fsck_chk_node_blk完成对所有类型的node进行检查。
node类型有:TYPE_INODE,TYPE_DIRECT_NODE,TYPE_INDIRECT_NODE,TYPE_DOUBLE_INDIRECT_NODE,TYPE_XATTR。但是调用这个函数不会是TYPE_XATTR。
文件类型有:F2FS_FT_UNKNOWN、F2FS_FT_REG_FILE、F2FS_FT_DIR、F2FS_FT_CHRDEV、F2FS_FT_BLKDEV、F2FS_FT_FIFO、F2FS_FT_SOCK、F2FS_FT_SYMLINK、F2FS_FT_MAX、F2FS_FT_ORPHAN、F2FS_FT_XATTR。这里面重点关注的是F2FS_FT_DIR和F2FS_FT_ORPHAN。
fsck_chk_node_blk首先通过sanity_check_nid对nid进行基本的检查,如果是TYPE_INODE就对inode的i_mode进行检查来选择是否将inode删掉。然后就调用fsck_chk_inode_blk对inode下的所有的node和data进行检查。如果是TYPE_DIRECT_NODE就调用fsck_chk_dnode_blk对direct node进行检查,如果是TYPE_INDIRECT_NODE就调用fsck_chk_idnode_blk对indirect node进行检查,如果是TYPE_DINDIRECT_NODE就调用fsck_chk_didnode_blk对dindirect node进行检查。
int fsck_chk_node_blk(struct f2fs_sb_info *sbi, struct f2fs_inode *inode,
u32 nid, enum FILE_TYPE ftype, enum NODE_TYPE ntype,
u32 *blk_cnt, struct child_info *child)
{
struct node_info ni;
struct f2fs_node *node_blk = NULL;
node_blk = (struct f2fs_node *)calloc(BLOCK_SZ, 1);
ASSERT(node_blk != NULL);
if (sanity_check_nid(sbi, nid, node_blk, ftype, ntype, &ni))
goto err;
if (ntype == TYPE_INODE) {
struct f2fs_fsck *fsck = F2FS_FSCK(sbi);
if (sanity_check_inode(sbi, node_blk))
goto err;
fsck_chk_inode_blk(sbi, nid, ftype, node_blk, blk_cnt, &ni, child);
quota_add_inode_usage(fsck->qctx, nid, &node_blk->i);
} else {
switch (ntype) {
case TYPE_DIRECT_NODE:
f2fs_set_main_bitmap(sbi, ni.blk_addr, CURSEG_WARM_NODE);
fsck_chk_dnode_blk(sbi, inode, nid, ftype, node_blk,
blk_cnt, child, &ni);
break;
case TYPE_INDIRECT_NODE:
f2fs_set_main_bitmap(sbi, ni.blk_addr, CURSEG_COLD_NODE);
fsck_chk_idnode_blk(sbi, inode, ftype, node_blk, blk_cnt, child);
break;
case TYPE_DOUBLE_INDIRECT_NODE:
f2fs_set_main_bitmap(sbi, ni.blk_addr, CURSEG_COLD_NODE);
fsck_chk_didnode_blk(sbi, inode, ftype, node_blk, blk_cnt, child);
break;
default:
ASSERT(0);
}
}
free(node_blk);
return 0;
err:
free(node_blk);
return -EINVAL;
}