12de3b87aSKai Wang /*-
22de3b87aSKai Wang * Copyright (c) 2006,2008 Joseph Koshy
32de3b87aSKai Wang * All rights reserved.
42de3b87aSKai Wang *
52de3b87aSKai Wang * Redistribution and use in source and binary forms, with or without
62de3b87aSKai Wang * modification, are permitted provided that the following conditions
72de3b87aSKai Wang * are met:
82de3b87aSKai Wang * 1. Redistributions of source code must retain the above copyright
92de3b87aSKai Wang * notice, this list of conditions and the following disclaimer.
102de3b87aSKai Wang * 2. Redistributions in binary form must reproduce the above copyright
112de3b87aSKai Wang * notice, this list of conditions and the following disclaimer in the
122de3b87aSKai Wang * documentation and/or other materials provided with the distribution.
132de3b87aSKai Wang *
142de3b87aSKai Wang * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
152de3b87aSKai Wang * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
162de3b87aSKai Wang * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
172de3b87aSKai Wang * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
182de3b87aSKai Wang * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
192de3b87aSKai Wang * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
202de3b87aSKai Wang * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
212de3b87aSKai Wang * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
222de3b87aSKai Wang * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
232de3b87aSKai Wang * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
242de3b87aSKai Wang * SUCH DAMAGE.
252de3b87aSKai Wang */
262de3b87aSKai Wang
272de3b87aSKai Wang #include <ar.h>
282de3b87aSKai Wang #include <assert.h>
292de3b87aSKai Wang #include <libelf.h>
302de3b87aSKai Wang
312de3b87aSKai Wang #include "_libelf.h"
322de3b87aSKai Wang
33*d003e0d7SEd Maste ELFTC_VCSID("$Id: elf_getident.c 3712 2019-03-16 22:23:34Z jkoshy $");
342de3b87aSKai Wang
352de3b87aSKai Wang char *
elf_getident(Elf * e,size_t * sz)362de3b87aSKai Wang elf_getident(Elf *e, size_t *sz)
372de3b87aSKai Wang {
382de3b87aSKai Wang
392de3b87aSKai Wang if (e == NULL) {
402de3b87aSKai Wang LIBELF_SET_ERROR(ARGUMENT, 0);
412de3b87aSKai Wang goto error;
422de3b87aSKai Wang }
432de3b87aSKai Wang
442de3b87aSKai Wang if (e->e_cmd == ELF_C_WRITE && e->e_rawfile == NULL) {
452de3b87aSKai Wang LIBELF_SET_ERROR(SEQUENCE, 0);
462de3b87aSKai Wang goto error;
472de3b87aSKai Wang }
482de3b87aSKai Wang
492de3b87aSKai Wang assert(e->e_kind != ELF_K_AR || e->e_cmd == ELF_C_READ);
502de3b87aSKai Wang
512de3b87aSKai Wang if (sz) {
522de3b87aSKai Wang if (e->e_kind == ELF_K_AR)
532de3b87aSKai Wang *sz = SARMAG;
542de3b87aSKai Wang else if (e->e_kind == ELF_K_ELF)
552de3b87aSKai Wang *sz = EI_NIDENT;
562de3b87aSKai Wang else
57*d003e0d7SEd Maste *sz = (size_t) e->e_rawsize;
582de3b87aSKai Wang }
592de3b87aSKai Wang
602de3b87aSKai Wang return ((char *) e->e_rawfile);
612de3b87aSKai Wang
622de3b87aSKai Wang error:
632de3b87aSKai Wang if (sz)
642de3b87aSKai Wang *sz = 0;
652de3b87aSKai Wang return (NULL);
662de3b87aSKai Wang }
67