allocb_tmpl(9F) Kernel Functions for Drivers allocb_tmpl(9F)NAMEallocb_tmpl - allocate a message block using a template
SYNOPSIS
#include <sys/stream.h>
mblk_t *allocb_tmpl(size_t size, const mblk_t *tmpl);
INTERFACE LEVEL
Solaris DDI specific (Solaris DDI)
PARAMETERS
size The number of bytes in the message block.
tmpl The template message block.
DESCRIPTION
The allocb_tmpl() function tries to allocate a STREAMS message block
using allocb(9F). If the allocation is successful, the db_type field in
the data block structure (dblk_t, see datab(9S)), as well as some
implementation-private data, are copied from the dblk_t associated with
tmpl.
The allocb_tmpl() function should be used when a new STREAMS message
block is allocated. This block is then used to contain data derived
from another STREAMS message block. The original message is used as the
tmpl argument.
RETURN VALUES
Upon success, allocb_tmpl() returns a pointer to the allocated message
block of the same type as tmpl. On failure, allocb_tmpl() returns a
NULL pointer.
CONTEXT
The allocb_tmpl() function can be called from user, interrupt, or ker‐
nel context.
SEE ALSOallocb(9F), datab(9S), msgb(9S)SunOS 5.10 16 Jan 2006 allocb_tmpl(9F)
