1 /* vi: set sw=4 ts=4: */
3 * read_bb --- read the bad blocks inode
5 * Copyright (C) 1994 Theodore Ts'o.
8 * This file may be redistributed under the terms of the GNU Public
24 #include <sys/types.h>
30 struct read_bb_record
{
31 ext2_badblocks_list bb_list
;
36 * Helper function for ext2fs_read_bb_inode()
41 static int mark_bad_block(ext2_filsys fs
, blk_t
*block_nr
,
42 e2_blkcnt_t blockcnt
EXT2FS_ATTR((unused
)),
43 blk_t ref_block
EXT2FS_ATTR((unused
)),
44 int ref_offset
EXT2FS_ATTR((unused
)),
47 struct read_bb_record
*rb
= (struct read_bb_record
*) priv_data
;
52 if ((*block_nr
< fs
->super
->s_first_data_block
) ||
53 (*block_nr
>= fs
->super
->s_blocks_count
))
54 return 0; /* Ignore illegal blocks */
56 rb
->err
= ext2fs_badblocks_list_add(rb
->bb_list
, *block_nr
);
63 * Reads the current bad blocks from the bad blocks inode.
65 errcode_t
ext2fs_read_bb_inode(ext2_filsys fs
, ext2_badblocks_list
*bb_list
)
68 struct read_bb_record rb
;
69 struct ext2_inode inode
;
72 EXT2_CHECK_MAGIC(fs
, EXT2_ET_MAGIC_EXT2FS_FILSYS
);
75 retval
= ext2fs_read_inode(fs
, EXT2_BAD_INO
, &inode
);
78 if (inode
.i_blocks
< 500)
79 numblocks
= (inode
.i_blocks
/
80 (fs
->blocksize
/ 512)) + 20;
83 retval
= ext2fs_badblocks_list_create(bb_list
, numblocks
);
88 rb
.bb_list
= *bb_list
;
90 retval
= ext2fs_block_iterate2(fs
, EXT2_BAD_INO
, 0, 0,