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/* $OpenBSD: rf_parityscan.h,v 1.3 2002/12/16 07:01:04 tdeval Exp $ */
/* $NetBSD: rf_parityscan.h,v 1.3 1999/02/05 00:06:14 oster Exp $ */
/*
* Copyright (c) 1995 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Mark Holland
*
* Permission to use, copy, modify and distribute this software and
* its documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
#ifndef _RF__RF_PARITYSCAN_H_
#define _RF__RF_PARITYSCAN_H_
#include "rf_types.h"
#include "rf_alloclist.h"
int rf_RewriteParity(RF_Raid_t *);
int rf_VerifyParityBasic(RF_Raid_t *, RF_RaidAddr_t, RF_PhysDiskAddr_t *, int,
RF_RaidAccessFlags_t);
int rf_VerifyParity(RF_Raid_t *, RF_AccessStripeMap_t *, int,
RF_RaidAccessFlags_t);
int rf_TryToRedirectPDA(RF_Raid_t *, RF_PhysDiskAddr_t *, int);
int rf_VerifyDegrModeWrite(RF_Raid_t *, RF_AccessStripeMapHeader_t *);
RF_DagHeader_t *rf_MakeSimpleDAG(RF_Raid_t *, int, int, char *,
int (*) (RF_DagNode_t *), int (*) (RF_DagNode_t *), char *,
RF_AllocListElem_t *, RF_RaidAccessFlags_t, int);
#define RF_DO_CORRECT_PARITY 1
#define RF_DONT_CORRECT_PARITY 0
/*
* Return vals for VerifyParity operation.
*
* Ordering is important here.
*/
#define RF_PARITY_OKAY 0 /* Or no parity information. */
#define RF_PARITY_CORRECTED 1
#define RF_PARITY_BAD 2
#define RF_PARITY_COULD_NOT_CORRECT 3
#define RF_PARITY_COULD_NOT_VERIFY 4
#endif /* !_RF__RF_PARITYSCAN_H_ */
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