1164190Sjkoshy/*- 2164190Sjkoshy * Copyright (c) 2006 Joseph Koshy 3164190Sjkoshy * All rights reserved. 4164190Sjkoshy * 5164190Sjkoshy * Redistribution and use in source and binary forms, with or without 6164190Sjkoshy * modification, are permitted provided that the following conditions 7164190Sjkoshy * are met: 8164190Sjkoshy * 1. Redistributions of source code must retain the above copyright 9164190Sjkoshy * notice, this list of conditions and the following disclaimer. 10164190Sjkoshy * 2. Redistributions in binary form must reproduce the above copyright 11164190Sjkoshy * notice, this list of conditions and the following disclaimer in the 12164190Sjkoshy * documentation and/or other materials provided with the distribution. 13164190Sjkoshy * 14164190Sjkoshy * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15164190Sjkoshy * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16164190Sjkoshy * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17164190Sjkoshy * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18164190Sjkoshy * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19164190Sjkoshy * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20164190Sjkoshy * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21164190Sjkoshy * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22164190Sjkoshy * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23164190Sjkoshy * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24164190Sjkoshy * SUCH DAMAGE. 25164190Sjkoshy */ 26164190Sjkoshy 27164190Sjkoshy#include <sys/cdefs.h> 28164190Sjkoshy__FBSDID("$FreeBSD$"); 29164190Sjkoshy 30164190Sjkoshy#include <libelf.h> 31164190Sjkoshy#include <string.h> 32164190Sjkoshy 33164190Sjkoshy#include "_libelf.h" 34164190Sjkoshy 35164190Sjkoshy/* 36164190Sjkoshy * Retrieve a human readable translation for an error message. 37164190Sjkoshy */ 38164190Sjkoshy 39241720Sedstatic const char *_libelf_errors[] = { 40164190Sjkoshy#define DEFINE_ERROR(N,S) [ELF_E_##N] = S 41164190Sjkoshy DEFINE_ERROR(NONE, "No Error"), 42164190Sjkoshy DEFINE_ERROR(ARCHIVE, "Malformed ar(1) archive"), 43164190Sjkoshy DEFINE_ERROR(ARGUMENT, "Invalid argument"), 44164190Sjkoshy DEFINE_ERROR(CLASS, "ELF class mismatch"), 45164190Sjkoshy DEFINE_ERROR(DATA, "Invalid data buffer descriptor"), 46164190Sjkoshy DEFINE_ERROR(HEADER, "Missing or malformed ELF header"), 47164190Sjkoshy DEFINE_ERROR(IO, "I/O error"), 48164190Sjkoshy DEFINE_ERROR(LAYOUT, "Layout constraint violation"), 49164190Sjkoshy DEFINE_ERROR(MODE, "Incorrect ELF descriptor mode"), 50164190Sjkoshy DEFINE_ERROR(RANGE, "Value out of range of target"), 51164190Sjkoshy DEFINE_ERROR(RESOURCE, "Resource exhaustion"), 52164190Sjkoshy DEFINE_ERROR(SECTION, "Invalid section descriptor"), 53164190Sjkoshy DEFINE_ERROR(SEQUENCE, "API calls out of sequence"), 54164190Sjkoshy DEFINE_ERROR(UNIMPL, "Unimplemented feature"), 55164190Sjkoshy DEFINE_ERROR(VERSION, "Unknown ELF API version"), 56164190Sjkoshy DEFINE_ERROR(NUM, "Unknown error") 57164190Sjkoshy#undef DEFINE_ERROR 58164190Sjkoshy}; 59164190Sjkoshy 60164190Sjkoshyconst char * 61164190Sjkoshyelf_errmsg(int error) 62164190Sjkoshy{ 63164190Sjkoshy int oserr; 64164190Sjkoshy 65164190Sjkoshy if (error == 0 && (error = LIBELF_PRIVATE(error)) == 0) 66164190Sjkoshy return NULL; 67164190Sjkoshy else if (error == -1) 68164190Sjkoshy error = LIBELF_PRIVATE(error); 69164190Sjkoshy 70164190Sjkoshy oserr = error >> LIBELF_OS_ERROR_SHIFT; 71164190Sjkoshy error &= LIBELF_ELF_ERROR_MASK; 72164190Sjkoshy 73164190Sjkoshy if (error < 0 || error >= ELF_E_NUM) 74164190Sjkoshy return _libelf_errors[ELF_E_NUM]; 75164190Sjkoshy if (oserr) { 76164190Sjkoshy strlcpy(LIBELF_PRIVATE(msg), _libelf_errors[error], 77164190Sjkoshy sizeof(LIBELF_PRIVATE(msg))); 78165032Sjkoshy strlcat(LIBELF_PRIVATE(msg), ": ", sizeof(LIBELF_PRIVATE(msg))); 79164190Sjkoshy strlcat(LIBELF_PRIVATE(msg), strerror(oserr), 80164190Sjkoshy sizeof(LIBELF_PRIVATE(msg))); 81164190Sjkoshy return (const char *)&LIBELF_PRIVATE(msg); 82164190Sjkoshy } 83164190Sjkoshy return _libelf_errors[error]; 84164190Sjkoshy} 85164190Sjkoshy 86164190Sjkoshy#if defined(LIBELF_TEST_HOOKS) 87164190Sjkoshy 88164190Sjkoshyconst char * 89164190Sjkoshy_libelf_get_unknown_error_message(void) 90164190Sjkoshy{ 91164190Sjkoshy return _libelf_errors[ELF_E_NUM]; 92164190Sjkoshy} 93164190Sjkoshy 94164190Sjkoshyconst char * 95164190Sjkoshy_libelf_get_no_error_message(void) 96164190Sjkoshy{ 97164190Sjkoshy return _libelf_errors[0]; 98164190Sjkoshy} 99164190Sjkoshy 100164190Sjkoshy#endif /* LIBELF_TEST_HOOKS */ 101