1 files changed, 183 insertions, 0 deletions
diff --git a/nuttx/fs/nxffs/nxffs_dump.c b/nuttx/fs/nxffs/nxffs_dump.c
new file mode 100644
index 000000000..e93200afd
--- /dev/null
+++ b/nuttx/fs/nxffs/nxffs_dump.c
@@ -0,0 +1,183 @@
+/****************************************************************************
+ * fs/nxffs/nxffs_dump.c
+ *
+ *   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * References: Linux/Documentation/filesystems/romfs.txt
+ *
+ * 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 <string.h>
+#include <debug.h>
+#include <errno.h>
+
+#include <nuttx/kmalloc.h>
+#include <nuttx/ioctl.h>
+#include <nuttx/mtd.h>
+
+#include "nxffs.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: nxffs_analyze
+ *
+ * Description:
+ *   Analyze the content of one block.
+ *
+ ****************************************************************************/
+
+#if defined(CONFIG_DEBUG) && defined(CONFIG_DEBUG_FS)
+static inline void nxffs_analyze(FAR uint8_t *buffer, size_t buflen, off_t blockno)
+{
+  FAR struct nxffs_block_s *blkhdr;
+
+  /* Verify that there is a header on the block */
+
+  blkhdr = (FAR struct nxffs_block_s *)buffer;
+  if (memcmp(blkhdr->magic, g_blockmagic, NXFFS_MAGICSIZE) != 0)
+    {
+      fdbg("Block %d: ERROR -- no header\n", blockno);
+    }
+  else if (blkhdr->state == BLOCK_STATE_GOOD)
+    {
+      fdbg("Block %d: GOOD\n", blockno);
+    }
+  else if (blkhdr->state == BLOCK_STATE_BAD)
+    {
+      fdbg("Block %d: BAD\n", blockno);
+    }
+  else
+    {
+      fdbg("Block %d: ERROR -- bad state\n", blockno);
+    }
+}
+#endif
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: nxffs_dump
+ *
+ * Description:
+ *   Dump a summary of the contents of an NXFFS file system.  CONFIG_DEBUG
+ *   and CONFIG_DEBUG_FS must be enabled for this function to do anything.
+ *
+ * Input Parameters:
+ *   mtd - The MTD device that provides the interface to NXFFS-formatted media.
+ *
+ * Returned Value:
+ *   Zero is returned on success.  Otherwise, a negated errno value is
+ *   returned to indicate the nature of the failure.
+ *
+ ****************************************************************************/
+
+int nxffs_dump(FAR struct mtd_dev_s *mtd)
+{
+#if defined(CONFIG_DEBUG) && defined(CONFIG_DEBUG_FS)
+  struct mtd_geometry_s geo;
+  FAR uint8_t *buffer;
+  off_t nblocks;
+  off_t block;
+  int ret;
+
+  /* Get the volume geometry. (casting to uintptr_t first eliminates
+   * complaints on some architectures where the sizeof long is different
+   * from the size of a pointer).
+   */
+
+  ret = MTD_IOCTL(mtd, MTDIOC_GEOMETRY, (unsigned long)((uintptr_t)&geo));
+  if (ret < 0)
+    {
+      fdbg("MTD ioctl(MTDIOC_GEOMETRY) failed: %d\n", -ret);
+      goto errout;
+    }
+
+  /* Allocate a buffer to hold one block */
+
+  buffer = (FAR uint8_t *)kmalloc(geo.blocksize);
+  if (!buffer)
+    {
+      fdbg("Failed to allocate block cache\n");
+      ret = -ENOMEM;
+      goto errout;
+    }
+
+  /* Now read every block on the device */
+
+  nblocks = geo.erasesize * geo.neraseblocks / geo.blocksize;
+  for (block = 0; block < nblocks; block++)
+    {
+      /* Read the next block */
+
+      ret = MTD_BREAD(mtd, block, 1, buffer);
+      if (ret < 0)
+        {
+          fdbg("Failed to read block %d\n", block);
+          goto errout_with_block;
+        }
+
+      /* Analyze the block */
+
+      nxffs_analyze(buffer, geo.blocksize, block);
+    }
+
+errout_with_block:
+  kfree(buffer);
+errout:
+  return ret;
+
+#else
+  return -ENOSYS;
+#endif
+}