101 lines
3.2 KiB
C
101 lines
3.2 KiB
C
/*-
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* Copyright (c) 2006 Joseph Koshy
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <libelf.h>
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#include <string.h>
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#include "_libelf.h"
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/*
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* Retrieve a human readable translation for an error message.
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*/
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const char *_libelf_errors[] = {
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#define DEFINE_ERROR(N,S) [ELF_E_##N] = S
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DEFINE_ERROR(NONE, "No Error"),
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DEFINE_ERROR(ARCHIVE, "Malformed ar(1) archive"),
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DEFINE_ERROR(ARGUMENT, "Invalid argument"),
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DEFINE_ERROR(CLASS, "ELF class mismatch"),
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DEFINE_ERROR(DATA, "Invalid data buffer descriptor"),
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DEFINE_ERROR(HEADER, "Missing or malformed ELF header"),
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DEFINE_ERROR(IO, "I/O error"),
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DEFINE_ERROR(LAYOUT, "Layout constraint violation"),
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DEFINE_ERROR(MODE, "Incorrect ELF descriptor mode"),
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DEFINE_ERROR(RANGE, "Value out of range of target"),
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DEFINE_ERROR(RESOURCE, "Resource exhaustion"),
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DEFINE_ERROR(SECTION, "Invalid section descriptor"),
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DEFINE_ERROR(SEQUENCE, "API calls out of sequence"),
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DEFINE_ERROR(UNIMPL, "Unimplemented feature"),
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DEFINE_ERROR(VERSION, "Unknown ELF API version"),
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DEFINE_ERROR(NUM, "Unknown error")
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#undef DEFINE_ERROR
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};
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const char *
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elf_errmsg(int error)
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{
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int oserr;
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if (error == 0 && (error = LIBELF_PRIVATE(error)) == 0)
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return NULL;
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else if (error == -1)
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error = LIBELF_PRIVATE(error);
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oserr = error >> LIBELF_OS_ERROR_SHIFT;
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error &= LIBELF_ELF_ERROR_MASK;
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if (error < 0 || error >= ELF_E_NUM)
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return _libelf_errors[ELF_E_NUM];
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if (oserr) {
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strlcpy(LIBELF_PRIVATE(msg), _libelf_errors[error],
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sizeof(LIBELF_PRIVATE(msg)));
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strlcat(LIBELF_PRIVATE(msg), ": ", sizeof(LIBELF_PRIVATE(msg)));
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strlcat(LIBELF_PRIVATE(msg), strerror(oserr),
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sizeof(LIBELF_PRIVATE(msg)));
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return (const char *)&LIBELF_PRIVATE(msg);
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}
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return _libelf_errors[error];
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}
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#if defined(LIBELF_TEST_HOOKS)
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const char *
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_libelf_get_unknown_error_message(void)
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{
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return _libelf_errors[ELF_E_NUM];
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}
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const char *
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_libelf_get_no_error_message(void)
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{
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return _libelf_errors[0];
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}
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#endif /* LIBELF_TEST_HOOKS */
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