Test messing with "." both when having . unveiled for an operation, and

with . veiled without the right flags for an operation, since these
come out of namei differently and . is the bane of the special
LOCKPARENT corner cases - this tests a panic found by anton@

diff --git a/regress/sys/kern/unveil/syscalls.c b/regress/sys/kern/unveil/syscalls.c
index 91c1158..6d8242a 100644 (file)
--- a/regress/sys/kern/unveil/syscalls.c
+++ b/regress/sys/kern/unveil/syscalls.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: syscalls.c,v 1.14 2018/07/29 22:30:32 beck Exp $      */
+/*     $OpenBSD: syscalls.c,v 1.15 2018/08/02 04:39:58 beck Exp $      */
 
 /*
  * Copyright (c) 2017-2018 Bob Beck <beck@openbsd.org>
@@ -755,9 +755,16 @@ test_dot(int do_uv)
 {
        extern char **environ;
        if (do_uv) {
-               printf("testing unveil(\".\")\n");
+               printf("testing dot(\".\")\n");
                if (unveil(".", "rwxc") == -1)
                        err(1, "%s:%d - unveil", __FILE__, __LINE__);
+               if ((unlink(".") == -1) && errno != EPERM)
+                       err(1, "%s:%d - unlink", __FILE__, __LINE__);
+               printf("testing dot flags(\".\")\n");
+               if (unveil(".", "r") == -1)
+                       err(1, "%s:%d - unveil", __FILE__, __LINE__);
+               if ((unlink(".") == -1) && errno != EACCES)
+                       warn("%s:%d - unlink", __FILE__, __LINE__);
        }
        return 0;
 }