NAME

biofini − uninitialize a buffer structure

SYNOPSIS

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

INTERFACE LEVEL

Solaris DDI specific (Solaris DDI). 

ARGUMENTS

bp Pointer to the buffer header structure. 

DESCRIPTION

The biofini() function uninitializes a buf(9S) structure. If a buffer structure has been allocated and initialized using kmem_alloc(9F) and bioinit(9F) it needs to be uninitialized using biofini() before calling kmem_free(9F).  It is not necessary to call biofini() before freeing a buffer structure using freerbuf(9F) because freerbuf() will call biofini() directly. 

CONTEXT

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

EXAMPLES

struct buf ∗bp = kmem_alloc(biosize(), KM_SLEEP);
bioinit(bp);
/∗ use buffer ∗/
biofini(bp);
kmem_free(bp, biosize());

SEE ALSO

bioinit(9F), bioreset(9F), biosize(9F), freerbuf(9F), kmem_alloc(9F), kmem_free(9F), buf(9S)

Writing Device Drivers

SunOS 5.6  —  Last change: 20 Nov 1996