Split psignal.c into many more files. This reduced the amount of

object code that has to be loaded just for initializing the signal
manager.

1 files changed, 85 insertions, 0 deletions

diff --git a/cpukit/posix/src/sigaction.c b/cpukit/posix/src/sigaction.c
new file mode 100644
index 0000000000..a2d709e8e7
--- /dev/null
+++ b/cpukit/posix/src/sigaction.c
@@ -0,0 +1,85 @@
+/*
+ *  3.3.4 Examine and Change Signal Action, P1003.1b-1993, p. 70
+ *
+ *  COPYRIGHT (c) 1989-1998.
+ *  On-Line Applications Research Corporation (OAR).
+ *  Copyright assigned to U.S. Government, 1994.
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.OARcorp.com/rtems/license.html.
+ *
+ *  $Id$
+ */
+
+
+#include <pthread.h>
+#include <errno.h>
+
+#include <rtems/system.h>
+#include <rtems/posix/pthread.h>
+#include <rtems/posix/psignal.h>
+#include <rtems/posix/seterr.h>
+#include <rtems/score/isr.h>
+
+int sigaction(
+  int                     sig,
+  const struct sigaction *act,
+  struct sigaction       *oact
+)
+{
+  ISR_Level     level;
+
+  if ( oact )
+    *oact = _POSIX_signals_Vectors[ sig ];
+
+  if ( !sig )
+    return 0;
+
+  if ( !is_valid_signo(sig) )
+    set_errno_and_return_minus_one( EINVAL );
+  
+  /* 
+   *  Some signals cannot be ignored (P1003.1b-1993, pp. 70-72 and references.
+   *
+   *  NOTE: Solaris documentation claims to "silently enforce" this which
+   *        contradicts the POSIX specification.
+   */
+
+  if ( sig == SIGKILL )
+    set_errno_and_return_minus_one( EINVAL );
+  
+  /*
+   *  Evaluate the new action structure and set the global signal vector
+   *  appropriately.
+   */
+
+  if ( act ) {
+
+    /*
+     *  Unless the user is installing the default signal actions, then
+     *  we can just copy the provided sigaction structure into the vectors.
+     */
+
+    _ISR_Disable( level );
+      if ( act->sa_handler == SIG_DFL ) {
+        _POSIX_signals_Vectors[ sig ] = _POSIX_signals_Default_vectors[ sig ];
+      } else {
+         _POSIX_signals_Clear_process_signals( signo_to_mask(sig) );
+         _POSIX_signals_Vectors[ sig ] = *act;
+      }
+    _ISR_Enable( level );
+  }
+
+  /*
+   *  No need to evaluate or dispatch because:
+   *
+   *    + If we were ignoring the signal before, none could be pending 
+   *      now (signals not posted when SIG_IGN).
+   *    + If we are now ignoring a signal that was previously pending,
+   *      we clear the pending signal indicator.
+   */
+
+  return 0;
+}
+