[src/trunk]: src/tests/lib/libc/sys Skip the mincore_shmseg test case if the ...

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

details:   https://anonhg.NetBSD.org/src/rev/50d49eae43f7
branches:  trunk
changeset: 356689:50d49eae43f7
user:      kre <kre%NetBSD.org@localhost>
date:      Sun Oct 08 08:29:57 2017 +0000

description:
Skip the mincore_shmseg test case if the SYSVSHM option is not configured
in the kernel.

diffstat:

 tests/lib/libc/sys/t_mincore.c |  35 +++++++++++++++++++++++++++++++++--
 1 files changed, 33 insertions(+), 2 deletions(-)

diffs (70 lines):

diff -r a2bf792b97f5 -r 50d49eae43f7 tests/lib/libc/sys/t_mincore.c
--- a/tests/lib/libc/sys/t_mincore.c    Sun Oct 08 08:26:01 2017 +0000
+++ b/tests/lib/libc/sys/t_mincore.c    Sun Oct 08 08:29:57 2017 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: t_mincore.c,v 1.13 2017/09/01 16:51:58 kre Exp $ */
+/* $NetBSD: t_mincore.c,v 1.14 2017/10/08 08:29:57 kre Exp $ */
 
 /*-
  * Copyright (c) 2011 The NetBSD Foundation, Inc.
@@ -59,7 +59,7 @@
  * POSSIBILITY OF SUCH DAMAGE.
  */
 #include <sys/cdefs.h>
-__RCSID("$NetBSD: t_mincore.c,v 1.13 2017/09/01 16:51:58 kre Exp $");
+__RCSID("$NetBSD: t_mincore.c,v 1.14 2017/10/08 08:29:57 kre Exp $");
 
 #include <sys/mman.h>
 #include <sys/stat.h>
@@ -69,6 +69,7 @@
 #include <errno.h>
 #include <fcntl.h>
 #include <kvm.h>
+#include <signal.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -271,6 +272,33 @@
        (void)unlink(path);
 }
 
+static volatile int sig_caught;
+
+static void
+sigsys_handler(int signum)
+{
+
+       sig_caught = signum;
+}
+
+static int
+no_kernel_sysvmsg(void)
+{
+       int id;
+       void (*osig)(int);
+
+       sig_caught = 0;
+       osig = signal(SIGSYS, sigsys_handler);
+       id = shmget(IPC_PRIVATE, page, IPC_CREAT | S_IRUSR | S_IWUSR);
+       if (sig_caught || id == -1)
+               return 1;
+
+       (void)shmctl(id, IPC_RMID, 0);
+       (void)signal(SIGSYS, osig);
+
+       return 0;
+}
+
 ATF_TC(mincore_shmseg);
 ATF_TC_HEAD(mincore_shmseg, tc)
 {
@@ -283,6 +311,9 @@
        void *addr = NULL;
        int shmid;
 
+       if (no_kernel_sysvmsg())
+               atf_tc_skip("No SYSVSHM in kernel");
+
        shmid = shmget(IPC_PRIVATE, npgs * page,
            IPC_CREAT | S_IRUSR | S_IWUSR);