di_path_bus_addr(3DEVDevice Information Library Funcdi_path_bus_addr(3DEVINFO)NAME
di_path_bus_addr, di_path_client_node, di_path_instance,
di_path_node_name, di_path_phci_node, di_path_state - return libdevinfo
path node information
SYNOPSIS
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);
PARAMETERS
path The handle to a path node in a di_init(3DEVINFO) snapshot.
DESCRIPTION
These functions extract information associated with a path node.
RETURN VALUES
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:
DI_PATH_STATE_ONLINE
Identifies that the path_info node is online and I/O requests can
be routed through this path.
DI_PATH_STATE_OFFLINE
Identifies that the path_info node is in offline state.
DI_PATH_STATE_FAULT
Identifies that the path_info node is in faulted state and not
ready for I/O operations.
DI_PATH_STATE_STANDBY
Identifies that the path_info node is in standby state and not
ready for I/O operations.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌─────────────────────────────┬─────────────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├─────────────────────────────┼─────────────────────────────┤
│Interface Stability │Committed │
├─────────────────────────────┼─────────────────────────────┤
│MT-Level │Safe │
└─────────────────────────────┴─────────────────────────────┘
SEE ALSOdi_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)
Writing Device Drivers
SunOS 5.11 15 May 2008 di_path_bus_addr(3DEVINFO)