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92 lines
2.7 KiB
C
92 lines
2.7 KiB
C
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/*-
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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 <ar.h>
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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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Elf *
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elf_memory(char *image, size_t sz)
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{
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Elf *e;
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if (LIBELF_PRIVATE(version) == EV_NONE) {
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LIBELF_SET_ERROR(SEQUENCE, 0);
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return (NULL);
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}
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if (image == NULL || sz == 0) {
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LIBELF_SET_ERROR(ARGUMENT, 0);
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return (NULL);
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}
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if ((e = _libelf_allocate_elf()) == NULL)
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return (NULL);
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e->e_cmd = ELF_C_READ;
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e->e_rawfile = image;
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e->e_rawsize = sz;
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#undef LIBELF_IS_ELF
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#define LIBELF_IS_ELF(P) ((P)[EI_MAG0] == ELFMAG0 && \
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(P)[EI_MAG1] == ELFMAG1 && (P)[EI_MAG2] == ELFMAG2 && \
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(P)[EI_MAG3] == ELFMAG3)
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if (sz > EI_NIDENT && LIBELF_IS_ELF(image)) {
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_libelf_init_elf(e, ELF_K_ELF);
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e->e_class = image[EI_CLASS];
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e->e_byteorder = image[EI_DATA];
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e->e_version = image[EI_VERSION];
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if (e->e_version > EV_CURRENT) {
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e = _libelf_release_elf(e);
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LIBELF_SET_ERROR(VERSION, 0);
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return (NULL);
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}
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if ((e->e_byteorder != ELFDATA2LSB && e->e_byteorder !=
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ELFDATA2MSB) || (e->e_class != ELFCLASS32 && e->e_class !=
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ELFCLASS64)) {
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e = _libelf_release_elf(e);
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LIBELF_SET_ERROR(HEADER, 0);
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return (NULL);
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}
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} else if (sz >= SARMAG &&
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strncmp(image, ARMAG, (size_t) SARMAG) == 0) {
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_libelf_init_elf(e, ELF_K_AR);
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e = _libelf_ar_open(e);
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} else
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_libelf_init_elf(e, ELF_K_NONE);
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return (e);
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}
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