BP_COPYIN(9F) Kernel Functions for Drivers BP_COPYIN(9F)
NAME
bp_copyin - copy from a
buf(9S) into a driver buffer
SYNOPSIS
#include <sys/types.h>
#include <sys/buf.h>
int bp_copyin(
struct buf *bp,
void *driverbuf,
offset_t offset,
size_t size);
INTERFACE LEVEL
Architecture independent level 1 (DDI/DKI).
PARAMETERS
bp Pointer to the buffer header structure to copy from.
driverbuf Driver buffer to copy to.
offset Offset into
bp where to start copying.
size Size of copy.
DESCRIPTION
The
bp_copyin() function copies
size bytes into the memory associated
with
bp to the destination driver buffer
driverbuf. The
offset only
applies to
bp.
RETURN VALUES
Under normal conditions, 0 is returned to indicate a successful copy.
Otherwise, -1 is returned if
bp references invalid pages.
CONTEXT
The
bp_copyin() function can be called from user or kernel context
only.
SEE ALSO
bp_copyout(9F),
bp_mapin(9F),
bp_mapout(9F),
ddi_copyout(9F),
buf(9S) October 16, 2007 BP_COPYIN(9F)
