1 files changed, 99 insertions, 0 deletions
diff --git a/cpukit/posix/src/psignalclearsignals.c b/cpukit/posix/src/psignalclearsignals.c
new file mode 100644
index 0000000000..09942f3bb5
--- /dev/null
+++ b/cpukit/posix/src/psignalclearsignals.c
@@ -0,0 +1,99 @@
+/*
+ *  COPYRIGHT (c) 1989-2007.
+ *  On-Line Applications Research Corporation (OAR).
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.rtems.com/license/LICENSE.
+ *
+ *  $Id$
+ */
+
+#if HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <errno.h>
+#include <pthread.h>
+#include <signal.h>
+
+#include <rtems/system.h>
+#include <rtems/score/isr.h>
+#include <rtems/score/thread.h>
+#include <rtems/score/tqdata.h>
+#include <rtems/score/wkspace.h>
+#include <rtems/seterr.h>
+#include <rtems/posix/threadsup.h>
+#include <rtems/posix/psignal.h>
+#include <rtems/posix/pthread.h>
+#include <rtems/posix/time.h>
+#include <stdio.h>
+
+/*PAGE
+ *
+ *  _POSIX_signals_Clear_signals
+ */
+
+bool _POSIX_signals_Clear_signals(
+  POSIX_API_Control  *api,
+  int                 signo,
+  siginfo_t          *info,
+  bool                is_global,
+  bool                check_blocked
+)
+{
+  sigset_t                    mask;
+  sigset_t                    signals_blocked;
+  ISR_Level                   level;
+  bool                        do_callout;
+  POSIX_signals_Siginfo_node *psiginfo;
+
+  mask = signo_to_mask( signo );
+
+  do_callout = false;
+
+  /* set blocked signals based on if checking for them, SIGNAL_ALL_MASK
+   * insures that no signals are blocked and all are checked.
+   */
+
+  if ( check_blocked )
+    signals_blocked = ~api->signals_blocked;
+  else
+    signals_blocked = SIGNAL_ALL_MASK;
+
+  /* XXX is this right for siginfo type signals? */
+  /* XXX are we sure they can be cleared the same way? */
+
+  _ISR_Disable( level );
+    if ( is_global ) {
+       if ( mask & (_POSIX_signals_Pending & signals_blocked) ) {
+         if ( _POSIX_signals_Vectors[ signo ].sa_flags == SA_SIGINFO ) {
+           psiginfo = (POSIX_signals_Siginfo_node *)
+             _Chain_Get_unprotected( &_POSIX_signals_Siginfo[ signo ] );
+           _POSIX_signals_Clear_process_signals( signo );
+           /*
+            *  It may be impossible to get here with an empty chain
+            *  BUT until that is proven we need to be defensive and
+            *  protect against it.
+            */
+           if ( psiginfo ) {
+             *info = psiginfo->Info;
+             _Chain_Append_unprotected(
+               &_POSIX_signals_Inactive_siginfo,
+               &psiginfo->Node
+             );
+           } else
+             do_callout = false;
+         }
+         _POSIX_signals_Clear_process_signals( signo );
+         do_callout = true;
+       }
+    } else {
+      if ( mask & (api->signals_pending & signals_blocked) ) {
+        api->signals_pending &= ~mask;
+        do_callout = true;
+      }
+    }
+  _ISR_Enable( level );
+  return do_callout;
+}