Content-type: text/html Man page of di_walk_link

di_walk_link

Section: Device Information Library Functions (3DEVINFO)
Updated: 22 Mar 2004
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NAME

di_walk_link - traverse libdevinfo links  

SYNOPSIS

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

int di_walk_link(di_node_t root, uint_t flag, uint_t endpoint, void *arg, int (*link_callback)(di_link_t link, void *arg));  

PARAMETERS

root The handle to the root node of the subtree to visit.

flag Specify 0. Reserved for future use.

endpoint Specify if the current node being visited should be the target or source of an link, either DI_LINK_TGT or DI_LINK_SRC

arg A pointer to caller-specific data.

link_callback The caller-supplied callback function.

 

DESCRIPTION

The di_walk_link() function visits all nodes in the subtree rooted at root. For each node found, the caller-supplied function link_callback() is invoked for each link associated with that node where that node is the specified endpoint of the link. The return value of link_callback() specifies subsequent walking behavior. See RETURN VALUES.  

RETURN VALUES

Upon successful completion, di_walk_link() returns 0. Otherwise, -1 is returned and errno is set to indicate the error.

The callback function, link_callback(), can return one of the following:

DI_WALK_CONTINUE Continue walking.

DI_WALK_TERMINATE Terminate the walk immediately.

 

ERRORS

The di_walk_link() function will fail if:

EINVAL An argument is invalid.

 

ATTRIBUTES

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

ATTRIBUTE TYPEATTRIBUTE VALUE
Interface StabilityEvolving
MT-LevelSafe

 

SEE ALSO

di_init(3DEVINFO), libdevinfo(3LIB), attributes(5)


 

Index

NAME
SYNOPSIS
PARAMETERS
DESCRIPTION
RETURN VALUES
ERRORS
ATTRIBUTES
SEE ALSO

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Time: 02:39:20 GMT, October 02, 2010