1 /* $OpenBSD: rf_parityscan.h,v 1.3 2002/12/16 07:01:04 tdeval Exp $ */ 2 /* $NetBSD: rf_parityscan.h,v 1.3 1999/02/05 00:06:14 oster Exp $ */ 3 4 /* 5 * Copyright (c) 1995 Carnegie-Mellon University. 6 * All rights reserved. 7 * 8 * Author: Mark Holland 9 * 10 * Permission to use, copy, modify and distribute this software and 11 * its documentation is hereby granted, provided that both the copyright 12 * notice and this permission notice appear in all copies of the 13 * software, derivative works or modified versions, and any portions 14 * thereof, and that both notices appear in supporting documentation. 15 * 16 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 17 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 18 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 19 * 20 * Carnegie Mellon requests users of this software to return to 21 * 22 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 23 * School of Computer Science 24 * Carnegie Mellon University 25 * Pittsburgh PA 15213-3890 26 * 27 * any improvements or extensions that they make and grant Carnegie the 28 * rights to redistribute these changes. 29 */ 30 31 #ifndef _RF__RF_PARITYSCAN_H_ 32 #define _RF__RF_PARITYSCAN_H_ 33 34 #include "rf_types.h" 35 #include "rf_alloclist.h" 36 37 int rf_RewriteParity(RF_Raid_t *); 38 int rf_VerifyParityBasic(RF_Raid_t *, RF_RaidAddr_t, RF_PhysDiskAddr_t *, int, 39 RF_RaidAccessFlags_t); 40 int rf_VerifyParity(RF_Raid_t *, RF_AccessStripeMap_t *, int, 41 RF_RaidAccessFlags_t); 42 int rf_TryToRedirectPDA(RF_Raid_t *, RF_PhysDiskAddr_t *, int); 43 int rf_VerifyDegrModeWrite(RF_Raid_t *, RF_AccessStripeMapHeader_t *); 44 RF_DagHeader_t *rf_MakeSimpleDAG(RF_Raid_t *, int, int, char *, 45 int (*) (RF_DagNode_t *), int (*) (RF_DagNode_t *), char *, 46 RF_AllocListElem_t *, RF_RaidAccessFlags_t, int); 47 48 #define RF_DO_CORRECT_PARITY 1 49 #define RF_DONT_CORRECT_PARITY 0 50 51 /* 52 * Return vals for VerifyParity operation. 53 * 54 * Ordering is important here. 55 */ 56 #define RF_PARITY_OKAY 0 /* Or no parity information. */ 57 #define RF_PARITY_CORRECTED 1 58 #define RF_PARITY_BAD 2 59 #define RF_PARITY_COULD_NOT_CORRECT 3 60 #define RF_PARITY_COULD_NOT_VERIFY 4 61 62 #endif /* !_RF__RF_PARITYSCAN_H_ */ 63