rpm/elfutils/libelf/gelf_update_verdaux.c

64 lines
1.8 KiB
C

/* Update additional symbol version definition information.
Copyright (C) 2001, 2002 Red Hat, Inc.
Written by Ulrich Drepper <drepper@redhat.com>, 2001.
This program is Open Source software; you can redistribute it and/or
modify it under the terms of the Open Software License version 1.0 as
published by the Open Source Initiative.
You should have received a copy of the Open Software License along
with this program; if not, you may obtain a copy of the Open Software
License version 1.0 from http://www.opensource.org/licenses/osl.php or
by writing the Open Source Initiative c/o Lawrence Rosen, Esq.,
3001 King Ranch Road, Ukiah, CA 95482. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <assert.h>
#include <gelf.h>
#include <string.h>
#include "libelfP.h"
int
gelf_update_verdaux (Elf_Data *data, int offset, GElf_Verdaux *src)
{
Elf_Data_Scn *data_scn = (Elf_Data_Scn *) data;
if (data == NULL)
return 0;
/* The types for 32 and 64 bit are the same. Lucky us. */
assert (sizeof (GElf_Verdaux) == sizeof (Elf32_Verdaux));
assert (sizeof (GElf_Verdaux) == sizeof (Elf64_Verdaux));
/* Check whether we have to resize the data buffer. */
if (unlikely (offset < 0)
|| unlikely ((offset + sizeof (GElf_Verdaux)) > data_scn->d.d_size))
{
__libelf_seterrno (ELF_E_INVALID_INDEX);
return 0;
}
if (unlikely (data_scn->d.d_type != ELF_T_VDEF))
{
/* The type of the data better should match. */
__libelf_seterrno (ELF_E_DATA_MISMATCH);
return 0;
}
rwlock_wrlock (data_scn->s->elf->lock);
memcpy ((char *) data_scn->d.d_buf + offset, src, sizeof (GElf_Verdaux));
/* Mark the section as modified. */
data_scn->s->flags |= ELF_F_DIRTY;
rwlock_unlock (data_scn->s->elf->lock);
return 1;
}