/* $NetBSD: elf_memory.c,v 1.1.1.2 2009/12/29 16:58:08 thorpej Exp $ */ /*- * Copyright (c) 2006 Joseph Koshy * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include /* __FBSDID("$FreeBSD: src/lib/libelf/elf_memory.c,v 1.1.10.1.2.1 2009/10/25 01:10:29 kensmith Exp $"); */ #include #include #include #include "_libelf.h" Elf * elf_memory(char *image, size_t sz) { Elf *e; if (LIBELF_PRIVATE(version) == EV_NONE) { LIBELF_SET_ERROR(SEQUENCE, 0); return (NULL); } if (image == NULL || sz == 0) { LIBELF_SET_ERROR(ARGUMENT, 0); return (NULL); } if ((e = _libelf_allocate_elf()) == NULL) return (NULL); e->e_cmd = ELF_C_READ; e->e_rawfile = image; e->e_rawsize = sz; #undef LIBELF_IS_ELF #define LIBELF_IS_ELF(P) ((P)[EI_MAG0] == ELFMAG0 && \ (P)[EI_MAG1] == ELFMAG1 && (P)[EI_MAG2] == ELFMAG2 && \ (P)[EI_MAG3] == ELFMAG3) if (sz > EI_NIDENT && LIBELF_IS_ELF(image)) { _libelf_init_elf(e, ELF_K_ELF); e->e_class = image[EI_CLASS]; e->e_byteorder = image[EI_DATA]; e->e_version = image[EI_VERSION]; if (e->e_version > EV_CURRENT) { e = _libelf_release_elf(e); LIBELF_SET_ERROR(VERSION, 0); return (NULL); } if ((e->e_byteorder != ELFDATA2LSB && e->e_byteorder != ELFDATA2MSB) || (e->e_class != ELFCLASS32 && e->e_class != ELFCLASS64)) { e = _libelf_release_elf(e); LIBELF_SET_ERROR(HEADER, 0); return (NULL); } } else if (sz >= SARMAG && strncmp(image, ARMAG, (size_t) SARMAG) == 0) { _libelf_init_elf(e, ELF_K_AR); e = _libelf_ar_open(e); } else _libelf_init_elf(e, ELF_K_NONE); return (e); }