copyresp(9s) [sunos man page]

copyresp(9S)						    Data Structures for Drivers 					      copyresp(9S)

NAME

       copyresp - STREAMS data structure for the M_IOCDATA message type

SYNOPSIS

       #include <sys/stream.h>

INTERFACE LEVEL

       Architecture independent level 1 (DDI/DKI)

DESCRIPTION

       The data structure copyresp is used with the M_IOCDATA message type.

STRUCTURE MEMBERS

       int	cp_cmd;       /* ioctl command (from ioc_cmd) */
       cred_t	*cp_cr;       /* full credentials */
       uint_t	cp_id;	      /* ioctl id (from ioc_id) */
       uint_t	cp_flag;      /* ioctl flags */
       mblk_t	*cp_private;  /* private state information */
       caddr_t	cp_rval;      /* status of request: 0 -> success;
			      /* non-zero -> failure */

SEE ALSO

       STREAMS Programming Guide

SunOS 5.10							    14 Nov 1996 						      copyresp(9S)

msgb(9S)						    Data Structures for Drivers 						  msgb(9S)

NAME

       msgb, mblk - STREAMS message block structure

SYNOPSIS

       #include <sys/stream.h>

INTERFACE LEVEL

       Architecture independent level 1 (DDI/DKI)

DESCRIPTION

       A  STREAMS  message  is made up of one or more message blocks, referenced by a pointer to a msgb structure. The b_next and  b_prev pointers
       are used to link messages together on a QUEUE. The  b_cont pointer links message blocks together when a message consists of more  than  one
       block.

       Each   msgb  structure also includes a pointer to a  datab(9S) structure, the data block (which contains pointers to the actual data of the
       message), and the type of the message.

STRUCTURE MEMBERS

       struct msgb     *b_next; 	  /* next message on queue */
       struct msgb     *b_prev; 	  /* previous message on queue */
       struct msgb     *b_cont; 	  /* next message block */
       unsigned char   *b_rptr; 	  /* 1st unread data byte of buffer */
       unsigned char   *b_wptr; 	  /* 1st unwritten data byte of buffer */
       struct datab    *b_datap;	  /* pointer to data block */
       unsigned char   b_band;		  /* message priority  */
       unsigned short  b_flag;		  /* used by stream head  */

       Valid flags are as follows:

       MSGMARK	       Last byte of message is marked.

       MSGDELIM        Message is delimited.

       The msgb structure is defined as type mblk_t.

SEE ALSO

       datab(9S)

       Writing Device Drivers

       STREAMS Programming Guide

SunOS 5.10							    11 Apr 1991 							  msgb(9S)