From 97c46584575c23fb060b72f3a32c31e216886756 Mon Sep 17 00:00:00 2001
From: Ted Unangst <tedu@cvs.openbsd.org>
Date: Thu, 16 Jul 2020 17:47:10 +0000
Subject: allow setenv LIBC_NOUSERTC to disable userland timekeeping, for
 ktrace. ok deraadt pirofti

---
 lib/libc/dlfcn/init.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/libc/dlfcn/init.c b/lib/libc/dlfcn/init.c
index 3df61076dff..c8e0542995c 100644
--- a/lib/libc/dlfcn/init.c
+++ b/lib/libc/dlfcn/init.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: init.c,v 1.8 2020/07/06 13:33:05 pirofti Exp $ */
+/*	$OpenBSD: init.c,v 1.9 2020/07/16 17:47:09 tedu Exp $ */
 /*
  * Copyright (c) 2014,2015 Philip Guenther <guenther@openbsd.org>
  *
@@ -114,6 +114,8 @@ _libc_preinit(int argc, char **argv, char **envp, dl_cb_cb *cb)
 				    _timekeep->tk_version != TK_VERSION)
 					_timekeep = NULL;
 			}
+			if (issetugid() == 0 && getenv("LIBC_NOUSERTC"))
+				_timekeep = NULL;
 			break;
 		}
 	}
-- 
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