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105 lines
3.2 KiB
C
105 lines
3.2 KiB
C
/*
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* PROGRAM: JRD Access Method
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* MODULE: old.h
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* DESCRIPTION:
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*
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* The contents of this file are subject to the Interbase Public
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* License Version 1.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy
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* of the License at http://www.Inprise.com/IPL.html
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*
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* Software distributed under the License is distributed on an
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* "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express
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* or implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code was created by Inprise Corporation
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* and its predecessors. Portions created by Inprise Corporation are
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* Copyright (C) Inprise Corporation.
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*
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* All Rights Reserved.
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* Contributor(s): ______________________________________.
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*/
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#ifndef _JRD_OLD_H_
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#define _JRD_OLD_H_
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#include "../jrd/common.h"
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#define OLD_VERSION1 1
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#define OLD_VERSION OLD_VERSION1
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#define MAX_OLDBUFLEN 64000
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/* OLD block buffer header */
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typedef struct old_hdr {
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UCHAR oh_type; /* type of record */
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USHORT oh_hdr_len; /* Length of the block buffer */
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SLONG oh_seqno; /* seqno of the block */
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SLONG oh_hdr_timestamp[2]; /* When this buffer was written */
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SCHAR oh_buf[1];
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} *OLD_HDR;
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#define OLD_HEADER 1
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#define OLD_DATA 2
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#define OLD_ERR 253
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#define OLD_EOF 254
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#define OLD_EOD 255
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#define OLD_HDROVHD OFFSETA (OLD_HDR, oh_buf)
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#define OLD_TAILOVHD sizeof(SSHORT)
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#define OLD_OVHD OLD_HDROVHD + OLD_TAILOVHD
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#define OLD_HEADER_SIZE 512 /* make it 256 later */
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/* OLD buffer block */
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typedef struct oldblk {
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SLONG ob_cur_offset;
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SLONG ob_cur_seqno;
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struct old_hdr *ob_hdr;
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} *OLDBLK;
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/* OLD handle, used in the API calls.*/
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typedef struct old {
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SCHAR *old_db; /* name of database */
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SLONG old_fd; /* File descriptor for the OLD lock file */
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USHORT old_dump_id;
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ULONG old_log_seqno; /* log seqno of OLD */
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ULONG old_log_offset; /* log offset of OLD */
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ULONG old_log_p_offset; /* log p_offset of OLD */
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ULONG old_db_page_size;
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SSHORT old_num_files; /* number of files to be used */
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SCHAR **old_files; /* list of files passed in */
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SSHORT old_cur_file; /* current file being written to */
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SSHORT old_file_seqno; /* file seqno being written to */
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SSHORT old_rec_size; /* size of each record */
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ULONG old_file_size; /* max file size */
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SLONG old_cur_size; /* current file size */
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SLONG old_cur_seqno; /* used during read processing */
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int old_length; /* length of the OLD segement */
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OLDBLK old_block;
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} *OLD;
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/* OnLine Dump header page info */
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typedef struct hdr_page {
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USHORT hp_file_seqno; /* Sequence number of current file */
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ULONG hp_start_block; /* start block number */
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ULONG hp_file_size; /* max size of file */
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ULONG hp_log_seqno; /* old start log seqno */
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ULONG hp_log_offset; /* old start log offset */
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ULONG hp_log_p_offset; /* old start log offset */
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USHORT hp_db_page_size; /* database page size */
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USHORT hp_dump_id; /* dump id */
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USHORT hp_rec_size;
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USHORT hp_version; /* OnLine Dump Version */
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USHORT hp_length; /* length of file name */
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SCHAR hp_db[1]; /* database name */
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} *OLD_HDR_PAGE;
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#endif /* _JRD_OLD_H_ */
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