opensolaris man page for geterror

geterror(9F)						   Kernel Functions for Drivers 					      geterror(9F)

NAME
       geterror - return I/O error

SYNOPSIS
       #include <sys/types.h>
       #include <sys/buf.h>
       #include <sys/ddi.h>

       int geterror(struct buf *bp);

INTERFACE LEVEL
       Architecture independent level 1 (DDI/DKI).

PARAMETERS
       bp    Pointer to a buf(9S) structure.

DESCRIPTION
       The geterror() function returns the error number  from the error field of the  buffer header structure.

RETURN VALUES
       An error number indicating the error condition of the I/O request is returned. If the I/O request completes successfully, 0 is returned.

CONTEXT
       The geterror() function can be called from user, interrupt, or kernel context.

SEE ALSO
       buf(9S)

       Writing Device Drivers

SunOS 5.11							    16 Jan 2006 						      geterror(9F)