1 files changed, 109 insertions, 0 deletions
diff --git a/util/grub-mkrelpath.c b/util/grub-mkrelpath.c
new file mode 100644
index 0000000..3fe3fe6
--- /dev/null
+++ b/util/grub-mkrelpath.c
@@ -0,0 +1,109 @@
+/* grub-mkrelpath.c - make a system path relative to its root */
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2009,2010 Free Software Foundation, Inc.
+ *
+ *  GRUB 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.
+ *
+ *  GRUB 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 GRUB.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <grub/util/misc.h>
+#include <grub/emu/misc.h>
+#include <grub/i18n.h>
+#include <getopt.h>
+
+#include "progname.h"
+
+static struct option options[] =
+  {
+    {"help", no_argument, 0, 'h'},
+    {"version", no_argument, 0, 'V'},
+    {0, 0, 0, 0},
+  };
+
+static void
+usage (int status)
+{
+  if (status)
+    fprintf (stderr, "Try `%s --help' for more information.\n", program_name);
+  else
+    printf ("\
+Usage: %s [OPTIONS] PATH\n\
+\n\
+Make a system path relative to its root.\n\
+\n\
+Options:\n\
+  -h, --help                display this message and exit\n\
+  -V, --version             print version information and exit\n\
+\n\
+Report bugs to <%s>.\n", program_name, PACKAGE_BUGREPORT);
+
+  exit (status);
+}
+
+int
+main (int argc, char *argv[])
+{
+  char *argument, *relpath;
+
+  set_program_name (argv[0]);
+
+  grub_util_init_nls ();
+
+  /* Check for options.  */
+  while (1)
+    {
+      int c = getopt_long (argc, argv, "hV", options, 0);
+
+      if (c == -1)
+	break;
+      else
+	switch (c)
+	  {
+	  case 'h':
+	    usage (0);
+	    break;
+
+	  case 'V':
+	    printf ("%s (%s) %s\n", program_name, PACKAGE_NAME, PACKAGE_VERSION);
+	    return 0;
+
+	  default:
+	    usage (1);
+	    break;
+	  }
+    }
+
+  if (optind >= argc)
+    {
+      fprintf (stderr, "No path is specified.\n");
+      usage (1);
+    }
+
+  if (optind + 1 != argc)
+    {
+      fprintf (stderr, "Unknown extra argument `%s'.\n", argv[optind + 1]);
+      usage (1);
+    }
+
+  argument = argv[optind];
+
+  relpath = grub_make_system_path_relative_to_its_root (argument);
+  printf ("%s\n", relpath);
+  free (relpath);
+
+  return 0;
+}