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81 lines
2.6 KiB
81 lines
2.6 KiB
/*
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* Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*
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* Further, this software is distributed without any warranty that it is
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* free of the rightful claim of any third person regarding infringement
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* or the like. Any license provided herein, whether implied or
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* otherwise, applies only to this software file. Patent licenses, if
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* any, provided herein do not apply to combinations of this program with
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* other software, or any other product whatsoever.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write the Free Software Foundation, Inc., 59
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* Temple Place - Suite 330, Boston MA 02111-1307, USA.
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*
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* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
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* Mountain View, CA 94043, or:
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*
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* http://www.sgi.com
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*
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* For further information regarding this notice, see:
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*
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* http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
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*/
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#ifndef __XFS_LOG_RECOVER_H__
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#define __XFS_LOG_RECOVER_H__
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/*
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* Macros, structures, prototypes for internal log manager use.
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*/
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#define XLOG_RHASH_BITS 4
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#define XLOG_RHASH_SIZE 16
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#define XLOG_RHASH_SHIFT 2
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#define XLOG_RHASH(tid) \
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((((__uint32_t)tid)>>XLOG_RHASH_SHIFT) & (XLOG_RHASH_SIZE-1))
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#define XLOG_MAX_REGIONS_IN_ITEM (XFS_MAX_BLOCKSIZE / XFS_BLI_CHUNK / 2 + 1)
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/*
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* item headers are in ri_buf[0]. Additional buffers follow.
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*/
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typedef struct xlog_recover_item {
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struct xlog_recover_item *ri_next;
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struct xlog_recover_item *ri_prev;
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int ri_type;
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int ri_cnt; /* count of regions found */
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int ri_total; /* total regions */
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xfs_log_iovec_t *ri_buf; /* ptr to regions buffer */
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} xlog_recover_item_t;
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struct xlog_tid;
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typedef struct xlog_recover {
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struct xlog_recover *r_next;
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xlog_tid_t r_log_tid; /* log's transaction id */
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xfs_trans_header_t r_theader; /* trans header for partial */
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int r_state; /* not needed */
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xfs_lsn_t r_lsn; /* xact lsn */
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xlog_recover_item_t *r_itemq; /* q for items */
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} xlog_recover_t;
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#define ITEM_TYPE(i) (*(ushort *)(i)->ri_buf[0].i_addr)
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/*
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* This is the number of entries in the l_buf_cancel_table used during
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* recovery.
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*/
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#define XLOG_BC_TABLE_SIZE 64
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#define XLOG_RECOVER_PASS1 1
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#define XLOG_RECOVER_PASS2 2
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#endif /* __XFS_LOG_RECOVER_H__ */
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