From 89f3c966e75b483eaeb4af2a85721f9b1d8ed4e2 Mon Sep 17 00:00:00 2001
From: patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3>
Date: Mon, 7 Jan 2013 21:41:20 +0000
Subject: Add ostest vfork test (does not work yet)

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5488 42af7a65-404d-4744-a932-0658087f49c3
---
 apps/examples/ostest/vfork.c | 99 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 99 insertions(+)
 create mode 100644 apps/examples/ostest/vfork.c

(limited to 'apps/examples/ostest/vfork.c')

diff --git a/apps/examples/ostest/vfork.c b/apps/examples/ostest/vfork.c
new file mode 100644
index 000000000..6c83047e3
--- /dev/null
+++ b/apps/examples/ostest/vfork.c
@@ -0,0 +1,99 @@
+/****************************************************************************
+ * examples/ostest/vfork.c
+ *
+ *   Copyright (C) 2013 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 <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <errno.h>
+
+#include "ostest.h"
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+#if defined(CONFIG_ARCH_HAVE_VFORK) && !defined(CONFIG_DISABLE_SIGNALS)
+static volatile bool g_vforkchild;
+#endif
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+int vfork_test(void)
+{
+#if defined(CONFIG_ARCH_HAVE_VFORK) && !defined(CONFIG_DISABLE_SIGNALS)
+  pid_t pid;
+
+  g_vforkchild = false;
+  pid = vfork();
+  if (pid == 0)
+    {
+      /* There is not very much that the child is permitted to do.  Perhaps
+       * it can just set g_vforkchild.
+       */
+
+      g_vforkchild = true;
+      exit(0);
+    }
+  else if (pid < 0)
+    {
+      printf("vfork_test: vfork() failed: %d\n", errno);
+      return -1;
+    }
+  else
+    {
+      sleep(1);
+      if (g_vforkchild)
+        {
+          printf("vfork_test: Child %d ran successfully\n", pid);
+        }
+      else
+        {
+          printf("vfork_test: ERROR Child %d did not run\n", pid);
+          return -1;
+        }
+    }
+#endif
+
+  return 0;
+}
-- 
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