1 files changed, 80 insertions, 0 deletions
diff --git a/libelf/gelf_getlib.c b/libelf/gelf_getlib.c
new file mode 100644
index 00000000..880817e6
--- /dev/null
+++ b/libelf/gelf_getlib.c
@@ -0,0 +1,80 @@
+/* Get library from table at the given index.
+   Copyright (C) 2004, 2005, 2009, 2014 Red Hat, Inc.
+   This file is part of elfutils.
+   Written by Ulrich Drepper <drepper@redhat.com>, 2004.
+
+   This file is free software; you can redistribute it and/or modify
+   it under the terms of either
+
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at
+       your option) any later version
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at
+       your option) any later version
+
+   or both in parallel, as here.
+
+   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 copies of the GNU General Public License and
+   the GNU Lesser General Public License along with this program.  If
+   not, see <http://www.gnu.org/licenses/>.  */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <assert.h>
+#include <gelf.h>
+#include <string.h>
+
+#include "libelfP.h"
+
+
+GElf_Lib *
+gelf_getlib (data, ndx, dst)
+     Elf_Data *data;
+     int ndx;
+     GElf_Lib *dst;
+{
+  if (data == NULL)
+    return NULL;
+
+  if (unlikely (data->d_type != ELF_T_LIB))
+    {
+      __libelf_seterrno (ELF_E_INVALID_HANDLE);
+      return NULL;
+    }
+
+  Elf_Data_Scn *data_scn = (Elf_Data_Scn *) data;
+
+  rwlock_rdlock (data_scn->s->elf->lock);
+
+  /* The on disk format of Elf32_Lib and Elf64_Lib is identical.  So
+     we can simplify things significantly.  */
+  assert (sizeof (GElf_Lib) == sizeof (Elf32_Lib));
+  assert (sizeof (GElf_Lib) == sizeof (Elf64_Lib));
+
+  /* The data is already in the correct form.  Just make sure the
+     index is OK.  */
+  GElf_Lib *result = NULL;
+  if (INVALID_NDX (ndx, GElf_Lib, data))
+    __libelf_seterrno (ELF_E_INVALID_INDEX);
+  else
+    {
+      *dst = ((GElf_Lib *) data->d_buf)[ndx];
+
+      result = dst;
+    }
+
+  rwlock_unlock (data_scn->s->elf->lock);
+
+  return result;
+}