From c7c62d5b2c7cfd6597fecdddfb589ec4d72e19a4 Mon Sep 17 00:00:00 2001
From: Gregory Nutt <gnutt@nuttx.org>
Date: Sun, 5 Oct 2014 06:55:17 -0600
Subject: [PATCH] Move AIO signal logic to a common location in aio_signal.c. 
 Also fix several typos

---
 libc/aio/aio_signal.c | 124 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 124 insertions(+)
 create mode 100644 libc/aio/aio_signal.c

diff --git a/libc/aio/aio_signal.c b/libc/aio/aio_signal.c
new file mode 100644
index 0000000000..6029c71450
--- /dev/null
+++ b/libc/aio/aio_signal.c
@@ -0,0 +1,124 @@
+/****************************************************************************
+ * libc/aio/aio_signal.c
+ *
+ *   Copyright (C) 2014 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * 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. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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
+ * COPYRIGHT OWNER 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <signal.h>
+#include <aio.h>
+#include <assert.h>
+
+#include "aio/aio.h"
+
+#ifndef CONFIG_LIBC_AIO
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+/* Configuration ************************************************************/
+
+/****************************************************************************
+ * Private Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Variables
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Variables
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+/****************************************************************************
+ * Name: aio_signal
+ *
+ * Description:
+ *   Signal the client that an I/O has completed.
+ *
+ * Input Parameters:
+ *   aiocbp - Pointer to the asynchronous I/O state structure that includes
+ *            information about how to signal the client
+ *
+ * Returned Value:
+ *   Zero (OK) if the client was successfully signalled.  Otherwise, a
+ *   negated errno value is returned.
+ *
+ * Assumptions:
+ *   This function runs only in the context of the worker thread.
+ *
+ ****************************************************************************/
+
+int aio_signal(FAR struct aiocb *aiocbp)
+{
+  int ret;
+
+  DEBUGASSERT(aiocbp);
+ 
+  /* Signal the client */
+
+  if (aiocbp->aio_sigevent.sigev_notify == SIGEV_SIGNAL)
+    {
+#ifdef CONFIG_CAN_PASS_STRUCTS
+      ret = sigqueue(aiocbp->aio_pid, aiocbp->aio_sigevent.sigev_signo,
+                     aiocbp->aio_sigevent.sigev_value);
+#else
+      ret = sigqueue(aiocbp->aio_pid, aiocbp->aio_sigevent.sigev_sign,
+                     aiocbp->aio_sigevent.sigev_value.sival_ptr);
+#endif
+    }
+
+  /* Send the poll signal in any event in case the caller is waiting
+   * on sig_suspend();
+   */
+
+  else
+    {
+      ret = kill(aiocbp->aio_pid, SIGPOLL);
+    }
+
+  return ret;
+}
+
+#endif /* CONFIG_LIBC_AIO */