biosize(9f) [minix man page]

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)

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

NAME

       bioinit - initialize a buffer structure

SYNOPSIS

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

       voidbioinit(struct buf *bp);

INTERFACE LEVEL

       Solaris DDI specific (Solaris DDI).

PARAMETERS

       bp	Pointer to the buffer header structure.

DESCRIPTION

       The  bioinit()  function  initializes a buf(9S) structure. A buffer structure contains state information which has to be initialized if the
       memory for the buffer was allocated using kmem_alloc(9F). This is not necessary for a buffer allocated using getrbuf(9F) because  getrbuf()
       will call bioinit() directly.

CONTEXT

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

EXAMPLES

       Example 1: Using bioinit()

       struct buf *bp = kmem_alloc(biosize(), KM_SLEEP);
       bioinit(bp);
       /* use buffer */

SEE ALSO

       biofini(9F), bioreset(9F), biosize(9F), getrbuf(9F), kmem_alloc(9F), buf(9S)

       Writing Device Drivers

SunOS 5.10							    20 Nov 1996 						       bioinit(9F)