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The BNode structure is used for all non-leaf BNodes. For those nodes it is used
to point to a specific part further down the tree. Leaf nodes have their own
structure, which is based on this structure. Only the first field of such a leaf
node structure needs to be the same as the BNode structure. The data field can be
used in any way desired, and for leaf nodes the structure can be extended with extra
information as well. See the ExtentBNode structure for
more information on such an extended BNode structure used for leaf nodes.
| Field |
Type |
Description |
| key |
ULONG |
A key value. What this value represents exactly is determined by
the nature of the B-Tree. At the moment only one B-Tree is in use. This B-Tree
is used to store block numbers which contain data belonging to files, and the key value is
in this case a block number. |
| data |
ULONG |
The data belonging to this key value. In the case of a leaf node,
this value can represent any data you wish to store in the tree. For normal nodes
the data field holds a block number to a child BNodeContainer. |
struct BNode {
ULONG key;
ULONG data;
};
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