158f0484fSRodney W. Grimes /*- 2f1e396bcSPaul Traina * Copyright (c) 1990, 1993, 1994 358f0484fSRodney W. Grimes * The Regents of the University of California. All rights reserved. 458f0484fSRodney W. Grimes * 558f0484fSRodney W. Grimes * This code is derived from software contributed to Berkeley by 658f0484fSRodney W. Grimes * Mike Olson. 758f0484fSRodney W. Grimes * 858f0484fSRodney W. Grimes * Redistribution and use in source and binary forms, with or without 958f0484fSRodney W. Grimes * modification, are permitted provided that the following conditions 1058f0484fSRodney W. Grimes * are met: 1158f0484fSRodney W. Grimes * 1. Redistributions of source code must retain the above copyright 1258f0484fSRodney W. Grimes * notice, this list of conditions and the following disclaimer. 1358f0484fSRodney W. Grimes * 2. Redistributions in binary form must reproduce the above copyright 1458f0484fSRodney W. Grimes * notice, this list of conditions and the following disclaimer in the 1558f0484fSRodney W. Grimes * documentation and/or other materials provided with the distribution. 1658f0484fSRodney W. Grimes * 3. All advertising materials mentioning features or use of this software 1758f0484fSRodney W. Grimes * must display the following acknowledgement: 1858f0484fSRodney W. Grimes * This product includes software developed by the University of 1958f0484fSRodney W. Grimes * California, Berkeley and its contributors. 2058f0484fSRodney W. Grimes * 4. Neither the name of the University nor the names of its contributors 2158f0484fSRodney W. Grimes * may be used to endorse or promote products derived from this software 2258f0484fSRodney W. Grimes * without specific prior written permission. 2358f0484fSRodney W. Grimes * 2458f0484fSRodney W. Grimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2558f0484fSRodney W. Grimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2658f0484fSRodney W. Grimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2758f0484fSRodney W. Grimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2858f0484fSRodney W. Grimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2958f0484fSRodney W. Grimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 3058f0484fSRodney W. Grimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 3158f0484fSRodney W. Grimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 3258f0484fSRodney W. Grimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3358f0484fSRodney W. Grimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3458f0484fSRodney W. Grimes * SUCH DAMAGE. 3592927338SJason Evans * 3692927338SJason Evans * $FreeBSD$ 3758f0484fSRodney W. Grimes */ 3858f0484fSRodney W. Grimes 3958f0484fSRodney W. Grimes #if defined(LIBC_SCCS) && !defined(lint) 40f1e396bcSPaul Traina static char sccsid[] = "@(#)bt_close.c 8.7 (Berkeley) 8/17/94"; 4158f0484fSRodney W. Grimes #endif /* LIBC_SCCS and not lint */ 4258f0484fSRodney W. Grimes 43d201fe46SDaniel Eischen #include "namespace.h" 4458f0484fSRodney W. Grimes #include <sys/param.h> 4558f0484fSRodney W. Grimes 4658f0484fSRodney W. Grimes #include <errno.h> 4758f0484fSRodney W. Grimes #include <stdio.h> 4858f0484fSRodney W. Grimes #include <stdlib.h> 4958f0484fSRodney W. Grimes #include <string.h> 5058f0484fSRodney W. Grimes #include <unistd.h> 51d201fe46SDaniel Eischen #include "un-namespace.h" 5258f0484fSRodney W. Grimes 5358f0484fSRodney W. Grimes #include <db.h> 5458f0484fSRodney W. Grimes #include "btree.h" 5558f0484fSRodney W. Grimes 56c05ac53bSDavid E. O'Brien static int bt_meta(BTREE *); 5758f0484fSRodney W. Grimes 5858f0484fSRodney W. Grimes /* 5958f0484fSRodney W. Grimes * BT_CLOSE -- Close a btree. 6058f0484fSRodney W. Grimes * 6158f0484fSRodney W. Grimes * Parameters: 6258f0484fSRodney W. Grimes * dbp: pointer to access method 6358f0484fSRodney W. Grimes * 6458f0484fSRodney W. Grimes * Returns: 6558f0484fSRodney W. Grimes * RET_ERROR, RET_SUCCESS 6658f0484fSRodney W. Grimes */ 6758f0484fSRodney W. Grimes int 6858f0484fSRodney W. Grimes __bt_close(dbp) 6958f0484fSRodney W. Grimes DB *dbp; 7058f0484fSRodney W. Grimes { 7158f0484fSRodney W. Grimes BTREE *t; 7258f0484fSRodney W. Grimes int fd; 7358f0484fSRodney W. Grimes 7458f0484fSRodney W. Grimes t = dbp->internal; 7558f0484fSRodney W. Grimes 7658f0484fSRodney W. Grimes /* Toss any page pinned across calls. */ 7758f0484fSRodney W. Grimes if (t->bt_pinned != NULL) { 7858f0484fSRodney W. Grimes mpool_put(t->bt_mp, t->bt_pinned, 0); 7958f0484fSRodney W. Grimes t->bt_pinned = NULL; 8058f0484fSRodney W. Grimes } 8158f0484fSRodney W. Grimes 82f1e396bcSPaul Traina /* Sync the tree. */ 8358f0484fSRodney W. Grimes if (__bt_sync(dbp, 0) == RET_ERROR) 8458f0484fSRodney W. Grimes return (RET_ERROR); 8558f0484fSRodney W. Grimes 86f1e396bcSPaul Traina /* Close the memory pool. */ 8758f0484fSRodney W. Grimes if (mpool_close(t->bt_mp) == RET_ERROR) 8858f0484fSRodney W. Grimes return (RET_ERROR); 8958f0484fSRodney W. Grimes 90f1e396bcSPaul Traina /* Free random memory. */ 91f1e396bcSPaul Traina if (t->bt_cursor.key.data != NULL) { 92f1e396bcSPaul Traina free(t->bt_cursor.key.data); 93f1e396bcSPaul Traina t->bt_cursor.key.size = 0; 94f1e396bcSPaul Traina t->bt_cursor.key.data = NULL; 95f1e396bcSPaul Traina } 96f1e396bcSPaul Traina if (t->bt_rkey.data) { 97f1e396bcSPaul Traina free(t->bt_rkey.data); 98f1e396bcSPaul Traina t->bt_rkey.size = 0; 99f1e396bcSPaul Traina t->bt_rkey.data = NULL; 100f1e396bcSPaul Traina } 101f1e396bcSPaul Traina if (t->bt_rdata.data) { 102f1e396bcSPaul Traina free(t->bt_rdata.data); 103f1e396bcSPaul Traina t->bt_rdata.size = 0; 104f1e396bcSPaul Traina t->bt_rdata.data = NULL; 105f1e396bcSPaul Traina } 10658f0484fSRodney W. Grimes 10758f0484fSRodney W. Grimes fd = t->bt_fd; 10858f0484fSRodney W. Grimes free(t); 10958f0484fSRodney W. Grimes free(dbp); 1109233c4d9SJason Evans return (_close(fd) ? RET_ERROR : RET_SUCCESS); 11158f0484fSRodney W. Grimes } 11258f0484fSRodney W. Grimes 11358f0484fSRodney W. Grimes /* 11458f0484fSRodney W. Grimes * BT_SYNC -- sync the btree to disk. 11558f0484fSRodney W. Grimes * 11658f0484fSRodney W. Grimes * Parameters: 11758f0484fSRodney W. Grimes * dbp: pointer to access method 11858f0484fSRodney W. Grimes * 11958f0484fSRodney W. Grimes * Returns: 12058f0484fSRodney W. Grimes * RET_SUCCESS, RET_ERROR. 12158f0484fSRodney W. Grimes */ 12258f0484fSRodney W. Grimes int 12358f0484fSRodney W. Grimes __bt_sync(dbp, flags) 12458f0484fSRodney W. Grimes const DB *dbp; 12558f0484fSRodney W. Grimes u_int flags; 12658f0484fSRodney W. Grimes { 12758f0484fSRodney W. Grimes BTREE *t; 12858f0484fSRodney W. Grimes int status; 12958f0484fSRodney W. Grimes 13058f0484fSRodney W. Grimes t = dbp->internal; 13158f0484fSRodney W. Grimes 13258f0484fSRodney W. Grimes /* Toss any page pinned across calls. */ 13358f0484fSRodney W. Grimes if (t->bt_pinned != NULL) { 13458f0484fSRodney W. Grimes mpool_put(t->bt_mp, t->bt_pinned, 0); 13558f0484fSRodney W. Grimes t->bt_pinned = NULL; 13658f0484fSRodney W. Grimes } 13758f0484fSRodney W. Grimes 13858f0484fSRodney W. Grimes /* Sync doesn't currently take any flags. */ 13958f0484fSRodney W. Grimes if (flags != 0) { 14058f0484fSRodney W. Grimes errno = EINVAL; 14158f0484fSRodney W. Grimes return (RET_ERROR); 14258f0484fSRodney W. Grimes } 14358f0484fSRodney W. Grimes 144f1e396bcSPaul Traina if (F_ISSET(t, B_INMEM | B_RDONLY) || !F_ISSET(t, B_MODIFIED)) 14558f0484fSRodney W. Grimes return (RET_SUCCESS); 14658f0484fSRodney W. Grimes 147f1e396bcSPaul Traina if (F_ISSET(t, B_METADIRTY) && bt_meta(t) == RET_ERROR) 14858f0484fSRodney W. Grimes return (RET_ERROR); 14958f0484fSRodney W. Grimes 15058f0484fSRodney W. Grimes if ((status = mpool_sync(t->bt_mp)) == RET_SUCCESS) 151f1e396bcSPaul Traina F_CLR(t, B_MODIFIED); 15258f0484fSRodney W. Grimes 15358f0484fSRodney W. Grimes return (status); 15458f0484fSRodney W. Grimes } 15558f0484fSRodney W. Grimes 15658f0484fSRodney W. Grimes /* 15758f0484fSRodney W. Grimes * BT_META -- write the tree meta data to disk. 15858f0484fSRodney W. Grimes * 15958f0484fSRodney W. Grimes * Parameters: 16058f0484fSRodney W. Grimes * t: tree 16158f0484fSRodney W. Grimes * 16258f0484fSRodney W. Grimes * Returns: 16358f0484fSRodney W. Grimes * RET_ERROR, RET_SUCCESS 16458f0484fSRodney W. Grimes */ 16558f0484fSRodney W. Grimes static int 16658f0484fSRodney W. Grimes bt_meta(t) 16758f0484fSRodney W. Grimes BTREE *t; 16858f0484fSRodney W. Grimes { 16958f0484fSRodney W. Grimes BTMETA m; 17058f0484fSRodney W. Grimes void *p; 17158f0484fSRodney W. Grimes 17258f0484fSRodney W. Grimes if ((p = mpool_get(t->bt_mp, P_META, 0)) == NULL) 17358f0484fSRodney W. Grimes return (RET_ERROR); 17458f0484fSRodney W. Grimes 17558f0484fSRodney W. Grimes /* Fill in metadata. */ 176f1e396bcSPaul Traina m.magic = BTREEMAGIC; 177f1e396bcSPaul Traina m.version = BTREEVERSION; 178f1e396bcSPaul Traina m.psize = t->bt_psize; 179f1e396bcSPaul Traina m.free = t->bt_free; 180f1e396bcSPaul Traina m.nrecs = t->bt_nrecs; 181f1e396bcSPaul Traina m.flags = F_ISSET(t, SAVEMETA); 18258f0484fSRodney W. Grimes 18358f0484fSRodney W. Grimes memmove(p, &m, sizeof(BTMETA)); 18458f0484fSRodney W. Grimes mpool_put(t->bt_mp, p, MPOOL_DIRTY); 18558f0484fSRodney W. Grimes return (RET_SUCCESS); 18658f0484fSRodney W. Grimes } 187