1 files changed, 82 insertions, 0 deletions
diff --git a/lib/libkse/thread/thr_sigaction.c b/lib/libkse/thread/thr_sigaction.c
new file mode 100644
index 0000000..c733667
--- /dev/null
+++ b/lib/libkse/thread/thr_sigaction.c
@@ -0,0 +1,82 @@
+/*
+ * Copyright (c) 1995 John Birrell <jb@cimlogic.com.au>.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by John Birrell.
+ * 4. Neither the name of the author nor the names of any co-contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ */
+#include <signal.h>
+#include <errno.h>
+#ifdef _THREAD_SAFE
+#include <pthread.h>
+#include "pthread_private.h"
+
+int
+sigaction(int sig, const struct sigaction * act, struct sigaction * oact)
+{
+	int             ret = 0;
+	int             status;
+
+	/* Check if the signal number is out of range: */
+	if (sig < 1 || sig > NSIG) {
+		/* Return an invalid argument: */
+		_thread_seterrno(_thread_run, EINVAL);
+		ret = -1;
+	} else {
+		/*
+		 * Check if the existing signal action structure contents are
+		 * to be returned: 
+		 */
+		if (oact != NULL) {
+			/* Return the existing signal action contents: */
+			oact->sa_handler = _thread_run->act[sig - 1].sa_handler;
+			oact->sa_mask = _thread_run->act[sig - 1].sa_mask;
+			oact->sa_flags = _thread_run->act[sig - 1].sa_flags;
+		}
+		/* Check if a signal action was supplied: */
+		if (act != NULL) {
+			/* Block signals while the signal handler is changed: */
+			_thread_kern_sig_block(&status);
+
+			/* Set the new signal handler: */
+			_thread_run->act[sig - 1].sa_handler = act->sa_handler;
+			_thread_run->act[sig - 1].sa_mask = act->sa_mask;
+			_thread_run->act[sig - 1].sa_flags = act->sa_flags;
+
+			/*
+			 * Unblock signals to allow the new signal handler to
+			 * take effect: 
+			 */
+			_thread_kern_sig_unblock(status);
+		}
+	}
+
+	/* Return the completion status: */
+	return (ret);
+}
+#endif