Subject: Re: lib/34218: settimeofday(2) causes date(1) command to han
To: None <gnats-bugs@NetBSD.org, lib-bug-people@NetBSD.org,>
From: John Nemeth <jnemeth@victoria.tc.ca>
List: netbsd-bugs
Date: 08/16/2006 14:56:52 
     Can you try the following patch to lib/libc/settimeofday.c, please?

--- settimeofday.c.orig 2006-08-16 14:35:19.000000000 -0700
+++ settimeofday.c      2006-08-16 14:40:54.000000000 -0700
@@ -84,9 +84,12 @@ try_syscall:
                 * If credentials changed from root to an unprivilegied
                 * user, and we already had __clockctl_fd = -1, then we
                 * tried the system call as a non root user, it failed
-                * with EPERM, and we will try clockctl.
+                * with EPERM, and we will try clockctl unless the user
+                * is root which means they probably tried to set the
+                * clock backwards and are not allowed to do so because
+                * of the securelevel.
                 */
-               if (rv != -1 || errno != EPERM)
+               if (rv != -1 || errno != EPERM || geteuid() == 0)
                        return rv;
                __clockctl_fd = -2;
        }