1 1.15 joerg /* $NetBSD: rec_close.c,v 1.15 2008/09/11 12:58:00 joerg Exp $ */ 2 1.6 cgd 3 1.1 cgd /*- 4 1.7 cgd * Copyright (c) 1990, 1993, 1994 5 1.1 cgd * The Regents of the University of California. All rights reserved. 6 1.1 cgd * 7 1.1 cgd * Redistribution and use in source and binary forms, with or without 8 1.1 cgd * modification, are permitted provided that the following conditions 9 1.1 cgd * are met: 10 1.1 cgd * 1. Redistributions of source code must retain the above copyright 11 1.1 cgd * notice, this list of conditions and the following disclaimer. 12 1.1 cgd * 2. Redistributions in binary form must reproduce the above copyright 13 1.1 cgd * notice, this list of conditions and the following disclaimer in the 14 1.1 cgd * documentation and/or other materials provided with the distribution. 15 1.12 agc * 3. Neither the name of the University nor the names of its contributors 16 1.1 cgd * may be used to endorse or promote products derived from this software 17 1.1 cgd * without specific prior written permission. 18 1.1 cgd * 19 1.1 cgd * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 1.1 cgd * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 1.1 cgd * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 1.1 cgd * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 1.1 cgd * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 1.1 cgd * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 1.1 cgd * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 1.1 cgd * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 1.1 cgd * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 1.1 cgd * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 1.1 cgd * SUCH DAMAGE. 30 1.1 cgd */ 31 1.1 cgd 32 1.15 joerg #if HAVE_NBTOOL_CONFIG_H 33 1.15 joerg #include "nbtool_config.h" 34 1.15 joerg #endif 35 1.15 joerg 36 1.8 christos #include <sys/cdefs.h> 37 1.15 joerg __RCSID("$NetBSD: rec_close.c,v 1.15 2008/09/11 12:58:00 joerg Exp $"); 38 1.1 cgd 39 1.9 jtc #include "namespace.h" 40 1.1 cgd #include <sys/types.h> 41 1.1 cgd #include <sys/uio.h> 42 1.1 cgd #include <sys/mman.h> 43 1.1 cgd 44 1.13 christos #include <assert.h> 45 1.1 cgd #include <errno.h> 46 1.1 cgd #include <limits.h> 47 1.1 cgd #include <stdio.h> 48 1.1 cgd #include <unistd.h> 49 1.1 cgd 50 1.1 cgd #include <db.h> 51 1.1 cgd #include "recno.h" 52 1.1 cgd 53 1.1 cgd /* 54 1.1 cgd * __REC_CLOSE -- Close a recno tree. 55 1.1 cgd * 56 1.1 cgd * Parameters: 57 1.1 cgd * dbp: pointer to access method 58 1.1 cgd * 59 1.1 cgd * Returns: 60 1.1 cgd * RET_ERROR, RET_SUCCESS 61 1.1 cgd */ 62 1.1 cgd int 63 1.13 christos __rec_close(DB *dbp) 64 1.1 cgd { 65 1.1 cgd BTREE *t; 66 1.5 cgd int status; 67 1.1 cgd 68 1.4 cgd t = dbp->internal; 69 1.4 cgd 70 1.4 cgd /* Toss any page pinned across calls. */ 71 1.4 cgd if (t->bt_pinned != NULL) { 72 1.4 cgd mpool_put(t->bt_mp, t->bt_pinned, 0); 73 1.4 cgd t->bt_pinned = NULL; 74 1.4 cgd } 75 1.4 cgd 76 1.1 cgd if (__rec_sync(dbp, 0) == RET_ERROR) 77 1.1 cgd return (RET_ERROR); 78 1.1 cgd 79 1.1 cgd /* Committed to closing. */ 80 1.5 cgd status = RET_SUCCESS; 81 1.7 cgd if (F_ISSET(t, R_MEMMAPPED) && munmap(t->bt_smap, t->bt_msize)) 82 1.5 cgd status = RET_ERROR; 83 1.1 cgd 84 1.10 thorpej if (!F_ISSET(t, R_INMEM)) { 85 1.7 cgd if (F_ISSET(t, R_CLOSEFP)) { 86 1.1 cgd if (fclose(t->bt_rfp)) 87 1.5 cgd status = RET_ERROR; 88 1.10 thorpej } else { 89 1.1 cgd if (close(t->bt_rfd)) 90 1.5 cgd status = RET_ERROR; 91 1.10 thorpej } 92 1.10 thorpej } 93 1.1 cgd 94 1.1 cgd if (__bt_close(dbp) == RET_ERROR) 95 1.5 cgd status = RET_ERROR; 96 1.1 cgd 97 1.5 cgd return (status); 98 1.1 cgd } 99 1.1 cgd 100 1.1 cgd /* 101 1.1 cgd * __REC_SYNC -- sync the recno tree to disk. 102 1.1 cgd * 103 1.1 cgd * Parameters: 104 1.1 cgd * dbp: pointer to access method 105 1.1 cgd * 106 1.1 cgd * Returns: 107 1.1 cgd * RET_SUCCESS, RET_ERROR. 108 1.1 cgd */ 109 1.1 cgd int 110 1.13 christos __rec_sync(const DB *dbp, u_int flags) 111 1.1 cgd { 112 1.1 cgd struct iovec iov[2]; 113 1.1 cgd BTREE *t; 114 1.1 cgd DBT data, key; 115 1.1 cgd off_t off; 116 1.1 cgd recno_t scursor, trec; 117 1.1 cgd int status; 118 1.1 cgd 119 1.1 cgd t = dbp->internal; 120 1.4 cgd 121 1.4 cgd /* Toss any page pinned across calls. */ 122 1.4 cgd if (t->bt_pinned != NULL) { 123 1.4 cgd mpool_put(t->bt_mp, t->bt_pinned, 0); 124 1.4 cgd t->bt_pinned = NULL; 125 1.4 cgd } 126 1.1 cgd 127 1.1 cgd if (flags == R_RECNOSYNC) 128 1.1 cgd return (__bt_sync(dbp, 0)); 129 1.1 cgd 130 1.7 cgd if (F_ISSET(t, R_RDONLY | R_INMEM) || !F_ISSET(t, R_MODIFIED)) 131 1.1 cgd return (RET_SUCCESS); 132 1.1 cgd 133 1.1 cgd /* Read any remaining records into the tree. */ 134 1.7 cgd if (!F_ISSET(t, R_EOF) && t->bt_irec(t, MAX_REC_NUMBER) == RET_ERROR) 135 1.1 cgd return (RET_ERROR); 136 1.1 cgd 137 1.1 cgd /* Rewind the file descriptor. */ 138 1.1 cgd if (lseek(t->bt_rfd, (off_t)0, SEEK_SET) != 0) 139 1.1 cgd return (RET_ERROR); 140 1.1 cgd 141 1.7 cgd /* Save the cursor. */ 142 1.7 cgd scursor = t->bt_cursor.rcursor; 143 1.1 cgd 144 1.1 cgd key.size = sizeof(recno_t); 145 1.1 cgd key.data = &trec; 146 1.1 cgd 147 1.7 cgd if (F_ISSET(t, R_FIXLEN)) { 148 1.7 cgd /* 149 1.7 cgd * We assume that fixed length records are all fixed length. 150 1.7 cgd * Any that aren't are either EINVAL'd or corrected by the 151 1.7 cgd * record put code. 152 1.7 cgd */ 153 1.7 cgd status = (dbp->seq)(dbp, &key, &data, R_FIRST); 154 1.7 cgd while (status == RET_SUCCESS) { 155 1.11 thorpej if (write(t->bt_rfd, data.data, data.size) != 156 1.11 thorpej (ssize_t) data.size) 157 1.7 cgd return (RET_ERROR); 158 1.7 cgd status = (dbp->seq)(dbp, &key, &data, R_NEXT); 159 1.7 cgd } 160 1.7 cgd } else { 161 1.7 cgd iov[1].iov_base = &t->bt_bval; 162 1.7 cgd iov[1].iov_len = 1; 163 1.7 cgd 164 1.7 cgd status = (dbp->seq)(dbp, &key, &data, R_FIRST); 165 1.7 cgd while (status == RET_SUCCESS) { 166 1.7 cgd iov[0].iov_base = data.data; 167 1.7 cgd iov[0].iov_len = data.size; 168 1.11 thorpej if (writev(t->bt_rfd, iov, 2) != 169 1.11 thorpej (ssize_t) (data.size + 1)) 170 1.7 cgd return (RET_ERROR); 171 1.7 cgd status = (dbp->seq)(dbp, &key, &data, R_NEXT); 172 1.7 cgd } 173 1.7 cgd } 174 1.7 cgd 175 1.7 cgd /* Restore the cursor. */ 176 1.7 cgd t->bt_cursor.rcursor = scursor; 177 1.7 cgd 178 1.1 cgd if (status == RET_ERROR) 179 1.1 cgd return (RET_ERROR); 180 1.1 cgd if ((off = lseek(t->bt_rfd, (off_t)0, SEEK_CUR)) == -1) 181 1.1 cgd return (RET_ERROR); 182 1.1 cgd if (ftruncate(t->bt_rfd, off)) 183 1.1 cgd return (RET_ERROR); 184 1.7 cgd F_CLR(t, R_MODIFIED); 185 1.1 cgd return (RET_SUCCESS); 186 1.1 cgd } 187