2 * Copyright (c) 2006 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>
28 __FBSDID("$FreeBSD$");
30 #include <sys/limits.h>
38 gelf_getsymshndx(Elf_Data *d, Elf_Data *id, int ndx, GElf_Sym *dst,
47 if (gelf_getsym(d, ndx, dst) == 0)
50 if (id == NULL || (scn = id->d_scn) == NULL ||
51 (e = scn->s_elf) == NULL || (e != d->d_scn->s_elf) ||
53 LIBELF_SET_ERROR(ARGUMENT, 0);
58 assert(ec == ELFCLASS32 || ec == ELFCLASS64);
61 sh_type = scn->s_shdr.s_shdr32.sh_type;
63 sh_type = scn->s_shdr.s_shdr64.sh_type;
65 if (_libelf_xlate_shtype(sh_type) != ELF_T_WORD ||
66 id->d_type != ELF_T_WORD) {
67 LIBELF_SET_ERROR(ARGUMENT, 0);
71 msz = _libelf_msize(ELF_T_WORD, ec, e->e_version);
75 if (msz * ndx >= id->d_size) {
76 LIBELF_SET_ERROR(ARGUMENT, 0);
80 *shindex = ((Elf32_Word *) id->d_buf)[ndx];
86 gelf_update_symshndx(Elf_Data *d, Elf_Data *id, int ndx, GElf_Sym *gs,
95 if (gelf_update_sym(d, ndx, gs) == 0)
98 if (id == NULL || (scn = id->d_scn) == NULL ||
99 (e = scn->s_elf) == NULL || (e != d->d_scn->s_elf)) {
100 LIBELF_SET_ERROR(ARGUMENT, 0);
105 assert(ec == ELFCLASS32 || ec == ELFCLASS64);
107 if (ec == ELFCLASS32)
108 sh_type = scn->s_shdr.s_shdr32.sh_type;
110 sh_type = scn->s_shdr.s_shdr64.sh_type;
112 if (_libelf_xlate_shtype(sh_type) != ELF_T_WORD ||
113 d->d_type != ELF_T_WORD) {
114 LIBELF_SET_ERROR(ARGUMENT, 0);
118 msz = _libelf_msize(ELF_T_WORD, ec, e->e_version);
121 if (msz * ndx >= id->d_size) {
122 LIBELF_SET_ERROR(ARGUMENT, 0);
126 *(((Elf32_Word *) id->d_buf) + ndx) = xindex;