1 files changed, 77 insertions, 0 deletions
diff --git a/libelf/gelf_getversym.c b/libelf/gelf_getversym.c
new file mode 100644
index 00000000..9274b142
--- /dev/null
+++ b/libelf/gelf_getversym.c
@@ -0,0 +1,77 @@
+/* Get symbol version information at the given index.
+   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_Versym *
+gelf_getversym (data, ndx, dst)
+     Elf_Data *data;
+     int ndx;
+     GElf_Versym *dst;
+{
+  Elf_Data_Scn *data_scn = (Elf_Data_Scn *) data;
+  Elf_Scn *scn;
+  GElf_Versym *result;
+
+  if (data == NULL)
+    return NULL;
+
+  if (unlikely (data->d_type != ELF_T_HALF))
+    {
+      __libelf_seterrno (ELF_E_INVALID_HANDLE);
+      return NULL;
+    }
+
+  /* This is the one place where we have to take advantage of the fact
+     that an `Elf_Data' pointer is also a pointer to `Elf_Data_Scn'.
+     The interface is broken so that it requires this hack.  */
+  scn = data_scn->s;
+
+  /* It's easy to handle this type.  It has the same size for 32 and
+     64 bit objects.  */
+  assert (sizeof (GElf_Versym) == sizeof (Elf32_Versym));
+  assert (sizeof (GElf_Versym) == sizeof (Elf64_Versym));
+
+  rwlock_rdlock (scn->elf->lock);
+
+  /* The data is already in the correct form.  Just make sure the
+     index is OK.  */
+  if (unlikely ((ndx + 1) * sizeof (GElf_Versym) > data->d_size))
+    {
+      __libelf_seterrno (ELF_E_INVALID_INDEX);
+      result = NULL;
+    }
+  else
+    {
+      *dst = ((GElf_Versym *) data->d_buf)[ndx];
+
+      result = dst;
+    }
+
+  rwlock_unlock (scn->elf->lock);
+
+  return result;
+}