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gdbm.h
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/* gdbm.h - The include file for dbm users. */ /* This file is part of GDBM, the GNU data base manager, by Philip A. Nelson. Copyright (C) 1990, 1991, 1993 Free Software Foundation, Inc. GDBM is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. GDBM is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GDBM; see the file COPYING. If not, write to the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. You may contact the author by: e-mail: phil@cs.wwu.edu us-mail: Philip A. Nelson Computer Science Department Western Washington University Bellingham, WA 98226 *************************************************************************/ /* Protection for multiple includes. */ #ifndef _GDBM_H_ #define _GDBM_H_ /* Parameters to gdbm_open for READERS, WRITERS, and WRITERS who can create the database. */ #define GDBM_READER 0 /* A reader. */ #define GDBM_WRITER 1 /* A writer. */ #define GDBM_WRCREAT 2 /* A writer. Create the db if needed. */ #define GDBM_NEWDB 3 /* A writer. Always create a new db. */ #define GDBM_FAST 0x10 /* Write fast! => No fsyncs. OBSOLETE. */ #define GDBM_SYNC 0x20 /* Sync operations to the disk. */ #define GDBM_NOLOCK 0x40 /* Don't do file locking operations. */ /* Parameters to gdbm_store for simple insertion or replacement in the case that the key is already in the database. */ #define GDBM_INSERT 0 /* Never replace old data with new. */ #define GDBM_REPLACE 1 /* Always replace old data with new. */ /* Parameters to gdbm_setopt, specifing the type of operation to perform. */ #define GDBM_CACHESIZE 1 /* Set the cache size. */ #define GDBM_FASTMODE 2 /* Toggle fast mode. OBSOLETE. */ #define GDBM_SYNCMODE 3 /* Turn on or off sync operations. */ #define GDBM_CENTFREE 4 /* Keep all free blocks in the header. */ #define GDBM_COALESCEBLKS 5 /* Attempt to coalesce free blocks. */ /* The data and key structure. This structure is defined for compatibility. */ typedef struct { char *dptr; int dsize; } datum; /* The file information header. This is good enough for most applications. */ typedef struct {int dummy[10];} *GDBM_FILE; /* Determine if the C(++) compiler requires complete function prototype */ #ifndef __P #if defined(__STDC__) || defined(__cplusplus) || defined(c_plusplus) #define __P(x) x #else #define __P(x) () #endif #endif /* External variable, the gdbm build release string. */ extern char *gdbm_version; /* GDBM C++ support */ #if defined(__cplusplus) || defined(c_plusplus) extern "C" { #endif /* These are the routines! */ extern GDBM_FILE gdbm_open __P((char *, int, int, int, void (*)())); extern void gdbm_close __P((GDBM_FILE)); extern int gdbm_store __P((GDBM_FILE, datum, datum, int)); extern datum gdbm_fetch __P((GDBM_FILE, datum)); extern int gdbm_delete __P((GDBM_FILE, datum)); extern datum gdbm_firstkey __P((GDBM_FILE)); extern datum gdbm_nextkey __P((GDBM_FILE, datum)); extern int gdbm_reorganize __P((GDBM_FILE)); extern void gdbm_sync __P((GDBM_FILE)); extern int gdbm_exists __P((GDBM_FILE, datum)); extern int gdbm_setopt __P((GDBM_FILE, int, int *, int)); extern int gdbm_fdesc __P((GDBM_FILE)); #if defined(__cplusplus) || defined(c_plusplus) } #endif #define GDBM_NO_ERROR 0 #define GDBM_MALLOC_ERROR 1 #define GDBM_BLOCK_SIZE_ERROR 2 #define GDBM_FILE_OPEN_ERROR 3 #define GDBM_FILE_WRITE_ERROR 4 #define GDBM_FILE_SEEK_ERROR 5 #define GDBM_FILE_READ_ERROR 6 #define GDBM_BAD_MAGIC_NUMBER 7 #define GDBM_EMPTY_DATABASE 8 #define GDBM_CANT_BE_READER 9 #define GDBM_CANT_BE_WRITER 10 #define GDBM_READER_CANT_DELETE 11 #define GDBM_READER_CANT_STORE 12 #define GDBM_READER_CANT_REORGANIZE 13 #define GDBM_UNKNOWN_UPDATE 14 #define GDBM_ITEM_NOT_FOUND 15 #define GDBM_REORGANIZE_FAILED 16 #define GDBM_CANNOT_REPLACE 17 #define GDBM_ILLEGAL_DATA 18 #define GDBM_OPT_ALREADY_SET 19 #define GDBM_OPT_ILLEGAL 20 typedef int gdbm_error; /* For compatibilities sake. */ extern gdbm_error gdbm_errno; /* extra prototypes */ /* GDBM C++ support */ #if defined(__cplusplus) || defined(c_plusplus) extern "C" { #endif extern char *gdbm_strerror __P((gdbm_error)); #if defined(__cplusplus) || defined(c_plusplus) } #endif #endif