1 files changed, 101 insertions, 0 deletions
diff --git a/tests/elfgetzdata.c b/tests/elfgetzdata.c
new file mode 100644
index 00000000..9176d4f5
--- /dev/null
+++ b/tests/elfgetzdata.c
@@ -0,0 +1,101 @@
+/* Copyright (C) 2015 Red Hat, Inc.
+   This file is part of elfutils.
+
+   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/>.  */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <inttypes.h>
+#include <libelf.h>
+#include <gelf.h>
+#include <stdio.h>
+#include <unistd.h>
+
+
+int
+main (int argc, char *argv[])
+{
+  int result = 0;
+  int cnt;
+
+  elf_version (EV_CURRENT);
+
+  for (cnt = 1; cnt < argc; ++cnt)
+    {
+      int fd = open (argv[cnt], O_RDONLY);
+
+      Elf *elf = elf_begin (fd, ELF_C_READ, NULL);
+      if (elf == NULL)
+	{
+	  printf ("%s not usable %s\n", argv[cnt], elf_errmsg (-1));
+	  result = 1;
+	  close (fd);
+	  continue;
+	}
+
+      /* To get the section names.  */
+      size_t strndx;
+      elf_getshdrstrndx (elf, &strndx);
+
+      Elf_Scn *scn = NULL;
+      while ((scn = elf_nextscn (elf, scn)) != NULL)
+	{
+	  size_t idx = elf_ndxscn (scn);
+	  GElf_Shdr mem;
+	  GElf_Shdr *shdr = gelf_getshdr (scn, &mem);
+	  const char *name = elf_strptr (elf, strndx, shdr->sh_name);
+	  if ((shdr->sh_flags & SHF_COMPRESSED) != 0)
+	    {
+	      /* Real compressed section.  */
+	      if (elf_compress (scn, 0) != 0)
+		{
+		  printf ("elf_compress failed for section %zd: %s\n",
+			  idx, elf_errmsg (-1));
+		  return -1;
+		}
+	      Elf_Data *d = elf_getdata (scn, NULL);
+	      printf ("%zd: %s, ELF compressed, size: %zx\n",
+		      idx, name, d->d_size);
+	    }
+	  else
+	    {
+	      /* Maybe an old GNU compressed .z section?  */
+	      if (name[0] == '.' && name[1] == 'z')
+		{
+		  if (elf_compress_gnu (scn, 0) != 0)
+		    {
+		      printf ("elf_compress_gnu failed for section %zd: %s\n",
+			      idx, elf_errmsg (-1));
+		      return -1;
+		    }
+		  Elf_Data *d = elf_getdata (scn, NULL);
+		  printf ("%zd: %s, GNU compressed, size: %zx\n",
+			  idx, name, d->d_size);
+		}
+	      else
+		printf ("%zd: %s, NOT compressed\n", idx, name);
+	    }
+	}
+
+      elf_end (elf);
+      close (fd);
+    }
+
+  return result;
+}