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di_path_bus_addr(3devinfo)
Device Information Library Functions
di_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. It is a failover path.
DI_PATH_STATE_UNAVAILABLE
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.
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
tab() box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) ATTRIBUTE TYPEAT‐
TRIBUTE VALUE _ Interface StabilityCommitted _ MT-LevelSafe
SEE ALSO
di_path_client_next_path(3DEVINFO), di_path_prop_lookup_bytes(3DEV‐
INFO), di_bus_addr(3DEVINFO), di_devfs_path(3DEVINFO), di_init(3DEV‐
INFO), di_instance(3DEVINFO), di_node_name(3DEVINFO),
di_path_prop_bytes(3DEVINFO), di_path_prop_next(3DEVINFO),
di_path_prop_next(3DEVINFO), libdevinfo(3LIB), attributes(7)
Writing Device Drivers in Oracle Solaris 11.4
Oracle Solaris 11.4 10 Jul 2012
di_path_bus_addr(3DEVINFO)