freebsd man page for biosize

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

NAME

       biosize - returns size of a buffer structure

SYNOPSIS

       #include <sys/ddi.h>
       #include <sys/sunddi.h>

       size_tbiosize(void);

INTERFACE LEVEL

       Solaris DDI specific (Solaris DDI).

DESCRIPTION

       The   biosize() function returns the size in bytes of the buf(9S) structure. The  biosize() function is used by drivers in combination with
       kmem_alloc(9F) and bioinit(9F) to allocate buffer structures embedded in other data structures.

CONTEXT

       The biosize() function can be called from any context.

SEE ALSO

       biofini(9F), bioinit(9F), getrbuf(9F), kmem_alloc(9F), buf(9S)

       Writing Device Drivers

SunOS 5.10							    20 Nov 1996 						       biosize(9F)