Return to global_bltin.h CVS log

Up to [Coherent Logic Development] / freem / src

Annotation of freem/src/global_bltin.h, revision 1.8

1.1       snw         1: /*
1.8     ! snw         2:  *   $Id: global_bltin.h,v 1.7 2025/04/08 21:41:13 snw Exp $
1.1       snw         3:  *    built-in global handler header
                      4:  *
                      5:  *  
1.2       snw         6:  *   Author: Serena Willis <snw@coherent-logic.com>
1.1       snw         7:  *    Copyright (C) 1998 MUG Deutschland
1.3       snw         8:  *    Copyright (C) 2020, 2025 Coherent Logic Development LLC
1.1       snw         9:  *
                     10:  *
                     11:  *   This file is part of FreeM.
                     12:  *
                     13:  *   FreeM is free software: you can redistribute it and/or modify
                     14:  *   it under the terms of the GNU Affero Public License as published by
                     15:  *   the Free Software Foundation, either version 3 of the License, or
                     16:  *   (at your option) any later version.
                     17:  *
                     18:  *   FreeM is distributed in the hope that it will be useful,
                     19:  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
                     20:  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     21:  *   GNU Affero Public License for more details.
                     22:  *
                     23:  *   You should have received a copy of the GNU Affero Public License
                     24:  *   along with FreeM.  If not, see <https://www.gnu.org/licenses/>.
                     25:  *
1.4       snw        26:  *   $Log: global_bltin.h,v $
1.8     ! snw        27:  *   Revision 1.7  2025/04/08 21:41:13  snw
        !            28:  *   Make insert, update, and splitp global handler functions take a ptr to a global_handle instead of a file descriptor
        !            29:  *
1.7       snw        30:  *   Revision 1.6  2025/04/08 20:00:56  snw
                     31:  *   Global handler now uses a header file and maintains the last journaling transaction ID
                     32:  *
1.6       snw        33:  *   Revision 1.5  2025/04/08 16:46:11  snw
                     34:  *   Add global file header and offsets
                     35:  *
1.5       snw        36:  *   Revision 1.4  2025/04/08 14:39:21  snw
                     37:  *   Initial work on global handler refactor
                     38:  *
1.4       snw        39:  *   Revision 1.3  2025/03/09 19:14:25  snw
                     40:  *   First phase of REUSE compliance and header reformat
                     41:  *
1.3       snw        42:  *
                     43:  * SPDX-FileCopyrightText:  (C) 2025 Coherent Logic Development LLC
                     44:  * SPDX-License-Identifier: AGPL-3.0-or-later
1.1       snw        45:  **/
1.4       snw        46: 
                     47: #if !defined(__FREEM_GLOBAL_BLTIN_H)
                     48: # define __FREEM_GLOBAL_BLTIN_H
                     49: 
1.5       snw        50: #include "version.h"
                     51: 
                     52: #define GBL_FORMAT_VERSION 2
                     53: #define GBL_MAGIC "FRMGL"
                     54: 
1.6       snw        55: #define GBL_HDR_OK 0
                     56: #define GBL_HDR_NOTOPEN 1
                     57: #define GBL_HDR_BADMAGIC 2
                     58: #define GBL_HDR_BADVERSION 3
                     59: #define GBL_HDR_BADBLOCKSIZE 4
                     60: 
1.5       snw        61: typedef struct global_header {
                     62:     
                     63:     char magic[5]; /* FRMGL */
                     64:     int format_version;
                     65:     char host_triplet[40];
1.8     ! snw        66:     char host_id[256];
        !            67:     
1.5       snw        68:     unsigned long block_size;
                     69:     unsigned long last_transaction_id;
                     70: 
                     71:     long created;
                     72:     long last_backup;
                     73:     
                     74: } global_header;
                     75: 
1.4       snw        76: typedef struct global_handle {
                     77: 
                     78:     int fd; /* file descriptor */
1.5       snw        79: 
                     80:     global_header header;
1.4       snw        81:     long use_count; /* how many times has it been accessed? */
                     82:     long age;
                     83:     short opened;
                     84:     short locked;
                     85:     unsigned long last_block;
1.5       snw        86:     
1.4       snw        87:     short fast_path;
                     88:     
                     89:     char global_name[256];
                     90:     char global_path[4096];
                     91: 
                     92:     
                     93:     struct global_handle *next;   
                     94:     
                     95: } global_handle;
                     96: 
                     97: extern global_handle *global_handles_head;
                     98: 
1.7       snw        99: 
                    100: extern inline long gbl_path(char *key, char *buf);
                    101: extern int gbl_lock(global_handle *g, int type);
                    102: extern int gbl_unlock(global_handle *g);
                    103: extern void gbl_close(global_handle *g);
                    104: extern void gbl_close_all(void);
                    105: extern int gbl_write_initial_header(global_handle *g);
                    106: extern int gbl_write_header(global_handle *g, global_header *hdr);
                    107: extern int gbl_read_header(global_handle *g, global_header *h);
                    108: extern int gbl_update_tid(global_handle *g);
                    109: extern int gbl_create(global_handle *g);
                    110: extern short gbl_open(global_handle *g, short action);
                    111: extern global_handle *gbl_handle(char *key);
                    112: 
1.4       snw       113: #endif