Tribblix: manual page: di_link_next_by

DI_LINK_NEXT_BY_NODE(3DEVINFO) Device Information Library Functions

NAME

di_link_next_by_node, di_link_next_by_lnode - libdevinfo link
traversal functions

SYNOPSIS

cc [ flag... ] file... -ldevinfo [ library... ]
#include <libdevinfo.h>

di_link_t di_link_next_by_node(di_lnode_t node, di_link_t link,
uint_t endpoint);

di_link_t di_link_next_by_lnode(di_node_t lnode, di_link_t link,
uint_t endpoint);

PARAMETERS

link
The handle to the current the link or DI_LINK_NIL.

endpoint
Specify which endpoint of the link the node or lnode
should correspond to, either DI_LINK_TGT or DI_LINK_SRC.

node
The device node with which the link is associated.

lnode
The lnode with which the link is associated.

DESCRIPTION

The di_link_next_by_node() function returns a handle to the next link
that has the same endpoint node as link. If link is DI_LINK_NIL, a
handle is returned to the first link whose endpoint specified by
endpoint matches the node specified by node.

The di_link_next_by_lnode() function returns a handle to the next
link that has the same endpoint lnode as link. If link is
DI_LINK_NIL, a handle is returned to the first link whose endpoint
specified by endpoint matches the lnode specified by lnode.

RETURN VALUES

Upon successful completion, a handle to the next link is returned.
Otherwise, DI_LINK_NIL is returned and errno is set to indicate the
error.

ERRORS

The di_link_next_by_node() and di_link_next_by_lnode() functions will
fail if:

EINVAL
An argument is invalid.

ENXIO
The end of the link list has been reached.

The di_link_next_by_node() function will fail if:

ENOTSUP
Device usage information is not available in snapshot.

ATTRIBUTES