1 /* 2 * Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved. 3 * 4 * This program is free software; you can redistribute it and/or modify it 5 * under the terms of version 2 of the GNU General Public License as 6 * published by the Free Software Foundation. 7 * 8 * This program is distributed in the hope that it would be useful, but 9 * WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 11 * 12 * Further, this software is distributed without any warranty that it is 13 * free of the rightful claim of any third person regarding infringement 14 * or the like. Any license provided herein, whether implied or 15 * otherwise, applies only to this software file. Patent licenses, if 16 * any, provided herein do not apply to combinations of this program with 17 * other software, or any other product whatsoever. 18 * 19 * You should have received a copy of the GNU General Public License along 20 * with this program; if not, write the Free Software Foundation, Inc., 59 21 * Temple Place - Suite 330, Boston MA 02111-1307, USA. 22 * 23 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, 24 * Mountain View, CA 94043, or: 25 * 26 * http://www.sgi.com 27 * 28 * For further information regarding this notice, see: 29 * 30 * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/ 31 */ 32 #ifndef __XFS_LOG_RECOVER_H__ 33 #define __XFS_LOG_RECOVER_H__ 34 35 /* 36 * Macros, structures, prototypes for internal log manager use. 37 */ 38 39 #define XLOG_RHASH_BITS 4 40 #define XLOG_RHASH_SIZE 16 41 #define XLOG_RHASH_SHIFT 2 42 #define XLOG_RHASH(tid) \ 43 ((((__uint32_t)tid)>>XLOG_RHASH_SHIFT) & (XLOG_RHASH_SIZE-1)) 44 45 #define XLOG_MAX_REGIONS_IN_ITEM (XFS_MAX_BLOCKSIZE / XFS_BLI_CHUNK / 2 + 1) 46 47 48 /* 49 * item headers are in ri_buf[0]. Additional buffers follow. 50 */ 51 typedef struct xlog_recover_item { 52 struct xlog_recover_item *ri_next; 53 struct xlog_recover_item *ri_prev; 54 int ri_type; 55 int ri_cnt; /* count of regions found */ 56 int ri_total; /* total regions */ 57 xfs_log_iovec_t *ri_buf; /* ptr to regions buffer */ 58 } xlog_recover_item_t; 59 60 struct xlog_tid; 61 typedef struct xlog_recover { 62 struct xlog_recover *r_next; 63 xlog_tid_t r_log_tid; /* log's transaction id */ 64 xfs_trans_header_t r_theader; /* trans header for partial */ 65 int r_state; /* not needed */ 66 xfs_lsn_t r_lsn; /* xact lsn */ 67 xlog_recover_item_t *r_itemq; /* q for items */ 68 } xlog_recover_t; 69 70 #define ITEM_TYPE(i) (*(ushort *)(i)->ri_buf[0].i_addr) 71 72 /* 73 * This is the number of entries in the l_buf_cancel_table used during 74 * recovery. 75 */ 76 #define XLOG_BC_TABLE_SIZE 64 77 78 #define XLOG_RECOVER_PASS1 1 79 #define XLOG_RECOVER_PASS2 2 80 81 #endif /* __XFS_LOG_RECOVER_H__ */ 82