BP_COPYOUT(9F) Kernel Functions for Drivers BP_COPYOUT(9F)
NAME
bp_copyout - copy from a driver buffer into a
buf(9S)SYNOPSIS
#include <sys/types.h>
#include <sys/buf.h>
int bp_copyout(
void *driverbuf,
struct buf *bp,
offset_t offset,
size_t size);
INTERFACE LEVEL
Architecture independent level 1 (DDI/DKI).
PARAMETERS
bp Pointer to the buffer header structure to copy to.
driverbuf Driver buffer to copy from.
offset Offset into
bp where to start copying.
size Size of copy.
DESCRIPTION
The
bp_copyout() function copies
size bytes starting from the driver
buffer
driverbuf to
offset bytes into the memory associated with
bp.
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_copyout() function can be called from user or kernel context
only.
SEE ALSO
bp_copyin(9F),
bp_mapin(9F),
bp_mapout(9F),
ddi_copyout(9F),
buf(9S) October 16, 2007 BP_COPYOUT(9F)
