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

NAME

       ldi_ev_get_cookie - get an LDI event cookie for a specified event

SYNOPSIS

       #include <sys/sunldi.h>

       int ldi_ev_get_cookie(ldi_handle_t lh, char *evname,
	    ldi_ev_cookie_t *cookiep);

INTERFACE LEVEL

       Solaris DDI specific (Solaris DDI)

PARAMETERS

       ldi_handle_t lh

	   A layered handle representing the device for which the event notification was requested.

       char *evname

	   The string name of the event.

       ldi_ev_cookie_t *cookiep

	   A pointer to type ldi_ev_cookie_t. Contains a pointer to the event cookie on return.

DESCRIPTION

       The  ldi_ev_get_cookie()  function  accepts  the string name of a state change event affecting the device represented by the layered driver
       handle "lh" and returns an opaque cookie on success. The call is successful if the framework supports  event  notification  for	the  event
       named  by  "evname". If successful, the function returns an opaque cookie through the "cookiep" parameter. The cookie is required in subse-
       quent calls for registering callbacks on events.

       The following two LDI events are currently defined:

       LDI_EV_OFFLINE

	   The device is moving to the offline state.

       LDI_EV_DEGRADE

	   The device is moving to the degraded state.

       ldi_ev_get_cookie() also accepts the string name of any events defined  for  NDI  event	services.  For	such  events,  ldi_ev_get_cookie()
       replaces ldi_get_eventcookie(9F) (which is now obsolete).

RETURN VALUES

       The return values for this function are:

       LDI_EV_SUCCESS

	   The event cookie was created successfully.

       LDI_EV_FAILURE

	   An error occurred and the cookie was not created.

CONTEXT

       This function can be called from user and kernel contexts only.

SEE ALSO

       ldi_ev_register_callbacks(9F), ldi_ev_remove_callbacks(9F)

SunOS 5.11							    21 Aug 2007 					     ldi_ev_get_cookie(9F)