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85 lines
2.2 KiB
C++
85 lines
2.2 KiB
C++
/*
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* PROGRAM: JRD Access Method
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* MODULE: ext.h
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* DESCRIPTION: External file access definitions
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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_EXT_H
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#define JRD_EXT_H
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#include <stdio.h>
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namespace Jrd {
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// External file access block
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class ExternalFile : public pool_alloc_rpt<SCHAR, type_ext>
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{
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public:
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#ifdef VMS
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Format* ext_format; // External format
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#endif
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//UCHAR* ext_stuff; // Random stuff
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USHORT ext_flags; // Misc and cruddy flags
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USHORT ext_tra_cnt; // How many transactions used the file
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#ifdef VMS
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int ext_ifi; // Internal file identifier
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int ext_isi; // Internal stream (default)
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#else
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FILE* ext_ifi; // Internal file identifier
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//int* ext_isi; // Internal stream (default)
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#endif
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//USHORT ext_record_length; // Record length
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#ifdef VMS
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USHORT ext_file_type; // File type
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USHORT ext_index_count; // Number of indices
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UCHAR* ext_indices; // Index descriptions
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UCHAR ext_dbkey[8]; // DBKEY
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#endif
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char ext_filename[1];
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};
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//const int EXT_opened = 1; // File has been opened
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const int EXT_eof = 2; // Positioned at EOF
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const int EXT_readonly = 4; // File could only be opened for read
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const int EXT_last_read = 8; // last operation was read
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const int EXT_last_write = 16; // last operation was write
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#ifdef VMS
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struct irsb_ext
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{
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USHORT irsb_flags; // flags (a whole word!)
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UCHAR irsb_ext_dbkey[8]; // DBKEY
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};
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#endif
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// Overload record parameter block with external file stuff
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#ifdef VMS
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#define rpb_ext_isi rpb_f_page
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#define rpb_ext_dbkey rpb_b_page
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#endif
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} //namespace Jrd
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#endif // JRD_EXT_H
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