cc [ flag... ] file... –ldevinfo [ library... ] #include <libdevinfo.h> char *di_path_bus_addr(di_path_t path);
di_node_t di_path_client_node( di_path_t path);
int di_path_instance( di_path_t path);
char *di_path_node_name( di_path_t path);
di_node_t di_path_phci_node( di_path_t path);
di_path_state_t di_path_state( di_path_t path);
The handle to a path node in a di_init(3DEVINFO) snapshot.
These functions extract information associated with a path node.
The di_path_bus_addr() function returns a string representing the pHCI child path node's unit-address. This function is the di_path_t peer of di_bus_addr(3DEVINFO).
The di_path_client_node() function returns the di_node_t of the 'client' device node associated with the given path node. If the client device node is not present in the current device tree snapshot, DI_NODE_NIL is returned and errno is set to ENOTSUP.
The di_path_node_name() function returns a pointer to a null-terminated string containing the path node name. This function is the di_path_t peer of di_node_name(3DEVINFO).
The di_path_instance() function returns the instance number associated with the given path node. A path node instance is persistent across attach (9E)/detach(9E) and device reconfigurations, but not across reboot. A path node instance is unrelated to a device node di_instance(3DEVINFO).
The di_path_phci_node() function returns the di_node_t of the pHCI host adapter associated with the given path node. If the pHCI device node is not present in the current device tree snapshot, DI_NODE_NIL is returned and errno is set to ENOTSUP.
The di_path_state() function returns the state of an I/O path. This function may return one of the following values:
Identifies that the path_info node is online and I/O requests can be routed through this path.
Identifies that the path_info node is in offline state.
Identifies that the path_info node is in faulted state and not ready for I/O operations.
Identifies that the path_info node is in standby state and not ready for I/O operations. It is a failover path.
Identifies that the path_info node is in unavailable state and not ready for I/O operations. It cannot be used as a failover path.
See attributes(5) for descriptions of the following attributes:
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di_bus_addr(3DEVINFO), di_devfs_path(3DEVINFO), di_init(3DEVINFO), di_instance(3DEVINFO), di_node_name(3DEVINFO), di_path_client_next_path(3DEVINFO), di_path_prop_next(3DEVINFO), di_path_prop_bytes(3DEVINFO), di_path_prop_lookup_bytes(3DEVINFO), di_path_prop_next(3DEVINFO), libdevinfo(3LIB) , attributes (5)