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annotate nss/lib/dbm/src/h_page.c @ 3:150b72113545

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Add DBM and legacydb support
author Andre Heinecke <andre.heinecke@intevation.de>
date Tue, 05 Aug 2014 18:32:02 +0200 (2014-08-05)
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150b72113545 Add DBM and legacydb support
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1 /*-
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2 * Copyright (c) 1990, 1993, 1994
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3 * The Regents of the University of California. All rights reserved.
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4 *
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5 * This code is derived from software contributed to Berkeley by
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6 * Margo Seltzer.
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7 *
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8 * Redistribution and use in source and binary forms, with or without
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9 * modification, are permitted provided that the following conditions
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10 * are met:
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11 * 1. Redistributions of source code must retain the above copyright
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12 * notice, this list of conditions and the following disclaimer.
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13 * 2. Redistributions in binary form must reproduce the above copyright
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14 * notice, this list of conditions and the following disclaimer in the
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15 * documentation and/or other materials provided with the distribution.
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16 * 3. ***REMOVED*** - see
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17 * ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change
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18 * 4. Neither the name of the University nor the names of its contributors
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19 * may be used to endorse or promote products derived from this software
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20 * without specific prior written permission.
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21 *
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22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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32 * SUCH DAMAGE.
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33 */
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34
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35 #if defined(unix)
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36 #define MY_LSEEK lseek
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37 #else
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38 #define MY_LSEEK new_lseek
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39 extern long new_lseek(int fd, long pos, int start);
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40 #endif
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41
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42 #if defined(LIBC_SCCS) && !defined(lint)
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43 static char sccsid[] = "@(#)hash_page.c 8.7 (Berkeley) 8/16/94";
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44 #endif /* LIBC_SCCS and not lint */
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45
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46 /*
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47 * PACKAGE: hashing
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48 *
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49 * DESCRIPTION:
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50 * Page manipulation for hashing package.
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51 *
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52 * ROUTINES:
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53 *
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54 * External
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55 * __get_page
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56 * __add_ovflpage
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57 * Internal
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58 * overflow_page
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59 * open_temp
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60 */
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61 #ifndef macintosh
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62 #include <sys/types.h>
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63 #endif
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64
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65 #if defined(macintosh)
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66 #include <unistd.h>
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67 #endif
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68
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69 #include <errno.h>
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70 #include <fcntl.h>
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71 #if defined(_WIN32) || defined(_WINDOWS)
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72 #include <io.h>
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73 #endif
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74 #include <signal.h>
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75 #include <stdio.h>
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76 #include <stdlib.h>
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77 #include <string.h>
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78
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79 #if !defined(_WIN32) && !defined(_WINDOWS) && !defined(macintosh)
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80 #include <unistd.h>
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81 #endif
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82
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83 #include <assert.h>
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84
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85 #include "mcom_db.h"
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86 #include "hash.h"
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87 #include "page.h"
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88 /* #include "extern.h" */
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89
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90 extern int mkstempflags(char *path, int extraFlags);
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91
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92 static uint32 *fetch_bitmap __P((HTAB *, uint32));
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93 static uint32 first_free __P((uint32));
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94 static int open_temp __P((HTAB *));
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95 static uint16 overflow_page __P((HTAB *));
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96 static void squeeze_key __P((uint16 *, const DBT *, const DBT *));
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97 static int ugly_split
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98 __P((HTAB *, uint32, BUFHEAD *, BUFHEAD *, int, int));
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99
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100 #define PAGE_INIT(P) { \
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101 ((uint16 *)(P))[0] = 0; \
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102 ((uint16 *)(P))[1] = hashp->BSIZE - 3 * sizeof(uint16); \
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103 ((uint16 *)(P))[2] = hashp->BSIZE; \
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104 }
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105
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106 /* implement a new lseek using lseek that
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107 * writes zero's when extending a file
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108 * beyond the end.
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109 */
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110 long new_lseek(int fd, long offset, int origin)
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111 {
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112 long cur_pos=0;
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113 long end_pos=0;
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114 long seek_pos=0;
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115
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116 if(origin == SEEK_CUR)
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117 {
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118 if(offset < 1)
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119 return(lseek(fd, offset, SEEK_CUR));
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120
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121 cur_pos = lseek(fd, 0, SEEK_CUR);
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122
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123 if(cur_pos < 0)
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124 return(cur_pos);
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125 }
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126
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127 end_pos = lseek(fd, 0, SEEK_END);
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128 if(end_pos < 0)
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129 return(end_pos);
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130
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131 if(origin == SEEK_SET)
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132 seek_pos = offset;
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133 else if(origin == SEEK_CUR)
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134 seek_pos = cur_pos + offset;
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135 else if(origin == SEEK_END)
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136 seek_pos = end_pos + offset;
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137 else
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138 {
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139 assert(0);
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140 return(-1);
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141 }
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142
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143 /* the seek position desired is before the
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144 * end of the file. We don't need
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145 * to do anything special except the seek.
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146 */
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147 if(seek_pos <= end_pos)
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148 return(lseek(fd, seek_pos, SEEK_SET));
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149
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150 /* the seek position is beyond the end of the
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151 * file. Write zero's to the end.
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152 *
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153 * we are already at the end of the file so
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154 * we just need to "write()" zeros for the
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155 * difference between seek_pos-end_pos and
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156 * then seek to the position to finish
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157 * the call
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158 */
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159 {
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160 char buffer[1024];
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161 long len = seek_pos-end_pos;
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162 memset(&buffer, 0, 1024);
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163 while(len > 0)
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164 {
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165 write(fd, (char*)&buffer, (size_t)(1024 > len ? len : 1024));
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166 len -= 1024;
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167 }
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168 return(lseek(fd, seek_pos, SEEK_SET));
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169 }
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170
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171 }
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172
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173 /*
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174 * This is called AFTER we have verified that there is room on the page for
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175 * the pair (PAIRFITS has returned true) so we go right ahead and start moving
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176 * stuff on.
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177 */
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178 static void
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179 putpair(char *p, const DBT *key, DBT * val)
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180 {
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181 register uint16 *bp, n, off;
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182
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183 bp = (uint16 *)p;
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184
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185 /* Enter the key first. */
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186 n = bp[0];
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187
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188 off = OFFSET(bp) - key->size;
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189 memmove(p + off, key->data, key->size);
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190 bp[++n] = off;
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191
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192 /* Now the data. */
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193 off -= val->size;
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194 memmove(p + off, val->data, val->size);
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195 bp[++n] = off;
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196
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197 /* Adjust page info. */
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198 bp[0] = n;
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199 bp[n + 1] = off - ((n + 3) * sizeof(uint16));
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200 bp[n + 2] = off;
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201 }
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202
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203 /*
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204 * Returns:
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205 * 0 OK
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206 * -1 error
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207 */
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208 extern int
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209 __delpair(HTAB *hashp, BUFHEAD *bufp, int ndx)
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210 {
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211 register uint16 *bp, newoff;
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212 register int n;
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213 uint16 pairlen;
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214
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215 bp = (uint16 *)bufp->page;
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216 n = bp[0];
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217
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218 if (bp[ndx + 1] < REAL_KEY)
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219 return (__big_delete(hashp, bufp));
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220 if (ndx != 1)
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221 newoff = bp[ndx - 1];
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222 else
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223 newoff = hashp->BSIZE;
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224 pairlen = newoff - bp[ndx + 1];
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225
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226 if (ndx != (n - 1)) {
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227 /* Hard Case -- need to shuffle keys */
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228 register int i;
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229 register char *src = bufp->page + (int)OFFSET(bp);
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230 uint32 dst_offset = (uint32)OFFSET(bp) + (uint32)pairlen;
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231 register char *dst = bufp->page + dst_offset;
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232 uint32 length = bp[ndx + 1] - OFFSET(bp);
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233
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234 /*
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235 * +-----------+XXX+---------+XXX+---------+---------> +infinity
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236 * | | | |
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237 * 0 src_offset dst_offset BSIZE
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238 *
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239 * Dst_offset is > src_offset, so if src_offset were bad, dst_offset
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240 * would be too, therefore we check only dst_offset.
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241 *
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242 * If dst_offset is >= BSIZE, either OFFSET(bp), or pairlen, or both
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243 * is corrupted.
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244 *
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245 * Once we know dst_offset is < BSIZE, we can subtract it from BSIZE
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246 * to get an upper bound on length.
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247 */
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248 if(dst_offset > (uint32)hashp->BSIZE)
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249 return(DATABASE_CORRUPTED_ERROR);
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250
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251 if(length > (uint32)(hashp->BSIZE - dst_offset))
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252 return(DATABASE_CORRUPTED_ERROR);
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253
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254 memmove(dst, src, length);
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255
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256 /* Now adjust the pointers */
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diff changeset
257 for (i = ndx + 2; i <= n; i += 2) {
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diff changeset
258 if (bp[i + 1] == OVFLPAGE) {
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diff changeset
259 bp[i - 2] = bp[i];
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260 bp[i - 1] = bp[i + 1];
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261 } else {
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262 bp[i - 2] = bp[i] + pairlen;
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263 bp[i - 1] = bp[i + 1] + pairlen;
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264 }
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265 }
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266 }
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diff changeset
267 /* Finally adjust the page data */
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268 bp[n] = OFFSET(bp) + pairlen;
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269 bp[n - 1] = bp[n + 1] + pairlen + 2 * sizeof(uint16);
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270 bp[0] = n - 2;
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271 hashp->NKEYS--;
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272
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273 bufp->flags |= BUF_MOD;
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diff changeset
274 return (0);
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275 }
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diff changeset
276 /*
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277 * Returns:
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278 * 0 ==> OK
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279 * -1 ==> Error
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280 */
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281 extern int
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282 __split_page(HTAB *hashp, uint32 obucket, uint32 nbucket)
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diff changeset
283 {
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284 register BUFHEAD *new_bufp, *old_bufp;
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285 register uint16 *ino;
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286 register uint16 *tmp_uint16_array;
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287 register char *np;
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288 DBT key, val;
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diff changeset
289 uint16 n, ndx;
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290 int retval;
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291 uint16 copyto, diff, moved;
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diff changeset
292 size_t off;
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diff changeset
293 char *op;
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diff changeset
294
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295 copyto = (uint16)hashp->BSIZE;
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296 off = (uint16)hashp->BSIZE;
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parents:
diff changeset
297 old_bufp = __get_buf(hashp, obucket, NULL, 0);
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parents:
diff changeset
298 if (old_bufp == NULL)
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parents:
diff changeset
299 return (-1);
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parents:
diff changeset
300 new_bufp = __get_buf(hashp, nbucket, NULL, 0);
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parents:
diff changeset
301 if (new_bufp == NULL)
150b72113545 Add DBM and legacydb support
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parents:
diff changeset
302 return (-1);
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parents:
diff changeset
303
150b72113545 Add DBM and legacydb support
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parents:
diff changeset
304 old_bufp->flags |= (BUF_MOD | BUF_PIN);
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parents:
diff changeset
305 new_bufp->flags |= (BUF_MOD | BUF_PIN);
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parents:
diff changeset
306
150b72113545 Add DBM and legacydb support
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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;
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parents:
diff changeset
309
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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
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parents:
diff changeset
312 for (n = 1, ndx = 1; n < ino[0]; n += 2) {
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parents:
diff changeset
313 if (ino[n + 1] < REAL_KEY) {
150b72113545 Add DBM and legacydb support
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parents:
diff changeset
314 retval = ugly_split(hashp, obucket, old_bufp, new_bufp,
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parents:
diff changeset
315 (int)copyto, (int)moved);
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parents:
diff changeset
316 old_bufp->flags &= ~BUF_PIN;
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parents:
diff changeset
317 new_bufp->flags &= ~BUF_PIN;
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parents:
diff changeset
318 return (retval);
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parents:
diff changeset
319
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parents:
diff changeset
320 }
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parents:
diff changeset
321 key.data = (uint8 *)op + ino[n];
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parents:
diff changeset
322
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parents:
diff changeset
323 /* check here for ino[n] being greater than
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Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
324 * off. If it is then the database has
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parents:
diff changeset
325 * been corrupted.
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parents:
diff changeset
326 */
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Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
327 if(ino[n] > off)
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parents:
diff changeset
328 return(DATABASE_CORRUPTED_ERROR);
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diff changeset
329
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diff changeset
330 key.size = off - ino[n];
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diff changeset
331
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parents:
diff changeset
332 #ifdef DEBUG
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333 /* make sure the size is positive */
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parents:
diff changeset
334 assert(((int)key.size) > -1);
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diff changeset
335 #endif
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diff changeset
336
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diff changeset
337 if (__call_hash(hashp, (char *)key.data, key.size) == obucket) {
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parents:
diff changeset
338 /* Don't switch page */
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parents:
diff changeset
339 diff = copyto - off;
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parents:
diff changeset
340 if (diff) {
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parents:
diff changeset
341 copyto = ino[n + 1] + diff;
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parents:
diff changeset
342 memmove(op + copyto, op + ino[n + 1],
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Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
343 off - ino[n + 1]);
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parents:
diff changeset
344 ino[ndx] = copyto + ino[n] - ino[n + 1];
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parents:
diff changeset
345 ino[ndx + 1] = copyto;
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parents:
diff changeset
346 } else
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parents:
diff changeset
347 copyto = ino[n + 1];
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parents:
diff changeset
348 ndx += 2;
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parents:
diff changeset
349 } else {
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parents:
diff changeset
350 /* Switch page */
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parents:
diff changeset
351 val.data = (uint8 *)op + ino[n + 1];
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parents:
diff changeset
352 val.size = ino[n] - ino[n + 1];
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parents:
diff changeset
353
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parents:
diff changeset
354 /* if the pair doesn't fit something is horribly
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Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
355 * wrong. LJM
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Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
356 */
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Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
357 tmp_uint16_array = (uint16*)np;
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parents:
diff changeset
358 if(!PAIRFITS(tmp_uint16_array, &key, &val))
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parents:
diff changeset
359 return(DATABASE_CORRUPTED_ERROR);
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parents:
diff changeset
360
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Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
361 putpair(np, &key, &val);
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Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
362 moved += 2;
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parents:
diff changeset
363 }
150b72113545 Add DBM and legacydb support
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parents:
diff changeset
364
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Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
365 off = ino[n + 1];
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Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
366 }
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parents:
diff changeset
367
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Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
368 /* Now clean up the page */
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Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
369 ino[0] -= moved;
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parents:
diff changeset
370 FREESPACE(ino) = copyto - sizeof(uint16) * (ino[0] + 3);
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Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
371 OFFSET(ino) = copyto;
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parents:
diff changeset
372
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parents:
diff changeset
373 #ifdef DEBUG3
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parents:
diff changeset
374 (void)fprintf(stderr, "split %d/%d\n",
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parents:
diff changeset
375 ((uint16 *)np)[0] / 2,
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parents:
diff changeset
376 ((uint16 *)op)[0] / 2);
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Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
377 #endif
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Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
378 /* unpin both pages */
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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
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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
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