Squashed 'third_party/elfutils/' content from commit 555e15e

Change-Id: I61cde98949e47e5c8c09c33260de17f30921be79
git-subtree-dir: third_party/elfutils
git-subtree-split: 555e15ebe8bf1eb33d00747173cfc80cc65648a4
diff --git a/tests/arsymtest.c b/tests/arsymtest.c
new file mode 100644
index 0000000..c724863
--- /dev/null
+++ b/tests/arsymtest.c
@@ -0,0 +1,136 @@
+/* Copyright (C) 1999, 2000, 2002 Red Hat, Inc.
+   This file is part of elfutils.
+   Written by Ulrich Drepper <drepper@redhat.com>, 1999.
+
+   This file 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; either version 3 of the License, or
+   (at your option) any later version.
+
+   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 this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include <fcntl.h>
+#include <libelf.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+
+int
+main (int argc, char *argv[])
+{
+  int fd;
+  FILE *fp;
+  Elf *elf;
+  Elf_Arsym *arsym;
+  size_t narsym;
+
+  if (argc < 3)
+    exit (1);
+
+  /* Open the archive.  */
+  fd = open (argv[1], O_RDONLY);
+  if (fd == -1)
+    {
+      printf ("Cannot open input file: %m");
+      exit (1);
+    }
+
+  /* Open the output file.  */
+  fp = fopen (argv[2], "w");
+  if (fp == NULL)
+    {
+      printf ("Cannot open output file: %m");
+      exit (1);
+    }
+
+  /* Set the ELF version.  */
+  elf_version (EV_CURRENT);
+
+  /* Create an ELF descriptor.  */
+  elf = elf_begin (fd, ELF_C_READ, NULL);
+  if (elf == NULL)
+    {
+      printf ("Cannot create ELF descriptor: %s\n", elf_errmsg (-1));
+      exit (1);
+    }
+
+  /* If it is no archive punt.  */
+  if (elf_kind (elf) != ELF_K_AR)
+    {
+      printf ("`%s' is no archive\n", argv[1]);
+      exit (1);
+    }
+
+  /* Now get the index of the archive.  */
+  arsym = elf_getarsym (elf, &narsym);
+  if (arsym == NULL)
+    {
+      printf ("Cannot get archive index: %s\n", elf_errmsg (-1));
+      exit (1);
+    }
+
+  /* If there is no element in the index do nothing.  There always is
+     an empty entry at the end which is included in the count and
+     which we want to skip.  */
+  if (narsym-- > 1)
+    while (narsym-- > 0)
+      {
+	Elf *subelf;
+	Elf_Arhdr *arhdr;
+
+	if (elf_rand (elf, arsym[narsym].as_off) != arsym[narsym].as_off)
+	  {
+	    printf ("random access for symbol `%s' fails: %s\n",
+		    arsym[narsym].as_name, elf_errmsg (-1));
+	    exit (1);
+	  }
+
+	subelf = elf_begin (fd, ELF_C_READ, elf);
+	if (subelf == NULL)
+	  {
+	    printf ("Cannot create ELF descriptor for archive member: %s\n",
+		    elf_errmsg (-1));
+	    exit (1);
+	  }
+
+	arhdr = elf_getarhdr (subelf);
+	if (arhdr == NULL)
+	  {
+	    printf ("Cannot get archive header for element `%s': %s\n",
+		    arsym[narsym].as_name, elf_errmsg (-1));
+	    exit (1);
+	  }
+
+	/* Now print what we actually want.  */
+	fprintf (fp, "%s in %s\n", arsym[narsym].as_name, arhdr->ar_name);
+
+	/* Free the ELF descriptor.  */
+	if (elf_end (subelf) != 0)
+	  {
+	    printf ("Error while freeing subELF descriptor: %s\n",
+		    elf_errmsg (-1));
+	    exit (1);
+	  }
+      }
+
+  /* Free the ELF descriptor.  */
+  if (elf_end (elf) != 0)
+    {
+      printf ("Error while freeing ELF descriptor: %s\n", elf_errmsg (-1));
+      exit (1);
+    }
+
+  close (fd);
+  fclose (fp);
+
+  return 0;
+}