xref: /illumos-gate/usr/src/man/man9f/bioinit.9f (revision bbf21555)
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BIOINIT 9F "Nov 20, 1996"
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