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.

1 files changed, 14 insertions, 0 deletions

diff --git a/testsuites/psxtests/psxsignal03/init.c b/testsuites/psxtests/psxsignal03/init.c
index b51ff36313..fcf7192664 100644
--- a/testsuites/psxtests/psxsignal03/init.c
+++ b/testsuites/psxtests/psxsignal03/init.c
@@ -64,6 +64,18 @@ const char *signal_name(int signo);
 volatile bool      Signal_occurred;
 volatile pthread_t Signal_thread;
 
+static void block_all_signals(void)
+{
+  int               sc;
+  sigset_t          mask;
+
+  sc = sigfillset( &mask );
+  rtems_test_assert( !sc );
+
+  sc = pthread_sigmask( SIG_BLOCK, &mask, NULL );
+  rtems_test_assert( !sc );
+}
+
 void Signal_handler(
   int        signo,
   siginfo_t *info,
@@ -166,6 +178,8 @@ void *POSIX_Init(
   TEST_BEGIN();
   puts( "Init - Variation is: " TEST_STRING );
 
+  block_all_signals();
+
   Signal_occurred = false;
 
   act.sa_handler = NULL;