diff options
Diffstat (limited to 'libelf/gelf_getverdaux.c')
-rw-r--r-- | libelf/gelf_getverdaux.c | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/libelf/gelf_getverdaux.c b/libelf/gelf_getverdaux.c new file mode 100644 index 0000000..b8bcf14 --- /dev/null +++ b/libelf/gelf_getverdaux.c @@ -0,0 +1,103 @@ +/* Get additional symbol version definition information at the given offset. + Copyright (C) 1999, 2000, 2001, 2002 Red Hat, Inc. + This file is part of Red Hat elfutils. + Written by Ulrich Drepper <drepper@redhat.com>, 1999. + + Red Hat elfutils is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by the + Free Software Foundation; version 2 of the License. + + Red Hat elfutils is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU General Public License along + with Red Hat elfutils; if not, write to the Free Software Foundation, + Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA. + + In addition, as a special exception, Red Hat, Inc. gives You the + additional right to link the code of Red Hat elfutils with code licensed + under any Open Source Initiative certified open source license + (http://www.opensource.org/licenses/index.php) which requires the + distribution of source code with any binary distribution and to + distribute linked combinations of the two. Non-GPL Code permitted under + this exception must only link to the code of Red Hat elfutils through + those well defined interfaces identified in the file named EXCEPTION + found in the source code files (the "Approved Interfaces"). The files + of Non-GPL Code may instantiate templates or use macros or inline + functions from the Approved Interfaces without causing the resulting + work to be covered by the GNU General Public License. Only Red Hat, + Inc. may make changes or additions to the list of Approved Interfaces. + Red Hat's grant of this exception is conditioned upon your not adding + any new exceptions. If you wish to add a new Approved Interface or + exception, please contact Red Hat. You must obey the GNU General Public + License in all respects for all of the Red Hat elfutils code and other + code used in conjunction with Red Hat elfutils except the Non-GPL Code + covered by this exception. If you modify this file, you may extend this + exception to your version of the file, but you are not obligated to do + so. If you do not wish to provide this exception without modification, + you must delete this exception statement from your version and license + this file solely under the GPL without exception. + + Red Hat elfutils is an included package of the Open Invention Network. + An included package of the Open Invention Network is a package for which + Open Invention Network licensees cross-license their patents. No patent + license is granted, either expressly or impliedly, by designation as an + included package. Should you wish to participate in the Open Invention + Network licensing program, please visit www.openinventionnetwork.com + <http://www.openinventionnetwork.com>. */ + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif + +#include <assert.h> +#include <gelf.h> +#include <string.h> + +#include "libelfP.h" + + +GElf_Verdaux * +gelf_getverdaux (data, offset, dst) + Elf_Data *data; + int offset; + GElf_Verdaux *dst; +{ + GElf_Verdaux *result; + + if (data == NULL) + return NULL; + + if (unlikely (data->d_type != ELF_T_VDEF)) + { + __libelf_seterrno (ELF_E_INVALID_HANDLE); + return NULL; + } + + /* It's easy to handle this type. It has the same size for 32 and + 64 bit objects. */ + assert (sizeof (GElf_Verdaux) == sizeof (Elf32_Verdaux)); + assert (sizeof (GElf_Verdaux) == sizeof (Elf64_Verdaux)); + + rwlock_rdlock (((Elf_Data_Scn *) data)->s->elf->lock); + + /* The data is already in the correct form. Just make sure the + index is OK. */ + if (unlikely (offset < 0) + || unlikely (offset + sizeof (GElf_Verdaux) > data->d_size) + || unlikely (offset % __alignof__ (GElf_Verdaux) != 0)) + { + __libelf_seterrno (ELF_E_OFFSET_RANGE); + result = NULL; + } + else + result = (GElf_Verdaux *) memcpy (dst, (char *) data->d_buf + offset, + sizeof (GElf_Verdaux)); + + + rwlock_unlock (((Elf_Data_Scn *) data)->s->elf->lock); + + return result; +} |