xref: /dflybsd-src/contrib/elftoolchain/libelf/elf_shstrndx.c (revision 91deece701e3d2bfb30869db2dd6a3c0d67cfae0)
1*f8fb3368SJohn Marino /*-
2*f8fb3368SJohn Marino  * Copyright (c) 2006,2008 Joseph Koshy
3*f8fb3368SJohn Marino  * All rights reserved.
4*f8fb3368SJohn Marino  *
5*f8fb3368SJohn Marino  * Redistribution and use in source and binary forms, with or without
6*f8fb3368SJohn Marino  * modification, are permitted provided that the following conditions
7*f8fb3368SJohn Marino  * are met:
8*f8fb3368SJohn Marino  * 1. Redistributions of source code must retain the above copyright
9*f8fb3368SJohn Marino  *    notice, this list of conditions and the following disclaimer.
10*f8fb3368SJohn Marino  * 2. Redistributions in binary form must reproduce the above copyright
11*f8fb3368SJohn Marino  *    notice, this list of conditions and the following disclaimer in the
12*f8fb3368SJohn Marino  *    documentation and/or other materials provided with the distribution.
13*f8fb3368SJohn Marino  *
14*f8fb3368SJohn Marino  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15*f8fb3368SJohn Marino  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16*f8fb3368SJohn Marino  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17*f8fb3368SJohn Marino  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18*f8fb3368SJohn Marino  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19*f8fb3368SJohn Marino  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20*f8fb3368SJohn Marino  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21*f8fb3368SJohn Marino  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22*f8fb3368SJohn Marino  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23*f8fb3368SJohn Marino  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24*f8fb3368SJohn Marino  * SUCH DAMAGE.
25*f8fb3368SJohn Marino  */
26*f8fb3368SJohn Marino 
27*f8fb3368SJohn Marino #include <ar.h>
28*f8fb3368SJohn Marino #include <libelf.h>
29*f8fb3368SJohn Marino 
30*f8fb3368SJohn Marino #include "_libelf.h"
31*f8fb3368SJohn Marino 
32*f8fb3368SJohn Marino ELFTC_VCSID("$Id: elf_shstrndx.c 3174 2015-03-27 17:13:41Z emaste $");
33*f8fb3368SJohn Marino 
34*f8fb3368SJohn Marino static int
_libelf_getshdrstrndx(Elf * e,size_t * strndx)35*f8fb3368SJohn Marino _libelf_getshdrstrndx(Elf *e, size_t *strndx)
36*f8fb3368SJohn Marino {
37*f8fb3368SJohn Marino 	void *eh;
38*f8fb3368SJohn Marino 	int ec;
39*f8fb3368SJohn Marino 
40*f8fb3368SJohn Marino 	if (e == NULL || e->e_kind != ELF_K_ELF ||
41*f8fb3368SJohn Marino 	    ((ec = e->e_class) != ELFCLASS32 && ec != ELFCLASS64)) {
42*f8fb3368SJohn Marino 		LIBELF_SET_ERROR(ARGUMENT, 0);
43*f8fb3368SJohn Marino 		return (-1);
44*f8fb3368SJohn Marino 	}
45*f8fb3368SJohn Marino 
46*f8fb3368SJohn Marino 	if ((eh = _libelf_ehdr(e, ec, 0)) == NULL)
47*f8fb3368SJohn Marino 		return (-1);
48*f8fb3368SJohn Marino 
49*f8fb3368SJohn Marino 	*strndx = e->e_u.e_elf.e_strndx;
50*f8fb3368SJohn Marino 
51*f8fb3368SJohn Marino 	return (0);
52*f8fb3368SJohn Marino }
53*f8fb3368SJohn Marino 
54*f8fb3368SJohn Marino int
elf_getshdrstrndx(Elf * e,size_t * strndx)55*f8fb3368SJohn Marino elf_getshdrstrndx(Elf *e, size_t *strndx)
56*f8fb3368SJohn Marino {
57*f8fb3368SJohn Marino 	return (_libelf_getshdrstrndx(e, strndx));
58*f8fb3368SJohn Marino }
59*f8fb3368SJohn Marino 
60*f8fb3368SJohn Marino int
elf_getshstrndx(Elf * e,size_t * strndx)61*f8fb3368SJohn Marino elf_getshstrndx(Elf *e, size_t *strndx)	/* Deprecated API. */
62*f8fb3368SJohn Marino {
63*f8fb3368SJohn Marino 	return (_libelf_getshdrstrndx(e, strndx) >= 0);
64*f8fb3368SJohn Marino }
65*f8fb3368SJohn Marino 
66*f8fb3368SJohn Marino int
elf_setshstrndx(Elf * e,size_t strndx)67*f8fb3368SJohn Marino elf_setshstrndx(Elf *e, size_t strndx)
68*f8fb3368SJohn Marino {
69*f8fb3368SJohn Marino 	void *eh;
70*f8fb3368SJohn Marino 	int ec;
71*f8fb3368SJohn Marino 
72*f8fb3368SJohn Marino 	if (e == NULL || e->e_kind != ELF_K_ELF ||
73*f8fb3368SJohn Marino 	    ((ec = e->e_class) != ELFCLASS32 && ec != ELFCLASS64) ||
74*f8fb3368SJohn Marino 	    ((eh = _libelf_ehdr(e, ec, 0)) == NULL)) {
75*f8fb3368SJohn Marino 		LIBELF_SET_ERROR(ARGUMENT, 0);
76*f8fb3368SJohn Marino 		return (0);
77*f8fb3368SJohn Marino 	}
78*f8fb3368SJohn Marino 
79*f8fb3368SJohn Marino 	return (_libelf_setshstrndx(e, eh, ec, strndx));
80*f8fb3368SJohn Marino }
81