1 files changed, 69 insertions, 0 deletions
diff --git a/sysdeps/generic/dl-environ.c b/sysdeps/generic/dl-environ.c
new file mode 100644
index 0000000000..433102757c
--- /dev/null
+++ b/sysdeps/generic/dl-environ.c
@@ -0,0 +1,69 @@
+/*Environment handling for dynamic loader.
+   Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   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 <string.h>
+
+
+extern char **_environ;
+
+/* Walk through the environment of the process and return all entries
+   starting with `LD_'.  */
+char *
+internal_function
+_dl_next_ld_env_entry (char ***position)
+{
+  char **current = *position;
+  char *result = NULL;
+
+  if (current == NULL)
+    /* We start over.  */
+    current = _environ;
+
+  while (result == NULL && *current != NULL)
+    {
+      if ((*current)[0] == 'L' && (*current)[1] == 'D' && (*current)[2] == '_')
+	result = *current;
+
+      ++current;
+    }
+
+  /* Save current position for next visit.  */
+  *position = current;
+
+  return result;
+}
+
+void
+unsetenv (const char *name)
+{
+  const size_t len = strlen (name);
+  char **ep;
+
+  for (ep = _environ; *ep != NULL; ++ep)
+    if (!strncmp (*ep, name, len) && (*ep)[len] == '=')
+      {
+	/* Found it.  Remove this pointer by moving later ones back.  */
+	char **dp = ep;
+
+	do
+	  dp[0] = dp[1];
+	while (*dp++);
+	/* Continue the loop in case NAME appears again.  */
+      }
+}