1 files changed, 56 insertions, 0 deletions
diff --git a/cpukit/include/rtems/posix/mmanimpl.h b/cpukit/include/rtems/posix/mmanimpl.h
new file mode 100644
index 0000000000..e1cc672331
--- /dev/null
+++ b/cpukit/include/rtems/posix/mmanimpl.h
@@ -0,0 +1,56 @@
+/**
+ * @file
+ *
+ * @brief Internal Support for POSIX 1003.1b 6.3.1 - map pages of memory
+ *
+ */
+
+/*
+ * Copyright (c) 2012 Chris Johns
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.org/license/LICENSE.
+ */
+
+#ifndef _RTEMS_POSIX_MMANIMPL_H
+#define _RTEMS_POSIX_MMANIMPL_H
+
+#include <rtems/libio_.h>
+#include <rtems/chain.h> /* FIXME: use score chains for proper layering? */
+#include <rtems/posix/shm.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* FIXME: add Doxygen */
+
+/**
+ * Every mmap'ed region has a mapping.
+ */
+typedef struct mmap_mappings_s {
+  rtems_chain_node   node;  /**< The mapping chain's node */
+  void*              addr;  /**< The address of the mapped memory */
+  size_t             len;   /**< The length of memory mapped */
+  int                flags; /**< The mapping flags */
+  POSIX_Shm_Control *shm;   /**< The shared memory object or NULL */
+} mmap_mapping;
+
+extern rtems_chain_control mmap_mappings;
+
+static inline void mmap_mappings_lock_obtain( void )
+{
+  rtems_libio_lock();
+}
+
+static inline void mmap_mappings_lock_release( void )
+{
+  rtems_libio_unlock();
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif