1 files changed, 78 insertions, 0 deletions
diff --git a/rt/tst-timer-sigmask.c b/rt/tst-timer-sigmask.c
new file mode 100644
index 0000000000..22e250f738
--- /dev/null
+++ b/rt/tst-timer-sigmask.c
@@ -0,0 +1,78 @@
+/* Check resulting signal mask from POSIX timer using SIGEV_THREAD.
+   Copyright (C) 2020 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <stdio.h>
+#include <time.h>
+#include <signal.h>
+#include <stdbool.h>
+
+#include <support/check.h>
+#include <support/test-driver.h>
+#include <support/xthread.h>
+
+#include <internal-signals.h>
+
+static pthread_barrier_t barrier;
+
+static void
+thread_handler (union sigval sv)
+{
+  sigset_t ss;
+  sigprocmask (SIG_BLOCK, NULL, &ss);
+  if (test_verbose > 0)
+    printf ("%s: blocked signal mask = { ", __func__);
+  for (int sig = 1; sig < NSIG; sig++)
+    {
+      /* POSIX timers threads created to handle SIGEV_THREAD block all
+	 signals except SIGKILL, SIGSTOP and glibc internals ones.  */
+      if (sigismember (&ss, sig))
+	{
+	  TEST_VERIFY (sig != SIGKILL && sig != SIGSTOP);
+	  TEST_VERIFY (!__is_internal_signal (sig));
+	}
+      if (test_verbose && sigismember (&ss, sig))
+	printf ("%d, ", sig);
+    }
+  if (test_verbose > 0)
+    printf ("}\n");
+
+  xpthread_barrier_wait (&barrier);
+}
+
+static int
+do_test (void)
+{
+  struct sigevent sev = { 0 };
+  sev.sigev_notify = SIGEV_THREAD;
+  sev.sigev_notify_function = &thread_handler;
+
+  timer_t timerid;
+  TEST_COMPARE (timer_create (CLOCK_REALTIME, &sev, &timerid), 0);
+
+  xpthread_barrier_init (&barrier, NULL, 2);
+
+  struct itimerspec trigger = { 0 };
+  trigger.it_value.tv_nsec = 1000000;
+  TEST_COMPARE (timer_settime (timerid, 0, &trigger, NULL), 0);
+
+  xpthread_barrier_wait (&barrier);
+
+  return 0;
+}
+
+#include <support/test-driver.c>