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

bioinit - initialize a buffer structure

#include <sys/ddi.h>
#include <sys/sunddi.h>
void bioinit(struct buf *bp);

illumos DDI specific (illumos DDI).

bp
Pointer to the buffer header structure.

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.

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

Example 1 Using bioinit()


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

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

Writing Device Drivers

November 20, 1996 OmniOS