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      1 /*	$NetBSD: libelf_shdr.c,v 1.6 2025/12/25 18:58:13 jkoshy Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2006,2008 Joseph Koshy
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  */
     28 
     29 #include <sys/cdefs.h>
     30 
     31 #include <gelf.h>
     32 #include <libelf.h>
     33 
     34 #include "_libelf.h"
     35 
     36 ELFTC_VCSID("Id: libelf_shdr.c 4074 2025-01-07 15:34:21Z jkoshy");
     37 
     38 __RCSID("$NetBSD: libelf_shdr.c,v 1.6 2025/12/25 18:58:13 jkoshy Exp $");
     39 
     40 void *
     41 _libelf_getshdr(Elf_Scn *s, unsigned int ec)
     42 {
     43 	Elf *e;
     44 
     45 	if (s == NULL || (e = s->s_elf) == NULL ||
     46 	    e->e_kind != ELF_K_ELF) {
     47 		LIBELF_SET_ERROR(ARGUMENT, 0);
     48 		return (NULL);
     49 	}
     50 
     51 	if (ec == ELFCLASSNONE)
     52 		ec = e->e_class;
     53 
     54 	if (ec != e->e_class) {
     55 		LIBELF_SET_ERROR(CLASS, 0);
     56 		return (NULL);
     57 	}
     58 
     59 	return ((void *) &s->s_shdr);
     60 }
     61