1 /* Update additional symbol information in 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 <stdlib.h>
25
26 #include "libelfP.h"
27
28
29 int
gelf_update_syminfo(data,ndx,src)30 gelf_update_syminfo (data, ndx, src)
31 Elf_Data *data;
32 int ndx;
33 GElf_Syminfo *src;
34 {
35 Elf_Data_Scn *data_scn = (Elf_Data_Scn *) data;
36 Elf_Scn *scn;
37 int result = 0;
38
39 if (data == NULL)
40 return 0;
41
42 if (unlikely (ndx < 0))
43 {
44 __libelf_seterrno (ELF_E_INVALID_INDEX);
45 return 0;
46 }
47
48 if (unlikely (data_scn->d.d_type != ELF_T_SYMINFO))
49 {
50 /* The type of the data better should match. */
51 __libelf_seterrno (ELF_E_DATA_MISMATCH);
52 return 0;
53 }
54
55 /* The types for 32 and 64 bit are the same. Lucky us. */
56 assert (sizeof (GElf_Syminfo) == sizeof (Elf32_Syminfo));
57 assert (sizeof (GElf_Syminfo) == sizeof (Elf64_Syminfo));
58
59 scn = data_scn->s;
60 rwlock_wrlock (scn->elf->lock);
61
62 /* Check whether we have to resize the data buffer. */
63 if (unlikely ((ndx + 1) * sizeof (GElf_Syminfo) > data_scn->d.d_size))
64 {
65 __libelf_seterrno (ELF_E_INVALID_INDEX);
66 goto out;
67 }
68
69 ((GElf_Syminfo *) data_scn->d.d_buf)[ndx] = *src;
70
71 result = 1;
72
73 /* Mark the section as modified. */
74 scn->flags |= ELF_F_DIRTY;
75
76 out:
77 rwlock_unlock (scn->elf->lock);
78
79 return result;
80 }
81