2 * read_bb --- read the bad blocks inode
4 * Copyright (C) 1994 Theodore Ts'o.
7 * This file may be redistributed under the terms of the GNU Library
8 * General Public License, version 2.
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 >= ext2fs_blocks_count(fs->super)))
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 numblocks = inode.i_blocks;
79 if (!(ext2fs_has_feature_huge_file(fs->super) &&
80 (inode.i_flags & EXT4_HUGE_FILE_FL)))
81 numblocks = numblocks / (fs->blocksize / 512);
85 if (numblocks > 50000)
87 retval = ext2fs_badblocks_list_create(bb_list, numblocks);
92 rb.bb_list = *bb_list;
94 retval = ext2fs_block_iterate2(fs, EXT2_BAD_INO, BLOCK_FLAG_READ_ONLY,
95 0, mark_bad_block, &rb);