LDI_GET_EVENTCOOKIE(9F) Kernel Functions for Drivers LDI_GET_EVENTCOOKIE(9F)

NAME

ldi_get_eventcookie - retrieve NDI event service cookie

SYNOPSIS

#include <sys/ddi_obsolete.h>

int ldi_get_eventcookie(ldi_handle_t lh, char *name
ddi_eventcookie_t *ecp);

INTERFACE LEVEL

Obsolete

PARAMETERS

ldi_handle_t lh
Layered handle.


char *name
null-terminated string containing the event
name.


ddi_eventcookie_t *ecp
Pointer to the kernel event cookie.

DESCRIPTION

This function is obsolete and is only maintained for compatibility. Use
of this function is strongly discouraged. For equivalent functionality
provided by new interfaces, see ldi_ev_get_cookie(9F) and
ldi_ev_register_callbacks(9F).


The ldi_get_eventcookie() function queries the device tree for a cookie
matching the given event name and returns a reference to that cookie. The
search is performed by calling up the device tree hierarchy of the
device represented by the layered driver handle until the request is
satisfied by a bus nexus driver, or the top of the dev_info tree is
reached.


The cookie returned by this function can be used to register a callback
handler with ldi_add_event_handler(9F).

RETURN VALUES

DDI_SUCCESS
Cookie handle is returned.


DDI_FAILURE
Request was not serviceable by any nexus driver in the
target device's ancestral device tree hierarchy.

CONTEXT

This function may be called from user or kernel contexts.

SEE ALSO

ldi_add_event_handler(9F), ldi_ev_get_cookie(9F),
ldi_ev_register_callbacks(9F), ldi_remove_event_handler(9F)


Writing Device Drivers


August 21, 2007 LDI_GET_EVENTCOOKIE(9F)