/* * 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. *//* $Locker:  $ * $Log: rf_parityscan.h,v $ * Revision 1.14  1996/07/05  18:01:12  jimz * don't make parity protos ndef KERNEL * * Revision 1.13  1996/06/20  17:41:43  jimz * change decl for VerifyParity * * Revision 1.12  1996/06/20  15:38:39  jimz * renumber parityscan return codes * * Revision 1.11  1996/06/19  22:23:01  jimz * parity verification is now a layout-configurable thing * not all layouts currently support it (correctly, anyway) * * Revision 1.10  1996/06/09  02:36:46  jimz * lots of little crufty cleanup- fixup whitespace * issues, comment #ifdefs, improve typing in some * places (esp size-related) * * Revision 1.9  1996/06/07  21:33:04  jimz * begin using consistent types for sector numbers, * stripe numbers, row+col numbers, recon unit numbers * * Revision 1.8  1996/06/02  17:31:48  jimz * Moved a lot of global stuff into array structure, where it belongs. * Fixed up paritylogging, pss modules in this manner. Some general * code cleanup. Removed lots of dead code, some dead files. * * Revision 1.7  1996/05/31  22:26:54  jimz * fix a lot of mapping problems, memory allocation problems * found some weird lock issues, fixed 'em * more code cleanup * * Revision 1.6  1996/05/24  22:17:04  jimz * continue code + namespace cleanup * typed a bunch of flags * * Revision 1.5  1996/05/24  04:28:55  jimz * release cleanup ckpt * * Revision 1.4  1996/05/23  21:46:35  jimz * checkpoint in code cleanup (release prep) * lots of types, function names have been fixed * * Revision 1.3  1996/05/18  19:51:34  jimz * major code cleanup- fix syntax, make some types consistent, * add prototypes, clean out dead code, et cetera * * Revision 1.2  1995/11/30  16:20:46  wvcii * added copyright info * */#ifndef _RF__RF_PARITYSCAN_H_#define _RF__RF_PARITYSCAN_H_#include "rf_types.h"#include "rf_alloclist.h"int rf_RewriteParity(RF_Raid_t *raidPtr);int rf_VerifyParityBasic(RF_Raid_t *raidPtr, RF_RaidAddr_t raidAddr,	RF_PhysDiskAddr_t *parityPDA, int correct_it, RF_RaidAccessFlags_t flags);int rf_VerifyParity(RF_Raid_t *raidPtr, RF_AccessStripeMap_t *stripeMap,	int correct_it, RF_RaidAccessFlags_t flags);int rf_TryToRedirectPDA(RF_Raid_t *raidPtr, RF_PhysDiskAddr_t *pda, int parity);int rf_VerifyDegrModeWrite(RF_Raid_t *raidPtr, RF_AccessStripeMapHeader_t *asmh);RF_DagHeader_t *rf_MakeSimpleDAG(RF_Raid_t *raidPtr, int nNodes, int bytesPerSU,	char *databuf, int (*doFunc)(), int (*undoFunc)(), char *name,	RF_AllocListElem_t *alloclist, RF_RaidAccessFlags_t flags, int priority);#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_ */