names

The address of a pointer.

node

A handle to a device node.

These functions extract information associated with a device node.

The di_binding_name() function returns a pointer to the binding name. The binding name is the name used by the system to select a driver for the device.

The di_bus_addr() function returns a pointer to a null-terminated string containing the assigned bus address for the device. NULL is returned if a bus address has not been assigned to the device. A zero-length string may be returned and is considered a valid bus address.

The return value of di_compatible_names() is the number of compatible names. names is updated to point to a buffer contained within the snapshot. The buffer contains a concatenation of null-terminated strings, for example:

<name1>/0<name2>/0...<namen>/0

See the discussion of generic names in Writing Device Drivers for a description of how compatible names are used by Solaris to achieve driver binding for the node.

The di_devid() function returns the device ID for node, if it is registered. Otherwise, a null pointer is returned. Interfaces in the libdevid(3LIB) library may be used to manipulate the handle to the device id.

This function is obsolete and may be removed from a future Solaris release. Applications should use the "devid" property instead.

The di_driver_name() function returns the name of the driver bound to the node. A null pointer is returned if node is not bound to any driver.

The di_driver_ops() function returns a bit array of device driver entry points that are supported by the driver bound to this node. Possible bit fields supported by the driver are DI_CB_OPS, DI_BUS_OPS, DI_STREAM_OPS.

The di_instance() function returns the instance number of the device. A value of -1 indicates an instance number has not been assigned to the device by the system.

The di_nodeid() function returns the type of device, which may be one of the following possible values: DI_PSEUDO_NODEID, DI_PROM_NODEID, and DI_SID_NODEID. Devices of type DI_PROM_NODEID may have additional properties that are defined by the PROM. See di_prom_prop_data(3DEVINFO) and di_prom_prop_lookup_bytes(3DEVINFO).

The di_node_name() function returns a pointer to a null-terminated string containing the node name.

See di_init(3DEVINFO) for an example demonstrating typical use of these functions.

See attributes(5) for descriptions of the following attributes:

di_init(3DEVINFO), di_prom_init(3DEVINFO), di_prom_prop_data(3DEVINFO), di_prom_prop_lookup_bytes(3DEVINFO), libdevid(3LIB), libdevinfo(3DEVINFO), attributes(5)

Writing Device Drivers