[src/trunk]: src/tests/kernel Mark ptraceme4 as expected failure, assume that...

[kamil <kamil%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/a2585a66f986
branches:  trunk
changeset: 348712:a2585a66f986
user:      kamil <kamil%NetBSD.org@localhost>
date:      Thu Nov 03 18:25:54 2016 +0000

description:
Mark ptraceme4 as expected failure, assume that Linux&FreeBSD are correct

Raising SIGCONT from a ptrace(2)d child should be catched with waidpid(2)
as WIFCONTINUED() false and WIFSTOPPED() true; not both true as it does not
make much sense.

PR kern/51596

Change requested by <kre>
Checked by <christos>

Sponsored by <The NetBSD Foundation>

diffstat:

 tests/kernel/t_ptrace.c |  17 ++++++++++-------
 1 files changed, 10 insertions(+), 7 deletions(-)

diffs (45 lines):

diff -r 4222cc3c96db -r a2585a66f986 tests/kernel/t_ptrace.c
--- a/tests/kernel/t_ptrace.c   Thu Nov 03 11:32:15 2016 +0000
+++ b/tests/kernel/t_ptrace.c   Thu Nov 03 18:25:54 2016 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: t_ptrace.c,v 1.4 2016/11/03 11:20:45 kamil Exp $       */
+/*     $NetBSD: t_ptrace.c,v 1.5 2016/11/03 18:25:54 kamil Exp $       */
 
 /*-
  * Copyright (c) 2016 The NetBSD Foundation, Inc.
@@ -27,7 +27,7 @@
  */
 
 #include <sys/cdefs.h>
-__RCSID("$NetBSD: t_ptrace.c,v 1.4 2016/11/03 11:20:45 kamil Exp $");
+__RCSID("$NetBSD: t_ptrace.c,v 1.5 2016/11/03 18:25:54 kamil Exp $");
 
 #include <sys/param.h>
 #include <sys/types.h>
@@ -395,6 +395,12 @@
        const int sigval = SIGSTOP, sigsent = SIGCONT;
        pid_t child, wpid;
 
+       /* XXX: Linux&FreeBSD and NetBSD have different behavior here.
+        * Assume that they are right and NetBSD is wrong.
+        * The ptrace(2) interface is out of POSIX scope so there is no
+        * ultimate standard to verify it. */
+       atf_tc_expect_fail("PR kern/51596");
+
        printf("1: Before forking process PID=%d\n", getpid());
        ATF_REQUIRE((child = fork()) != -1);
        if (child == 0) {
@@ -459,11 +465,8 @@
                printf("1: Ensuring that the child has not been exited\n");
                ATF_REQUIRE(!WIFEXITED(status));
 
-               /* XXX: Linux and NetBSD behavior differ here, is it a bug or
-                * a valid result? ptrace(2) is out of POSIX scope so there is
-                * no standard to verify it. */
-               printf("1: Ensuring that the child has been continued\n");
-               ATF_REQUIRE(WIFCONTINUED(status));
+               printf("1: Ensuring that the child has not been continued\n");
+               ATF_REQUIRE(!WIFCONTINUED(status));
 
                printf("1: Ensuring that the child has not been terminated "
                    "with a signal\n");