bp_copyin(9f)

1bp_copyin(9F)            Kernel Functions for Drivers            bp_copyin(9F)
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NAME

6       bp_copyin - copy from a buf(9S) into a driver buffer
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SYNOPSIS

9       #include <sys/types.h>
10       #include <sys/buf.h>
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15       int bp_copyin(struct buf *bp, void *driverbuf, offset_t offset,
16            size_t size);
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INTERFACE LEVEL

20       Architecture independent level 1 (DDI/DKI).
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PARAMETERS

23       bp           Pointer to the buffer header structure to copy from.
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26       driverbuf    Driver buffer to copy to.
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29       offset       Offset into bp where to start copying.
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32       size         Size of copy.
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DESCRIPTION

36       The  bp_copyin()  function copies size bytes into the memory associated
37       with bp to the destination driver buffer  driverbuf.  The  offset  only
38       applies to bp.
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RETURN VALUES

41       Under  normal  conditions, 0 is returned to indicate a successful copy.
42       Otherwise, -1 is returned if bp references invalid pages.
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CONTEXT

45       The bp_copyin() function can be called  from  user  or  kernel  context
46       only.
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