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152 lines
5.5 KiB
152 lines
5.5 KiB
/**************************************************************************** |
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* fs/nxffs/nxffs_blockstats.c |
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* |
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* Copyright (C) 2011 Gregory Nutt. All rights reserved. |
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* Author: Gregory Nutt <gnutt@nuttx.org> |
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* |
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* References: Linux/Documentation/filesystems/romfs.txt |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* 3. Neither the name NuttX nor the names of its contributors may be |
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* used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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* POSSIBILITY OF SUCH DAMAGE. |
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* |
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****************************************************************************/ |
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/**************************************************************************** |
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* Included Files |
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****************************************************************************/ |
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#include <nuttx/config.h> |
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#include <string.h> |
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#include <errno.h> |
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#include <debug.h> |
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#include <nuttx/mtd.h> |
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#include "nxffs.h" |
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/**************************************************************************** |
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* Pre-processor Definitions |
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****************************************************************************/ |
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/**************************************************************************** |
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* Private Types |
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****************************************************************************/ |
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/**************************************************************************** |
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* Public Variables |
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****************************************************************************/ |
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/**************************************************************************** |
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* Private Functions |
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****************************************************************************/ |
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/**************************************************************************** |
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* Public Functions |
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****************************************************************************/ |
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/**************************************************************************** |
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* Name: nxffs_blockstats |
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* |
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* Description: |
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* Analyze the NXFFS volume. This operation must be performed when the |
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* volume is first mounted in order to detect if the volume has been |
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* formatted and contains a usable NXFFS file system. |
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* |
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* Input Parameters: |
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* volume - Describes the current NXFFS volume. |
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* stats - On return, will hold nformation describing the state of the |
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* volume. |
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* |
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* Returned Value: |
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* Negated errnos are returned only in the case of MTD reported failures. |
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* Nothing in the volume data itself will generate errors. |
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* |
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****************************************************************************/ |
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int nxffs_blockstats(FAR struct nxffs_volume_s *volume, |
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FAR struct nxffs_blkstats_s *stats) |
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{ |
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FAR uint8_t *bptr; /* Pointer to next block data */ |
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off_t ioblock; /* I/O block number */ |
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int lblock; /* Logical block index */ |
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int ret; |
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/* Process each erase block */ |
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memset(stats, 0, sizeof(struct nxffs_blkstats_s)); |
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for (ioblock = 0; ioblock < volume->nblocks; ioblock += volume->blkper) |
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{ |
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/* Read the full erase block */ |
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ret = MTD_BREAD(volume->mtd, ioblock, volume->blkper, volume->pack); |
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if (ret < volume->blkper) |
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{ |
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fdbg("Failed to read erase block %d: %d\n", ioblock / volume->blkper, -ret); |
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return ret; |
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} |
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/* Process each logical block */ |
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for (bptr = volume->pack, lblock = 0; |
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lblock < volume->blkper; |
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bptr += volume->geo.blocksize, lblock++) |
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{ |
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FAR struct nxffs_block_s *blkhdr = (FAR struct nxffs_block_s*)bptr; |
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/* Collect statistics */ |
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stats->nblocks++; |
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if (memcmp(blkhdr->magic, g_blockmagic, NXFFS_MAGICSIZE) != 0) |
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{ |
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stats->nunformat++; |
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} |
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else if (blkhdr->state == BLOCK_STATE_BAD) |
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{ |
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stats->nbad++; |
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} |
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else if (blkhdr->state == BLOCK_STATE_GOOD) |
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{ |
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stats-> ngood++; |
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} |
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else |
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{ |
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stats->ncorrupt++; |
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} |
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} |
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} |
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fdbg("Number blocks: %d\n", stats->nblocks); |
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fdbg(" Good blocks: %d\n", stats->ngood); |
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fdbg(" Bad blocks: %d\n", stats->nbad); |
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fdbg(" Unformatted blocks: %d\n", stats->nunformat); |
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fdbg(" Corrupt blocks: %d\n", stats->ncorrupt); |
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return OK; |
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} |
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