LINKB(9F) Kernel Functions for Drivers LINKB(9F)
linkb - concatenate two message blocks
#include <sys/stream.h>
void linkb(mblk_t *mp1, mblk_t *mp2);
Architecture independent level 1 (DDI/DKI).
The linkb() function creates a new message by adding mp2 to the tail
of mp1. The continuation pointer, b_cont, of mp1 is set to point to
mp2.
The following figure describes how the linkb(m1, m2); function
concatenates two message blocks, mp1 and mp2:
Printed copy or docs.sun.com shows a figure that describes how the
linkb(m1, m2); function creates a new message by adding mp1 to the
tail of mp2
mp1
The message to which mp2 is to be added. mblk_t is an instance
of the msgb(9S) structure.
mp2
The message to be added.
The linkb() function can be called from user, interrupt, or kernel
context.
See dupb(9F) for an example that uses linkb().
dupb(9F), unlinkb(9F), msgb(9S)
Writing Device Drivers
STREAMS Programming Guide
January 16, 2006 LINKB(9F)
NAME
linkb - concatenate two message blocks
SYNOPSIS
#include <sys/stream.h>
void linkb(mblk_t *mp1, mblk_t *mp2);
INTERFACE LEVEL
Architecture independent level 1 (DDI/DKI).
DESCRIPTION
The linkb() function creates a new message by adding mp2 to the tail
of mp1. The continuation pointer, b_cont, of mp1 is set to point to
mp2.
The following figure describes how the linkb(m1, m2); function
concatenates two message blocks, mp1 and mp2:
Printed copy or docs.sun.com shows a figure that describes how the
linkb(m1, m2); function creates a new message by adding mp1 to the
tail of mp2
PARAMETERS
mp1
The message to which mp2 is to be added. mblk_t is an instance
of the msgb(9S) structure.
mp2
The message to be added.
CONTEXT
The linkb() function can be called from user, interrupt, or kernel
context.
EXAMPLES
See dupb(9F) for an example that uses linkb().
SEE ALSO
dupb(9F), unlinkb(9F), msgb(9S)
Writing Device Drivers
STREAMS Programming Guide
January 16, 2006 LINKB(9F)