Correct initial POSIX signals mask

	+ Modify POSIX thread create extension to ensure expected
	  initial signal mask is provided to system threads, initial
	  tasks and threads, and inheritied by tasks and threads.
	+ Adds psxsignal07 to verify functionality when using a POSIX
	  Initialization thread and POSIX threads.
	+ Adds psxsignal08 to verify functionality when using a Classic API
	  Initialization task and Classic API tasks.

Closes #3794.

4 files changed, 210 insertions, 0 deletions

diff --git a/testsuites/psxtests/psxsignal07/main.c b/testsuites/psxtests/psxsignal07/main.c
new file mode 100644
index 0000000000..52b21751c8
--- /dev/null
+++ b/testsuites/psxtests/psxsignal07/main.c
@@ -0,0 +1,136 @@
+/*
+ * @brief psxsignal07 - Ensure initial signal mask and thread inheritance
+ */
+
+/*
+ * COPYRIGHT (c) 2019.
+ * On-Line Applications Research Corporation (OAR).
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <tmacros.h>
+#include "test_support.h"
+#include <errno.h>
+#include <pthread.h>
+#include <signal.h>
+
+const char rtems_test_name[] = "PSXSIGNAL 7";
+
+static sigset_t main_sigmask;
+
+#define SIGSET_NBYTES (sizeof(sigset_t))
+
+/* #define DEBUG_TEST */
+
+static void fetch_sigmask(const char *name, sigset_t *sigset_p)
+{
+  int   rc;
+
+  rc = sigemptyset(sigset_p);
+  rtems_test_assert(rc == 0);
+
+  rc = sigprocmask(SIG_SETMASK, NULL, sigset_p);
+  rtems_test_assert(rc == 0);
+
+#ifdef DEBUG_TEST
+  /*
+   * There is no assurance that sigset_t is a primitive type so
+   * we have to print it a long at a time.
+   */
+  int            i;
+  unsigned char *p = (unsigned char *) sigset_p;
+
+  printf("%s signal mask (in hex):\n    ", name);
+  for (i=0 ; i < SIGSET_NBYTES ; i++) {
+    printf("%02x%s", *p++, (i % 16 == 15) ? "\n    " : " ");
+  }
+  printf("\n");
+#endif
+}
+
+static void block_sigmask(int signo, sigset_t *sigset_p)
+{
+  sigset_t sigset;
+  int      rc;
+
+  /*
+   * Block the requested signal
+   */
+  rc = sigemptyset(&sigset);
+  rtems_test_assert(rc == 0);
+  rc = sigaddset(&sigset, signo);
+  rtems_test_assert(rc == 0);
+
+  rc = sigprocmask(SIG_BLOCK, &sigset, NULL);
+  rtems_test_assert(rc == 0);
+
+  /*
+   * Fetch the current signal mask reflecting the requested update
+   */
+  sigemptyset(sigset_p);
+  rc = sigprocmask(SIG_SETMASK, NULL, sigset_p);
+  rtems_test_assert(rc == 0);
+}
+
+static void *thread_body(void *arg)
+{
+  sigset_t    mask;
+
+  /*
+   * There is no assurance that sigset_t is a primitive type so
+   * we have to use memcmp().
+   */
+  fetch_sigmask("main", &main_sigmask);
+  fetch_sigmask(arg, &mask);
+  rtems_test_assert(main_sigmask == mask);
+  
+  return NULL;
+}
+
+int main(int argc, char **argv)
+{
+  int        rc;
+  pthread_t  id;
+  sigset_t   empty;
+
+  TEST_BEGIN();
+
+  /*
+   * Verify first thread has empty signal mask
+   */
+  fetch_sigmask("main", &main_sigmask);
+
+  sigemptyset(&empty);
+  fetch_sigmask("empty", &empty);
+
+  puts("Ensure main thread's mask equals sigemptyset");
+  rtems_test_assert(main_sigmask == empty);
+
+  /*
+   * Verify first thread has empty signal mask
+   */
+  puts("Ensure parent's empty mask is inherited by thread");
+  rc = pthread_create(&id, NULL, thread_body, "thread1");
+  rtems_test_assert(rc == 0);
+  sleep(1);
+
+  /*
+   * Create a thread and see if it inherits non-empty signal mask.
+   */
+  puts("Ensure parent's mask with SIGUSR1 mask is inherited by thread");
+  block_sigmask(SIGUSR1, &main_sigmask);
+  rc = pthread_create(&id, NULL, thread_body, "thread2");
+  rtems_test_assert(rc == 0);
+  sleep(1);
+  
+  TEST_END();
+
+  rtems_test_exit(0);
+  return 0;
+}
+
diff --git a/testsuites/psxtests/psxsignal07/psxsignal07.doc b/testsuites/psxtests/psxsignal07/psxsignal07.doc
new file mode 100644
index 0000000000..78425471f7
--- /dev/null
+++ b/testsuites/psxtests/psxsignal07/psxsignal07.doc
@@ -0,0 +1,23 @@
+#  COPYRIGHT (c) 2019.
+#  On-Line Applications Research Corporation (OAR).
+#
+#  SPDX-License-Identifier: BSD-2-Clause
+#
+
+This file describes the directives and concepts tested by this test set.
+
+test set name:  psxsignal07
+
+directives:
+
+  sigprocmask
+  sigemptyset
+  sigaddset
+
+concepts:
+
++ Ensure that the initial signal mask is empty (all unmasked).
+
++ Ensure that a POSIX thread inherits an empty signal mask.
+
++ Ensure that a POSIX thread inherits an non-empty signal mask.
diff --git a/testsuites/psxtests/psxsignal07/psxsignal07.scn b/testsuites/psxtests/psxsignal07/psxsignal07.scn
new file mode 100644
index 0000000000..ad7a12deda
--- /dev/null
+++ b/testsuites/psxtests/psxsignal07/psxsignal07.scn
@@ -0,0 +1,7 @@
+*** BEGIN OF TEST PSXSIGNAL 7 ***
+Ensure main thread's mask equals sigemptyset
+Ensure parent's empty mask is inherited by thread
+Ensure parent's mask with SIGUSR1 mask is inherited by thread
+
+*** END OF TEST PSXSIGNAL 7 ***
+
diff --git a/testsuites/psxtests/psxsignal07/rtems_config.c b/testsuites/psxtests/psxsignal07/rtems_config.c
new file mode 100644
index 0000000000..e3f3349640
--- /dev/null
+++ b/testsuites/psxtests/psxsignal07/rtems_config.c
@@ -0,0 +1,44 @@
+/*
+ * COPYRIGHT (c) 2019.
+ * On-Line Applications Research Corporation (OAR).
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <stdlib.h>
+
+int main(int argc, char **argv);
+
+static char *argv_list[] = {
+  "psxsignal07",
+  ""
+};
+static void *POSIX_Init(void *arg)
+{
+  (void) arg;  /* deliberately ignored */
+
+  /*
+   * Initialize optional services
+   */
+
+  /*
+   * Could get arguments from command line or have a static set.
+   */
+  (void) main(1, argv_list);
+
+  return NULL;
+}
+
+#include <bsp.h> /* for device driver prototypes */
+
+/* NOTICE: the clock driver is explicitly disabled */
+#define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER
+#define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER
+
+#define CONFIGURE_POSIX_INIT_THREAD_TABLE
+
+#define CONFIGURE_UNLIMITED_OBJECTS
+#define CONFIGURE_UNIFIED_WORK_AREAS
+
+#define CONFIGURE_INIT
+#include <rtems/confdefs.h>