1 files changed, 66 insertions, 0 deletions
diff --git a/cpukit/posix/src/setcancelstate.c b/cpukit/posix/src/setcancelstate.c
new file mode 100644
index 0000000000..7b7543b639
--- /dev/null
+++ b/cpukit/posix/src/setcancelstate.c
@@ -0,0 +1,66 @@
+/*
+ *  COPYRIGHT (c) 1989-2009.
+ *  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 <pthread.h>
+#include <errno.h>
+
+#include <rtems/system.h>
+#include <rtems/score/chain.h>
+#include <rtems/score/isr.h>
+#include <rtems/score/thread.h>
+#include <rtems/posix/cancel.h>
+#include <rtems/posix/pthread.h>
+#include <rtems/posix/threadsup.h>
+
+/*
+ *  18.2.2 Setting Cancelability State, P1003.1c/Draft 10, p. 183
+ */
+
+int pthread_setcancelstate(
+  int  state,
+  int *oldstate
+)
+{
+  POSIX_API_Control *thread_support;
+
+  /*
+   *  Don't even think about deleting a resource from an ISR.
+   *  Besides this request is supposed to be for _Thread_Executing
+   *  and the ISR context is not a thread.
+   */
+
+  if ( _ISR_Is_in_progress() )
+    return EPROTO;
+
+  if ( !oldstate )
+    return EINVAL;
+
+  if ( state != PTHREAD_CANCEL_ENABLE && state != PTHREAD_CANCEL_DISABLE )
+    return EINVAL;
+
+  thread_support = _Thread_Executing->API_Extensions[ THREAD_API_POSIX ];
+
+  _Thread_Disable_dispatch();
+    *oldstate = thread_support->cancelability_state;
+    thread_support->cancelability_state = state;
+
+    _POSIX_Thread_Evaluate_cancellation_and_enable_dispatch(_Thread_Executing);
+
+  /*
+   *  _Thread_Enable_dispatch is invoked by above call.
+   */
+
+  return 0;
+}