trustbridge/nss-cmake-static: nss/lib/dbm/src/h

annotate nss/lib/dbm/src/h_page.c @ 4:b513267f632f tip

Build DBM module

author	Andre Heinecke <andre.heinecke@intevation.de>
date	Tue, 05 Aug 2014 18:58:03 +0200
parents	150b72113545
children

rev	line source
3 150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1 /*-
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	2 * Copyright (c) 1990, 1993, 1994
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	3 * The Regents of the University of California. All rights reserved.
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	4 *
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	5 * This code is derived from software contributed to Berkeley by
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	6 * Margo Seltzer.
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	7 *
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	8 * Redistribution and use in source and binary forms, with or without
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	9 * modification, are permitted provided that the following conditions
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	10 * are met:
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	11 * 1. Redistributions of source code must retain the above copyright
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	12 * notice, this list of conditions and the following disclaimer.
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	13 * 2. Redistributions in binary form must reproduce the above copyright
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	14 * notice, this list of conditions and the following disclaimer in the
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	15 * documentation and/or other materials provided with the distribution.
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	16 * 3. *REMOVED* - see
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	17 * ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	18 * 4. Neither the name of the University nor the names of its contributors
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	19 * may be used to endorse or promote products derived from this software
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	20 * without specific prior written permission.
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	21 *
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	32 * SUCH DAMAGE.
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	33 */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	34
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	35 #if defined(unix)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	36 #define MY_LSEEK lseek
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	37 #else
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	38 #define MY_LSEEK new_lseek
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	39 extern long new_lseek(int fd, long pos, int start);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	40 #endif
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	41
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	42 #if defined(LIBC_SCCS) && !defined(lint)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	43 static char sccsid[] = "@(#)hash_page.c 8.7 (Berkeley) 8/16/94";
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	44 #endif /* LIBC_SCCS and not lint */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	45
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	46 /*
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	47 * PACKAGE: hashing
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	48 *
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	49 * DESCRIPTION:
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	50 * Page manipulation for hashing package.
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	51 *
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	52 * ROUTINES:
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	53 *
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	54 * External
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	55 * __get_page
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	56 * __add_ovflpage
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	57 * Internal
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	58 * overflow_page
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	59 * open_temp
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	60 */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	61 #ifndef macintosh
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	62 #include <sys/types.h>
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	63 #endif
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	64
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	65 #if defined(macintosh)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	66 #include <unistd.h>
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	67 #endif
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	68
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	69 #include <errno.h>
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	70 #include <fcntl.h>
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	71 #if defined(_WIN32) \|\| defined(_WINDOWS)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	72 #include <io.h>
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	73 #endif
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	74 #include <signal.h>
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	75 #include <stdio.h>
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	76 #include <stdlib.h>
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	77 #include <string.h>
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	78
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	79 #if !defined(_WIN32) && !defined(_WINDOWS) && !defined(macintosh)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	80 #include <unistd.h>
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	81 #endif
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	82
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	83 #include <assert.h>
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	84
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	85 #include "mcom_db.h"
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	86 #include "hash.h"
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	87 #include "page.h"
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	88 /* #include "extern.h" */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	89
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	90 extern int mkstempflags(char *path, int extraFlags);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	91
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	92 static uint32 fetch_bitmap __P((HTAB , uint32));
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	93 static uint32 first_free __P((uint32));
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	94 static int open_temp __P((HTAB *));
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	95 static uint16 overflow_page __P((HTAB *));
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	96 static void squeeze_key __P((uint16 , const DBT , const DBT *));
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	97 static int ugly_split
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	98 __P((HTAB , uint32, BUFHEAD , BUFHEAD *, int, int));
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	99
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	100 #define PAGE_INIT(P) { \
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	101 ((uint16 *)(P))[0] = 0; \
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	102 ((uint16 )(P))[1] = hashp->BSIZE - 3 sizeof(uint16); \
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	103 ((uint16 *)(P))[2] = hashp->BSIZE; \
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	104 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	105
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	106 /* implement a new lseek using lseek that
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	107 * writes zero's when extending a file
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	108 * beyond the end.
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	109 */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	110 long new_lseek(int fd, long offset, int origin)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	111 {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	112 long cur_pos=0;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	113 long end_pos=0;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	114 long seek_pos=0;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	115
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	116 if(origin == SEEK_CUR)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	117 {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	118 if(offset < 1)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	119 return(lseek(fd, offset, SEEK_CUR));
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	120
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	121 cur_pos = lseek(fd, 0, SEEK_CUR);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	122
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	123 if(cur_pos < 0)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	124 return(cur_pos);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	125 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	126
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	127 end_pos = lseek(fd, 0, SEEK_END);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	128 if(end_pos < 0)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	129 return(end_pos);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	130
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	131 if(origin == SEEK_SET)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	132 seek_pos = offset;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	133 else if(origin == SEEK_CUR)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	134 seek_pos = cur_pos + offset;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	135 else if(origin == SEEK_END)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	136 seek_pos = end_pos + offset;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	137 else
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	138 {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	139 assert(0);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	140 return(-1);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	141 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	142
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	143 /* the seek position desired is before the
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	144 * end of the file. We don't need
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	145 * to do anything special except the seek.
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	146 */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	147 if(seek_pos <= end_pos)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	148 return(lseek(fd, seek_pos, SEEK_SET));
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	149
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	150 /* the seek position is beyond the end of the
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	151 * file. Write zero's to the end.
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	152 *
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	153 * we are already at the end of the file so
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	154 * we just need to "write()" zeros for the
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	155 * difference between seek_pos-end_pos and
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	156 * then seek to the position to finish
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	157 * the call
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	158 */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	159 {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	160 char buffer[1024];
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	161 long len = seek_pos-end_pos;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	162 memset(&buffer, 0, 1024);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	163 while(len > 0)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	164 {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	165 write(fd, (char*)&buffer, (size_t)(1024 > len ? len : 1024));
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	166 len -= 1024;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	167 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	168 return(lseek(fd, seek_pos, SEEK_SET));
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	169 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	170
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	171 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	172
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	173 /*
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	174 * This is called AFTER we have verified that there is room on the page for
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	175 * the pair (PAIRFITS has returned true) so we go right ahead and start moving
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	176 * stuff on.
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	177 */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	178 static void
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	179 putpair(char p, const DBT key, DBT * val)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	180 {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	181 register uint16 *bp, n, off;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	182
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	183 bp = (uint16 *)p;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	184
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	185 /* Enter the key first. */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	186 n = bp[0];
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	187
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	188 off = OFFSET(bp) - key->size;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	189 memmove(p + off, key->data, key->size);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	190 bp[++n] = off;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	191
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	192 /* Now the data. */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	193 off -= val->size;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	194 memmove(p + off, val->data, val->size);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	195 bp[++n] = off;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	196
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	197 /* Adjust page info. */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	198 bp[0] = n;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	199 bp[n + 1] = off - ((n + 3) * sizeof(uint16));
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	200 bp[n + 2] = off;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	201 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	202
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	203 /*
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	204 * Returns:
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	205 * 0 OK
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	206 * -1 error
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	207 */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	208 extern int
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	209 __delpair(HTAB hashp, BUFHEAD bufp, int ndx)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	210 {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	211 register uint16 *bp, newoff;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	212 register int n;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	213 uint16 pairlen;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	214
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	215 bp = (uint16 *)bufp->page;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	216 n = bp[0];
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	217
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	218 if (bp[ndx + 1] < REAL_KEY)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	219 return (__big_delete(hashp, bufp));
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	220 if (ndx != 1)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	221 newoff = bp[ndx - 1];
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	222 else
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	223 newoff = hashp->BSIZE;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	224 pairlen = newoff - bp[ndx + 1];
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	225
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	226 if (ndx != (n - 1)) {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	227 /* Hard Case -- need to shuffle keys */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	228 register int i;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	229 register char *src = bufp->page + (int)OFFSET(bp);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	230 uint32 dst_offset = (uint32)OFFSET(bp) + (uint32)pairlen;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	231 register char *dst = bufp->page + dst_offset;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	232 uint32 length = bp[ndx + 1] - OFFSET(bp);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	233
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	234 /*
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	235 * +-----------+XXX+---------+XXX+---------+---------> +infinity
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	236 * \| \| \| \|
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	237 * 0 src_offset dst_offset BSIZE
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	238 *
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	239 * Dst_offset is > src_offset, so if src_offset were bad, dst_offset
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	240 * would be too, therefore we check only dst_offset.
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	241 *
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	242 * If dst_offset is >= BSIZE, either OFFSET(bp), or pairlen, or both
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	243 * is corrupted.
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	244 *
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	245 * Once we know dst_offset is < BSIZE, we can subtract it from BSIZE
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	246 * to get an upper bound on length.
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	247 */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	248 if(dst_offset > (uint32)hashp->BSIZE)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	249 return(DATABASE_CORRUPTED_ERROR);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	250
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	251 if(length > (uint32)(hashp->BSIZE - dst_offset))
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	252 return(DATABASE_CORRUPTED_ERROR);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	253
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	254 memmove(dst, src, length);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	255
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	256 /* Now adjust the pointers */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	257 for (i = ndx + 2; i <= n; i += 2) {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	258 if (bp[i + 1] == OVFLPAGE) {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	259 bp[i - 2] = bp[i];
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	260 bp[i - 1] = bp[i + 1];
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	261 } else {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	262 bp[i - 2] = bp[i] + pairlen;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	263 bp[i - 1] = bp[i + 1] + pairlen;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	264 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	265 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	266 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	267 /* Finally adjust the page data */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	268 bp[n] = OFFSET(bp) + pairlen;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	269 bp[n - 1] = bp[n + 1] + pairlen + 2 * sizeof(uint16);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	270 bp[0] = n - 2;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	271 hashp->NKEYS--;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	272
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	273 bufp->flags \|= BUF_MOD;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	274 return (0);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	275 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	276 /*
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	277 * Returns:
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	278 * 0 ==> OK
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	279 * -1 ==> Error
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	280 */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	281 extern int
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	282 __split_page(HTAB *hashp, uint32 obucket, uint32 nbucket)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	283 {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	284 register BUFHEAD new_bufp, old_bufp;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	285 register uint16 *ino;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	286 register uint16 *tmp_uint16_array;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	287 register char *np;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	288 DBT key, val;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	289 uint16 n, ndx;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	290 int retval;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	291 uint16 copyto, diff, moved;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	292 size_t off;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	293 char *op;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	294
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	295 copyto = (uint16)hashp->BSIZE;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	296 off = (uint16)hashp->BSIZE;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	297 old_bufp = __get_buf(hashp, obucket, NULL, 0);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	298 if (old_bufp == NULL)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	299 return (-1);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	300 new_bufp = __get_buf(hashp, nbucket, NULL, 0);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	301 if (new_bufp == NULL)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	302 return (-1);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	303
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	304 old_bufp->flags \|= (BUF_MOD \| BUF_PIN);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	305 new_bufp->flags \|= (BUF_MOD \| BUF_PIN);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	306
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	307 ino = (uint16 *)(op = old_bufp->page);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	308 np = new_bufp->page;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	309
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	310 moved = 0;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	311
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	312 for (n = 1, ndx = 1; n < ino[0]; n += 2) {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	313 if (ino[n + 1] < REAL_KEY) {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	314 retval = ugly_split(hashp, obucket, old_bufp, new_bufp,
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	315 (int)copyto, (int)moved);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	316 old_bufp->flags &= ~BUF_PIN;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	317 new_bufp->flags &= ~BUF_PIN;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	318 return (retval);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	319
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	320 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	321 key.data = (uint8 *)op + ino[n];
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	322
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	323 /* check here for ino[n] being greater than
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	324 * off. If it is then the database has
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	325 * been corrupted.
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	326 */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	327 if(ino[n] > off)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	328 return(DATABASE_CORRUPTED_ERROR);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	329
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	330 key.size = off - ino[n];
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	331
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	332 #ifdef DEBUG
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	333 /* make sure the size is positive */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	334 assert(((int)key.size) > -1);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	335 #endif
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	336
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	337 if (__call_hash(hashp, (char *)key.data, key.size) == obucket) {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	338 /* Don't switch page */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	339 diff = copyto - off;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	340 if (diff) {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	341 copyto = ino[n + 1] + diff;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	342 memmove(op + copyto, op + ino[n + 1],
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	343 off - ino[n + 1]);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	344 ino[ndx] = copyto + ino[n] - ino[n + 1];
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	345 ino[ndx + 1] = copyto;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	346 } else
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	347 copyto = ino[n + 1];
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	348 ndx += 2;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	349 } else {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	350 /* Switch page */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	351 val.data = (uint8 *)op + ino[n + 1];
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	352 val.size = ino[n] - ino[n + 1];
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	353
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	354 /* if the pair doesn't fit something is horribly
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	355 * wrong. LJM
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	356 */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	357 tmp_uint16_array = (uint16*)np;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	358 if(!PAIRFITS(tmp_uint16_array, &key, &val))
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	359 return(DATABASE_CORRUPTED_ERROR);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	360
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	361 putpair(np, &key, &val);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	362 moved += 2;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	363 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	364
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	365 off = ino[n + 1];
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	366 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	367
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	368 /* Now clean up the page */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	369 ino[0] -= moved;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	370 FREESPACE(ino) = copyto - sizeof(uint16) * (ino[0] + 3);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	371 OFFSET(ino) = copyto;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	372
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	373 #ifdef DEBUG3
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	374 (void)fprintf(stderr, "split %d/%d\n",
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	375 ((uint16 *)np)[0] / 2,
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	376 ((uint16 *)op)[0] / 2);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	377 #endif
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	378 /* unpin both pages */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	379 old_bufp->flags &= ~BUF_PIN;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	380 new_bufp->flags &= ~BUF_PIN;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	381 return (0);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	382 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	383
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	384 /*
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	385 * Called when we encounter an overflow or big key/data page during split
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	386 * handling. This is special cased since we have to begin checking whether
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	387 * the key/data pairs fit on their respective pages and because we may need
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	388 * overflow pages for both the old and new pages.
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	389 *
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	390 * The first page might be a page with regular key/data pairs in which case
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	391 * we have a regular overflow condition and just need to go on to the next
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	392 * page or it might be a big key/data pair in which case we need to fix the
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	393 * big key/data pair.
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	394 *
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	395 * Returns:
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	396 * 0 ==> success
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	397 * -1 ==> failure
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	398 */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	399
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	400 /* the maximum number of loops we will allow UGLY split to chew
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	401 * on before we assume the database is corrupted and throw it
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	402 * away.
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	403 */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	404 #define MAX_UGLY_SPLIT_LOOPS 10000
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	405
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	406 static int
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	407 ugly_split(HTAB hashp, uint32 obucket, BUFHEAD old_bufp,
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	408 BUFHEAD new_bufp,/ Same as __split_page. */ int copyto, int moved)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	409 /* int copyto; First byte on page which contains key/data values. */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	410 /* int moved; Number of pairs moved to new page. */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	411 {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	412 register BUFHEAD bufp; / Buffer header for ino */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	413 register uint16 ino; / Page keys come off of */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	414 register uint16 np; / New page */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	415 register uint16 op; / Page keys go on to if they aren't moving */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	416 uint32 loop_detection=0;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	417
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	418 BUFHEAD last_bfp; / Last buf header OVFL needing to be freed */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	419 DBT key, val;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	420 SPLIT_RETURN ret;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	421 uint16 n, off, ov_addr, scopyto;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	422 char cino; / Character value of ino */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	423 int status;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	424
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	425 bufp = old_bufp;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	426 ino = (uint16 *)old_bufp->page;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	427 np = (uint16 *)new_bufp->page;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	428 op = (uint16 *)old_bufp->page;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	429 last_bfp = NULL;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	430 scopyto = (uint16)copyto; /* ANSI */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	431
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	432 n = ino[0] - 1;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	433 while (n < ino[0]) {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	434
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	435
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	436 /* this function goes nuts sometimes and never returns.
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	437 * I havent found the problem yet but I need a solution
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	438 * so if we loop too often we assume a database curruption error
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	439 * :LJM
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	440 */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	441 loop_detection++;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	442
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	443 if(loop_detection > MAX_UGLY_SPLIT_LOOPS)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	444 return DATABASE_CORRUPTED_ERROR;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	445
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	446 if (ino[2] < REAL_KEY && ino[2] != OVFLPAGE) {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	447 if ((status = __big_split(hashp, old_bufp,
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	448 new_bufp, bufp, bufp->addr, obucket, &ret)))
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	449 return (status);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	450 old_bufp = ret.oldp;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	451 if (!old_bufp)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	452 return (-1);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	453 op = (uint16 *)old_bufp->page;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	454 new_bufp = ret.newp;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	455 if (!new_bufp)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	456 return (-1);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	457 np = (uint16 *)new_bufp->page;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	458 bufp = ret.nextp;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	459 if (!bufp)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	460 return (0);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	461 cino = (char *)bufp->page;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	462 ino = (uint16 *)cino;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	463 last_bfp = ret.nextp;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	464 } else if (ino[n + 1] == OVFLPAGE) {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	465 ov_addr = ino[n];
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	466 /*
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	467 * Fix up the old page -- the extra 2 are the fields
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	468 * which contained the overflow information.
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	469 */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	470 ino[0] -= (moved + 2);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	471 FREESPACE(ino) =
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	472 scopyto - sizeof(uint16) * (ino[0] + 3);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	473 OFFSET(ino) = scopyto;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	474
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	475 bufp = __get_buf(hashp, ov_addr, bufp, 0);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	476 if (!bufp)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	477 return (-1);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	478
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	479 ino = (uint16 *)bufp->page;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	480 n = 1;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	481 scopyto = hashp->BSIZE;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	482 moved = 0;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	483
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	484 if (last_bfp)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	485 __free_ovflpage(hashp, last_bfp);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	486 last_bfp = bufp;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	487 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	488 /* Move regular sized pairs of there are any */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	489 off = hashp->BSIZE;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	490 for (n = 1; (n < ino[0]) && (ino[n + 1] >= REAL_KEY); n += 2) {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	491 cino = (char *)ino;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	492 key.data = (uint8 *)cino + ino[n];
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	493 key.size = off - ino[n];
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	494 val.data = (uint8 *)cino + ino[n + 1];
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	495 val.size = ino[n] - ino[n + 1];
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	496 off = ino[n + 1];
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	497
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	498 if (__call_hash(hashp, (char*)key.data, key.size) == obucket) {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	499 /* Keep on old page */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	500 if (PAIRFITS(op, (&key), (&val)))
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	501 putpair((char *)op, &key, &val);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	502 else {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	503 old_bufp =
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	504 __add_ovflpage(hashp, old_bufp);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	505 if (!old_bufp)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	506 return (-1);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	507 op = (uint16 *)old_bufp->page;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	508 putpair((char *)op, &key, &val);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	509 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	510 old_bufp->flags \|= BUF_MOD;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	511 } else {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	512 /* Move to new page */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	513 if (PAIRFITS(np, (&key), (&val)))
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	514 putpair((char *)np, &key, &val);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	515 else {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	516 new_bufp =
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	517 __add_ovflpage(hashp, new_bufp);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	518 if (!new_bufp)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	519 return (-1);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	520 np = (uint16 *)new_bufp->page;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	521 putpair((char *)np, &key, &val);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	522 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	523 new_bufp->flags \|= BUF_MOD;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	524 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	525 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	526 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	527 if (last_bfp)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	528 __free_ovflpage(hashp, last_bfp);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	529 return (0);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	530 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	531
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	532 /*
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	533 * Add the given pair to the page
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	534 *
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	535 * Returns:
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	536 * 0 ==> OK
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	537 * 1 ==> failure
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	538 */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	539 extern int
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	540 __addel(HTAB hashp, BUFHEAD bufp, const DBT key, const DBT val)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	541 {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	542 register uint16 bp, sop;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	543 int do_expand;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	544
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	545 bp = (uint16 *)bufp->page;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	546 do_expand = 0;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	547 while (bp[0] && (bp[2] < REAL_KEY \|\| bp[bp[0]] < REAL_KEY))
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	548 /* Exception case */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	549 if (bp[2] == FULL_KEY_DATA && bp[0] == 2)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	550 /* This is the last page of a big key/data pair
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	551 and we need to add another page */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	552 break;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	553 else if (bp[2] < REAL_KEY && bp[bp[0]] != OVFLPAGE) {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	554 bufp = __get_buf(hashp, bp[bp[0] - 1], bufp, 0);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	555 if (!bufp)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	556 {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	557 #ifdef DEBUG
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	558 assert(0);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	559 #endif
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	560 return (-1);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	561 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	562 bp = (uint16 *)bufp->page;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	563 } else
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	564 /* Try to squeeze key on this page */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	565 if (FREESPACE(bp) > PAIRSIZE(key, val)) {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	566 {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	567 squeeze_key(bp, key, val);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	568
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	569 /* LJM: I added this because I think it was
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	570 * left out on accident.
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	571 * if this isn't incremented nkeys will not
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	572 * be the actual number of keys in the db.
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	573 */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	574 hashp->NKEYS++;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	575 return (0);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	576 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	577 } else {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	578 bufp = __get_buf(hashp, bp[bp[0] - 1], bufp, 0);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	579 if (!bufp)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	580 {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	581 #ifdef DEBUG
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	582 assert(0);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	583 #endif
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	584 return (-1);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	585 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	586 bp = (uint16 *)bufp->page;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	587 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	588
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	589 if (PAIRFITS(bp, key, val))
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	590 putpair(bufp->page, key, (DBT *)val);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	591 else {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	592 do_expand = 1;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	593 bufp = __add_ovflpage(hashp, bufp);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	594 if (!bufp)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	595 {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	596 #ifdef DEBUG
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	597 assert(0);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	598 #endif
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	599 return (-1);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	600 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	601 sop = (uint16 *)bufp->page;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	602
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	603 if (PAIRFITS(sop, key, val))
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	604 putpair((char )sop, key, (DBT )val);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	605 else
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	606 if (__big_insert(hashp, bufp, key, val))
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	607 {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	608 #ifdef DEBUG
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	609 assert(0);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	610 #endif
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	611 return (-1);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	612 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	613 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	614 bufp->flags \|= BUF_MOD;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	615 /*
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	616 * If the average number of keys per bucket exceeds the fill factor,
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	617 * expand the table.
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	618 */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	619 hashp->NKEYS++;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	620 if (do_expand \|\|
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	621 (hashp->NKEYS / (hashp->MAX_BUCKET + 1) > hashp->FFACTOR))
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	622 return (__expand_table(hashp));
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	623 return (0);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	624 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	625
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	626 /*
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	627 *
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	628 * Returns:
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	629 * pointer on success
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	630 * NULL on error
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	631 */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	632 extern BUFHEAD *
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	633 __add_ovflpage(HTAB hashp, BUFHEAD bufp)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	634 {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	635 register uint16 *sp;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	636 uint16 ndx, ovfl_num;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	637 #ifdef DEBUG1
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	638 int tmp1, tmp2;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	639 #endif
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	640 sp = (uint16 *)bufp->page;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	641
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	642 /* Check if we are dynamically determining the fill factor */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	643 if (hashp->FFACTOR == DEF_FFACTOR) {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	644 hashp->FFACTOR = sp[0] >> 1;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	645 if (hashp->FFACTOR < MIN_FFACTOR)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	646 hashp->FFACTOR = MIN_FFACTOR;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	647 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	648 bufp->flags \|= BUF_MOD;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	649 ovfl_num = overflow_page(hashp);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	650 #ifdef DEBUG1
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	651 tmp1 = bufp->addr;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	652 tmp2 = bufp->ovfl ? bufp->ovfl->addr : 0;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	653 #endif
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	654 if (!ovfl_num \|\| !(bufp->ovfl = __get_buf(hashp, ovfl_num, bufp, 1)))
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	655 return (NULL);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	656 bufp->ovfl->flags \|= BUF_MOD;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	657 #ifdef DEBUG1
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	658 (void)fprintf(stderr, "ADDOVFLPAGE: %d->ovfl was %d is now %d\n",
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	659 tmp1, tmp2, bufp->ovfl->addr);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	660 #endif
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	661 ndx = sp[0];
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	662 /*
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	663 * Since a pair is allocated on a page only if there's room to add
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	664 * an overflow page, we know that the OVFL information will fit on
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	665 * the page.
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	666 */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	667 sp[ndx + 4] = OFFSET(sp);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	668 sp[ndx + 3] = FREESPACE(sp) - OVFLSIZE;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	669 sp[ndx + 1] = ovfl_num;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	670 sp[ndx + 2] = OVFLPAGE;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	671 sp[0] = ndx + 2;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	672 #ifdef HASH_STATISTICS
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	673 hash_overflows++;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	674 #endif
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	675 return (bufp->ovfl);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	676 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	677
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	678 /*
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	679 * Returns:
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	680 * 0 indicates SUCCESS
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	681 * -1 indicates FAILURE
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	682 */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	683 extern int
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	684 __get_page(HTAB *hashp,
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	685 char * p,
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	686 uint32 bucket,
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	687 int is_bucket,
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	688 int is_disk,
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	689 int is_bitmap)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	690 {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	691 register int fd, page;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	692 size_t size;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	693 int rsize;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	694 uint16 *bp;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	695
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	696 fd = hashp->fp;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	697 size = hashp->BSIZE;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	698
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	699 if ((fd == -1) \|\| !is_disk) {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	700 PAGE_INIT(p);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	701 return (0);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	702 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	703 if (is_bucket)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	704 page = BUCKET_TO_PAGE(bucket);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	705 else
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	706 page = OADDR_TO_PAGE(bucket);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	707 if ((MY_LSEEK(fd, (off_t)page << hashp->BSHIFT, SEEK_SET) == -1) \|\|
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	708 ((rsize = read(fd, p, size)) == -1))
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	709 return (-1);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	710
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	711 bp = (uint16 *)p;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	712 if (!rsize)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	713 bp[0] = 0; /* We hit the EOF, so initialize a new page */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	714 else
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	715 if ((unsigned)rsize != size) {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	716 errno = EFTYPE;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	717 return (-1);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	718 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	719
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	720 if (!is_bitmap && !bp[0]) {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	721 PAGE_INIT(p);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	722 } else {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	723
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	724 #ifdef DEBUG
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	725 if(BYTE_ORDER == LITTLE_ENDIAN)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	726 {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	727 int is_little_endian;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	728 is_little_endian = BYTE_ORDER;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	729 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	730 else if(BYTE_ORDER == BIG_ENDIAN)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	731 {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	732 int is_big_endian;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	733 is_big_endian = BYTE_ORDER;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	734 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	735 else
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	736 {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	737 assert(0);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	738 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	739 #endif
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	740
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	741 if (hashp->LORDER != BYTE_ORDER) {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	742 register int i, max;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	743
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	744 if (is_bitmap) {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	745 max = hashp->BSIZE >> 2; /* divide by 4 */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	746 for (i = 0; i < max; i++)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	747 M_32_SWAP(((int *)p)[i]);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	748 } else {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	749 M_16_SWAP(bp[0]);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	750 max = bp[0] + 2;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	751
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	752 /* bound the size of max by
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	753 * the maximum number of entries
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	754 * in the array
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	755 */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	756 if((unsigned)max > (size / sizeof(uint16)))
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	757 return(DATABASE_CORRUPTED_ERROR);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	758
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	759 /* do the byte order swap
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	760 */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	761 for (i = 1; i <= max; i++)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	762 M_16_SWAP(bp[i]);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	763 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	764 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	765
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	766 /* check the validity of the page here
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	767 * (after doing byte order swaping if necessary)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	768 */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	769 if(!is_bitmap && bp[0] != 0)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	770 {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	771 uint16 num_keys = bp[0];
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	772 uint16 offset;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	773 uint16 i;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	774
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	775 /* bp[0] is supposed to be the number of
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	776 * entries currently in the page. If
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	777 * bp[0] is too large (larger than the whole
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	778 * page) then the page is corrupted
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	779 */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	780 if(bp[0] > (size / sizeof(uint16)))
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	781 return(DATABASE_CORRUPTED_ERROR);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	782
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	783 /* bound free space */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	784 if(FREESPACE(bp) > size)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	785 return(DATABASE_CORRUPTED_ERROR);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	786
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	787 /* check each key and data offset to make
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	788 * sure they are all within bounds they
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	789 * should all be less than the previous
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	790 * offset as well.
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	791 */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	792 offset = size;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	793 for(i=1 ; i <= num_keys; i+=2)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	794 {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	795 /* ignore overflow pages etc. */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	796 if(bp[i+1] >= REAL_KEY)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	797 {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	798
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	799 if(bp[i] > offset \|\| bp[i+1] > bp[i])
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	800 return(DATABASE_CORRUPTED_ERROR);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	801
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	802 offset = bp[i+1];
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	803 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	804 else
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	805 {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	806 /* there are no other valid keys after
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	807 * seeing a non REAL_KEY
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	808 */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	809 break;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	810 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	811 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	812 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	813 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	814 return (0);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	815 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	816
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	817 /*
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	818 * Write page p to disk
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	819 *
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	820 * Returns:
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	821 * 0 ==> OK
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	822 * -1 ==>failure
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	823 */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	824 extern int
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	825 __put_page(HTAB hashp, char p, uint32 bucket, int is_bucket, int is_bitmap)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	826 {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	827 register int fd, page;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	828 size_t size;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	829 int wsize;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	830 off_t offset;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	831
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	832 size = hashp->BSIZE;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	833 if ((hashp->fp == -1) && open_temp(hashp))
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	834 return (-1);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	835 fd = hashp->fp;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	836
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	837 if (hashp->LORDER != BYTE_ORDER) {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	838 register int i;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	839 register int max;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	840
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	841 if (is_bitmap) {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	842 max = hashp->BSIZE >> 2; /* divide by 4 */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	843 for (i = 0; i < max; i++)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	844 M_32_SWAP(((int *)p)[i]);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	845 } else {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	846 max = ((uint16 *)p)[0] + 2;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	847
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	848 /* bound the size of max by
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	849 * the maximum number of entries
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	850 * in the array
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	851 */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	852 if((unsigned)max > (size / sizeof(uint16)))
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	853 return(DATABASE_CORRUPTED_ERROR);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	854
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	855 for (i = 0; i <= max; i++)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	856 M_16_SWAP(((uint16 *)p)[i]);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	857
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	858 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	859 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	860
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	861 if (is_bucket)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	862 page = BUCKET_TO_PAGE(bucket);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	863 else
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	864 page = OADDR_TO_PAGE(bucket);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	865 offset = (off_t)page << hashp->BSHIFT;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	866 if ((MY_LSEEK(fd, offset, SEEK_SET) == -1) \|\|
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	867 ((wsize = write(fd, p, size)) == -1))
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	868 /* Errno is set */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	869 return (-1);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	870 if ((unsigned)wsize != size) {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	871 errno = EFTYPE;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	872 return (-1);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	873 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	874 #if defined(_WIN32) \|\| defined(_WINDOWS)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	875 if (offset + size > hashp->file_size) {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	876 hashp->updateEOF = 1;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	877 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	878 #endif
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	879 /* put the page back the way it was so that it isn't byteswapped
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	880 * if it remains in memory - LJM
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	881 */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	882 if (hashp->LORDER != BYTE_ORDER) {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	883 register int i;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	884 register int max;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	885
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	886 if (is_bitmap) {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	887 max = hashp->BSIZE >> 2; /* divide by 4 */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	888 for (i = 0; i < max; i++)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	889 M_32_SWAP(((int *)p)[i]);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	890 } else {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	891 uint16 bp = (uint16 )p;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	892
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	893 M_16_SWAP(bp[0]);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	894 max = bp[0] + 2;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	895
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	896 /* no need to bound the size if max again
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	897 * since it was done already above
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	898 */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	899
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	900 /* do the byte order re-swap
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	901 */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	902 for (i = 1; i <= max; i++)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	903 M_16_SWAP(bp[i]);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	904 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	905 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	906
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	907 return (0);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	908 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	909
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	910 #define BYTE_MASK ((1 << INT_BYTE_SHIFT) -1)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	911 /*
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	912 * Initialize a new bitmap page. Bitmap pages are left in memory
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	913 * once they are read in.
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	914 */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	915 extern int
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	916 __ibitmap(HTAB *hashp, int pnum, int nbits, int ndx)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	917 {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	918 uint32 *ip;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	919 size_t clearbytes, clearints;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	920
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	921 if ((ip = (uint32 *)malloc((size_t)hashp->BSIZE)) == NULL)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	922 return (1);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	923 hashp->nmaps++;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	924 clearints = ((nbits - 1) >> INT_BYTE_SHIFT) + 1;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	925 clearbytes = clearints << INT_TO_BYTE;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	926 (void)memset((char *)ip, 0, clearbytes);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	927 (void)memset(((char *)ip) + clearbytes, 0xFF,
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	928 hashp->BSIZE - clearbytes);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	929 ip[clearints - 1] = ALL_SET << (nbits & BYTE_MASK);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	930 SETBIT(ip, 0);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	931 hashp->BITMAPS[ndx] = (uint16)pnum;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	932 hashp->mapp[ndx] = ip;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	933 return (0);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	934 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	935
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	936 static uint32
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	937 first_free(uint32 map)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	938 {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	939 register uint32 i, mask;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	940
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	941 mask = 0x1;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	942 for (i = 0; i < BITS_PER_MAP; i++) {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	943 if (!(mask & map))
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	944 return (i);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	945 mask = mask << 1;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	946 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	947 return (i);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	948 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	949
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	950 static uint16
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	951 overflow_page(HTAB *hashp)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	952 {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	953 register uint32 *freep=NULL;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	954 register int max_free, offset, splitnum;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	955 uint16 addr;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	956 uint32 i;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	957 int bit, first_page, free_bit, free_page, in_use_bits, j;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	958 #ifdef DEBUG2
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	959 int tmp1, tmp2;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	960 #endif
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	961 splitnum = hashp->OVFL_POINT;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	962 max_free = hashp->SPARES[splitnum];
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	963
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	964 free_page = (max_free - 1) >> (hashp->BSHIFT + BYTE_SHIFT);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	965 free_bit = (max_free - 1) & ((hashp->BSIZE << BYTE_SHIFT) - 1);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	966
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	967 /* Look through all the free maps to find the first free block */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	968 first_page = hashp->LAST_FREED >>(hashp->BSHIFT + BYTE_SHIFT);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	969 for ( i = first_page; i <= (unsigned)free_page; i++ ) {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	970 if (!(freep = (uint32 *)hashp->mapp[i]) &&
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	971 !(freep = fetch_bitmap(hashp, i)))
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	972 return (0);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	973 if (i == (unsigned)free_page)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	974 in_use_bits = free_bit;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	975 else
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	976 in_use_bits = (hashp->BSIZE << BYTE_SHIFT) - 1;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	977
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	978 if (i == (unsigned)first_page) {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	979 bit = hashp->LAST_FREED &
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	980 ((hashp->BSIZE << BYTE_SHIFT) - 1);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	981 j = bit / BITS_PER_MAP;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	982 bit = bit & ~(BITS_PER_MAP - 1);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	983 } else {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	984 bit = 0;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	985 j = 0;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	986 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	987 for (; bit <= in_use_bits; j++, bit += BITS_PER_MAP)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	988 if (freep[j] != ALL_SET)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	989 goto found;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	990 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	991
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	992 /* No Free Page Found */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	993 hashp->LAST_FREED = hashp->SPARES[splitnum];
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	994 hashp->SPARES[splitnum]++;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	995 offset = hashp->SPARES[splitnum] -
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	996 (splitnum ? hashp->SPARES[splitnum - 1] : 0);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	997
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	998 #define OVMSG "HASH: Out of overflow pages. Increase page size\n"
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	999 if (offset > SPLITMASK) {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1000 if (++splitnum >= NCACHED) {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1001 #ifndef macintosh
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1002 (void)write(STDERR_FILENO, OVMSG, sizeof(OVMSG) - 1);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1003 #endif
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1004 return (0);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1005 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1006 hashp->OVFL_POINT = splitnum;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1007 hashp->SPARES[splitnum] = hashp->SPARES[splitnum-1];
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1008 hashp->SPARES[splitnum-1]--;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1009 offset = 1;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1010 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1011
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1012 /* Check if we need to allocate a new bitmap page */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1013 if (free_bit == (hashp->BSIZE << BYTE_SHIFT) - 1) {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1014 free_page++;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1015 if (free_page >= NCACHED) {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1016 #ifndef macintosh
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1017 (void)write(STDERR_FILENO, OVMSG, sizeof(OVMSG) - 1);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1018 #endif
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1019 return (0);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1020 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1021 /*
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1022 * This is tricky. The 1 indicates that you want the new page
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1023 * allocated with 1 clear bit. Actually, you are going to
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1024 * allocate 2 pages from this map. The first is going to be
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1025 * the map page, the second is the overflow page we were
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1026 * looking for. The init_bitmap routine automatically, sets
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1027 * the first bit of itself to indicate that the bitmap itself
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1028 * is in use. We would explicitly set the second bit, but
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1029 * don't have to if we tell init_bitmap not to leave it clear
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1030 * in the first place.
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1031 */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1032 if (__ibitmap(hashp,
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1033 (int)OADDR_OF(splitnum, offset), 1, free_page))
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1034 return (0);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1035 hashp->SPARES[splitnum]++;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1036 #ifdef DEBUG2
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1037 free_bit = 2;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1038 #endif
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1039 offset++;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1040 if (offset > SPLITMASK) {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1041 if (++splitnum >= NCACHED) {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1042 #ifndef macintosh
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1043 (void)write(STDERR_FILENO, OVMSG,
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1044 sizeof(OVMSG) - 1);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1045 #endif
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1046 return (0);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1047 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1048 hashp->OVFL_POINT = splitnum;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1049 hashp->SPARES[splitnum] = hashp->SPARES[splitnum-1];
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1050 hashp->SPARES[splitnum-1]--;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1051 offset = 0;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1052 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1053 } else {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1054 /*
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1055 * Free_bit addresses the last used bit. Bump it to address
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1056 * the first available bit.
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1057 */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1058 free_bit++;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1059 SETBIT(freep, free_bit);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1060 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1061
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1062 /* Calculate address of the new overflow page */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1063 addr = OADDR_OF(splitnum, offset);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1064 #ifdef DEBUG2
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1065 (void)fprintf(stderr, "OVERFLOW_PAGE: ADDR: %d BIT: %d PAGE %d\n",
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1066 addr, free_bit, free_page);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1067 #endif
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1068 return (addr);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1069
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1070 found:
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1071 bit = bit + first_free(freep[j]);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1072 SETBIT(freep, bit);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1073 #ifdef DEBUG2
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1074 tmp1 = bit;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1075 tmp2 = i;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1076 #endif
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1077 /*
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1078 * Bits are addressed starting with 0, but overflow pages are addressed
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1079 * beginning at 1. Bit is a bit addressnumber, so we need to increment
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1080 * it to convert it to a page number.
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1081 */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1082 bit = 1 + bit + (i * (hashp->BSIZE << BYTE_SHIFT));
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1083 if (bit >= hashp->LAST_FREED)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1084 hashp->LAST_FREED = bit - 1;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1085
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1086 /* Calculate the split number for this page */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1087 for (i = 0; (i < (unsigned)splitnum) && (bit > hashp->SPARES[i]); i++) {}
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1088 offset = (i ? bit - hashp->SPARES[i - 1] : bit);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1089 if (offset >= SPLITMASK)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1090 return (0); /* Out of overflow pages */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1091 addr = OADDR_OF(i, offset);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1092 #ifdef DEBUG2
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1093 (void)fprintf(stderr, "OVERFLOW_PAGE: ADDR: %d BIT: %d PAGE %d\n",
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1094 addr, tmp1, tmp2);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1095 #endif
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1096
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1097 /* Allocate and return the overflow page */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1098 return (addr);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1099 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1100
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1101 /*
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1102 * Mark this overflow page as free.
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1103 */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1104 extern void
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1105 __free_ovflpage(HTAB hashp, BUFHEAD obufp)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1106 {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1107 uint16 addr;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1108 uint32 *freep;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1109 uint32 bit_address, free_page, free_bit;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1110 uint16 ndx;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1111
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1112 if(!obufp \|\| !obufp->addr)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1113 return;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1114
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1115 addr = obufp->addr;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1116 #ifdef DEBUG1
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1117 (void)fprintf(stderr, "Freeing %d\n", addr);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1118 #endif
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1119 ndx = (((uint16)addr) >> SPLITSHIFT);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1120 bit_address =
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1121 (ndx ? hashp->SPARES[ndx - 1] : 0) + (addr & SPLITMASK) - 1;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1122 if (bit_address < (uint32)hashp->LAST_FREED)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1123 hashp->LAST_FREED = bit_address;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1124 free_page = (bit_address >> (hashp->BSHIFT + BYTE_SHIFT));
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1125 free_bit = bit_address & ((hashp->BSIZE << BYTE_SHIFT) - 1);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1126
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1127 if (!(freep = hashp->mapp[free_page]))
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1128 freep = fetch_bitmap(hashp, free_page);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1129
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1130 #ifdef DEBUG
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1131 /*
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1132 * This had better never happen. It means we tried to read a bitmap
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1133 * that has already had overflow pages allocated off it, and we
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1134 * failed to read it from the file.
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1135 */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1136 if (!freep)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1137 {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1138 assert(0);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1139 return;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1140 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1141 #endif
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1142 CLRBIT(freep, free_bit);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1143 #ifdef DEBUG2
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1144 (void)fprintf(stderr, "FREE_OVFLPAGE: ADDR: %d BIT: %d PAGE %d\n",
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1145 obufp->addr, free_bit, free_page);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1146 #endif
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1147 __reclaim_buf(hashp, obufp);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1148 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1149
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1150 /*
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1151 * Returns:
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1152 * 0 success
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1153 * -1 failure
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1154 */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1155 static int
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1156 open_temp(HTAB *hashp)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1157 {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1158 #ifdef XP_OS2
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1159 hashp->fp = mkstemp(NULL);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1160 #else
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1161 #if !defined(_WIN32) && !defined(_WINDOWS) && !defined(macintosh)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1162 sigset_t set, oset;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1163 #endif
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1164 #if !defined(macintosh)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1165 char * tmpdir;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1166 size_t len;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1167 char last;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1168 #endif
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1169 static const char namestr[] = "/_hashXXXXXX";
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1170 char filename[1024];
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1171
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1172 #if !defined(_WIN32) && !defined(_WINDOWS) && !defined(macintosh)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1173 /* Block signals; make sure file goes away at process exit. */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1174 (void)sigfillset(&set);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1175 (void)sigprocmask(SIG_BLOCK, &set, &oset);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1176 #endif
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1177
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1178 filename[0] = 0;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1179 #if defined(macintosh)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1180 strcat(filename, namestr + 1);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1181 #else
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1182 tmpdir = getenv("TMP");
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1183 if (!tmpdir)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1184 tmpdir = getenv("TMPDIR");
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1185 if (!tmpdir)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1186 tmpdir = getenv("TEMP");
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1187 if (!tmpdir)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1188 tmpdir = ".";
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1189 len = strlen(tmpdir);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1190 if (len && len < (sizeof filename - sizeof namestr)) {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1191 strcpy(filename, tmpdir);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1192 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1193 len = strlen(filename);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1194 last = tmpdir[len - 1];
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1195 strcat(filename, (last == '/' \|\| last == '\\') ? namestr + 1 : namestr);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1196 #endif
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1197
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1198 #if defined(_WIN32) \|\| defined(_WINDOWS)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1199 if ((hashp->fp = mkstempflags(filename, _O_BINARY\|_O_TEMPORARY)) != -1) {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1200 if (hashp->filename) {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1201 free(hashp->filename);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1202 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1203 hashp->filename = strdup(filename);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1204 hashp->is_temp = 1;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1205 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1206 #else
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1207 if ((hashp->fp = mkstemp(filename)) != -1) {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1208 (void)unlink(filename);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1209 #if !defined(macintosh)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1210 (void)fcntl(hashp->fp, F_SETFD, 1);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1211 #endif
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1212 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1213 #endif
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1214
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1215 #if !defined(_WIN32) && !defined(_WINDOWS) && !defined(macintosh)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1216 (void)sigprocmask(SIG_SETMASK, &oset, (sigset_t *)NULL);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1217 #endif
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1218 #endif /* !OS2 */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1219 return (hashp->fp != -1 ? 0 : -1);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1220 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1221
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1222 /*
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1223 * We have to know that the key will fit, but the last entry on the page is
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1224 * an overflow pair, so we need to shift things.
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1225 */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1226 static void
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1227 squeeze_key(uint16 sp, const DBT key, const DBT * val)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1228 {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1229 register char *p;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1230 uint16 free_space, n, off, pageno;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1231
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1232 p = (char *)sp;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1233 n = sp[0];
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1234 free_space = FREESPACE(sp);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1235 off = OFFSET(sp);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1236
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1237 pageno = sp[n - 1];
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1238 off -= key->size;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1239 sp[n - 1] = off;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1240 memmove(p + off, key->data, key->size);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1241 off -= val->size;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1242 sp[n] = off;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1243 memmove(p + off, val->data, val->size);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1244 sp[0] = n + 2;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1245 sp[n + 1] = pageno;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1246 sp[n + 2] = OVFLPAGE;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1247 FREESPACE(sp) = free_space - PAIRSIZE(key, val);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1248 OFFSET(sp) = off;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1249 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1250
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1251 static uint32 *
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1252 fetch_bitmap(HTAB *hashp, uint32 ndx)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1253 {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1254 if (ndx >= (unsigned)hashp->nmaps)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1255 return (NULL);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1256 if ((hashp->mapp[ndx] = (uint32 *)malloc((size_t)hashp->BSIZE)) == NULL)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1257 return (NULL);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1258 if (__get_page(hashp,
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1259 (char *)hashp->mapp[ndx], hashp->BITMAPS[ndx], 0, 1, 1)) {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1260 free(hashp->mapp[ndx]);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1261 hashp->mapp[ndx] = NULL; /* NEW: 9-11-95 */
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1262 return (NULL);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1263 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1264 return (hashp->mapp[ndx]);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1265 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1266
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1267 #ifdef DEBUG4
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1268 int
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1269 print_chain(int addr)
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1270 {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1271 BUFHEAD *bufp;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1272 short *bp, oaddr;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1273
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1274 (void)fprintf(stderr, "%d ", addr);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1275 bufp = __get_buf(hashp, addr, NULL, 0);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1276 bp = (short *)bufp->page;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1277 while (bp[0] && ((bp[bp[0]] == OVFLPAGE) \|\|
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1278 ((bp[0] > 2) && bp[2] < REAL_KEY))) {
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1279 oaddr = bp[bp[0] - 1];
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1280 (void)fprintf(stderr, "%d ", (int)oaddr);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1281 bufp = __get_buf(hashp, (int)oaddr, bufp, 0);
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1282 bp = (short *)bufp->page;
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1283 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1284 (void)fprintf(stderr, "\n");
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1285 }
150b72113545 Add DBM and legacydb support Andre Heinecke <andre.heinecke@intevation.de> parents: diff changeset	1286 #endif

Mercurial > trustbridge > nss-cmake-static

annotate nss/lib/dbm/src/h_page.c @ 4:b513267f632f tip