1 files changed, 92 insertions, 0 deletions
diff --git a/cpukit/libfs/src/rfs/rtems-rfs-buffer-bdbuf.c b/cpukit/libfs/src/rfs/rtems-rfs-buffer-bdbuf.c
new file mode 100644
index 0000000000..536b136ed6
--- /dev/null
+++ b/cpukit/libfs/src/rfs/rtems-rfs-buffer-bdbuf.c
@@ -0,0 +1,92 @@
+/*
+ *  COPYRIGHT (c) 2010 Chris Johns <chrisj@rtems.org>
+ *
+ *  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.
+ *
+ *  $Id$
+ */
+/**
+ * @file
+ *
+ * @ingroup rtems-rfs
+ *
+ * RTEMS File Systems Buffer Routines for the RTEMS libblock BD buffer cache.
+ *
+ */
+
+#if HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <inttypes.h>
+#include <errno.h>
+
+#include <rtems/rfs/rtems-rfs-buffer.h>
+#include <rtems/rfs/rtems-rfs-file-system.h>
+
+#if RTEMS_RFS_USE_LIBBLOCK
+
+/**
+ * Show errors.
+ */
+#define RTEMS_RFS_BUFFER_ERRORS 0
+
+int
+rtems_rfs_buffer_bdbuf_request (rtems_rfs_file_system*   fs,
+                                rtems_rfs_buffer_block   block,
+                                bool                     read,
+                                rtems_rfs_buffer**       buffer)
+{
+  rtems_status_code sc;
+  int               rc = 0;
+
+  if (read)
+    sc = rtems_bdbuf_read (rtems_rfs_fs_device (fs), block, buffer);
+  else
+    sc = rtems_bdbuf_get (rtems_rfs_fs_device (fs), block, buffer);
+
+  if (sc != RTEMS_SUCCESSFUL)
+  {
+#if RTEMS_RFS_BUFFER_ERRORS
+    printf ("rtems-rfs: buffer-bdbuf-request: block=%lu: bdbuf-%s: %d: %s\n",
+            block, read ? "read" : "get", sc, rtems_status_text (sc));
+#endif
+    rc = EIO;
+  }
+
+  return rc;
+}
+
+int
+rtems_rfs_buffer_bdbuf_release (rtems_rfs_buffer* buffer,
+                                bool              modified)
+{
+  rtems_status_code sc;
+  int               rc = 0;
+
+  if (rtems_rfs_trace (RTEMS_RFS_TRACE_BUFFER_RELEASE))
+    printf ("rtems-rfs: bdbuf-release: block=%" PRIuPTR " bdbuf=%" PRIu32 " %s\n",
+            ((intptr_t) buffer->user),
+            buffer->block, modified ? "(modified)" : "");
+
+  if (modified)
+    sc = rtems_bdbuf_release_modified (buffer);
+  else
+    sc = rtems_bdbuf_release (buffer);
+
+  if (sc != RTEMS_SUCCESSFUL)
+  {
+#if RTEMS_RFS_BUFFER_ERRORS
+    printf ("rtems-rfs: buffer-release: bdbuf-%s: %s(%d)\n",
+            modified ? "modified" : "not-modified",
+            rtems_status_text (sc), sc);
+#endif
+    rc = EIO;
+  }
+  
+  return rc;
+}
+
+#endif