2 * Copyright (c) 2011 Joseph Koshy
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 ELFTC_VCSID("$Id: libelf_memory.c 3013 2014-03-23 06:16:59Z jkoshy $");
37 * Create an ELF descriptor for a memory image, optionally reporting
42 _libelf_memory(unsigned char *image, size_t sz, int reporterror)
47 unsigned int e_byteorder, e_version;
49 assert(image != NULL);
52 if ((e = _libelf_allocate_elf()) == NULL)
55 e->e_cmd = ELF_C_READ;
60 #define LIBELF_IS_ELF(P) ((P)[EI_MAG0] == ELFMAG0 && \
61 (P)[EI_MAG1] == ELFMAG1 && (P)[EI_MAG2] == ELFMAG2 && \
62 (P)[EI_MAG3] == ELFMAG3)
64 if (sz > EI_NIDENT && LIBELF_IS_ELF(image)) {
65 e_byteorder = image[EI_DATA];
66 e_class = image[EI_CLASS];
67 e_version = image[EI_VERSION];
71 if (e_version > EV_CURRENT)
72 error = ELF_E_VERSION;
73 else if ((e_byteorder != ELFDATA2LSB && e_byteorder !=
74 ELFDATA2MSB) || (e_class != ELFCLASS32 && e_class !=
78 if (error != ELF_E_NONE) {
80 LIBELF_PRIVATE(error) = LIBELF_ERROR(error, 0);
81 (void) _libelf_release_elf(e);
85 _libelf_init_elf(e, ELF_K_ELF);
87 e->e_byteorder = e_byteorder;
89 e->e_version = e_version;
91 } else if (sz >= SARMAG &&
92 strncmp((const char *) image, ARMAG, (size_t) SARMAG) == 0)
93 return (_libelf_ar_open(e, reporterror));