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/* gdbm.h - The include file for dbm users. -*- c -*- */
/* This file is part of GDBM, the GNU data base manager, by Philip A. Nelson.
Copyright (C) 1990, 1991, 1993, 2011 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. If not, see <http://www.gnu.org/licenses/>.
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_
/* GDBM C++ support */
# if defined(__cplusplus) || defined(c_plusplus)
extern "C" {
# endif
/* 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_OPENMASK 7 /* Mask for the above. */
# define GDBM_FAST 0x010 /* Write fast! => No fsyncs. OBSOLETE. */
# define GDBM_SYNC 0x020 /* Sync operations to the disk. */
# define GDBM_NOLOCK 0x040 /* Don't do file locking operations. */
# define GDBM_NOMMAP 0x080 /* Don't use mmap(). */
# define GDBM_CLOEXEC 0x100 /* Close the underlying fd on exec(3) */
/* 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_SETCACHESIZE 1 /* Set the cache size. */
# define GDBM_FASTMODE 2 /* Toggle fast mode. OBSOLETE. */
# define GDBM_SETSYNCMODE 3 /* Turn on or off sync operations. */
# define GDBM_SETCENTFREE 4 /* Keep all free blocks in the header. */
# define GDBM_SETCOALESCEBLKS 5 /* Attempt to coalesce free blocks. */
# define GDBM_SETMAXMAPSIZE 6 /* Set maximum mapped memory size */
# define GDBM_SETMMAP 7 /* Toggle mmap mode */
/* Compatibility defines: */
# define GDBM_CACHESIZE GDBM_SETCACHESIZE
# define GDBM_SYNCMODE GDBM_SETSYNCMODE
# define GDBM_CENTFREE GDBM_SETCENTFREE
# define GDBM_COALESCEBLKS GDBM_SETCOALESCEBLKS
# define GDBM_GETFLAGS 8 /* Get gdbm_open flags */
# define GDBM_GETMMAP 9 /* Get mmap status */
# define GDBM_GETCACHESIZE 10 /* Get current cache side */
# define GDBM_GETSYNCMODE 11 /* Get synch mode */
# define GDBM_GETCENTFREE 12 /* Get "centfree" status */
# define GDBM_GETCOALESCEBLKS 13 /* Get free block coalesce status */
# define GDBM_GETMAXMAPSIZE 14 /* Get maximum mapped memory size */
# define GDBM_GETDBNAME 15 /* Return database file name */
/* The data and key structure. */
typedef struct {
char *dptr;
int dsize;
} datum;
/* The file information header. This is good enough for most applications. */
typedef struct gdbm_file_info *GDBM_FILE;
/* External variable, the gdbm build release string. */
extern const char *gdbm_version;
# define GDBM_VERSION_MAJOR 1
# define GDBM_VERSION_MINOR 10
# define GDBM_VERSION_PATCH 0
extern int const gdbm_version_number[3];
/* GDBM external functions. */
extern GDBM_FILE gdbm_open (const char *, int, int, int,
void (*)(const char *));
extern void gdbm_close (GDBM_FILE);
extern int gdbm_store (GDBM_FILE, datum, datum, int);
extern datum gdbm_fetch (GDBM_FILE, datum);
extern int gdbm_delete (GDBM_FILE, datum);
extern datum gdbm_firstkey (GDBM_FILE);
extern datum gdbm_nextkey (GDBM_FILE, datum);
extern int gdbm_reorganize (GDBM_FILE);
extern void gdbm_sync (GDBM_FILE);
extern int gdbm_exists (GDBM_FILE, datum);
extern int gdbm_setopt (GDBM_FILE, int, void *, int);
extern int gdbm_fdesc (GDBM_FILE);
extern int gdbm_export (GDBM_FILE, const char *, int, int);
extern int gdbm_import (GDBM_FILE, const char *, int);
# 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
# define GDBM_BYTE_SWAPPED 21
# define GDBM_BAD_FILE_OFFSET 22
# define GDBM_BAD_OPEN_FLAGS 23
# define GDBM_FILE_STAT_ERROR 24
# define GDBM_FILE_EOF 25
# define _GDBM_MIN_ERRNO 0
# define _GDBM_MAX_ERRNO GDBM_FILE_EOF
typedef int gdbm_error; /* For compatibilities sake. */
extern gdbm_error gdbm_errno;
extern const char * const gdbm_errlist[];
/* extra prototypes */
extern const char *gdbm_strerror (gdbm_error);
extern int gdbm_version_cmp (int const a[], int const b[]);
# if defined(__cplusplus) || defined(c_plusplus)
}
# endif
#endif