Make sure unveil remains locked over fork even in the case where the

parent just called unveil(NULL, NULL) and nothing else.
With and OK beck@

diff --git a/sys/kern/kern_unveil.c b/sys/kern/kern_unveil.c
index 51610c4..58afa40 100644 (file)
--- a/sys/kern/kern_unveil.c
+++ b/sys/kern/kern_unveil.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: kern_unveil.c,v 1.48 2021/07/16 07:59:38 claudio Exp $        */
+/*     $OpenBSD: kern_unveil.c,v 1.49 2021/08/30 09:05:44 claudio Exp $        */
 
 /*
  * Copyright (c) 2017-2019 Bob Beck <beck@openbsd.org>
@@ -205,6 +205,7 @@ unveil_copy(struct process *parent, struct process *child)
 {
        size_t i;
 
+       child->ps_uvdone = parent->ps_uvdone;
        if (parent->ps_uvvcount == 0)
                return;
 
@@ -236,7 +237,6 @@ unveil_copy(struct process *parent, struct process *child)
                to->uv_cover = from->uv_cover;
        }
        child->ps_uvvcount = parent->ps_uvvcount;
-       child->ps_uvdone = parent->ps_uvdone;
 }
 
 /*