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79 lines
2.3 KiB
79 lines
2.3 KiB
/* Get additional symbol version definition information at the given offset. |
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Copyright (C) 1999, 2000, 2001, 2002, 2015 Red Hat, Inc. |
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This file is part of elfutils. |
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Written by Ulrich Drepper <drepper@redhat.com>, 1999. |
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This file is free software; you can redistribute it and/or modify |
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it under the terms of either |
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* the GNU Lesser General Public License as published by the Free |
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Software Foundation; either version 3 of the License, or (at |
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your option) any later version |
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or |
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* the GNU General Public License as published by the Free |
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Software Foundation; either version 2 of the License, or (at |
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your option) any later version |
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or both in parallel, as here. |
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elfutils is distributed in the hope that it will be useful, but |
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WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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General Public License for more details. |
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You should have received copies of the GNU General Public License and |
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the GNU Lesser General Public License along with this program. If |
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not, see <http://www.gnu.org/licenses/>. */ |
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#ifdef HAVE_CONFIG_H |
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# include <config.h> |
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#endif |
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#include <assert.h> |
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#include <gelf.h> |
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#include <string.h> |
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#include "libelfP.h" |
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GElf_Verdaux * |
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gelf_getverdaux (Elf_Data *data, int offset, GElf_Verdaux *dst) |
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{ |
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GElf_Verdaux *result; |
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if (data == NULL) |
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return NULL; |
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if (unlikely (data->d_type != ELF_T_VDEF)) |
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{ |
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__libelf_seterrno (ELF_E_INVALID_HANDLE); |
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return NULL; |
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} |
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/* It's easy to handle this type. It has the same size for 32 and |
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64 bit objects. */ |
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assert (sizeof (GElf_Verdaux) == sizeof (Elf32_Verdaux)); |
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assert (sizeof (GElf_Verdaux) == sizeof (Elf64_Verdaux)); |
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rwlock_rdlock (((Elf_Data_Scn *) data)->s->elf->lock); |
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/* The data is already in the correct form. Just make sure the |
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index is OK. */ |
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if (unlikely (offset < 0) |
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|| unlikely (offset + sizeof (GElf_Verdaux) > data->d_size) |
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|| unlikely (offset % __alignof__ (GElf_Verdaux) != 0)) |
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{ |
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__libelf_seterrno (ELF_E_OFFSET_RANGE); |
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result = NULL; |
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} |
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else |
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result = (GElf_Verdaux *) memcpy (dst, (char *) data->d_buf + offset, |
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sizeof (GElf_Verdaux)); |
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rwlock_unlock (((Elf_Data_Scn *) data)->s->elf->lock); |
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return result; |
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}
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