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/*-
* Copyright (c) 2006,2008 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 <sys/cdefs.h>
#include <ar.h>
#include <libelf.h>
#include <string.h>
#include "_libelf.h"
LIBELF_VCSID("$Id: elf_memory.c 189 2008-07-20 10:38:08Z jkoshy $");
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);
}
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