1*2de3b87aSKai Wang /*- 2*2de3b87aSKai Wang * Copyright (c) 2006,2008,2011 Joseph Koshy 3*2de3b87aSKai Wang * All rights reserved. 4*2de3b87aSKai Wang * 5*2de3b87aSKai Wang * Redistribution and use in source and binary forms, with or without 6*2de3b87aSKai Wang * modification, are permitted provided that the following conditions 7*2de3b87aSKai Wang * are met: 8*2de3b87aSKai Wang * 1. Redistributions of source code must retain the above copyright 9*2de3b87aSKai Wang * notice, this list of conditions and the following disclaimer. 10*2de3b87aSKai Wang * 2. Redistributions in binary form must reproduce the above copyright 11*2de3b87aSKai Wang * notice, this list of conditions and the following disclaimer in the 12*2de3b87aSKai Wang * documentation and/or other materials provided with the distribution. 13*2de3b87aSKai Wang * 14*2de3b87aSKai Wang * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15*2de3b87aSKai Wang * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16*2de3b87aSKai Wang * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17*2de3b87aSKai Wang * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18*2de3b87aSKai Wang * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19*2de3b87aSKai Wang * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20*2de3b87aSKai Wang * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21*2de3b87aSKai Wang * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22*2de3b87aSKai Wang * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23*2de3b87aSKai Wang * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24*2de3b87aSKai Wang * SUCH DAMAGE. 25*2de3b87aSKai Wang */ 26*2de3b87aSKai Wang 27*2de3b87aSKai Wang #include <sys/cdefs.h> 28*2de3b87aSKai Wang 29*2de3b87aSKai Wang #include <libelf.h> 30*2de3b87aSKai Wang #include <stdio.h> 31*2de3b87aSKai Wang #include <string.h> 32*2de3b87aSKai Wang 33*2de3b87aSKai Wang #include "_libelf.h" 34*2de3b87aSKai Wang 35*2de3b87aSKai Wang ELFTC_VCSID("$Id: elf_errmsg.c 2225 2011-11-26 18:55:54Z jkoshy $"); 36*2de3b87aSKai Wang 37*2de3b87aSKai Wang /* 38*2de3b87aSKai Wang * Retrieve a human readable translation for an error message. 39*2de3b87aSKai Wang */ 40*2de3b87aSKai Wang 41*2de3b87aSKai Wang const char *_libelf_errors[] = { 42*2de3b87aSKai Wang #define DEFINE_ERROR(N,S) [ELF_E_##N] = S 43*2de3b87aSKai Wang DEFINE_ERROR(NONE, "No Error"), 44*2de3b87aSKai Wang DEFINE_ERROR(ARCHIVE, "Malformed ar(1) archive"), 45*2de3b87aSKai Wang DEFINE_ERROR(ARGUMENT, "Invalid argument"), 46*2de3b87aSKai Wang DEFINE_ERROR(CLASS, "ELF class mismatch"), 47*2de3b87aSKai Wang DEFINE_ERROR(DATA, "Invalid data buffer descriptor"), 48*2de3b87aSKai Wang DEFINE_ERROR(HEADER, "Missing or malformed ELF header"), 49*2de3b87aSKai Wang DEFINE_ERROR(IO, "I/O error"), 50*2de3b87aSKai Wang DEFINE_ERROR(LAYOUT, "Layout constraint violation"), 51*2de3b87aSKai Wang DEFINE_ERROR(MODE, "Incorrect ELF descriptor mode"), 52*2de3b87aSKai Wang DEFINE_ERROR(RANGE, "Value out of range of target"), 53*2de3b87aSKai Wang DEFINE_ERROR(RESOURCE, "Resource exhaustion"), 54*2de3b87aSKai Wang DEFINE_ERROR(SECTION, "Invalid section descriptor"), 55*2de3b87aSKai Wang DEFINE_ERROR(SEQUENCE, "API calls out of sequence"), 56*2de3b87aSKai Wang DEFINE_ERROR(UNIMPL, "Unimplemented feature"), 57*2de3b87aSKai Wang DEFINE_ERROR(VERSION, "Unknown ELF API version"), 58*2de3b87aSKai Wang DEFINE_ERROR(NUM, "Unknown error") 59*2de3b87aSKai Wang #undef DEFINE_ERROR 60*2de3b87aSKai Wang }; 61*2de3b87aSKai Wang 62*2de3b87aSKai Wang const char * 63*2de3b87aSKai Wang elf_errmsg(int error) 64*2de3b87aSKai Wang { 65*2de3b87aSKai Wang int oserr; 66*2de3b87aSKai Wang 67*2de3b87aSKai Wang if (error == ELF_E_NONE && 68*2de3b87aSKai Wang (error = LIBELF_PRIVATE(error)) == 0) 69*2de3b87aSKai Wang return NULL; 70*2de3b87aSKai Wang else if (error == -1) 71*2de3b87aSKai Wang error = LIBELF_PRIVATE(error); 72*2de3b87aSKai Wang 73*2de3b87aSKai Wang oserr = error >> LIBELF_OS_ERROR_SHIFT; 74*2de3b87aSKai Wang error &= LIBELF_ELF_ERROR_MASK; 75*2de3b87aSKai Wang 76*2de3b87aSKai Wang if (error < ELF_E_NONE || error >= ELF_E_NUM) 77*2de3b87aSKai Wang return _libelf_errors[ELF_E_NUM]; 78*2de3b87aSKai Wang if (oserr) { 79*2de3b87aSKai Wang (void) snprintf(LIBELF_PRIVATE(msg), 80*2de3b87aSKai Wang sizeof(LIBELF_PRIVATE(msg)), "%s: %s", 81*2de3b87aSKai Wang _libelf_errors[error], strerror(oserr)); 82*2de3b87aSKai Wang return (const char *)&LIBELF_PRIVATE(msg); 83*2de3b87aSKai Wang } 84*2de3b87aSKai Wang return _libelf_errors[error]; 85*2de3b87aSKai Wang } 86