1 files changed, 54 insertions, 0 deletions
diff --git a/sysdeps/generic/dl-origin.c b/sysdeps/generic/dl-origin.c
new file mode 100644
index 0000000000..b10fee2d57
--- /dev/null
+++ b/sysdeps/generic/dl-origin.c
@@ -0,0 +1,54 @@
+/* Find path of executable.
+   Copyright (C) 1998, 1999 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <stdlib.h>
+#include <string.h>
+#include <sys/param.h>
+#include <elf/ldsodefs.h>
+
+#include <dl-dst.h>
+
+/* Generally it is not possible to implement this.  We have to fall
+   back on a solution where the user provides the information.  */
+extern const char *_dl_origin_path;
+
+const char *
+_dl_get_origin (void)
+{
+  char *result = (char *) -1;
+  /* We use the environment variable LD_ORIGIN_PATH.  If it is set make
+     a copy and strip out trailing slashes.  */
+  if (_dl_origin_path != NULL)
+    {
+      size_t len = strlen (_dl_origin_path);
+      result = malloc (len + 1);
+      if (result == NULL)
+	result = (char *) -1;
+      else
+	{
+	  char *cp = __mempcpy (result, _dl_origin_path, len);
+	  while (cp > result + 1 && cp[-1] == '/')
+	    --cp;
+	  *cp = '\0';
+	}
+    }
+
+  return result;
+}