DB Simple

Simple file-based JSON database for persistent GObj attributes.

Source: kernel/c/root-linux/src/dbsimple.h

`db_load_persistent_attrs()`¶

Loads writable persistent attributes from the file-based store and updates the gobj’s attributes.

int db_load_persistent_attrs(
    hgobj gobj,
    json_t *keys   // owned
);

Parameters

Key	Type	Description
`gobj`	`hgobj`	GObject whose attributes are loaded.
`keys`	`json_t *`	JSON object or array of attribute names to load (owned).

Returns

0 on success.

Saves writable persistent attributes to the file-based store.

int db_save_persistent_attrs(
    hgobj gobj,
    json_t *keys   // owned
);

Parameters

Key	Type	Description
`gobj`	`hgobj`	GObject whose attributes are saved.
`keys`	`json_t *`	JSON object or array of attribute names to save (owned).

Returns

0 on success.

Removes persistent attributes from the file-based store.

int db_remove_persistent_attrs(
    hgobj gobj,
    json_t *keys   // owned
);

Parameters

Key	Type	Description
`gobj`	`hgobj`	GObject whose attributes are removed.
`keys`	`json_t *`	JSON object or array of attribute names to remove (owned).

Returns

0 on success.

Lists persistent attributes stored for a gobj.

json_t *db_list_persistent_attrs(
    hgobj gobj,
    json_t *keys   // owned
);

Parameters

Key	Type	Description
`gobj`	`hgobj`	GObject to query.
`keys`	`json_t *`	JSON object or array of attribute names to list (owned).

Returns

JSON object containing the requested attributes (owned by caller — must be freed).