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79 lines
2.2 KiB
C
79 lines
2.2 KiB
C
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/* Update additional symbol version definition information.
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Copyright (C) 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>, 2001.
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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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int
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gelf_update_verdaux (Elf_Data *data, int offset, GElf_Verdaux *src)
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{
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Elf_Data_Scn *data_scn = (Elf_Data_Scn *) data;
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if (data == NULL)
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return 0;
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/* The types for 32 and 64 bit are the same. Lucky us. */
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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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/* Check whether we have to resize the data buffer. */
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if (unlikely (offset < 0)
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|| unlikely ((offset + sizeof (GElf_Verdaux)) > data_scn->d.d_size))
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{
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__libelf_seterrno (ELF_E_INVALID_INDEX);
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return 0;
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}
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if (unlikely (data_scn->d.d_type != ELF_T_VDEF))
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{
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/* The type of the data better should match. */
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__libelf_seterrno (ELF_E_DATA_MISMATCH);
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return 0;
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}
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rwlock_wrlock (data_scn->s->elf->lock);
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memcpy ((char *) data_scn->d.d_buf + offset, src, sizeof (GElf_Verdaux));
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/* Mark the section as modified. */
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data_scn->s->flags |= ELF_F_DIRTY;
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rwlock_unlock (data_scn->s->elf->lock);
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return 1;
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}
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