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

NAME

bioinit - initialize a buffer structure

SYNOPSIS

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

void bioinit(struct buf *bp);

INTERFACE LEVEL

illumos DDI specific (illumos 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

November 20, 1996 BIOINIT(9F)