1*f8fb3368SJohn Marino /*-
2*f8fb3368SJohn Marino * Copyright (c) 2006,2008,2011 Joseph Koshy
3*f8fb3368SJohn Marino * All rights reserved.
4*f8fb3368SJohn Marino *
5*f8fb3368SJohn Marino * Redistribution and use in source and binary forms, with or without
6*f8fb3368SJohn Marino * modification, are permitted provided that the following conditions
7*f8fb3368SJohn Marino * are met:
8*f8fb3368SJohn Marino * 1. Redistributions of source code must retain the above copyright
9*f8fb3368SJohn Marino * notice, this list of conditions and the following disclaimer.
10*f8fb3368SJohn Marino * 2. Redistributions in binary form must reproduce the above copyright
11*f8fb3368SJohn Marino * notice, this list of conditions and the following disclaimer in the
12*f8fb3368SJohn Marino * documentation and/or other materials provided with the distribution.
13*f8fb3368SJohn Marino *
14*f8fb3368SJohn Marino * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15*f8fb3368SJohn Marino * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16*f8fb3368SJohn Marino * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17*f8fb3368SJohn Marino * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18*f8fb3368SJohn Marino * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19*f8fb3368SJohn Marino * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20*f8fb3368SJohn Marino * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21*f8fb3368SJohn Marino * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22*f8fb3368SJohn Marino * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23*f8fb3368SJohn Marino * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24*f8fb3368SJohn Marino * SUCH DAMAGE.
25*f8fb3368SJohn Marino */
26*f8fb3368SJohn Marino
27*f8fb3368SJohn Marino #include <libelf.h>
28*f8fb3368SJohn Marino #include <stdio.h>
29*f8fb3368SJohn Marino #include <string.h>
30*f8fb3368SJohn Marino
31*f8fb3368SJohn Marino #include "_libelf.h"
32*f8fb3368SJohn Marino
33*f8fb3368SJohn Marino ELFTC_VCSID("$Id: elf_errmsg.c 3174 2015-03-27 17:13:41Z emaste $");
34*f8fb3368SJohn Marino
35*f8fb3368SJohn Marino /*
36*f8fb3368SJohn Marino * Retrieve a human readable translation for an error message.
37*f8fb3368SJohn Marino */
38*f8fb3368SJohn Marino
39*f8fb3368SJohn Marino static const char *_libelf_errors[] = {
40*f8fb3368SJohn Marino #define DEFINE_ERROR(N,S) [ELF_E_##N] = S
41*f8fb3368SJohn Marino DEFINE_ERROR(NONE, "No Error"),
42*f8fb3368SJohn Marino DEFINE_ERROR(ARCHIVE, "Malformed ar(1) archive"),
43*f8fb3368SJohn Marino DEFINE_ERROR(ARGUMENT, "Invalid argument"),
44*f8fb3368SJohn Marino DEFINE_ERROR(CLASS, "ELF class mismatch"),
45*f8fb3368SJohn Marino DEFINE_ERROR(DATA, "Invalid data buffer descriptor"),
46*f8fb3368SJohn Marino DEFINE_ERROR(HEADER, "Missing or malformed ELF header"),
47*f8fb3368SJohn Marino DEFINE_ERROR(IO, "I/O error"),
48*f8fb3368SJohn Marino DEFINE_ERROR(LAYOUT, "Layout constraint violation"),
49*f8fb3368SJohn Marino DEFINE_ERROR(MODE, "Incorrect ELF descriptor mode"),
50*f8fb3368SJohn Marino DEFINE_ERROR(RANGE, "Value out of range of target"),
51*f8fb3368SJohn Marino DEFINE_ERROR(RESOURCE, "Resource exhaustion"),
52*f8fb3368SJohn Marino DEFINE_ERROR(SECTION, "Invalid section descriptor"),
53*f8fb3368SJohn Marino DEFINE_ERROR(SEQUENCE, "API calls out of sequence"),
54*f8fb3368SJohn Marino DEFINE_ERROR(UNIMPL, "Unimplemented feature"),
55*f8fb3368SJohn Marino DEFINE_ERROR(VERSION, "Unknown ELF API version"),
56*f8fb3368SJohn Marino DEFINE_ERROR(NUM, "Unknown error")
57*f8fb3368SJohn Marino #undef DEFINE_ERROR
58*f8fb3368SJohn Marino };
59*f8fb3368SJohn Marino
60*f8fb3368SJohn Marino const char *
elf_errmsg(int error)61*f8fb3368SJohn Marino elf_errmsg(int error)
62*f8fb3368SJohn Marino {
63*f8fb3368SJohn Marino int oserr;
64*f8fb3368SJohn Marino
65*f8fb3368SJohn Marino if (error == ELF_E_NONE &&
66*f8fb3368SJohn Marino (error = LIBELF_PRIVATE(error)) == 0)
67*f8fb3368SJohn Marino return NULL;
68*f8fb3368SJohn Marino else if (error == -1)
69*f8fb3368SJohn Marino error = LIBELF_PRIVATE(error);
70*f8fb3368SJohn Marino
71*f8fb3368SJohn Marino oserr = error >> LIBELF_OS_ERROR_SHIFT;
72*f8fb3368SJohn Marino error &= LIBELF_ELF_ERROR_MASK;
73*f8fb3368SJohn Marino
74*f8fb3368SJohn Marino if (error < ELF_E_NONE || error >= ELF_E_NUM)
75*f8fb3368SJohn Marino return _libelf_errors[ELF_E_NUM];
76*f8fb3368SJohn Marino if (oserr) {
77*f8fb3368SJohn Marino (void) snprintf((char *) LIBELF_PRIVATE(msg),
78*f8fb3368SJohn Marino sizeof(LIBELF_PRIVATE(msg)), "%s: %s",
79*f8fb3368SJohn Marino _libelf_errors[error], strerror(oserr));
80*f8fb3368SJohn Marino return (const char *)&LIBELF_PRIVATE(msg);
81*f8fb3368SJohn Marino }
82*f8fb3368SJohn Marino return _libelf_errors[error];
83*f8fb3368SJohn Marino }
84