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
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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
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21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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32 ELFTC_VCSID("$Id: gelf_symshndx.c 3174 2015-03-27 17:13:41Z emaste $");
35 gelf_getsymshndx(Elf_Data *d, Elf_Data *id, int ndx, GElf_Sym *dst,
43 struct _Libelf_Data *ld, *lid;
45 ld = (struct _Libelf_Data *) d;
46 lid = (struct _Libelf_Data *) id;
48 if (gelf_getsym(d, ndx, dst) == 0)
51 if (lid == NULL || (scn = lid->d_scn) == NULL ||
52 (e = scn->s_elf) == NULL || (e != ld->d_scn->s_elf) ||
54 LIBELF_SET_ERROR(ARGUMENT, 0);
59 assert(ec == ELFCLASS32 || ec == ELFCLASS64);
62 sh_type = scn->s_shdr.s_shdr32.sh_type;
64 sh_type = scn->s_shdr.s_shdr64.sh_type;
66 if (_libelf_xlate_shtype(sh_type) != ELF_T_WORD ||
67 id->d_type != ELF_T_WORD) {
68 LIBELF_SET_ERROR(ARGUMENT, 0);
72 msz = _libelf_msize(ELF_T_WORD, ec, e->e_version);
77 if (msz * (size_t) ndx >= id->d_size) {
78 LIBELF_SET_ERROR(ARGUMENT, 0);
82 *shindex = ((Elf32_Word *) id->d_buf)[ndx];
88 gelf_update_symshndx(Elf_Data *d, Elf_Data *id, int ndx, GElf_Sym *gs,
96 struct _Libelf_Data *ld, *lid;
98 ld = (struct _Libelf_Data *) d;
99 lid = (struct _Libelf_Data *) id;
101 if (gelf_update_sym(d, ndx, gs) == 0)
104 if (lid == NULL || (scn = lid->d_scn) == NULL ||
105 (e = scn->s_elf) == NULL || (e != ld->d_scn->s_elf)) {
106 LIBELF_SET_ERROR(ARGUMENT, 0);
111 assert(ec == ELFCLASS32 || ec == ELFCLASS64);
113 if (ec == ELFCLASS32)
114 sh_type = scn->s_shdr.s_shdr32.sh_type;
116 sh_type = scn->s_shdr.s_shdr64.sh_type;
118 if (_libelf_xlate_shtype(sh_type) != ELF_T_WORD ||
119 d->d_type != ELF_T_WORD) {
120 LIBELF_SET_ERROR(ARGUMENT, 0);
124 msz = _libelf_msize(ELF_T_WORD, ec, e->e_version);
129 if (msz * (size_t) ndx >= id->d_size) {
130 LIBELF_SET_ERROR(ARGUMENT, 0);
134 *(((Elf32_Word *) id->d_buf) + ndx) = xindex;