2 * Copyright (c) 2006,2008 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
27 #include <sys/cdefs.h>
34 ELFTC_VCSID("$Id: gelf_symshndx.c 2283 2011-12-04 04:07:24Z jkoshy $");
37 gelf_getsymshndx(Elf_Data *d, Elf_Data *id, int ndx, GElf_Sym *dst,
45 struct _Libelf_Data *ld, *lid;
47 ld = (struct _Libelf_Data *) d;
48 lid = (struct _Libelf_Data *) id;
50 if (gelf_getsym(d, ndx, dst) == 0)
53 if (lid == NULL || (scn = lid->d_scn) == NULL ||
54 (e = scn->s_elf) == NULL || (e != ld->d_scn->s_elf) ||
56 LIBELF_SET_ERROR(ARGUMENT, 0);
61 assert(ec == ELFCLASS32 || ec == ELFCLASS64);
64 sh_type = scn->s_shdr.s_shdr32.sh_type;
66 sh_type = scn->s_shdr.s_shdr64.sh_type;
68 if (_libelf_xlate_shtype(sh_type) != ELF_T_WORD ||
69 id->d_type != ELF_T_WORD) {
70 LIBELF_SET_ERROR(ARGUMENT, 0);
74 msz = _libelf_msize(ELF_T_WORD, ec, e->e_version);
78 if (msz * ndx >= id->d_size) {
79 LIBELF_SET_ERROR(ARGUMENT, 0);
83 *shindex = ((Elf32_Word *) id->d_buf)[ndx];
89 gelf_update_symshndx(Elf_Data *d, Elf_Data *id, int ndx, GElf_Sym *gs,
97 struct _Libelf_Data *ld, *lid;
99 ld = (struct _Libelf_Data *) d;
100 lid = (struct _Libelf_Data *) id;
102 if (gelf_update_sym(d, ndx, gs) == 0)
105 if (lid == NULL || (scn = lid->d_scn) == NULL ||
106 (e = scn->s_elf) == NULL || (e != ld->d_scn->s_elf)) {
107 LIBELF_SET_ERROR(ARGUMENT, 0);
112 assert(ec == ELFCLASS32 || ec == ELFCLASS64);
114 if (ec == ELFCLASS32)
115 sh_type = scn->s_shdr.s_shdr32.sh_type;
117 sh_type = scn->s_shdr.s_shdr64.sh_type;
119 if (_libelf_xlate_shtype(sh_type) != ELF_T_WORD ||
120 d->d_type != ELF_T_WORD) {
121 LIBELF_SET_ERROR(ARGUMENT, 0);
125 msz = _libelf_msize(ELF_T_WORD, ec, e->e_version);
128 if (msz * ndx >= id->d_size) {
129 LIBELF_SET_ERROR(ARGUMENT, 0);
133 *(((Elf32_Word *) id->d_buf) + ndx) = xindex;