1 /* Get additional symbol information from symbol table at the given index.
2 Copyright (C) 2000, 2001, 2002 Red Hat, Inc.
3 Written by Ulrich Drepper <drepper@redhat.com>, 2000.
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation, version 2.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software Foundation,
16 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
17
18 #ifdef HAVE_CONFIG_H
19 # include <config.h>
20 #endif
21
22 #include <assert.h>
23 #include <gelf.h>
24 #include <string.h>
25
26 #include "libelfP.h"
27
28
29 GElf_Syminfo *
gelf_getsyminfo(data,ndx,dst)30 gelf_getsyminfo (data, ndx, dst)
31 Elf_Data *data;
32 int ndx;
33 GElf_Syminfo *dst;
34 {
35 GElf_Syminfo *result = NULL;
36
37 if (data == NULL)
38 return NULL;
39
40 if (unlikely (data->d_type != ELF_T_SYMINFO))
41 {
42 __libelf_seterrno (ELF_E_INVALID_HANDLE);
43 return NULL;
44 }
45
46 /* The types for 32 and 64 bit are the same. Lucky us. */
47 assert (sizeof (GElf_Syminfo) == sizeof (Elf32_Syminfo));
48 assert (sizeof (GElf_Syminfo) == sizeof (Elf64_Syminfo));
49
50 rwlock_rdlock (((Elf_Data_Scn *) data)->s->elf->lock);
51
52 /* The data is already in the correct form. Just make sure the
53 index is OK. */
54 if (unlikely ((ndx + 1) * sizeof (GElf_Syminfo) > data->d_size))
55 {
56 __libelf_seterrno (ELF_E_INVALID_INDEX);
57 goto out;
58 }
59
60 *dst = ((GElf_Syminfo *) data->d_buf)[ndx];
61
62 result = dst;
63
64 out:
65 rwlock_unlock (((Elf_Data_Scn *) data)->s->elf->lock);
66
67 return result;
68 }
69