From d8a7e180245bc00dbf55fa3e40135a4a94117ab9 Mon Sep 17 00:00:00 2001
From: Ralf Corsepius <ralf.corsepius@rtems.org>
Date: Mon, 16 Aug 2010 05:46:09 +0000
Subject: 2010-08-16	Alin Rus <alin.codejunkie@gmail.com>

	* posix/src/aio_misc.c: New.
	* posix/src/aio_error.c, posix/src/aio_read.c,
	* posix/src/aio_return.c, posix/src/aio_write.c:
	New implementation.
---
 cpukit/posix/src/aio_read.c | 64 +++++++++++++++++++++++++++++++++++----------
 1 file changed, 50 insertions(+), 14 deletions(-)

(limited to 'cpukit/posix/src/aio_read.c')

diff --git a/cpukit/posix/src/aio_read.c b/cpukit/posix/src/aio_read.c
index 0b4551e549..4c1133c9f0 100644
--- a/cpukit/posix/src/aio_read.c
+++ b/cpukit/posix/src/aio_read.c
@@ -1,29 +1,65 @@
 /*
- *  6.7.2 Asynchronous Read, P1003.1b-1993, p. 154
+ * Copyright 2010, Alin Rus <alin.codejunkie@gmail.com> 
+ * 
+ * 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.
  *
- *  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.
- *
- *  $Id$
+ * $Id$
  */
 
+
 #if HAVE_CONFIG_H
 #include "config.h"
 #endif
 
 #include <aio.h>
 #include <errno.h>
-
+#include <fcntl.h>
+#include <rtems/posix/aio_misc.h>
 #include <rtems/system.h>
 #include <rtems/seterr.h>
+#include <stdlib.h>
 
-int aio_read(
-  struct aiocb  *aiocbp __attribute__((unused))
-)
+/*
+ *  aio_read
+ *
+ * Asynchronous write to a file
+ *
+ *  Input parameters:
+ *        aiocbp - asynchronous I/O control block
+ *
+ *  Output parameters:
+ *        -1 - request could not pe enqueued
+ *           - FD not opened for write
+ *           - invalid aio_reqprio or aio_offset or
+ *             aio_nbytes
+ *           - not enough memory
+ *         0 - otherwise
+ */
+
+int
+aio_read (struct aiocb *aiocbp)
 {
-  rtems_set_errno_and_return_minus_one( ENOSYS );
+  rtems_aio_request *req;
+  int mode;
+
+  mode = fcntl (aiocbp->aio_fildes, F_GETFL);
+  if (!(((mode & O_ACCMODE) == O_RDONLY) || ((mode & O_ACCMODE) == O_RDWR)))
+    rtems_aio_set_errno_return_minus_one (EBADF, aiocbp);
+
+  if (aiocbp->aio_reqprio < 0 || aiocbp->aio_reqprio > AIO_PRIO_DELTA_MAX)
+    rtems_aio_set_errno_return_minus_one (EINVAL, aiocbp);
+  
+  if (aiocbp->aio_offset < 0 || aiocbp->aio_nbytes < 0)
+    rtems_aio_set_errno_return_minus_one (EINVAL, aiocbp);
+
+  req = malloc (sizeof (rtems_aio_request));
+  if (req == NULL)
+    rtems_aio_set_errno_return_minus_one (EAGAIN, aiocbp);
+
+  req->aiocbp = aiocbp;
+  req->aiocbp->aio_lio_opcode = LIO_READ;
+
+  return rtems_aio_enqueue (req);
 }
-- 
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