), 51 DEFINE_ERROR(HEADER, "Missing or malformed ELF header"), 52 DEFINE_ERROR(IO, "I/O error"), 53 DEFINE_ERROR(LAYOUT, "Layout constraint violation"), 54 DEFINE_ERROR(MODE, "Incorrect ELF descriptor mode"), 55 DEFINE_ERROR(RANGE, "Value out of range of target"), 56 DEFINE_ERROR(RESOURCE, "Resource exhaustion"), 57 DEFINE_ERROR(SECTION, "Invalid section descriptor"), 58 DEFINE_ERROR(SEQUENCE, "API calls out of sequence"), 59 DEFINE_ERROR(UNIMPL, "Unimplemented feature"), 60 DEFINE_ERROR(VERSION, "Unknown ELF API version"), 61 DEFINE_ERROR(NUM, "Unknown error") 62 #undef DEFINE_ERROR 63 }; 64 65 const char * 66 elf_errmsg(int error) 67 { 68 int oserr; 69 70 if (error == ELF_E_NONE && 71 (error = LIBELF_PRIVATE(error)) == 0) 72 return NULL; 73 else if (error == -1) 74 error = LIBELF_PRIVATE(error); 75 76 oserr = error >> LIBELF_OS_ERROR_SHIFT; 77 error &= LIBELF_ELF_ERROR_MASK; 78 79 if (error < ELF_E_NONE || error >= ELF_E_NUM) 80 return _libelf_errors[ELF_E_NUM]; 81 if (oserr) { 82 (void) snprintf(LIBELF_PRIVATE(msg), 83 sizeof(LIBELF_PRIVATE(msg)), "%s: %s", 84 _libelf_errors[error], strerror(oserr)); 85 return (const char *)&LIBELF_PRIVATE(msg); 86 } 87 return _libelf_errors[error]; 88 } 89