Ulrich Drepper | b08d5a8 | 2005-07-26 05:00:05 +0000 | [diff] [blame] | 1 | /* Update required symbol version information. |
| 2 | Copyright (C) 2001, 2002 Red Hat, Inc. |
Mark Wielaard | de2ed97 | 2012-06-05 17:15:16 +0200 | [diff] [blame] | 3 | This file is part of elfutils. |
Ulrich Drepper | b08d5a8 | 2005-07-26 05:00:05 +0000 | [diff] [blame] | 4 | Written by Ulrich Drepper <drepper@redhat.com>, 2001. |
| 5 | |
Mark Wielaard | de2ed97 | 2012-06-05 17:15:16 +0200 | [diff] [blame] | 6 | This file is free software; you can redistribute it and/or modify |
| 7 | it under the terms of either |
Ulrich Drepper | b08d5a8 | 2005-07-26 05:00:05 +0000 | [diff] [blame] | 8 | |
Mark Wielaard | de2ed97 | 2012-06-05 17:15:16 +0200 | [diff] [blame] | 9 | * the GNU Lesser General Public License as published by the Free |
| 10 | Software Foundation; either version 3 of the License, or (at |
| 11 | your option) any later version |
| 12 | |
| 13 | or |
| 14 | |
| 15 | * the GNU General Public License as published by the Free |
| 16 | Software Foundation; either version 2 of the License, or (at |
| 17 | your option) any later version |
| 18 | |
| 19 | or both in parallel, as here. |
| 20 | |
| 21 | elfutils is distributed in the hope that it will be useful, but |
Ulrich Drepper | 361df7d | 2006-04-04 21:38:57 +0000 | [diff] [blame] | 22 | WITHOUT ANY WARRANTY; without even the implied warranty of |
| 23 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 24 | General Public License for more details. |
Ulrich Drepper | b08d5a8 | 2005-07-26 05:00:05 +0000 | [diff] [blame] | 25 | |
Mark Wielaard | de2ed97 | 2012-06-05 17:15:16 +0200 | [diff] [blame] | 26 | You should have received copies of the GNU General Public License and |
| 27 | the GNU Lesser General Public License along with this program. If |
| 28 | not, see <http://www.gnu.org/licenses/>. */ |
Ulrich Drepper | b08d5a8 | 2005-07-26 05:00:05 +0000 | [diff] [blame] | 29 | |
| 30 | #ifdef HAVE_CONFIG_H |
| 31 | # include <config.h> |
| 32 | #endif |
| 33 | |
| 34 | #include <assert.h> |
| 35 | #include <gelf.h> |
| 36 | #include <string.h> |
| 37 | |
| 38 | #include "libelfP.h" |
| 39 | |
| 40 | |
| 41 | int |
| 42 | gelf_update_verneed (data, offset, src) |
| 43 | Elf_Data *data; |
| 44 | int offset; |
| 45 | GElf_Verneed *src; |
| 46 | { |
| 47 | Elf_Data_Scn *data_scn = (Elf_Data_Scn *) data; |
| 48 | |
| 49 | if (data == NULL) |
| 50 | return 0; |
| 51 | |
| 52 | /* The types for 32 and 64 bit are the same. Lucky us. */ |
| 53 | assert (sizeof (GElf_Verneed) == sizeof (Elf32_Verneed)); |
| 54 | assert (sizeof (GElf_Verneed) == sizeof (Elf64_Verneed)); |
| 55 | |
| 56 | /* Check whether we have to resize the data buffer. */ |
| 57 | if (unlikely (offset < 0) |
| 58 | || unlikely ((offset + sizeof (GElf_Verneed)) > data_scn->d.d_size)) |
| 59 | { |
| 60 | __libelf_seterrno (ELF_E_INVALID_INDEX); |
| 61 | return 0; |
| 62 | } |
| 63 | |
| 64 | if (unlikely (data_scn->d.d_type != ELF_T_VNEED)) |
| 65 | { |
| 66 | /* The type of the data better should match. */ |
| 67 | __libelf_seterrno (ELF_E_DATA_MISMATCH); |
| 68 | return 0; |
| 69 | } |
| 70 | |
Roland McGrath | b4d6f0f | 2008-08-25 22:55:17 +0000 | [diff] [blame] | 71 | rwlock_wrlock (data_scn->s->elf->lock); |
Ulrich Drepper | b08d5a8 | 2005-07-26 05:00:05 +0000 | [diff] [blame] | 72 | |
| 73 | memcpy ((char *) data_scn->d.d_buf + offset, src, sizeof (GElf_Verneed)); |
| 74 | |
| 75 | /* Mark the section as modified. */ |
| 76 | data_scn->s->flags |= ELF_F_DIRTY; |
| 77 | |
Roland McGrath | b4d6f0f | 2008-08-25 22:55:17 +0000 | [diff] [blame] | 78 | rwlock_unlock (data_scn->s->elf->lock); |
Ulrich Drepper | b08d5a8 | 2005-07-26 05:00:05 +0000 | [diff] [blame] | 79 | |
| 80 | return 1; |
| 81 | } |