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| Current Path : /usr/include/ |
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| Current File : //usr/include/gdbm.h |
/* 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 29
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