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ddi_get_eventcookie - retrieve a NDI event service cookie handle

#include <sys/dditypes.h>
#include <sys/sunddi.h>

int ddi_get_eventcookie(dev_info_t *dip, char *name,
 ddi_eventcookie_t *event_cookiep);

illumos DDI specific (illumos DDI). dev_info_t *dip char *name ddi_eventcookie_t *event_cookiep The ddi_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 a calling up the device tree hierarchy 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, unregister a callback handler, or post an event.

DDI_SUCCESS DDI_FAILURE The ddi_get_eventcookie() function can be called from user and kernel contexts only. See attributes(7) for a description of the following attributes:

ATTRIBUTE TYPE ATTRIBUTE VALUE

Interface Stability Committed

attributes (7), ddi_add_event_handler (9F), ddi_remove_event_handler (9F)

Writing Device Drivers