1 files changed, 72 insertions, 0 deletions
diff --git a/libelf/gelf_getvernaux.c b/libelf/gelf_getvernaux.c
new file mode 100644
index 00000000..fbaa109a
--- /dev/null
+++ b/libelf/gelf_getvernaux.c
@@ -0,0 +1,72 @@
+/* Get additional required symbol version information at the given offset.
+   Copyright (C) 1999, 2000, 2001, 2002 Red Hat, Inc.
+   Written by Ulrich Drepper <drepper@redhat.com>, 1999.
+
+   This program 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.
+
+   This program 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 this program; if not, write to the Free Software Foundation,
+   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <assert.h>
+#include <gelf.h>
+#include <string.h>
+
+#include "libelfP.h"
+
+
+GElf_Vernaux *
+gelf_getvernaux (data, offset, dst)
+     Elf_Data *data;
+     int offset;
+     GElf_Vernaux *dst;
+{
+  GElf_Vernaux *result;
+
+  if (data == NULL)
+    return NULL;
+
+  if (unlikely (data->d_type != ELF_T_VNEED))
+    {
+      __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.  And fortunately the `ElfXXX_Vernaux' records
+     also have the same size.  */
+  assert (sizeof (GElf_Vernaux) == sizeof (Elf32_Verneed));
+  assert (sizeof (GElf_Vernaux) == sizeof (Elf64_Verneed));
+  assert (sizeof (GElf_Vernaux) == sizeof (Elf32_Vernaux));
+  assert (sizeof (GElf_Vernaux) == sizeof (Elf64_Vernaux));
+
+  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_Vernaux) > data->d_size)
+      || unlikely (offset % sizeof (GElf_Vernaux) != 0))
+    {
+      __libelf_seterrno (ELF_E_OFFSET_RANGE);
+      result = NULL;
+    }
+  else
+    result = (GElf_Vernaux *) memcpy (dst, (char *) data->d_buf + offset,
+				      sizeof (GElf_Verneed));
+
+  rwlock_unlock (((Elf_Data_Scn *) data)->s->elf->lock);
+
+  return result;
+}