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      1 /*	$NetBSD: elf_shstrndx.c,v 1.7 2026/05/17 21:40:50 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 <ar.h>
     32 #include <libelf.h>
     33 
     34 #include "_libelf.h"
     35 
     36 ELFTC_VCSID("Id: elf_shstrndx.c 4074 2025-01-07 15:34:21Z jkoshy");
     37 
     38 __RCSID("$NetBSD: elf_shstrndx.c,v 1.7 2026/05/17 21:40:50 jkoshy Exp $");
     39 
     40 static int
     41 _libelf_getshdrstrndx(Elf *e, size_t *strndx)
     42 {
     43 	void *eh;
     44 	unsigned int ec;
     45 
     46 	if (e == NULL || e->e_kind != ELF_K_ELF ||
     47 	    ((ec = e->e_class) != ELFCLASS32 && ec != ELFCLASS64)) {
     48 		LIBELF_SET_ERROR(ARGUMENT, 0);
     49 		return (-1);
     50 	}
     51 
     52 	if ((eh = _libelf_ehdr(e, ec, 0)) == NULL)
     53 		return (-1);
     54 
     55 	*strndx = e->e_u.e_elf.e_strndx;
     56 
     57 	return (0);
     58 }
     59 
     60 int
     61 elf_getshdrstrndx(Elf *e, size_t *strndx)
     62 {
     63 	return (_libelf_getshdrstrndx(e, strndx));
     64 }
     65 
     66 int
     67 elf_getshstrndx(Elf *e, size_t *strndx)	/* Deprecated API. */
     68 {
     69 	return (_libelf_getshdrstrndx(e, strndx) >= 0);
     70 }
     71 
     72 int
     73 elf_setshstrndx(Elf *e, size_t strndx)
     74 {
     75 	void *eh;
     76 	unsigned int ec;
     77 
     78 	if (e == NULL || e->e_kind != ELF_K_ELF ||
     79 	    ((ec = e->e_class) != ELFCLASS32 && ec != ELFCLASS64) ||
     80 	    ((eh = _libelf_ehdr(e, ec, 0)) == NULL)) {
     81 		LIBELF_SET_ERROR(ARGUMENT, 0);
     82 		return (0);
     83 	}
     84 
     85 	return (_libelf_setshstrndx(e, eh, ec, strndx));
     86 }
     87