--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/osdep/unix/log_sv4.c	Mon Sep 14 15:17:45 2009 +0900
@@ -0,0 +1,43 @@
+/* ========================================================================
+ * Copyright 1988-2006 University of Washington
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * 
+ * ========================================================================
+ */
+
+/*
+ * Program:	SVR4 login
+ *
+ * Author:	Mark Crispin
+ *		Networks and Distributed Computing
+ *		Computing & Communications
+ *		University of Washington
+ *		Administration Building, AG-44
+ *		Seattle, WA  98195
+ *		Internet: MRC@CAC.Washington.EDU
+ *
+ * Date:	1 August 1988
+ * Last Edited:	30 August 2006
+ */
+
+/* Log in
+ * Accepts: login passwd struct
+ *	    argument count
+ *	    argument vector
+ * Returns: T if success, NIL otherwise
+ */
+
+long loginpw (struct passwd *pw,int argc,char *argv[])
+{
+  uid_t uid = pw->pw_uid;
+  char *name = cpystr (pw->pw_name);
+  long ret = !(setgid (pw->pw_gid) || initgroups (name) || setuid (uid));
+  fs_give ((void **) &name);
+  return ret;
+}