full shutdown in smp Post: 302094833

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LEARN ABOUT SUNOS

ldi_putmsg

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

NAME

       ldi_putmsg, ldi_getmsg - Read/write message blocks from/to a stream

SYNOPSIS

       #include <sys/sunldi.h>

       int ldi_putmsg(ldi_handle_t lh, mblk_t *smp);

       int  ldi_getmsg(ldi_handle_t lh, mblk_t **rmp, timestruc_t *timeo);

PARAMETERS

       lh	       Layered handle.

       smp	       Message block to send.

       rmp	       Message block to receive.

       timeo	       Optional timeout for data reception.

DESCRIPTION

       The  ldi_putmsg	function  allows a caller to send a message block to a streams device specified by the layered handle lh. Once the message
       (smp) has been passed to ldi_putmsg(), the caller must not free the message even if an error occurs.

       The ldi_getmsg() function allows a caller to receive a message block from a streams device specified by the layered handle lh. Callers must
       free the message received with freemsg(9F).

       If a NULL timeout value is specified when the caller receives a message, the caller sleeps until a message is received.

RETURN VALUES

       The ldi_putmsg() and ldi_getmsg() functions return 0 upon success. If a failure occurs before the request is passed to the device, the pos-
       sible return values are shown below. Otherwise any other error number may be returned by the device.

       EINVAL	       Invalid input parameters.

       ENOTSUP	       Operation is not supported for this device.

		       The ldi_getmsg() function may also return:

		       ETIME	       Returned if the timeout timeo expires with no messages received.

CONTEXT

       These functions may be called from user or kernel context.

SunOS 5.10							    3 June 2003 						    ldi_putmsg(9F)

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