busybox

/* vi: set sw=4 ts=4: */

/*

 * read_bb --- read the bad blocks inode

 *

 * Copyright (C) 1994 Theodore Ts'o.

 *

 * %Begin-Header%

 * This file may be redistributed under the terms of the GNU Public

 * License.

 * %End-Header%

 */

​

#include <stdio.h>

#include <string.h>

#if HAVE_UNISTD_H

#include <unistd.h>

#endif

#include <fcntl.h>

#include <time.h>

#if HAVE_SYS_STAT_H

#include <sys/stat.h>

#endif

#if HAVE_SYS_TYPES_H

#include <sys/types.h>

#endif

​

#include "ext2_fs.h"

#include "ext2fs.h"

​

struct read_bb_record {

    ext2_badblocks_list bb_list;

    errcode_t   err;

};

​

/*

 * Helper function for ext2fs_read_bb_inode()

 */

#ifdef __TURBOC__

# pragma argsused

#endif

static int mark_bad_block(ext2_filsys fs, blk_t *block_nr,

              e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),

              blk_t ref_block EXT2FS_ATTR((unused)),

              int ref_offset EXT2FS_ATTR((unused)),

              void *priv_data)

{

    struct read_bb_record *rb = (struct read_bb_record *) priv_data;

​

    if (blockcnt < 0)

        return 0;

​

    if ((*block_nr < fs->super->s_first_data_block) ||

        (*block_nr >= fs->super->s_blocks_count))

        return 0;   /* Ignore illegal blocks */

​

    rb->err = ext2fs_badblocks_list_add(rb->bb_list, *block_nr);

    if (rb->err)

        return BLOCK_ABORT;

    return 0;

}

​

/*

 * Reads the current bad blocks from the bad blocks inode.