BP_COPYIN(9F) Kernel Functions for Drivers BP_COPYIN(9F)
bp_copyin - copy from a buf(9S) into a driver buffer
#include <sys/types.h>
#include <sys/buf.h>
int bp_copyin(struct buf *bp, void *driverbuf, offset_t offset,
size_t size);
Architecture independent level 1 (DDI/DKI).
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.
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.
Under normal conditions, 0 is returned to indicate a successful copy.
Otherwise, -1 is returned if bp references invalid pages.
The bp_copyin() function can be called from user or kernel context
only.
bp_copyout(9F), bp_mapin(9F), bp_mapout(9F), ddi_copyout(9F), buf(9S)
October 16, 2007 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)