1*0a6a1f1dSLionel Sambuc /* $NetBSD: elf_errmsg.c,v 1.2 2014/03/09 16:58:04 christos Exp $ */
2*0a6a1f1dSLionel Sambuc
3*0a6a1f1dSLionel Sambuc /*-
4*0a6a1f1dSLionel Sambuc * Copyright (c) 2006,2008,2011 Joseph Koshy
5*0a6a1f1dSLionel Sambuc * All rights reserved.
6*0a6a1f1dSLionel Sambuc *
7*0a6a1f1dSLionel Sambuc * Redistribution and use in source and binary forms, with or without
8*0a6a1f1dSLionel Sambuc * modification, are permitted provided that the following conditions
9*0a6a1f1dSLionel Sambuc * are met:
10*0a6a1f1dSLionel Sambuc * 1. Redistributions of source code must retain the above copyright
11*0a6a1f1dSLionel Sambuc * notice, this list of conditions and the following disclaimer.
12*0a6a1f1dSLionel Sambuc * 2. Redistributions in binary form must reproduce the above copyright
13*0a6a1f1dSLionel Sambuc * notice, this list of conditions and the following disclaimer in the
14*0a6a1f1dSLionel Sambuc * documentation and/or other materials provided with the distribution.
15*0a6a1f1dSLionel Sambuc *
16*0a6a1f1dSLionel Sambuc * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17*0a6a1f1dSLionel Sambuc * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18*0a6a1f1dSLionel Sambuc * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19*0a6a1f1dSLionel Sambuc * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20*0a6a1f1dSLionel Sambuc * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21*0a6a1f1dSLionel Sambuc * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22*0a6a1f1dSLionel Sambuc * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23*0a6a1f1dSLionel Sambuc * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24*0a6a1f1dSLionel Sambuc * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25*0a6a1f1dSLionel Sambuc * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26*0a6a1f1dSLionel Sambuc * SUCH DAMAGE.
27*0a6a1f1dSLionel Sambuc */
28*0a6a1f1dSLionel Sambuc
29*0a6a1f1dSLionel Sambuc #include <sys/cdefs.h>
30*0a6a1f1dSLionel Sambuc
31*0a6a1f1dSLionel Sambuc #include <libelf.h>
32*0a6a1f1dSLionel Sambuc #include <stdio.h>
33*0a6a1f1dSLionel Sambuc #include <string.h>
34*0a6a1f1dSLionel Sambuc
35*0a6a1f1dSLionel Sambuc #include "_libelf.h"
36*0a6a1f1dSLionel Sambuc
37*0a6a1f1dSLionel Sambuc __RCSID("$NetBSD: elf_errmsg.c,v 1.2 2014/03/09 16:58:04 christos Exp $");
38*0a6a1f1dSLionel Sambuc ELFTC_VCSID("Id: elf_errmsg.c 2225 2011-11-26 18:55:54Z jkoshy ");
39*0a6a1f1dSLionel Sambuc
40*0a6a1f1dSLionel Sambuc /*
41*0a6a1f1dSLionel Sambuc * Retrieve a human readable translation for an error message.
42*0a6a1f1dSLionel Sambuc */
43*0a6a1f1dSLionel Sambuc
44*0a6a1f1dSLionel Sambuc static const char *_libelf_errors[] = {
45*0a6a1f1dSLionel Sambuc #define DEFINE_ERROR(N,S) [ELF_E_##N] = S
46*0a6a1f1dSLionel Sambuc DEFINE_ERROR(NONE, "No Error"),
47*0a6a1f1dSLionel Sambuc DEFINE_ERROR(ARCHIVE, "Malformed ar(1) archive"),
48*0a6a1f1dSLionel Sambuc DEFINE_ERROR(ARGUMENT, "Invalid argument"),
49*0a6a1f1dSLionel Sambuc DEFINE_ERROR(CLASS, "ELF class mismatch"),
50*0a6a1f1dSLionel Sambuc DEFINE_ERROR(DATA, "Invalid data buffer descriptor"),
51*0a6a1f1dSLionel Sambuc DEFINE_ERROR(HEADER, "Missing or malformed ELF header"),
52*0a6a1f1dSLionel Sambuc DEFINE_ERROR(IO, "I/O error"),
53*0a6a1f1dSLionel Sambuc DEFINE_ERROR(LAYOUT, "Layout constraint violation"),
54*0a6a1f1dSLionel Sambuc DEFINE_ERROR(MODE, "Incorrect ELF descriptor mode"),
55*0a6a1f1dSLionel Sambuc DEFINE_ERROR(RANGE, "Value out of range of target"),
56*0a6a1f1dSLionel Sambuc DEFINE_ERROR(RESOURCE, "Resource exhaustion"),
57*0a6a1f1dSLionel Sambuc DEFINE_ERROR(SECTION, "Invalid section descriptor"),
58*0a6a1f1dSLionel Sambuc DEFINE_ERROR(SEQUENCE, "API calls out of sequence"),
59*0a6a1f1dSLionel Sambuc DEFINE_ERROR(UNIMPL, "Unimplemented feature"),
60*0a6a1f1dSLionel Sambuc DEFINE_ERROR(VERSION, "Unknown ELF API version"),
61*0a6a1f1dSLionel Sambuc DEFINE_ERROR(NUM, "Unknown error")
62*0a6a1f1dSLionel Sambuc #undef DEFINE_ERROR
63*0a6a1f1dSLionel Sambuc };
64*0a6a1f1dSLionel Sambuc
65*0a6a1f1dSLionel Sambuc const char *
elf_errmsg(int error)66*0a6a1f1dSLionel Sambuc elf_errmsg(int error)
67*0a6a1f1dSLionel Sambuc {
68*0a6a1f1dSLionel Sambuc int oserr;
69*0a6a1f1dSLionel Sambuc
70*0a6a1f1dSLionel Sambuc if (error == ELF_E_NONE &&
71*0a6a1f1dSLionel Sambuc (error = LIBELF_PRIVATE(error)) == 0)
72*0a6a1f1dSLionel Sambuc return NULL;
73*0a6a1f1dSLionel Sambuc else if (error == -1)
74*0a6a1f1dSLionel Sambuc error = LIBELF_PRIVATE(error);
75*0a6a1f1dSLionel Sambuc
76*0a6a1f1dSLionel Sambuc oserr = error >> LIBELF_OS_ERROR_SHIFT;
77*0a6a1f1dSLionel Sambuc error &= LIBELF_ELF_ERROR_MASK;
78*0a6a1f1dSLionel Sambuc
79*0a6a1f1dSLionel Sambuc if (error < ELF_E_NONE || error >= ELF_E_NUM)
80*0a6a1f1dSLionel Sambuc return _libelf_errors[ELF_E_NUM];
81*0a6a1f1dSLionel Sambuc if (oserr) {
82*0a6a1f1dSLionel Sambuc (void) snprintf(LIBELF_PRIVATE(msg),
83*0a6a1f1dSLionel Sambuc sizeof(LIBELF_PRIVATE(msg)), "%s: %s",
84*0a6a1f1dSLionel Sambuc _libelf_errors[error], strerror(oserr));
85*0a6a1f1dSLionel Sambuc return (const char *)&LIBELF_PRIVATE(msg);
86*0a6a1f1dSLionel Sambuc }
87*0a6a1f1dSLionel Sambuc return _libelf_errors[error];
88*0a6a1f1dSLionel Sambuc }
89